CN105570784A - Automotive LED headlamp capable of achieving overall and rapid radiating and radiating method - Google Patents
Automotive LED headlamp capable of achieving overall and rapid radiating and radiating method Download PDFInfo
- Publication number
- CN105570784A CN105570784A CN201510483563.5A CN201510483563A CN105570784A CN 105570784 A CN105570784 A CN 105570784A CN 201510483563 A CN201510483563 A CN 201510483563A CN 105570784 A CN105570784 A CN 105570784A
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- Prior art keywords
- housing
- heat
- heat dissipation
- metal frame
- dissipation metal
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3002—Superstructures characterized by combining metal and plastics, i.e. hybrid parts
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention relates to an automotive LED headlamp capable of achieving overall and rapid radiating. The automotive LED headlamp comprises a thermal conductive plastic shell and a metal radiating support, the metal radiating support extends out of the shell and forms radiating fins, and the metal radiating support and the shell are in sealing fit. The part, extending out of the shell, of the metal radiating support is multiple radiating fins alternately distributed in parallel so that heat in the automobile headlamp can be rapidly output to the exterior of the shell of the automobile headlamp through the radiating fins, and airflow generated in the automotive travelling process can conduct radiating on the radiating fins extending out of the shell. In addition, the heat on the metal radiating support is transmitted to the shell through a combination part of the metal radiating support and the shell, and heat is radiated overall and rapidly through the shell; and meanwhile, in the automobile travelling process, the generated airflow conducts rapid air cooling on the overall shell.
Description
Technical field
The present invention relates to a kind of car light, especially motor vehicle automobile-used LED headlight and the heat dissipating method such as car.
Background technology
The motor vehicle car lights such as domestic existing car have started exploitation and have adopted LED as light source, and LED has the advantages such as light efficiency is high, life-span length, energy-conserving and environment-protective, but the current photoelectric transformation efficiency of LED only 15%, and all the other 85% are converted to heat energy.
In order to solve the problem of LED heat radiation, prior art is in the seal casinghousing of car light, arranges the heat dissipation metal frame that volume is larger, then carries out forced heat radiation with fan, and its complex structure, expensive, volume are large, car light sealing is difficult to resolve certainly; The overall tightness of car light requires higher, and adopt fan to carry out forced heat radiation, heat not easily spreads out of in lamp, causes radiating effect unsatisfactory.
In addition, relative to LED, the fault rate of radiator fan is high, once fan breaks down, will the operating temperature of LED be raised rapidly, this will speed up LED ageing failure; Simultaneously in order to improve endothermic effect, long-pending comparatively large, the heavier-weight of heat dissipation metal support body of employing, causes production cost too high.
How while solution heat dissipation problem, guaranteeing the overall tightness of car light, reliability, economy, is the technical barrier that this area will solve.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of can the automobile-used LED headlight of overall, quick heat radiating and heat dissipating method, it utilizes the air-flow produced in vehicle travel process to carry out pressure cooling, to reach desirable radiating effect to heat-conducting type housing and the metal fin extending housing.
In order to solve the problem, the invention provides a kind of can the automobile-used LED headlight of quick heat radiating, comprising: heat-conducting plastic housing and heat dissipation metal frame, heat dissipation metal frame extends housing and forms radiating fin, is sealed and matched between heat dissipation metal frame and housing.
Preferred scheme is, the part of extending housing of described heat dissipation metal frame is the radiating fin of the alternate parallel distribution of multi-disc.
For the ease of producing, guaranteeing car light overall tightness, described housing single injection-molded is on described heat dissipation metal frame.
Further, described housing is provided with the water proof and dust proof Ventilated cap identical with housing cavity.It can realize autonomous respiration according to automobile-used headlight enclosure interior air pressure, and to make housing inside and outside air pressure balance, it discharges housing hot-air simultaneously, and can suck cold air, and then further improves radiating effect.
Adopt the housing of above-mentioned material of the present invention, in conjunction with embedding housing and extending the radiating fin of housing, after both combine, the integral heat sink effect of this headlight obtains lifting further.Reason is: on the one hand, and housing, radiating fin can outwards dispel the heat simultaneously; On the other hand, the good heat dissipation metal frame of heat conductivility can to housing transferring heat, and described housing surrounding is provided with radiating fin, forms a large area radiator to make heat conduction shell surrounding.So the integral heat sink effect of this headlight obtains larger lifting.
In addition, relative to prior art, thickness or the volume of the heat dissipation metal frame of the application can reduce more than 30%, reason extends the radiating fin of housing, in conjunction with can flash heat transfer, heat radiation housing, integral heat sink speed, even if adopt the heat dissipation metal frame of thinner thickness, also the normal work and use life-span of LED can be ensured, and without the need to adopting fan etc. to cool LED.
In order in vehicle travel process, make air-flow circulate fast at radiating fin place and dispel the heat, described radiating fin is the fin of the alternate parallel distribution of multi-disc.
When described automobile-used headlight is arranged on vehicle, described radiating fin vertical distribution and parallel with vehicle forward direction, and described housing surrounding exists assemblage gap, so that the air-flow produced in vehicle travel process carries out pressure cooling by this gap to heat-conducting type housing, radiating fin.
During concrete enforcement, the front side of described housing is provided with translucent cover, and housing, translucent cover form an annular seal space, and in sealing chamber, be provided with LED component and heat dissipation metal frame, this LED component is located on heat dissipation metal frame.Described heat dissipation metal frame comprises: for arranging the front console of described LED component, is connected to the described radiating fin on rear side of this front console; Each radiating fin passes described housing, and the middle part of each radiating fin and described housing single injection-molded, make the contact area of housing and each radiating fin larger, and the sheet number of radiating fin is more, width is longer, contact area is therebetween larger, be beneficial to radiating fin to housing heat conduction, and then be beneficial to and realize integral heat sink by housing.
The production method of above-mentioned automobile-used LED headlight, it comprises: be fixed in mould by described heat dissipation metal frame, the part of extending described housing is needed to each radiating fin, fusing point is adopted to fill up the gap of each adjacent radiating fin higher than the material of injection temperature or sheet material, then carry out matched moulds, filling, pressurize, cooling and the demoulding successively, described material or sheet material are removed.
The heat dissipating method of the automobile-used headlight of application aforementioned production method gained, when automobile-used headlight is arranged on vehicle, there is fit-up gap in the surrounding of described housing, described heat dissipating method comprises: the heat produced when the LED component of automobile-used headlight works exports to heat conduction shell by heat dissipation metal frame in housing, and by vehicle travel process, the air-flow that described fit-up gap place produces carries out air-cooled fast to the radiating fin extending housing, and then fast wind cold metal heat radiation rack.
Meanwhile, injection mo(u)lding after housing adopts PC plastic pellet to mix with submicron order aluminium nitride powder; Energy in housing spreads out of outside housing through the wall body of housing, meanwhile, described heat dissipation metal frame with the joint portion of housing, the heat on heat dissipation metal frame is passed on housing, by the overall outwards quick heat radiating of housing; Meanwhile, the air-flow produced when vehicle travels carries out air-cooled fast to described housing entirety.
The present invention has positive effect relative to prior art: (1) automobile-used headlight of the present invention, and entirety is a radiator, and housing entirety and radiating fin downstream direction, area of dissipation is large, thermal capacity is large.It utilizes the air-flow that produces in vehicle travel process to carry out pressure cooling to heat-conducting type housing, the radiating fin that extends housing, and air cooling effect is good, and structure is simple, practical, significantly reduce cost, solve car light sealing problem, any adverse circumstances can be adapted to, be beneficial to the popularization of LED headlamp.This structure is applicable to the application of other high-power LED lamps simultaneously.Heat dissipation metal frame and shell made in one piece are extended housing, heat in car light is exported to outside the housing of car light fast by heat dissipation metal frame, and dispelled the heat by the part of extending housing of air-flow to described heat dissipation metal frame produced in vehicle travel process, solve the problem that in car light, heat cannot export fast.In addition, in case material, be added with aluminium nitride powder, significantly can improve the heat dispersion of housing itself, in conjunction with embedding housing and extending the heat dissipation metal wing of housing, make the integral heat sink effect of headlight obtain lifting further; Relative to prior art, extended in the service life of LED headlamp.(2) housing of automobile-used headlight and radiating fin single injection-molded, production technology is easy, cost is lower; (3) radiating efficiency due to automobile-used headlight radiator structure of the present invention is higher, so the heat dissipation metal support body adopted amasss, the reduction more than 30% of the comparable prior art of weight, therefore significantly can reduce costs, alleviate car light weight, be beneficial to vehicle emissions reduction, and the spread of LED car lamp is significant.(4) in the present invention, the middle part of each radiating fin and described housing single injection-molded, make the contact area of housing and each radiating fin larger, and the sheet number of radiating fin is more, width is longer, contact area is therebetween larger, be beneficial to radiating fin to housing heat conduction, and then be beneficial to and realize integral heat sink by housing.(5) in the present invention, when housing and the injection mo(u)lding of heat dissipation metal frame, fusing point is adopted to fill up the gap of each adjacent heat radiation wing higher than the material of injection temperature or sheet material, then matched moulds, filling, pressurize, cooling and the demoulding is carried out successively, finally described material or sheet material are removed, guarantee that the part of extending housing of each radiating fin can not be stained with the material of housing, ensure that its radiating effect.
Accompanying drawing explanation
Below in conjunction with specific embodiment, the invention will be further described:
Fig. 1 is the structural representation of automobile-used LED headlight of the present invention;
Fig. 2 is the structural representation of the rear end face of described automobile-used LED headlight;
Fig. 3 is the structural representation of another kind of automobile-used LED headlight of the present invention;
Fig. 4 is the right view of Fig. 3;
Fig. 5 is the top view of Fig. 3;
Fig. 6 is the left view of Fig. 3;
Fig. 7 is the longitudinal sectional drawing of Fig. 3.
Detailed description of the invention
Embodiment 1
See Fig. 1 to 2, or Fig. 3-7, the present embodiment can the automobile-used LED headlight of quick heat radiating, comprise: the translucent cover 2 that heat conduction shell 1, sealing are arranged on front side of this housing 1, housing 1, translucent cover 2 form an annular seal space, are provided with LED component and heat dissipation metal frame 4 in sealing chamber, and this LED component 3 is located on heat dissipation metal frame 4, housing 1 is extended at the rearward end of heat dissipation metal frame 4 and/or bottom and/or top, is sealed and matched between heat dissipation metal frame 4 and housing 1.
Described heat dissipation metal frame comprises: for arranging the front console of described LED component 3, is connected to the described radiating fin 4-1 on rear side of this front console; Each radiating fin 4-1 passes described housing 1, and the middle part of each radiating fin 4-1 and described housing 1 single injection-molded.
When described automobile-used headlight is arranged on vehicle, described radiating fin 4-1 vertical distribution and parallel with vehicle forward direction, and described housing 1 surrounding exists assemblage gap, so that the air-flow produced in vehicle travel process carries out pressure cooling by this gap to heat-conducting type housing 1, radiating fin 4-1.
Air-flow in vehicle travel process can circulate fast at radiating fin place and dispel the heat, and then realizes the effect of quick cool metal radiating fin support 4.
Injection mo(u)lding after housing 1 adopts PC plastic pellet to mix with submicron order aluminium nitride powder, thermal conductivity factor can reach 0.5-0.8W/m-k, and the weight ratio of PC plastic pellet and aluminium nitride powder is 9:1 to 15:1., preferred 11:1.Its radiating effect, relative to the pure housing (its thermal conductivity factor is only 0.28W/m-k) adopting the injection mo(u)lding of PC plastic pellet, radiating efficiency can significantly improve.
Housing 1 entirety has been covered with radiating fin, and entire area is large, and thermal capacity is large, can absorb rapidly the heat on heat dissipation metal frame 4, by housing 1 and the outside release heat of radiating fin.
The air-flow produced when motor racing makes the temperature difference that the inside and outside generation of housing 1 is larger, when LED is worked temperature by heat dissipation metal frame 4 along two directions (1, heat dissipation metal frame 4 itself is exposed at heat dissipation metal empennage outside housing 1,2, heat dissipation metal frame 4 is to housing 1 transferring heat, heat dissipation metal frame 4 is outside release heat together with housing 1) dispel the heat, make heat radiation more abundant, better effects if.
Apply the heat dissipating method of above-mentioned headlight, when automobile-used LED headlight is arranged on vehicle, there is fit-up gap in the surrounding of described housing 1, described heat dissipating method comprises: the heat produced when the LED component 3 of automobile-used headlight works exports to housing by heat dissipation metal frame in housing, and by vehicle travel process, the air-flow that described fit-up gap place produces carries out air-cooled fast to described radiating fin, and then fast wind cold metal heat radiation rack 4.
Meanwhile, injection mo(u)lding after housing adopts PC plastic pellet to mix with submicron order aluminium nitride powder, becomes heat-conducting plastic shell; Energy in housing spreads out of outside housing through the wall body of housing, meanwhile, described heat dissipation metal frame with the joint portion of heat-conducting plastic housing, the heat on heat dissipation metal frame is passed on heat-conducting plastic housing, by the overall outwards quick heat radiating of housing; Meanwhile, the air-flow produced when vehicle travels cools fast to described housing entirety.
Embodiment 2
The production method of above-mentioned automobile-used LED headlight, comprise: described heat dissipation metal frame 4 is fixed in mould, the part of extending described housing 1 is needed to each radiating fin 4-1, fusing point is adopted to fill up the gap of each adjacent radiating fin 4-1 higher than the material of injection temperature or sheet material, then carry out matched moulds, filling, pressurize, cooling and the demoulding successively, described material or sheet material are removed.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.
Claims (9)
1. an automobile-used LED headlight, comprising: housing (1) and heat dissipation metal frame (4), is characterized in that: heat dissipation metal frame (4) extends housing (1), is sealed and matched between heat dissipation metal frame (4) and housing (1).
2. automobile-used LED headlight according to claim 1, is characterized in that the part of extending housing (1) of described heat dissipation metal frame (4) is the radiating fin (4-1) of the alternate parallel distribution of multi-disc.
3. automobile-used headlight according to claim 1 and 2, it is characterized in that: also comprise: sealing is arranged on the translucent cover (2) of housing (1) front side, housing (1), translucent cover (2) form an annular seal space, in sealing chamber, be provided with the LED component be placed on heat dissipation metal frame (4), described housing (1) single injection-molded is on described heat dissipation metal frame (4).
4. automobile-used LED headlight according to claim 3, is characterized in that: when described headlight is arranged on vehicle, described radiating fin (4-1) vertical distribution and parallel with vehicle forward direction.
5. automobile-used LED headlight according to claim 1 and 2, is characterized in that: described housing is provided with the water proof and dust proof Ventilated cap communicated with housing cavity.
6. automobile-used LED headlight according to claim 1 and 2, is characterized in that: described heat dissipation metal frame comprises: for arranging the front console of described LED component, is connected to the described radiating fin (4-1) on rear side of this front console;
Each radiating fin (4-1) passes described housing (1), and the middle part of each radiating fin (4-1) and described housing (1) single injection-molded.
7. the production method of an automobile-used LED headlight according to claim 6, it is characterized in that comprising: described heat dissipation metal frame (4) is fixed in mould, the part of extending described housing (1) is needed to each radiating fin (4-1), fusing point is adopted to fill up the gap of each adjacent radiating fin (4-1) higher than the material of injection temperature or sheet material, then carry out matched moulds, filling, pressurize, cooling and the demoulding successively, described material or sheet material are removed.
8. application rights requires the heat dissipating method of the automobile-used LED headlight of the production method gained described in 7, and when this headlight is arranged on vehicle, the surrounding of described housing (1) exists fit-up gap, it is characterized in that described heat dissipating method comprises:
The heat produced when the LED component of headlight works exports to housing (1) by heat dissipation metal frame (4) in housing, and carry out air-cooled fast to the described radiating fin (4-1) extending housing by the air-flow that the place of fit-up gap described in vehicle travel process produces, and then fast wind cold metal heat radiation rack (4).
9. a heat dissipating method according to claim 8, characterized by further comprising: the heat energy in housing spreads out of outside housing through the wall body of housing, simultaneously, described heat dissipation metal frame (4) with the joint portion of housing (1), the heat on heat dissipation metal frame (4) is passed on housing (1), by the overall outwards quick heat radiating of housing (1); Meanwhile, the air-flow produced when vehicle travels carries out air-cooled fast to described housing (1) entirety.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911108076.5A CN110778975A (en) | 2015-08-07 | 2015-08-07 | LED headlamp for vehicle and heat dissipation method thereof |
| CN201510483563.5A CN105570784B (en) | 2015-08-07 | 2015-08-07 | It is a kind of can integrally, the automobile-used LED headlight and heat dissipating method of rapid cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510483563.5A CN105570784B (en) | 2015-08-07 | 2015-08-07 | It is a kind of can integrally, the automobile-used LED headlight and heat dissipating method of rapid cooling |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911108076.5A Division CN110778975A (en) | 2015-08-07 | 2015-08-07 | LED headlamp for vehicle and heat dissipation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105570784A true CN105570784A (en) | 2016-05-11 |
| CN105570784B CN105570784B (en) | 2019-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911108076.5A Pending CN110778975A (en) | 2015-08-07 | 2015-08-07 | LED headlamp for vehicle and heat dissipation method thereof |
| CN201510483563.5A Active CN105570784B (en) | 2015-08-07 | 2015-08-07 | It is a kind of can integrally, the automobile-used LED headlight and heat dissipating method of rapid cooling |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911108076.5A Pending CN110778975A (en) | 2015-08-07 | 2015-08-07 | LED headlamp for vehicle and heat dissipation method thereof |
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| Country | Link |
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| CN (2) | CN110778975A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121788A (en) * | 2017-06-27 | 2017-09-01 | 镇江万新光学眼镜有限公司 | A kind of refrigerant glasses of phase transformation and preparation method thereof |
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| JP2002124123A (en) * | 2000-10-17 | 2002-04-26 | Denso Corp | Vehicle headlight |
| CN1270122C (en) * | 2003-04-08 | 2006-08-16 | 株式会社小糸制作所 | Vehicular front headlight |
| CN102661562A (en) * | 2012-04-20 | 2012-09-12 | 奇瑞汽车股份有限公司 | Automobile lamp and automobile |
| CN103162207A (en) * | 2011-12-15 | 2013-06-19 | 欧司朗股份有限公司 | Light-emitting diode (LED) unit installing module and manufacturing method thereof and LED lighting device and automobile headlamp |
| CN104613399A (en) * | 2013-11-05 | 2015-05-13 | 标致雪铁龙(中国)汽车贸易有限公司 | Vehicle headlamp with LED light source |
| CN204962522U (en) * | 2015-08-07 | 2016-01-13 | 常州通宝光电股份有限公司 | Can be wholly, quick radiating automobile -used LED headlamp |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090059594A1 (en) * | 2007-08-31 | 2009-03-05 | Ming-Feng Lin | Heat dissipating apparatus for automotive LED lamp |
| DE102009054926B4 (en) * | 2009-12-18 | 2014-08-21 | Osram Gmbh | LED lighting device |
| CN202884753U (en) * | 2012-10-11 | 2013-04-17 | 青岛信控电子技术有限公司 | Light-emitting diode (LED) car light |
| CN103994347A (en) * | 2014-04-23 | 2014-08-20 | 王定锋 | LED heat radiation structure formed by mixing heat conducting insulation powder and resin and LED linear lamp |
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2015
- 2015-08-07 CN CN201911108076.5A patent/CN110778975A/en active Pending
- 2015-08-07 CN CN201510483563.5A patent/CN105570784B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002124123A (en) * | 2000-10-17 | 2002-04-26 | Denso Corp | Vehicle headlight |
| CN1270122C (en) * | 2003-04-08 | 2006-08-16 | 株式会社小糸制作所 | Vehicular front headlight |
| CN103162207A (en) * | 2011-12-15 | 2013-06-19 | 欧司朗股份有限公司 | Light-emitting diode (LED) unit installing module and manufacturing method thereof and LED lighting device and automobile headlamp |
| CN102661562A (en) * | 2012-04-20 | 2012-09-12 | 奇瑞汽车股份有限公司 | Automobile lamp and automobile |
| CN104613399A (en) * | 2013-11-05 | 2015-05-13 | 标致雪铁龙(中国)汽车贸易有限公司 | Vehicle headlamp with LED light source |
| CN204962522U (en) * | 2015-08-07 | 2016-01-13 | 常州通宝光电股份有限公司 | Can be wholly, quick radiating automobile -used LED headlamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107121788A (en) * | 2017-06-27 | 2017-09-01 | 镇江万新光学眼镜有限公司 | A kind of refrigerant glasses of phase transformation and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105570784B (en) | 2019-10-11 |
| CN110778975A (en) | 2020-02-11 |
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