• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention is an electrical connection and mechanical support after that, integrated in the tens or hundreds of LED chip, a PCB substrate having a size of several tens cm 2 number to the (Chip) having a predetermined wavelength of the LED traffic light, and filled with a transparent resin The support rod is mounted on the surface where the LED chip is integrated and attached to the reflector. It is an LED signal lamp device that arranges the light emitting part of the LED chip toward the reflector so as to maintain a uniform distribution of light emitted through the transparent window.
    公开号:KR19990032097A
    申请号:KR1019970053039
    申请日:1997-10-16
    公开日:1999-05-06
    发明作者:김창태；유정호
    申请人:유정호；세현반도체 주식회사；
    IPC主号:
    专利说明:

    LED traffic lights
    BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to traffic lights, and in particular, to LED traffic lights using a light emission display (LED).
    Conventional traffic lights use color filters to collect the light of a white light bulb, which is a traffic light source, in a reflector and to show the standard index red, yellow, and cyan of the traffic light. However, such a conventional incandescent light bulb signal lamp uses a low-efficiency incandescent light bulb, so the power consumption is high, the life of the light bulb is short, at least once every six months to replace the maintenance and repair costs associated with replacing the light bulb. In addition, since the bulb has a characteristic of suddenly shutting down, planned maintenance is not possible, and there is a high social loss due to the concern of traffic safety accidents and the disturbance of traffic flow, and the light enters through the color filter under the strong summer sun. The light is reflected by the reflector and radiated outside the signal, which may cause the traffic light to be mistaken, which may cause an accident.
    Recently, researches and experiments on LED signal lamps using semiconductor LED lamps have been conducted steadily.
    1 is a cross-sectional view of a LED traffic light according to the prior art.
    As shown in FIG. 1, about 500 LED lamps 1 as a light source are assembled on a PCB board 3 of 500 to 600 cm 2 and a transparent window 2 is used to reduce external influences. These LED traffic lights have high efficiency, which is only about 20 to 30% compared to conventional incandescent bulbs in terms of power consumption, and their lifespan is about 10 years longer than incandescent bulbs. can do. In addition, hundreds of highly reliable LED lamps are configured in parallel in one traffic light, which is innovative and stable for traffic safety accidents caused by sudden operation interruption caused by existing unstable traffic lights and social loss caused by traffic flow disruption. In the case of LED traffic lights, color filters and reflectors are not used, which prevents accidents or congestion caused by the misunderstanding of traffic lights occurring under strong sun in summer.
    However, the conventional method of implementing the LED signal light is expensive because the hundreds of LED lamps must be assembled on a PCB substrate having a diameter of 30cm, and the weight of the LED signal light itself becomes a limiting factor in the actual installation.
    An object of the present invention devised to solve the above problems is to integrate a dozens to hundreds of LED chips on a PCB substrate of several to several tens of cm2 inexpensive, easy to replace, light weight and small size LED traffic In providing a traffic light.
    1 is a cross-sectional view of a LED lamp signal light according to the prior art.
    2 is a cross-sectional view of the LED traffic light according to the first embodiment of the present invention.
    Figure 3 is a LED lamp manufacturing method according to the present invention.
    4 is a sectional view of an LED traffic light according to a second embodiment of the present invention;
    5 is a cross-sectional view of the LED traffic light according to the third embodiment of the present invention.
    <Explanation of symbols for main parts of the drawings>
    1: LED lamp 2, 13, 33, 43: transparent window
    3, 11, 22, 30, 30 '41: PCB board 10, 20, 31, 31', 40: LED chip
    12, 25, 32, 42: support rod 14, 34, 44: reflector
    15, 35, 45: light 21: metal wiring
    23: Wire 24: Transparent resin
    LED traffic light of the present invention for achieving the above object comprises the steps of integrating the LED chip on the PCB substrate; Encapsulating the PCB substrate with a transparent resin and then fixing the PCB substrate to a central portion of the reflector using a connecting rod near the center of the PCB; And a transparent window to protect the PCB substrate from external environmental changes.
    Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
    2 is a cross-sectional view of the LED traffic light according to the first embodiment of the present invention.
    As shown in FIG. 2, the support rod 12 for connection is formed near the center of the PCB substrate 11 in which the LED chip 10 is integrated and fixed near the center of the reflector 14. (11) Install a transparent window (13) to protect.
    The light 15 emitted from the LED chip 10 integrated in the PCB substrate 11 is directed toward the reflector 14, and the light 15 reflected from the reflector 14 is directed to the outside through the transparent window 13. Come out. At this time, the radiation angle of the emitted light 15 is determined according to the curvature of the reflector 14 and the distance between the reflector 14 and the PCB substrate 11. Since the LED traffic light of the present invention has a surface light emitting effect, the light 15 emitted through the transparent window 13 has a constant luminance distribution in front of the traffic light.
    3 is an LED lamp manufacturing method according to the present invention.
    First, as shown in FIG. 3, several tens or hundreds of LED chips 20 are placed on a circular and square or constant shape PCB substrate 22 having a size of several to several tens of cm 2 having a constant metal wiring 21 formed thereon. Die bonding at intervals of um and wire bonding 23 are performed for electrical connection.
    Subsequently, the PCB substrate 22 in which the LED chip 20 is integrated is encapsulated with the transparent resin 24, and the supporting rod 25 is formed for electrical connection and mechanical support to the outside. This support rod 25 is used to connect to the electrical connection provided in the reflector 14. On the back side of the PCB substrate 22, that is, the back side on which the LED chip 20 is integrated, resistors or other circuits may be integrated, and cooling fins may be mounted as necessary.
    4 is a cross-sectional view of the LED traffic light according to the second embodiment of the present invention.
    As shown in FIG. 4, two sheets of the first PCB substrate 31 on which the first LED chip 30 is integrated and the second PCB substrate 31 'on which the second LED chip 30' is integrated are symmetrically disposed. To the support rod 32, which is electrically connected and mechanically supported at the central portion, to be attached to the reflector 34, and to install the transparent window 33 to protect the PCB boards 31 and 31 'from the external environment. do. The light 35 emitted from the first LED chip 30 integrated on the first PCB substrate 31 is directed toward the transparent window 33 and the second LED chip integrated on the second PCB substrate 31 ′ ( Light 35 emitted from 30 'is reflected by the reflector 34 and exits through the transparent window 33.
    5 is a cross-sectional view of the LED traffic light according to the third embodiment of the present invention.
    As shown in FIG. 5, in the PCB substrate 41 in which the LED chip 40 is integrated, a supporting rod 12 having electrical connection and mechanical support at the center portion thereof so that the LED chip 40 faces the transparent window 43. Attached to the reflector 34 to install a transparent window 43 to protect the PCB substrate 41 from the outside environment. Light 45 emitted from the LED chip 40 integrated on the PCB substrate 41 is directly emitted to the outside through the transparent window 43.
    Since the LED traffic light of the present invention integrates the LED chip on the PCB substrate of several to several tens of cm 2, the weight is light and small, so that the price can be reduced, the replacement is easy, and the light bulb has a shape similar to that of the light bulb. The advantage is that it is easy to replace incandescent bulbs.
    In addition, the light emitting part of the LED chip is disposed to face the reflecting mirror, so that the reflected light comes out through the transparent window, thereby providing a uniform brightness distribution.
    权利要求:
    Claims (12)
    [1" claim-type="Currently amended] In LED traffic light,
    PCB board integrated LED chip;
    A support rod sealing the PCB substrate with a transparent resin and then having electrical connection and mechanical support at a central portion thereof;
    A reflector fixing the support rod; And
    LED traffic light, characterized in that made of a transparent window to protect the PCB substrate.
    [2" claim-type="Currently amended] The method of claim 1,
    LED light is characterized in that the use of tens to hundreds of LED chips.
    [3" claim-type="Currently amended] The method of claim 1,
    The PCB substrate is circular and square or LED signal light, characterized in that having a size of several to several tens of cm 2 in a predetermined shape.
    [4" claim-type="Currently amended] The method of claim 1,
    LED light, characterized in that the light emitting portion of the LED chip facing the reflector so that the reflected light toward the transparent window.
    [5" claim-type="Currently amended] The method of claim 1,
    LED light, characterized in that the light emitting portion of the LED chip facing the transparent window so that the emitted light directly directed to the transparent window.
    [6" claim-type="Currently amended] The method of claim 1,
    LED signal light, characterized in that for mounting the metal plate or the cooling fin to facilitate heat dissipation from the LED driving circuit and LED protection circuit and the PCB substrate on the back of the PCB substrate.
    [7" claim-type="Currently amended] The method of claim 1,
    The PCB substrate is a LED traffic light, characterized in that for drilling a predetermined area to reduce the effect of the light reflected from the reflector is blocked by the PCB substrate.
    [8" claim-type="Currently amended] The method of claim 1,
    The PCB substrate is a LED traffic light, characterized in that to use a transparent glass or the like to remove the effect of the light reflected from the reflector is blocked by the PCB substrate.
    [9" claim-type="Currently amended] The method of claim 1,
    Flashlight, lighting, vehicle lamp, characterized in that using the PCB substrate integrated with the LED chip.
    [10" claim-type="Currently amended] In LED traffic light,
    A first PCB substrate on which the first LED chip is attached symmetrically and a second PCB substrate on which the second LED chip is integrated;
    A support rod which seals the first PCB board and the second PCB board with a transparent resin and makes electrical connections and mechanical supports at a central portion thereof;
    A reflector fixing the support rod; And
    LED traffic light, characterized in that made of a transparent window to protect the first PCB substrate and the second PCB substrate.
    [11" claim-type="Currently amended] The method of claim 10,
    And the first LED chip faces the transparent window and the second LED chip faces the reflector.
    [12" claim-type="Currently amended] The method of claim 10,
    LED signal light, characterized in that to facilitate the heat dissipation by inserting a metal plate between the first PCB substrate and the second PCB substrate.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1997-10-16|Application filed by 유정호, 세현반도체 주식회사
    1997-10-16|Priority to KR1019970053039A
    1999-05-06|Publication of KR19990032097A
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019970053039A|KR19990032097A|1997-10-16|1997-10-16|LED traffic lights|
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