CN102954424A - Automobile LED (light emitting diode) high-beam headlamp - Google Patents

Automobile LED (light emitting diode) high-beam headlamp Download PDF

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Publication number
CN102954424A
CN102954424A CN2012104313716A CN201210431371A CN102954424A CN 102954424 A CN102954424 A CN 102954424A CN 2012104313716 A CN2012104313716 A CN 2012104313716A CN 201210431371 A CN201210431371 A CN 201210431371A CN 102954424 A CN102954424 A CN 102954424A
Authority
CN
China
Prior art keywords
led
heat
reflector
unit
processing unit
Prior art date
Application number
CN2012104313716A
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Chinese (zh)
Inventor
汪华生
Original Assignee
常州市五一灯具有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 常州市五一灯具有限公司 filed Critical 常州市五一灯具有限公司
Priority to CN2012104313716A priority Critical patent/CN102954424A/en
Publication of CN102954424A publication Critical patent/CN102954424A/en

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Abstract

The invention relates to the technical field of automobile illumination lamps, in particular to an automobile LED (light emitting diode) high-beam headlamp, which comprises a headlamp casing, a semicircular reflector bowl, a heat guide bracket and a driving circuit, wherein the reflector bowl is arranged in the headlamp casing, the heat guide bracket has a heat guide function, one end of the heat guide bracket penetrates through the reflector bowl and is positioned in a reflective area of the reflector bowl, the other end of the heat guide bracket is positioned on the back side of the reflector bowl, the heat guide bracket in the reflective area of the reflector bowl is provided with an LED luminous body, a light axis line emitted by the LED luminous body is vertical to an axis line of the reflector bowl, and the driving circuit is used for driving the LED luminous light to work at constant current. The automobile LED high-beam headlamp has the advantage that the LED is used as a luminous source, so the power consumption is low, the brightness is high, the service life is long, and the waste on the light emitted by the LED luminous source can be reduced.

Description

The automobile LED high beam
Technical field
The present invention relates to the automobile lighting lamp technical field, be specifically related to a kind of automobile LED high beam.
Background technology
Existing car light adopts based on halogen bulb or HID as light source, adopt these as the car light light emitting source, power consumption is large, luminance difference, easily damage after use a period of time, service life is short, and the light that existing light emitting source sends waste is more serious, namely the light that sends of light emitting source with throw inconsistent according to direction and just directly do not throw away through reflector is reflective.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of automobile LED high beam, it adopts LED as light emitting source, and is low in energy consumption, brightness is high, long service life, and can reduce the waste of LED light emitting source output light.
Realize that technical scheme of the present invention is as follows:
The automobile LED high beam, comprise lamp housing, and be arranged on semicircular reflector in the lamp housing, and one end pass reflector and be in the reflector reflective areas, the other end is positioned at the heat conduction support that the reflector back side has conductive force, heat conduction support in the reflector reflective areas is provided with the LED illuminator, and it is vertical with the axial line of reflector that described LED illuminator penetrates the light axial line, and this LED high beam also comprises the drive circuit of constant-current driving LED illuminator work.
The described heat conduction support that is positioned at the reflector back side has been wholely set heat-conducting block, be fixedly installed on the heat-conducting block reflector is formed the bracing frame that supports, and one end be positioned at lamp housing and heat-conducting block fits tightly, the other end passes the heat pipe that lamp housing is positioned at the lamp housing outside, is positioned on the heat pipe of lamp housing outside to be provided with radiating fin.Reflector can be fixedly installed on the bracing frame, bracing frame holds up reflector, bracing frame can also be with the heat transferred heat-conducting block on the reflector simultaneously, same heat conduction support can be with the heat transferred heat-conducting block of LED illuminator, these heats dispel the heat by the radiating fin that heat-conducting block, heat pipe are delivered to the lamp housing outside again, and this kind good heat dissipation effect, efficient are high.
Described heat pipe passes the position of lamp housing and adopts corrugated sheet rubber to connect, and the middle part of described sheet rubber is enclosed within on the heat pipe, and both sides are stuck on the lamp housing body wall by bayonet socket, forms sealing; Play the effect of water proof and dust proof.
Be provided with on the described heat-conducting block heat pipe is pressed on radiating fin on the heat-conducting block; This structure is in heat radiation perfect condition or the less situation of LED power, dispels the heat by this radiating fin, also can be used as the auxiliary heat dissipation of pipe heat conducting pipe heat radiation structure.
Described heat pipe comprises sealed at both ends vacuum tube, and is arranged on the inner core that is covered with hole in the vacuum tube, is filled with heat transport medium in the described vacuum tube.Heat transport medium hotter place vaporization in heat pipe is absorbed heat, colder place carries out liquidation exothermic reaction in the heat transport medium arrival heat pipe of vaporization, be back to the higher place of temperature along hole after the liquefaction, go round and begin again, thereby efficiently heat is conducted to cold junction from the hot junction.
Described drive circuit comprises controlled processing unit, and the current feedback unit that connects load LED and the electric current of input load LED is detected, described current feedback unit sends the load LED current information that detects to controlled processing unit, controlled processing unit according to the current feedback unit inspection to load LED current information relatively regulate the electric current of being defeated by load LED with setting value; And the output detections unit that open circuit or short circuit are detected in real time, during to open circuit or short circuit, in time send the signal of closing output to controlled processing unit at the output detections unit inspection.When output detections unit inspection during to open circuit or short circuit, to controlled processing unit, controlled processing unit is then closed output with short circuit or open-circuit signaling, in order to avoid output abnormality, guarantees the safety of circuit.
The output of described current feedback unit output, output detections unit and connect one or the door input, described or the door output be connected with controlled processing unit.In the situation that the current feedback unit inspection is to output current severely subnormal or output detections unit inspection during to open circuit or short circuit, these two kinds of situations any when occuring, controlled processing unit just can stop the work of self, the protection load.
Drive circuit comprises that also the electric current to the input control processing unit carries out the input filter unit of filtering; And the output filtering unit that the electric current of controlled processing unit output is carried out filtering.Input current is eliminated interference wherein through the input filter unit, purifies the electric current of input control processing unit; The output filtering unit is mainly used in eliminating the controlled processing unit output ripple and provides pure DC current for load.
Drive circuit also comprises the voltage input protection unit that the voltage to the input control processing unit detects.If had high pressure (such as thunderbolt, static) in the input current or cross under the low voltage condition, then input is closed in voltage input protection unit, until channel status recovers in the normal side of voltage.
Drive circuit also comprises the temperature detecting unit that load temperature is detected, temperature detecting unit is transferred to controlled processing unit with the temperature signal that detects, and controlled processing unit compares the work of control circuit according to the temperature of the temperature signal that receives and setting.Detect the load temperature value outside the safe range of setting the time at temperature detecting unit, temperature detecting unit will send shutdown signal to controlled processing unit, and controlled processing unit is then closed output, until load temperature recovers normal.
Described current feedback unit is connected with the fine setting input that the current value of its feedback is regulated.Can regulate the feedback factor of current feedback unit by the fine setting input, thus the output of change system.
Adopted above-mentioned scheme, adopted LED as light emitting source, the power consumption of car light is prolonged low, brightness raising, service life; And LED illuminator ejaculation light axial line is vertical with the axial line of reflector, be that the light that sends of LED illuminator direction of axis line is vertical with the reflector direction of axis line, that is to say that LED illuminator horizontal mode is arranged in the retroreflective regions of reflector, LED illuminator top and medial surface send light and can all reflect away by the reflective surface of reflector like this, the situation that the light of having avoided the LED illuminator to send is not just exported through the reflection of reflector reflective surface greatly reduces the waste of LED illuminator output light; By current feedback unit inspection in the drive circuit load current information is detected in real time simultaneously, and the information that detects passed to controlled processing unit, controlled processing unit compares and in time the electric current of being defeated by load is adjusted the current information that receives and the current value of setting, thereby give constant drive current of load LED, drive circuit can drive the work of great power LED, and can provide constant drive current for great power LED, the constant current of satisfying great power LED drives requirement.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the theory diagram of drive circuit among the present invention;
In the accompanying drawing, 1 is lamp housing, and 2 is reflector, and 3 are the heat conduction support; 4 is the LED illuminator, and 5 is heat-conducting block, and 6 is bracing frame, and 7 is heat pipe; 8 is radiating fin, and 9 is sheet rubber, and 10 is bayonet socket, and 11 is radiating fin; 12 is the heat pipe briquetting, and 13 is controlled processing unit, and 14 is the current feedback unit, and 15 is the output detections unit; 16 are or door, and 17 is the input filter unit, and 18 is the output filtering unit; 19 is voltage input protection unit, and 20 is temperature detecting unit, and 21 are the fine setting input.
The specific embodiment
The present invention is further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, the automobile LED high beam, comprise lamp housing 1, and be arranged on semicircular reflector 2 in the lamp housing, and one end pass reflector and be in the reflector reflective areas, the other end is positioned at the heat conduction support 3 that the reflector back side has conductive force, heat conduction support 3 in the reflector reflective areas is provided with LED illuminator 4, it is vertical with the axial line of reflector that the LED illuminator penetrates the light axial line, that is to say that LED illuminator horizontal mode is arranged in the retroreflective regions of reflector, LED illuminator top and medial surface send light and can all reflect away by the reflective surface of reflector like this, the situation that the light of having avoided the LED illuminator to send is not just exported through the reflection of reflector reflective surface greatly reduces the waste of LED illuminator output light.
Wherein, the heat conduction support 3 that is positioned at the reflector back side has been wholely set heat-conducting block 5, be fixedly installed on the heat-conducting block reflector 2 is formed the bracing frame 6 that supports, bracing frame 6 is fixedly connected with reflector, thereby bracing frame 6 can hold up reflector 2, and one end be positioned at lamp housing and heat-conducting block 5 fits tightly, the other end passes the heat pipe 7 that lamp housing 1 is positioned at the lamp housing outside, is positioned on the heat pipe of lamp housing outside to be provided with radiating fin 8; Bracing frame 6 can also be with the heat transferred heat-conducting block 5 on the reflector like this, same heat conduction support 3 can be with the heat transferred heat-conducting block 5 of LED illuminator, these heats dispel the heat by the radiating fin 8 that heat-conducting block 5, heat pipe 7 are delivered to the lamp housing outside again, and this kind good heat dissipation effect, efficient are high.
Wherein, heat pipe 7 passes the position of lamp housing 1 and adopts corrugated sheet rubber 9 to connect, the middle part of sheet rubber is enclosed within on the heat pipe, both sides are stuck on lamp housing 1 wall by bayonet socket 10, form sealing, like this heat pipe produce rock time, can still guarantee the airtight and waterproof and dustproof performance that it is good with the junction maintenance of lamp body.
Wherein, be provided with at heat-conducting block 5 heat pipe 7 is pressed on radiating fin 11 on the heat-conducting block 5; Here can also adopt a heat pipe briquetting 12 that heat pipe is pressed on the heat-conducting block 5, this heat pipe briquetting 12 can be arranged to one with radiating fin 11; Certainly heat pipe briquetting 12 and heat-conducting block 5 can also be arranged to one, need only like this at heat-conducting block 5 and offer through hole with heat pipe 7 pore sizes, heat pipe is inserted in this through hole.
Wherein, heat pipe 7 comprises sealed at both ends vacuum tube, and is arranged on the inner core that is covered with hole in the vacuum tube, is filled with heat transport medium in the vacuum tube, and heat transport medium can be water, alcohol, ether etc.When car light is worked, the heat that reflector and LED illuminator produce is transferred to heat pipe by heat-conducting block, heat transport medium in the heat pipe is heated to vaporize and absorbs heat, the colder place that the heat transport medium of vaporization arrives in the outside heat pipe of lamp body carries out liquidation exothermic reaction, and distribute by radiating fin 8, continue heat absorption and be back to the heat pipe other end along the inner core hole after the liquefaction, go round and begin again.
Wherein, the faying face between heat conduction support 3 and the LED illuminator 4, the faying face between heat-conducting block 5 and the heat pipe 7 is filled heat-conducting medium 7; Heat-conducting medium selects that heat transfer efficiency is high, the heat conductive silicon grease material of good heat conduction effect or adopt heat conductive pad.Radiating fin 8, the radiating fin of radiating fin 11 for adopting metal material to make are such as the radiating fin of copper material, the radiating fin of aluminium material, the radiating fin of iron material matter, the radiating fin of silver-colored material etc.
Referring to Fig. 2, this LED high beam also comprises the drive circuit of constant-current driving LED illuminator work, this drive circuit can be arranged on the lamp housing outside or lamp housing inside is all passable, it comprises controlled processing unit 13, and the current feedback unit 14 that connects load LED and the electric current of input load LED is detected, current feedback unit 14 sends the load LED current information that detects to controlled processing unit 13, controlled processing unit 13 according to the current feedback unit inspection to load LED current information relatively regulate the electric current of being defeated by load LED with setting value; And the output detections unit 15 that open circuit or short circuit are detected in real time, during to open circuit or short circuit, in time send the signal of closing output to controlled processing unit at the output detections unit inspection.The output of current feedback unit 14 outputs, output detections unit also connects one or door 16 input, or the output of door is connected with controlled processing unit.
Wherein, drive circuit comprises that also the electric current to the input control processing unit carries out the input filter unit 17 of filtering; And the output filtering unit 18 that the electric current of controlled processing unit output is carried out filtering; And the voltage input protection unit 19 that the voltage of input control processing unit is detected; And the temperature detecting unit 20 that load temperature is detected, during implementation, adopt thermocouple that the temperature of load LED is taken a sample, temperature detecting unit 20 is transferred to controlled processing unit 13 with the temperature signal that detects, and controlled processing unit 13 compares the work of control circuit according to the temperature of the temperature signal that receives and setting.Current feedback unit 14 is connected with the fine setting input 21 that the current value of its feedback is regulated, and when the needs manual adjustments, just can adjust as required the input of fine setting input, changes the feedback factor of current feedback unit, thus the output of change system.This drive circuit can provide constant drive current with the Buck/Boost working method in wider voltage range, and comprises the function of output fine setting, over-voltage and over-current overheat protector.

Claims (10)

1. automobile LED high beam, comprise lamp housing, and be arranged on semicircular reflector in the lamp housing, it is characterized in that: and an end passes reflector and is in the reflector reflective areas, the other end is positioned at the heat conduction support that the reflector back side has conductive force, heat conduction support in the reflector reflective areas is provided with the LED illuminator, and it is vertical with the axial line of reflector that described LED illuminator penetrates the light axial line, and this LED high beam also comprises the drive circuit of constant-current driving LED illuminator work.
2. automobile LED high beam according to claim 1, it is characterized in that: the described heat conduction support that is positioned at the reflector back side has been wholely set heat-conducting block, be fixedly installed on the heat-conducting block reflector is formed the bracing frame that supports, and one end be positioned at lamp housing and heat-conducting block fits tightly, the other end passes the heat pipe that lamp housing is positioned at the lamp housing outside, is positioned on the heat pipe of lamp housing outside to be provided with radiating fin.
3. automobile LED high beam according to claim 2, it is characterized in that: described heat pipe passes the position of lamp housing and adopts corrugated sheet rubber to connect, the middle part of described sheet rubber is enclosed within on the heat pipe, and both sides are stuck on the lamp housing body wall by bayonet socket, forms sealing.
4. automobile LED high beam according to claim 2 is characterized in that: be provided with on the described heat-conducting block heat pipe is pressed on radiating fin on the heat-conducting block.
5. automobile LED high beam according to claim 2, it is characterized in that: described heat pipe comprises sealed at both ends vacuum tube, and is arranged on the inner core that is covered with hole in the vacuum tube, is filled with heat transport medium in the described vacuum tube.
6. automobile LED high beam according to claim 1, it is characterized in that: described drive circuit comprises controlled processing unit, and the current feedback unit that connects load LED and the electric current of input load LED is detected, described current feedback unit sends the load LED current information that detects to controlled processing unit, controlled processing unit according to the current feedback unit inspection to load LED current information relatively regulate the electric current of being defeated by load LED with setting value; And the output detections unit that open circuit or short circuit are detected in real time, during to open circuit or short circuit, in time send the signal of closing output to controlled processing unit at the output detections unit inspection.
7. automobile LED high beam according to claim 6 is characterized in that: the output of described current feedback unit output, output detections unit also connects one or the input of door, and output described or door is connected with controlled processing unit.
8. according to claim 6 or 7 described automobile LED high beams, it is characterized in that: drive circuit comprises that also the electric current to the input control processing unit carries out the input filter unit of filtering; And the output filtering unit that the electric current of controlled processing unit output is carried out filtering.
9. it is characterized in that according to claim 6 or 7 described automobile LED high beams: drive circuit also comprises the voltage input protection unit that the voltage to the input control processing unit detects.
10. according to claim 6 or 7 described automobile LED high beams, it is characterized in that: drive circuit also comprises the temperature detecting unit that load temperature is detected, temperature detecting unit is transferred to controlled processing unit with the temperature signal that detects, and controlled processing unit compares the work of control circuit according to the temperature of the temperature signal that receives and setting.
CN2012104313716A 2012-10-31 2012-10-31 Automobile LED (light emitting diode) high-beam headlamp CN102954424A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104654164A (en) * 2013-11-21 2015-05-27 丹阳市中远车灯有限公司 Automobile high-beam lamp

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CN201093292Y (en) * 2007-08-16 2008-07-30 大亿交通工业制造股份有限公司 LED car light cooling device
CN201434300Y (en) * 2009-07-09 2010-03-31 广州广日电气设备有限公司 LED headlamp of vehicle
CN201448718U (en) * 2009-05-15 2010-05-05 广州广日电气设备有限公司 LED headlamp
CN201661963U (en) * 2010-04-19 2010-12-01 兰普电器有限公司 Railway transit passenger car luminaire formed by LED flat luminous sources
KR20110112561A (en) * 2010-04-07 2011-10-13 이치코 고교가부시키가이샤 Headlight for vehicles
CN202274395U (en) * 2011-08-30 2012-06-13 浙江嘉利(丽水)工业有限公司 Headlamp of motorcycle
CN202303108U (en) * 2011-10-08 2012-07-04 芜湖罗比汽车照明系统有限公司 LED (Light-Emitting Diode) vehicle lamp with temperature protecting function
CN202902105U (en) * 2012-10-31 2013-04-24 常州市五一灯具有限公司 Automobile light-emitting diode (LED) high beam

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2057041U (en) * 1989-09-21 1990-05-09 巨争号 Over-voltage under-voltage and over-current protector for full-automatic refrigerator
JP2006156301A (en) * 2004-12-01 2006-06-15 Ichikoh Ind Ltd Vehicle headlight unit
CN101055154A (en) * 2006-04-14 2007-10-17 富准精密工业(深圳)有限公司 Heat pipe
CN201050722Y (en) * 2007-06-28 2008-04-23 鸿坤科技股份有限公司 Vehicular LED lamp set heat dissipation structure
CN201093292Y (en) * 2007-08-16 2008-07-30 大亿交通工业制造股份有限公司 LED car light cooling device
CN201448718U (en) * 2009-05-15 2010-05-05 广州广日电气设备有限公司 LED headlamp
CN201434300Y (en) * 2009-07-09 2010-03-31 广州广日电气设备有限公司 LED headlamp of vehicle
KR20110112561A (en) * 2010-04-07 2011-10-13 이치코 고교가부시키가이샤 Headlight for vehicles
CN201661963U (en) * 2010-04-19 2010-12-01 兰普电器有限公司 Railway transit passenger car luminaire formed by LED flat luminous sources
CN202274395U (en) * 2011-08-30 2012-06-13 浙江嘉利(丽水)工业有限公司 Headlamp of motorcycle
CN202303108U (en) * 2011-10-08 2012-07-04 芜湖罗比汽车照明系统有限公司 LED (Light-Emitting Diode) vehicle lamp with temperature protecting function
CN202902105U (en) * 2012-10-31 2013-04-24 常州市五一灯具有限公司 Automobile light-emitting diode (LED) high beam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104654164A (en) * 2013-11-21 2015-05-27 丹阳市中远车灯有限公司 Automobile high-beam lamp

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