KR102011497B1 - Lifting structure of led lighting fixtures - Google Patents

Abstract

The present invention relates to a lifting heat dissipation structure of LED lighting fixtures comprising: a housing having an inner space unit of a down opening shape and an upper opening unit mutually connected to the space unit; an LED module arranged in a lower side of the space unit of the housing and formed of a plurality of LEDs and a substrate having the plurality of LEDs mounted in a lower surface thereof; a heat sink arranged in an upper surface of the substrate of the LED module; a cooling fin arranged in an upper side of the space unit of the housing to be arranged on the same vertical line as the opening unit of the housing; and an automatic lifting unit guiding the cooling fin to be lifted to the opening unit of the housing to expose to the outside or to return to an original position in accordance with temperature of conducted heat, wherein the heat generated from the LED module is conducted to the heat sink. Therefore, appearing operation of the cooling fin is possible through the opening unit of the housing in accordance with the temperature, and cooling efficiency of the cooling fin is maximized through contact with outside air.

Description

Lifting heat dissipation structure of LED lighting fixtures {LIFTING STRUCTURE OF LED LIGHTING FIXTURES}

The present invention is to expose the cooling fin to the outside according to the heat generated during the light emission according to the operation of the LED module in the LED lighting fixtures such as street lights and the like to maximize the cooling efficiency through contact with outside air It is a technique regarding a lifting type heat dissipation structure.

Today, various electrically stable light emitting devices have been developed due to the development of electric and electronic technologies, and a representative light emitting device is a light emitting diode (LED).

The light emitting diode (LED) is one of the solid state light emitting display devices, and may be applied to various fields as well as a monochromatic LED that generates light of three primary colors of light (R), green (G), and blue (B). White light LEDs have been developed.

The application field of the LED is gradually expanded to a next-generation lighting equipment that can replace incandescent lamps, fluorescent lamps, street lamps, as well as a light emitting source for the backlight of the display in a general display device.

Lighting fixtures using LEDs (hereinafter referred to as LED lighting lamps), for example, LED street lamps have a simple lighting circuit unlike street lamps of ordinary fluorescent lamps, do not require inverter circuits and iron ballasts, and consume less power and have a longer lifetime. Because of the long, it has the advantage of low maintenance and repair costs.

However, the disadvantage of such LED street light is that the characteristics deterioration and failure due to thermal stress occurs.

This is because the higher the power input to the plurality of LEDs to operate the LED, the more heat is generated, causing failure and deterioration of characteristics.

With the technology that cools LED lighting which generates such a high temperature as soon as possible,

Republic of Korea Utility Model Registration No. 20-0445592 (2009.08.07. Registered, hereinafter referred to as 'Document 1') `` The heat dissipation device of the light fixture '' is presented,

Document 1 is a heat dissipation device of a light fixture using a lamp as a light source, the lighting unit is provided with an electric device for the light emission of the lamp therein, an opening of a predetermined size is formed on one surface, the light is emitted from the rear A lamp cover configured to release heat; A heat sink made of a material having high thermal conductivity efficiency and coupled to the opening to emit heat generated when the lamp emits light; A cooling fan provided at a rear side of the heat sink and driven by a driving motor to discharge heat emitted from the heat sink to the outside; And a main body coupled to the lamp cover to surround the heat sink, and having a reinforcement member to which the cooling fan is installed, and a body part to which a driving motor to drive the cooling fan is installed. It is a technology related to a heat dissipation device of a light fixture that can drive the high heat radiated by the heat sink to the outside by the cooling fan and at the same time equipped with a filter to minimize the ingress of foreign substances such as dust inside.

As another technology, Korean Patent Registration No. 10-0970452 (registered on July 8, 2010, hereinafter referred to as 'Document 2') `` LED lamp cooling device '' is proposed,

Document 2 uses a light emitting diode (LED) as a light source, in order to efficiently cool the high heat generated by the high output of the LED to insert a heat pipe in the watering pipe, the watering pipe and the heat pipe It is a technology related to the LED lighting lamp cooling device configured to fill the space between the refrigerant with the heat generated from the LED lighting lamp to the refrigerant through the heat pipe within a short time.

As another technology, Korean Patent Registration No. 10-1801065 (registered on November 20, 2017, hereinafter referred to as 'Document 3') `` LED street light module with improved heat dissipation performance '' is proposed.

Document 3 describes the case; An LED mounted on the case; A main cooling unit mounted on one surface of the case to absorb heat generated from the LED and simultaneously dissipate heat; And spaced apart from the main cooling unit in a horizontal direction by a predetermined distance, and installed on the same horizontal plane as the main cooling unit, and connected to the main cooling unit, so that the main cooling unit absorbs heat generated from the LED. And a sub cooling unit for supplying a cooling fluid to a cooling unit and circulating the main cooling unit to cool the cooling fluid whose temperature has risen to naturally convection the cooling fluid, wherein the main cooling unit is provided on one surface of the case. Stacked horizontal heat dissipation plates; It is built in the horizontal heat dissipation plate, and is formed in a "⊃" shape along the path in which the plurality of LEDs are installed, both ends are provided with a first supply pipe and the second supply pipe spaced apart from the first supply pipe by a predetermined distance, respectively. A circulation pipe connected to the sub cooling unit by a medium; A vertical heat dissipation plate protruding from the horizontal heat dissipation plate plane, and a plurality of vertical heat dissipation plates spaced apart from each other along a flow direction of the cooling fluid, wherein the vertical heat dissipation plates positioned at the distal end of the horizontal heat dissipation plate are horizontal heat dissipation. The height is increased toward the center of the plate, the height of the vertical heat dissipation plate located at the center of the horizontal heat dissipation plate is the same, and the vertical heat dissipation plate located at the rear end of the horizontal heat dissipation plate is the rear end of the horizontal heat dissipation plate. It is a technology that the LED street light module with improved heat dissipation performance to cool the heat generated in the LED, and then radiate it into the air as the configuration becomes lower gradually.

Document 1. Registered Korean Utility Model No. 20-0445592 (Registered Aug. 7, 2009) Document 2. Republic of Korea Patent Registration No. 10-0970452 (registered on July 8, 2010) Document 3. Republic of Korea Patent Registration No. 10-1801065 (Nov. 20, 2017)

The present invention shifts the position of the cooling fins up and down according to the heat generated during the light emission according to the LED module and changes in the external temperature, but when the temperature rises, the cooling fins are exposed to the outside of the housing and the cooling fins are lowered when the temperature falls. It is a technique related to a liftable heat dissipation structure of an LED luminaire which is concealed into a housing.

In order to solve the above problems, the elevating heat dissipation structure of the LED lighting device according to the present invention,

A housing having a lower opening-type inner space and an upper opening interconnected with the space;

An LED module disposed on a lower side of the space part of the housing, the LED module including a plurality of LEDs and a substrate mounted on a bottom surface thereof;

A heat sink disposed on an upper surface of the LED module;

Cooling fins disposed on the upper side of the space portion of the housing to be arranged on the same vertical line with the opening of the housing; And

An automatic elevating unit configured to conduct heat generated from the LED module to the heat sink and to raise the cooling fins to the opening of the housing to expose the outside to the outside or to return them to their original positions according to the temperature of the conducted heat;

Characterized in that consisting of.

Lift type heat dissipation structure of the LED lighting device according to the present invention,

The vertical movement of the lifting rod is made by using the pressure generating liquid that expands in response to the temperature, and the vertical movement of the cooling fin is possible through this operation, and the cooling fin can enter and exit through the opening of the housing. The greatest effect is to maximize the cooling efficiency of the cooling fins through contact with the outside air.

1 is a cross-sectional configuration diagram showing a lifting type heat dissipation structure of the LED lighting device according to the present invention,
2 and 3 is a cross-sectional view showing the automatic lifting unit of the first embodiment,
4 and 5 are views for showing a process in which the cooling fin is raised by the automatic lifting unit of the first embodiment,
6 is a view for showing the guide means,
7 and 8 is a cross-sectional view showing the automatic lifting unit of the second embodiment,
FIG. 9 is an enlarged cross-sectional configuration view of main parts of “A” of FIG. 6;
10 and 11 are views for showing that the annular pillar and the vent hole is formed in the cover,
12 and 13 are views for showing that the stopper is further formed on the cover,
14 is a view showing a street lamp to which the LED lighting fixture according to the present invention is applied.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the configuration shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be water and variations.

Based on FIG. 1, the direction of the heat sink side will be specified as the lower side or the lower side, and the cooling fin side the upper side or the upper side.

As shown in Figure 1 to 14, the elevating heat dissipation structure (S) of the LED lighting apparatus according to the present invention,

The housing 10, the LED module 20, the heat sink 30, the cooling fins 40 and the automatic lifting unit.

Looking at each configuration,

Housing 10 is

As shown in FIG. 1,

In being connected to prop (1) of street light,

A lower opening type internal space 11, and

An upper opening 12 interconnected with the space 11

It consists of a housing structure including a.

In this case, the housing 10 may have a dome structure having a flat bottom and a convex top, which is an example and may be modified and changed in various forms.

And as shown in Figure 1, it may further include a diffuser plate 13 is coupled to the lower side of the space portion 11 for diffusing the light emitted from the LED module 20.

LED module 20 is

As shown in FIG. 1,

Is disposed on the lower side of the space portion 11 of the housing 10 to emit light to illuminate,

Multiple LEDs 21, and

Each of the LEDs 21 mounted on the lower surface of the substrate 22

It is made, including.

The LED module 20 of such a structure is turned on by receiving power from the outside and controlled to blink according to a predetermined time by a separate controller or the like.

The heat sink 30 is

As shown in Figures 1 and 4,

The heat sink structure is attached to the upper surface of the substrate 22 of the LED module 20 and has a multi-sided structure.

As a result, the heat sink 30 serves as a medium for absorbing heat generated from the LED module 20 and transferring the heat to the cooling fins 40.

Cooling fins 40

As shown in Figures 1 and 4,

For cooling the heat received from the heat sink 30,

Arranged on the upper side of the space portion 11 of the housing 10 to be arranged in the same vertical line with the opening portion 12 of the housing 10 to have a structure having a plurality of cooling surfaces made of a material such as aluminum alloy Is done.

Automatic lifting unit

Heat generated from the LED module 20 is conducted to the heat sink 30, and according to the temperature of the conducted heat, the cooling fins 40 are raised to the opening 12 of the housing 10 to external To guide the exposure or revert back to

First, in the present invention, the automatic lifting unit is composed of large first and second embodiments, the reference numeral for the automatic lifting unit of the first embodiment is '50A', the reference numeral for the automatic lifting unit of the second embodiment is It will be divided into '50B'.

1 to 6, the automatic lifting unit 50A of the first embodiment is

A heat conductor bracket 51a mounted on the heat sink 30,

A case 52a mounted on the bracket 51a and having an inner accommodating portion 521a,

A pressure generating liquid 53a filled in the receiving portion 521a of the case 52a,

A lifting rod 54a having a lower end inserted into an upper portion of the case 52a and disposed at the receiving portion 521a and having an upper end coupled to the cooling fin 40.

Is made of.

At this time, the bracket 51a may be coupled to the heat sink 30 by bonding with an adhesive or bolting with a bolt.

In addition, the case 52a may be formed of two powders divided up and down so as to be mutually coupled and separated, and is fixed by a bolt or the like fastened to the bracket 51a through a flange formed at a lower end thereof.

As the pressure generating liquid 53a, wax or the like which is easily expanded by heat is most suitable. In particular, a rubber (53a-1) to the non-contact from the pressure generating liquid (53a) is further provided while wrapping the end side located in the case (52a) in the lifting rod (54a). The rubber 53a-1 is deformed under pressure when the pressure generating liquid 53a is expanded while preventing the pressure generating liquid 53a from leaking to the outside, thereby making the lifting rod 54a more easily. It can be raised, and conversely, when the pressure is released, the lifting rod 54a can be lowered more easily by its elastic restoring force to help the home position.

Finally, as shown in FIGS. 3 and 5, not only heat generated when the LED 21 of the LED module 20 emits light but also pressure inflated by heat conducted to the bracket 51a according to a seasonal external temperature change. The lifting rod 54a is raised by the pressure acting on the molten liquid 53a. When the lifting rod 54a rises, the cooling fins 40 are exposed to the outside through the opening 12 of the housing 10 and come into contact with the outside air to cool the heat more quickly. To maximize.

As shown in Figure 7 and 8, the automatic lifting unit 50B of the second embodiment

A heat conductor bracket 51b mounted on the heat sink 30;

A case 52b mounted on the bracket 51b and having an inner accommodating portion 521b;

A thin partition membrane 55b made of an elastic material which is disposed on the stop side of the housing portion 521b of the case 52b and divides the housing portion 521b up and down;

A pressure generating liquid 53b filled in the lower side of the partition membrane 55b in the housing portion 521b of the case 52b,

A lifting rod 54b having a lower end inserted into an upper part of the case 52b and disposed at an upper side of the partition membrane 55b in the receiving part 521b, and having an upper end coupled to the cooling fin 40;

An elevating plate 56b coupled to a lower end of the elevating rod 54b and having a diameter corresponding to an inner wall of the accommodating portion 521b of the case 52b and contacting the partition membrane 55b.

Is made of.

At this time, the bracket 51b may be coupled to the heat sink 30 by bonding with an adhesive or bolting with a bolt.

In addition, the case 52b may be formed of two powders divided up and down so as to be mutually coupled and separated, and is fixed by a bolt or the like fastened to the bracket 51b through a flange formed at a lower end thereof.

The pressure generating liquid 53b may be suitable for wax, like the pressure generating liquid 53a of the first embodiment, and various liquids such as polymer sol and gel such as alcohol or polyethylene glycol. Substances can be used. It is also desirable to use degassed liquid to minimize residual bubbles in the generation of bubbles. In addition, when an electrolyte (salt, etc.) is added to pure water, molecules are ionized and energy required for collapse of the molecular structure of the liquid is reduced, so that bubbles can be formed with better efficiency, which is more preferable.

In addition, the partition membrane 55b may be made of silicon rubber or the like.

Since the partition membrane 55b may be damaged first at the edges and near the center due to the rapid expansion, the partition membrane 55b may preferably reinforce the edge and the vicinity of the center due to the rapid expansion.

Although the partition membrane 55b is an example of a membrane formed of an elastic material, the present invention is not limited thereto. The partition membrane 55b is formed in a shape in which a plate-shaped disk is reciprocated up and down. If the pressure can be delivered to the lifting plate 56b side, of course, various implementations are possible.

In addition, the lifting plate 56b preferably has a surface having a lower surface convex upward, which is more easy by increasing the contact area with the expanding surface of the partition membrane 55b when the partition membrane 55b is expanded. This is to ensure that the pressure transmission can be made.

Accordingly, as shown in FIG. 8, the pressure generating liquid expanded by heat conducted to the bracket 51b according to the change in external temperature according to the season as well as the heat generated when the LED 21 of the LED module 20 emits light ( The lifting rod 54b is raised as the partition membrane 55b is deformed, that is, expanded by the pressure acting on 53b). When the lifting rod 54b is raised, the cooling fins 40 are exposed to the outside through the opening 12 of the housing 10 and come into contact with the outside air to cool the heat more quickly. To maximize.

As shown in FIG. 7, a hole is formed in the receiving portion 521b of the case 52b so as to penetrate up and down on the bottom thereof, and a thermal diffusion sheet 57b is provided in the hole, and the thermal diffusion sheet 57b is formed of natural graphite. It can be manufactured into thin film by processing on the sheet, and it has high surface direction thermal conductivity and can quickly spread heat in the surface direction. In addition, it is possible to reduce the weight due to the light weight, excellent heat resistance and flame retardancy, and excellent electromagnetic shielding performance. Therefore, the thermal conductivity from the heat sink 30 to the pressure generating liquid 53b may be further increased.

7 and 8, the lifting rod 54b is compressed when the lifting rod 54b is raised, and then the lifting rod 54b is returned to its original position by the elastic restoring force when the pressure is released from the pressure generating liquid 53b. A return spring 58b is further provided between the receiving portion 521b of the case 52b and the lifting plate 56b.

On the other hand, the present invention as shown in Figures 4 to 6 is coupled to the cooling fin 40 to cover the opening 12 of the housing 10, the cooling by the automatic lifting unit (50A, 50B) It further includes a cover 60 to be raised with the pin 40.

The cover 60 has an arc-like structure so that rain water can flow down without being accumulated on the outer surface.

The cover 60 covers the open portion 12 of the housing 10 and is normally blocked, but when the cooling fins 40 are raised by the automatic lifting units 50A and 50B, the cover 60 rises together. By opening the opening 12 of the housing 10, not only the outside air may flow into the housing 10, but the cooling fins 40 exposed to the outside come into contact with the outside air.

On the other hand, the present invention as shown in Figure 6 is formed to be recessed in the guide pins 71 and the cooling fins 40, which are built on the upper portion of the brackets (51a, 51b) is inserted so that the guide pins (71) sliding It further comprises a guide means 70 made of a guide hole 72 to be.

The guide means 70 is preferably provided with two or more, and by the automatic lifting unit (50A, 50B) by the cooling fins 40 when the lifting up and down by supporting the guide, of the cooling fins 40 It helps to move up and down stably.

In addition, the guide pin 71 is connected to the upper end of the bracket (51a, 51b) is integrally connected to the upper end is inserted into the guide hole 72 formed in the cooling fin 40, the LED module The heat generated at 20 also helps to conduct the heat sink 30 and the brackets 51a and 51b from the guide pins 71 to the cooling fins 40.

To this end, the guide pin 71 may be made of a high thermal conductivity material such as copper, aluminum, brass.

Meanwhile, as shown in FIG. 9, the present invention is an example.

When the cooling fin 40 is exposed to the outside through the opening 12 of the housing 10 by the automatic lifting unit 50A, 50B, the cover 60 is an opening of the housing 10 ( Since the pests from the outside may be introduced through the opening 12 in the state of opening 12, the upper end is connected around the lower surface of the cover 60 to prevent this and the housing 10 It further comprises a net (80) that is connected to the bottom along the upper periphery of the open portion 12.

The net 80 is preferably made of a flexible material that can be deformed rather than metal. This is to allow the cover 60 to be folded when the cover 60 is lowered in the unfolded state by the cover 60 is raised.

In addition, the net 80 may be connected to the cover 60 and the opening 12 by an adhesive or the like, and a separate finishing material may be provided at upper and lower ends of the net 80, and the finishing material may be fastened by bolts or the like. To be able to be detachable to the cover 60 and the opening 12. This will facilitate the replacement of old or damaged net (80).

Therefore, even if the cover 60 is raised and the opening 12 of the housing 10 is opened, external pests cannot be caught by the net 80, and thus, into the space 11 of the housing 10. Can block pest infestation.

Meanwhile, as shown in FIGS. 10 and 11, the present invention may be used as another example that may replace the exemplary net 80.

When the cooling fin 40 is exposed to the outside through the opening 12 of the housing 10 by the automatic lifting unit 50A, 50B, the cover 60 is an opening of the housing 10 ( 12) in the state of opening the external pests through the opening 12 may be introduced, in order to prevent this cover 60 has a hollow cylindrical shape extending downward along the lower periphery An annular pillar 61 and a plurality of vent holes 62 are disposed along the outer circumferential surface of the annular pillar 61 and formed to penetrate in and out.

In this case, the cooling fins 40 are disposed in the annular column 61, and each of the vent holes 62 has a diameter such that pests can not enter or exit while allowing air to flow in and out. Do.

As a result, when the cover 60 is lowered, the annular pillars 61 are concealed into the housing 10. On the contrary, when the cover 60 is raised, the annular pillars 61 are exposed to the outside. (62) Moreover, the outside air can be distributed by exposing to the outside.

12 and 13, the cover 60 is further provided with a stepped stopper 63 extending in a horizontal direction along a lower circumference of the annular pillar 61, wherein the stopper 63 is formed. ) Has a larger diameter than the opening 10 of the housing 10. Therefore, when the cover 60 is raised, the stopper 63 is caught around the lower side of the opening 12 of the housing 10, thereby limiting a movement distance upward with respect to the cover 60. The detachment of the cover 60 from the opening 10 of the housing 10 is prevented.

In the above description of the present invention with reference to the accompanying drawings, a specific shape and structure of the "elevating heat dissipation structure of LED luminaires" mainly described, but the present invention can be variously modified and changed by those skilled in the art, such modifications And modifications should be construed as falling within the protection scope of the present invention.

S: lifting type heat dissipation structure
1: prop
10: housing
11: space part
12: opening part
13: diffuser plate
20: LED module
21: LED
22: substrate
30: heat sink
40: cooling fin
50A, 50B: Automatic lifting unit
51a, 51b: bracket
52a, 52b: case
521a, 521b: accommodating part
53a, 53b: liquid for pressure generation
53a-1: Rubber
54a, 54b: lifting rod
55b: partition membrane
56b: lifting plate
57b: thermal diffusion sheet
58b: return spring
60: cover
61: annular column
62: vent hole
63: stopper
70: guide means
71: guide pin
72: guide hole
80: net

Claims (5)

delete A housing (10) having a lower opening-type inner space (11) and an upper opening (12) interconnected with the space (11);
An LED module 20 disposed at a lower side of the space part 11 of the housing 10 and including a plurality of LEDs 21 and a substrate 22 mounted on the bottom surface thereof;
A heat sink 30 disposed on an upper surface of the substrate 22 of the LED module 20;
Cooling fins 40 disposed on the upper portion of the space portion 11 of the housing 10 to be arranged in the same vertical line with the opening portion 12 of the housing 10; And
Heat generated from the LED module 20 is conducted to the heat sink 30, and according to the temperature of the conducted heat, the cooling fins 40 are raised to the opening 12 of the housing 10 to external Automatic lifting units (50A, 50B) for guiding the exposure or repositioning;
Consisting of
The automatic lifting unit 50A
A heat conductor bracket 51a mounted on the heat sink 30,
A case 52a mounted on the bracket 51a and having an inner accommodating portion 521a,
A pressure generating liquid 53a filled in the receiving portion 521a of the case 52a,
A lifting rod 54a having a lower end inserted into an upper portion of the case 52a and disposed at the receiving portion 521a and having an upper end coupled to the cooling fin 40.
And the lifting rod 54a is lifted by a pressure acting on the pressure generating liquid 53a expanded by the heat conducted to the bracket 51a. .
A housing (10) having a lower opening-type inner space (11) and an upper opening (12) interconnected with the space (11);
An LED module 20 disposed at a lower side of the space part 11 of the housing 10 and including a plurality of LEDs 21 and a substrate 22 mounted on the bottom surface thereof;
A heat sink 30 disposed on an upper surface of the substrate 22 of the LED module 20;
Cooling fins 40 disposed on the upper portion of the space portion 11 of the housing 10 to be arranged in the same vertical line with the opening portion 12 of the housing 10; And
Heat generated from the LED module 20 is conducted to the heat sink 30, and according to the temperature of the conducted heat, the cooling fins 40 are raised to the opening 12 of the housing 10 to external Automatic lifting units (50A, 50B) for guiding the exposure or repositioning;
Consisting of
The automatic lifting unit 50B
A heat conductor bracket 51b mounted on the heat sink 30;
A case 52b mounted on the bracket 51b and having an inner accommodating portion 521b;
A thin partition membrane 55b made of an elastic material which is disposed on the stop side of the housing portion 521b of the case 52b and divides the housing portion 521b up and down;
A pressure generating liquid 53b filled in the lower side of the partition membrane 55b in the housing portion 521b of the case 52b,
A lifting rod 54b having a lower end inserted into an upper part of the case 52b and disposed at an upper side of the partition membrane 55b in the receiving part 521b, and having an upper end coupled to the cooling fin 40;
An elevating plate 56b coupled to a lower end of the elevating rod 54b and having a diameter corresponding to an inner wall of the accommodating portion 521b of the case 52b and contacting the partition membrane 55b.
Consists of, the lifting rod 54b is raised as the partition membrane 55b is deformed by the pressure acting on the pressure generating liquid 53b expanded by the heat conducted to the bracket 51b. Elevated heat dissipation structure of LED lighting fixtures.
The method of claim 2 or 3,
It is coupled to the cooling fins 40 to cover the opening 12 of the housing 10, further comprising a cover 60 to be raised together with the cooling fins 40 by the automatic lifting unit The elevating heat dissipation structure of the LED lighting fixture.
The method of claim 4, wherein
Further comprising a guide means (70) consisting of a guide pin (71) erected on the bracket and a guide hole (72) which is formed to be recessed in the cooling fin (40) and is inserted to slide the guide pin (71). Lifting heat dissipation structure of the LED lighting fixture, characterized in that.

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