CN204693352U - A kind of passive heat radiation structure of automobile LED headlamp - Google Patents
A kind of passive heat radiation structure of automobile LED headlamp Download PDFInfo
- Publication number
- CN204693352U CN204693352U CN201520170290.4U CN201520170290U CN204693352U CN 204693352 U CN204693352 U CN 204693352U CN 201520170290 U CN201520170290 U CN 201520170290U CN 204693352 U CN204693352 U CN 204693352U
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- Prior art keywords
- heat radiation
- radiation structure
- passive heat
- radiator
- automobile
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Abstract
The utility model discloses a kind of passive heat radiation structure of automobile LED headlamp, belong to LED applied technical field.The utility model adopts following technical scheme: a kind of passive heat radiation structure of automobile LED headlamp, it is characterized in that, comprise LED light source, MCPCB plate, reflector, radiator, the nested top being arranged at described radiator of described reflector, described MCPCB plate is nested in described radiator, and described LED light source is arranged on described MCPCB plate.The utility model adopts fin-inserted radiator design can strengthen convection intensity that is overall and surrounding air, effectively can reduce the temperature of car light inside.
Description
Technical field
The utility model relates to a kind of passive heat radiation structural design of automobile LED headlamp, belongs to LED applied technical field.
Background technology
LED belongs to the cold light source of high heating, the LED photovoltaic conversion efficiency of prior art only reaches 10% ~ 20%, all the other are all converted into heat, but have a clear superiority in relative to 5% luminous efficiency of conventional incandescent, current LED produces and research and development department is is researching and developing high-capacity LED to overcome LED and the gap problem of other universal light sources on luminous flux.But large-power LED size is little, light efficiency is low, heat flow density is high, if unreasonable constraint heat, the gathering of chip heat will be caused, junction temperature raises, and then occur the phenomenons such as light efficiency declines, red shift of wavelength, energy gap reduction, encapsulating material are aging.Automotive LED headlamp is generally array-type LED module, the dense arrangement of light source, the hot environment of car light inside, makes heat problem become the subject matter of its volume production of restriction, is therefore necessary to carry out effective heat dissipation design to the LED headlamp of automobile.
Utility model content
The purpose of this utility model is to provide a kind of passive heat radiation structural design of automobile LED headlamp, to solve the efficiently radiates heat problem of the dense arrangement of automotive LED headlamp internal light source, the hot environment of car light inside.
The utility model adopts following technical scheme: a kind of passive heat radiation structural design of automobile LED headlamp, it is characterized in that, comprise LED light source, MCPCB plate, reflector, radiator, the nested top being arranged at described radiator of described reflector, described MCPCB plate is nested in described radiator, and described LED light source is arranged on described MCPCB plate.
Preferably, described radiator comprises fan, fin, and described fan is used for strengthening convection intensity that is overall and surrounding air.
Preferably, described fin is rectangle, and described fin is multichip connection.
Preferably, the spacing between described fin is more than or equal to 1.5mm, and the spacing increasing described fin can promote cross-ventilation.
Preferably, the thickness of described fin is more than or equal to 1mm, with bear transient heat flow by time transient thermal load impact.
Preferably, described LED light source is made up of the OSRAM automobile-used LED array of seven 1.5W.
The beneficial effect that the utility model reaches: install fan in (1) radiator additional and can strengthen convection intensity that is overall and surrounding air, effectively can reduce the temperature of car light inside; (2) radiator adopts blade inserting heat dissipation design, can increasing heat radiation area, increases fin pitch simultaneously, to increase cross-ventilation, promotes heat radiation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of LED array of the present utility model.
The implication marked in figure: 1-reflector, 2-MCPCB plate, 3-radiator, 4-LED light source.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection domain of the present utility model with this.
Fig. 1 is structural representation of the present utility model, Fig. 2 is the structural representation of LED array of the present utility model, the utility model proposes a kind of passive heat radiation structural design of automobile LED headlamp, comprise LED light source 4, MCPCB plate 2, reflector 1, radiator 3, the nested top being arranged at radiator 3 of reflector 1, MCPCB plate 2 is nested in radiator 3, and LED light source 4 is arranged on MCPCB plate 2.
Radiator 3 comprises fan, fin, and fan is used for strengthening convection intensity that is overall and surrounding air; Fin is rectangle, and fin is multichip connection; Spacing between fin is more than or equal to 1.5mm, and the spacing increasing fin can promote cross-ventilation; The thickness of fin is more than or equal to 1mm, with bear transient heat flow by time transient thermal load impact; LED light source 4 is made up of the OSRAM automobile-used LED array of seven 1.5W.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and distortion, these improve and distortion also should be considered as protection domain of the present utility model.
Claims (6)
1. the passive heat radiation structure of an automobile LED headlamp, it is characterized in that, comprise LED light source, MCPCB plate, reflector, radiator, the nested top being arranged at described radiator of described reflector, described MCPCB plate is nested in described radiator, and described LED light source is arranged on described MCPCB plate.
2. the passive heat radiation structure of a kind of automobile LED headlamp according to claim 1, is characterized in that, described radiator comprises fan, fin, and described fan is used for strengthening convection intensity that is overall and surrounding air.
3. the passive heat radiation structure of a kind of automobile LED headlamp according to claim 2, is characterized in that, described fin is rectangle, and described fin is multichip connection.
4. the passive heat radiation structure of a kind of automobile LED headlamp according to claim 3, is characterized in that, the spacing between described fin is more than or equal to 1.5mm, and the spacing increasing described fin can promote cross-ventilation.
5. the passive heat radiation structure of a kind of automobile LED headlamp according to claim 4, is characterized in that, the thickness of described fin is more than or equal to 1mm, with bear transient heat flow by time transient thermal load impact.
6. the passive heat radiation structure of a kind of automobile LED headlamp according to claim 1, is characterized in that, described LED light source is made up of the OSRAM automobile-used LED array of seven 1.5W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520170290.4U CN204693352U (en) | 2015-03-25 | 2015-03-25 | A kind of passive heat radiation structure of automobile LED headlamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520170290.4U CN204693352U (en) | 2015-03-25 | 2015-03-25 | A kind of passive heat radiation structure of automobile LED headlamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204693352U true CN204693352U (en) | 2015-10-07 |
Family
ID=54233637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520170290.4U Expired - Fee Related CN204693352U (en) | 2015-03-25 | 2015-03-25 | A kind of passive heat radiation structure of automobile LED headlamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204693352U (en) |
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2015
- 2015-03-25 CN CN201520170290.4U patent/CN204693352U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20160325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |