CN210662706U - Automobile headlamp cooling system - Google Patents
Automobile headlamp cooling system Download PDFInfo
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- CN210662706U CN210662706U CN201921971867.6U CN201921971867U CN210662706U CN 210662706 U CN210662706 U CN 210662706U CN 201921971867 U CN201921971867 U CN 201921971867U CN 210662706 U CN210662706 U CN 210662706U
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- cooling
- heat
- radiator
- cooling pipe
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- 238000001816 cooling Methods 0.000 title claims abstract description 36
- 230000017525 heat dissipation Effects 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010949 copper Substances 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 17
- 239000000110 cooling liquid Substances 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- 238000004512 die casting Methods 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 12
- 239000012790 adhesive layer Substances 0.000 claims description 8
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 229920006332 epoxy adhesive Polymers 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- 230000004308 accommodation Effects 0.000 abstract description 3
- 230000004323 axial length Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 229920006335 epoxy glue Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model relates to a car headlight cooling system, include according to preface superimposed light emitting source, insulating layer, copper backplate, heat conducting glue layer and radiator. The radiator is an all-aluminum one-time die-casting molding piece, and a plurality of radiating fins are arranged on the radiator. In addition, the automobile headlamp cooling system further comprises a cooling pipe and a cooling liquid supply unit. The cooling liquid supply unit is communicated with the cooling pipe and provides power support for continuous circulation of the cooling liquid in an inner cavity of the cooling pipe. The cooling pipe is coiled and fixed on the back of the radiator. Therefore, the heat dissipation speed is ensured, and the temperature of the headlamp is always kept in a reasonable range. More importantly, through adopting above-mentioned technical scheme to set up, reduced car headlight cooling system's axial length size value effectively to reduced the demand to accommodation space in the installation, be convenient for carry out structural design and overall layout to passing lamp groove, and reduced the later stage installation and overhauld the degree of difficulty.
Description
Technical Field
The utility model belongs to the technical field of the car lamps and lanterns heat dissipation technique and specifically relates to a car headlight cooling system.
Background
At present, the headlights are all arranged on the front side of the vehicle, and have two functions: firstly, illumination is carried out to ensure the safety in driving; and the second is signal display, namely, the state of the vehicle is indicated or the driving intention of the driver of the vehicle is informed, so that the vehicle or the road information can be conveniently communicated with the driver of the other side. In the actual operation process, the headlamp must radiate heat outwards, which means that most of the capacity is converted into heat, and as the operation time is prolonged, the junction temperature of the headlamp itself is increased, and the luminous efficiency and the service life of the headlamp are reduced. In the prior art, as shown in fig. 1, the cart light source is generally fixed on a copper back plate for heat conduction, and a heat sink and a heat dissipation fan are used to increase the heat dissipation speed. Generally speaking, the heat dissipation fan is overlapped right behind the radiator, thereby inevitably increasing the length size of the heat dissipation system, further increasing the depth value of the dipped headlight lamp groove, being inconvenient to assemble and difficult to subsequently overhaul. In addition, when the cooling fan is adopted, heat is mainly dissipated in a thermal convection mode, and the heat dissipation efficiency is low. Thus, a skilled person is urgently needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a car headlight cooling system that structural design is simple, and the radiating efficiency is high, and axial dimension is less relatively.
In order to solve the technical problem, the utility model relates to an automobile headlamp cooling system, include light emitting source, insulating layer, copper backplate, heat conducting glue layer and the radiator of superpose according to the preface. The radiator is an all-aluminum one-time die-casting molding piece, and a plurality of radiating fins are arranged on the radiator. In addition, the automobile headlamp cooling system further comprises a cooling pipe and a cooling liquid supply unit. The cooling liquid supply unit is communicated with the cooling pipe and provides power support for continuous circulation of the cooling liquid in an inner cavity of the cooling pipe. The cooling pipe is coiled and fixed on the back of the radiator.
As the utility model discloses technical scheme's further improvement, the heat-conducting glue layer is formed by the coating of pre-curing heat-conducting insulation epoxy glue, and its coefficient of heat conductivity control is at 2 ~ 3W/(m. A placing groove is formed in the front face of the radiator and opposite to the position corresponding to the copper back plate. An annular glue-containing dovetail groove is formed around the bottom wall of the placing groove, and the depth of the annular glue-containing dovetail groove is not less than 1 mm.
As the utility model discloses technical scheme's further improvement, the quantity of annular glue-holding dovetail sets up to a plurality ofly, and from inside to outside according to the preface around the central point of placing the recess and arrange with one heart.
As the technical scheme of the utility model further improve, the radiating fin distributes around the light emitting source, and the more it is close to and place its length value of recess central zone and height value bigger.
As the technical scheme of the utility model improve further, the thickness of heat dissipation fin is not less than 4mm, and the rib height is not less than 40mm, and the rib length is not less than 50mmm, and adjacent interval is not less than 6 mm.
As the further improvement of the technical proposal of the utility model, the insulating layer is an epoxy glass cloth bonding sheet, and the thickness of the insulating layer is controlled to be 75 to 150 μm.
As the technical scheme of the utility model the further improvement, the light emitting source is formed by a plurality of LED light source chip arrays.
Compare in the car headlight cooling system of traditional project organization the utility model discloses an among the technical scheme disclosed, adopt the cooling tube to replace radiator fan to make its thermal radiating mode convert the heat-conduction into by the thermal convection, thereby guaranteed the heat speed of scattering and disappearing, ensure that headlight self temperature remains throughout at reasonable within range. More importantly, through adopting above-mentioned technical scheme to set up, reduced car headlight cooling system's axial length size value effectively to reduced the demand to accommodation space in the installation, be convenient for carry out structural design and overall layout to passing lamp groove, and reduced the later stage installation and overhauld the degree of difficulty.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a heat dissipation system of a headlamp of an automobile in the prior art.
Fig. 2 is a schematic structural diagram of the heat dissipation system of the car headlamp of the present invention.
Fig. 3 is a view from direction a of fig. 2.
Fig. 4 is a view from direction B of fig. 2.
1-a light emitting source; 2-an insulating layer; 3-a copper back plate; 4-heat-conducting adhesive layer; 5-a radiator; 51-heat dissipating fins; 52-placing the groove; 521-an annular glue-containing dovetail groove; 53-bolt through holes; 6-cooling tube.
Detailed Description
In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description of the present invention and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the following, the contents of the present invention are further described in detail with reference to the specific embodiments, and fig. 2 shows a schematic structural diagram of the heat dissipation system of the car headlamp of the present invention, which can be seen that the heat dissipation system includes a light emitting source 1, an insulating layer 2, a copper back plate 3, a heat conductive adhesive layer 4 and a heat sink 5 which are stacked according to the order from top to bottom. A plurality of fins 51 are provided on the heat sink 5. In addition, the headlamp cooling system is additionally provided with a cooling tube 6 and a cooling liquid supply unit (not shown in the figure). The cooling liquid supply unit is communicated with the cooling pipe 6 and provides power support for the continuous circulation of the cooling liquid in the inner cavity of the cooling pipe. The cooling pipe 6 is coiled and fixed to the back surface of the radiator 5 (as shown in fig. 3). During actual operation, the heat of the light emitting source 1 is conducted mainly along the following path: the heat is conducted along the insulating layer 2, the copper back plate 3, the heat conductive adhesive layer 4, the radiator 5 and the cooling pipe 6 in sequence. Therefore, the heat dissipation mode of the luminous source is converted from the traditional heat convection into the heat conduction, so that the heat dissipation speed is effectively improved, and the temperature of the headlamp is always kept in a reasonable range. More importantly, through adopting above-mentioned technical scheme to set up, reduced car headlight cooling system's axial length size value effectively to reduced the demand to accommodation space in the installation, be convenient for carry out structural design and overall layout to passing lamp groove, and reduced the later stage installation and overhauld the degree of difficulty.
It should be emphasized that, in the prior art, the copper back plate and the heat sink are usually connected by means of screws, but this construction scheme has a high requirement on the flatness of the copper back plate and the heat sink housing, thereby increasing the difficulty in processing and manufacturing. Therefore, the utility model discloses in adopt the mode of thermal adhesive layer 4 to realize fixed between copper backplate 3 and radiator 5.
In order to ensure the adhesion stability and the construction convenience between the copper back plate 3 and the heat sink 5, the heat conductive adhesive layer 4 is preferably formed by coating a pre-cured heat conductive insulating epoxy adhesive, and the heat conductivity thereof is controlled to be 2-3W/(m DEG C).
In addition, generally, the heat sink 5 is a one-step die-cast molding made of aluminum, which has poor adhesion with the heat conductive and insulating epoxy resin, and is likely to fall off from the copper back plate 3 during the driving of the automobile. For this purpose, a placement groove 52 is also formed on the front surface of the heat sink 5 at a position opposite to the copper back plate 3. And an annular glue-containing dovetail groove 521 is formed around the bottom wall of the placing groove 52, and the depth is not less than 1mm (as shown in fig. 4). Thus, the heat-conducting insulating epoxy glue is riveted in the annular glue-accommodating dovetail groove 521 after being condensed, so that the connection reliability of the copper back plate 3 is effectively improved.
As shown in fig. 4, the number of the annular glue-accommodating dovetail grooves 521 is preferably set to be plural, and the annular glue-accommodating dovetail grooves are concentrically arranged from inside to outside in sequence around the central point of the placing groove 52 (as shown in fig. 4), so that, on one hand, the balance of the fixing force applied to the copper back plate 3 is optimized, and the reliability of the connection is further ensured; on the other hand, the uniformity of gluing is convenient to realize, and the molding of the glue layer is facilitated.
Furthermore, the heat dissipation fins 51 are distributed around the light source 1, and the length and height of the heat dissipation fins are larger in the central area of the placement groove 52, so as to increase the heat dissipation speed as much as possible and ensure the heat dissipation efficiency. Generally, the thickness of the heat dissipating ribs 51 is preferably not less than 4mm, the height of the ribs is preferably not less than 40mm, the length of the ribs is preferably not less than 50mmm, and the adjacent spacing is preferably not less than 6mm (as shown in FIGS. 3 and 4).
The insulating layer 4 is preferably an epoxy glass cloth adhesive sheet, and the thickness thereof is controlled to be 75 to 150 μm.
In view of the advantages of high light efficiency, energy saving, low failure rate, long service life, etc., the light source 1 is preferably formed by a plurality of LED light source chips, so as to effectively reduce the self-heating value of the light source and reduce the maintenance frequency on the premise of ensuring the overall brightness of the headlamp.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A heat dissipation system for an automobile headlamp comprises a light emitting source, an insulating layer, a copper back plate, a heat conducting adhesive layer and a heat radiator which are sequentially stacked; the radiator is an all-aluminum one-time die-casting molding piece, is provided with a plurality of radiating fins, and is characterized by further comprising a cooling pipe and a cooling liquid supply unit; the cooling liquid supply unit is communicated with the cooling pipe and provides power support for continuous circulation of cooling liquid in an inner cavity of the cooling pipe; the cooling pipe is coiled and fixed on the back of the radiator.
2. The heat dissipation system for the automobile headlamp of claim 1, wherein the heat conductive adhesive layer is formed by coating a pre-cured heat conductive insulating epoxy adhesive, and the heat conductivity of the heat conductive adhesive layer is controlled to be 2-3W/(m DEG C); a placing groove is formed in the front face of the radiator and in a position opposite to the copper back plate; an annular glue-containing dovetail groove is formed around the bottom wall of the placing groove, and the depth of the annular glue-containing dovetail groove is not less than 1 mm.
3. The heat dissipating system for headlights of claim 2, wherein the number of the annular glue-accommodating dovetail grooves is plural, and the annular glue-accommodating dovetail grooves are concentrically arranged around the center point of the placement groove from inside to outside in sequence.
4. The heat dissipating system for vehicle headlamps as claimed in claim 2, characterized in that the heat dissipating ribs are distributed around the light source with a greater length and a greater height closer to the central region of the placement recess.
5. The vehicle headlamp cooling system as defined in claim 4, wherein the thickness of the cooling fin is not less than 4mm, the height of the rib is not less than 40mm, the length of the rib is not less than 50mmm, and the adjacent distance is not less than 6 mm.
6. The heat dissipating system for an automobile headlamp as defined in claim 1, wherein the insulating layer is an epoxy glass cloth adhesive sheet, and the thickness thereof is controlled to be 75 to 150 μm.
7. The vehicle headlamp cooling system as defined in any one of claims 1-6, wherein the light source is formed by an array of LED light source chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921971867.6U CN210662706U (en) | 2019-11-15 | 2019-11-15 | Automobile headlamp cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921971867.6U CN210662706U (en) | 2019-11-15 | 2019-11-15 | Automobile headlamp cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210662706U true CN210662706U (en) | 2020-06-02 |
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ID=70810354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921971867.6U Active CN210662706U (en) | 2019-11-15 | 2019-11-15 | Automobile headlamp cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210662706U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113241333A (en) * | 2021-04-30 | 2021-08-10 | 阳光电源股份有限公司 | Power device heat dissipation system, assembly method thereof and semiconductor equipment |
| WO2024184450A1 (en) * | 2023-03-09 | 2024-09-12 | Osram Gmbh | Lighting device comprising embedded electronics |
| US12104765B2 (en) | 2021-12-29 | 2024-10-01 | Byd Company Limited | Heat spreader and illumination device |
-
2019
- 2019-11-15 CN CN201921971867.6U patent/CN210662706U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113241333A (en) * | 2021-04-30 | 2021-08-10 | 阳光电源股份有限公司 | Power device heat dissipation system, assembly method thereof and semiconductor equipment |
| US12104765B2 (en) | 2021-12-29 | 2024-10-01 | Byd Company Limited | Heat spreader and illumination device |
| WO2024184450A1 (en) * | 2023-03-09 | 2024-09-12 | Osram Gmbh | Lighting device comprising embedded electronics |
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