Abstract:
The present invention relates to a stand-type LED lighting device comprising: a stand part; a support part fixed to the stand part and extending upwards; and a lighting part fixed to the upper part of the support part and emits light, wherein the lighting part comprises: an inclined reflective plate; an upper lighting part positioned above the reflective plate; and a lower lighting part positioned below the reflective plate. In the present invention, the lighting part is divided into the upper and lower lighting parts, and the reflective plate is provided between the upper and lower lighting parts so as to enable each or both of the upper lighting part and the lower lighting part to be used according to a user&#39;s selection, thereby enabling the stand-type LED lighting device to be used as a room lighting lamp or a mood lamp, in accordance with circumstances.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is a continuation of International Application No. PCT/KR2014/004114 filed on May 8, 2014, which claims priority to Korean Application No. 10-2013-0051844 filed on May 8, 2013, which application is incorporated herein by reference. 
     
    
     TECHNICAL FIELD 
       [0002]    The present invention relates to a stand-type LED lighting device, and more specifically, to a stand-type LED lighting device that allows for random selection of its lighting direction and that has excellent heat dissipation characteristics. 
       BACKGROUND ART 
       [0003]    Generally, indoor lighting installed in a confined space provides a lower brightness than that of outdoor lighting. Thus, indoor lighting adopts indirect lighting via a reflective plate rather than direct lighting. That is, indoor lighting is required to light up the room while, if possible, avoiding from directly shining the user&#39;s eyes. Indoor lighting is sometimes installed on the ceiling or wall, but other times comes in a stand-type for partial illumination or decoration. 
         [0004]    Recently, stand-type lights are being developed for better interior designs while serving as mood lighting as well as indoor lighting, and effective indoor lighting is required to create various atmospheres. 
         [0005]    Further, there is in development indoor lighting technology that adopts LEDs that are lower-power consumption, long-lifespan, and more eco-friendly light sources as compared with existing incandescent lamps or fluorescent lamps. 
         [0006]    Basically, LEDs may emit light of various illuminances and colors depending on settings, but due to difficulties in settings for home use, they are mostly manufactured to provide a single color of light, like white or daylight color. 
         [0007]    Indoor lamps employing single color-emissive LEDs cannot achieve an enhanced decoration effect that is something more than mere lighting, and thus fail to live up to the market demand. 
         [0008]    Conventional stand-type LED lighting devices are configured to primarily provide downlighting for table use. An example of providing uplighting is disclosed in Korean Utility 
         [0009]    Model Application Publication No. 20-2010-0013001. As per the Koran Utility Model Application Publication, uplighting is provided to create some patterns, like constellation, on the ceiling and its structure fails to provide uplighting and downlighting depending on the user&#39;s selection. 
         [0010]    In other words, it cannot simultaneously provide downlighting and mood lighting. 
       SUMMARY 
       [0011]    To address the above problems, an object of the present invention is to provide a stand-type LED lighting device that includes main lighting, which is oriented downwards, and mood lighting, which is oriented upwards, that may be selected by the user for illumination. 
         [0012]    Further, there is provided a stand-type LED lighting device in which uplighting and downlighting may be clearly differentiated. Light from the uplighting may evenly scatter rather than focusing on the ceiling in the room, allowing an aesthetic effect. 
         [0013]    Further, according to the present invention, there is provided a stand-type LED lighting device that may effectively dissipate heat from the LEDs. 
         [0014]    To achieve the above objects, according to the present invention, a stand-type LED lighting device comprises a base, a support fixed to the base and extending upwards, and a lighting part fixed to an upper portion of the support and diffusing light, wherein the lighting part includes a reflective plate that is an inclined surface, an upper lighting part positioned over the reflective plate, and a lower lighting part positioned under the reflective plate. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0015]    The above and other aspects, features, and advantages of the present disclosure will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: 
           [0016]      FIG. 1  is a cross-sectional view illustrating a stand-type LED lighting device according to a preferred embodiment of the present invention. 
           [0017]      FIG. 2  is an exploded perspective view illustrating a lighting part according to the present invention. 
           [0018]      FIG. 3  is a cross-sectional view illustrating in detail a portion of a lower lighting part according to the present invention. 
           [0019]      FIG. 4  is a cross-sectional view illustrating in detail a portion of an upper lighting part according to the present invention. 
           [0020]      FIG. 5  is a cross-sectional view illustrating a stand-type LED lighting device according to another embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION  
       [0021]    Hereinafter, a stand-type LED lighting device according to the present invention is described in detail with reference to the accompanying drawings. 
         [0022]      FIG. 1  is a cross-sectional view illustrating a stand-type LED lighting device according to a preferred embodiment of the present invention.  FIG. 2  is an exploded perspective view illustrating the lighting part  100  of  FIG. 1 . 
         [0023]    Referring to  FIGS. 1 and 2 , there are included a lighting part  100  including a reflective plate  130  inside an upper lighting part  110  and a lower lighting part  120 , a support  200  extending downwards from the center of a lower portion of the lighting part  100 , and a base  300  having an upper portion connected with the support  200  to stand the lighting part  100  up and receiving a power supply and a control circuit therein. 
         [0024]    The lower lighting part  120  includes a lower substrate  121  having a hole H 3  at the center thereof, through which the support  200  is inserted, and over which multiple LEDs  124  are arranged, a light-transmissive cover  122  receiving the lower substrate  121  in a lower portion thereof and allowing light reflected by the reflective plate  130 , which reflects light from the LEDs  124 , to be scattered to the outside, and a heat-dissipating member  123  coupled with a lower portion of the light-transmissive cover  122  and providing a seating surface on which the lower substrate  121  is seated to dissipate heat from the LEDs  124 . 
         [0025]    The light-transmissive cover  122  has a cylindrical structure with a narrower top and a broader bottom. At the center of a lower portion of the light-transmissive cover  122  is prepared a hole H 2  through which the support  200  is inserted and that diffuses light reflected by the reflective plate  130  to produce surface light emission. 
         [0026]    The upper lighting part  110  includes a side-surface light emitting part  112  that is positioned at an upper portion of the center of the reflective plate  30  to emit light to the side surface, an upper plate  111  having multiple LEDs  114  and installed in the side-surface light emitting part  112 , and an upper diffusing part  113  having a hole H 5  at the center thereof to allow for coupling of a portion of an upper portion of the side-surface light emitting part  112 , shaped in structure as a disc that rises up to the edge, and diffusively scattering light emitted from the side surface of the outlet  12  and light reflected on the top surface of the reflective plate  130 . 
         [0027]    Hereinafter, the configuration and operation of the stand-type LED lighting device configured as above are described in greater detail according to a preferred embodiment of the present invention. 
         [0028]    First, the support  200  uses a metal pipe and allows electric wires to pass therethrough to supply power to the lower substrate  121  and the upper substrate  111 . The support  200  also plays a role to conduct and dissipate heat generated from the lower substrate  121  and the upper substrate  111 . 
         [0029]    A lower end of the support  200  is fixed to an upper portion of the base  300 , and an upper end thereof is inserted passing through the lighting part  100 . 
         [0030]    The lower substrate  121 , the light-transmissive cover  122 , and the light-dissipating member  123  constituting the lower lighting part  120 , which is a lower side of the lighting part  100 , have the holes H 3 , H 2 , and H 1 , respectively, through which the support  200  is inserted. The hole H 2  of the light-transmissive cover  122  is configured so that the upper portion of the light-dissipating member  123  is partially inserted through the hole H 2 , and the lower substrate  121  is positioned abutting the upper portion of the light-dissipating member  123 . 
         [0031]      FIG. 3  is a cross-sectional view illustrating in detail a portion of a lower lighting part  120 . 
         [0032]    Referring to  FIG. 3 , on an upper side of the light-dissipating member  123  is prepared a seating surface  127  where the lower substrate  121  is seated. A coupling cut  126  is prepared along the periphery of the seating surface  127 . The coupling cut  126  is a cut where the lower end of the light-transmissive cover  122  is inserted and where the light-dissipating member  123  and the light-transmissive cover  122  are joined together. 
         [0033]    The support  200  passes through the light-dissipating member  123  and the lower substrate  121 . A through hole  220  is prepared in the lower substrate  121  which is seated on the seating surface  127  of the light-dissipating member  123  to connect electric wires. 
         [0034]    When the multiple LEDs  124  prepared on the lower substrate  121  as configured above are supplied power to emit light, the LEDs  124  may generate heat. The generated heat is transferred to the light-dissipating member  123  and is discharged out while heat-exchanging with the external air. Here, multiple heat-dissipating fins  125  are prepared on the outer side of the light-dissipating member  123  to facilitate heat dissipation. 
         [0035]    Referring back to  FIGS. 1 and 2 , light emitted from the LEDs on the lower substrate  121  is directed upwards and is reflected on the bottom of the reflective plate  130 . 
         [0036]    Here, the reflective plate  130  is shaped so that its center is positioned lower while its edge is positioned higher and the bottom of the reflective plate  130  becomes a reflecting surface whose center projects downwards. 
         [0037]    Accordingly, light reflected on the bottom of the reflective plate  130  is dispersed externally and is discharged out through the light-transmissive cover  122 . Here, the light-transmissive cover  122  may be formed of a transparent material that fully transmits the reflected light or may be formed of a translucent material that allows the light-transmissive cover  122  itself to reflect light to produce a surface light emission. 
         [0038]    The upper end of the support  200  is inserted through the hole H 4  prepared in the reflective plate  130  and is then positioned inside the reflective plate  130 . At the center of the upper portion of the reflective plate  130  is seated and fixed the side-surface light emitting part  112  of the upper lighting part  110 . 
         [0039]      FIG. 4  is a cross-sectional view illustrating in detail a portion of an upper lighting part  110  according to the present invention. 
         [0040]    Referring to  FIG. 4 , the side-surface light emitting part  112  of the upper lighting part  110  is a disc having an upper plate  115  and a lower plate  116  each formed of a metal and a cylindrical side-surface diffusing plate  117  between the upper plate  115  and the lower plate  116 . 
         [0041]    The lower plate  116  of the side-surface light emitting part  112  is coupled and fastened to the upper end of the support  200 , and the upper substrate  111  is positioned inside the side-surface light emitting part  112 . As shown in the drawings, the upper substrate  111  is seated on the lower plate  116  and may have multiple LEDs  114  mounted on the upper surface thereof. Here, heat emitted from the LEDs  114  are dissipated through the lower plate and dissipated through the reflective plate  130  abutting the bottom of the lower plate  116 . 
         [0042]    As such, the reflective plate  130  may prevent light interference between the upper lighting part  110  and the lower lighting part  120  and may be used as heat dissipating means to easily draw out the heat generated from the LEDs  114  of the upper substrate  111 . 
         [0043]    As such, heat dissipation may be easily done using the reflective plate  130 . Further, heat may be conducted through the support  200 , which is formed of a metal, and is then dissipated through the light-dissipating member  123  while also conducted and dissipated through the monitor  300 . Therefore, better heat dissipation may be achieved. 
         [0044]    The upper substrate  111  is not required to have such a structure as shown in the drawings, and for better side surface emission, it may be disposed so that the light emission surface of the LEDs  114  face the side surface. 
         [0045]    Light emitted from the LEDs  114  of the upper substrate  111  in the side-surface light emitting part  112  comes out only through the side-surface diffusing plate  117 , and the coming-out light is reflected on the top of the reflective plate  130  and diffused by the upper diffusing part  113  to the outside. 
         [0046]    Such configuration of the upper lighting part  110  presents no direct light emission to the ceiling in the room and rather creates an ambient atmosphere of lighting through the side-surface diffusing plate  117  and the upper diffusing part  113 . Accordingly, the upper lighting part  110  may be used as a mood lamp. 
         [0047]    In the case where power is supplied only to the upper substrate  111  of the upper lighting part  110 , light from the upper lighting part  110  is not radiated towards the lower lighting part  120  by the reflective plate  130 , and even when power is supplied only to the lower substrate  121  of the lower lighting part  120 , light from the lower lighting part  120  does not influence the upper lighting part  110  due to the reflective plate  130 . 
         [0048]    Even when power is supplied to both the upper substrate  111  and the lower substrate  121 , light beams respectively from the upper lighting part  110  and the lower lighting part  120  are diffused, split up and down. 
         [0049]    Accordingly, making the color of the upper diffusing part  113  of the upper lighting part  110  different from the light-transmissive cover  122  of the lower lighting part  120  may create various atmospheres. 
         [0050]      FIG. 5  is a cross-sectional view illustrating a stand-type LED lighting device according to another embodiment of the present invention. 
         [0051]    Referring to  FIG. 5 , the stand-type LED lighting device according to another embodiment of the present invention includes a bulb lighting part  140  in addition to the same configuration given for the stand-type LED lighting device described above in connection with  FIGS. 1 to 4  according to a preferred embodiment of the present invention. 
         [0052]    The bulb lighting part  140  includes a body  143  having a lower end fixed to the top of the upper plate  115  of the side-surface light emitting part  112  and an upper end extending upwards and positioned higher than the edge of the upper diffusing part  113 , a substrate  141  received in the hole prepared at the center of the top of the body  143 , multiple LEDs  144  mounted on the upper portion of the substrate  141 , and a lens  142  covering the top of the body  143 . 
         [0053]    The bulb lighting part  140  is illumination for creating an atmosphere and may produce various atmospheres depending on the color or function of the lens  142 . When the lens  142  is designed so that light is collected to an inside of the lens  142 , light may be concentrated on the light collected portion, thereby leading to more splendid illumination. This may serve as point illumination in addition to the ambient atmosphere created by the upper lighting part  110 . 
         [0054]    The body  143  is formed of a metal and plays a role to dissipate heat from the LEDs  144 . 
         [0055]    As such, the stand-type LED lighting device according to the present invention may create various types of illumination by preventing light interference between the upper lighting part  110  and the lower lighting part  120  and may effectively dissipate heat from the LEDs to prevent LED lifespan from shortening. 
         [0056]    It is apparent to one of ordinary skill in the art that the present invention is not limited to the embodiments described above and various changes or modifications may be made thereto without departing from the scope of the present invention. 
         [0057]    In the stand-type LED lighting device according to the present invention, the lighting part is divided into the upper lighting part and the lower lighting part. The reflecting part is provided between the upper lighting part and the lower lighting part. Thus, the upper lighting part and the lower lighting part each may be used by the user&#39;s selection. Further, the upper lighting part and the lower lighting part may be rendered simultaneously used so that they may be used for indoor lighting or mood lighting as necessary. 
         [0058]    Further, the present invention may prevent light interference between the lower lighting part and the upper lighting part by the reflective plate, enabling the main light to be used separately from the mood light. 
         [0059]    Further, according to the present invention, heat generated from the LEDs in the upper lighting part and the lower lighting part may be drained out through the support, preventing the lifespan of the LEDs from shortening.