CN204829640U - But automobile -used LED headlamp of forced air -cooling when utilizing car motion - Google Patents
But automobile -used LED headlamp of forced air -cooling when utilizing car motion Download PDFInfo
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- CN204829640U CN204829640U CN201520594397.1U CN201520594397U CN204829640U CN 204829640 U CN204829640 U CN 204829640U CN 201520594397 U CN201520594397 U CN 201520594397U CN 204829640 U CN204829640 U CN 204829640U
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Abstract
The utility model relates to a but automobile -used LED headlamp of forced air -cooling when utilizing car motion, include: casing and translucent cover, casing, translucent cover constitute a sealed chamber, are equipped with the LED subassembly at this sealed intracavity, on this casing leading flank, and on metal heat dissipation frame was located to this LED subassembly, metal heat dissipation frame extended the casing and forms the heat dissipation wing, sealed cooperation between metal heat dissipation frame and the casing for outside heat in the car light can export the casing of car light to through the heat dissipation wing fast, and it is right through the air current that produces among the driving motor vehicles the heat dissipation wing that extends the casing dispels the heat. Furthermore, metal heat dissipation frame and the joint portion casing, with the heat transfer on the metal heat dissipation frame to the casing on, by the whole outside quick heat dissipation of casing, simultaneously, the air current that produces when the vehicle traveles is right the casing wholly carries out quick forced air cooling.
Description
Technical field
The utility model relates to a kind of car light, especially the motor vehicle such as car, can the automobile-used LED headlight of air blast cooling and heat dissipating method when utilizing motor racing.
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.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of can the automobile-used LED headlight of air blast cooling when utilizing motor racing, 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 utility model provide a kind of can the automobile-used LED headlight of quick heat radiating, comprise: heat-conducting plastic housing and heat dissipation metal frame, seal the translucent cover be arranged on front side of housing, housing, translucent cover form an annular seal space, in sealing chamber, be provided with the LED component be placed on 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; Injection mo(u)lding after housing adopts PC plastic pellet to mix with submicron order aluminium nitride powder.
In order to improve the radiating effect of housing itself, injection mo(u)lding after housing adopts PC plastic pellet to mix with submicron order aluminium nitride powder, the thermal conductivity factor of case material can reach 0.5-0.8W/m-k, the weight ratio of PC plastic pellet and aluminium nitride powder is 9:1 to 15:1(and the housing made of the simple PC plastic pellet of the employing of prior art, and thermal conductivity factor is only 0.28W/m-k).
Adopt above-mentioned heat-conducting type housing, internal heat fast transfer can be gone out housing by it, improves radiating effect.Automobile front must adapt to various different severe environments, particularly waterproof, and air-tightness requires higher, and enclosure interior of the present utility model adopts external forced air-cooled, and structure is simple, solve sealing problem, significantly reduces cost simultaneously.
Preferred scheme is that described housing is provided with the water proof and dust proof Ventilated cap identical with housing cavity further.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.
For the ease of producing, guaranteeing car light overall tightness, described housing single injection-molded is on described heat dissipation metal frame.
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.
Adopt the housing of above-mentioned material of the present utility model, 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, is beneficial to radiating fin to housing heat conduction, and then is beneficial to and realizes 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 utility model has positive effect relative to prior art: (1) automobile-used headlight of the present utility model, 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 utility model 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 utility model, 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 utility model, 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.
Detailed description of the invention
Embodiment 1
See Fig. 1 to 2, or Fig. 3-7, the automobile-used LED headlight of the present embodiment, 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 the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.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.
Accompanying drawing explanation
Below in conjunction with specific embodiment, the utility model is described in further detail:
Fig. 1 is the structural representation of automobile-used LED headlight of the present utility model;
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 utility model;
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.
Claims (5)
1. one kind can the automobile-used LED headlight of air blast cooling when utilizing motor racing, comprise: housing (1) and heat dissipation metal frame (4), sealing is arranged on the translucent cover (2) of housing (1) front side, housing (1), translucent cover (2) form an annular seal space, the LED component be placed on heat dissipation metal frame (4) is provided with in sealing chamber, it is characterized in that: heat dissipation metal frame (4) extends housing (1), be 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; Radiating fin (4-1) is distributed in the outside surrounding of housing (1).
3. automobile-used LED headlight according to claim 2, is characterized in that: when described headlight is arranged on vehicle, described radiating fin (4-1) vertical distribution and parallel with vehicle forward direction.
4. 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.
5. 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594397.1U CN204829640U (en) | 2015-08-07 | 2015-08-07 | But automobile -used LED headlamp of forced air -cooling when utilizing car motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520594397.1U CN204829640U (en) | 2015-08-07 | 2015-08-07 | But automobile -used LED headlamp of forced air -cooling when utilizing car motion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204829640U true CN204829640U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520594397.1U Active CN204829640U (en) | 2015-08-07 | 2015-08-07 | But automobile -used LED headlamp of forced air -cooling when utilizing car motion |
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| Country | Link |
|---|---|
| CN (1) | CN204829640U (en) |
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- 2015-08-07 CN CN201520594397.1U patent/CN204829640U/en active Active
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