KR102151094B1 - An LED lighting device for intensive illumination - Google Patents

Abstract

The present invention relates to an LED lighting device for concentrated lighting, comprising: a lower case portion having a plurality of flat inner surfaces such that a light outlet at the bottom thereof has a polygonal shape; and an upper case positioned at an upper side of the lower case portion to receive a power supply unit The substrate is coupled to the flat inner surface of the portion and the lower case portion, respectively, and the substrate on which the LED is mounted such that the light emitting surface faces the central portion of the polygon, and a plurality of protruding portions along the circumference of the lower case portion, respectively, The space includes a radiating fin communicating in the vertical direction of the lower case part. The present invention can minimize the manufacturing cost by fabricating the case in a single structure and assembling components such as a power supply unit, a substrate on which an LED is mounted, and a reflector through a light outlet, and thus the LED lighting device for concentrated lighting There is an effect that can accelerate the commercialization of

Description

An LED lighting device for intensive illumination

The present invention relates to an LED lighting device for concentrated lighting, which is easy to install and disassemble, and to an LED lighting device for concentrated lighting that can reduce the manufacturing cost by minimizing the number of parts.

Recently, as the amount of power consumption increases, concerns about the occurrence of blackouts in Korea are increasing, and various policies to reduce power consumption during times of high power consumption have been proposed. For example, a total energy consumption system is implemented for each building, and various methods are being implemented, such as charging a penalty for exceeding the standard, changing the lunch hour in Seoul, changing the working clothes regulations, and adjusting the intervals of subway lines.

As one of the methods for reducing the amount of power consumption as described above, a lighting device using an LED having significantly lower power consumption than conventional incandescent or fluorescent lamps has been proposed. However, in the case of an LED lighting device, the price of the LED itself is higher than that of an incandescent light bulb or a fluorescent lamp, and since the heat dissipation structure and power supply device must be separately provided, the price is relatively expensive, so it is difficult to commercialize it.

In particular, in a factory where precision work is performed or in an environment where fine design, assembly, or inspection needs to be performed, brighter lighting is required compared to the surroundings, and intensive lighting using an LED has been proposed to apply to such an environment.

An example of a conventional LED lighting device for concentrated lighting is Patent Publication No. 10-2013-0051247 of the applicant of the present invention (LED lighting device, published on May 20, 2013). The invention described in Korean Patent Publication No. 10-2013-0051247 provides a power supply housing and a lighting unit housing separately to separate the power supply unit and the LED light source that generate mutual heat in the LED lighting device for concentrated lighting. It is configured to interconnect.

Such a configuration has a very effective structure that can prevent shortening of the lifespan of the LED lighting device for concentrated lighting, which consumes more power than general lighting because heat is easily released.

In addition, since the light distribution can be adjusted by tilting the lighting unit housing, there is an advantage in that it can flexibly cope with changes in the working space. However, the cost increases because the power supply housing, the lighting housing and the connecting frame are separately manufactured, and after the parts are assembled to each other, the power supply housing, the lighting housing, and the connecting frame must be assembled again. There is a disadvantage in that the cost of the LED lighting device increases due to the consumption of time and manpower.

The technical problem to be solved by the present invention in consideration of the above problems is to provide an LED lighting device for concentrated lighting capable of reducing the number of individually manufactured parts and shortening the time required for assembly.

In addition, another technical problem to be solved by the present invention is to provide an LED lighting device for concentrated lighting that can prevent the lifespan of the lighting device from being shortened by the heat generated by effectively releasing heat generated from the concentrated lighting LED lighting device. .

In order to solve the above problems, the LED lighting device for concentrated lighting of the present invention includes a lower case portion having a plurality of flat inner surfaces such that a light outlet at the bottom thereof has a polygonal shape, and is located on the upper side of the lower case portion to supply power. An upper case portion accommodating a portion and a substrate coupled to a flat inner surface of the lower case portion, respectively, and a substrate on which an LED is mounted such that the light emitting surface faces the central portion of the polygon, and a plurality of protruding positions along the periphery of the lower case portion And, the space between each includes a heat dissipation fin that communicates in the vertical direction of the lower case portion.

In the LED lighting device for concentrated lighting of the present invention, the case is manufactured in a single structure, and components such as a power supply, a substrate on which the LED is mounted, and a reflector can be assembled into the case through a light outlet, thereby minimizing manufacturing cost. Therefore, there is an effect that can accelerate the commercialization of the LED lighting device for concentrated lighting.

In addition, in the LED lighting device for concentrated lighting of the present invention, the radiating fin is positioned on the rear side of the substrate on which the LED is mounted, and the radiating fin can be effectively heat-exchanged with outside air by an airflow generated by heat, thereby increasing heat dissipation efficiency. Therefore, there is an effect of preventing the life of the LED from being shortened by heat.

In addition, the LED lighting device for concentrated lighting of the present invention has an effect of preventing mutual heat conduction between the power supply unit and the LED, which is a source of heat, and thus preventing damage due to heat conduction.

1 is an exploded perspective view of an LED lighting device for concentrated lighting according to a preferred embodiment of the present invention.
Figure 2 is a cross-sectional view of the combined state of the LED lighting device for concentrated lighting according to a preferred embodiment of the present invention.
3 is a plan view of an LED lighting device for concentrated lighting according to a preferred embodiment of the present invention.
4 to 7 are cross-sectional views of the bonding procedure as seen from the cross-section in the AA direction in FIG. 3.
8 is a combined state diagram of the reflector viewed from the BB direction in FIG. 3.
9 is a schematic bottom view showing a main part of an LED lighting device for concentrated lighting according to the present invention.
10 is a cross-sectional view of an LED lighting device for concentrated lighting according to another embodiment of the present invention.
11 is an exploded perspective view of an LED lighting device for concentrated lighting according to another embodiment of the present invention.
FIG. 12 is a cross-sectional view illustrating a combined state of FIG. 11.
13 is a cross-sectional view of an LED lighting device for concentrated lighting according to another embodiment of the present invention.
14 is a perspective view of a reflector applied to FIG. 13.
15 is a perspective view of another embodiment of a reflector that can be applied to FIG. 13.

Hereinafter, an LED lighting device for concentrated lighting according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of an LED lighting device for concentrated lighting according to a preferred embodiment of the present invention, and FIG. 2 is a cross-sectional view of a combined state of FIG. 1.

Referring to FIGS. 1 and 2, respectively, a light-emitting opening 190 is provided on the bottom surface, and a vertical upper case part 110 and an installation surface having a plurality of inner surfaces located under the upper case part 110 A case part 100 including a lower case part 120 having a, and a power supply part 200 coupled and fixed to the inner side of the upper case part 110 of the case part 100 through the light outlet 190 , A heat insulating part 300 that prevents heat conduction by blocking the space between the upper case part 110 and the lower case part 120, and each installed on the installation surface of the lower case part 120, and the light emitting surface is Covers the plurality of substrates 122 provided with LEDs perpendicular to the installation surface, and the light outlet 190 on the lower side of the lower case portion 120, and reflects the light of the LEDs provided on the substrates 122, respectively. A reflective unit 400 including a reflective pocket unit 410 that is emitted through the bottom surface and a cover installed on the bottom of the lower case unit 120 to diffuse light emitted through each of the reflective pocket units 410 It consists of 500, including. A plurality of flat inner surfaces of the lower case unit 120 may be formed perpendicular to the inner circumferential surface of the lower case unit 120.

Hereinafter, the configuration and operation of the LED lighting device for concentrated lighting according to a preferred embodiment of the present invention configured as described above will be described in more detail.

First, the case portion 100 is integrally or separate from the upper case portion 110 of a vertical shape having a circular cross section in the horizontal direction in FIG. 2 on the upper side and the upper case portion 110 under the upper case portion 110 It is configured to include a lower case portion 120 provided.

The lower case portion 120 is illustrated in a hexagonal cross-sectional shape in the horizontal direction in FIG. 2, but the structure may be changed as necessary. The lower case part 120 must be provided with an installation surface having a flat inner surface, and six installation surfaces are shown in the drawing, but the number of installation surfaces may be changed as necessary.

That is, the number of installation surfaces is three or more, and as the number of installation surfaces increases, the number of installation surfaces becomes close to a circular shape, and thus, various changes such as 8, 12, etc. may be implemented in consideration of the area of the substrate.

The lower K part 120 is provided with a plurality of radiating fins 121 on its outer surface, and the radiating fins 121 protrude in a direction perpendicular to the inner mounting surface of the lower case part 120 have. In addition, the shape of the heat dissipation fins 121 is to be long in the height direction of the lower case part 120, and the heat dissipation fins 121 are arranged along the circumference of the lower case 120 at regular intervals.

The structure of the heat dissipation fin 121 makes it easy to extrude the case part 100, and the space between the heat dissipation fins 121 is formed to be elongated in the vertical direction so that the rising airflow generated when heat is released is The heat dissipation efficiency may be increased by allowing convection smoothly through the space between the radiating fins 121.

At least one port 160 for introducing an external wire 170 into the interior is provided on the upper surface of the upper case part 110, and both ends of the tilting frame 150 to allow the case part 100 to be tilted. It is coupled in a rotatable state to two opposite side surfaces of the upper case part 110.

The tilting frame 150 is coupled to the upper case part 110 by a bolt, and the tilting state of the case part 100 can be adjusted by loosening the bolt, and the tilting state can be fixed by tightening the bolt.

In addition, the upper side of the upper case part 110 collects the wires 170 connected to the port 160 in the center so that they can be connected to the ceiling wires (not shown), so that the case part 100 can be smoothly tilted. A fixed frame 180 is provided to enable it.

As described above, the case part 100 of the present invention may be manufactured by integrally manufacturing the upper case part 110 and the lower case part 120, and at most, the case part 100 may be manufactured into two parts and then combined. Therefore, compared to a method of manufacturing a conventional power supply unit housing, a connection frame and a plurality of lighting unit housings, it is possible to reduce the number of parts and reduce the working time required for assembly.

In addition, in the present invention, all components can be directly coupled to the case unit 100, which is, after connecting the power supply unit to the conventional power unit housing, covering the power unit housing, installing the lighting unit to the lighting unit housing, and then combining the cover or diffusion plate. In the state of performing the operation, the operation of coupling the power supply unit housing and the plurality of lighting unit housings to the connection frame can be omitted.

3 is a plan view of an LED lighting device for concentrated lighting according to a preferred embodiment of the present invention, and FIGS. 4 to 7 are cross-sectional views of a combination procedure as viewed from A-A section in FIG. 3.

Referring to FIG. 4, first, the power supply unit 200 is inserted into the case unit 100 through the light emitting port 190 of the case unit 100, and the inner upper surface of the upper case unit 110, which is the innermost, is Fix it. At this time, the wire 170 for supplying AC power to the upper case part 110 is withdrawn to the outside through the port 160, and is extended upward through the fixing frame part 180 from the outside.

Then, as shown in FIG. 5, the heat insulating part 300 is inserted through the light emitting port 190 of the case part 100, and the boundary between the upper case part 110 and the lower case part 120 Binds to

A plurality of stepped jaws 111 and 112 are provided up and down on the lower side of the upper case part 110, wherein the two stepped jaws 111 and 112 have a disc-shaped first and second insulating plate 310 having different diameters, respectively. The positions are different so that they can be combined, and the air layer 330 may be provided between the first insulating plate 310 and the second insulating plate 320 by spacing the two stepped jaws 111 and 112 in the height direction. .

In this way, by using the first heat insulating plate 310 and the second heat insulating plate 320 and the air layer 330 between the first heat insulating plate 310 and the second heat insulating plate 320, it is accommodated in the inner side of the upper case part 110. Heat of the LED accommodated in the power supply unit 200 and the lower case unit 120 may be blocked so as to prevent mutual conduction.

Although omitted in the drawings, a through hole is provided in a part of the first and second insulating plates 310 and 320, and a wire connecting the DC power of the power supply 200 to the electrode 123 of the substrate 122 is thermally insulated. It is to be connected through the portion 300.

Then, as shown in FIG. 6, the substrate 122 on which the LED 124 is mounted is inserted through the light emitting port 190 and fixed to the flat installation surface that is the inner surface of the lower case part 120. .

As described above, when the lower case portion 120 is viewed from the bottom, at least the inner portion has a polygonal shape corresponding to the number of installation surfaces, and the substrate 122 is fixedly installed on each of the installation surfaces.

At this time, the substrate 122 is installed so that the electrode 123 faces the heat insulating portion 300, and the light emitting surface of the LED 124 faces the center of the polygon viewed from the bottom surface of the lower case portion 120. Installed.

The substrate 122 on which the LED 124 is mounted is radiated by a plurality of radiating fins 121 disposed outside the lower case part 120, and as described above, the space between the radiating fins 121 is vertically A space is provided and it is configured to facilitate heat dissipation.

Then, as shown in FIG. 7, the reflective part 400 is inserted and fixed through the light emitting port 190.

The reflective part 400 is a polygonal plate having the same number of sides as the lower case part 120, and a plurality of reflective pocket parts 410 surround the substrate 122 in a state in which the reflective part 400 is coupled. The electrode 123 is exposed on the upper side, and the LED 124 is formed to be exposed to the lower side.

The reflective pocket part 410 has a curved surface, and the curvature at this time becomes a factor determining light distribution. That is, the light distribution can be adjusted by replacing the reflective pocket portion 410 with a different curvature. The plurality of reflective pocket portions 410 may have a convex curved surface toward the center of the reflective portion 400, and may be disposed to correspond to a plurality of flat inner surfaces of the lower case portion 120.

It is not necessary to separately manufacture a lighting unit housing as in the prior art using the reflective pocket unit 410 having such a configuration, and concentrated lighting is possible by controlling the light distribution of the LEDs 124 mounted on a plurality of substrates 122.

Accordingly, the present invention can reduce the cost of the LED lighting device, thereby facilitating commercialization.

FIG. 8 is a cross-sectional view in the direction B-B in FIG. 3.

Referring to FIG. 8, the reflective part 400 including the reflective pocket part 410 is not fixed to the inner side of the lower case part 120, but is fixedly installed to the reflective pocket part 410 with a bolt at the lower end. , It is possible to make the installation of the reflective pocket portion 410 easier.

Then, the cover 500 that blocks the light outlet 190 is combined. The cover 500 may be a transparent plate that transmits light or a diffusion plate that diffuses light.

9 is a schematic bottom view showing a main part of an LED lighting device for concentrated lighting according to the present invention.

9, the present invention is coupled to the lower case 120 providing a polygonal inner surface, the inner surface of the lower case 120, and directing light toward the center of the lower case 120 A substrate 122 on which the emitting LED 124 is mounted, and a radiating fin 121 protruding to the outside of the lower case part 120 and disposed at a predetermined interval along the circumference of the lower case part 120, It includes a reflective plate 400 that is provided integrally and reflects the light emitted from the LED 124 and emits it through the lower portion of the lower case 120.

Such a configuration substantially implements an LED lighting device for concentrated lighting including a plurality of lighting unit housings in a simple structure as possible, thereby reducing the number of parts and simplifying the assembly process, thereby increasing productivity and lowering the manufacturing cost.

In addition, a radiating fin 121 that directly radiates heat from the rear side of the substrate 122 is provided, and a structure opened up and down so that the space between the radiating fins 121 does not interfere with the convection of air formed up and down by heat is used. By doing so, it is possible to increase the heat dissipation efficiency.

10 is a cross-sectional view of an LED lighting device for concentrated lighting according to another embodiment of the present invention.

Referring to FIG. 10, the LED lighting device for concentrated lighting according to another embodiment of the present invention is separately manufactured so that a space 131 is provided between the upper case 110 and the lower case 120, and then the connection part ( 130). This is a separate configuration of the upper case 110 in which the power supply unit 200 is installed and the lower case 120 in which the reflective unit 400 and the substrate 122 are installed without using the insulation unit 300 in the previous embodiment. Thus, the heat of the power supply unit 200 and the substrate 122 is prevented from conducting each other.

In addition, the heat dissipation fins 121 provided on the side of the lower case 120 may be modularized to be coupled to the side of the lower case 120.

In the LED lighting device for concentrated lighting according to another embodiment of the present invention configured as described above, compared to the previous embodiment, the number of independent component parts increases, and it can be said that the time required for assembling them increases, but the power supply unit ( It is possible to prevent the occurrence of a mutual heat conduction problem between the 200 and the substrate 122 on which the LED 124 is mounted, and has an advantage in maintenance of the power supply unit 200 or the substrate 122.

In addition, by making the heat dissipation fin 121 as a module and manufacturing it as a separate part, the same heat dissipation fin 121 module can be used even with changes in the shape or size of the lower case 120, and the structure of the lower case 120 itself is simplified and manufactured There is a feature that makes it easier.

11 is an exploded perspective view of an LED lighting device for concentrated lighting according to another embodiment of the present invention, and FIG. 12 is a cross-sectional view of a combined state of FIG. 11.

Referring to FIGS. 11 and 12, respectively, the LED lighting device for concentrated lighting according to another embodiment of the present invention includes a case part 100, a power supply part 200, a reflection part 400, a substrate 122, and a cover 500. ), and in particular, a dimming control unit 600 provided at the lower side of the power supply unit 200 and exposed to the lower side through a through hole provided at the center of the reflective unit 400.

The case part 100 includes an upper case part 110 and a lower case part 120 integrally provided, and a plurality of radiating fins 121 are provided on the outer surface of the lower case part 120. The inner bottom shape of the case part 100 may have a polygonal flat installation surface, and the outer shape may have a circular structure. A plurality of flat inner surfaces of the lower case part 120 may be formed on the inner circumferential surface of the lower case part 120, and may be formed to be inclined away from the center of the lower case part 120 from top to bottom.

The case unit 100 is provided with a light outlet 190 on the bottom surface, and the power supply unit 200 is fixedly installed inside the case unit 100 through the light outlet 190, and according to an external control signal A dimming control unit 600 that controls power supplied to the substrate 122 from the power supply unit 200 is installed.

Then, the reflective part 400 is fixedly installed through the light emitting port 190.

The reflective part 400 does not use the reflective pocket part 410 in the previous embodiment, and has an inclined surface 420 corresponding to the number of flat installation surfaces of the case part 100, and the inclined surface 420 It is configured such that the light of the LED 124 is reflected from the bottom side and is emitted through the light exit 190. The plurality of inclined surfaces 420 may be formed so as to be inclined closer to the center of the reflective unit 400 from top to bottom, and the electrode 123 of the substrate 122 is exposed on the upper side and the LED 124 is on the lower side. It may be disposed to correspond to a plurality of flat inner surfaces of the lower case portion 120 to be exposed.

In addition, a through hole 430 is provided in the central portion of the reflective unit 400 so that the dimming control unit 600 can be exposed to the lower side of the reflective unit 400. This is to enable the dimming control unit 600 to easily receive an external wireless signal.

Then, the substrate 122 on which the LED 124 is mounted is fixedly installed on the inner flat installation surface of the lower case portion 120 on the lower side of the inclined surface 420 of the reflective portion 400.

Then, a cover 500 is installed on the light outlet 190. A plurality of holes 510 are provided in the central portion of the cover 500 so that a wireless signal can be easily transmitted to the dimming control unit 600.

As described above, the present invention may further include a dimming control unit 600 to facilitate dimming control from the outside, and each component can be mounted through the light exit 190 of the case unit 100 having a single structure, and manufacturing cost It can reduce the time required for the assembly process and increase productivity.

13 and 14 are a cross-sectional view and a perspective view of a reflector of an LED lighting device for concentrated lighting according to another embodiment of the present invention, respectively.

13 and 14, the LED lighting device for concentrated lighting according to another embodiment of the present invention is a case in which the upper case part 110 and the lower case part 120 described with reference to FIG. 2 are integrally provided. It has a part 100 and has a structure in which a plurality of radiating fins 121 are provided on the side of the lower case part 120.

In such a structure, the power supply unit 200 can be inserted and fixed from the lower side of the lower case unit 120 to the inside of the upper case unit 110. Of course, the dimming control unit is also Can be inserted and fixed together.

In such a structure, the reflective plate 400 is provided with an inclined surface 420 such that a reflective pocket portion 410 is provided to correspond to each substrate 122, and a plurality of forceps 440 are formed on the upper side of the inclined surface 420. It is a prepared structure. The central portion of the reflector 400 is provided with through holes 430 vertically. Since the structure and function of the through hole 430 has been sufficiently described in the previous embodiment, a more detailed description will be omitted.

The rigidity of the structure of the reflector 400 may be secured by the forceps 440, and the surface area of the reflector 400 itself may be increased so as to be more advantageous for heat dissipation.

15 is a perspective view of another embodiment of a reflector that can be applied to FIG. 13.

Referring to FIG. 15, it can be seen that the reflector 400 has a structure in which the through hole 430 is omitted from the structure of FIG. 14. This is because even when the through hole 430 is not provided in the reflective plate 400, a radio signal can be easily received by the dimming control unit even when a material that does not interfere with the radio signal is used.

It is apparent to those of ordinary skill in the art that the present invention is not limited to the above embodiments and can be variously modified and modified within the scope of the technical gist of the present invention. will be.

100: case portion 110: upper case portion
111,112: step 120: lower case portion
121: heat dissipation fin 122: substrate
123: electrode 124: LED
150: tilting frame 160: port
170: wire 180: fixed frame
190: light emission port 200: power supply
300: insulation part 310: first insulation plate
320: second insulation plate 330: air layer
400: reflective portion 410: reflective pocket portion
420: slope 430: through hole
440: strength 500: cover
510: Hall 600: dimming control unit

Claims (10)

A lower case portion 120 having a plurality of flat inner surfaces such that the light outlet 190 of the bottom surface has a polygonal shape;
An upper case part 110 located on the upper side of the lower case part 120 and accommodating the power supply part 200;
A substrate 122 coupled to a flat inner surface of the lower case unit 120 and on which an LED 124 is mounted so that the light emitting surface faces the central portion of the polygon;
A plurality of radiating fins 121 protruding and positioned along the circumference of the lower case part 120 and communicating with each of the spaces in the vertical direction of the lower case part 120;
A plurality of reflective pocket portions 410 coupled to cover the light outlet 190 of the lower case portion 120 and individually exposing the LEDs 124 mounted on the substrate 122 to the light outlet 190 side ) Is provided with a reflector 400; And
Includes; a cover 500 installed on the bottom surface of the lower case part 120 to diffuse light emitted through each of the reflective pocket parts 410,
The plurality of flat inner surfaces are formed perpendicular to the inner circumferential surface of the lower case part 120,
The reflective part 400 is a polygonal plate having the same number of sides as the lower case part 120,
The plurality of reflective pocket portions 410 are formed in a convex curved surface toward the center of the reflective portion 400 to surround the substrate 122, but the electrode 123 of the substrate 122 is exposed at the upper side, On the side, the LED 124 is formed in an exposed shape, and the LED lighting device for concentrated lighting is arranged to correspond to the plurality of flat inner surfaces.
delete The method of claim 1,
An LED lighting device for concentrated lighting further comprising an insulating part 300 for preventing heat conduction between the upper case part 110 and the lower case part 120.
The method of claim 3,
The heat insulation part 300,
It includes a first heat insulating plate 310 and a second heat insulating plate 320 disposed vertically, and an air layer 330 is formed between the first heat insulating plate 310 and the second heat insulating plate 320,
The first insulating plate 310 and the second insulating plate 320 are formed in a disk shape having different diameters,
An LED lighting device for concentrated lighting, characterized in that two steppeds 111 and 112 to which the first and second insulating plates 310 and 320 are coupled to each other are formed under the lower case part 120.
A lower case portion 120 having a plurality of flat inner surfaces such that the light outlet 190 of the bottom surface has a polygonal shape;
An upper case part 110 located on the upper side of the lower case part 120 and accommodating the power supply part 200;
A substrate 122 coupled to a flat inner surface of the lower case unit 120 and on which an LED 124 is mounted so that the light emitting surface faces the central portion of the polygon;
A plurality of radiating fins 121 protruding and positioned along the circumference of the lower case part 120 and communicating with each of the spaces in the vertical direction of the lower case part 120;
A plurality of inclined surfaces 420 that are coupled to cover the light outlet 190 of the lower case portion 120, and individually expose the LEDs 124 mounted on the substrate 122 toward the light outlet 190 A reflector 400 provided; And
Includes; a cover 500 installed on the lower surface of the lower case part 120 to diffuse light emitted through each of the inclined surfaces 420,
The plurality of flat inner surfaces are formed on the inner circumferential surface of the lower case part 120, and are formed to be inclined away from the center of the lower case part 120 from top to bottom,
The plurality of inclined surfaces 420 are formed to be inclined toward the center of the reflective part 400 from top to bottom, and the electrode 123 of the substrate 122 is exposed on the upper side, and the LED 124 is exposed on the lower side. ) LED lighting device for concentrated lighting arranged to correspond to the plurality of flat inner surfaces to be exposed.
The method of claim 1 or 5,
LED lighting apparatus for concentrated lighting further comprising a dimming control unit 600 for supplying to the substrate 122 by controlling the power of the power supply unit 200 according to an external control signal.
The method of claim 6,
The reflective part 400,
An LED lighting device for concentrated lighting, characterized in that a through hole 430 for exposing the dimming control unit 600 to the lower portion is provided.
The method of claim 7,
LED lighting for concentrated lighting, characterized in that a plurality of forceps 440 are provided on the upper surface of the reflective unit 400 to reinforce the reflective unit 400 and increase the surface area of the reflective unit 400 to facilitate heat dissipation. Device.
The method of claim 1,
The upper case part 110 and the lower case part 120 are connected by a connection part 130 so that a space part 131 is provided therebetween.
The method of claim 9,
The heat dissipation fin 121 is separately manufactured and coupled to the outside of the lower case unit 120, characterized in that the LED lighting device for concentrated lighting.

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