KR20100019624A - Led lamp insided solar cell - Google Patents

Abstract

It provides a solar-embedded LED luminaire that can self-procure energy to drive a blower fan. The built-in cell LED luminaire mounts one or more high-brightness LEDs on a printed circuit metal substrate, and installs cells inside or outside the case around the light emitting part where the mounted LED emits light. In order to cool the heat dissipation board and the heat dissipation fin that are heated when emitting light, a blower fan and a predetermined heat dissipation path are configured on the other side or side of the LED mounting board which does not affect the LED lighting, When the LED is turned on, a part of the energy of the light emitted from the LED is converted into electrical energy by a solar cell installed around it to drive the blower fan to dissipate the removed heat through the heat discharge passage to the outside of the luminaire.

Description

Cell built-in LED lighting device {LED Lamp Insided Solar Cell}

The present invention relates to a LED light emitting device using an LED chip (hereinafter referred to as LED) mounted on a printed circuit metal substrate, and more specifically, to install a cell around the LED to improve the heat radiation characteristics of the LED lighting fixture, The present invention relates to a solar cell-type LED lighting device that converts a part of light into electrical energy by a solar cell when the LED emits light, and then drives a blower fan to cool the heat-dissipating substrate or the heat-dissipating fins.

Since LEDs have a long service life and low power consumption, they have recently been widely used in decorative lights, vehicles, signal lamps, advertisement signs, indoor lights, etc. from the viewpoint of environmental protection.

However, when the luminous intensity per unit output is mounted on a substrate with a high output high brightness LED (hereinafter referred to as an LED) of several W (watts) or more exceeding that of a conventional incandescent lamp or a fluorescent lamp, the temperature at the junction with the substrate generates a high temperature of 100 ° C or more. As a result, the LED lifetime is reduced, as well as problems such as peeling between the LED and the substrate and deterioration of the reflecting plate, and the luminous efficiency is also lowered.

Therefore, in the case of the lighting fixture mounted with LED, although the following techniques etc. are proposed for the improvement of heat dissipation for the reason mentioned above, it cannot be said that the situation reaches the limit in practical use.

<Patent Document 1> Japanese Utility Model Registration No. 3133586

<Patent Document 2> Japanese Patent Laid-Open No. 2008-27910

Patent document 1 can be said to be a typical example of the natural cooling system structure which cools using natural convection of air by forming many heat radiation fins on the circuit board which mounted LED. As such, the characteristics of the natural cooling method using the heat dissipation fins can be said to have a great effect in a good airflow environment. However, there is a limit to use in a ceiling, a narrow space, a tropical or subtropical region, etc. Will be. Therefore, the technology tends to shift gradually by a forced blow cooling method in which a blow fan is driven to a heat radiating fin to force cooling of the heat radiating fin, but in this case, the energy for driving the blow fan is in parallel with the power for emitting the LED. Therefore, it becomes necessary to rely on the external power source, which causes a problem of high power consumption.

In addition, Patent Document 2 relates to a socket-type LED lighting device, which is filled with a transparent or semi-transparent liquid in a container centered on a light emitting unit constituting the LED lighting device, and expects a heat radiation effect by thermal convection of the liquid. It is becoming. However, this also exposes a problem such as a disaster caused by the damaged container and the filling when the container is broken.

In the present invention, in the forced blow cooling method in which the high temperature heat radiated in the use of the LED lighting fixture by forcibly introducing the blower fan, an external power source is introduced as in the case where the LED is turned on as driving energy of the blower fan. Its technical problem is to provide LED lighting fixtures with built-in solar cells that can be self-procured internally without the need to reduce power loss.

In order to solve the above problems, the solar light-incorporating lighting apparatus of the present invention mounts one or more LEDs on a metal substrate and does not affect the lighting much. In a spare part of the substrate, a solar cell capable of driving a blowing fan by converting a part of the energy of light generated by the LED when the LED emits light into electrical energy is installed. And a blower fan for cooling the heat sink or metal substrate and the heat radiation fin of the connection as the LED emits high temperature is suitable for cooling the heat sink or the heat radiation fin, for example, the opposite side or side of the substrate on which the LED is mounted. In addition, the heat dissipation fins are arranged in an extra space where the heat dissipation fins are formed, and a predetermined heat discharge passage is also configured around the blower fan to dissipate the heat removed by cooling to the outside of the luminaire.

In the present invention, the following effects are expected.

(1) The built-in LED lighting fixture of the solar cell is a forced cooling method using a blower fan, which does not damage the peeling phenomenon between the substrate and the LED, the degradation of the reflector, the life of the LED, and the like, and keeps the luminous efficiency stable. You can.

(2) Since the LED luminaire having a built-in solar cell uses a part of the energy of the light emitted from the LED by the driving energy of the blower fan, power loss can be reduced.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring drawings.

Fig. 1 shows a socket type LED luminaire of an embodiment of the present invention, Fig. 2 shows a fluorescent lamp type LED luminaire, and Fig. 3 shows a cross-sectional view of the AB phase of Fig. 2.

As shown in the figure, the LED luminaire is a material of the substrate, so that the substrates 11 and 21 of metal (aluminum, magnesium, titanium, etc.) treated with an anodized (anodized), for example, having excellent thermal conductivity are possible. use. The substrates 11 and 21 of the metal are introduced by electroless plating and electroplating using the CVD method, the PVD method, or the polypyrrole as a base material, and constitute a predetermined circuit, and the LEDs are as good as lighting equipment. 1, 25) is mounted at least one, and if necessary, means such as to install the heat radiation fins (12, 32) to further enhance the heat dissipation effect of the substrate, and to be connected to an external power supply. The electrodes 4 and 24 for LEDs are also comprised so that it may be.

 In order to allow the mounted LEDs 1 and 25 to maintain sufficient light emission for illumination and to convert some of the light emitted therefrom into electrical energy, the interior of the casing 10 and 20 around the lower part of the LED light emitting part can be used. -Electric energy obtained from the solar cell by installing solar cells 3 and 23 composed of single crystal, polycrystalline or amorphous having a capacity capable of driving the blower fans 6 and 36 on the outside and on the substrate. In order to supply the to the blowing fans 6 and 36, the electrode 5 for a blowing fan is also comprised in parallel.

Blowing fans 6 and 36 for cooling the heat generated when the LED emits light are installed in the spare part on the opposite side or the side of the metal substrate on which the LED is mounted, and around the heat removed by the blowing fan. The heat exhaust passages 13 and 33 are also configured to be discharged to the outside of the luminaire.

In the LED luminaire having a built-in cell configured as described above, the LED emits light when power is supplied from the outside. When the LED emits light, most of the light generated from the LED (eg, 8) can be used for lighting, and is caused by the light (eg, 9) touching the solar cells 3 and 23 around the lower part of the LED light emitting part. Cooling is performed by directly and indirectly driving the blower fans 6 and 36 by the converted electric energy, and the removed heat is also discharged to the outside of the luminaire through the heat discharge passages 13 and 33.

The indirect driving of the blower fan refers to a method of driving the electric energy converted by the solar cell once it is stored and then driven when the temperature of the substrate, the heat sink, or the heat radiation fin reaches a predetermined temperature (eg, 80 ° C. or higher). .

In the present invention, the socket type and fluorescent type LED lighting fixtures have been described as examples, but the present invention can also be applied to high-power high-brightness LED lighting fixtures such as headlights, indicator lamps and street lamps related to automobiles. A person of ordinary skill in the art can be said to be a well-known fact.

1 is a socket-type LED lighting fixture of an embodiment of the present invention. .

Figure 2 is another embodiment of the present invention, a fluorescent type LED lighting fixture.

3 is a cross-sectional view taken along the line AB of FIG. 2.

<Description of the code>

1, 25: LED

2: cover

3, 23: solar cell

4, 24: LED electrode

5: heat dissipation fan electrode

6, 36: blower fan

7: socket

8, 9: LED luminous light (lumen)

10, 20: case

11, 22: LED substrate

12, 32: heat sink (pin)

13, 33: heat dissipation discharge passage

Claims (1)

In the LED lighting fixture, Part of the energy of the light emitted from the LED is converted into electrical energy by a solar cell installed around the LED, and then driving a blower fan to cool the heat generated in the LED substrate or the heat dissipation fins to release it to the outside of the luminaire. The built-in LED lighting fixture which features.

Images