CN102944001B - Heat radiating device of high-power LED (Light-emitting diode) car lamp - Google Patents
Heat radiating device of high-power LED (Light-emitting diode) car lamp Download PDFInfo
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- CN102944001B CN102944001B CN201210443567.7A CN201210443567A CN102944001B CN 102944001 B CN102944001 B CN 102944001B CN 201210443567 A CN201210443567 A CN 201210443567A CN 102944001 B CN102944001 B CN 102944001B
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Abstract
The invention relates to a heat radiating device of a high-power LED (Light-emitting diode) car lamp, which comprises a heat radiator, heat pipes, a synthetic jet actuator, a temperature sensor, a singlechip, a drive circuit box and more than one LED integrated light source, wherein the condensate sections of the heat pipes are sequentially and integrally welded with fins of the heat radiator along the direction vertical to the fins of the heat radiator, the synthetic jet actuator is fixed at the center of a flat plate part of the heat radiator, the temperature sensor and one of LED integral light sources are arranged on a light source support in parallel, a transmission line of the temperature sensor passes through a rear shell of the car lamp to be connected to the signlechip and an interface end of a temperature reading circuit of the drive circuit box, the singlechip and a power control end of the synthetic jet actuator of the drive circuit box are connected with the synthetic jet actuator, an LED power drive circuit is connected with the LED integrated light sources, and the main control end is connected with a central controller of a car. The device disclosed by the invention can effectively solve the difficulty of heat radiating of the high-power LED applied for lighting of the car headlamp, is simple in structure and convenient to install, and has a wide market prospect.
Description
One, technical field
The present invention relates to the heat abstractor in automobile lighting light fixture heat dissipation technology field, particularly a kind of high-power LED car light.
Two, background technology
LED is little with its volume, the life-span is long, energy consumption is low, vibration resistance, start-up time fast and the advantage such as environmental protection, has application in a lot of fields.In automotive lighting field, because LED reaction speed is fast, at first on Bei Ying Yong Yu Brake car light, to allow driver below know in time the travel conditions of front vehicles, reduce the generation of rear-end collision accident.In recent years, along with the progress of semi-conducting material and packaging technology, the luminous flux of high-power White LED has obtained further raising, LED also expands to rear combination lamp by high-mount stop lamp gradually in the application in automotive lighting field, especially along with the exploitation of high-power and high-luminance white light LEDs, LED starts to be used to car headlamp, has become first-selected automotive luminaire of new generation.
LED car light is in the time of illumination work at present, approximately 20% ~ 30% input power can only be converted into luminous energy, and the input power of all the other 70%-80% will be converted into heat, if heat can not shed timely and effectively, the rising of temperature will cause that LED hydraulic performance decline even lost efficacy; And LED car headlamp is near enging cabin, and operating ambient temperature is higher, and lamp interior space is little, and sealing and shock resistance, stability requirement are high.How by effective heat dissipation design, allow the normal operation of LED car light, become technical problem urgently to be resolved hurrily.
Valeo group is the heat dissipation problem that solves car headlamp, for LED light fixture has been set a kind of management mode that can ensure LED light fixture trouble free service, when the temperature of LED chip is raised to while presetting threshold values, circuit will automatically switch, allow output power drop to 20% of general power, reach the object of of short duration cooling by reducing LED light fixture input power, but this has changed the running parameters such as the current/voltage of LED circuit, and LED is to the exigent device of current stability, this way can impact the life-span of this system.
Document (Li Zhaohui. the active heat radiating device of great power LED for car light, publication No.: CN 1 0,210 2868 A, the applying date: 2010.11.18) announce a kind of temperature feedback active heat radiating device of great power LED, this invention is taking semiconductor cooler as Thermal Conduction Equipment, final heat radiation vertically acts on radiator with axle shape electric motor fan, be unfavorable for that heat shifts with air-flow, and complicated structure, be not easy to install between concrete Vehicle lamp structure.
Three, summary of the invention
The object of this invention is to provide the heat abstractor of a kind of radiating effect high-power LED car light remarkable, simple in structure, easy for installation.
The technical solution that realizes the object of the invention is: a kind of heat abstractor of high-power LED car light, comprise radiator, combining jet device, temperature sensor, single-chip microcomputer and drive circuit box and more than one LED integrated optical source, the respectively corresponding heat pipe of described each LED integrated optical source; Described heat pipe is divided into the heat pipe evaporator section of vehicle lamp body inside and the heat pipe condenser section of vehicle lamp body outside, and heat pipe evaporator section and heat pipe condenser section are one-body molded; Described radiator is fixed on rear portion, vehicle lamp body outside, and top is the heat radiator fin being arranged in parallel, and the region of leaving a blank in below is radiator flat part;
Described each LED integrated optical source is arranged on respectively the one side of a light source bracket, light source bracket another side is fixed on the top of the heat pipe evaporator section corresponding with this LED integrated optical source, each heat pipe condenser section is parallel to radiator place plane, and along being welded as a whole with heat radiator fin successively with heat radiator fin vertical direction, adjacent two heat pipe condenser sections are parallel to each other; Described combining jet device is fixed on the central authorities of radiator flat part, and temperature sensor and one of them LED integrated optical source are installed on light source bracket side by side; Temperature sensor transmission line is connected to the temperature reading circuit interface end of single-chip microcomputer and drive circuit box through car light back cover, and the combining jet device power control terminal of single-chip microcomputer and drive circuit box joins with combining jet device, LED power driving circuit in single-chip microcomputer and drive circuit box joins with each LED integrated optical source, master control end is connected with the central controller of automobile.
Compared with prior art, its remarkable advantage is in the present invention: (1) this device serviceability temperature feedback control technology, in the unappeasable situation of the normal passive heat radiation of car light, just use active heat removal, and energy-conservation more economically; (2) combining jet device that active heat removal part is used, the flow level of its generation acts on heat radiator fin, is more conducive to distributing of fin heat; (3) compare with traditional fan, combining jet device has more powerful air-flow, and its working method is not shaft type electric machine rotation, does not have frictional dissipation, and longer service life is of a specified duration, and energy consumption is lower; (4) utilize hot pipe technique, synthesizing jet-flow technology to be combined cleverly with great power LED, effectively solve the heat radiation difficult problem of great power LED in automobile headlight illumination application, and simple in structure, easy for installation.
Four brief description of the drawings
Fig. 1 is the rearview of the heat abstractor of high-power LED car light of the present invention.
Fig. 2 is the front view of the heat abstractor of high-power LED car light of the present invention.
Fig. 3 is the top view of the heat abstractor of high-power LED car light of the present invention.
Fig. 4 is the left view of the heat abstractor of high-power LED car light of the present invention.
Wherein: 1 LED integrated optical source, 2 heat pipes, 2-1 heat pipe evaporator section, 2-2 heat pipe condenser section, 3 radiators, 3-1 heat radiator fin, 3-2 radiator flat part, 4 combining jet devices, 5 temperature sensors, 6 single-chip microcomputers and drive circuit box, 7 light source brackets
Five detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, the heat abstractor of a kind of high-power LED car light of the present invention, comprise radiator 3, combining jet device 4, temperature sensor 5, single-chip microcomputer and drive circuit box 6 and more than one LED integrated optical source 1, the described respectively corresponding heat pipe 2 of each LED integrated optical source 1; Described heat pipe 2 is divided into the heat pipe evaporator section 2-1 of vehicle lamp body inside and the heat pipe condenser section 2-2 of vehicle lamp body outside, and heat pipe evaporator section 2-1 and heat pipe condenser section 2-2 are one-body molded; Described radiator 3 is fixed on rear portion, vehicle lamp body outside, and top is the heat radiator fin 3-1 being arranged in parallel, and the region of leaving a blank in below is radiator flat part 3-2;
Described each LED integrated optical source 1 is arranged on respectively the one side of a light source bracket 7, light source bracket 7 another sides are fixed on the top of the heat pipe evaporator section 2-1 corresponding with this LED integrated optical source 1, each heat pipe condenser section 2-2 is parallel to radiator 3 place planes, and along being welded as a whole with heat radiator fin 3-1 successively with heat radiator fin 3-1 vertical direction, adjacent two heat pipe condenser sections are parallel to each other; Described combining jet device 4 is fixed on the central authorities of radiator flat part 3-2, and temperature sensor 5 is installed on light source bracket 7 side by side with one of them LED integrated optical source 1; Temperature sensor 5 transmission lines are connected to the temperature reading circuit interface end of single-chip microcomputer and drive circuit box 6 through car light back cover, and the combining jet device power control terminal of single-chip microcomputer and drive circuit box 6 joins with combining jet device 4, LED power driving circuit in single-chip microcomputer and drive circuit box 6 joins with each LED integrated optical source 1, master control end is connected with the central controller of automobile.
Single-chip microcomputer of the present invention and drive circuit box 6 comprise temperature reading circuit, combining jet device power circuit, LED power driving circuit, and these three circuit are all connected with the single-chip microcomputer in single-chip microcomputer and drive circuit box 6.Light source bracket 7 is oblate, and oblate major axis edge leaves screw hole, is used for fixing respectively heat pipe evaporator section 2-1 and temperature sensor 5.The shape of heat pipe 2 can need to bend layout according to Vehicle lamp structure.Heat pipe evaporator section 2-1 is the flattened cylindrical shape structure of copper metal material, and leaves with light source bracket 7 and fix the screw hole of use.The air-flow that combining jet device 4 produces is along the fin direction of the 3-1 of heat radiator fin portion.Combining jet device 4 is fixed by screws in the central authorities of radiator flat part 3-2.Temperature sensor 5 is with holes laminar, is screwed in light source bracket 7.
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, the heat abstractor of a kind of high-power LED car light of the present invention, comprise radiator 3, combining jet device 4, temperature sensor 5, single-chip microcomputer and drive circuit box 6 and more than one LED integrated optical source 1, the described respectively corresponding heat pipe 2 of each LED integrated optical source 1; Described heat pipe 2 is divided into the heat pipe evaporator section 2-1 of vehicle lamp body inside and the heat pipe condenser section 2-2 of vehicle lamp body outside, and heat pipe evaporator section 2-1 and heat pipe condenser section 2-2 are one-body molded; Described radiator 3 is fixed on rear portion, vehicle lamp body outside, and top is the heat radiator fin 3-1 being arranged in parallel, and the region of leaving a blank in below is radiator flat part 3-2;
Each LED integrated optical source 1 is arranged on respectively the one side of a light source bracket 7, light source bracket 7 another sides are fixed on the top of the heat pipe evaporator section 2-1 corresponding with this LED integrated optical source 1, each heat pipe condenser section 2-2 is parallel to radiator 3 place planes, and along being welded as a whole with heat radiator fin 3-1 successively with heat radiator fin 3-1 vertical direction, adjacent two heat pipe condenser sections are parallel to each other; Described combining jet device 4 is fixed on the central authorities of radiator flat part 3-2, and temperature sensor 5 is installed on light source bracket 7 side by side with one of them LED integrated optical source 1; Temperature sensor 5 transmission lines are connected to the temperature reading circuit interface end of single-chip microcomputer and drive circuit box 6 through car light back cover, and the combining jet device power control terminal of single-chip microcomputer and drive circuit box 6 joins with combining jet device 4, LED power driving circuit in single-chip microcomputer and drive circuit box 6 joins with each LED integrated optical source 1, master control end is connected with the central controller of automobile.Described single-chip microcomputer and drive circuit box 6 comprise temperature reading circuit, combining jet device power circuit, LED power driving circuit, and these three circuit are all connected with the single-chip microcomputer in single-chip microcomputer and drive circuit box 6.
In conjunction with Fig. 1, the rearview of the heat abstractor of a kind of high-power LED car light of the present invention, the air-flow that combining jet device 4 produces is along the fin direction of the 3-1 of heat radiator fin portion.Combining jet device 4 is fixed by screws in the central authorities of radiator flat part 3-2.
In conjunction with Fig. 2, the front view of the heat abstractor of a kind of high-power LED car light of the present invention, temperature sensor 5 is with holes laminar, is screwed in light source bracket 7.Light source bracket 7 is oblate, and oblate major axis edge leaves screw hole, is used for fixing respectively heat pipe evaporator section 2-1 and temperature sensor 5.
In conjunction with Fig. 3, Fig. 4, the shape of heat pipe 2 can need to bend layout according to Vehicle lamp structure.Heat pipe evaporator section 2-1 is the flattened cylindrical shape structure of copper metal material, and leaves with light source bracket 7 and fix the screw hole of use.
The heat abstractor of a kind of high-power LED car light of the present invention, specific works flow process is as follows:
Carry out and open high-power LED car light when central vehicle controller, the master control termination collection of letters number in single-chip microcomputer and drive circuit box 6, single-chip microcomputer in single-chip microcomputer and drive circuit box 6 starts to enter duty, LED power driving circuit and LED integrated optical source 1 in single-chip microcomputer and drive circuit box 6 form path, and LED integrated optical source 1 is started working; The single-chip microcomputer of single-chip microcomputer and drive circuit box 6 starts the temperature value of reading temperature sensor 5 by temperature reading circuit interface end simultaneously, when the light-source temperature of LED integrated optical source 1 raises while reaching the default temperature upper limit of SCM program, the combining jet device power control terminal of single-chip microcomputer and drive circuit box 6 is opened combining jet device 4 and is worked, and combining jet device 4 starts to produce powerful air-flow cooling; In the time that the light-source temperature of LED integrated optical source 1 is reduced to the default lowest temperature of SCM program, the combining jet device power control terminal of single-chip microcomputer and drive circuit box 6 is closed combining jet device 4 and is worked; When the light-source temperature of LED integrated optical source 1 is in preset temperature range, the single-chip microcomputer of single-chip microcomputer and drive circuit box 6 only keeps reading temperature value, do not carry out corresponding operating, now car light only needs passive just enough coolings of outside driving air-flow, and does not need active heat removal.
Car in the process of moving, the air stream producing acts on fin radiator cooling, when car stops and car light is still normally lighted, now there is no relative driving air-flow, vehicle lamp light source temperature can raise, may cause for a long time the too high inefficacy of LED light source junction temperature if do not take measures, the temperature sensor Real-Time Monitoring temperature of this device, once if exceed default temperature spot, single-chip microcomputer is just opened combining jet device work automatically, strong micro-gaseous blast that ejector produces can act on fin radiator at once, by reducing the temperature of heat pipe condenser section temperature and then reduction LED light source, it is controlled in virtual junction temperature, thereby guarantee LED car headlamp is worked steadily in the long term.
Claims (8)
1. the heat abstractor of a high-power LED car light, it is characterized in that: comprise radiator (3), combining jet device (4), temperature sensor (5), single-chip microcomputer and drive circuit box (6) and more than one LED integrated optical source (1), each respectively corresponding heat pipe of described LED integrated optical source (1) (2); Described heat pipe (2) is divided into the heat pipe evaporator section (2-1) of vehicle lamp body inside and the heat pipe condenser section (2-2) of vehicle lamp body outside, and heat pipe evaporator section (2-1) and heat pipe condenser section (2-2) are one-body molded; Described radiator (3) is fixed on rear portion, vehicle lamp body outside, and top is the heat radiator fin (3-1) being arranged in parallel, and the region of leaving a blank in below is radiator flat part (3-2);
Each described LED integrated optical source (1) is arranged on respectively the one side of a light source bracket (7) side by side, light source bracket (7) another side is fixed on the top of the heat pipe evaporator section (2-1) corresponding with this LED integrated optical source (1), each heat pipe condenser section (2-2) is parallel to radiator (3) place plane, and along being welded as a whole with heat radiator fin (3-1) successively with heat radiator fin (3-1) vertical direction, adjacent two heat pipe condenser sections are parallel to each other; Described combining jet device (4) is fixed on the central authorities of radiator flat part (3-2), and temperature sensor (5) is installed on light source bracket (7) side by side with one of them LED integrated optical source (1); Temperature sensor (5) transmission line is connected to the temperature reading circuit interface end of single-chip microcomputer and drive circuit box (6) through car light back cover, and the combining jet device power control terminal of single-chip microcomputer and drive circuit box (6) joins with combining jet device (4), LED power driving circuit in single-chip microcomputer and drive circuit box (6) joins with each LED integrated optical source (1), master control end is connected with the central controller of automobile.
2. the heat abstractor of a kind of high-power LED car light according to claim 1, it is characterized in that: described single-chip microcomputer and drive circuit box (6) comprise temperature reading circuit, combining jet device power circuit, LED power driving circuit, these three circuit are all connected with the single-chip microcomputer in single-chip microcomputer and drive circuit box (6).
3. the heat abstractor of a kind of high-power LED car light according to claim 1, it is characterized in that: described light source bracket (7) is for oblate, and oblate major axis edge leaves screw hole, be used for fixing respectively heat pipe evaporator section (2-1) and temperature sensor (5).
4. the heat abstractor of a kind of high-power LED car light according to claim 1, is characterized in that: the shape of described heat pipe (2) can need to bend layout according to Vehicle lamp structure.
5. the heat abstractor of a kind of high-power LED car light according to claim 1, it is characterized in that: the flattened cylindrical shape structure that described heat pipe evaporator section (2-1) is copper metal material, and leave the screw hole of fixing use with light source bracket (7).
6. the heat abstractor of a kind of high-power LED car light according to claim 1, is characterized in that: the air-flow that described combining jet device (4) produces is along the fin direction of heat radiator fin (3-1).
7. the heat abstractor of a kind of high-power LED car light according to claim 1, is characterized in that: described combining jet device (4) is fixed by screws in the central authorities of radiator flat part (3-2).
8. the heat abstractor of a kind of high-power LED car light according to claim 1, is characterized in that: described temperature sensor (5), for holes laminar, is screwed in light source bracket (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210443567.7A CN102944001B (en) | 2012-11-08 | 2012-11-08 | Heat radiating device of high-power LED (Light-emitting diode) car lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210443567.7A CN102944001B (en) | 2012-11-08 | 2012-11-08 | Heat radiating device of high-power LED (Light-emitting diode) car lamp |
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| Publication Number | Publication Date |
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| CN102944001A CN102944001A (en) | 2013-02-27 |
| CN102944001B true CN102944001B (en) | 2014-06-04 |
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| CN201210443567.7A Expired - Fee Related CN102944001B (en) | 2012-11-08 | 2012-11-08 | Heat radiating device of high-power LED (Light-emitting diode) car lamp |
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| CN105186620B (en) * | 2015-09-25 | 2018-09-18 | 江苏峰谷源储能技术研究院有限公司 | A kind of battery set charge/discharge control system of active heat removal |
| CN109671689B (en) * | 2018-12-24 | 2020-09-11 | 阳光电源股份有限公司 | Power semiconductor module protection method and protection system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201335345Y (en) * | 2008-12-26 | 2009-10-28 | 常州星宇车灯股份有限公司 | Heat radiation device for LED lamps of automobile |
| CN102102868A (en) * | 2010-11-18 | 2011-06-22 | 常州星宇车灯股份有限公司 | Large-power light emitting diode (LED) active radiating device for car lamp |
| CN102338363A (en) * | 2011-09-19 | 2012-02-01 | 浙江工业大学 | Split-type radiator for integrated high-power light-emitting diode (LED) automobile lamp |
| CN202973002U (en) * | 2012-11-08 | 2013-06-05 | 南京理工大学 | Radiating device for high-power LED (Light Emitting Diode) vehicle lamp |
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2012
- 2012-11-08 CN CN201210443567.7A patent/CN102944001B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201335345Y (en) * | 2008-12-26 | 2009-10-28 | 常州星宇车灯股份有限公司 | Heat radiation device for LED lamps of automobile |
| CN102102868A (en) * | 2010-11-18 | 2011-06-22 | 常州星宇车灯股份有限公司 | Large-power light emitting diode (LED) active radiating device for car lamp |
| CN102338363A (en) * | 2011-09-19 | 2012-02-01 | 浙江工业大学 | Split-type radiator for integrated high-power light-emitting diode (LED) automobile lamp |
| CN202973002U (en) * | 2012-11-08 | 2013-06-05 | 南京理工大学 | Radiating device for high-power LED (Light Emitting Diode) vehicle lamp |
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