Patent Publication Number: US-8981269-B2

Title: Cooker

Description:
TECHNICAL FIELD 
     The present disclosure relates to a cooker, and more particularly, to a cooker having a keep warm function. 
     BACKGROUND ART 
     Cookers are home appliances that cook foods using gas or electricity. 
     Cookers putting on the market in recent have a keep warm function for keeping foods ward. The keep warm function may be executed after foods are cooked or irrelevant to the cooking of foods. 
     DISCLOSURE 
     Technical Problem 
     However, a cooker having a related art keep warm function has limitations as follows. 
     In a related art cooker, a user does not confirm a state within a cooking chamber such as cooking or keeping warm of foods. That is, the user does not determine whether the foods within the cooking chamber is cooked or kept warm by a heating source. 
     Also, an illumination source for illuminating the inside of a cooking chamber in which foods are cooked or keep warm and a heating source for keeping foods warm are separately provided. Thus, there is a limitation that the number of parts constituting a product is increased. 
     Technical Solution 
     Embodiments provide a cooker capable of easily confirming whether a food is kept warm. 
     Embodiments also provide a cooker capable of keeping a food warm through a further simple structure. 
     In one embodiment, a cooker includes: at least one heating source providing heat supplied into a cooking chamber; an illumination device illuminating the inside of the cooking chamber; a controller controlling the heating source to perform a cooking mode for cooking a food in the cooking chamber or a keep-warm mode for keeping the food warm in the cooking chamber and the illumination device to emit light having colors different from each other into the cooking chamber according to the cooking mode or the keep-warm mode. 
     In another embodiment, a cooker includes: at least one heating source performing all or at least keep-warm mode of a cooking mode for cooking a food in a cooking chamber and the keep-warm mode for keeping the food warm in the cooking chamber; a first illumination source emitting light for illuminating the inside of the cooking chamber in the cooking mode; a second illumination source emitting light for illuminating the inside of the cooking chamber in the cooking mode; and a light-converting member converting a color of the light emitted from one of the first and second illumination sources to transmit the light having the converted color into the inside of the cooking chamber. 
     In further another embodiment, a cooker includes: a cavity having a cooking chamber eccentrically disposed on a front surface thereof; a hood exhaust passage disposed on an upper portion of the cavity; a vent fan assembly generating an airflow flowing into the hood exhaust passage; a heating source disposed at a side of a top surface of the cavity except the hood exhaust passage, the heating source providing heat for keeping a food warm in at least the cooking chamber; and an illumination device disposed above the hood exhaust passage, the illumination device emitting light having colors different from each other according to whether it is in a cooking mode in which the food is cooked in the cooking chamber or a keep-warm mode in which the food is kept warm in the cooking chamber. 
     *10In still further another embodiment, a cooker includes: a cavity having a cooking chamber in which a food is cooked or kept warm; an air duct disposed on a top surface of the cavity, the air duct having a hood exhaust passage; a heating source disposed on a top surface of the air duct except the hood exhaust passage, the heating source providing heat for cooking the food or keeping the food warm in the cooking chamber; and an illumination device disposed above the hood exhaust passage, the illumination device illuminating the inside of the cooking chamber. 
     Advantageous Effects 
     According to the embodiments, the user may easily confirm whether the food is cooked or kept warm. In addition, the food may be kept warm through the further simple structure. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIG. 1  is a perspective view of a cooker according to a first embodiment. 
         FIG. 2  is a block diagram of the cooker according to the first embodiment. 
         FIG. 3  is a block diagram of a cooker according to a second embodiment. 
         FIG. 4  is a block diagram of a cooker according to a third embodiment. 
         FIG. 5  is a perspective view of a state in which a cooker is installed in a kitchen according to a fourth embodiment. 
         FIG. 6  is an exploded perspective view of the cooker according to the fourth embodiment. 
         FIG. 7  is an exploded perspective view illustrating a main part of the cooker according to a fourth embodiment. 
     
    
    
     BEST MODE 
     Hereinafter, a configuration of a cooker according to a first embodiment will be described in detail with reference to accompanying drawings. 
       FIG. 1  is a perspective view of a cooker according to a first embodiment, and  FIG. 2  is a block diagram of the cooker according to the first embodiment. In the current embodiment, a cooker of cooking equipment will be described as example. 
     Referring to  FIG. 1 , a cooking chamber  3  is defined in a cooker main body  1 . The cooking chamber is a space for cooking a food or keeping a food warm. 
     The cooking chamber  3  is selectively opened or closed by a door  5 . The other end of the door  5  is installed pivotably on the main body  1  in front and rear directions, centered about one end thereof. 
     Also, a control panel  7  is disposed on a side of a front surface of the main body  1 . The control panel  7  receives a manipulation signal for operating the cooker and controls an operation of the cooker. 
     Referring to  FIG. 2 , a plurality of heating sources is disposed in the cooker. For example, the cooker may include a magnetron oscillating a microwave for cooking a food or keeping the food warm in the cooking chamber  3  and a heating source  11  such as a heater generating heat. The heating source  11  may include a heat source for cooking the food in the cooking chamber  3  and a heating source for keeping the food warm in the cooking chamber  3 . Here, the heating source for cooking the food is separated from the heating source for keeping the food warm. Alternatively, one heating source  11  may be provided to cook the food or keep the food warm in the cooking chamber  3 . 
     An illumination lamp  13  is disposed in the cooker. The illumination lamp  13  illuminates the inside of the cooking chamber  3  when the cooker is operated to cook the food or keep the food warm in the cooking chamber  3 . Here, the illumination lamp  13  is configured to emit light having at least two colors. This is done for a reason that the inside of the cooking chamber  3  is illuminated by light having colors different from each other according to the cooking or keeping warm of the food in the cooking chamber  3  to allow the user to distinguish whether the food within the cooking chamber  3  is cooked or kept warm. For example, the illumination lamp  13  may emit light having two colors such as yellow light and red light. 
     The control panel  7  includes a manipulation part  17 . The manipulation part  17  receives a manipulation signal for an operation of the cooker. Particularly, the manipulation part  17  receives the manipulation signal for cooking the food or keeping the food warm in the cooking chamber  3 . Here, the manipulation part  17  may receive the manipulation signal for keeping the food warm in a form that is actively selected by the user or a form that is not passively selected by the user. 
     The control panel  7  includes a controller  19 . The controller  19  controls an operation of the cooker, in particular, operations of the heating source  11  and the illumination lamp  13  according to the manipulation signal inputted into the manipulation part  17 . 
     In more detail, the controller  19  controls the operation of the heating source  11  according to whether the manipulation part  17  receives the manipulation signal for cooking the food in the cooking chamber or the manipulation signal for keeping the food warm. Here, when the food is not kept warm in the cooking chamber  3 , but is cooked in the cooking chamber  3 , the heating source is driven to high output under the control of the controller  19 . If the heating source is divided into a heating source for cooking the food in the cooking chamber  3  and a heating source for keeping the food warm in the cooking chamber  3 , the controller  19  controls the heating source for cooking the food or the heating source for keeping the food warm in the cooking chamber  3  to operate the heating source. 
     The controller  19  controls an operation of the illumination lamp  13  according to whether the manipulation part  17  receives the manipulation signal for cooking the food or the manipulation signal for keeping the food warm in the cooking chamber  3 . For example, when the manipulation part  17  receives the manipulation signal for cooking the food in the cooking chamber  3 , the controller  19  controls the illumination lamp  13  to emit the yellow light for illuminating the inside of the cooking chamber  3 . When the manipulation part  17  receives the manipulation signal for keeping the food warm in the cooking chamber  3 , the controller  19  controls the illumination lamp  13  to emit the red light for illuminating the inside of the cooking chamber  3 . 
     Hereinafter, an effect of the cooker according to the first embodiment will be described in detail. 
     First, the user inputs the manipulation signal for cooking the food into the manipulation part  17 . When the manipulation part  17  receives the manipulation signal for cooking the food, the controller  19  controls operations of the heating source  11  and the illumination lamp  13 . Thus, the heating source  11  is operated to perform a cooking mode in which the food within the cooking chamber  3  is cooked. Also, the illumination lamp  13  is operated to illuminate the inside of the cooking chamber  3 . At this time, the controller  19  controls the illumination lamp  13  to emit the yellow light. Thus, since the yellow light is emitted into the cooking chamber  3 , the user may know that the food is cooked in the cooking chamber  3 . 
     When the user inputs the manipulation signal for keeping the food warm into the manipulation part  17 , a keep-warm mode is performed. The input of the manipulation signal for starting the keep-warm mode may be performed at the same time with the input of the manipulation signal for starting the cooking mode or may be performed during the cooking mode. Also, the keep-warm mode may be started when the user does not actively input the manipulation signal in which the keep-warm mode is not started into the manipulation part  17 . 
     When the keep-warm mode is performed, the controller  19  controls the heating source  11  to keep the food warm in the cooking chamber  3 . Also, the controller  19  controls the illumination lamp  13  to emit the red light, thereby illuminating the inside of the cooking chamber  3 . 
     MODE FOR INVENTION 
     Hereinafter, a cooker according to a second embodiment will be described in detail with reference to accompanying drawings. 
       FIG. 3  is a block diagram of a cooker according to a second embodiment. In the current embodiment, the same part as that of the first embodiment will be denoted in detail by the reference numerals of  FIG. 1 . 
     Referring to  FIG. 3 , in a cooker according to the second embodiment, a heating mode in which a food within a cooking chamber  3  is heated by a heating source  21  or a keep-warm mode in which the food is kept warm are performed. Also, the inside of the cooking chamber  3  is illuminated by first and second illumination lamps  23  and  25 . The first illumination lamp  23  illuminates the inside of the cooking chamber  3  in the heating mode. The second illumination lamp  25  illuminates the inside of the cooking chamber  3  in the keep-warm mode. The first and second illumination lamps  23  and  25  emit light having colors different from each other. For example, the first illumination lamp  23  may emit yellow light, and the second illumination lamp  25  may emit red light. However, the present invention is not limited to the colors of light of the first and second illumination lamps  23  and  25 . That is to say, if the first and second illumination lamps  23  and  25  emit light having colors different from each other, the first and second illumination lamps  23  and  25  may emit light having certain colors. 
     A manipulation part  27  constituting a control panel  7  receives various manipulation signals for an operation of the cooker including the cooking mode function or the keep-warm mode function. A controller  29  constituting the control panel  7  controls operations of the heating source  21  and the first and second illumination lamps  23  and  25  according to the manipulation signals inputted into the manipulation part  27 , i.e., the manipulation signals for the cooking mode or the keep-warm mode. 
     In more detail, when the manipulation part  27  receives the manipulation signal for the cooking mode, the controller  29  controls the first illumination lamp  23  to illuminate the inside of the cooking chamber  3 . When the manipulation part  27  receives the manipulation signal for the keep-warm mode, the controller  29  controls the second illumination lamp  25  to illuminate the inside of the cooking chamber  3 . 
     That is to say, in the above-described first embodiment, the controller controls one illumination lamp to emit light having colors different from each other into the cooking chamber according to whether it is in the cooking mode or the keep-warm mode. However, in the current embodiment, the controller  29  controls one of the first and second illumination lamps  23  and  25 , which respectively emit light having colors different from each other to emit light having colors different from each other into the cooking chamber  3  according to whether it is in the cooking mode or the keep-warm mode. 
     Also, the current embodiment, although the heating source  21  and the second illumination lamp  25  are provided as separate parts, it is not limited thereto. For example, a halogen lamp may be used as the heating source  21  and the second illumination lamp  25 . Thus, when the manipulation part  27  receives the manipulation signal for the keep-warm mode, the controller  29  controls an operation of the halogen lamp to keep the food warm in the cooking chamber  3 . However, since the halogen lamp emits red light during operation, red light is illuminated into the cooking chamber  3 , and simultaneously, the food is kept warm in the cooking chamber  3 . Thus, the keeping warm of the food and the illumination of the inside of the cooking chamber  3  may be performed by the halogen lamp. 
     Hereinafter, a cooker according to a third embodiment will be described in detail. 
       FIG. 4  is a block diagram of a cooker according to a third embodiment. In the current embodiment, the same part as that of the first embodiment will be denoted in detail by the reference numerals of  FIG. 1 . 
     Referring to  FIG. 4 , in the current embodiment, a heating source  31  for heating a food or keeping the food warm in a cooking chamber is operated. Also, first and second illumination lamps  33  and  35  and a color filter  36  are provided. The first and second illumination lamps  33  and  35  emit light having colors different from each other into the cooking chamber  3  according to whether the food within the cooking chamber  3  is heated, i.e., a heating mode is performed or the food within the cooking chamber  3  is kept warm, i.e., a keep-warm mode is performed. 
     In more detail, the first and second illumination lamps  33  and  35  emit light having the same color as each other. For example, the first and second illumination lamps  33  and  35  may emit yellow light. The color filter  36  absorbs a portion of the yellow light emitted from the second illumination lamp  35  to transmit only red light into the cooking chamber  3 . 
     Here, another embodiment of the first and second illumination lamps  33  and  35  and the color filter  36  may be applicable. For example, the first and second illumination lamps  33  and  35  emit the red light, and the color filter  36  may absorb a portion of the red light emitted from the first illumination lamp  33  to transmit only the yellow light into the cooking chamber  3 . 
     Configurations of a manipulation part  37  and a controller  39 , which constitute a control panel  7  are equal to those of the above-described first and second embodiments. That is, the manipulation part  37  receives a manipulation signal for the cooking mode or the keep-warm mode. The controller  39  controls operations of the heating source  31  and the first and second illumination lamps  33  and  35  according to whether it is in the cooking mode or the keep-warm mode. 
     Hereinafter, a cooker according to a fourth embodiment will be described in detail. 
       FIG. 5  is a perspective view of a state in which a cooker is installed in a kitchen according to a fourth embodiment.  FIG. 6  is an exploded perspective view of the cooker according to the fourth embodiment.  FIG. 7  is an exploded perspective view illustrating a main part of the cooker according to a fourth embodiment. 
     Referring to  FIG. 5 , in the current embodiment, a cooker  100  is installed in a side of a kitchen corresponding to an upper side of a gas oven range  500 . For example, a gas oven range may be used as the gas oven range  500  installed below the cooker  100 . The cooker  100  additionally has a hood function, which purifies combustion gas containing foreign substances generated when the food is cooked on the gas oven range  500  to discharge the purified gas to an indoor room or outdoor room. 
     Referring to  FIG. 6 , a cooking chamber  110  is defined in a cavity  101  of the cooker  100 . The cooking chamber is a space in which a food is cooked or kept warm. The cooking chamber  110  is eccentrically disposed from a front surface of the cavity to a left side of  FIG. 6 . 
     An electric component chamber  120  is defined inside the cavity  101  corresponding to a side opposite to the cooking chamber  110 . Various electric components such as a magnetron  121  oscillating a microwave transmitted into the cooking chamber  110 , a high voltage transformer  122  supplying high voltage current to the magnetron  121 , and a capacitor  123  are installed in the electric component chamber  120 . 
     A cooling fan assembly  124  for cooling the electric components is installed in the electric component chamber  120 . In more detail, the cooling fan assembly  124  generates an airflow in which air is sucked through a cooling suction hole (described later)  131  to cool the electric components, and then the air circulates inside the cooking chamber  110  and is discharged through a cooling exhaust hole (described later)  133 . 
     A front plate  130 , a back plate  140 , an upper plate  150 , a bottom plate  160 , and two side plates  170  are disposed on a front surface, a rear surface, a top surface, a bottom surface, and both side surfaces of the cavity  101 , respectively. That is, the back plate  140 , the upper plate  150 , the bottom plate  160 , and the side plates  170  define a rear surface, a ceiling surface, a bottom surface, and both side surfaces of the cooking chamber  110 , respectively. At this time, the bottom plate  160  extends to the electric component chamber  120  to substantially define also a bottom surface of the electric component chamber  120 . Here, the bottom surface of the electric component chamber  120  may be defined by a separate plate different from the bottom plate  160 . 
     The cooling suction hole  131 , the cooling exhaust hole  133 , and a hood exhaust hole  135  are defined in an upper end of the front plate  130 . The cooling suction hole  131  is defined in an upper end of a right side of the front plate  130  when viewed from the perspective of  FIG. 6 . The cooling suction hole  131  serves as an inlet port through which air is sucked into the electric component chamber  120  to cool the electric components. The cooling exhaust hole  133  serves as an outlet port through which the air cooling the electric components circulates inside the cooling chamber  110  and is discharged to the outside. The cooling exhaust hole  133  is defined in an upper end of a left side of the front plate  130  when viewed from the perspective of  FIG. 6 . The hood exhaust hole  135  is defined in a central portion of the front plate  130  corresponding between the cooling suction hole  131  and the cooling exhaust hole  133  when viewed from the perspective of  FIG. 6 . The hood exhaust hole  135  serves as an outlet port through which combustion gas generated in the gas oven range  500  is purified and charged. 
     An exhaust porous part  151  and two illumination porous parts  153  and  155  are disposed on the upper plate  150 . The exhaust porous  151  serves as an outlet port through which air discharged through the cooling exhaust hole  133  is discharged to the outside of the cooking chamber in a state where the air circulates inside the cooking chamber  110 . For this, the exhaust porous part  151  is disposed in a left end of a front end of the upper plate  150  corresponding to a rear side of the cooling exhaust hole  133  when viewed from the perspective of  FIG. 6 . The illumination porous parts  153  and  155  illuminate the inside of the cooking chamber  110 . The illumination porous parts  153  and  155  are disposed at a side of the upper plate  150  corresponding to a rear side of the hood exhaust hole  135 . The illumination porous parts  153  and  155  include first and second illumination porous parts  153  and  155 . 
     A suction porous part  171  is disposed on the right side plate of the side plates  170  when viewed from the perspective of  FIG. 6 . The suction porous part  171  servers as an inlet port through which the air cooling the electric components is sucked into the cooking chamber  110 . 
     A base plate is coupled to a lower end of the cavity  101 . The base plate  180  substantially defines an outer appearance of a bottom surface of the cooker  100 . The base plate  180  is vertically spaced a predetermined distance from the bottom plate  160  in a state where the base plate  180  is coupled to the lower end of the cavity  101 . A hood suction hole  181  is defined in the base plate  180 . The hood suction hole  181  serves as an inlet port through which combustion gas generated in the gas oven range  500  is sucked. 
     A waveguide  191  is installed on the upper plate  150 . The waveguide  191  guides the microwave oscillated in the magnetron  121  to the inside of the cooking chamber  110 . The waveguide  191  has one end extending upward from the electric component chamber  120  in a state where the waveguide  191  is installed on a top surface of the upper plate  150 . An antenna of the magnetron  121  is disposed on the one end of the waveguide  191  extending upward from the electric component chamber  120 . 
     A convection device is installed on the upper plate  150 . The convection device  193  includes a convection fan (not shown) and convention heater (not shown), which circulate and heat air within the cooking chamber  110 . In the fourth embodiment, the convection device  193  is disposed on a left side of the upper plate  150  adjacent to the exhaust porous part  151  when viewed from the perspective of  FIG. 6 . 
     A vent fan assembly  195  is installed on a rear end of the upper plate  150 . The vent fan assembly  195  generates an airflow in which combustion gas generated in the gas oven range  500  is sucked through the hood suction hole  181  and discharged through the hood exhaust hole  135 . For this, a suction part  196  of the vent fan assembly  195  faces both sides, and a discharge part  197  of the vent fan assembly  195  faces upward. 
     An air guide  199  is disposed in the electric component chamber  120 . The air guide  199  is spaced a predetermined distance from the back plate  140 . The electric component chamber  120  and a hood suction passage (described later) are partitioned by the air guide  199 . 
     An air duct  200  is installed in an upper portion of the cavity. The air duct  200  includes a cooling suction part  210 , a cooling discharge part  220 , and a hood exhaust part  230 . The air for cooling electric components is sucked and discharged through the air duct  200 , and the combustion gas generated in the gas oven range  500  is discharged through the air duct  200 . 
     The cooling suction part  210  is disposed at a right side of the air duct  200  when viewed in  FIG. 6 . Substantially, the cooling suction part  210  is disposed at a portion of right side of the upper plate  150  and an upper side of the electric component chamber  120 , which correspond to a rear side of the cooling suction hole  131  when viewed in  FIG. 6 . A cooling suction passage (described later) is disposed in the cooling suction part  210 . Also, a first air barrier  211  is disposed on a left end and rear end of the cooling suction part  210  in  FIG. 6 . The first air barrier  211  partitions the cooling into a hood suction passage (described later) and a hood exhaust passage. A communication opening  213  communicating the cooling suction passage with the electric component chamber  120  is defined in the cooling suction part  210 . 
     The cooling exhaust part  220  is disposed at a left side of the air duct  200  in  FIG. 6 . The cooling exhaust part  220  is disposed at a left upper side of the upper plate  150  corresponding to a rear side of the cooling exhaust hole  133  in  FIG. 6 . Thus, the cooling exhaust hole  133  is disposed substantially above the exhaust porous part  151 . A cooling exhaust passage is disposed between the cooling exhaust part  22  and the upper plate  150 . A second air barrier  221  is disposed at both ends of a top surface and a rear end of the cooling exhaust part  220 . The hood suction passage and the hood exhaust passage are partitioned by the second air barrier  221 . 
     The hood exhaust part  230  is disposed at a central portion of the air duct  200  corresponding between the cooling suction part  210  and the cooling exhaust hole  133  in  FIG. 6 . The hood exhaust part  230  is disposed as a central portion of the upper plate  150  corresponding to a rear side of the hood exhaust hole  135 . Thus, the hood exhaust part  230  is disposed above the first and second illumination porous parts  153  and  155 . The hood exhaust passage is disposed in the hood exhaust part  230 . Also, the vent fan assembly  195  and a filter (described later) are mounted on the hood exhaust part  230 . First and second illumination openings  231  and  233  are defined in the hood exhaust part  230 . A portion of a bottom surface of the hood exhaust part corresponding to a vertically upper side of the first and second illumination porous parts  153  and  155  is cut to form the first and second illumination openings  231  and  233 . Referring to  FIGS. 6 and 7 , a coupling boss  235  is disposed on the hood exhaust part  230  corresponding between the first and second illumination porous parts  153  and  155 . The coupling boss  235  is disposed longitudinally on a bottom surface of the hood exhaust part  230  in front and rear directions. A coupling hole  236  to which a coupling mechanism S is coupled is defined in the coupling boss  235 . The coupling hole  236  is exposed through a region vertically overlapping the hood exhaust hole  135 , i.e., the hood exhaust hole  135 . 
     A filter  240  is installed on a front end of the hood exhaust part  230 . The filter  240  filters foreign substances contained in the air discharged through the hood exhaust hole  135  by an operation of the vent fan assembly  195 . 
     First and second lamp assemblies  250  and  260  are installed in the hood exhaust part  230 . The first and second lamp assemblies  250  and  260  illuminate the inside of the cooking chamber  110 . In more detail, the first lamp assembly  250  is disposed in the first illumination opening  231  to illuminate the inside of the cooking chamber  110  in case of the cooking mode for cooking the food within the cooking chamber  110 . The second lamp assembly  260  is disposed in the second illumination opening  233  to illuminate the inside of the cooking chamber  110  in case of the keep-warm mode for keeping the foods warm in the cooking chamber  110 . 
     Referring to  FIGS. 6 and 7 , the first lamp assembly  250  includes a first lamp  251 , a first lamp holder  253 , and a first lamp bracket  255 . The first lamp  251  emits light for illuminating the inside of the cooking chamber  110 . For example, the first lamp  251  may emit yellow light. The first lamp  251  is coupled to the first lamp holder  253 . The first lamp  251  and the first lamp holder  253  are installed on the first lamp bracket  255 . The first lamp bracket  255  has an approximately hexahedral shape in which a portion of one (in the fourth embodiment, a right surface in  FIGS. 6 and 7 ) of a bottom surface and an edge surface thereof is opened. A first coupling flange  256  is disposed on an upper end of the opened edge surface of the first lamp bracket  255 . The first coupling flange  256  extends outwardly and perpendicularly from the opened edge surface of the first lamp bracket  255 . A first coupling piece  257  is disposed on the first coupling flange  256 . A portion of the first coupling piece  257  may be bent upwardly and perpendicularly with respect to the first coupling flange  256 . A first through hole  258  is defined in the first coupling piece  257 . The coupling mechanism s passes through the first through hole  258 . A first support flange  259  is disposed on an upper end of the edge surface facing the opened edge surface of the first lamp bracket  255 . The first support flange  259  extends in a direction opposite to that of the first coupling flange  256 . The first coupling flange  256  and the first support flange  259  are portions on which the first lamp assembly  250 , more particularly, the first lamp bracket  255  is supported by the top surface of the hood exhaust part  230  in a state where the first lamp bracket  255  is seated on the first illumination opening  231 . 
     Also, the second lamp assembly  260  has the same component as that of the first lamp assembly  250  overall. That is, the second lamp assembly  260  is disposed in the second illumination opening  233 , and includes a second lamp  261 , a second lamp holder  263 , and a second lamp bracket  265 . The second lamp bracket  265  has an approximately rectangular parallelepiped shape in which a bottom surface thereof and a surface thereof facing the opened edge surface of the first lamp bracket  255  are opened. Also, a second coupling flange  266  and a second support flange  269  are disposed on the second lamp bracket  265 . A second coupling piece  267  is disposed on the second coupling flange  266 . Also, a second through hole  268  is defined in the second coupling piece  267 . 
     The first and second coupling flanges  256  and  266  vertically overlap each other in a state where the first and second lamp assemblies  250  and  260  are installed in the first and second illumination openings  231  and  233 , respectively. The first and second through holes  258  and  268  communicate with the coupling hole  236  in a front-rear direction. 
     A color filter  270  is disposed on the second illumination opening  233 . The color filter  240  converts light emitted from the second lamp  261 , i.e., the yellow light into light having a color different from the yellow color, e.g., red light. If the second lamp  261  emits light having a color different from that of the first lamp  251 , the color filter  240  may be omitted. 
     A vent grill  280  is installed on an upper end of a front surface of the front plate  130  corresponding to the cooling suction hole  131 , the cooling exhaust hole  133 , and the hood exhaust hole  135 . The vent grill  280  covers the cooling suction hole  131 , the cooling exhaust hole  133 , and the hood exhaust hole  135 , and simultaneously, guides upwardly the air or combustion gas discharged through the cooling exhaust hole  133  and the hood exhaust hole  135 . 
     An out case  290  covers the top surface and both side surfaces of the cavity  101 . That is, the out case  290  defines an outer appearance of a top surface and both side surfaces of the cooker  100 . Here, the upper plate and the side plates  170  are vertically or horizontally spaced a predetermined distance from the out case  290 . 
     Referring to  FIGS. 5 and 6 , the cooking chamber  110  is selectively opened or closed by a door  300 . The other end of the door  300  is pivotally installed in front and rear directions on the cavity  101 , centered about one end thereof. A door handle  310 , which is grasped by a user to rotate the door  300  is disposed on a front surface of the door  300 . 
     A first control panel  410  is disposed on a lower end of the door  300 . The first control panel  410  receives various signals for operating the cooker  100 . Also, various components for display various information with respect to the operation of the cooker  100  to the outside are installed on the first control panel  410 . Particularly, the first control panel  410  receives the manipulation signal for cooking the food or keeping the food warm in the cooking chamber  110 . 
     A second control panel  420  is disposed on the front surface of the cavity  101  corresponding to a front side of the electric component chamber  120 , i.e., a right portion of the front plate  130  in drawings. Various components for controlling the operation of the cooker  100  are installed on the second control panel  420 . 
     A plurality of passages is disposed in the cooker  100 . More particularly, the cooling suction passage, cooling exhaust passage, hood suction passage, and hood exhaust passage are disposed in the cooker  100 . The air sucked through the cooling suction hole  131  and the air discharged through the cooling exhaust hole  133  flow into the cooling suction passage and the cooling suction passage and the cooling exhaust passage, respectively. Also, the air sucked through the hood suction hole  181  and the air discharged through the hood exhaust hole  135  flow into the hood suction passage and the hood exhaust passage, respectively. 
     The cooling suction passage is disposed between the cooling suction part  210  and the out case  290 . The cooling suction passage communicates with the cooling suction hole  131 , and also communicates with the electric component chamber  120  through the communication opening  213 . The cooling exhaust passage is disposed between the upper plate  150  and the cooling exhaust part  220 . The cooling exhaust passage communicates with the cooling exhaust hole  133  and the exhaust porous part  151 . 
     Thus, when the cooling fan assembly  124  is operated, the air sucked through the vent grill  280  and the cooling suction hole  131  flows into the cooling suction passage. The air flowing into the cooling suction passage flows into the electric component chamber  120  through the communication opening  213  to cool the electric components. The air cooling the electric components flows into the cooking chamber  110  through the suction porous part  171  to circulate the inside of the cooking chamber  110 , and then, the air flows into the cooling exhaust passage through the exhaust porous part  151 . The air flowing into the cooling exhaust passage is discharged through the cooling exhaust hole  133  and the vent grill  280 . 
     The hood suction passage is disposed on a lower portion of the cavity  101 , both sides of the cavity  101  except the electric component chamber  120 , and an upper portion of the cavity  101  except the vent fan assembly  195  and the air duct  200 . Substantially, the hood suction passage is disposed between the bottom plate  160  and the base plate  180 , between one of the side plates  170  and the out case  290 , because the other of the side plates  170  and the out case  290  and the air guide  199 , and between the upper plate  150  and the out case  290  and the air duct  200 . The hood exhaust passage is disposed between the hood exhaust part  230  and the out case  290 . The hood suction passage communicates with the hood suction hole  181  and the suction part  196  of the vent fan assembly  195 . The hood exhaust passage communicates with the discharge part  197  of the vent fan assembly  195  and the hood exhaust hole  135 . 
     Thus, when the vent fan assembly  195  is operated, the combustion gas generated in the gas oven range  500  is sucked through the hood suction hole  181  to flow into the hood suction passage. The combustion gas flowing into the hood suction passage is sucked into the suction part  196  of the vent fan assembly  195  and discharged through the discharge part  197  of the vent fan assembly  195 . The combustion gas discharged through the discharge part  197  of the vent fan assembly  195  flows into the hood exhaust passage. The combustion gas flowing into the hood exhaust passage cools the first and second lamp assemblies  250  and  260  and is discharged through the hood exhaust hole  135  and the vent grill  280  in a state where foreign substances therein are filtered by passing through the filter  240 . 
     Hereinafter, an effect of the cooker according to the fourth embodiment will be described. 
     First, a process for cooking the foods or keeping the foods warm using the cooker according to the fourth embodiment will be described. 
     When the user manipulates the first control panel  410  to input the manipulation signal for cooking the food, the magnetron  121  or/and the convention device  193  are operated. Thus, the food is cooked in the cooking chamber  110 . In the cooking mode, the first lamp assembly  250  is operated to illuminate the inside of the cooking chamber  110 . Thus, the yellow light is emitted into the cooking chamber  110 . Here, the second lamp assembly  260  is not operated. 
     When the user manipulates the first control panel  410  to input the manipulation signal for keep the food warm, the convection device  193  is operated to perform the keep-warm mode for keeping the food warm in the cooking chamber  110 . The keep-warm mode may be automatically performed after the cooking mode is completed. Also, the convection device  193  is operated to a low output when compared to the cooking mode. 
     When the keep-warm mode is performed, the second lamp assembly  260  is operated to illuminate the inside of the cooking chamber  110 . As described above, the second lamp assembly  260 , more particularly, light of the second lamp  261  is converted in color while passing through the color filter  240 . That is, in the keep-warm mode, light having a color different from that of the cooking mode is emitted into the cooking chamber  110 . 
     Thus, light having colors different from each other is emitted into the cooking chamber  110  according to whether it is in the cooking mode or the keep-warm mode. Thus, the user may easily confirm whether the cooker  100  performs the cooking mode or keep-warm mode even though the user confirms the information displayed on the first control panel  410 . 
     Next, a process of replacing or repairing the first and/or second lamp assembly of the cooker according to the fourth embodiment will be described. 
     To replacing the first and/or second lamp assembly  250  and/or  260 , the cooker installed in a kitchen is pulled forwardly by a predetermined distance. Then, the vent grill  280  is detached from the front plate  130 . When the vent grill is detached, the coupling mechanism S is separated by inserting a tool such as a screwdriver through the hood exhaust hole  135 . 
     In a state where the coupling mechanism S is separated, the first and/or second lamp assembly  250  and/or  260  are(is) moved upward to detach the first and/or second lamp assembly  250  and/or  260  from the first and/or illumination opening  231  and/or  233 . Then, the first and/or second lamp assembly  250  and/or  260  are replaced or repaired. Then, the first and/or second lamp assembly  250  and/or  260  are(is) assembled in reverse order with respect to the above-described order. 
     Thus, the user may replace or repair the first and/or second lamp assembly  250  and/or  260  without completely separating the cooker  100 . Also, since the tool for separating the coupling mechanism S is moved in a horizontal direction, but a vertical direction, the replacement or repair process may be easily performed. 
     In the above-described embodiments, although the cooker of the cooking appliances is explained as an example, any certain type of cooking appliances that is capable of cooking the food and keeping the food warm may be applicable. 
     Also, in the above-described fourth embodiment, although the convection device provides heat for cooking the food and keeping the food warm in the cooking chamber, the present invention is not limited thereto. That is, the convection device may provide only heat for keeping the food warm in the cooking chamber. 
     As describe above, the cooker according to the embodiments may expect following effects. 
     In the embodiments, the light having the colors different from each other is emitted according to whether it is in the cooking mode in which the food is cooked in the cooking chamber or keep-warm mode in which the food is kept warm in the cooking chamber. Thus, the user may easily confirm whether the food is cooked or kept warm. 
     Also, in the embodiments, one lamp serves as the heating source for keeping the food warm and the illumination source for illuminating the inside of the cooking chamber. Thus, the keeping warm of the food and the illumination of the cooking chamber may be performed through the further simple structure. 
     Also, in the embodiments, the first and second lamp assemblies for illuminating the inside of the cooking chamber are fixed by one coupling mechanism. Thus, the number of parts constituting the product may be reduced, and thus, manufacturing costs of the product may be reduced. 
     In addition, the first and/or second lamp assembly may be replaced or repaired without completely separating the cooker from the installed place. Thus, serviceability of the product may be improved. 
     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.