CN201425235Y - Projection-type large-power LED automobile dipped headlight - Google Patents
Projection-type large-power LED automobile dipped headlight Download PDFInfo
- Publication number
- CN201425235Y CN201425235Y CN200920039171XU CN200920039171U CN201425235Y CN 201425235 Y CN201425235 Y CN 201425235Y CN 200920039171X U CN200920039171X U CN 200920039171XU CN 200920039171 U CN200920039171 U CN 200920039171U CN 201425235 Y CN201425235 Y CN 201425235Y
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- Prior art keywords
- projection
- power led
- control module
- dipped headlight
- led automobile
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- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 abstract 4
- 238000001914 filtration Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Abstract
The utility model relates to a projection-type large-power LED automobile dipped headlight, the lower part of the light body (10) is provided with a circuit control module (9), the middle is providedwith a light distribution shaping board (5), and the top is provided with an optical lens (1), the optical lens (1) is fixed at the upper part of a lens support (2), the light distribution shaping board (5) is arranged on the lower end of the lens support (2), a main reflection surface (4) is arranged on the bottom surface of the light distribution shaping board (5), an auxiliary reflection surface (3) is arranged on the light distribution shaping board (5), and an LED light source (6) is arranged on an auxiliary radiator (7). A control circuit comprises an input unit, a control unit, a current output unit and a voltage sampling feedback unit. In the projection-type large-power LED automobile dipper headlight, the light given out by the LED light source is secondarily distributed, therebythe two difficulties of radiating and light distribution are solved, the luminous efficiency is high, the light source is uniform and mild, the service life is improved by 4 to 5 times, and the lighting in front of the road and the high-speed driving are more facilitated.
Description
Technical field
The utility model relates to the automotive semiconductor lighting field, says it is about a kind of projection-type high-power LED automobile dipped headlight definitely.
Technical background
At present, automotive lighting adopts halogen tungsten lamp or HID light source more.And LED illumination has become the best light source of alternative conventional light source of 21st century with characteristics such as its high brightness that has, low-power consumption, long service life, colour rendering are good.LED was widely used on automobile signal light in recent years.And as automotive lighting, also be in the development phases such as technical identification, concept car displaying in the world, try out beginning in the high end configuration of the U.S. and Japan at present, but what wherein adopt is the method for designing of multimode group and poly-lens group, this makes its structure very complicated, and cost is very high; Domestic LED automotive lighting still is in the research of technique stage, the industrialization of still being unrealized.Main difficult point is to fail to obtain on the key technologies such as great power LED cooling, luminous intensity distribution, power management to break through.
Summary of the invention
In order to overcome above defective, the purpose of this utility model is to provide a kind of projection-type high-power LED automobile dipped headlight, adopt the high-power LED automobile dipped headlight of a led light source, secondary light-distribution, one group of auxiliary heat dissipation system, formation, both satisfy standard-required, can reduce the cost of product again.
The technical solution of the utility model realizes in the following manner: a kind of projection-type high-power LED automobile dipped headlight, comprise optical lens, lens carrier, led light source, circuit control module and lamp body, the bottom of described lamp body is provided with the circuit control module, the middle part is provided with the luminous intensity distribution profiled sheeting, the optical lens that the top is provided with, optical lens is fixed on the top of lens carrier, the luminous intensity distribution profiled sheeting is arranged on the lower end of lens carrier, it is characterized in that: the bottom surface of described luminous intensity distribution profiled sheeting is provided with primary reflection surface, be provided with subreflector above, led light source be arranged on secondary radiator above.
The top of above-mentioned circuit control module also is provided with auxiliary heat dissipation fan and secondary radiator.
The control circuit of above-mentioned circuit control module mainly is made up of input block, control module, current output unit, voltage sampling feedback unit.
Above-mentioned input block is by reverse-connection preventing circuit, and anti-interference buffer circuit is formed.
Above-mentioned control module mainly is made up of the PWM on-off circuit.
Above-mentioned current output unit mainly is made up of built-in mosfet transistor.
Above-mentioned voltage sampling feedback unit mainly by the faint variation of electric current convert to voltage and in addition accurate amplify to handle feed back to control module.
Adopt the utility model, the light that led light source sends has solved heat radiation, luminous intensity distribution two hang-ups by secondary light-distribution, the luminous efficiency height, and light source is even, soft, improves 4-5 service life doubly, helps the illumination and the scorch in road the place ahead more.The operating frequency of control circuit is about 5000 kilo hertzs, make external voltage change when three kilovolts of output up and down the time electric current can both be precise and stable at 3.8 amperes, error in 3%.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the block diagram of control circuit of the present utility model.
The specific embodiment
Know by Fig. 1, it is the projection-type high-power LED automobile dipped headlight of present embodiment, comprise optical lens 1, lens carrier 2, led light source 6, circuit control module 9 and lamp body 10, the bottom of described lamp body 10 is provided with circuit control module 9, the middle part is provided with luminous intensity distribution profiled sheeting 5, the optical lens 1 that the top is provided with, optical lens 1 is fixed on the top of lens carrier 2, luminous intensity distribution profiled sheeting 5 is arranged on the lower end of lens carrier 2, the bottom surface of luminous intensity distribution profiled sheeting 5 is provided with primary reflection surface 4, be provided with subreflector 3 above, led light source 6 be arranged on secondary radiator 7 above.The top of circuit control module 9 is provided with auxiliary heat dissipation fan 8 and secondary radiator 7, is used to solve the heat dissipation problem that led light source sends.Control circuit module 9 links together by lead and led light source 6, and protects power supply for led light source 6 provides based on the constant current of 12V or 24V.
Being known by Fig. 2, is control circuit block diagram of the present utility model.This control circuit mainly is made up of input block, control module, current output unit, voltage sampling feedback unit.Input block is mainly by reverse-connection preventing circuit, and anti-interference buffer circuit is formed, wiring error when preventing to embed the automobile circuit system and the inefficacy that causes and to the interference to this power supervisor operate as normal of the interference of outside line system and external interference signals.
Control module mainly is made up of the PWM on-off circuit, and this circuit work frequency is about 500 kilo hertzs, when making external voltage change about dog days, and the constant numerical value of output current at needs, error is in 3%.
Current output unit mainly is made up of built-in mosfet transistor, temperature rise when internal resistance that it is extremely low and high switching characteristic are enough to control whole assembly work and obtain good temperature characterisitic and voltage-current characteristic, thus make that the efficient performance of LED is ensured.
The voltage sampling feedback unit mainly by the faint variation of electric current convert to voltage and in addition accurate amplify to handle feed back to control module; The voltage controlled oscillator of control module is accurately controlled the operating frequency of PWM, the accurate then also electric current of constant whole parts.
The course of work: the light part that light source sends by luminous intensity distribution profiled sheeting 5 filtration and the refraction of optical lens 1 after directly send; Another part light sends after the refraction of the filtration of luminous intensity distribution profiled sheeting 5 and optical lens 1 from primary reflection surface 4 reflections; The first reflection of third part light by subreflector 3 after the reflection second time of primary reflection surface 4, sends after the refraction of filtration by luminous intensity distribution profiled sheeting 5 and optical lens 1 again.
Claims (7)
1, a kind of projection-type high-power LED automobile dipped headlight, comprise optical lens (1), lens carrier (2), led light source (6), circuit control module (9) and lamp body (10), the bottom of described lamp body (10) is provided with circuit control module (9), the middle part is provided with luminous intensity distribution profiled sheeting (5), the optical lens that the top is provided with (1), optical lens (1) is fixed on the top of lens carrier (2), luminous intensity distribution profiled sheeting (5) is arranged on the lower end of lens carrier (2), it is characterized in that: the bottom surface of described luminous intensity distribution profiled sheeting (5) is provided with primary reflection surface (4), be provided with subreflector (3) above, led light source (6) be arranged on secondary radiator (7) above.
2, a kind of projection-type high-power LED automobile dipped headlight according to claim 1 is characterized in that: described circuit control module (9) top also is provided with auxiliary heat dissipation fan (8) and secondary radiator (7).
3, a kind of projection-type high-power LED automobile dipped headlight according to claim 1 is characterized in that: the control circuit of described circuit control module (9) is made up of input block, control module, current output unit and voltage sampling feedback unit.
4, a kind of projection-type high-power LED automobile dipped headlight according to claim 3 is characterized in that: described input block is by reverse-connection preventing circuit, and anti-interference buffer circuit is formed.
5, a kind of projection-type high-power LED automobile dipped headlight according to claim 3, it is characterized in that: described control module is made up of the PWM on-off circuit.
6, a kind of projection-type high-power LED automobile dipped headlight according to claim 3, it is characterized in that: described current output unit is made up of built-in mosfet transistor.
7, a kind of projection-type high-power LED automobile dipped headlight according to claim 3 is characterized in that: described voltage sampling feedback unit by the faint variation of electric current convert to voltage and in addition accurate amplify to handle feed back to control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920039171XU CN201425235Y (en) | 2009-04-28 | 2009-04-28 | Projection-type large-power LED automobile dipped headlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920039171XU CN201425235Y (en) | 2009-04-28 | 2009-04-28 | Projection-type large-power LED automobile dipped headlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201425235Y true CN201425235Y (en) | 2010-03-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920039171XU Expired - Lifetime CN201425235Y (en) | 2009-04-28 | 2009-04-28 | Projection-type large-power LED automobile dipped headlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201425235Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453421A (en) * | 2013-08-27 | 2013-12-18 | 郑州科仪科贸有限公司 | Composite near-far light integrated light source assembly |
| WO2019024418A1 (en) * | 2017-08-01 | 2019-02-07 | 深圳市暗能量电源有限公司 | Far-near light integrated vehicle-mounted control system |
-
2009
- 2009-04-28 CN CN200920039171XU patent/CN201425235Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453421A (en) * | 2013-08-27 | 2013-12-18 | 郑州科仪科贸有限公司 | Composite near-far light integrated light source assembly |
| WO2019024418A1 (en) * | 2017-08-01 | 2019-02-07 | 深圳市暗能量电源有限公司 | Far-near light integrated vehicle-mounted control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100317 |
|
| CX01 | Expiry of patent term |