KR101693827B1 - Led lighting device having high efficiency radiating structure - Google Patents

Abstract

The present invention relates to an LED lighting device having a high efficiency radiating structure. The disclosed LED lighting device having a high efficiency radiating structure includes: an LED having an LED device installed on a base plate thereof and radiating light; a vapor chamber having one side installed on the base plate and transferring heat generated from the LED device through a heat medium stored through the base plate; and a radiating pin installed on the other side of the vapor chamber and emitting the transferred heat to the outside.

Description

TECHNICAL FIELD [0001] The present invention relates to an LED lighting device having a high-

The present invention relates to an LED lighting device having a high efficiency blowing port, and more particularly, to an LED lighting device having a high efficiency blowing device, and more particularly, to a vaporizing device having a vapor chamber formed by soldering a large amount of high heat generated in a narrow area, The present invention relates to an LED lighting device having a high-efficiency ventilation hole capable of rapidly radiating heat to the outside and discharging it to the outside to increase the heat radiation efficiency.

Generally, various light sources such as incandescent lamps, fluorescent lamps, mercury lamps, and sodium lamps are used for illumination lamps such as street lamps and parks installed in India, roads or parks. In recent years, compared with conventional incandescent lamps or fluorescent lamps, the efficiency of converting electric power into light is low, the power consumption is low, the lifespan of the lamp has a semi-permanent lifetime of 50,000 to 100,000 hours or more, .

LED (Light Emitting Diode) is about 20% of the input energy, so it has the best energy efficiency compared to incandescent lamps or fluorescent lamps that have been used by humans so far. It is an eco-friendly product that does not contain mercury. It is becoming a general trend.

The development of this technology has led to the production of COB (Chip On Board) LED, which has more than a few chips mounted on one LED package, and some manufacturers have produced output of more than 500W The product is also coming out.

In this trend, the demand for COB LEDs, which are advantageous for manufacturing cost and efficient, will be expanded in the future. Due to the fateful nature of LEDs, which account for about 80% of the input power, it is necessary to solve the heat dissipation problem in order to emit heat generated in such a narrow area have.

However, most of the heat dissipating members disclosed in the prior art are not suitable for rapidly diffusing and dissipating the high heat generated from the point light source due to high latent heat due to the characteristics of aluminum due to extrusion of aluminum or die casting. Thermal pad or thermal grease is used as a thermal interface material (TIM) at the contact portion between the LED and the heat sink. However, such a material has a thermal conductivity of 1 to 3 W / mK It is difficult to expect the normal output of the COB LED because the heat conduction performance is insufficient considering the narrow heat dissipation area of the COB LED.

In order to control the light distribution of the LED device, generally, a lens made of PC or PMMA material is used. However, a high output such as a COB LED (hereinafter referred to as LED) is likely to be easily deteriorated by a high temperature The lighting function may be lost.

Therefore, there is a need to improve this.

The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2012-0088381 (August 20, 2012, entitled "LED Illumination Device").

The present invention has been made in view of the above-described need, and it is an object of the present invention to quickly deliver a large amount of high heat generated in a narrow area like a high power LED device through a vapor chamber bonded by soldering to a base plate for fixing an LED device, And an object of the present invention is to provide an LED lighting device having a high-efficiency radiating opening capable of enhancing radiating efficiency.

Further, in the present invention, a large amount of heat is discharged to the outside through the radiating fin integrated with the aluminum brazing on the upper surface of the vapor chamber in a short time, and the angle of the desired light is obtained by using the reflecting cup having the reflecting surface instead of the synthetic resin material. And an object of the present invention is to provide an LED lighting device having a highly efficient ventilation opening that can prevent deterioration.

In addition, the present invention is characterized in that an area enhancing portion of concavo-convex shape is formed on the inner surface of a vapor chamber produced by an extrusion process, and a barrier member is inserted into both ends of the vapor chamber so as to receive a heating medium in contact with the area enhancing portion, So that it is possible to provide a vapor chamber having an excellent heat radiation performance.

In addition, the present invention provides an LED lighting device having a highly efficient ventilation hole that can easily adjust a light distribution angle by covering an LED element on a lower surface of a vapor chamber and adjusting a height of the reflector with various irradiation angles It has its purpose.

According to an aspect of the present invention, there is provided an LED lighting device including a high-efficiency ventilation hole, the LED lighting device including: an LED having an LED element mounted on a base plate to illuminate light; A vapor chamber provided at one side of the base plate and transmitting the heat generated from the LED element through the heating medium stored through the base plate; And a radiating fin provided on the other side of the vapor chamber and discharging the transferred heat to the outside.

Further, the base plate is fixed to the surface of the vapor chamber by an adhesive member.

The base plate may be formed by applying the adhesive member to the entire lower surface of the base plate and the contact surfaces of the vapor chamber corresponding to the base plate and fixing them by thermal welding. And is a lead-free solder which does not contain a lead component.

Further, the vapor chamber has a chamber body having both sides opened and having an accommodation space part for storing a heating medium therein; A shut-off bar member installed at both side open portions of the chamber body to block a part of the accommodation space portion; And a blazing part which seals a gap between the barrier member and the accommodation space to prevent leakage of the heat medium.

In addition, the vapor chamber is provided with a mounting hole for inserting and mounting the shut-off bar member to open both sides of the chamber body.

The chamber body is manufactured by an extrusion process, and the inner circumferential surface of the accommodating space portion is provided with an area enhancing portion for enhancing a contact area when circulating the heat medium stored therein.

The area enhancing portion may be formed in a triangular or rectangular shape repeatedly in the width direction of the chamber body into which the bar member is inserted. The area enhancing portion is formed continuously in the longitudinal direction when the chamber main body is extruded .

The heat dissipation fins are bent in the form of a square on the other side of the vapor chamber and are fixed by welding with alumina flux. The heat dissipation fins are arranged in one row at regular intervals or radially arranged with respect to the center do.

In addition, a reflector for collecting and reflecting the light of the LED element forward may be provided, and the reflector may be coupled after adjusting the angle of the light emitted from the LED element by the angle adjusting connector.

In addition, the angle adjusting and coupling unit may include a seating member for adjusting a light irradiation angle by adjusting the number of seats on the periphery of the LED device, And a coupling member inserted into the through hole of the seating member and the installation hole of the reflector to connect the reflector to the vapor chamber.

Further, the vapor chamber is fixedly installed by an installation part, and the installation part

A frame member supporting an edge of the vapor chamber and having a hole in which the radiating fin is inserted rearward; A frame member fixed to the frame member and protruding forwardly to support a periphery of the vapor chamber; A support member protruding backward from an edge portion of the frame member; And a mounting plate horizontally connected at an end of the supporting member and installed on the mounting structure.

The LED lighting device with a high-efficiency ventilation hole according to the present invention quickly transfers a large amount of high heat generated in a narrow area like a high-power LED device through a vapor chamber bonded by soldering to an LED element fixing base plate, It is possible to increase the heat radiation efficiency.

Further, in the present invention, a large amount of heat is discharged to the outside through the radiating fin integrated with the aluminum brazing on the upper surface of the vapor chamber in a short time, and the angle of the desired light is obtained by using the reflecting cup having the reflecting surface instead of the synthetic resin material. Deterioration can be prevented.

In addition, the present invention is characterized in that an area enhancing portion of concavo-convex shape is formed on the inner surface of a vapor chamber produced by an extrusion process, and a barrier member is inserted into both ends of the vapor chamber so as to receive a heating medium in contact with the area enhancing portion, It is possible to provide a vapor chamber having excellent heat radiation performance.

In addition, the present invention can easily adjust the light distribution angle by covering the LED element on the bottom surface of the vapor chamber and adjusting the height of the reflector with various irradiation angles.

1 is an exploded perspective view of an LED lighting device having a high-efficiency discharge opening according to an embodiment of the present invention.
FIG. 2 is an assembled perspective view of an LED lighting device having a high-efficiency discharge opening according to an embodiment of the present invention.
3 is a sectional view taken along the line AA in Fig.
4 is a sectional view taken along line BB of Fig.
5 is a perspective view showing a state in which an end portion of the vapor chamber according to the present invention is sealed with a shut-off bar member and a blazing portion.
FIG. 6 is a view illustrating a state in which an angle of the LED light is adjusted using an angle adjusting coupling unit according to an embodiment of the present invention.
7 (a) and 7 (b) are views showing the radiating fins according to the present invention in a radially arranged state.
FIG. 8 is a perspective view illustrating a state in which an LED lighting apparatus having a high-efficiency discharge opening according to an exemplary embodiment of the present invention is provided with a mounting portion.
Fig. 9 is an assembled perspective view of Fig. 8. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an LED lighting device having a highly efficient heat radiator according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is an exploded perspective view of an LED lighting apparatus having a high-efficiency ventilation hole according to an embodiment of the present invention, FIG. 2 is an assembled perspective view of an LED lighting apparatus having a high-efficiency ventilation hole according to an embodiment of the present invention, FIG. 3 is a sectional view taken along the line AA in FIG. 2, FIG. 4 is a sectional view taken along line BB of FIG. 2, FIG. 5 is a perspective view showing a state in which an end portion of the vapor chamber according to the present invention is sealed by a bar- 7A and 7B are views showing a state in which the radiating fins according to the present invention are arranged in a radial direction FIG. 8 is a perspective view of a state in which an LED lighting apparatus having a high-efficiency discharge opening according to an embodiment of the present invention is provided with a mounting portion, and FIG. 9 is an assembled perspective view of FIG.

Referring to FIGS. 1 to 9, an LED lighting apparatus having a high-efficiency ventilation opening according to an embodiment of the present invention includes an LED 100, a vapor chamber 200, and a radiating fin 300.

The LED 100 has a structure in which an LED 120 is mounted on a base plate 110 to emit light. The LED 100 uses an LED that generates a high output. LED 100) applies a COB (Chip On Board) LED.

The base plate 110 is made of a metal material or a ceramic material. Of course, any material may be used as long as the base plate 110 is made of a material having a high thermal conductivity.

The LED device 120 may be formed on the rectangular base plate 110 so as to protrude more than one side and be formed in a circular shape.

The vapor chamber 200 has a structure in which the base plate 110 is installed at one side and the heat generated in the LED elements 120 is transmitted through the heat medium stored through the base plate 110.

The base plate 110 is fixed to the surface of the vapor chamber 200 by an adhesive member 130.

The base plate 110 applies the adhesive member 130 to the entire lower surface of the base plate 120 and the contact surfaces of the vapor chamber 200 corresponding to the base plate 120 and fixes them by heat fusion.

Preferably, the adhesive member 130 does not contain flux, has a bonding temperature in the range of 120 to 150 degrees, and contains lead-free solder. The bonding member 130 does not contain a lead component and there is no fear of polluting the environment. The adhesive member 130 is excellent in tensile strength or more than the thermal conductivity (1 to 3 W / mK) of the conventional thermal interface material (TIM) that is less than the thermal conductivity (50 W / mK).

The vapor chamber 200 has a structure in which the base plate 110 is installed at one side and the heat generated in the LED elements 120 is transmitted through the heat medium stored through the base plate 110. Due to the temperature difference between the heat receiving side and the heat discharging side, the heating medium circulates and circulates, so that heat can be quickly transferred and discharged.

The vapor chamber 200 includes a chamber main body 210 having both sides opened and having a storage space for storing a heating medium therein and a chamber main body 210 installed on both sides of the chamber main body 210 to block a part of the accommodation space 212 And a blazing part 230 for sealing the gap between the barrier member 220 and the accommodation space 212 to prevent the leakage of the heat medium.

The vapor chamber 200 is provided with a mounting hole 240 through which the shut-off bar member 220 is inserted to be installed at both sides of the chamber body 210.

Four mounting holes 240 may be formed on one side and two on both sides.

The bar member 220 is a round bar and may be made of an aluminum or aluminum alloy material. Of course, if necessary, the barrier member 220 may be made of various materials and may be formed of a square bar or a polygonal bar.

The chamber body 210 may be made of an aluminum or aluminum alloy material.

The boss member 220 is inserted into the mounting hole 240 and fixed to the boss portion 230 to form a blazing portion 230 that welds the gap between the outer circumferential surface of the boss member 220 and the receiving space 212, Both sides of the chamber main body 210 can be completely closed and fixed while the heating medium is stored in the chamber 212. At this time, the heat medium may have a heat transfer efficiency of 100 times as much as that of aluminum.

It is preferred that the bar member 220 has a length equal to the width of the chamber body 210.

The chamber body 210 is manufactured by an extrusion process. The chamber body 210 is extruded by an extrusion process and then cut to an appropriate length and inserted into both sides of the cut chamber body 210 to form a blazing part 230 by welding to seal the chamber body 210 do.

The inner circumferential surface of the accommodation space 212 is provided with an area enhancement unit 250 for enhancing the contact area when the heat medium is circulated.

The area enhancement unit 250 may be repeatedly formed in the shape of a triangular or rectangular projection in the width direction of the chamber body 210 into which the barrier member 220 is inserted. In the present invention, the area enhancement unit 250 is shown in the form of a triangular projection.

The area enhancing portion 150 includes a protrusion 252 protruding toward the center of the chamber body 210 and a groove portion 254 recessed outwardly of the chamber body 210. The protruding portion 252 and the groove portion 254 are alternately formed to increase the contact area with the heating medium, so that the heat medium is circulated and the heat of the heating medium is quickly transmitted to improve the heat transfer efficiency.

The area enhancing portion 250 may be formed continuously in the longitudinal direction when the chamber body 210 is extruded.

4 and 5, the blazing part 230 is formed by welding between both sides of the shut-off bar member 220 and the inside surface of the accommodating space part 212 of the chamber body 210.

The protruding portion of the area enhancing portion 250 is removed from the inner surface of the chamber body 210 where the shut-off bar member 230 is disposed before forming the blading portion 230, ) Is preferably formed. The inner surface of the chamber main body 210 is made flat because the projections 252 and the grooves 254 of the area enhancing portion 250 disposed on both sides of the bar member 230 do not weld properly, There is a possibility that a failure occurs in the casing 230 and leakage of the heat medium may occur.

The heating fins 300 are provided on the other side of the vapor chamber 200 to discharge the heat transferred to the outside.

 The radiating fins 300 are bent in the form of a curve on the other side of the vapor chamber 200 and are fixed by welding with alumina flux.

The radiating fins 300 may be arranged at equal intervals in one row, or arranged radially with respect to the center.

7, the radiating fins 300 are arranged radially with respect to the center of the vapor chamber 200, and are installed in the square vapor chamber 200, so that they can be installed with different widths have. That is, the radiating fins 300 are formed to have a larger width as the vapor chamber 200 is installed at the corner.

7, the radiating fins 300 are arranged radially with respect to the center of the vapor chamber 200, and are installed in the circular vapor chamber 200 so as to have the same width .

 The LED illumination device having the high-efficiency discharge opening according to the present invention includes a reflector (reflector) 400 that collects and reflects the light of the LED element 120 forward.

The reflector 400 is coupled after adjusting the angle of the light emitted from the LED 120 by the angle adjusting unit 500.

A mirror surface is formed on the inner surface of the reflector 400 to reflect the light and guide the light to the front side.

The reflector 400 has various sizes according to the angle of the light distribution, and can be easily installed and replaced in the vapor chamber 200 by using the angle adjusting unit 500 according to circumstances.

The angle adjusting unit 500 includes a seating member 510 that adjusts a light irradiation angle by adjusting the number of seatings around the LED 120 so that the height difference of the reflection gates 400 is different, And a coupling member 540 inserted into the installation hole 530 of the through hole 520 and the reflection shade 510 and coupling the reflection shade 400 to the vapor chamber 200.

At the lower side of the reflector 400, a contact surface portion 410 which is curved inward and formed horizontally is formed. The mounting hole 530 is formed in the contact surface portion 410 as an arc-shaped groove. The contact surface portion 410 is seated and supported on the upper side of the seating member 510.

The seating member 510 is formed in a circular ring shape and has a predetermined thickness.

The seating member 510 may be formed of a rubber material or a synthetic resin material, but may be formed of a metal material or a ceramic material, if necessary.

The joining member 540 includes a bolt 542 welded to one side of the vapor chamber 200 and a through hole 520 formed through the through hole 520 of the seating member 510 and the installation hole 530 of the reflector 400 Bolt 95420) and includes a nut 544 that fixes the reflector 4000.

At this time, it is possible for the coupling member 540 to apply various other coupling members.

6, when the number of the seating members 510 is small, since the reflector 400 is installed close to the vapor chamber 200, the upper end of the reflector 400 is moved downward, The irradiation range of the light irradiated from the element 120 is widened. That is, since the width dimension of the upper side of the reflector 400 is fixed, the light irradiating range of the reflector 400 is broadened because the reflector 400 moves closer to the LED illuminator 120 as the reflector 400 moves downward.

6, when the number of the seating members 510 is large, the reflector 400 is installed far away from the vapor chamber 200, so that the upper end of the reflector 400 is positioned upward So that the irradiation range of the light emitted from the LED device 120 is narrowed. That is, since the dimension of the upper side of the reflection gutter 400 is fixed, the light irradiation range of the reflection gutter 400 is narrowed because the reflection gutter 400 moves away from the LED element 120 as the reflection gutter 400 moves upward.

The vapor chamber 200 is fixedly installed by a mounting portion 500.

The mounting portion 600 includes a frame member 610 supporting the edge of the vapor chamber and having a mounting hole 612 through which the radiating fin 300 is inserted rearwardly, A support member 630 protruding backward from the edge of the frame member 610 and a support member 630 extending horizontally from the end of the support member 630 And a mounting plate 640 connected to the mounting structure.

The frame member 610 has a structure in which one or more vapor chambers 200 are mounted on a rectangular plate and the radiating fins 3000 are inserted rearward through the mounting holes 612.

The frame member 620 is provided around the front surface of the frame member 610 and protrudes upward to support the side surface of the vapor chamber 200.

The support member 620 is installed rearward in a state in which the frame member 610 protrudes rearward at four corners but is not in contact with the radiating fin 300. [ The support member 630 is formed longer than the heat dissipating fin 300. A heat dissipation space portion for discharging heat generated in the heat radiation fin 300 is formed between the support members 630.

The mounting plate 640 is provided with a mounting structure for mounting an LED lighting device having a high-efficiency heat radiator according to the present invention in a mounting structure (not shown).

The high temperature generated in the LED device 120 can transfer a large amount of heat from the small area to the vapor chamber 200 through the base plate 110 and the adhesive member 130, The heat is rapidly spread from the internal heat medium to the entire area and a large amount of heat is discharged to the outside through the aluminum radiating fin 300 integrated with the vapor chamber 200 and aluminum blazing in a short time, An LED lighting device having a hot air balloon can exert excellent light output as compared with other products.

Therefore, the LED lighting device with the high-efficiency ventilation hole according to the embodiment of the present invention is characterized in that a large amount of high heat generated in a narrow area like the high-power LED device is transferred to the Vapor chamber bonded to the base plate for fixing the LED device by soldering So that the heat radiation efficiency can be increased.

Further, in the present invention, a large amount of heat is discharged to the outside through the radiating fin integrated with the aluminum brazing on the upper surface of the vapor chamber in a short time, and the angle of the desired light is obtained by using the reflecting cup having the reflecting surface instead of the synthetic resin material. Deterioration can be prevented.

Further, the present invention is characterized in that an area enhancing portion of concavo-convex shape is formed on the inner surface of the vapor chamber produced by the extrusion process, and both ends of the vapor chamber are closed to receive the heating medium in contact with the area enhancing portion, A vapor chamber can be provided. In addition, the present invention can easily adjust the light distribution angle by covering the LED element on the bottom surface of the vapor chamber and adjusting the height of the reflector with various irradiation angles.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the following claims.

100: LED 110: base plate
120: LED device 200: Vapor chamber
210: chamber body 212:
220: a bar member 230: a blading part
240: mounting hole 250: area increasing portion
252: protrusion 254:
300: radiating fin 310; Attachment:
320: Fringing part 400: reflector
410: contact surface part 500: angle adjusting engagement part
510: seating member 520: through-hole
530: installation hole 540: coupling member
542: bolt 544: nut
600: mounting part 610: frame member
612: mounting hole 620: frame member
630: Support member 640: Mounting plate

Claims (11)

An LED having an LED element mounted on a base plate for emitting light;
A vapor chamber provided at one side of the base plate and transmitting the heat generated from the LED element through the heating medium stored through the base plate; And
And a radiating fin provided on the other side of the vapor chamber and discharging the transferred heat to the outside,
The vapor chamber
A chamber body having both sides opened and having an accommodation space for storing a heating medium therein;
A shut-off bar member installed at both side open portions of the chamber body to block a part of the accommodation space portion; And
And a blazing part which seals a gap between the barrier member and the accommodation space to prevent leakage of the heat medium
Wherein the lighting device includes a high-efficiency ventilation opening.
. The method according to claim 1,
And the base plate is fixed to the surface of the vapor chamber by an adhesive member.
3. The method of claim 2,
Wherein the base plate has the adhesive member applied to the entire lower surface thereof and the contact surfaces of the vapor chamber corresponding to the base plate,
Wherein the adhesive member is a lead-free solder that does not contain flux, has a bonding temperature in the range of 120 to 150 degrees, and is free of lead components.
delete The method according to claim 1,
Wherein the vapor chamber is provided with a mounting hole for inserting and mounting the shut-off bar member at both side openings of the chamber body.
The method according to claim 1,
The chamber body is manufactured by an extrusion process,
Wherein the inner circumferential surface of the accommodating space part is provided with an area enhancing part for enhancing a contact area when circulating the heat medium stored therein.
The method according to claim 6,
Wherein the area enhancing portion is repeatedly formed in the shape of a triangle or a quadrangular prism with a width-wise shape of the chamber body into which the barrel member is inserted,
Wherein the area enhancing unit is formed continuously in the longitudinal direction when the chamber body is extruded.
The method according to claim 1,
The heat radiating fins are bent in a bent shape on the other side of the vapor chamber and are fixed by blazing welding with an alumina flux,
Wherein the heat dissipation fins are arranged at equal intervals in one row or arranged radially with respect to a center of the heat dissipation fins.
The method according to claim 1,
And a reflector for collecting and reflecting the light of the LED element forward,
Wherein the reflector is coupled after adjusting the angle of the light emitted from the LED device by the angle adjusting unit.
10. The method of claim 9,
Wherein the angle-
A seating member for adjusting the angle of light irradiation by adjusting the number of seats around the LED element so as to provide a difference in installation height of the reflector;
A coupling member inserted into the through hole of the seating member and the installation hole of the reflector to connect the reflector to the vapor chamber;
Wherein the lighting device includes a high-efficiency ventilation opening.
11. The method according to any one of claims 1 to 3 and 5 to 10,
Wherein the vapor chamber is fixedly installed by a mounting portion,
The mounting portion
A frame member supporting an edge of the vapor chamber and having a mounting hole into which the radiating fin is inserted rearward;
A frame member fixed to the frame member and protruding forwardly to support a periphery of the vapor chamber;
A support member protruding backward from an edge portion of the frame member; And
And a mounting plate horizontally connected to an end of the support member to be installed on the mounting structure;
Wherein the lighting device includes a high-efficiency ventilation opening.

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