Patent Publication Number: US-2023160568-A1

Title: Home appliance

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     The present application claims priority under 35 U.S.C. 119 and 35 U.S.C. 365 to Korean Patent Application No. 10-2021-0162152, filed in Korea on Nov. 23, 2021, which is hereby incorporated by reference in its entirety. 
     BACKGROUND 
     1. Field 
     The present disclosure relates to a home appliance. 
     2. Background 
     In general, home appliances are disposed in an indoor space and may be disposed to be harmonized with the surrounding space. In addition, to further improve the appearance of the home appliance, a panel defining an outer appearance on a front surface of the home appliance may be provided. Typically, structures that variously modify the outer appearance of the front surface of the refrigerator so as to be harmonized with environments in which the refrigerator is placed, surrounding furniture, or other home appliances are being developed, and this trend is being made throughout the home appliances. 
     U.S. Pat. No. 8,789,900 discloses a structure in which a decoration panel defining an outer appearance is installed on a door front of a refrigerator, and here, the outer appearance of the door front is defined according to a user&#39;s preference by detachably configuring the decoration panel. However, the refrigerator having this structure has a problem in that, when a user wants to change the outer appearance, the entire decoration panel needs to be removed and replaced, and it is not possible to use the decoration panel before replacement any longer. 
     To solve this limitation, Chinese Patent Application No. 103250018 discloses a refrigerator in which a reflective layer and a transparent panel are disposed on a door front and colored light emitting members are mounted on both side ends of the reflective layer to cause the transparent panel to shine with set color. However, in such a structure, it is not easy to replace the transparent panel, and there is a limitation in that maintenance is not easy because of disassembling the entire door to repair and replace the light emitting member in case of abnormality of the light emitting member. 
     In addition, when such a structure is applied to the door, there is a limitation in that a thickness of the door becomes thick because power and control-related components for an arrangement of the light emitting member and an operation of the light emitting member are disposed in the door. Particularly, when the thickness of the door is maintained in the refrigerator, there is a limitation in that insulation performance of the door is deteriorated due to the arrangement of the light emitting member. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The embodiments will be described in detail with reference to the following drawings in which like reference numerals refer to like elements wherein: 
         FIG.  1    is a front view of a refrigerator according to an embodiment; 
         FIG.  2    is a front view illustrating a state in which a door of the refrigerator is opened; 
         FIG.  3    is a perspective view of the door; 
         FIG.  4    is an exploded perspective view illustrating a state in which a panel assembly and a door body, which are components of the door, are separated from each other; 
         FIG.  5    is a rear perspective view of the panel assembly; 
         FIG.  6    is a cross-sectional view taken along line VI-VI′ of  FIG.  4   ; 
         FIG.  7    is an exploded perspective view of the panel assembly; 
         FIG.  8    is an exploded perspective view illustrating a state in which an upper bracket, a transmission member, and a back plate, which are components of the panel assembly, are disassembled; 
         FIG.  9    is an exploded perspective view illustrating a state in which a lower bracket, the transmission member, and the back plate, which are components of the panel assembly, are disassembled; 
         FIG.  10    is a perspective view illustrating a state in which the lighting device is mounted on the lower bracket that is one component of the panel assembly; 
         FIG.  11    is an exploded perspective view illustrating the lower bracket, a lighting device, and a heat dissipation member; 
         FIG.  12    is a perspective view of the lower bracket; 
         FIG.  13    is a plan view of the lighting device; 
         FIG.  14    is an enlarged view illustrating a portion A of  FIG.  13   ; 
         FIG.  15    is an enlarged view illustrating an opposite surface of the portion A; 
         FIG.  16    is a partial enlarged view illustrating another example of the lighting device; 
         FIG.  17    is a partial enlarged view illustrating further another example of the lighting device; 
         FIG.  18    is a partial enlarged view illustrating further another example of the lighting device; 
         FIG.  19    is a plan view illustrating a state in which the lighting device is mounted on the door bracket; 
         FIG.  20    is a partial enlarged view illustrating a mounting state of the lighting device; 
         FIG.  21    is a cutaway perspective view taken along line XXI-XXI′ of  FIG.  4   ; 
         FIG.  22    is a cutaway perspective view taken along line XXII-XXII′ of  FIG.  5   ; 
         FIG.  23    is a block diagram illustrating a flow of a control signal of the refrigerator; 
         FIG.  24    is a cross-sectional view illustrating an emission state of the panel assembly; 
         FIG.  25    is a view illustrating an example of adjusting colors of home appliances to which the panel assembly using a remote device is applied; 
         FIG.  26    is a front view illustrating an outer appearance of a front surface of the refrigerator that is in a state in which the lighting device is turned off; 
         FIG.  27    is a front view illustrating the outer appearance of the front surface of the refrigerator in a state in which the lighting device of the refrigerator is turned on; 
         FIG.  28    is a front view illustrating an outer appearance of the front surface of the refrigerator in which the lighting device is changed in color; 
         FIG.  29    is a front view illustrating an outer appearance of the front surface of the refrigerator in a state in which a portion of a plurality of doors emits light; 
         FIG.  30    is a front view illustrating the outer appearance of the front surface of the refrigerator in a state in which each of a refrigerating compartment door and a freezing compartment door of the doors emits light; 
         FIG.  31    is a perspective view of a refrigerator according to another embodiment; and 
         FIG.  32    is a front view of a front appearance of a refrigerator in the state in which a lighting device of the refrigerator is turned on. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, detailed embodiments will be described in detail with reference to the accompanying drawings. However, the present disclosure is limited to the embodiments in which the spirit of the present invention is proposed, and other degenerate idea or other embodiments included in the scope of the present invention may be easily proposed by addition, changes, deletions, etc. of other elements. 
     Prior to a description, directions are defined. In an embodiment of the present disclosure, a direction toward a door is defined as a front direction with respect to a cabinet shown in  FIGS.  1  and  2   , a direction toward the cabinet with respect to the door is defined as a rear direction, a direction toward a bottom on which a refrigerator is installed is defined as a downward direction, and a direction away from the bottom is defined as an upward direction. 
       FIG.  1    is a front view of a refrigerator according to an embodiment. Also,  FIG.  2    is a front view illustrating a state in which a door of the refrigerator is opened. As illustrated in the drawings, an outer appearance of a refrigerator  1  according to an embodiment may be defined by a cabinet  10  in which a storage space is defined, and a door  20  for opening and closing the storage space of the cabinet  10 . 
     For example, the cabinet  10  may define the storage space partitioned in a vertical direction. Here, a refrigerating compartment  11  may be defined at an upper portion of the cabinet  10 , and a freezing compartment  12  may be defined at a lower portion of the cabinet  10 . The refrigerating compartment  11  may be referred to as an upper storage space, and the freezing compartment  12  may be referred to as a lower storage space. In addition, the freezing compartment  12  may be divided into left and right sides to define a left freezing chamber  12   a  and a right freezing chamber  12   b . The left freezing compartment  12   a  may be referred to as a left lower storage space, and the right freezing compartment  12   b  may be referred to as a right lower storage space. 
     The door  20  may be configured to open and close each of the refrigerating compartment  11  and the freezing compartment  12 . For example, the door  20  may be rotatably mounted to the cabinet  10 , and each of the refrigerating compartment  11  and the freezing compartment  12  may be opened and closed by the rotation. Of course, the door  20  may also be withdrawn to open and close each of the refrigerating compartment and the freezing compartment. 
     The door  20  may include a refrigerating compartment door  201  that opens and closes the refrigerating compartment  11  and a freezing compartment door  202  that opens and closes the freezing compartment  12 . The refrigerating compartment door  201  may be referred to as an upper door, and the freezing compartment door  202  may be referred to as a lower door. 
     The refrigerating compartment door  201  may include a pair of a left refrigerating compartment door and a right refrigerating compartment door, which are arranged side by side. The left refrigerating compartment door  201   a  and the right refrigerating compartment door  201   b  may be disposed adjacent to each other and may have the same size. In addition, the left refrigerating compartment door  201   a  and the right refrigerating compartment door  201   b  may independently rotate to open and close the refrigerating compartment  11 . 
     Upper and lower ends of the refrigerating compartment door  201   a  and the freezing compartment door  201   b  may be coupled to the cabinet  10  by hinge devices  204  and  205 , respectively. The hinge device  204  may include an upper hinge  204  and a lower hinge  205 , and the refrigerator compartment door  201   a  and the freezing compartment door  201   b  may be rotatably mounted thereon. 
     In addition, the freezing compartment door  202  may include a pair of a left freezing compartment door  202   a  and a right freezing compartment door  202   b , which are arranged side by side. In addition, the left freezing compartment door  202   a  and the right freezing compartment door  202   b  may independently rotate to open and close the freezing compartment. The left freezing compartment door  202   a  and the right freezing compartment door  202   b  may be disposed adjacent to each other and may have the same size. Of course, although the refrigerator having a structure in which a refrigerating compartment  11  is disposed at an upper side, and a freezing compartment  12  is disposed at a lower side is described as an example in the embodiment, the present disclosure may be applied to all types of refrigerators equipped with a door without being limited to types of refrigerators. 
     An outer appearance of the front surface of the refrigerator  1  may be defined in the state in which the door  20  is closed and may define the out appearance of the refrigerator  1  viewed from the front in the state in which the refrigerator  1  is installed. The door  20  may have a structure in which a front surface selectively emits light and may be configured to shine with set color or brightness. Thus, a user may change front color or brightness of the door  20  without separating or disassembling the door  20  and may change the overall outer appearance of the refrigerator  1 . 
     Hereinafter, the structure of the door  20  will be described in detail with reference to drawings. In addition, an embodiment of the present disclosure will be described with reference to the left refrigerating compartment door  201   a , and other doors  201   b ,  202   a , and  202   b  may also have the same structure. 
       FIG.  3    is a perspective view of the door. Also,  FIG.  4    is an exploded perspective view illustrating a state in which a panel assembly and a door body, which are components of the door, are separated from each other. Also,  FIG.  5    is a rear perspective view of the panel assembly. 
     As illustrated in the drawings, the door  20  may include a door body  21  defining the overall shape of the door  20 , and a panel assembly  30  defining an outer appearance of a front surface of the door  20 . That is, the door  20  may be configured so that the panel assembly  30  is mounted on a front surface of the door body  40 . 
     The door body  40  may include a body plate  41  defining a front surface and a door liner  42 ,  212  defining a rear surface. The body plate  41  may be made of a metal material and disposed to face a rear surface of the panel assembly  30 . The door liner  42  may be made of a plastic material and may form a bottom shape of the door  20 . 
     The door body  40  may include a side decoration  44  defining right and left side surfaces of the door body  21 . The side decoration  44  may connect both right and left ends of the body plate  41  and both right and left ends of the door liner  42 . 
     The door body  40  may include an upper cap decoration  43  and a lower cap decoration  45  that form top and bottom surfaces of the door body  40 . The upper cap decoration  43  may be connected to an upper end of the side decoration  44 , an upper end of the body plate  41 , and an upper end of the door liner  42 . The lower cap decoration  45  may be connected to a lower end of the side decoration  44 , a lower end of the body plate  41 , and a lower end of the door liner  42 . 
     An outer appearance of the door body  40  may be defined by the body plate  41 , the door liner  42 , the side decoration  44 , the upper cap decoration  43 , and the lower cap decoration  45 . In addition, an insulator may be filled in an internal space of the door body  40 , which is defined by coupling the body plate  41 , the door liner  42 , the side decoration  44 , the upper cap decoration  43 , and the lower cap decoration  45 . 
     The panel assembly  30  may be inserted into and mounted on the front surface of the door body  40 . For example, the side decoration  44  may further protrude forward and may be in contact with both ends of the panel assembly  30 . In addition, a top surface of the panel assembly  30  may define the same plane as the upper cap decoration  43  to define the top surface of the door  20 , and the bottom surface of the panel assembly  30  has the lower cap decoration  45  to define the same plane as the bottom surface of the door  20 . 
     In addition, a wire  369  connected to the panel assembly  30  may be disposed on the door body  40 . The wire  369  may be provided as a plurality of wire-type electrical wires and may be connected to the lighting device  36  of the panel assembly  30 . 
     The wire  369  may be connected to the panel assembly  30  via the inside of the door body  40 . In detail, one end of the wire  369  may be connected to the lighting device  36 , lead into the door body  40  through a wire hole  411  defined in the front surface of the door body  40 , and lead out of the door body  40  through the hinge mounting portion  431  disposed on an upper end of the door body  40 . 
     The wire hole  411  may be opened to pass through the body plate  41  and may be disposed at a side that is farther from one side on which the upper hinge  204  is mounted among left and right sides. For example, the upper hinge  204  may be mounted at the left side of the door  20 , and thus, the wire hole  411  may be defined in the right side of the body plate  41 . 
     The upper hinge  204  may be mounted on the hinge mounting portion  431 , and the wire  369  may be guided to the cabinet  10  through the upper hinge  204  and be connected to the controller  13  disposed on the cabinet  10 . The wire  369  may have a structure connected between the panel assembly  30  and the door body  40  by a connector. Thus, when the panel assembly  30  is separated and mounted on the door body  40 , the wire  369  may be easily connected. 
     The panel assembly  30  may be provided in a plate shape and may define an outer appearance of the front surface of the door  20  while being mounted on the front surface of the door body  40 . Since the panel assembly  30  may form the outer appearance of the front surface of the door  20 , the panel assembly  30  may be referred to as a door panel, and since the panel assembly  30  may form the outer appearance of the front surface of the refrigerator  1 , the panel assembly  30  may also be referred to as an exterior panel. 
     The panel assembly  30  may be detachably mounted on the door body  40 . An upper protrusion  343  and a lower protrusion  473 ,  474 , which protrude backward, may be disposed on upper and lower ends of the rear surface of the panel assembly  30 , respectively. In addition, an upper mounting portion  412  on which the upper protrusion  343  is inserted and mounted may be opened at the upper end of the front surface of the door body  40 , and the lower mounting portion into which the lower protrusions  473  and  474  are inserted and mounted may be disposed on the bottom surface of the door body  40 , i.e., the lower cap decoration  45 . 
     In addition, although not shown in detail, the upper protrusion  343  may be restricted by an upper cover  46  mounted on an opened top surface of the upper cap decoration  43 . In addition, a screw that restricts the lower end of the panel assembly  30  may be coupled through the lower cap decoration  45 , and thus, the panel assembly  30  may be firmly mounted to the door body  40 . 
     In addition, as necessary, the panel assembly  30  may have a structure that is detachably mounted on the door body  40  for services and maintenance. In the state in which the panel assembly  30  is separated, the substrate protrusion  361   b  of the lighting device  36  may be exposed to the lower end of the rear surface of the panel assembly  30 , and the wire  369  may be connected thereto. 
     In this case, the substrate protrusion  361   b  may protrude backward and also may protrude more than the back cover  39  defining the rear surface of the panel assembly  30 . In addition, a cover opening  398  that is opened so that the substrate protrusion  361   b  and a protrusion guide  357  protrude may be further defined in an edge of a lower end of the back cover  39 . For example, the cover opening  398  may be provided by cutting edges of side and lower ends of the back cover  39 . 
     The substrate protrusion  361   b , the protrusion guide  357  and/or the cover opening  398  may be disposed at one end that is far from the mounting position of the upper hinge  204  and the lower hinge  205  among the left and right sides. Thus, when the panel assembly  30  is detached, an interference with the lower hinge  205  may be minimized. That is, the substrate protrusion  361   b , the protrusion guide  357 , and/or the cover opening  398  may be disposed at one side of the rotation shaft of the door  20  among the left and right sides. In addition, the substrate protrusion  361   b  may be disposed at a position facing the wire hole  411 , and the wire  369  may be more easily connected. 
     A front surface of the panel assembly  30  may be exposed forward in the state in which the panel assembly  30  is mounted on the door body  40 , and the panel assembly  30  may substantially form the outer appearance of the front surface of the door  20 . That is, a color of the outer appearance of the front surface of the door  20  may be determined by a color of the front surface of the panel assembly  30 . In addition, the entire front surface of the panel assembly  30  may be configured to shine in a color specified by the user through the lighting device  36  and may be changed to various colors selected by the user to express the color of the front surface of the door  20  in various manners. 
     Hereinafter, the structure of the panel assembly  30  will be described in more detail with reference to drawings.  FIG.  6    is a cross-sectional view taken along line VI-VI′ of  FIG.  4   . Also,  FIG.  7    is an exploded perspective view of the panel assembly. As illustrated in the drawings, the panel assembly  30  may include a panel  31  forming an outer appearance of the front surface, the lighting device  36  emitting light to cause the panel  31  to shine, a light guide plate  33  guiding light emitted from the lighting device  36 , and a transmission member  32  on which the panel  31  is mounted. 
     The panel assembly  30  may include an upper bracket  34  forming a top surface of the panel assembly  30  and a lower bracket  35  forming a bottom surface of the panel assembly  30 . The lighting device  36  may be mounted on the lower bracket  35 . The panel assembly  30  may further include a back cover  39  forming a rear surface. 
     In more detail, the panel  31  may be provided in a rectangular plate shape and may be made of a material that transmits light therethrough. For example, the panel  31  may be made of a glass material such as blue glass, white glass, and vapor deposition glass or may be made of other materials for transmitting light therethrough, such as acrylonitrile butadiene styrene (ABS), a polymethyl methacrylate (PMMA), or a polycarbonate (PC). In addition, the panel  31  may have a thickness set so as not to be easily broken due to characteristics of defining an outer appearance thereof. The panel  31  may have a thickness greater than that of the light guide plate  33 . For example, the panel  31  may have a thickness of approximately 3 mm to 5 mm. The panel  31  may be referred to as a transparent plate or an out plate. 
     The panel  31  may be transparent to allow light reflected by the light guide plate  33  to be transmitted. In this case, the transparency may be defined as a degree to which the light reflected from the light guide plate  33  is transmitted and irradiated to the outside to identify that the panel  31  shines in a specific color. In addition, in all embodiments of the present disclosure, the terms “transparent” and “transmission” may be defined as a state in which the light passes to display a set color through the panel  31 . 
     In addition, the panel  31  may be provided to have a color. That is, in a state in which the lighting device  36  is turned off, a color of the front surface of the door  20  may be expressed by the color of the panel  31 . The color of the panel  31  may not be changed in a state in which the lighting device  36  is turned off, and the user may select and install a color desired by the user through replacement of the panel assembly  30 . In addition, the color of the panel  31  may be defined as a first color when the lighting device  36  is turned off. That is, the color of the panel  31  itself may be defined as the first color. 
     For example, a specific design or pattern may be printed on the panel  31  to have specific color. A film with a specific design or pattern printed thereon may be added to the panel  31 , surface treatment such as imprinting, etching, and glass printing may be performed on the panel  21 , or a coating or deposition layer having specific color and texture may be provided to define an outer appearance of the panel  31 . 
     The front plate  31  may be configured to transmit light emitted from the lighting device  36  but components behind the front plate  31  may not be seen therethrough. That is, in the state in which the lighting device  36  is turned off, components inside the panel assembly  30  may be prevented from being seen to the outside through the panel  31  due to the color of the panel  31 . 
     Here, the panel  31  may be provided with a color layer  311  having a color. Here, in an off state, the color layer  311  may have at least color having brightness equal to or greater than 0 other than black. That is, in a state in which the refrigerator  1  is installed, the front surface of the refrigerator  1  may be displayed in a color other than black, and the color of the front surface of the refrigerator may be changed according to an operation of the lighting device  36 . 
     The panel  31  may define the outer appearance of the front surface of the panel assembly  30 , which is exposed to the outside. The panel  31  may have a size less than that of the light guide plate  33 . Thus, the light emitted from the light guide plate  33  toward the panel  31  may be evenly irradiated to the entirety including an outer end the panel  31 , and the entire panel  31  may be brightly shine without being partially darkened. 
     A rear surface of the panel  31  may be mounted on a front surface of the transmission member  32 . Here, a horizontal width of the panel  31  may correspond to a horizontal width of the transmission member  32 . Thus, in the state in which the panel  31  is mounted, both left and right ends of the transmission member  32  and both left and right ends of the panel  31  may be disposed on the same plane and define both left and right surfaces of the panel assembly  30 . Thus, in the state in which the panel  31  is attached to the transmission member  32 , when viewed from the front, the components disposed behind the panel in addition to the transmission member  32  may not be exposed to the outside, and the outer appearance of the front surfaces of the panel assembly  30  and the door  20  may be defined. 
     The light guide plate  33  may be positioned at a rear spaced apart from the panel  31  and may be configured to guide light emitted from the lighting device  36  disposed below the light guide plate  33  forward toward the panel  31 . For example, the light guide plate  33  may be made of a transparent acrylic, plastic, or transparent polymer material. The light guide plate  33  may have a diffusing agent added thereto for diffusing light entrance on the light guide plate  33  or a pattern for diffusing light may be further formed on the light guide plate  33 . Thus, light may be transferred to the panel  31  by the light guide plate  33 , and in this case, a pattern of the light guide plate  33  may be set to cause the entire front surface of the panel  31  to glow with uniform brightness. 
     For example, the light guide plate  33  may have a pattern that increases in density upward from a center of the light guide plate  33  so as to have uniform brightness as a whole, and the density of the pattern may gradually increase from the center toward both left and right sides. In addition, the pattern may not be provided at a position closest to the lighting device  36  on the lower end of the light guide plate  33 , or the density of the pattern may be provided to be relatively low. 
     The light guide plate  33  may be entirely provided in a rectangular plate shape and may be formed with a size somewhat greater than that of the panel  31 . In detail, the light guide plate may have a width less than that of a left and right width of the panel  31  and greater than a vertical length of the panel  31  so as to be mounted on the transmission member  32 . 
     In addition, although not shown in detail, a reflective layer  331  may be disposed on a rear surface of the light guide plate  33  so that light inside the light guide plate  33  is directed forward. Thus, the light moving along the light guide plate  33  may be induced to be irradiated toward the panel  31 . In addition, the reflective layer may be disposed on each of both ends and an upper end of the light guide plate  33  except for the lower side, on which the lighting device  36  is mounted, so that all the light is directed to the inside of the light guide plate  33  without leaking around the light guide plate  33 , and thus, the panel  31  may shine more brightly and uniformly. The light guide plate  33  may be supported by the back cover  39  from the rear and may be fixed to be maintained at a predetermined interval from the panel  31  by the transmission member  32 . 
     The transmission member  32  may be disposed between the panel  31  and the light guide plate  33 . The transmission member  32  may be used to fixedly mount the light guide plate  33  and the panel  31 , and in particular, may maintain the light guide plate  33  at a predetermined interval from the panel  31 . 
     The transmission member  32  may have a front surface supporting the panel  31  and both left and right surfaces that restrict the light guide plate  33  disposed at a rear side thereof. The transmission member  32  may be referred to as a support member or a fixing member because the panel  31  and the light guide plate  33  are mounted thereon. In addition, since the transmission member  32  is provided to allow light to pass therethrough, the transmission member  32  may be referred to as a transparent plate. In addition, since the transmission member  32  may have a structure including the side surface of the panel assembly  340 , the transmission member  32  may be referred to as a panel frame. 
     The transmission member  32  may be made of a material capable of transmitting light therethrough and may be provided as a whole by injection or extrusion as a single component. That is, the transmission member  32  may be made of a material having a property of allowing light to pass through and having moldability. For example, the transmission member  32  may be made of an optically transparent ABS material. In addition, the transmission member  32  may be made of various transparent plastic materials, such as polycarbonate (PC), acrylic, or the like. The light reflected from the light guide plate  33  may be transmitted to pass through the panel  31 . 
     The light transmission performance and transparency of the transmission member  32  means a degree to which light irradiated from the rear light guide plate  33  passes through the transmission member  32  to illuminate the panel  31 . In addition, a light diffusing agent may be added when the transmission member  32  is molded. The light diffusing agent may diffuse the light passing through the transmission member  32  and may allow the light to be irradiated more evenly to the entire front panel  31 . 
     The transmission member  32  may be entirely made of a resin material. Also, the panel  31  may be mounted on the front surface of the transmission member  32  with respect to the transmission member  32 , and the light guide plate  33  may be disposed on the rear surface of the transmission member  32 . 
     The transmission member  32  may include a front surface portion (or front surface wall)  321  having a plate shape, and a side surface portion (or side surface wall)  322  that protrudes backward from each of both right and left ends of the front surface portion  321 . The front surface portion  321  may be disposed between the panel  31  and the light guide plate  33 , the front surface may support the panel  31 , and the rear surface may support the light guide plate  33 . 
     The front surface portion  321  may be provided in the plate shape having a size corresponding to that of the panel  31 , and an adhesive member  313  may be applied around the front surface portion  321  so that the panel  31  adheres to the transmission member  32 . Here, the adhesive member  313  may be made of a transparent material or a material capable of transmitting light, and the panel  31  may be configured so that the entire area including an area to which the adhesive member  313  is applied shines. 
     A left and right width of the front surface portion  321  may be the same as a left and right width of the panel  31 . In addition, the upper end of the front surface portion  321  may protrude more upward than the upper end of the panel  31 , and the lower end of the front surface portion  321  may protrude more than the lower end of the panel  31 . That is, the front surface portion  321  may have a size greater than that of the panel  31 , and in particular, may have a length greater than a vertical length of the panel  31 . 
     In addition, the front surface portion  321  may have a structure connecting the side surface portions  322  respectively disposed at both the left and right sides. That is, the front surface portion  321  may be continuously disposed between the side surface portion  322  and may extend from the side surface portion  322  at one side to the side surface portion  322  at the other side. 
     In the state in which the light guide plate  33  is mounted, the rear surface of the front surface portion  321  may be maintained in the state of being in contact with the front surface of the light guide plate  33 . Thus, the light guide plate  33  may be always maintained at a constant distance from the panel  31 . Here, the front surface portion  321  may be extruded to be maintained at set flatness, and thus, when the light guide plate  33  is mounted, the front surface portion  321  may be in contact with the entire front surface of the light guide plate  33 . Thus, the molding may be performed to prevent an irregular interval or gap from occurring between the front surface portion  321  and the light guide plate  33 . 
     The side surface portion  322  may be disposed along both the left and right ends of the light guide plate  33 . The side surface portion  322  may be stepped with respect to upper and lower ends of the front surface portion  321  and may be provided to match side ends of the upper bracket  34  and the lower bracket  35 . 
     The transmission member  32  may have the same cross-sectional structure in the vertical direction and thus may be simply molded by the extrusion. Simultaneously, a structure in which the panel  31  and the light guide plate  33  are mounted using the front surface portion  321  and the side surface portion  322  may be provided. In addition, the upper bracket  34  and the lower bracket  35  may be mounted through the structure of the side surface portion  322 . 
     The upper bracket  34  may be provided at an upper end of the panel assembly  30 . The upper bracket  34  may form a top surface of the panel assembly  30 . The upper bracket  34  may be injection-molded with a plastic material, and may provide a structure coupled to the transmission member  32  and a structure coupled to the back cover  39 . 
     The upper bracket  34  may extend from an upper left end to a right end of the transmission member  32  and may shield the transmission member  32  of the panel assembly  30  and an upper end of the light guide plate  33  so as not to be exposed. In addition, the upper bracket  34  may shield at least a portion of the upper end of the panel  31 . Thus, when viewed from above, a top surface of the panel  31  may be defined by the upper bracket  34 , and other components constituting the panel assembly  30  may be prevented from being exposed upward. 
     The back cover  39  may be coupled to the rear surface of the upper bracket  34 . That is, when the back cover  39  is coupled, the upper bracket  34  may support the upper end of the light guide plate  33  at the rear side. 
     The lower bracket  35  may be provided at the lower end of the panel assembly  30 . The lower bracket  35  may form a bottom surface of the panel assembly  30 . The lower bracket  35  may be injection-molded with a plastic material and may provide a structure coupled to the transmission member  32  and a structure coupled to the back cover  39 . 
     The lighting device  36  may be mounted on the lower bracket  35 . The lighting device  36  may be provided inside the lower bracket  35  to irradiate light toward the light guide plate  33  and may be assembled and mounted with the lower bracket  35  in the state of being mounted on the lower bracket  35 . The lower bracket  35  may be referred to as a light bracket or a bracket because the lighting device  36  is mounted thereon. 
     The lower bracket  35  may be coupled to a lower end of the transmission member  32  and may extend from a left end to a right end of the lower end of the transmission member  32 . The back cover  39  may be coupled to the rear surface of the lower bracket  35 . When the back cover  39  is coupled, the lower bracket  35  may support the light guide plate  33  at the rear side. Thus, during a process in which the panel assembly  30  is assembled, both right and left ends of the light guide plate  33  may be fixed by the transmission member  32 , and the upper and lower ends of the light guide plate  33  may be supported by the upper bracket  34  and the lower bracket  35  at the rear side. 
     The back cover  39  may form a rear surface of the panel assembly  30  and may be coupled to the upper bracket  34  and the lower bracket  35 . The back cover  39  may be made of a metal material such as stainless or aluminum. The back cover  39  may be formed with a size corresponding to the size of the panel assembly  30  and may form an entire shape of the rear surface of the panel assembly  30 . 
     The rear surface of the light guide plate  33  may be supported by a cover protrusion  391  protruding on the center of the back cover  39 , at the rear side. Thus, the light guide plate  33  may have a plate-shaped structure having a large size, but in the state in which the back cover  39  is mounted, the light guide plate  33  may have the overall stable support structure and may be maintained in the stably mounted state. The upper bracket  34  and the lower bracket  35  may be provided at positions corresponding to an upper end and a lower end of the back cover  39 . 
     Right and left ends of a cover circumferential portion  392 , which form a circumference of the back cover  39 , may be in contact with the side surface portion  322  of the transmission member  32 , and upper and lower ends of the cover circumferential portion  392  may be in contact with the upper bracket  34  and the lower bracket  35 , respectively. A plurality of screws  399  may be coupled to the upper and lower ends of the cover circumferential portion  392  and may be coupled to the upper bracket  34  and the lower bracket  35  through the back cover  39  to fixedly mount the back cover  39 . 
     The structure of each of the component constituting the panel assembly  30  will be described in more detail below with reference to the drawings.  FIG.  8    is an exploded perspective view illustrating a state in which the upper bracket, the transmission member, and the back plate, which are components of the panel assembly, are disassembled. 
     As illustrated in the drawings, the upper bracket  34  may have a length corresponding to a length of the panel assembly  30  in a right and left direction. In addition, the upper bracket  34  may define a top surface of the panel assembly  30  in a state of being mounted on the transmission member  32 . 
     In addition, the upper bracket  34  may include an upper bracket extension portion  341  and an upper bracket top surface portion  342  as a whole. The upper bracket extension portion  341  may be configured to the upper bracket  34  may be disposed in parallel with the panel  31  and the light guide plate  33  to extend in the vertical direction. 
     In addition, an upper bracket mounting portion  344  disposed to be stepped forward may be disposed on each of both left and right ends of the upper bracket extension portion  341 . The upper bracket mounting portion  344  may be provided to be stepped with respect to the upper bracket extension portion  341  and may be inserted into an opened space of the upper end of the side surface portion  322  of the transmission member  32 . 
     In the state in which the upper bracket  34  is mounted on the transmission member  32 , the upper bracket mounting portion  344  may be fixed in the bracket insertion space  325 , and the remaining upper bracket extension portion  341  may be exposed between both the side surface portions  322  to support the upper end of the back cover  39  and to be coupled to the upper end of the back cover  39 . 
     The upper protrusion  343  protruding backward may be disposed on a rear surface of the upper bracket extension portion  341 . The upper protrusion  343  may be configured to mount the panel assembly  30  and may be coupled to the upper mounting portion  412  of the front surface of the door body  40 . 
     In addition, the upper protrusion  343  may protrude from an upper end of the rear surface of the upper bracket extension portion  341  and be provided in plurality at regular intervals along the upper bracket  34 . In addition, the upper protrusion  343  may protrude to pass through the protrusion opening  395  of the back cover  39  when the back cover  39  is mounted. 
     An upper bracket screw hole  345  to be coupled to the screw  399  may be defined in the upper bracket extension portion  341 . The upper bracket screw hole  345  may be defined at a position corresponding to the cover screw hole  397 . Thus, when the back cover  39  is mounted, the screws  399  may be coupled to sequentially pass through the cover screw hole  397  and the upper bracket screw hole  345 . 
     The upper bracket top surface portion  342  may be disposed on an upper end of the upper bracket extension portion  341 . The upper bracket top surface portion  342  may define the top surface of the panel assembly  30  and may extend in a direction perpendicular to the upper bracket extension portion  341 . 
     In detail, the upper bracket top surface portion  342  may extend forward from the upper end of the upper bracket extension portion  341 . The front end of the upper bracket top surface portion  342  may extend to shield at least a portion of the upper end of the panel  31  and be disposed to shield upper ends of the transmission member  32  and the light guide plate  33 . 
     Thus, the upper bracket  34  may be fixedly coupled to the upper end of the transmission member  32  and be in the state of being fixed to the back cover  39  by the screw  399  to restrict upward movement of the light guide plate  33  and define a shape of the top surface of the panel assembly  30 . 
       FIG.  9    is an exploded perspective view illustrating a state in which the lower bracket, the transmission member, and the back plate, which are components of the panel assembly, are disassembled. As shown in the drawing, in the state in which the panel  31  is mounted on the front part  321  of the transmission member  32 , and the light guide plate  33  is mounted on the side surface portion  322 , the lower bracket  35  may be mounted on the lower end of the transmission member  32 . 
     Here, the left and right side ends of the lower bracket rear surface portion  352  may be inserted into the opened space of the side surface portion  322 , and thus, the lower bracket  35  may be fixedly mounted to the lower end of the transmission member  32 . 
     A lower bracket screw hole  352   c  to which a plurality of screws  397   b  are coupled may be defined in the lower bracket rear surface portion  352 . The lower bracket screw hole  352   c  may be defined at a position corresponding to a cover screw hole  397 , and when the back cover  39  is mounted, the screw  399  may sequentially pass through the cover screw hole  397  and the lower bracket screw hole  352   c  and then be coupled. 
     The back cover  39  may be firmly coupled to the lower bracket  35  by coupling the screw  399 , and the lower bracket  35  may be inserted into the transmission member  32  and be primarily fixed and then may be secondarily firmly fixed by the screw  399  coupled to the back cover  39 . Since the lower bracket  35  is maintained in the firmly mounted state, the lower portion of the light guide plate  33  may be firmly supported by the lower bracket  35 . Therefore, even when the door  20  is repeatedly opened or closed, or the light guide plate  33  is contracted and expanded due to heat, the light guide plate  33  may be maintained at the mounting position so that the light emitted from the lighting device  36  is secured to be irradiated to an accurate position. 
     The back cover  39  connected to the upper bracket  34  and the lower bracket  35  by the screw  399  may have an upper end supported on the upper bracket extension portion  341  and a lower end coupled to the lower bracket rear surface portion  352 , and thus, both ends of the back cover  39  may be maintained in the state of being supported on the side surface portion  322 . Thus, the back cover  39  may shield a space between the side surface portion  322 , which is disposed at each of both left and right sides, the upper bracket  34 , and the lower bracket  35  and define the rear surface of the panel assembly  30 . 
     A cover bent portion  396  that is bent forward may be further disposed on a lower end of the back cover  39 . The cover bent portion  396  may be inserted into the bracket opening  352   a  of the lower bracket rear surface portion  352  and may be in contact with a bottom surface of the heat dissipation member  37  that is in contact with the lighting device  36 . Thus, heat generated during an operation of the lighting device  36  may be conducted to the entire back cover  39  through the heat dissipation member  37  and the cover bent portion  396  and thus may be effectively dissipated. 
     In addition, the cover opening  398  may be defined in the back cover  39 . The cover opening  398  may be opened to expose the protrusion guide  357  and the substrate protrusion  361   b . For example, the cover opening  398  may be provided by cutting edges of the lower end and the side end of the back cover  39 . 
     The panel assembly  30  may include a lower decoration  47 . The lower decoration  47  may define an outer appearance of the lower end of the panel assembly  30 , and the lower end of the panel assembly  30  may be fixed to the door body  40 . 
     The lower decoration  47  may be made of a plastic material and may be coupled under the lower bracket  35  to shield the lower bracket  35 . That is, in the state in which the panel assembly  30  is mounted on the door body  40 , the lower bracket  35  may not be exposed by the lower decoration  47  and be coupled to the door body  40 . 
     The lower decoration  47  may have a length corresponding to that of the lower end of the panel assembly  30 . In addition, the lower decoration  47  may include a decoration front surface  471  and a decoration bottom surface  472 . A bracket mounting space  470  in which the lower bracket  35  is inserted and mounted may be defined by the decoration front surface  471  and the decoration bottom surface  472 . 
     The decoration front surface  471  may shield the front surface of the lower bracket  35  and may extend up to the lower end of the panel  31 . In addition, the decoration front surface  471  may be exposed to the lower end of the front surface of the panel assembly  30 . 
     The decoration bottom surface  472  may support the lower bracket  35  from the lower side. In addition, although not shown in detail, a restriction groove in which the restriction protrusion protruding from the bottom surface of the lower bracket  35  is hooked to be restricted may be further defined in the decoration bottom surface  472 . Thus, the lower decoration  47  may be coupled to the lower bracket  35  in the state of shielding the lower bracket  35  and may define the lower end of the panel assembly  30 . 
     In addition, the lower protrusion  473  protruding upward after extending backward may be provided on a rear end of the decoration bottom surface  472 . The lower protrusion  473  may be coupled to the lower portion of the door body  40  and may be maintained in the state in which the lower end of the panel assembly  30  is coupled to the door body  40 . 
       FIG.  10    is a perspective view illustrating a state in which the lighting device is mounted on the lower bracket that is one component of the panel assembly. In addition,  FIG.  11    is an exploded perspective view illustrating the lower bracket, the lighting device, and the heat dissipation member.  FIG.  12    is a perspective view of the lower bracket. 
     As illustrated in the drawings, the lower bracket  35  may have a corresponding to the right and left direction length of the panel assembly  30 . The lower bracket  35  may broadly include the lower bracket front surface portion (or lower bracket front surface)  351 , a lower bracket rear surface portion (or lower bracket rear surface)  352 , a lower bracket side surface portion (or lower bracket side surface)  353 , and a lower bracket bottom surface portion (or lower bracket bottom surface)  354 . 
     The lower bracket front surface portion  351  may define a shape of the front surface of the lower bracket  35 , and a panel support portion  351   a  may be disposed on the upper end of the lower bracket front surface portion  351  to define the lower end of the panel  31 . That is, the panel support portion  351   a  may protrude more upward than an upper end of a light source of the lighting device  36  and may protrude to a set height to prevent the lighting device  36 , i.e., an LED  362  from being exposed forward. The panel support portion  351   a  may hide an area generated due to intensive light irradiation at the lower end of the light guide plate  33  and the lower end of the panel  31 , which are disposed more adjacent to the lighting device  36 , to prevent a lighting spot from being formed on the panel  31 . 
     The lower bracket rear surface portion  352  may define a rear surface of the lower bracket  35  and may protrude more upward than the lower bracket front surface portion  351  and the lower bracket side surface portion  353  to support the light guide plate  33  at the rear side and then may be coupled to the back cover  39 . 
     A lower bracket mounting portion  352   b  that is disposed to be stepped forward may be disposed on each of both left and right ends of the lower bracket rear surface portion  352 . The lower bracket mounting portion  352   b  may be inserted and mounted into the side surface portion  322 . One end of the lower bracket mounting portion  352   b  may be cut off, and an end of the lower bracket mounting portion  352   b  may be provided in a hook shape to be hooked and restricted in an inner space of the side surface portion  322  when the lower bracket  35  is mounted. A lower bracket screw hole  352   c  to which a plurality of screws  397   b  are coupled may be defined in the lower bracket rear surface portion  352 . 
     A bracket opening may be defined in the lower bracket rear surface portion  352 . The bracket opening  352   a  may be defined at a position facing the lower bracket front surface portion  351  and may be defined to be opened in the rear surface of an accommodation space  350  in which the lighting device  36  is mounted. In addition, the lighting device  36  may be accessible through the bracket opening  352   a . The bracket opening  352   a  may be shielded by the back cover  39 . 
     The lower bracket bottom surface portion  354  may define a bottom surface of the lower bracket  35  and may define a bottom surface of the space in which the lighting device  36  is mounted. A light guide plate support portion (or light guide plate supports)  355  protruding rearward may be disposed on the lower bracket front surface portion  351 . The plurality of light guide plate supports  355  may protrude backward at a constant interval along the lower bracket front surface portion  351 . In addition, a top surface of the light guide plate support portion  355  may support a lower end of the light guide plate  33 . 
     The light guide plate support portion  355  may extend to restrict the lighting device  36  at the upper side. The light guide plate support portion  355  may extend backward while passing between the plurality of LEDs  362  disposed on the lighting device  36  and may be in contact with a top surface of the substrate  361  of the lighting device  36 . 
     In addition, a substrate support portion protrusion (reference numeral  354   a  in  FIG.  20   ) protruding upward may be disposed on the lower bracket bottom surface portion  354 . The substrate support portion protrusion  354   a  may be in contact with the bottom surface of the substrate  361 . Thus, the top and bottom surfaces of the lighting device  36  may be restricted by the light guide plate support portion  355  and the substrate support portion protrusion  354   a , and vertical movement of the lighting device  36  may be restricted. 
     The lighting device  36  may be provided within the lower bracket  35 . The lighting device  36  may include a substrate  361  and an LED  362 . The substrate  361  may be formed in a plate shape to be accommodated within the lower bracket  35  and may extend from one end of the lower bracket  35  to the other end. The plurality of LEDs  362  may be continuously disposed at a predetermined interval on the substrate  361 . 
     In addition, a protrusion guide  357  may be disposed on one end of both the left and right ends of the lower bracket  35 . The protrusion guide  357  may be configured to so that a portion of the substrate  361  of the lighting device  36  disposed inside the lower bracket  35  is exposed, and the wire  369  may be connected to the substrate  361  through the protrusion guide  357 . 
     The protrusion guide  357  may be disposed on one end that is far from a rotation shaft of the door  20  among both the left and right ends and may protrude more backward than the lower bracket rear portion  352 . In addition, the protrusion guide  357  may have an opening  357   a  defined in a rear surface of the protrusion guide  357 . In addition, the substrate protrusion  361   b  may be exposed through the opening  357   a . A space inside the protrusion guide  357  may communicate with the accommodation space  350 . 
     In addition, a lower support portion  359  supporting one end of the substrate  361 , on which the substrate protrusion  361   b  is disposed, from the lower side may be disposed to protrude from the inside of the protrusion guide  357 . In addition, an upper support portion  358  extending below an upper end of the bracket opening  352   a  and supporting the top surface of the substrate  361  on which the substrate protrusion  361   b  is disposed may be provided. One end of the substrate  361  on which the substrate protrusion  361   b  is disposed may have top and bottom surfaces that are stably supported by the upper support portion  358  and the lower support portion  359 , and thus, when the wire  369  is connected to the substrate  361 , the substrate  361  may be prevented from moving or being separated from the mounted position. 
     The heat dissipation member  37  may be provided within the lower bracket  35 . The heat dissipation member  37  may support the lighting device  36  within the lower bracket  35 . In addition, the heat dissipation member  37  may be made of a metal material to dissipate heat generated by the lighting device  36  by conduction and may be provided in a size that is enough to be accessible through the bracket opening  352   a.    
     The heat dissipation member  37  may include a first supporting portion  372  supporting the lighting device  36  and a second supporting portion  371  that is in contact with the back cover  39 . The first supporting portion  372  may be disposed on the lower bracket bottom surface portion  354  within the lower bracket  35 . The second supporting portion  371  may extend upward from a rear end of the first supporting portion  372  and be exposed backward through the bracket opening  352   a  so that when the back cover  39  is mounted, the second supporting portion  371  is in contact with the back cover  39 . Thus, the heat generated by the lighting device  36  may be transferred to the back cover  39  through the heat dissipation member  37  so as to be dissipated. 
     Hereinafter a structure of the lighting device  36  will be described in more detail with reference to the drawings.  FIG.  13    is a plan view of the lighting device. Also,  FIG.  14    is an enlarged view illustrating a portion A of  FIG.  13   . Also,  FIG.  15    is an enlarged view illustrating an opposite surface of the portion A. 
     As illustrated in the drawings, the lighting device may include a plate-shaped substrate and a plurality of LEDs disposed along the substrate. The substrate  361  may have a length corresponding to a horizontal length of the light guide plate  33  or a length slightly greater than that of the light guide plate  33  and may have a size corresponding to that of the accommodation space  350  of the lower bracket  35 . Thus, the LEDs  362  may be disposed along an end of the light guide plate  33  to sufficiently irradiate light to both the ends of the light guide plate  33 . 
     In detail, the LEDs  362  may be disposed to irradiate light toward the lower end of the light guide plate  33 . The LEDs  362  may provide a space in which the LEDs  362  are continuously disposed from a left end to the other end of the light guide plate  33 . In addition, the left side end and the right side end of the substrate  361  may be in contact with the lower bracket side surface portion  353  within the lower bracket  35  and may restrict right and left movement. 
     Each of the LEDs  362  may be configured as an RGB LED, for example. The LED  362  may include an RGB LED for irradiating light with various colors under a control of the controller  13 . That is, the LED  362  may irradiate light with various colors by combining the colors of the irradiated light under the control of the controller  13 , and thus, the panel  31  may shine with various colors set by the controller  13 . According to color of the panel  31 , a color of the outer appearance of the front surface of the refrigerator  1  may be determined. 
     The LED  362  may include an LED irradiating light with a specific color other than the RGB LED and may include a combination of a plurality of LEDs that irradiate light with different colors. In addition, in the light device, other light sources capable of performing the same operation in addition to the LED  362  may be disposed. 
     The LED  362  may be mounted at a constant interval on the substrate  361 , and the appropriate number of light sources  362  may be arranged to allow the panel  31  to shine with set brightness. For example, the LED  362  may be arranged at an interval of about 6.3 mm to about 7.0 mm, brightness thereof may reach target brightness of the panel  31 , and the entire surface of the panel  31  may shine with uniform brightness equal to or greater than about 80%. An interval between the LED  362  may be less than the right and left width of the light guide plate support portion  355 , and thus the light guide plate support portion  355  may be disposed between the light sources  362 . 
     When looking at the structure of the substrate  361  in more detail, the substrate  361  may include an LED mounting portion (or LED mounting region)  361   a , on which the LED  362  is mounted, and a substrate protrusion  361   b  on which a soldering portion  364 , to which a wire  369  for an operation of the LED  362  is connected, is disposed. That is, the substrate  361  may extend to be elongated in the horizontal direction to mount the plurality of LEDs  362  thereon, and one side of the substrate  361  may have a shape protruding backward. Due to such a shape, the LED mounting portion  361   a  may be disposed inside the panel assembly  30 , and the substrate protrusion  361   b  may have a structure that protrudes to pass through the rear surface of the panel assembly  30 , thereby minimizing  35 hicken 35 hickenss of the panel assembly  30 . 
     The plurality of LEDs  362  may be mounted on the LED mounting portion  361   a , and the LED mounting portion  361   a  may extend to be elongated with the same length L 1  in the front and rear direction along the extension direction. Here, the length L 1  of the LED mounting portion  361   a  in the front and rear direction may have a size less than a distance D 1  between the front surface of the panel  31  and the back cover  39 . In addition, the length L 1  of the LED mounting portion  361   a  in the front and rear direction may be determined to be a minimum length required for arranging the LEDs  362 . 
     In addition, the LED mounting portion  361   a  may have an emission area  365  on which the plurality of the LEDs  362  are disposed. The emission area  365  may correspond to an entire top surface of the LED mounting portion  361   a , and the plurality of LEDs  362  may be arranged in a line on the emission area  365 . The emission area  365  may be referred to as a first substrate area. 
     Only the LEDs  362  may be disposed within the emission area  365 , and thus, the LEDs  362  may be sequentially disposed from both left and right ends of the LED mounting portion  361   a . In the emission area  365 , a soldering portion  364  or other elements  365   a  and  365   b  other than the LEDs  362  may not be disposed, and the LEDs  362  may be densely disposed. Particularly, the LEDs  362  may be disposed adjacent as possible to both left and right ends of the emission area  365 , i.e., to both left and right ends of the LED mounting portion  361   a , and thus, sufficient light may be irradiated up to both the left and right ends of the light guide plate  33  to prevent both the ends of the panel  31  from being darkened. Particularly, this arrangement of the LED  362  may be possible by disposing the soldering portion  364  connected to the wire  369  on the substrate  361  outside the emission area  365 , and the soldering portion  364  may be disposed on the substrate protrusion  361   b  protruding from the substrate  361 . 
     In addition, the LED  362  may be disposed on the top surface of the substrate  361 , and an LED element  365   b  for driving the LED  362  and elements  365   a  for inputting a signal may be disposed on the bottom surface of the substrate  361 . Thus, in the emission area  365 , no other configuration other than the LED  362  and the circuit  363  connected to the LEDs  362  may be disposed. 
     That is, the LED element  365   b  for driving the LED  362  and the element  365   a  for the signal processing may be disposed on a bottom surface of the LED mounting portion  361   a . Due to this arrangement, while minimizing the length L 1  of the LED mounting portion  361   a  in the front and rear direction, the LED  362  may be protected against noise, overvoltage, or static electricity, which are caused by the elements  365   a  and  365   b.    
     The LED  362  may be disposed at a somewhat eccentric position at a midpoint of the LED mounting portion  361   a . In detail, the LED  362  may be disposed more forward than a center line C of the midpoint of the LED mounting portion  361   a  in the front and rear direction. For example, the midpoint of the LED  362  in the front and rear direction may be disposed more forward than the center line C. 
     Due to this arrangement, the LED  362  may be disposed vertically below the light guide plate  33 , and light may be effectively irradiated to the lower end of the light guide plate  33 . In addition, the LED  362  may be disposed adjacent to the lower bracket front surface portion  351  to prevent the lower end of the panel  31  from being excessively bright by the light irradiated from the LED  362  or prevent hot spots or light leaks in which light is condensed at the lower end of the panel  31  from occurring. 
     The substrate protrusion  361   b  may protrude backward from one end of both the left and right ends of the substrate  361 . The substrate protrusion  361   b  may protrude backward from an end of the LED mounting portion  361   a.    
     The substrate protrusion  361   b  may provide a terminal area  366  on which the soldering portion  364  for the connection of the wire  369  is disposed. The substrate protrusion  361   b  may protrude so that the soldering portion  364  extending in the front and rear direction is disposed. That is, the plurality of soldering portions  364  may be disposed inside the terminal area  366 . The terminal area  366  may be referred to as a second substrate area to be distinguished from the first substrate area. 
     The soldering portion  364  may be a portion connected to the wire  369  and be configured to supply power or transmit a signal to the substrate  361  and also be configured so that a plurality of wires  369  are connected by soldering. The soldering portion  364  may extend in the front and rear direction to facilitate the connection of the wire  369 . Of course, the wire  369  may be connected in other manners, and in this case, the soldering portion  364  may be expressed as a terminal portion or a connection portion. 
     A length L 2  of the substrate protrusion  361   b  in the front and rear direction may be provided so that the soldering portion  364  is disposed and also is accommodated inside the protrusion guide  357 . For example, the length L 2  of the substrate protrusion  361   b  in the front and rear direction may be less than the length L 1  of the LED mounting portion in the front and rear direction. 
     In addition, a width W of the substrate protrusion  361   b  in the left and right direction may have a size that is enough so that all of the plurality of soldering portions  364  are disposed. To minimize the width W of the substrate protrusion  361   b  in the left and right direction, the plurality of soldering portions  364  may extend in the front and rear direction and may be separately disposed on the top and bottom surfaces of the substrate protrusion  361   b.    
     For example, a ground soldering portion  364   a  connected to a ground line  369   a  may be disposed on the top surface of the substrate protrusion  361   b . The ground soldering portion  364   a  may be disposed on the top surface of the substrate protrusion  361   b  because a ground line  369   a  capable of being independently disposed is connected. In addition, a power soldering portion  364   c  connected to a power line  369   c  and a signal soldering portion  364   b  spaced apart from the power soldering portion  364   c  and connected to a signal line  369   b  may be disposed on the bottom surface of the substrate protrusion  361   b.    
     Here, the signal soldering portion  364   b  may be disposed closer to the side end of the substrate  361  than the power soldering portion  364   c . An element  365   a  for processing a signal may be disposed on the bottom surface of the substrate  361  at the outermost side of the LED mounting portion  361   a , and thus, the signal soldering portion  364   b  to be connected to the element  365   a  may be disposed outside the substrate  361  rather than the power soldering portion  364   c  so as to be disposed closer to the element  365   a . Of course, the positions of the soldering portions  364  are not limited thereto, and the soldering portions may be disposed to be distributed on the top and bottom surfaces of the substrate protrusion  361   b  so that a required size of the terminal area  366  is minimized, and a width W of the substrate protrusion  361   b  in the left and right direction is minimized. 
     A slit  361   c  passing through the substrate  361  may be defined in the substrate protrusion  361   b . The slit  361   c  may be defined between the soldering portions  364  and may physically separate the adjacent soldering portions  364  from each other to prevent electrodes from being electrically short-circuited. For example, the soldering portion  364  may be disposed between the power soldering portion  364   c  and the signal soldering portion  364   b  and may be further disposed along between the soldering portion  364  and the LED  362 . 
     As illustrated in  FIG.  14   , the emission area  365  of the LED mounting portion  361   a  and the terminal area  366  of the substrate protrusion  361   b  may be disposed in parallel with each other. That is, the emission area  365  and the terminal area  366  may be disposed independently of each other and may be disposed in two rows side by side. Thus, the length L 1  of the emission area  365  in the front and rear direction may be minimized, and both the ends of the emission area  365  may be disposed to be closest to both the left and right ends of the light guide plate  33  so as to shine brightly up to both the ends of the light guide plate  33  and the panel  31 . 
     The emission area  365  and the terminal area  366  may be disposed side by side and at least partially overlap with each other in the extending direction of the LED mounting portion  361   a . That is, one end of the emission area  365  and the terminal area  366  may be disposed at the same position as the one end of the substrate  361  to extend in the same direction. Thus, a portion of the emission area  365  and the terminal area  366  may be disposed on the same area in the extending direction of the substrate  361  as much as the width W of the terminal area  366  in the substrate  361 . 
     In addition, the LED  362  disposed at the outermost of the plurality of the LEDs  362  may be disposed side by side to overlap at least one of the soldering portions  364  of the substrate protrusion  361   b  within the substrate  361 . The substrate  361  may have various structures according to other examples in addition to the above-described structure. 
     Hereinafter, another example of the lighting device will be described, and the same reference numerals will be used for the same components as those of the above-described example, and a detailed description thereof will be omitted.  FIG.  16    is a partial enlarged view illustrating another example of the lighting device. 
     As illustrated in the drawing, a lighting device  36  according to another embodiment may include a substrate  361  and an LED  362 . In addition, the substrate  361  may include an LED mounting portion  361   a , on which a plurality of LEDs  362  are continuously disposed, and a substrate protrusion  361   b ′ on which a soldering portion  364  is disposed. An emission area  365 ′ providing a space in which the plurality of LEDs  362  are disposed may be provided on the LED mounting portion  361   a , and a terminal area  366 ′ defining a space in which the soldering portion  364  is disposed may be provided on the substrate protrusion  361   b′.    
     The emission area  365 ′ and the terminal area  366 ′ may be disposed in parallel with each other or may be independently disposed. In addition, the emission area  365 ′ and the terminal area  366 ′ may have an arrangement structure in which at least a portion overlaps an entire substrate  361 . 
     The structure of the LED mounting portion  361   a  may be the same as the structure of the LED mounting portion  361   a  in  FIGS.  13  to  15    described above except for only the structure of the substrate protrusion  361   b ′. In detail, a ground soldering portion  364   a , a power soldering portion  364   c , and a signal soldering portion  364   b  may be disposed on the substrate protrusion  361   b ′. All the ground soldering portion  364   a , the power soldering portion  364   c , and the signal soldering portion  364   b  may be disposed on a top surface of the substrate protrusion  361   b ′ to extend in the front and rear direction 
     The ground soldering portion  364   a , the signal soldering portion  364   b , and the power soldering portion  364   c  may be spaced apart from each other, and a slit  361   c ′ may be defined between the ground soldering portion  364   a , the signal soldering portion  364   b , and the power soldering portion  364   c . The slit  361   c ′ may be defined between the ground soldering portion  364   a  and the signal soldering portion  364   b , and between the signal soldering portion  364   b  and the power soldering portion  364   c , and also may be disposed between the whole of the plurality of soldering portions  364  and the LED  362 . 
     The substrate protrusion  361   b ′ may be disposed so that all the plurality of soldering portions  364  and the slit  361   c ′ are provided. Thus, a width W 1  of the substrate protrusion  361   b ′ in the left and right direction may be slightly greater than the width W of the substrate protrusion  361   b , which is illustrated in  FIGS.  13  to  15   , in the left and right direction. The lighting device may have various other examples in addition to the above-described structures. 
     Hereinafter, further another example of the lighting device will be described, and the same reference numerals will be used for the same components as those of the above-described examples, and a detailed description thereof will be omitted.  FIG.  17    is a partial enlarged view illustrating further another example of the lighting device. 
     As illustrated in the drawing, a lighting device  36  according to further another embodiment may include a substrate  361  and an LED  362 . In addition, the substrate  361  may include an LED mounting portion  361   a ″, on which a plurality of LEDs  362  are continuously disposed, and a substrate protrusion  361   b ″ on which a soldering portion  364  is disposed. An emission area  365 ″ providing a space in which the plurality of LEDs  362  are disposed may be provided on the LED mounting portion  361   a ″, and a terminal area  366 ″ defining a space in which the soldering portion  364  is disposed may be provided on the substrate protrusion  361   b″.    
     The emission area  365 ″ and the terminal area  366 ″ may be disposed in series with each other and may have an independently disposed arrangement structure. In detail, a plurality of LEDs  362  may be continuously disposed on the LED mounting portion  361   a ″. In addition, the emission area  365 ″ for continuously disposing the plurality of LEDs  362  may be defined on the LED mounting portion  361   a ″. Here, the LEDs  362  may be disposed on a top surface of the LED mounting portion  361   a ″ and may be disposed at a position more eccentric forward than a central part of the “D mounting portion  361   a ”. In addition, only the LED  362  may be disposed on the top surface of the LED mounting portion  361   a ″, and although not shown, elements for driving the LED  362  may be disposed on a bottom surface of the substrate  361 . 
     The substrate protrusion  361   b ″ may protrude laterally from one end of the LED mounting portion  361   a ″. In addition, a ground soldering portion  364   a , a signal soldering portion, and a power soldering portion  364   c  may be spaced apart from each other in the front and rear direction on the substrate protrusion  361   b ″. All the ground soldering portion  364   a , the signal soldering portion  364   b , and the power soldering portion  364   c  may be disposed on a top surface of the substrate protrusion  361   b ″ to extend in the left and right direction. 
     The ground soldering portion  364   a , the signal soldering portion  364   b , and the power soldering portion  364   c  may be spaced apart from each other, and a slit  361   c ″ may be defined between the ground soldering portion  364   a , the signal soldering portion  364   b , and the power soldering portion  364   c . The slit  361   c ″ may be defined between the ground soldering portion  364   a  and the signal soldering portion  364   b , and between the signal soldering portion  364   b  and the power soldering portion  364   c , and also may be disposed between the whole of the plurality of soldering portions  364  and the LED  362 . 
     The substrate protrusion  361   b ″ may be disposed so that all the plurality of soldering portions  364  and the slit  361   c ″ are provided. Here, since the soldering portions  364  extend in the left and right direction and are spaced apart in the front and rear direction, a width W 2  of the substrate protrusion  361   b ″ in the left and right direction may be minimized. 
     Thus, the width W 2  of the substrate protrusion  361   b ″ in the left and right direction may be slightly less than the width W of the substrate protrusion  361   b , which is illustrated in  FIGS.  13  to  15   , in the left and right direction and the width W 1  of the substrate protrusion  361   b ′, which is illustrated in  FIG.  16   . 
     Of course, if necessary, some of the soldering portions  364  may be disposed on the top surface of the substrate protrusion  361   b ″, and other portions may be disposed on the bottom surface of the substrate protrusion  361   b ″. With such a structure, the emission area  365 ″ and the terminal area  366 ″ may be continuously disposed in the extending direction of the substrate  361 . In addition, the emission area  365 ″ and the terminal area  366 ″ may be disposed side by side to at least partially overlap each other with respect to the front and rear direction. The lighting device may have various other examples in addition to the above-described structures. 
     Hereinafter, further another example of the lighting device will be described, and the same reference numerals will be used for the same components as those of the above-described examples, and a detailed description thereof will be omitted.  FIG.  18    is a partial enlarged view illustrating further another example of the lighting device. 
     As illustrated in the drawing, a lighting device  36  according to another embodiment may include a substrate  361  and an LED  362 . In addition, the substrate  361  may include an LED mounting portion  361   a , on which a plurality of LEDs  362  are continuously disposed, and a substrate protrusion  361   b ″′ on which a soldering portion  364  is disposed. An emission area  365 ″′ providing a space in which the plurality of LEDs  362  are disposed may be provided on the LED mounting portion  361   a , and a terminal area  366 ″′ defining a space in which the soldering portion  364  is disposed may be provided on the substrate protrusion  361   b″′.    
     The emission area  365 ″′ and the terminal area  366 ″′ may be disposed in parallel with each other or may be independently disposed. In addition, the emission area  365 ″′ and the terminal area  366 ″′ may have an arrangement structure in which at least a portion overlaps an entire substrate  361 . 
     The structure of the LED mounting portion  361   a  may be the same as the structure of the LED mounting portion  361   a  in  FIGS.  13  to  15    described above except for only the structure of the substrate protrusion  361   b ″′. In detail, the substrate protrusion  361   b ″′ may have a structure extending downward from a rear end of the LED mounting portion  361   a . That is, the substrate protrusion  361   b ″′ may protrude downward with respect to the LED mounting portion  361   a . In addition, due to the arrangement structure in which the substrate protrusion  361   b ″′ extends downward, the terminal area  366 ″′ may also be disposed in a direction crossing the emission area  365 ″′. 
     A ground soldering portion  364   a  connected to the ground line  369   a , a signal soldering portion  364   b  connected to the signal line  369   b , and a power soldering portion  364   c  connected to the power supply line  369   c  may be disposed on the substrate protrusion  361   b ″′. The ground soldering portion  364   a  and the signal soldering portion  364   b  may be disposed on a rear surface of the substrate protrusion  361   b ″′ to extend in the vertical direction. 
     In addition, the ground soldering portion  364   a  and the signal soldering portion  364   b  may be spaced apart from each other, and a slit  361   c ″′ may be defined between the ground soldering portion  364   a  and the signal soldering portion  364   b . The slit  361   c ″′ may be defined between the ground soldering portion  364   a  and the signal soldering portion  364   b  and may also be defined between upper ends of the ground soldering portion  364   a  and the signal soldering portion  364   b  and the LED  362 . 
     In addition, the power soldering portion  364   c  may be disposed on an entire surface of the substrate protrusion  361   b ″′. Thus, the soldering portion  364  may be dispersedly disposed on front and rear surfaces of the substrate protrusion  361   b ″′ to minimize a width W of the substrate protrusion  361   b ″′ in the left and right direction. 
     Hereinafter, a mounting structure of the lighting device  36  will be described in more detail with reference to the drawings.  FIG.  19    is a plan view illustrating a state in which the lighting device is mounted on the door bracket. Also,  FIG.  20    is a partial enlarged view illustrating a mounting state of the lighting device. Also,  FIG.  21    is a cutaway perspective view taken along line XXI-XXI′ of  FIG.  4   . Also,  FIG.  22    is a cutaway perspective view taken along line XXII-XXII′ of  FIG.  5   . 
     As shown in the drawings, the lighting device  36  may be mounted inside the lower bracket  35 , and in this case, the substrate  361  may be disposed inside the accommodation space  350 . All of the LED mounting portions  361   a  and the LEDs  362  of the substrate  361  may be exposed upward through the opened top surface of the accommodation space  350 . In addition, among the plurality of LEDs  362 , the LEDs  362  disposed at both the left and right ends may be disposed at both the left and right ends in the accommodation space  350  so as to be adjacent to both the ends of the light guide plate  33 . 
     In addition, the LEDs  362  may be disposed at an eccentric forward position on the LED mounting portion  361   a  and may be in contact with the rear surface of the lower bracket front portion  351 . Here, the lower bracket front surface portion  351  may extend more upward than the LED  362 . In addition, the LEDs  362  may be disposed vertically below the lower end of the light guide plate  33  to effectively irradiate light. 
     In the state in which the substrate  361  is mounted, the bottom surface of the LED mounting portion  361   a  may be supported downward by the substrate support portion protrusion  354   a , and the top surface of the LED mounting portion  361   a  may be supported upward by the light guide plate supporting part  355 . Thus, the LED mounting portion  361   a  may be firmly fixed without moving inside the lower bracket  35 . 
     In addition, the LED mounting portion  361   a  may be disposed within a distance D 1  between the panel  31  and the back cover  39 . That is, it is seen that the LED mounting portion  361   a  is disposed inside the panel assembly  30 . 
     The substrate protrusion  361   b  may protrude backward and may protrude further backward beyond the distance D 1  between the panel  31  and the back cover  39 . That is, the substrate protrusion  361   b  and the protrusion guide  357  accommodating the substrate protrusion  361   b  may protrude further backward than the back cover  39  and also may further protrude backward by a distance D 2  set from the substrate protrusion  361   b.    
     The protrusion guide  357  may be disposed on one end of both the left and right ends of the lower bracket  35 . In addition, the protrusion guide  357  may protrude backward from the lower bracket rear surface portion  352 . Here, the protrusion guide  357  may protrude backward through the cover opening  398  of the back cover  39 . 
     In addition, an opening  357   a  may be defined in the protruding rear surface of the protrusion guide  357 , the substrate protrusion  361   b  may be exposed backward through the opening  357   a , and the wire  369  may be connected to the soldering portion  364 . In addition, the substrate protrusion  361   b  may be more firmly fixed inside the protrusion guide  357  to prevent the mounting position of the lighting device  36  from being separated even when the panel assembly  30  is detached or prevent the wire  369  from being separated from the soldering portion  364 . 
     The substrate  361  may be fixedly mounted inside the lower bracket  35  to be maintained at the mounting position. Particularly, the substrate protrusion  361   b  may be restricted by a support portion disposed on the lower bracket  35  so that the mounting position thereof is firmly maintained even when the wires  369   a ,  369   b , and  369   c  are disconnected. 
     The support portion may include the substrate protrusion  361   b  or a lower support portion (or a lower support)  359  supporting the substrate  361  from the lower side. In addition, the support portion may include the substrate protrusion  361   b  or an upper support portion (or upper support)  358  supporting the substrate  361  from the upper side. In addition, the support portion may include the substrate protrusion  361   b  or a side support portion (or side support)  356  supporting one end of the substrate  361 . Of course, the support portion may include at least one of the lower support portion  359 , the upper support portion  358 , and the side support portion  356 . 
     When looking at this in more detail, the lower support portion  359  protruding upward may protrude from the bottom surface of the protrusion guide  357 . In addition, the lower support portion  359  may support a connection point of the LED mounting portion  361   a  and the substrate protrusion  361   b  from the lower side. 
     The lower support portion  359  may define one end (right end in  FIG.  20   ) among the left and right both ends of the protrusion guide  357 . In addition, the lower support portion  359  may protrude upward from the lower side to support the bottom surface of the substrate  361 . In addition, the lower support portion  359  may extend to cross the substrate  361  in the front and rear direction to simultaneously support and restrict the LED mounting portion  361   a  and the substrate protrusion  361   b.    
     For example, the lower support portion  359  may include a support portion groove  359   a  that supports the LED mounting portion  361   a  and a support portion protrusion  359   b  which is in contact with a side end of the substrate protrusion  361   b  to restrict the substrate protrusion  361   b . The support portion groove  359   a  may be recessed from an upper end of the lower support portion  359  and may be recessed to a size corresponding to a width of the LED mounting portion  361   a  in the front and rear direction. Thus, the LED mounting portion  361   a  may be inserted into the support portion groove  359   a  and may support the bottom surface of the substrate  361  as well as restrict movement in the front and rear direction. 
     The support portion protrusion  359   b  may protrude upward from a rear end of the support portion groove  359   a . Thus, the support portion protrusion  359   b  and the support portion groove  359   a  may be provided to be stepped with respect to each other, and the substrate  361  may be restricted by the stepped portion between the support portion protrusion  359   b  and the support portion groove  359   a . Thus, the support portion groove  359   a  may be referred to as a first stepped portion, and the support portion protrusion  359   b  may be referred to as a second stepped portion. 
     In addition, the support portion protrusion  359   b  may support one end (right end in  FIG.  20   ) of the substrate protrusion  361   b . Thus, the movement of the substrate protrusion  361   b  in the left and right direction and the movement of the substrate  361  in the left and right direction may be restricted. In addition, the LED mounting portion  361   a  of the substrate  361  and an edge of the substrate protrusion  361   b  may be restricted by the support portion groove  359   a  and the support portion protrusion  359   b  to prevent the substrate  361  from moving. 
     In addition, the substrate protrusion  361   b  may be spaced apart from a bottom surface of an inner space of the protrusion guide  357  by the lower support portion  359 . That is, the inner space of the protrusion guide  357  with respect to the substrate  361  may be spaced apart in the vertical direction, and thus, the wires  369   a ,  369   b , and  369   c  may be easily connected to top and bottom surfaces of the substrate protrusion  361   b , respectively. 
     In addition, the upper support portion  358  that supports a connection point between the LED mounting portion  361   a  and the substrate protrusion  361   b  from the upper side may be disposed above the substrate protrusion  361   b . The upper support portion  358  may be disposed above the lower support portion  359  and may be disposed at a position facing the lower support portion  359 . Thus, the substrate  361  may be restricted to be sandwiched between the upper support portion  358  and the lower support portion  359 . Thus, the upper support portion  358  may restrict the top surface of the substrate  361  from the upper side, and the lower support portion  359  may restrict the bottom surface of the substrate  361  from the lower side. 
     The upper support portion  358  may include a vertical extension portion  358   a  extending downward from an upper end of the bracket opening  352   a  and a horizontal extension portion  358   b  extending forward from a lower end of the vertical extension portion  358   a  so as to be in contact with the top surface of the substrate  361 . 
     The vertical extension portion  358   a  may be disposed on an area corresponding to the substrate protrusion  361   b . More specifically, the vertical extension portion  358   a  may be disposed above a point at which the side end of the substrate protrusion portion  361   b  and the LED mounting portion  361   a  are connected to each other. 
     In addition, the horizontal extension portion  358   b  may extend backward in a state of being in contact with the top surface of the substrate  361 . The horizontal extension portion  358   b  may extend to pass between the LEDs  362  and may extend up to an end of the LED mounting portion  361   a . That is, a specific position of the substrate  361  from which the substrate protrusion  361   b  starts to protrude by the upper support portion  358  and the lower support portion  359  may be respectively pressed from the upper and lower sides and thus may be fixed. 
     A side support portion  356  extending inward may be further disposed on one side of the protrusion guide  357 . The side support portion  356  may protrude laterally from the inner side of the lower bracket side portion  353  and may be in contact with the top surface of the substrate  361 . Thus, the top surfaces of the LED mounting portion  361   a  and the substrate protrusion  361   b  may be restricted by being pressed from the side ends. 
     In detail, the side support portion  356  may extend laterally (the right side in  FIG.  20   ) from one side of the protrusion guide  357 . For example, the side support portion  356  may be disposed at a height corresponding to the lower end of the upper support portion  358 . For example, the side support portion  356  may be disposed at a height corresponding to the lower end of the upper support portion  358 . 
     The side support portion  356  may restrict the left end of the substrate  361  and may include a first support portion (or first support surface)  356   a  restricting the side end of the LED mounting portion  361   a  and a second support portion (or second support surface)  356   b  restricting the side end of the substrate protrusion  361   b.    
     The first support portion  356   a  may be in contact with the top surface of the LED mounting portion  361   a  and may extend from the left end to the right side of the LED mounting portion  361   a . Here, the first support portion  356   a  may protrude to a position that does interfere with the first LED  362 . 
     In addition, the second support portion  356   b  may be in contact with the top surface of the substrate protrusion and may extend from the left end to the right side of the substrate protrusion  361   b . Here, the second support portion  356   b  may protrude to a position that does not interfere with the soldering portion  364  and may protrude less than the first support portion  356   a.    
     Thus, the second support portion  356   b  may have a structure, in which the side ends of the substrate  361  and the substrate protrusion  361   b  are restricted by the side support portion  356 , but does not interfere with the light irradiation of the LED  362  and the connection of the wires  369   a ,  369   b , and  369   c  of the substrate protrusion  361   b . As described above, the substrate protrusion  361   b  may be maintained in the firmly mounted state by the lower support portion  359 , the upper support portion  358 , and the side support portion  356 , and the movement of the substrate  361  may be prevented to prevent the wire  369  from being disconnected from the substrate  361 . 
     Hereinafter, the operations of the refrigerator  1  and the panel assembly  30  having the above structures will be described in more detail with reference to the drawings.  FIG.  23    is a block diagram illustrating a flow of a control signal of the refrigerator. Also,  FIG.  24    is a cross-sectional view illustrating an emission state of the panel assembly. Also,  FIG.  25    is a view illustrating an example of adjusting colors of home appliances to which the panel assembly using a remote device is applied. 
     As illustrated in the drawing, an outer appearance of the home appliance according to an embodiment may be defined by the panel assembly  30 , and also, a color of the outer appearance of the home appliance may be changed to a color that is set by the user according to the operation of the lighting device  36 . The panel assembly may be expressed in various colors by light irradiated from the rear side, and thus the panel assembly  30  or the panel  31  may be referred to as a screen. 
     The home appliance may be any one of a refrigerator  1 , an air conditioner  5 , a dishwasher  6 , a clothes manager  7 , a washing machine  8 , or a cooking appliance  9 , each of which has a front surface of which a color of an outer appearance is freely changed by applying the same structure as the panel assembly  30  according to an embodiment. 
     For example, in the above-described embodiment and in the refrigerator  1 , the panel assembly  30  may be provided on a front side of the door  20  that opens and closes the cabinet  10 . In addition, the panel assembly  30  may shine in a set color by user setting, and the outer appearance of the front surface of the refrigerator  1  may be changed in color. 
     As another example, an indoor unit of the air conditioner  5  may have a space in which a heat exchange device and a fan are provided inside a case  51  (or cabinet) that defines an outer appearance of the indoor unit. In addition, a front surface of the case  51  may be defined by a panel assembly  511 . The panel assembly  511  may have the same structure as the panel assembly  30  of the refrigerator  1  to emit light. Thus, the panel assembly  511  may shine in a set color by the user setting, and a color of the outer appearance of the front surface of the indoor unit of the air conditioner  5  may be changed into the set color. 
     As another example, in the dishwasher  6 , a space for washing dishes may be defined inside a case  61  or a cabinet that defines an outer appearance of the dishwasher  6 . In addition, the front surface of the case  61  may be opened and closed by the door  62 , and the front surface of the door  62  may be defined by the panel assembly  621 . The panel assembly  621  may have the same structure as the panel assembly  30  of the refrigerator  1  to emit light. Thus, the panel assembly  621  may shine in a set color by the user setting, and a color of the outer appearance of the front surface of the dishwasher  6  may be changed into the set color. 
     As another example, in the clothes manager  7 , a space for storing clothes may be defined inside a case  71  or a cabinet that defines an outer appearance of the clothes manager  7 . In addition, the front surface of the case  71  may be opened and closed by the door  72 , and the front surface of the door  72  may be defined by the panel assembly  721 . The panel assembly  721  may have the same structure as the panel assembly  30  of the refrigerator  1  to emit light. Thus, the panel assembly  721  may shine in a set color by the user setting, and a color of the outer appearance of the front surface of the clothes manager  7  may be changed into the set color. 
     As another example, in the washing machine  8  or a dryer, a space for washing or drying may be defined inside a case  81  (or cabinet) that defines an outer appearance of the washing machine  8 . In addition, a front of the case  81  may be opened and closed by the door  82 . The front surface of the case  81  may be defined by a panel assembly  811 . The panel assembly  811  may have the same structure as the panel assembly  30  of the refrigerator  1  to emit light. Thus, the panel assembly  30  may shine in a set color by the user setting, and a color of the outer appearance of the front surface of the washing machine  8  or the dryer of the air conditioner  8  may be changed into the set color. 
     As another example, in the cooking appliance  9 , a space for cooking food may be defined inside a case  91  or a cabinet that defines an outer appearance of the cooking appliance. In addition, the front surface of the case  91  may be opened and closed by the door  92 , and the front surface of the door  92  may be defined by the panel assembly  921 . The panel assembly  921  may have the same structure as the panel assembly  30  of the refrigerator  1  to emit light. Thus, the panel assembly  921  may shine in a set color by the user setting, and a color of the outer appearance of the front surface of the cooking appliance  9  may be changed into the set color. 
     A process of changing the color of the panel assembly  30  will be described below. In a state in which the lighting device  36  is turned off, a color of the outer appearance of the front surface may be expressed by the color of the panel  31 . A color displayed on the panel  31  in the state in which the lighting device  36  is turned off may be referred to as a first color. 
     When the lighting device  36  operates, the color of the panel  31  may be changed according to a color of light irradiated from the lighting device  36 , and a color of the outer appearance of the front surface of the door  20  may be expressed in the selected color. In this case, the color of the light irradiated from the lighting device  36  may be referred to as a second color, and the color of the panel that is changed when the lighting device  36  is turned on may be referred to as a third color. 
     The second color may be different from the third color, and the third color of the panel  31  selected by the user may be implemented by the second color corrected in consideration of the first color of the panel  31  itself. That is, the light having the second color irradiated from the lighting device  36  may be determined by the controller  13  in consideration of the first color of the panel  31  itself, and the light having the second color may pass through the panel having the first color, and thus, the panel  31  may be finally expressed in the third color that is selected by the user. 
     In detail, the color of the panel  31  may be determined by a selective operation of the lighting device  36 . For example, the lighting device  36  may also be manipulated and set through a remote device  2  spaced apart from the refrigerator  1 . The refrigerator  1  may communicate with the remote device  2  through a communicator  17  connected to a controller  13 , and the user may manipulate an operation of the lighting device  36  through the remote device  2 . 
     The communicator  17  may communicate with the remote device  2  using various methods. For example, the communication unit  17  may have a structure capable of communicating in at least one of wired, wireless and short-range communication (Bluetooth, Wi-Fi, Zigbee, NFC, etc.). The remote device  2  may be various devices that are capable of communicating, such as a dedicated terminal, a mobile phone, a tablet, a portable PC, a desktop PC, a remote control, or a Bluetooth speaker. 
     The user may manipulate and set the overall operation state of the lighting device  36 , such as an operation time and an operation condition of the lighting device  36  and emission color through manipulation of the remote device  2 . For example, the lighting device  36  may be simply manipulated and set through an application or a dedicated program installed in a portable phone of the user. 
     The selection of the color change of the panel  31  through the remote device  2  will be described with reference to  FIG.  25   . The user may select a desired color of the panel  31  through a screen  2   a  of the remote device  2  such as a mobile phone or a terminal. 
     When the user manipulates the remote device  2 , the remote device first outputs a menu screen  2   b  and manipulates a panel color change menu  2   b   1  through the menu screen  2   b . When the user selects the panel color change menu  2   b   1 , the remote device  2  may output a color selection screen  2   c  from the menu screen  2   b , and the user may select a position of the panel  31  to be changed and the color of the panel  31  to be changed on the color selection screen. 
     In detail, a panel position selection menu  2   c   1  may be displayed on the color selection screen  2   c  to select the panel  31  mounted on the door  20  at a desired position among the plurality of doors  20 . In addition, the panel  31  of the door  20  selected by the user may be displayed on the panel position selection menu  2   c   1 . 
     After selecting the desired position of the panel  31 , the user may select and input color selection menus  2   c   2  and  2   c   3  displayed on the color selection screen  2   c . For example, in the color selection menus  2   c   2  and  2   c   3 , all of the colors to be displayed by the panel  31  may be displayed in the form of a color picker capable of confirming and extracting a color code. The color selection menus  2   c   2  and  2   c   3  may be referred to as a palette because combinations and selection of various colors are possible. 
     The color selection menus  2   c   2  and  2   c   3  may include a circular first selection portion  2   c   2  and a bar-shaped second selection portion  2   c   3 . The first selection portion  2   c   2  may select a color, and the second selection portion  2   c   3  may select an intensity of the selected color. The color selection menus  2   c   2  and  2   c   3  may include either one of the first selection portion  2   c   2  or the second selection portion  2   c   3 . 
     As described above, the user may select the color of the panel  31 , i.e., the third color, from among various colors through the color selection menus  2   c   2  and  2   c   3 . Of course, the color selection menus  2   c   2  and  2   c   3  may be configured to be capable of being input in the form of letters, codes, and numbers. In addition, according to the user&#39;s selection of the third color, the controller  13  may control the lighting device  36  to be turned on in the second color so that the panel  31  is displayed in the third color. 
     In addition, the user may input a color through a manipulation portion  14  provided in the refrigerator  1  without using the remote device  2 . In addition, each of the refrigerator  1  and the remote device  2  may be connected to a server in a network state, and thus, the color of the panel  31  of the refrigerator  1  may be input through the server  3 . 
     The operation of the lighting device  36  may be performed by the manipulation of the manipulation portion  14  by the user. The manipulation portion  14  may be disposed at one side of the refrigerator  1 , and for example, may be disposed at one side of the cabinet  10 . As necessary, the manipulation portion  14  may be provided in the door  20 , or the manipulation may be input by touching and manipulating the panel  31  such as knock. That is, the user may directly manipulate the manipulation portion  14  to set an operation of the lighting device  36  and may turn on or off the lighting device  36 . 
     In addition, the lighting device  36  may also operate by a sensor. The sensor may be, for example, a user detection sensor  151  for detecting proximity of the user. For example, the user detection sensor  151  may use various devices for detecting user approaching near the refrigerator, such as an infrared sensor, an ultrasonic sensor, or a laser sensor. 
     The sensors  15  may be disposed at various positions for detecting proximity of the user, such as one side of the cabinet or one side of the door  20 , and may be disposed at various positions for detecting proximity of the user. A plurality of sensors may be disposed at different positions. 
     Thus, when the user approaches the refrigerator  1  by a set distance for use of the refrigerator  1 , the user detection sensor  151  may detect this and may transfer a signal to the controller  13  to turn on the lighting device  36 . When the user moves away from the refrigerator  1 , the user detection sensor  151  may detect this and may transfer a signal to the controller  13  to turn off the lighting device  35 . 
     In detail, when the user detection sensor  151  detects that the user is very close to the refrigerator  1 , the lighting device  36  may be turned off or the brightness may be gradually dimmed to prevent glare of the user. When the user moves away from the refrigerator  1  again, the lighting device  35  may be turned on again or may return to an original brightness. 
     The sensor may be an illumination sensor  152 . The illumination sensor  152  may detect illumination of an indoor space and may be disposed at the same position as a position at which the user detection sensor  151  is disposed. 
     The lighting device  36  may be operated according to a detected illumination of the illumination sensor  152 . For example, when the detected illumination of the illumination sensor  152  is equal to or less than a set illumination and the lighting device  36  is dimmed, the controller  13  may turn on the lighting device  36 , and when the detected illumination of the illumination sensor  152  is equal to or greater than the set illumination and the lighting device  36  becomes brighter, the controller  13  may turn off the lighting device  36 . 
     The sensor may include both the illumination sensor  152  and the user detection sensor  151 , and the illumination sensor  152  and the user detection sensor  151  may be operated in a complex way to cause the controller  13  to turn off the lighting device  36 . 
     The controller  13  may be connected to a microphone  18 . Thus, the LED  362  may shine with set color according to a voice signal received from the microphone  18 , and an input state of the voice signal or a setting state of a function may also be displayed through the front color of the door  20 . For example, when receiving a temperature control signal of the user through the microphone  18 , the controller  13  may adjust a set temperature inside the refrigerator, and may operate the lighting device  36  to change color of the front surface of the door  20  to color corresponding to the corresponding temperature. 
     The lighting device  36  may be turned off at a time set by a timer  16 . That is, the lighting device  36  may be turned on according to a time when the user is mainly active and may be maintained off outside the set time range. The lighting device  36  may be turned off during the day and on during night irrespective of actual illumination. Irrespective of an operation state of the refrigerator  1 , the brightness and color of the front surface of the door  20  may be adjusted only according to user settings. 
     The lighting device  36  may include the state in which brightness is adjusted in addition to an on state and an off state. That is, the controller  13  may control the output of the light irradiated through the lighting device  36  to change brightness of the panel  31 . In addition, the operation state of the refrigerator  1  may be indicated through the brightness of the panel  31 . 
     The operation state of the lighting device  36  operating by the controller  13  is now described. As shown in  FIG.  24   , when the lighting device  36  is turned on according to an instruction of the controller  13 , light emitted from the LED  362  may be emitted toward the lower end of the light guide plate  33 . In this case, the light emitted from the LED  362  may be irradiated with the second color selected by the controller  13 . That is, the LED  362  may be an RGB LED and irradiates the light having the second color corrected by the controller  13  so that the surface of the panel  31  may shine in the third color selected by the user. 
     The light incident through the lower end of the light guide plate  33  may be diffused and reflected along the light guide plate  33  and then may move along the light guide plate  33 . In this case, the light guided by the light guide plate  33  may be reflected forward by the reflective layer  331  to pass through the panel  31  so as to be transmitted to the outside. Light directed forward through the light guide plate  33  may pass through the transmission member  32  to illuminate the panel  31 , and the front surface of the door  20  may shine with a set brightness or color. Here, the light guide plate  33  may irradiate light having sufficient brightness from the entire surface forward by the LED  362  disposed at each of both ends of an LED mounting portion  361   a , and thus, the whole including both the ends of the panel  31  may shine with uniform brightness. 
     Hereinafter, a change in outer appearance of the front surface of the door  20  according to the operation of the lighting device  36  will be described with reference to the drawings.  FIG.  26    is a front view illustrating an outer appearance of a front surface of the refrigerator that is in a state in which the lighting device is turned off. Also,  FIG.  27    is a front view illustrating an outer appearance of a front surface of the refrigerator that is in a state in which the lighting device is turned on. Also,  FIG.  28    is a front view illustrating an outer appearance of the front surface of the refrigerator in which the lighting device is changed in color. Also,  FIG.  29    is a front view illustrating an outer appearance of the front surface of the refrigerator in a state in which a portion of a plurality of doors emits light. Also,  FIG.  30    is a front view illustrating the outer appearance of the front surface of the refrigerator in a state in which each of a refrigerating compartment door and a freezing compartment door of the doors emits light. For example, in the state in which the lighting device  36  is turned off, as illustrated in  FIG.  26   , a front surface of the door  20  may not shine, and an original color of the panel assembly  30  may appear. 
     The panel assembly  30  may have a structure that is separable from the door body  40 , and thus, the user may select a color of the first panel  31  by mounting the panel assembly  30  having a desired color. Of course, if necessary, the user may change the color of the panel  31  when the lighting device  36  is turned off by exchanging the panel assembly  30  itself. The color of the front surface of the door  20  may be seen as the color of the panel  31 , and the texture and pattern provided on the panel  31  may be seen. In this case, the color of the panel  31  may be color with brightness greater than 0 and may be provided in a color other than black. 
     Thus, the front surface of the door  20  may be seen with the first color that is the color of the panel  31 . In this case, components inside the panel assembly  30  may be seen through the panel  31  and may not be seen to the outside by the color of the panel  31 . In this state, the lighting device  36  may be turned on, and when the lighting device  36  is turned on, the front surface of the door  20  may shine with a color set by the controller  13 . 
     For example, as illustrated in  FIG.  27   , the controller  13  may control the front surface of the door  20  to shine with a second color different from the first color, and the lighting device  36  may cause the LED  362  to shine with the second color according to the control of the controller  13 . Here, the third color may be selected by the user, and the color of the panel  31  may be selected by the manipulation of the remote device  2  or the manipulation of the manipulation portion  14 . 
     When the LED  362  shines in the second color, the light reflected by the light guide plate  33  may pass through the front of the panel  31 , and the front of the door  20 , that is, the panel  31  may be expressed in the third color. In the state in which the outer appearance of the front surface of the refrigerator  1  shines with the third color, when the controller  13  instructs change in color of the front surface of the refrigerator  1 , the front surface of the panel  31  may shine with a color that is reset by the controller  13 . 
     For example, as illustrated in  FIG.  28   , the controller  13  may instruct change in color of the front surface of the panel  31  to shine with the second color different from the first color, and the lighting device  36  may irradiate light having a color different from that of the LED  362  according to the instruction of the controller  13 . 
     When the LED  362  shines in the different color, the light reflected by the light guide plate  33  may pass through the light through the panel  31 , and the front of the door  20 , that is, the panel  31  may be expressed in the fourth color. Some of the plurality of doors  20  forming the outer appearance of the front surface of the refrigerator  1  may emit light, or the panels  31  constituting the plurality of doors  20  may independently emit light to define the outer appearance of the front surface of the refrigerator  1  with the set color. 
     For example, as illustrated in  FIG.  29   , the refrigerator  1  may operate so that some doors  20  of the plurality of doors  20  shine or shine with a specific color. That is, all the lighting devices  36  provided in the doors  20  may not operate, but instead, only some  201   a  of all the doors  20  may shine. For example, any one door  201   a  of the refrigerating compartment door  201  may shine. That is, the left refrigerating compartment door  201   a  among the left refrigerating compartment door  201   a  and the right refrigerating compartment door  201   b  may shine. Of course, the door  20  may be any one of the freezing compartment doors  202 . 
     As necessary, the left refrigerating compartment door  201   a  and the right refrigerating compartment door  201   b  may shine with a different color. At least two of the doors  20  may be sequentially changed in color and at least two of the doors  20  may be sequentially turned on or off. 
     The refrigerating compartment door  20  or the freezing compartment door  20  among the doors may be controlled to shine with the different color. For example, as illustrated in  FIG.  30   , the controller  13  may control the lighting device  36  so that one pair of refrigerating compartment doors  201  are expressed in the first color. The controller  13  may control the lighting device  36  so that one pair of the refrigerating compartment doors  201  are expressed in a different color. 
     That is, the refrigerating compartment door  201  and the freezing compartment door  202  may be distinguished therebetween with colors, and according to a temperature change inside the refrigerator, the colors of the refrigerating compartment door  201  and the freezing compartment door  202  may also be changed. Thus, through the front color of the door  20 , the user may intuitively recognize an operation state of each storage space as well as may distinguish between the refrigeration compartment and the freezing compartment. 
     There may be various other embodiments other than the aforementioned embodiments. According to another embodiment of the present disclosure, the storage space may be partitioned into right and left sides, and the door includes a refrigerating compartment door and a freezing compartment door at right and left sides. Another embodiment of the present disclosure may have the same structure as the aforementioned embodiment except for arrangement of a storage space and a door, and thus the same components as in the aforementioned embodiment use the same reference numeral, and a detailed description thereof may be omitted. 
     Hereinafter, another embodiment of the present disclosure will be described with reference drawings.  FIG.  31    is a perspective view of a refrigerator according to another embodiment. Also,  FIG.  32    is a front view of a front appearance of a refrigerator in the state in which a lighting device of the refrigerator is turned on. 
     As shown in the drawings, an outer appearance of a refrigerator  1 ′ according to another embodiment of the present disclosure may be defined by the cabinet  10  in which a storage space is defined, and the door  20  for opening and closing an open front surface of the cabinet  10 . The cabinet  10  may be divided into right and left sides. Although not shown, a left space of the cabinet  10  may be configured by a freezing compartment, and a right space of the cabinet  10  may be configured by a refrigerating compartment. 
     The door  20  may include a freezing compartment door  203  for opening and closing the freezing compartment and a refrigerating compartment door  204  for opening and closing the refrigerating compartment. The freezing compartment door  203  and the refrigerating compartment door  204  may be arranged in parallel to each other at right and left sides, and the refrigerating compartment and the freezing compartment may be configured to be opened and closed through rotation. 
     In the state in which the door  20  is closed, an outer appearance of the front surface of the refrigerator  1 ′ may be defined by the door  20 . The door  20  may include the door body  40  and the panel assembly  30 . A detailed structure of the door  20  may be the same as the aforementioned embodiment and may be different therefrom except for the size and arrangement thereof, and thus a detailed description or illustration thereof may be omitted, and unexplained reference numerals in the drawings may refer to the aforementioned embodiment. 
     Color of the panel assembly  30  may be determined by the panel  31  configuring the front surface of the panel assembly  30 . Thus, in the state in which the lighting device is turned off, the outer appearance of the front surface of the refrigerator  1 ′ may be defined by color of the panel itself. 
     When the lighting device  36  is turned on under control of the controller  13 , light emitted by the lighting device  36  may be seen through the panel  31  to change the panel  31  in color or brightness. In this case, under control of the controller  13 , the lighting device  36  may emit light with various colors, and the panel  31  may be changed to various colors to shine. That is, in the state in which the door  20  is maintained to be assembled and mounted, color or brightness of the outer appearance of the front surface of the refrigerator  1 ′ may be changed resulting in change in the outer appearance of the front surface. 
     As necessary, the refrigerating compartment door  204  and the freezing compartment door  203  may shine with different colors, and the refrigerating compartment door  204  and the freezing compartment door  203  may shine with color selected to harmonize with surrounding furniture or an installation environment to harmonize with a surrounding environment. When an installation or usage environment or a usage condition is change, the outer appearance of the front surface of the refrigerator  1 ′ may be freely changed according to the change. 
     The home appliance according to the proposed embodiments may have the following effects. According to the embodiments, the color of the light irradiated from the lighting device may be adjusted by the user&#39;s manipulation, and thus, the color of the panel defining the front surface of the door may be changed to the selected color. Thus, there may be the advantage in that the color of the front surface of the door is changed to the desired color without replacing the panel. Particularly, there may be the advantage in that the user is capable of quickly and easily changing the color of the outer appearance to the desired color at any time desired by the user in the state in which the panel is mounted, thereby improving the use convenience. 
     In addition, the state, the operation information, the information of the surrounding environment, and the like of the home appliance may be displayed by changing the color of the panel, and thus, the user may intuitively recognize the information to further improve the use convenience. In addition, the lighting device that irradiates light to the light guide plate may include the substrate and the plurality of LEDs, and the substrate may extend along the lower end of the light guide plate. In addition, the substrate may include the LED mounting portion on which the LED is mounted and the substrate protrusion protruding backward from one end of the LED mounting portion so that the wire is connected. 
     That is, the LED mounted on the substrate may be disposed along the LED mounting portion without the interference with the connection portion of the wire and may be sufficiently densely disposed up to both the ends of the substrate. Thus, the sufficient amount of light may be irradiated to the light guide plate, and also, the light may be effectively irradiated to both the ends of the light guide plate to prevent both the ends of the panel from being darkened due to the insufficient amount of light and allow the entire panel to shine with the uniform brightness. 
     Particularly, only the plurality of the LEDs may be disposed on the top surface of the LED mounting portion, and the elements for the operation of the LED may be disposed on the bottom surface of the LED mounting portion, and thus, the LEDs may be densely disposed on the substrate so that the panel shines with the sufficient amount of light. 
     In addition, the substrate protrusion to which the wire is connected may be exposed to the rear side of the panel assembly to reduce the space in which the lighting device is mounted by the protruding distance of the substrate protrusion, thereby reducing the thickness of the panel assembly. 
     The panel assembly may have the slim thickness to prevent the home appliance from increasing in thickness. For example, the overall thickness of the refrigerator door may be minimized to prevent the refrigerator door from being deteriorated in insulating performance. 
     In addition, since the substrate protrusion has the structure exposed through the rear surface of the panel assembly, the arrangement and connection of the wire may be facilitated. Particularly, the substrate protrusion and the opening of the back cover, through which the substrate protrusion is exposed, may be disposed on the one end that is away from the rotation shaft of the door to prevent the interference with the lower hinge device for the rotation of the door so as to facilitate the connection and arrangement of the wire. 
     In addition, the panel assembly may be detachably provided on the front side of the door body of the door, and the wire may be connected and disposed between the rear side of the panel assembly and the front side of the door body. Thus, there may be the advantage in that the panel assembly is detachably attached to facilitate the maintenance of the panel assembly. 
     In addition, the mounting position of the substrate may be fixed inside the panel assembly. Particularly, although the repeated impact is applied to the structure of the door that is repeatedly opened and closed, the installation position of the substrate may be maintained due to the stable fixing structure of the substrate by the plurality of supports. In addition, there may be the advantage in that the provision of the designed amount of light to the light guide plate may be secured due to the maintenance of the installation position of the substrate. 
     Particularly, the support portion may support the substrate protrusion to which the wire is connected or the substrate adjacent to the substrate protrusion, and the substrate protrusion may be intensively fixed by at least one of the upper support portion, the lower support portion, and the side support portion. Therefore, even if the wire is connected to or disconnected from the substrate protrusion during the assembly or maintenance of the panel assembly, the initial mounting position of the substrate protrusion may be maintained. 
     In addition, the substrate may be restricted in the vertical direction, the forward and backward direction, and the left and right direction by only inserting and mounting the substrate inside the lower bracket without detaching the coupling member such as the separate screw so as to be maintained in the stable mounting state. 
     Embodiments provide a home appliance in which a thickness of a panel assembly capable of changing a color of a panel is minimized. Embodiments also provide a home appliance in which an entire front surface of a panel assembly shines with uniform brightness. Embodiments also provide a home appliance in which power connection of a lighting device inside a panel assembly is easy. Embodiments also provide a home appliance in which a substrate of which a portion is exposed to the outside of a panel assembly is firmly fixed. Embodiments also provide a home appliance in which a lighting device is easily maintained and repaired. 
     In one embodiment, a home appliance includes: a cabinet in which a storage space is defined; and a door including a door body configured to open and close the storage space and a panel assembly mounted on a front surface of the door body, wherein the panel assembly includes: a panel which is configured to define an outer appearance of a front surface of the door and through which light is transmitted; a light guide plate provided behind the panel to guide the light toward the panel; a lighting device including a plurality of LEDs configured to irradiate light having a set color toward the light guide plate and a substrate on which the LEDs are mounted; and a bracket on which the lighting device is mounted, wherein a substrate protrusion which protrudes toward a front surface of the door body and to which a wire is connected is disposed on the substrate, and the bracket includes at least one or more support portions configured to support the substrate protrusion. 
     The substrate may include an LED mounting portion which is provided at a position facing an end of the light guide plate and on which the plurality of LEDs are continuously disposed, and the substrate protrusion may protrude from the LED mounting portion to pass through a rear surface of the panel assembly. The support portion may be configured to support the LED mounting portion and the substrate protrusion together. 
     The support portion may be configured to: extend from a lower side of the substrate so as to pass through the LED mounting portion; and support a bottom surface of the LED mounting portion and a side end of the substrate protrusion. The support portion may include a lower support portion which protrudes to support the substrate at a lower side and by which the substrate protrusion is spaced apart from a bottom of the bracket. 
     The lower support portion may include: a support portion groove recessed so that the LED mounting portion is inserted so as to restrict movement of the substrate in a front and rear direction; and a support portion protrusion protruding to support a side end of the substrate protrusion so as to restrict movement of the substrate in a left and right direction. The lower support portion may be configured to restrict the substrate that is in contact with a stepped portion between the LED mounting portion and the substrate protrusion. 
     The support portion may further include an upper support portion extending downward from an upper side of the lower support portion and in contact with a top surface of the substrate to restrict vertical movement of the substrate. The support portion may include an upper support portion extending downward from an upper side of the substrate to restrict a top surface of the substrate. 
     The upper support portion may include: a vertical extension portion extending downward toward the top surface of the substrate; and a horizontal extension portion bent from a lower end of the vertical extension portion to extend in a state of being in contact with the top surface of the substrate. The vertical extension portion may extend downward from an area corresponding to the substrate protrusion, and the horizontal extension portion may extend up to an area of the LED mounting portion. 
     The horizontal extension portion may pass between the LEDs that are continuously disposed. A protrusion guide extending backward to accommodate the substrate protrusion may be disposed on a rear surface of the bracket, wherein the protrusion guide may protrude backward to pass through a rear surface of the panel assembly. 
     The support portion may include: a lower support portion protruding upward from one side of the protrusion portion guide to allow the substrate protrusion to be spaced apart from a bottom surface of the protrusion guide; and a side support portion protruding from the other side of the protrusion guide toward the lower support portion to restrict a side end of the substrate protrusion. 
     The side support portion may include: a first support portion extending along a top surface of the LED mounting portion to restrict the LED mounting portion; and a second support portion extending along a top surface of the substrate protrusion to restrict the substrate protrusion, wherein the first support portion may further protrude than the second support portion. 
     A plurality of soldering portions connected to the wire may be disposed on the substrate protrusion, wherein the plurality of soldering portion are disposed top and bottom surfaces of the substrate, respectively, the LED may be mounted on a top surface of the LED mounting portion, and elements except for the LED may be mounted on a bottom surface of the LED mounting portion. 
     The bracket may include: a bracket front surface portion configured to define a front surface of the bracket and extend more upward than the LED; a bracket bottom surface portion which extends backward from a lower end of the bracket front surface and on which the lighting device is mounted; and a light guide plate support portion protruding backward from the front surface portion to support a lower end of the light guide plate, wherein the light guide plate support portion may extend to pass between the plurality of LEDs so as to restrict a top surface of the substrate, and the support portion may protrude upward from the bracket bottom surface portion to restrict the substrate at a lower side. 
     The panel assembly may further include a transmission member which is made of a material through which light is transmittable and on which the panel and the light guide plate are mounted, wherein the transmission member may include: a front surface portion configured to partition the panel and the light guide plate from each other and having a front surface on which the panel is mounted; and a side surface portion protruding backward from both left and right ends of the front surface portion to restrict both ends of the light guide plate. The side surface portion may have opened upper and lower ends, and the bracket may be inserted and mounted in the opened end of the side surface portion. 
     The panel assembly may include: an upper bracket inserted into the upper end of the side surface portion; and a back cover provided behind the transmission member and configured to connect the upper bracket to the bracket inserted into the lower end of the side surface portion so as to define a rear surface of the panel assembly, wherein a cover opening through which the substrate protrusion is exposed may be defined in the back cover. 
     In another embodiment, a refrigerator includes: a cabinet in which a storage space is defined; and a door configured to open and close the storage space, wherein the door includes: a door body rotatably mounted on the cabinet; and a panel assembly mounted on a front surface of the door body, wherein the panel assembly includes: a panel which is configured to define an outer appearance of a front surface of the door and through which light is transmitted; a light guide plate provided behind the panel to guide the light toward the panel; a lighting device including a plurality of LEDs configured to irradiate light having a set color toward the light guide plate and a substrate on which the LEDs are mounted to change a display color of the panel; and a bracket on which the lighting device is mounted, wherein a substrate protrusion which protrudes toward a front surface of the door body and to which a wire is connected is disposed on the substrate, and the bracket includes at least one or more support portions configured to support the substrate protrusion. 
     In further another embodiment, a panel assembly for a home appliance includes: a panel which is configured to define an outer appearance of a front surface of the door and through which light is transmitted; a light guide plate provided behind the panel to guide the light toward the panel; a lighting device including a plurality of LEDs configured to irradiate light having a set color toward the light guide plate and a substrate on which the LEDs are mounted to change a display color of the panel; and a bracket on which the lighting device is mounted, wherein a substrate protrusion which protrudes to pass through a rear surface of the panel assembly and to which a wire is connected is disposed on the substrate, and the bracket includes at least one or more support portions configured to support the substrate protrusion. 
     The details of one or more embodiments are set forth in the accompanying drawings and the description below. Other features will be apparent from the description and drawings, and from the claims. 
     Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art. 
     It will be understood that when an element or layer is referred to as being “on” another element or layer, the element or layer can be directly on another element or layer or intervening elements or layers. In contrast, when an element is referred to as being “directly on” another element or layer, there are no intervening elements or layers present. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. 
     It will be understood that, although the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Thus, a first element, component, region, layer or section could be termed a second element, component, region, layer or section without departing from the teachings of the present invention. 
     Spatially relative terms, such as “lower”, “upper” and the like, may be used herein for ease of description to describe the relationship of one element or feature to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “lower” relative to other elements or features would then be oriented “upper” relative to the other elements or features. Thus, the exemplary term “lower” can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. 
     The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     Embodiments of the disclosure are described herein with reference to cross-section illustrations that are schematic illustrations of idealized embodiments (and intermediate structures) of the disclosure. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the disclosure should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. 
     Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. 
     Any reference in this specification to “one embodiment,” “an embodiment,” “example embodiment,” etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments. 
     Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.