CN201396724Y - Automobile LED headlight heat pipe cooling device - Google Patents
Automobile LED headlight heat pipe cooling device Download PDFInfo
- Publication number
- CN201396724Y CN201396724Y CN2009200459888U CN200920045988U CN201396724Y CN 201396724 Y CN201396724 Y CN 201396724Y CN 2009200459888 U CN2009200459888 U CN 2009200459888U CN 200920045988 U CN200920045988 U CN 200920045988U CN 201396724 Y CN201396724 Y CN 201396724Y
- Authority
- CN
- China
- Prior art keywords
- heat
- evaporimeter
- led
- heat pipe
- lampshade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000001816 cooling Methods 0.000 title abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000010992 reflux Methods 0.000 claims description 9
- 238000005213 imbibition Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000009833 condensation Methods 0.000 abstract description 2
- 230000005494 condensation Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 3
- 230000007704 transition Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model discloses an automobile LED headlight heat pipe cooling device, which belongs to the application field of LED lighting technology and comprises a semi-enclosed lamp housing, a lamp shade as well as an LED lamp body arranged in the cavity of the lamp housing and welded on a metal circuit board. The automobile LED headlight heat pipe cooling device is characterized in that the metal circuit board is vertically mounted and another wall surface of the metal circuit board corresponding to the LED lamp body is connected with an evaporator; the top part of the evaporator is communicated with a condenser closely sticking to the lamp shade through a steam transmission pipeline; while the condenser is communicated with a liquid container at the bottom part of the evaporator througha sealed condensing back flow pipeline to form a return circuit heat pipe system with vapor-liquid circulating and transition. The return circuit heat pipe can be used as a high efficiency heat transmission system to be capable of quickly exhausting and dispersing the heat generated when high-power LED lamp body works, thus guaranteeing the LCD to work within a proper temperature scope, effectively improving the luminous efficiency thereof when adopted as the automobile headlight, and leading the lampshade to be capable of absorbing the heat so as to have the effects of snow removing and icemelting as well as air condensation preventing.
Description
Technical field
The utility model relates to a kind of LED heat pipe heat radiation structure, is in particular a kind of automobile LED headlamp heat-pipe radiating apparatus, belongs to LED lighting engineering application.
Background technology
Compare with conventional light source, led light source has that high efficiency, long-life, energy-conserving and environment-protective, response time are short, volume little in light weight, be beneficial to advantages such as automobile appearance design, in other Vehicular lamps except that headlamp, be used widely.The LED headlamp must use great power LED as light source, yet more powerful LED also will give out more heat.Heat concentrates in the small-sized chip, and chip temperature raises, and will reduce the performance of LED, shortens the life-span of LED.Therefore heat dissipation problem is that great power LED is used for one of major technique bottleneck that car headlamp faces, and the method that generally adopts is outer radiation fin or use general heat pipe at present.The compact Layout of light fixture does not allow to use large-area fin, thereby the method for outer radiation fin can not satisfy the radiating requirements of great power LED sometimes.Because performance sharply descends after the general heat pipe bending, the heat radiation position is usually at rear portion, lamp chamber when therefore using the general heat pipe heat radiation, and rear portion, lamp chamber is near engine, lamp chamber rear part temperature is higher during engine operation, general heat pipe is unfavorable for heat radiation, so can not solve the heat dissipation problem of great power LED in the headlamp effectively.In addition, when car headlamp used LED as light source, because the LED operating temperature is low, the absorbent radiations heat energy of the lampshade of headlamp institute was few, makes that the temperature of lampshade is lower.Under cold snap, the air in the lamp chamber condenses at lampshade inner surface easily on the one hand like this, and the outer surface of lampshade also occurs accumulated snow easily even freezes on the other hand.Existing technical scheme also fails to address these problems well, is unfavorable for being extensive use of of LED car headlamp.
Summary of the invention
The purpose of this utility model is: a kind of automobile LED headlamp heat-pipe radiating apparatus is provided, to overcome the defective of conventional art at car headlamp utilizing high power LED lamp body, its high temperature that influences luminous efficiency can be with the high-powered LED lamp body running time is arranged fast and effectively loose, and those heat energy are transmitted external air by the gas-liquid cyclic transformation maybe need the headlamp lampshade that heats.
The purpose of this utility model, will realize by following technical solution:
A kind of automobile LED headlamp heat-pipe radiating apparatus, comprise semi-enclosed lamp housing, lampshade and be arranged at the LED lamp body that is welded in the lamp housing lamp chamber on the metallic circuit, its design feature is: this metallic circuit is for vertically to assembling, and its another side wall with respect to the LED lamp body connects an evaporimeter, the top of this evaporimeter is connected by vapor transmission pipeline and the condenser of being close to lampshade, and this condenser is connected by the liquid reservoir of condensing reflux pipeline and base of evaporator, forms the loop heat pipe system of a sealing and gas-liquid cyclic transformation.
Further, described automobile LED headlamp heat-pipe radiating apparatus, wherein this evaporimeter is dull and stereotyped cavity structure, the top is provided with the steam collection chamber, inside is provided with the imbibition core that is connected as a single entity, pass straight through to below the interior liquid level of liquid reservoir, and be provided with the baffle plate that an isolated steam enters liquid reservoir between described liquid reservoir and the evaporimeter.
A nearlyer step ground, described automobile LED headlamp heat-pipe radiating apparatus, wherein the inner wall surface that is connected with metallic circuit of this evaporimeter is provided with plural spaced fin, and formation steam discharge channel is communicated to the evaporimeter top between the fin.
Further, described automobile LED headlamp heat-pipe radiating apparatus, wherein this condenser contacts for part with lampshade inner surface.
Further, described automobile LED headlamp heat-pipe radiating apparatus, wherein this lamp housing outer surface is coated with heat-barrier material, or shell itself is made by heat-barrier material.
After being used for automobile LED headlamp heat-pipe radiating apparatus and dropping into application implementation of the utility model design, the beneficial effect that it had is embodied in:
By using loop heat pipe as the efficient heat transfer system, the heat that produces in the time of can be with high-powered LED lamp body running row rapidly looses, and has guaranteed that LED is operated within the suitable temperature range, has effectively improved its luminous efficiency as car headlamp; And loop heat pipe is sent to condenser near lampshade with heat energy, makes lampshade can absorb those heat energy and has the snow removing ice-melt and prevent the effect of air condensation; Adopt the higher material coating of thermal insulation in addition or make lamp housing, the high temperature that has produced when effectively having completely cut off engine running has also further reduced the environment temperature that the inner LED in lamp chamber works.
Description of drawings
Fig. 1 is the structure cross-sectional schematic of car headlamp of the present utility model;
Fig. 2 is the A-A schematic cross-section of Fig. 1;
Fig. 3 is the B-B schematic cross-section of Fig. 1;
Fig. 4 is the part-structure cross-sectional schematic of evaporimeter of the present utility model and liquid reservoir;
Fig. 5 is the C-C schematic cross-section of Fig. 4;
Fig. 6 is the D-D schematic cross-section of Fig. 4.
The implication of each Reference numeral is in the above accompanying drawing:
1-LED lamp body, 2-metallic circuit, 3-evaporimeter, 4-condenser, 5-vapor transmission pipeline, 6-condensing reflux pipeline, 7-lampshade, 8-fin, 9-steam discharge channel, 10-liquid reservoir, 11-imbibition core, 12-lamp chamber, 13-working medium, 14-steam collection chamber, 15-lamp housing, 16-baffle plate
The specific embodiment
In order further to be convenient to understand architectural feature of the present utility model and technology contents, a preferred embodiment of the present utility model is done further explanation in detail and without limitation below in conjunction with the embodiment accompanying drawing.
The loop heat pipe cooling system that is used for the automobile LED headlamp as shown in Figure 1, comprise great power LED lamp body 1, metallic circuit 2, evaporimeter 3, condenser 4, vapor transmission pipeline 5, condensate liquid reflux pipeline 6, lampshade 7, liquid reservoir 10, lamp chamber 12 and lamp housing 15, wherein:
This lamp housing 15 is a semi-closed structure, and is only empty thoroughly in its one side towards the automobile direction of advance, and can join with lampshade 7 on this saturating empty face, to form a detachable sealed light chamber 12 of opening.
In above-mentioned lamp chamber 12, this metallic circuit 2 to assembling, is welded with a great power LED lamp body 1 (in the present embodiment, great power LED lamp body quantity is 9, becomes 3 * 3 array distribution) for vertically at least on it.This evaporimeter 3 fits together with the wall ways of connecting with the another side of metallic circuit 2 with respect to great power LED lamp body 1, and this condenser 4 is connected with the edge of lampshade 7 by the connected mode that heat conductive silica gel or part contact.The liquid reservoir 10 of this condenser 4, evaporimeter 3 and bottom thereof is connected by vapor transmission pipeline 5 and condensing reflux pipeline 6, has formed a loop heat pipe system that seals and can realize the gas-liquid cyclic transformation.
As shown in Figure 2, this condenser 4 is connected with the edge of lampshade 7 by heat conductive silica gel or other thermally coupled modes; As Fig. 3～shown in Figure 6, this evaporimeter 3 is flat, and the side inner wall surface that links to each other with metallic circuit 2 of evaporimeter 3 has fin 8, is used to form steam discharge channel 9, and the top of steam discharge channel 9 is provided with steam collection chamber 14.Evaporimeter 3 bottoms are connected with liquid reservoir 10, are used to preserve excess liquid working medium 13, and can provide liquid working substance for evaporimeter in the course of the work when liquid working substance has little time to reflux.Evaporimeter 3 and liquid reservoir 10 internal placement have the imbibition core 11 that is connected as a single entity, imbibition core 11 constitute by porous material or for other can adsorptive liquid the structure of matter of working medium, be provided with baffle plate 16 be used for avoiding evaporating steam inflow liquid reservoir 10 in the device 3 between evaporimeter 3 and the liquid reservoir 10.Condensate liquid reflux pipeline 6 is connected with the side of liquid reservoir 10, and vapor transmission pipeline 5 is drawn from the steam collection chamber 14 on evaporimeter 3 tops, and links to each other with condenser 4.Evaporimeter 3, vapor transmission pipeline 5, condenser 4, condensate liquid reflux pipeline 6 and liquid reservoir 10 are formed the loop of a sealing.
The heat that produces during 1 work of great power LED lamp body passes to the wall with fin 8 that reaches evaporimeter 3 by metallic circuit 2, liquid working substance in the imbibition core 11 is evaporated rapidly, the steam that produces arrives steam collection chamber 14 by steam discharge channel 9,, be condensed into liquid and release heat after vapor transmission pipeline 5 arrives condensers 4.Coagulating liq arrives in the liquid reservoir 10 by condensing reflux pipeline 6 by condensed liquid again, gets back to evaporimeter 3 in the effect of imbibition core 11 capillary forces at last, so circulation.The heat transferred lampshade 7 that steam condenses in condenser 4 and discharges, because car can produce higher incoming flow wind speed under steam, so lampshade 7 can be dispersed into heat in the bound air by the mode with the heat exchange of incoming flow Forced Air Convection.Lampshade 7 has certain temperature as the heat radiation positions like this, can be used for the ice-melt that removes the snow, and can prevent that the air in the lamp chamber 12 from condensing at the inner surface of lampshade 7.
As an extension conversion for above preferred embodiment, keeping under the constant situation of other basic structures, this lamp housing 15 is made by heat-barrier material, or at the lamp housing 15 surperficial materials that coat with heat-proof quality, the high temperature that produces in the time of can significantly reducing engine operation has so just further reduced the environment temperature of LED headlamp work to Temperature Influence in the lamp chamber 12.
To sum up; explanation at the utility model preferred embodiment and conversion embodiment thereof; be intended to be convenient to understand its innovation essence; and it is nonrestrictive; those of ordinary skills can make many modifications, variation or equivalents through understanding; but only otherwise break away from claim institute restricted portion, all will fall within the protection domain of the present utility model.
Claims (5)
1. automobile LED headlamp heat-pipe radiating apparatus, comprise semi-enclosed lamp housing, lampshade and be arranged at the LED lamp body that is welded in the lamp housing lamp chamber on the metallic circuit, it is characterized in that: described metallic circuit is for vertically to assembling, and its another side wall with respect to the LED lamp body connects an evaporimeter, the top of described evaporimeter is connected by vapor transmission pipeline and the condenser of being close to lampshade, and described condenser is connected by the liquid reservoir of condensing reflux pipeline and base of evaporator, forms the loop heat pipe system of a sealing and gas-liquid cyclic transformation.
2. automobile LED headlamp heat-pipe radiating apparatus according to claim 1, it is characterized in that: described evaporimeter is dull and stereotyped cavity structure, the top is provided with the steam collection chamber, inside is provided with the imbibition core that is connected as a single entity, pass straight through to below the interior liquid level of liquid reservoir, and be provided with the baffle plate that an isolated steam enters liquid reservoir between described liquid reservoir and the evaporimeter.
3. according to claim 1 or 2 described automobile LED headlamp heat-pipe radiating apparatus, it is characterized in that: the inner wall surface that described evaporimeter is connected with metallic circuit is provided with plural spaced fin, form the steam discharge channel between the fin, be communicated to the evaporimeter top.
4. automobile LED headlamp heat-pipe radiating apparatus according to claim 1 is characterized in that: described condenser contacts for part with lampshade inner surface.
5. automobile LED headlamp heat-pipe radiating apparatus according to claim 1 is characterized in that: described lamp housing outer surface is coated with heat-barrier material, or shell itself is made by heat-barrier material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200459888U CN201396724Y (en) | 2009-05-13 | 2009-05-13 | Automobile LED headlight heat pipe cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200459888U CN201396724Y (en) | 2009-05-13 | 2009-05-13 | Automobile LED headlight heat pipe cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201396724Y true CN201396724Y (en) | 2010-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200459888U Expired - Fee Related CN201396724Y (en) | 2009-05-13 | 2009-05-13 | Automobile LED headlight heat pipe cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201396724Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011993A (en) * | 2010-11-26 | 2011-04-13 | 中山市锐盈电子有限公司 | Heat-pipe radiating type light-emitting diode (LED) vehicle lamp |
| CN103017116A (en) * | 2011-09-20 | 2013-04-03 | 现代自动车株式会社 | Dew condensation preventing device of head lamp for vehicle |
| CN103574562A (en) * | 2012-08-09 | 2014-02-12 | 现代自动车株式会社 | Moisture generation preventing structure of vehicle head lamp |
| CN104214734A (en) * | 2013-05-30 | 2014-12-17 | 海洋王（东莞）照明科技有限公司 | Lamp |
| CN105333368A (en) * | 2014-06-16 | 2016-02-17 | 法雷奥照明湖北技术中心有限公司 | Illumination and/or signal indication device for motor vehicle and motor vehicle |
| CN109841052A (en) * | 2017-11-28 | 2019-06-04 | 群光电子股份有限公司 | Infrared transmitting device with composite wood cover |
-
2009
- 2009-05-13 CN CN2009200459888U patent/CN201396724Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011993A (en) * | 2010-11-26 | 2011-04-13 | 中山市锐盈电子有限公司 | Heat-pipe radiating type light-emitting diode (LED) vehicle lamp |
| CN102011993B (en) * | 2010-11-26 | 2015-01-07 | 中山市锐盈电子有限公司 | Heat-pipe radiating type light-emitting diode (LED) vehicle lamp |
| CN103017116A (en) * | 2011-09-20 | 2013-04-03 | 现代自动车株式会社 | Dew condensation preventing device of head lamp for vehicle |
| CN103574562A (en) * | 2012-08-09 | 2014-02-12 | 现代自动车株式会社 | Moisture generation preventing structure of vehicle head lamp |
| CN103574562B (en) * | 2012-08-09 | 2018-05-11 | 现代自动车株式会社 | Vehicle head lamp prevents the structure that steam generates |
| CN104214734A (en) * | 2013-05-30 | 2014-12-17 | 海洋王（东莞）照明科技有限公司 | Lamp |
| CN104214734B (en) * | 2013-05-30 | 2017-11-28 | 海洋王（东莞）照明科技有限公司 | Light fixture |
| CN105333368A (en) * | 2014-06-16 | 2016-02-17 | 法雷奥照明湖北技术中心有限公司 | Illumination and/or signal indication device for motor vehicle and motor vehicle |
| CN109841052A (en) * | 2017-11-28 | 2019-06-04 | 群光电子股份有限公司 | Infrared transmitting device with composite wood cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100203 Termination date: 20120513 |