CN103256581A - Heat dissipation system for LED headlamp of motor vehicle - Google Patents
Heat dissipation system for LED headlamp of motor vehicle Download PDFInfo
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- CN103256581A CN103256581A CN2013101598696A CN201310159869A CN103256581A CN 103256581 A CN103256581 A CN 103256581A CN 2013101598696 A CN2013101598696 A CN 2013101598696A CN 201310159869 A CN201310159869 A CN 201310159869A CN 103256581 A CN103256581 A CN 103256581A
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Abstract
The invention provides a heat dissipation system for an LED headlamp of a motor vehicle. The heat dissipation system comprises an LED lamp heat source, a temperature difference semiconductor electricity generating component module, a DC-DC voltage reducing circuit module and a radiator module, wherein the temperature difference semiconductor electricity generating component module comprises a cold end and a hot end, the radiator module comprises a heat dissipating piece and a direct-current fan, the LED lamp hot source is connected with the heat dissipating piece through a first hot pipe, the hot end of the temperature difference semiconductor electricity generating component module is connected with an engine hot source, the cold end of the temperature difference semiconductor electricity generating component module is further connected with the heat dissipating piece through a second hot pipe, and the temperature difference semiconductor electricity generating component module is further connected to the direct-current fan through the DC-DC voltage reducing circuit module. According to the heat dissipation system for the LED headlamp of the motor vehicle, energy produced by the hot source can be converted to electric energy, the electric energy is used by the heat dissipation system, and the heat dissipation system for the LED headlamp of the motor vehicle is environment-friendly, saves resources and is good in heat dissipation effect.
Description
[technical field]
The present invention relates to a kind of motor vehicle LED headlight cooling system.
[background technology]
Front headlight of motor vehicle also claims automotive headlight, is to be the main lighting apparatus of motor vehicle.Because the lamp housing internal-external temperature difference is big, for the consideration that prevents that envelope inner wall from hazing, the headlight lamp housing generally is airtight.Though the headlight lamp housing leaves little air-vent or vent valve balance inner and outer air pressure, its radiating effect is extremely limited.One of subject matter that the application of LED technology on headlight on the automobile exists is exactly light decay and the permanent damage that airtight lamp housing causes temperature to raise LED is caused, and the great power LED that can be directly used in front headlight of motor vehicle (generate heat low, heat-resisting good, light decay is low) at present is often expensive.
The radiating mode of headlight is except by air-vent or the passive heat radiation of vent valve, also has at lamp housing design fin to carry out passive heat radiation and heat pipe for thermal conductivity to external fin and install wind-cooling heat dissipating equipment additional at fin realizing active heat removal.The headlight lamp housing is an airtight relatively environment, though inner air and outer air is mobile to have improved radiating efficiency by strengthening in heat dissipation design, because internal-external temperature difference is bigger, the probability of airborne water condensation on lamp housing also increases greatly, influences the illuminating effect of headlight.
In addition, the radiator of motor vehicle in use, its power source generally is directed to the vehicular power-bottle of motor vehicle, therefore when motor vehicles parking, may cause the LED lamp overheated if stop power supply, if but continue power supply, probably cause storage battery to owe the problem of electricity, and cause the waste of resource.
[summary of the invention]
The technical problem to be solved in the present invention is to provide a kind of motor vehicle LED headlight cooling system, and the power conversion that thermal source can be produced become electric energy, for the cooling system use, and not only environmental protection but also economize on resources; And radiating effect is good.
The present invention is achieved in that
A kind of motor vehicle LED headlight cooling system, described cooling system comprises a LED lamp thermal source, one semiconductor thermoelectric generating element module, one DC-DC reduction voltage circuit module and a heat spreader module, described semiconductor thermoelectric generating element module comprises a cold junction and a hot junction, described heat spreader module comprises fin and a DC fan, described LED lamp thermal source links to each other with fin by one first heat pipe, the hot junction of described semiconductor thermoelectric generating element module links to each other with an engine thermal source, the cold junction of described semiconductor thermoelectric generating element module also links to each other with fin by one second heat pipe, and described semiconductor thermoelectric generating element module also is connected to DC fan by described DC-DC reduction voltage circuit module.
Further, the input of described DC-DC reduction voltage circuit module links to each other with the output of semiconductor thermoelectric generating element module, the output of described DC-DC reduction voltage circuit module links to each other with DC fan, and after the output end voltage of described DC-DC reduction voltage circuit module passed through a resistance R 1 and a resistance R 2 dividing potential drops, the intermediate point of resistance R 1 and resistance R 2 lines linked to each other with the test side of pwm signal controller.
The present invention has following advantage:
The power source of DC fan of the present invention does not namely influence the vehicle power of motor vehicle from the heat of thermal source, can save the energy again; Not only environmental protection but also energy-conservation; In addition, when heat energy is not enough, can directly dispel the heat by fin, dual heat dissipation equipment makes radiating effect more excellent, and efficient is higher; In addition, the present invention is simple in structure, stable performance, and market application foreground is big.
[description of drawings]
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is structure of block diagram schematic diagram of the present invention.
Fig. 2 is the circuit diagram of DC-DC reduction voltage circuit module of the present invention.
[specific embodiment]
See also illustrated in figures 1 and 2ly, embodiments of the invention are described in detail.
The present invention relates to a kind of motor vehicle LED headlight cooling system, described cooling system comprises a LED lamp thermal source, 1 one semiconductor thermoelectric generating element modules 2, one DC-DC reduction voltage circuit module 3 and a heat spreader module 4, described semiconductor thermoelectric generating element module 2 comprises a cold junction and a hot junction, described heat spreader module 4 comprises fin 41 and a DC fan 42, described LED lamp thermal source 1 links to each other with fin 41 by one first heat pipe 5, the hot junction of described semiconductor thermoelectric generating element module 2 links to each other with an engine thermal source 10, the cold junction of described semiconductor thermoelectric generating element module 2 also links to each other with fin 41 by one second heat pipe 6, and described semiconductor thermoelectric generating element module 2 also is connected to DC fan 42 by described DC-DC reduction voltage circuit module 3.
As shown in Figure 2, the input both positive and negative polarity of described DC-DC reduction voltage circuit module 3 links to each other with the output positive and negative charge of semiconductor thermoelectric generating element module 2, the output positive and negative charge of described DC-DC reduction voltage circuit module 3 links to each other with DC fan 42 both positive and negative polarities, and after the output end voltage of described DC-DC reduction voltage circuit module 3 passed through a resistance R 1 and a resistance R 2 dividing potential drops, the intermediate point of resistance R 1 and resistance R 2 lines linked to each other with the test side of pwm signal controller.
Among Fig. 2, the DC-DC reduction voltage circuit module of present embodiment is made of FET Q, sustained diode, inductance L, capacitor C, and divides force feed PWM controller to realize close loop negative feedback by resistance R 1 and resistance R 2 ratios, realizes that output voltage stabilization is adjustable.
Operation principle is as follows:
When 10 onsets of engine thermal source, the heat of engine thermal source 10 is delivered to cold junction by the hot junction of semiconductor thermoelectric generating element module 2, the cold junction of semiconductor thermoelectric generating element module 2 dispels the heat heat delivery to fin 41 by second heat pipe 6, then by first heat pipe heat delivery to fin 41 is dispelled the heat when 1 onset of LED lamp thermal source; When the heat of engine thermal source 10 hangs down, when the electric weight that semiconductor thermoelectric generating element module 2 produces is low, the power of DC-DC reduction voltage circuit module 3 outputs is less than the starting power of DC fan 42, and DC fan 42 is not worked, and the entire heat dissipation system only carries out passive heat radiation by fin 41; When the heat that produces when engine thermal source 10 is big, the power of DC-DC reduction voltage circuit module 3 outputs is more than or equal to the starting power of DC fan 42, active heat removal is carried out in DC fan 42 onsets, fin 41 also carries out heat radiation work simultaneously, active heat removal and passive heat radiation are carried out simultaneously, good heat dissipation effect, and radiating rate is fast, make the cold junction temperature of semiconductor thermoelectric generating element module 2 further descend, cold junction and warm end temperature difference strengthen, and semiconductor thermoelectric generating element module 2 power also further promote, and the rotating speed of DC fan 42 also and then increases, radiating efficiency also is further enhanced, and forms a benign cycle.
The power source of DC fan of the present invention does not namely influence the vehicle power of motor vehicle from the heat of thermal source, can save the energy again; Not only environmental protection but also energy-conservation; In addition, when heat energy is not enough, can directly dispel the heat by fin, dual heat dissipation equipment makes radiating effect more excellent, and efficient is higher; In addition, the present invention is simple in structure, stable performance, and market application foreground is big.
Though more than described the specific embodiment of the present invention; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present invention; those of ordinary skill in the art are in modification and the variation of the equivalence of doing according to spirit of the present invention, all should be encompassed in the scope that claim of the present invention protects.
Claims (2)
1. motor vehicle LED headlight cooling system, it is characterized in that: described cooling system comprises a LED lamp thermal source, one semiconductor thermoelectric generating element module, one DC-DC reduction voltage circuit module and a heat spreader module, described semiconductor thermoelectric generating element module comprises a cold junction and a hot junction, described heat spreader module comprises fin and a DC fan, described LED lamp thermal source links to each other with fin by one first heat pipe, the hot junction of described semiconductor thermoelectric generating element module links to each other with an engine thermal source, the cold junction of described semiconductor thermoelectric generating element module also links to each other with fin by one second heat pipe, and described semiconductor thermoelectric generating element module also is connected to DC fan by described DC-DC reduction voltage circuit module.
2. a kind of motor vehicle LED headlight cooling system according to claim 1, it is characterized in that: the input of described DC-DC reduction voltage circuit module links to each other with the output of semiconductor thermoelectric generating element module, the output of described DC-DC reduction voltage circuit module links to each other with DC fan, and after the output end voltage of described DC-DC reduction voltage circuit module passed through a resistance R 1 and a resistance R 2 dividing potential drops, the intermediate point of resistance R 1 and resistance R 2 lines linked to each other with the test side of pwm signal controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101598696A CN103256581A (en) | 2013-05-03 | 2013-05-03 | Heat dissipation system for LED headlamp of motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101598696A CN103256581A (en) | 2013-05-03 | 2013-05-03 | Heat dissipation system for LED headlamp of motor vehicle |
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| Publication Number | Publication Date |
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| CN103256581A true CN103256581A (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101598696A Pending CN103256581A (en) | 2013-05-03 | 2013-05-03 | Heat dissipation system for LED headlamp of motor vehicle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015407A (en) * | 2015-08-12 | 2015-11-04 | 河北工业大学 | Automobile daytime running light |
| CN105101757A (en) * | 2015-09-11 | 2015-11-25 | 上海斐讯数据通信技术有限公司 | Method and system for cooling intelligent terminal |
| CN105429510A (en) * | 2015-11-30 | 2016-03-23 | 河南工程学院 | Engine cooling system energy recovery apparatus and method based on heat pipe technology |
| CN111578221A (en) * | 2020-05-17 | 2020-08-25 | 济南得德环保科技有限公司 | Car headlight assembly and radiating LED headlight bulb of semiconductor refrigeration thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001345486A (en) * | 2000-06-01 | 2001-12-14 | Daikin Ind Ltd | Electronic cooling system |
| CN1673497A (en) * | 2004-03-22 | 2005-09-28 | 丰田自动车株式会社 | Exhaust heat recovery system |
| CN101225946A (en) * | 2008-01-22 | 2008-07-23 | 西安交通大学 | LED lighting device capable of recovery heat |
| CN201232866Y (en) * | 2008-07-29 | 2009-05-06 | 北京恒基伟业投资发展有限公司 | Semiconductor temperature differential assembly power generation table lamp |
-
2013
- 2013-05-03 CN CN2013101598696A patent/CN103256581A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001345486A (en) * | 2000-06-01 | 2001-12-14 | Daikin Ind Ltd | Electronic cooling system |
| CN1673497A (en) * | 2004-03-22 | 2005-09-28 | 丰田自动车株式会社 | Exhaust heat recovery system |
| CN101225946A (en) * | 2008-01-22 | 2008-07-23 | 西安交通大学 | LED lighting device capable of recovery heat |
| CN201232866Y (en) * | 2008-07-29 | 2009-05-06 | 北京恒基伟业投资发展有限公司 | Semiconductor temperature differential assembly power generation table lamp |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015407A (en) * | 2015-08-12 | 2015-11-04 | 河北工业大学 | Automobile daytime running light |
| CN105015407B (en) * | 2015-08-12 | 2018-10-19 | 河北工业大学 | A kind of automobile daytime running lights |
| CN105101757A (en) * | 2015-09-11 | 2015-11-25 | 上海斐讯数据通信技术有限公司 | Method and system for cooling intelligent terminal |
| CN105429510A (en) * | 2015-11-30 | 2016-03-23 | 河南工程学院 | Engine cooling system energy recovery apparatus and method based on heat pipe technology |
| CN111578221A (en) * | 2020-05-17 | 2020-08-25 | 济南得德环保科技有限公司 | Car headlight assembly and radiating LED headlight bulb of semiconductor refrigeration thereof |
| CN111578221B (en) * | 2020-05-17 | 2021-11-23 | 广州杰创实业有限公司 | Car headlight assembly and radiating LED headlight bulb of semiconductor refrigeration thereof |
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Application publication date: 20130821 |