KR102416407B1 - Lifting structure type led lighting fixture - Google Patents

Abstract

The present invention is a fixing bracket mounted on the ceiling panel; A lighting body having a lower opening-type internal space, an opening formed on the upper side of the space, and a plurality of ventilation holes disposed along the periphery of the space; an LED module disposed in the space of the lighting body; a heat sink disposed on the upper surface of the substrate of the LED module; an automatic elevating means installed in the fixing bracket and disposed in the open portion of the lighting body, the lighting body descending by the pressure acting on the liquid for pressure generation expanded by the heat conducted from the heat sink; and guide return means for connecting the lighting body to the fixing bracket, and returning the lighting body to its original position when the pressure acting on the pressure generating liquid is released while guiding the lowering operation when the lighting body is lowered by the automatic lifting means. Elevating type heat dissipation structure type LED lighting equipment that allows the lighting body to be lowered from the ceiling finishing panel to discharge internal heat by using a liquid for generating pressure that responds to heat generation of the LED module and changes in external temperature is about

Description

Elevating heat dissipation structure type LED lighting fixtures {LIFTING STRUCTURE TYPE LED LIGHTING FIXTURE}

The present invention is an elevating heat dissipation structure type in which the lighting body descends according to the change in external temperature and the heat generated during the operation of the LED module in the LED lighting equipment to create a gap with the ceiling finishing panel so that heat can be discharged through the gap. It is a technology related to LED lighting equipment.

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

A light emitting diode (LED) is one of the solid-state light emitting display devices that can be applied to various fields as well as monochromatic LEDs that emit light of the three primary colors of light: red (R), green (G), and blue (B). White light LEDs were developed.

In the field of application of these LEDs, the range of application is gradually expanding from general display devices to next-generation lighting equipment that can replace incandescent light bulbs, fluorescent lamps, and street lights as well as light emitting sources for backlights of displays.

Lighting equipment using LEDs (hereinafter referred to as LED lighting lamps), for example, LED street lamps, unlike street lamps of general fluorescent lamps, has a simple lighting circuit, does not require an inverter circuit and an iron-core ballast, consumes less power, and has a shorter lifespan. Because it is long, it has the advantage of low maintenance and repair costs.

However, the disadvantage of such an LED street lamp is that it causes deterioration and failure of characteristics due to thermal stress.

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

The technology that allows the LED lighting that generates such high heat to be cooled as quickly as possible,

Republic of Korea Utility Model Registration No. 20-0445592 (Registered on Aug. 7, 2009, hereinafter referred to as 'Document 1') 『Heat dissipation device for light fixtures』 is presented,

Document 1 discloses that in a heat dissipation device of a light fixture using a lamp as a light source, a lighting unit equipped with electrical devices for light emission is provided therein, an opening of a predetermined size is formed on one surface, and the light is emitted from the rear of the lighting unit. a lamp cover configured to dissipate heat; a heat sink made of a material with high thermal conductivity and is coupled to the opening to emit heat generated when the lamp emits light; a cooling fan provided at the rear of the heat sink and driven by a driving motor to discharge heat emitted from the heat sink to the outside; and a body part coupled to the lamp cover so as to surround the heat sink, a reinforcing member on which the cooling fan is installed, and a driving motor for driving the cooling fan installed. It is a technology related to a heat dissipation device of a light fixture that can drive and discharge high heat dissipated by a heat sink to the outside by a cooling fan and at the same time have a filter to minimize penetration of foreign substances such as dust inside.

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

Document 2 inserts a heat pipe into the irrigation pipe in order to efficiently cool the high heat generated by the high output of the LED in using an LED lighting lamp using a light emitting diode (LED) as a light source, and the irrigation pipe and the heat pipe It is a technology related to a cooling device for an LED lighting lamp that is configured to fill the space between them with a refrigerant so that the heat generated from the LED lighting is transferred to the coolant through a heat pipe in 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 is a case; LED mounted on the case; a main cooling unit mounted on one surface of the case to absorb heat generated from the LED and radiate heat at the same time; and the main cooling unit is spaced apart from the main cooling unit by a predetermined interval in the horizontal direction, installed on the same horizontal plane as the main cooling unit, and connected to the main cooling unit so that the main cooling unit can absorb the heat generated by the LED. and a sub cooling unit that supplies a cooling fluid to the cooling unit and cools the cooling fluid whose temperature has risen by circulating through the main cooling unit to naturally convection the cooling fluid, wherein the main cooling unit is disposed on one surface of the case laminated horizontal heat dissipation plates; Built in the horizontal heat dissipation plate, formed in a "⊃" shape along a path where a plurality of the LEDs are installed, both ends of each of a first supply pipe and a second supply pipe installed at a predetermined distance from the first supply pipe a circulation pipe connected to the sub cooling unit as a medium; and a plurality of vertical heat dissipation plates protruding from the plane of the horizontal heat dissipation plate, a plurality of vertical heat dissipation plates installed to be spaced apart from each other along the flow direction of the cooling fluid, and the vertical heat dissipation plate positioned at the front end of the horizontal heat dissipation plate is the horizontal heat dissipation The height increases toward the center of the plate, the height of the vertical heat dissipation plate positioned at the center of the horizontal heat dissipation plate is the same, and the vertical heat dissipation plate positioned at the rear end of the horizontal heat dissipation plate is the rear end of the horizontal heat dissipation plate. It is a technology related to an LED street light module with improved heat dissipation performance that allows the heat generated by the LED to be cooled and then radiated into the air by a configuration whose height is gradually lowered.

Document 1. Republic of Korea Utility Model Registration No. 20-0445592 (2009.08.07.Registration) Document 2. Korean Patent Registration No. 10-0970452 (Registered on Jul. 8, 2010) Document 3. Korean Patent Registration No. 10-1801065 (Registered on November 20, 2017)

The present invention displaces the position of the lighting body from the ceiling finishing panel according to the change in external temperature and the heat generated during light emission according to the operation of the LED module to discharge the heat through the gap, and after a certain period of time when the operation of the LED module is stopped An object of the present invention is to provide an elevating type heat dissipation structure type LED lighting fixture that allows the displaced lighting body to be returned to its original position.

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

Fixing bracket mounted on the ceiling finishing panel;

A lighting body having a lower opening-type internal space, an opening formed on the upper side of the space, and a plurality of ventilation holes disposed along the periphery of the space;

an LED module disposed in the space of the lighting body;

a heat sink disposed on the upper surface of the substrate of the LED module;

an automatic elevating means installed in the fixing bracket and disposed in the open portion of the lighting body, the lighting body descending by the pressure acting on the liquid for pressure generation expanded by the heat conducted from the heat sink; and

a guide return means for connecting the lighting body to the fixing bracket, and returning the lighting body to its original position when the pressure acting on the pressure generating liquid is released while guiding the lowering operation when the lighting body is lowered by the automatic lifting means;

characterized in that it consists of

Elevating heat dissipation structure type LED lighting fixture according to the present invention,

Using the pressure generating liquid that expands in response to temperature, the pinion gear meshed with the rack gear rotates. Through this operation, the bottom post can be moved down, and the ceiling finish panel generated through the lowering of the lighting body. It has the greatest effect of maximizing cooling efficiency and allowing the lighting body to return to its original position when the pressure is released from the pressure generating liquid by allowing the heat to be discharged through the gap.

1 is a cross-sectional configuration diagram of an installation state showing an elevating type heat dissipation structure type LED lighting device according to the present invention;
2 is a partial cross-section and enlarged three-dimensional configuration of main parts of FIG. 1;
3 is a partial cross-sectional configuration view for showing the lowering state of the lighting body by the automatic lifting means in FIG. 2;
4 and 5 are some cross-sectional diagrams to show the gear interlocking and coupling and separation between the inclined surface of each post and the corresponding inclined surface, thereby showing the operation of the lighting body ascending and descending;
6 is a schematic plan view showing the interlocking structure between the rack and the pinion gear by the pressure generating member.

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

Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the configuration shown in the embodiments and drawings described in the present specification is only the most preferred embodiment of the present invention and does not represent all the technical spirit of the present invention, so various equivalents that can be substituted for them at the time of the present application It should be understood that there may be water and variations.

1, the direction of the fixing bracket is called upper or upper, and the LED module side is lower or lower. to specify the direction.

1 to 6, the elevating type heat dissipation structure type LED lighting device according to the present invention,

It largely consists of a fixing bracket 10 , a lighting body 20 , an LED module 30 , a heat sink 40 , an automatic lifting means 50 , and a guide return means 60 .

Looking at each configuration,

The fixing bracket (10) is

As shown in Figures 1 and 2,

By being mounted on the ceiling finish panel (1),

It is made in the shape of a long plate from side to side, and holes are formed at both ends of the left and right sides, and bolts are inserted into these holes and fastened to the ceiling panel 1 , thereby being fixedly installed on the ceiling panel 1 .

In addition, although not shown, a vertical through hole is formed in the center of the fixing bracket 10 , and an electric supply line is introduced into the through hole, and the introduced electric supply line is electrically connected to the LED module 30 .

The lighting body 20 is

As shown in Figures 1 and 2,

Downward opening (開口) type inner space (21),

An opening 22 formed on the upper side of the space 21, and

A plurality of ventilation holes 23 disposed along the circumference of the space 21

It consists of a rectangular or circular housing structure comprising a.

At this time, on the lower side of the space part 21, a support part having a double step structure for mounting the LED module 30 may be formed, and a floodlight through which light emitted from the LED of the LED module 30 is transmitted ( 24) may also be formed with a support portion of a stepped structure for mounting.

And the opening 22 is formed to penetrate vertically in the central area of the upper surface of the lighting body 20 to communicate with the space 21, and each vent 23 is the opening 22. It is preferable to be arranged radially around the.

The LED module 30 is

As shown in Figures 1 and 2,

It is disposed in the space portion 21 of the lighting body 20 to provide lighting to the room,

It consists of a general LED lighting panel structure having a substrate and a plurality of LEDs mounted on the substrate.

The heat sink 40 is

As shown in Figures 1 to 5,

To be disposed attached to the upper surface of the substrate of the LED module (30),

It consists of a heat sink structure forming a multi-faceted surface by a plurality of heat radiation fins 41 erected to be arranged in a line at regular intervals.

As a result, the heat sink 40 serves as a medium to absorb the heat generated by the LED module 30 and transfer it to the relay fin 591 to be described later.

The automatic lifting means 50 is

As shown in Figures 1 to 6,

It is installed in the fixing bracket 10 and disposed in the opening 22 of the lighting body 20, and the lighting is performed by the pressure acting on the liquid for pressure generation expanded by the heat conducted from the heat sink 40. It consists of a structure in which the body 20 descends.

More specifically,

a housing 51 mounted on the lower surface of the fixing bracket 10 and having an internal receiving part 511;

A case 521 disposed in the accommodating part 511 of the housing 51 and having an internal accommodating part 521a, the accommodating part 521a disposed on the middle side of the accommodating part 521a of the case 521 ), a thin partition film 522 made of an elastic material that partitions left and right, and a liquid 523 for pressure generation that is filled on the left side of the partition film 522 in the accommodating part 521a of the case 521 A pressure generating member 52 having a,

a flange 53A disposed on the right side of the partition film 522 in the receiving portion 521a of the case 521;

A rack gear 53B connected to the flange 53A and exposed to the right side of the case 521,

A pinion gear (53C) intermeshing with the rack gear (53B),

A cylindrical top post 54 axially coupled to the pinion gear 53C and rotatably coupled to the fixing bracket 10 at an upper end and having an inclined surface 541 at the lower end;

A bottom post 55 disposed on the lower side of the top post 54 and having a corresponding inclined surface 551 in contact with the inclined surface 541 of the top post 54 at the upper end, and

The bottom post (55) lower end is fixedly coupled to the support body (56) which is fixedly installed on the lighting body (20)

is made including

Here, the housing 51 has a rectangular housing structure in which an accommodating part 511 is formed.

In addition, as the liquid 523 for pressure generating of the pressure generating member 52, wax, which is easily expanded by heat, etc. may be most suitable, and polymer sols and gels such as alcohol or polyethylene glycol ), etc., can be used in various liquid substances. In addition, it is preferable to use a degassed liquid to minimize residual bubbles in the generation of bubbles. In addition, when an electrolyte (salt, etc.) is added to pure water, the molecules are ionized and the energy required to collapse 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 film 522 may be made of silicone rubber or the like.

Since there is a risk that the edges and the center vicinity of the partition film 522 are damaged first due to rapid expansion, it is preferable that the partition film 522 reinforce the edges and the center vicinity due to the rapid expansion.

In addition, the pressure generating member 52 has a light-transmitting lens 524 disposed in the left sealing area of the case 521 and the pressure-generating liquid 523 through the light-transmitting lens 524 to concentrate energy to generate pressure. An energy concentrating device 525 for instantaneous volume expansion due to evaporation of the liquid 523 is further provided.

At this time, although the light-transmitting lens 524 is a convex lens, it is not limited thereto, and various forms can be applied if the light-transmitting lens 524 can transmit light, such as a planar type or a concave type, and the left wall of the case 521 . The light-transmitting lens 524 may be disposed in the open area to block it.

And the energy concentrating device 525 is made of a device capable of concentrating energy using a microwave, a laser, or the like. That is, the energy concentrating device 525 concentrates energy such as a laser on the pressure generating liquid 523 through the light-transmitting lens 524, and instantaneous volume expansion due to evaporation of the pressure generating liquid 523 ( pressure increase) and the transmission of shock waves pushes the partition film 522 . The rack 53B is moved to the right by the partition film 522 pushed in this way.

On the other hand, as shown in FIG. 2 , the automatic lifting means 50 includes a circular recess 57A formed to be concave in the center of the inclined surface 541 of the top post 54 , and a corresponding inclined surface of the bottom post 55 ( 551) It further includes a circular corresponding recess (57B) formed to be recessed in the center, and a circular rod (57C) inserted into the recess (57A) and the corresponding recess (57B). At this time, the rod 57C serves to guide the top post 54 so that it can vertically and linearly move when the bottom post 55 descends when it rotates.

On the other hand, the support 56 has a structure in which both ends are fixedly coupled to both inner walls of the space 21 in a form that crosses the space 21 of the lighting body 20, so that the top post 54 is lowered. When the support 56 and the lighting body 20 coupled thereto are descended together.

On the other hand, the automatic lifting means 50 is coupled to a support pin 58A connected to the end of the rack gear 53B, and an inner wall of one side of the receiving part 511 of the housing 51 and the support pin 58A. and a support block 58B disposed on the same horizontal line with each other, and a support return spring 58C fitted to the support pin 58A and having both ends supported by the end of the rack gear 53B and the support block 58B. further includes At this time, the support return spring 58C is elastically exerted toward the support pin 58A, so that when the liquid 523 for pressure generation expands, the rack gear 53B moves to the right while the pinion gear 53C rotates. At this time, the support return spring 58C is compressed by the rack gear 53B moved to the right, and when the pressure is released from the pressure generating liquid 523, the support return spring 58C is elastically restored The rack gear 53B is pushed to the left.

On the other hand, as in FIGS. 4 and 5 , the automatic lifting means 50 is connected to the housing 51 so that the upper end is in contact with the case 521 and the lower end is each heat dissipation fin 41 of the heat sink 41 . It further includes a heat-conducting member 59 having a plurality of relay pins 591 inserted therebetween. As a result, in the heat conduction member 59, each of the relay fins 591 is disposed between the heat dissipation fins 41, and the respective heat dissipation fins 41 are in surface contact with each other or are disposed adjacent to each other, so that each of the heat dissipation fins 41 ) is transferred into the case 521 of the pressure generating member 52 through the relay pins 591, and the pressure generating liquid 523 expands by the transferred heat.

Guide return means (60)

As shown in Figures 1 to 3,

Connect the lighting body 20 to the fixing bracket 10, but guide the lowering operation when the lighting body 20 is lowered by the automatic elevating means 50 when releasing the pressure acting on the pressure generating liquid For returning the lighting body 20 to its original position,

A guide hole 61 formed to penetrate vertically at the upper end of the lighting body 20,

A guide bolt 62 that passes through the guide hole 61 and is fastened to the fixing bracket 10, and

A guide return spring (63) fitted to the spiral portion of the guide bolt (62) and having both ends supported by the head of the guide bolt (62) and the upper and lower surfaces of the lighting body (20).

is made including

The guide return means 60 allows the lighting body 20 to be mounted on the fixing bracket 10, and in particular, when the bottom post 55 is lowered, the lighting body 20 is lowered together with the lighting body ( The upper end of 20) compresses the guide return spring 63, and when the pressure from the pressure generating liquid 523 is released, the top post 54 rotates by the support return spring 58C. It performs a function of helping the lighting body 20 to move to its original position by the elastic restoring force of the guide return spring 63 .

As a result, the guide return means 60 allows the rack gear 53B together with the support return spring 58C to return to its original position, thereby guiding the lighting body 20 to be placed in its original position.

Looking at the operating state of the elevating heat dissipation structure type LED lighting device according to the present invention having the above configuration,

When power is supplied to the LED module 30, the LED of the LED module 30 emits light, and the heat generated by the light emission passes through the heat dissipation fins 41 of the heat sink 40 to the heat conduction member ( 59) is transferred from the relay pin 591 to the case 521 of the pressure generating member 52, and the pressure generating liquid 523 is expanded by the transferred heat.

As shown in FIG. 5, the flange 53A and the rack gear 53B connected thereto are moved to the right by the liquid 523 for pressure generation expanded in this way, and at this time, the support return spring 58C is compressed. do. In addition, as the pinion gear 53C meshed with the rack gear 53B rotates, the top post 54 rotates together, thereby pushing the bottom post 55 downward. In addition, the guide return spring 63 is also compressed.

As a result, as the support 56 and the lighting body 20 connected thereto are descended by the lowering of the bottom post 55, the opening 22 of the lighting body 20 and the vent 23 are formed from the ceiling. As it is spaced apart from the finishing panel 1 , internal heat is discharged to the outside through the opening 22 and the vent 23 , so that heat is dissipated.

On the other hand, after a predetermined time elapses after the power supply to the LED module 30 is cut off, that is, when an appropriate time elapses until the expanded pressure generating liquid 523 is cooled, the pressure from the pressure generating liquid 523 has elapsed. As this is released, as the support return spring 58C is elastically restored, the rack gear 53B is moved to the left and returned to its original position, and at this time, the top post 54 is rotated, thereby causing the guide return spring 63 ) is elastically restored, the lighting body 20 is raised and returned to its original position.

As a result, the support 56 and the lighting body 20 connected thereto are raised by the elevation of the bottom post 55, and the opening 22 and the ventilation hole 23, which were opened, form the ceiling finishing panel ( 1) is blocked from the outside.

In the above description of the present invention, with reference to the accompanying drawings, "elevating type heat dissipation structure type LED lighting equipment" having a specific shape and structure has been mainly described, but the present invention is capable of various modifications and changes by those skilled in the art, and such modifications and Changes should be construed as falling within the protection scope of the present invention.

10: fixing bracket
20: lighting body
21: space part
22: open part
23: vent hole
24: floodlight
30: LED module
40: heat sink
41: heat dissipation fin
50: automatic lifting means
51: housing
511: storage unit
52: pressure generating member
521: case
521a: receptacle
522: partition membrane
523: liquid for pressure generation
524: light-transmitting lens
525: energy concentrator
53A: Flange
53B : rack gear
53C : pinion gear
54 : Top Post
541: slope
55: bottom post
551: corresponding slope
56: support
57A: recess
57B: corresponding recess
57C: Rod
58A: support pin
58B: support block
58C: Support return spring
59: heat conduction member
591: relay pin
60: guide return means
61: guide hole
62: guide bolt
63: guide return spring

Claims (2)

Fixing bracket (10) mounted on the ceiling panel (1);
Having a downward opening-type internal space 21 , an opening 22 formed on the upper side of the space 21 , and a plurality of vent holes 23 arranged along the periphery of the space 21 . lighting body 20;
an LED module 30 disposed in the space 21 of the lighting body 20;
a heat sink 40 disposed on the upper surface of the substrate of the LED module 30;
It is installed in the fixing bracket 10 and disposed in the opening 22 of the lighting body 20, and the lighting is performed by the pressure acting on the liquid for pressure generation expanded by the heat conducted from the heat sink 40. Automatic lifting means 50 having a structure in which the main body 20 descends; and
Connect the lighting body 20 to the fixing bracket 10, but guide the lowering operation when the lighting body 20 is lowered by the automatic elevating means 50 when releasing the pressure acting on the pressure generating liquid Guide return means 60 for returning the lighting body 20 to its original position;
made up of
The automatic lifting means 50 is
a housing 51 mounted on the lower surface of the fixing bracket 10 and having an internal receiving part 511;
A case 521 that is disposed in the accommodating part 511 of the housing 51 and has an internal accommodating part 521a, is disposed on the middle side of the accommodating part 521a of the case 521 and the receiving part 521a ), a thin partition film 522 made of an elastic material that partitions the left and right sides, and a pressure generating liquid 523 filled on the left side of the partition film 522 in the accommodating part 521a of the case 521 . A pressure generating member 52 having a;
a flange 53A disposed on the right side of the partition film 522 in the receiving portion 521a of the case 521;
a rack gear 53B connected to the flange 53A and exposed to the right side of the case 521;
a pinion gear (53C) intermeshing with the rack gear (53B);
A cylindrical top post 54 axially coupled to the pinion gear 53C and rotatably coupled to the fixing bracket 10 at an upper end and having an inclined surface 541 at the lower end thereof;
A bottom post (55) disposed on the lower side of the top post (54) and having a corresponding inclined surface (551) in contact with the inclined surface (541) of the top post (54) at the upper end;
The bottom post (55) lower end is fixedly coupled to the support body (56) which is fixedly installed on the lighting body (20)
Elevating heat dissipation structure type LED lighting fixture, characterized in that consisting of. delete

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