KR100982897B1 - LED lighting device for indoor light and outdoor light - Google Patents

Abstract

The present invention relates to an LED lighting device, which comprises at least one LED module having a plurality of LEDs, a first heat sink coupled to an opposite side of the LED in the LED module, and coupled to one side of the first heat sink. And a power supply unit having a second heat sink, and a screw base connected to one end of the power supply unit via a rotating bracket, wherein the LED lighting device is screwed to the socket in the case. Even if is not aligned in the direct direction it is possible to easily adjust the direction of light irradiation, it is possible to respond appropriately to the installation environment and at the same time has the effect of securing the view of the operator, driver or pedestrian at night.

Description

LED lighting device for indoor light and outdoor light {LED lighting device for indoor light and outdoor light}

The present invention relates to an LED lighting device used for indoor and outdoor lighting, and more particularly, it is possible to easily adjust the direction of irradiation of light within the luminaire installed on the ceiling or prop, so that it can respond appropriately to the installation environment and At the same time, the present invention relates to an LED lighting device that can secure the view of the operator, driver or pedestrian at night.

Generally, streetlights installed on highways, roadways, sidewalks, and residential areas refer to lighting facilities installed along roadways, sidewalks, and sidewalks for street lighting and traffic safety. In addition, various kinds of work lamps are used to secure lighting for work in the dark or night work.

Such a lamp is equipped with a lamp using a mercury lamp, a fluorescent lamp or a sodium lamp as a light source, so that the adjacent area where the lamp is installed can be illuminated above a certain illuminance.

However, a lamp having a light source such as mercury lamp, fluorescent lamp or sodium lamp has a problem of high electricity consumption and short service life, particularly high maintenance cost and pollution.

Therefore, in recent years, LEDs having low power consumption and semi-permanent life characteristics have been applied as light sources for luminaires in order to improve illumination and reduce energy.

On the other hand, the conventional street lamp is formed so that the arm portion installed on the top of the pillar has an integral shape, the socket is located in the interior of the street lamp case fixed to the end of the arm portion, the lamp is screwed into this socket, The transparent window surrounding the lamp is mounted on the street light case.

By the way, most of the street lamps are not able to adjust the angle between the arm portion and the street light case, so that the direction of light irradiation can not be adjusted according to the ground gradient of the installation site, and the field of view of the driver or pedestrian in the location where the brightness is weak. There is a risk of an accident at night to interfere, there was a problem that the lighting effect is insufficient.

In addition, the LED lamps used in these streetlights mainly consists of a direct structure. That is, a structure in which a plurality of LEDs are arranged on a flat circuit board along the length direction and connected, and then covered with a cover of transparent material, emits light only in a direction perpendicular to the LED mounting surface of the circuit board. It is. Therefore, when the LED lamp is screwed into the socket in the street light case, the LED lamp is often not aligned in the direct direction. If the irradiation direction is displaced in this way, the average brightness of the road is lowered and is not uniform. It acts as a factor that can cause more accidents, there is a problem that seriously affects the safety of pedestrians or vehicles.

In addition, the conventional work lamps also do not have a structure that can selectively irradiate the light at the desired position, and if you need to change the irradiation direction frequently, the operator should have a hand in hand to illuminate the light, limiting the use and working There was a disadvantage that it is uncomfortable.

Accordingly, the present invention has been made to solve the above problems, by allowing the user to easily adjust the direction of light irradiation within the luminaire to be installed on the ceiling or props, it is possible to respond appropriately to the installation environment and at the same time the operator or It is an object of the present invention to provide an LED lighting device for indoor and outdoor lighting to ensure the visibility of the driver or pedestrian.

In order to achieve the above object, the LED lighting device according to the present invention, at least one LED module having a plurality of LEDs; A first heat sink coupled to the opposite side of the LED from the LED module; The main body is coupled to one side of the first heat sink, has a tubular shape and has a plurality of screw holes around the tip and a through protrusion extending outward from the outer circumferential surface at the center thereof, and being formed in a radial inside and out. A second heat sink having a plurality of fins and a plurality of screw grooves formed in the inner surface corresponding to the screw holes of the main body so as to be fixed along the tip of the main body, and a plurality of screw holes and a plurality of posts A power supply having a power supply device, the main body, the second heat sink, and a fixing plate which can be fixed to the first heat sink by a plurality of fixing screws; And it is characterized in that it comprises a screw base connected to one end of the power supply via a rotating bracket.

According to the present invention as described above, even when the LED lighting device is screwed into the socket in the case, even if the LED lighting device is not aligned in the direct direction, the light irradiation direction can be easily adjusted, so that it can be appropriately adapted to the installation environment. At the same time it is possible to secure the view of the operator, driver or pedestrian at night.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function is obvious to those skilled in the art or may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a front view of the LED lighting apparatus according to the first embodiment of the present invention, Figure 2 is an exploded perspective view showing a coupling relationship between the LED module and the first heat sink in the LED lighting apparatus according to the present invention, Figure 3 4 is an exploded perspective view schematically showing modified examples of the LED module in the LED lighting apparatus according to the present invention, FIG. 4 is a front view, a plan view, and a bottom view showing a main body of a power supply unit provided in the LED lighting apparatus according to the present invention; 5 is a plan view of a second heat sink provided in the LED lighting apparatus according to the present invention, Figure 6 is a plan view of a fixing plate provided in the LED lighting apparatus according to the present invention, and a state in which the power supply device is mounted 7 is a plan view of the rotating bracket provided in the LED lighting apparatus according to the present invention, and a view of half of them from a cutting surface, and a state in which the rotating bracket is mounted on the main body of the power supply unit. A plan view, and Figure 8 is a front view of the bottom surface assist screw base provided in the LED lighting apparatus according to the present invention and a view showing the spring contained therein.

First, as shown in Figure 1, the LED lighting apparatus according to the first embodiment of the present invention, at least one LED module 10 having a large number of LEDs, and the LED module 10 of the LED A power supply unit 30 having a first heat sink 20 coupled to an opposite side, a second heat sink 40 coupled to one side of the first heat sink 20, and a rotating bracket 60. The screw base 50 is connected to one end of the power supply unit 30 as shown.

Referring to FIG. 2, the LED module 10 covers an LED matrix 12 in which a plurality of LEDs 11 are arranged, a PCB 13 connected to one side of the LED matrix 12, and covers them. A covering lens cover 14 and a thermally conductive insulating pad 15 attached to the opposite side of the PCB in the LED matrix 12.

The PCB 13 is installed at one side of the LED matrix 12, and a plurality of through holes 13a are formed in the PCB 13 to correspond to the positions of the plurality of LEDs 11 arranged in the LED matrix 12. In this case, each through hole 13a corresponds to one LED 11 of the LED matrix 12 so that each LED 11 of the LED matrix 12 penetrates. In addition, the printed circuit of the PCB 13 is connected to the terminals of each LED (11).

The LED module 10 is attached to the flat portion 21 of the first heat sink 20 to be described later, a plurality of passing through the screw hole 140 of the flange 14a formed around the lens cover 14 The fixing screw 1 is fixed to the first heat sink 20.

The LED matrix 12 and the lens cover 14 may be formed in various forms, and a modification thereof is shown in FIG. 3, (a) shows an example of a square shape, and (b) shows a circular shape. An example is shown.

The sealing member 16 may be additionally installed between the flange 14a of the lens cover 14 and the first heat sink 20, thereby implementing a waterproof and dustproof effect to effectively protect the internal circuits and the LEDs. have. In addition, a plurality of position fixing columns 14b may be installed on the flange 14a of the lens cover 14. In this case, the position fixing columns 14b may be inserted into the sealing member 16 to seal the sealing members 16. It is preferable that a through hole 16a is formed at a corresponding position so that the position can be fixed. In addition, an insertion hole 21a into which the fixing column 14b is inserted may also be formed in the flat portion 21 of the first heat sink 20. Of course, the sealing member 16 should be formed with a screw hole 160 through which the fixing screw 1 can pass to correspond to the flange 14a of the lens cover 14.

The first heat sink 20 is a member for dissipating the excess heat transmitted from the LED module 10, the whole has a semi-circular cross-section, a plurality of fins (22) radially on the divided curved portion On the other hand, as described above, a plurality of screw holes 210 are formed in the flat portion 21 so that the LED module 10 can be fixed by the fixing screw 1. In addition, a plurality of screw holes 220 are formed in the longitudinal direction of the first heat sink 20 at one end portion in the longitudinal direction of the first heat sink 20 to which the power supply unit 30 to be described later is coupled. The power supply unit 30 is fixed by a screw (not shown).

In the first embodiment of the present invention, the power supply unit 30 coupled to one end portion of the first heat sink 20 in the longitudinal direction has a tubular shape having a substantially hemispherical shape, as shown in FIGS. 4 to 6. A main body 31 having a plurality of screw holes 310 and a through protrusion 32 extending outwardly from the outer circumferential surface in the normal direction at the center of the hemisphere; It has an annular shape, and corresponds to a plurality of fins 41 formed radially in and out and correspondingly with the screw holes 310 of the main body 31 so as to be fixed along the tip of the main body 31. A second heat sink 40 having a plurality of screw grooves 42 formed on the side thereof; At least one screw hole 350a and a plurality of posts 34 and a plurality of fixing screws (not shown), which are formed so that the power supply 33 can be connected and fixed by a plurality of fixing screws 2 and 3. It consists of a fixing plate 35 having a plurality of screw holes (350b, 350c) to be fixed to the second heat sink 40 and the main body 31 and the first heat sink (20).

The through projection 32 of the main body 31 constituting the main portion of the present invention is provided with a stepped portion 32a extending radially with respect to the through protrusion 32, and the stepped portion 32a and the main body 31 are provided. The rotary groove 32b is partitioned between the hemispheres of the side wall, and a stopper 32c for preventing the rotation of the screw base 50 to be described later within a predetermined range protrudes on the outer circumference of the stepped portion 32a.

The second heat sink 40 is capable of dissipating excess heat transmitted from the power supply device 33 accommodated in the main body 31 of the power supply unit 30. In addition, it is connected to the first heat sink 20 through the fixing plate 35 in the future, it is possible to dissipate excess heat transmitted from the LED module 10.

As the power supply device 33, a switching mode power supply (SMPS) or the like can be used to make a high voltage AC voltage applied from a power source into a low voltage DC power supply suitable for LED. Thus, since the low voltage DC voltage is applied, the risk of electric shock is significantly lowered, and the power consumption can be significantly reduced.

The fixing plate 35 is formed with a plurality of screw holes 350b and 350c along the circumferential end thereof, and the first screw holes 350b are arranged at a predetermined interval from each other only about a semicircle of the fixing plate 35. The second screw holes 350c are arranged between the first screw holes 350b and are arranged at predetermined intervals along the entire circumference. The first screw hole 350b is connected to the first heat sink 20 by a fixing plate 35 through a plurality of fixing screws (not shown) fastened to the screw hole 220 of the first heat sink 20. The second screw hole 350c is used when the fixing plate 35 is fixed to the second heat sink 40 and the main body 31 via a plurality of fixing screws (not shown). .

One side of the fixed plate 35 is provided with a post 34, so that a constant distance can be maintained between the power supply device 33 and the fixed plate 35. By maintaining a constant distance by the post 34 as described above, it is possible to prevent the lead wires coming from each component mounted on the substrate of the power supply device 33 to contact the fixing plate 35 and short-circuit. One end of the post 34 has a screw hole 340 in the axial direction of the post, so that the fixing screw 3 is fastened through the substrate of the power supply device 33.

Referring to FIG. 7, the rotating bracket 60 is a disc member having a through hole 61 at the center thereof, and a first wall portion 62 extending at right angles to the disc is formed at the outer circumferential end thereof. At least one pair of screw holes 620 (refer to FIG. 1) is formed in the wall portion 62, and is fixed to the screw base 50, which will be described later, via a fixing screw. In addition, an annular second wall portion 63 is formed between the first wall portion 62 and the through-hole 61. In the middle of the second wall portion 63, the fixing bracket of the screw base 50 to be described later ( 52 is provided with at least one insertion groove 63a into which the projection 53 is inserted.

Rotating bracket 60 may be composed of two halves to facilitate assembly, and each of the cut surfaces of these halves has fitting projections 64a on one side and fitting holes 64b on the opposite side, so that one half of the fittings are fitted. The projection 64a can be assembled simply by inserting the projection 64a into the fitting hole 64b of the other half. However, the present invention is not limited thereto and may be assembled by adhesion or the like.

One end of the power supply unit 30, that is, the screw base 50 connected to the periphery of the through protrusion 32 of the main body 31, as shown in Figure 8, the outer circumferential surface to be fastened to a conventional socket (not shown) The threaded portion 51 is formed on the side, and the fixing bracket 52 is provided on one side. The fixing bracket 52 is fitted into the rotating bracket 60 and is fixed. At least one pair of screw holes 520 are formed on the side wall, so that the screw holes 620 of the first wall part 62 of the rotating bracket 60 are fixed. The fixing bracket 52 is fixed to the rotating bracket 60 via a fixing screw (not shown) fastened to the bracket.

At least one protrusion 53 extends toward the center of the inner circumferential surface of the side wall of the fixing bracket 52, and the protrusion 53 is inserted into the insertion groove 63a when the fixing bracket 52 is fitted to the rotary bracket 60. By being inserted into), the fixing bracket 52 and the rotating bracket 60 is interlocked so that they can rotate relative to the power supply unit 30 together. A spring mounting groove 54 is provided at the center of the fixing bracket 52 to accommodate the spring 55 therein. The spring 55 imparts a predetermined elastic force between the fixing bracket 52 and the power supply unit 30 to prevent the power supply unit 30 to the LED module 10 from being arbitrarily rotated by shock or vibration. do.

Hereinafter, the assembly and rotation operation of the LED lighting device according to the first embodiment of the present invention configured as described above will be described.

First, to assemble the LED module 10, the PCB 13 is installed on one side of the LED matrix 12, the insulating pad 15 is attached to the opposite side, and cover them with a lens cover 14, then this lens cover The assembly covered with 14 is fixed to the first heat sink 20 via a plurality of fixing screws 1. In this case, the sealing member 16 may be interposed between the flange 14a of the lens cover 14 and the first heat sink 20.

Next, a plurality of fixing screws are attached to the first side of the fixing plate 35 while the opposite side of the fixing plate 35 on which the power supply device 33 is mounted on one side thereof is in contact with one end portion in the longitudinal direction of the first heat sink 20. The fixing plate 35 is fixed to the first heat sink 20 and the LED module 10 by fastening to the screw hole 350b.

Meanwhile, the screw base 50 is mounted on the main body 31 of the power supply unit 30, and the through hole 61 of the rotating bracket 60 surrounds the through protrusion 32 of the main body 31. Half parts of the rotating bracket 60 are fitted into the rotating groove 32b partitioned by the stepped portion 32a of the 32, and the side wall of the fixing bracket 52 of the screw base 50 is rotated by the rotating bracket 60. The protrusion 53 of the fixing bracket 52 is inserted into the insertion groove 63a of the rotation bracket 60 while being inserted between the first wall portion 62 and the second wall portion 63 of the rotating bracket 60, and then the fixing screws rotate. The power supply unit 30 and the screw base 50 are assembled by passing through the screw hole 620 of the first wall portion 62 of the bracket 60 and fastening to the screw hole 520 of the fixing bracket 52. . A spring 55 may be built in between the power supply 30 and the screw base 50, one side of which is accommodated in the spring mounting groove 54 of the fixing bracket 52, and the other side of which is It is fitted to one end of the through projection 32 of the main body 31.

When combining the two assemblies assembled in this way, one side of the second heat sink 40 is positioned opposite the screw base 50 of the power supply unit 30, the screw groove 42 of the main body 31 After fitting to the screw hole 310, in this state, the opposite side of the second heat sink 40 is brought into contact with the fixing plate 35 fixed to the first heat sink 20 and the LED module 10, and a plurality of fixing screws And pass through the second screw hole 350c of the fixing plate 35, the screw groove 42 of the second heat sink 40, and the screw hole 310 of the main body 31.

To describe the wiring for the power supply, the wire (not shown) connected to the contact terminal of the screw base 50 screwed to the socket (not shown) connected to the external power source is a spring mounting groove of the fixing bracket 52. It extends through the hole in the 54 and passes through the through projection 32 enclosed in the rotating bracket 60 to be connected to the power supply device 33 accommodated in the main body 31 of the power supply unit 30, AC power To the power supply 33.

In addition, the wire (not shown) extending from the power supply device 33 extends along the longitudinal direction of the first heat sink 20 through the hole of the fixing plate 35, and opens the hole of the first heat sink 20. Passed through and connected to the PCB 13 of the LED module 10, DC power is applied to the LED.

Finally, to describe the rotation operation that is a feature of the present invention, as described above, the through hole 61 of the rotating bracket 60 surrounds the through protrusion 32 of the main body 31 of the through protrusion 32. Half parts of the rotating bracket 60 are inserted into the rotating groove 32b partitioned by the stepped portion 32a, and the rotating bracket 60 is connected to the through protrusion 32 of the main body 31 of the power supply unit 30. You can rotate around.

On the other hand, the side wall of the fixing bracket 52 of the screw base 50 is sandwiched between the first wall portion 62 and the second wall portion 63 of the rotating bracket 60, the projection 53 of the fixing bracket 52 is After being inserted into the insertion groove 63a of the rotating bracket 60, the fixing screws pass through the screw hole 620 of the first wall portion 62 of the rotating bracket 60 and the screw hole 520 of the fixing bracket 52. By fastening to the), the fixing bracket 52 of the screw base 50 is fixed to the rotating bracket 60 so as to rotate relative to the main body 31 of the power supply unit 30 together with the rotating bracket 60.

Either clockwise or counterclockwise along the outer circumferential surface of the stepped portion 32a of the through protrusion 32 while the protrusion 53 of the fixing bracket 52 is inserted into the insertion groove 63a of the rotary bracket 60. When the motor rotates with the stopper 32c, the relative rotation is prevented and the motor cannot rotate outside the predetermined range.

Therefore, the LED lighting device according to the present invention, even if the LED lighting device does not fit in the direct direction when screwed into the socket in the case, LED module 10 via the rotating bracket 60 in the LED lighting device From the power supply unit 30 can be rotated relative to the socket, there is an advantage that can adjust the LED lighting device in the desired irradiation direction.

FIG. 9 is a front view of the LED lighting apparatus according to the second embodiment of the present invention, and FIG. 10 is a diagram showing an LED module, a first heat sink, and a fixing plate with the power supply unit and the screw base omitted from the LED lighting apparatus shown in FIG. It is sectional drawing which shows the coupling relationship between them.

9 and 10, in the LED lighting apparatus according to the second embodiment of the present invention, the power supply unit 30 and the screw base 50 are mounted in the longitudinal center of the first heat sink 20. The same as in the first embodiment except for the above.

That is, in the first embodiment, the power supply unit 30 is coupled to one end portion in the longitudinal direction of the first heat sink 20, but in the second embodiment, the power supply unit 30 may be installed. In addition to forming a mounting groove 23 having a circular cross section in the center of the heat sink 20 in the longitudinal direction, the flat plate 21 penetrates to the mounting groove 23 so that the fixing plate 35 can be fixed as will be described later. At least one screw hole 230 is formed, and the power supply unit 30 and the like are attached to the mounting groove 23 by the fixing screw 4.

As a result, the configuration of the fixing plate 35 is deformed, so that the first screw hole 350b (see FIG. 6) of the fixing plate 35 is not formed along the circumferential end of the fixing plate 35, but is formed in the center of the fixing plate 35. And a fixing screw 4 which is formed appropriately in the first hole sink 20 and inserted into the screw hole 230 in the flat portion 21 of the first heat sink 20, thereby allowing the main body 31 and the second body of the power supply unit 30 to be fastened. The fixing plate 35 fixed to the heat sink 40 is fixed to the first heat sink 20. Naturally, when the fixing plate 35 is fixed to the main body 31 and the second heat sink 40 via a plurality of fixing screws (not shown), the second screw hole 350c of the fixing plate 35 (see FIG. 6). This is used.

Hereinafter, the assembly of the LED lighting apparatus according to the second embodiment of the present invention configured as described above will be described in detail only the parts different from the first embodiment.

First, the screw base 50 is mounted on the power supply 30 as described above in the first embodiment, and then the power supply 33 is mounted on the opposite side of the screw base 50 of the power supply 30. The fixing plate 35 and the second heat sink 40 are coupled.

Subsequently, the opposite side of the fixing plate 35 on which the power supply device 33 is mounted on one side is positioned in the mounting groove 23 in the longitudinal center of the first heat sink 20 (the second heat sink is automatically A part of 40), and the fixing screw 4 is fastened to the first through hole of the fixing plate 35 through the screw hole 230 of the first heat sink 20 to fix the fixing plate 35 and the power supply unit. 30 is fixed to the first heat sink 20.

Next, as in FIG. 2, the PCB 13 is installed on one side of the LED matrix 12, and the insulating pad 15 is attached to the opposite side, and these are covered with the lens cover 14, and then the lens cover 14 is attached. The assembly covered with) is fixed to the first heat sink 20 via a plurality of fixing screws 1. In this case, the sealing member 16 may be interposed between the flange 14a of the lens cover 14 and the first heat sink 20.

Since the LED lighting device according to the second embodiment of the present invention assembled as described above is operated in the same manner as the LED lighting device of the first embodiment, a detailed description thereof will be omitted.

Therefore, the LED lighting device according to the present invention, when it is necessary to adjust the irradiation area of the light according to the conditions of the installation site or the working environment, the LED module 10 to the power supply unit via the rotating bracket 60 in the LED lighting device ( 30) can rotate relative to the socket, which has the advantage of adjusting the LED lighting device to the desired irradiation area.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a front view of an LED lighting device according to a first embodiment of the present invention.

2 is an exploded perspective view showing a coupling relationship between the LED module and the first heat sink in the LED lighting apparatus according to the present invention.

3 is an exploded perspective view schematically showing modified examples of the LED module in the LED lighting apparatus according to the present invention.

4 is a front view, a plan view and a bottom view showing the main body of the power supply unit provided in the LED lighting device according to the present invention.

5 is a plan view of a second heat sink provided in the LED lighting apparatus according to the present invention.

6 is a plan view of the fixing plate provided in the LED lighting apparatus according to the present invention, and a view showing a state in which the power supply device is mounted.

7 is a plan view of the rotating bracket provided in the LED lighting device according to the present invention, a view of half of them from the cutting plane, and a plan view of the rotating bracket mounted on the main body of the power supply unit.

8 is a front view and a bottom view of the screw base provided in the LED lighting apparatus according to the present invention, and a view showing a spring included therein.

9 is a front view of the LED lighting apparatus according to the second embodiment of the present invention.

FIG. 10 is a cross-sectional view illustrating a coupling relationship between the LED module, the first heat sink, and the fixing plate while omitting the power supply unit and the screw base in the LED lighting apparatus shown in FIG. 9.

Claims (10)

delete At least one LED module having a plurality of LEDs; A first heat sink coupled to the opposite side of the LED from the LED module; The main body is coupled to one side of the first heat sink, has a tubular shape and has a plurality of screw holes around the tip and a through protrusion extending outward from the outer circumferential surface at the center thereof, and being formed in a radial inside and out. A second heat sink having a plurality of fins and a plurality of screw grooves formed in the inner surface corresponding to the screw holes of the main body so as to be fixed along the tip of the main body, and a plurality of screw holes and a plurality of posts A power supply having a power supply device, the main body, the second heat sink, and a fixing plate which can be fixed to the first heat sink by a plurality of fixing screws; And Screw base connected to one end of the power supply via a rotating bracket LED lighting device comprising a. The through protrusion of the main body is provided with a stepped portion extending radially with respect to the through protrusion, and divides the rotary groove between the stepped portion and the main body, and the stopper protrudes from the outer periphery of the stepped portion. LED lighting device, characterized in that. 3. The fixing plate according to claim 2, wherein a plurality of screw holes are formed along the circumference of the fixing plate, and the first screw holes are arranged at intervals of only the semicircles of the fixing plate, and the second screw holes are the first screw holes. The first screw hole is used when the fixing plate is fixed to the first heat sink, and the second screw hole is used to fix the second heat sink and the main body. LED lighting device, characterized in that used when fixed to. According to claim 2, wherein the fixing plate is formed with a plurality of screw holes, the first screw hole is formed in the center of the fixing plate, the second screw holes are arranged at intervals from each other along the entire circumference of the fixing plate And the first screw hole is used when the fixing plate is fixed to the first heat sink, and the second screw hole is used when the fixing plate is fixed to the second heat sink and the main body. 6. A mounting groove is formed in the longitudinal center of the first heat sink, and at least one screw hole is formed to penetrate from the flat portion of the first heat sink to the mounting groove. And a fixing plate fixed to the second heat sink and the main body is fixed to the first heat sink by fastening the fixing screw to be inserted into the first screw hole. According to claim 3, The rotating bracket has a through hole formed in the center to surround the through projections of the main body of the power supply, the outer peripheral end is formed with a first wall portion extending at right angles, the first wall portion At least a pair of screw holes are formed, an annular second wall portion is formed between the first wall portion and the through hole, and at least one insertion groove is provided in the middle of the second wall portion. The screw base has a threaded portion formed on an outer circumferential surface thereof, and includes a fixing bracket on one side thereof, and at least one pair of screw holes are formed on the side wall of the fixing bracket, so that the screw hole of the first wall portion of the rotating bracket At the same time that the fixing bracket is fixed to the rotating bracket via a fixing screw that is fastened, At least one protrusion extends toward the center on an inner circumferential surface of the side wall of the fixing bracket, and the protrusion is inserted into the insertion groove when the fixing bracket is fitted to the rotating bracket. 8. The LED lighting apparatus according to claim 7, wherein the rotating bracket is composed of two halves, each of which has a fitting protrusion on one side of the cutting surface and a fitting hole on the opposite side, and is fitted to the fitting protrusion into the fitting hole. According to claim 7, LED lighting device, characterized in that the center of the fixing bracket has a spring mounting groove for receiving the spring. delete

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