CN105737052A - LED headlamp - Google Patents
LED headlamp Download PDFInfo
- Publication number
- CN105737052A CN105737052A CN201410757926.5A CN201410757926A CN105737052A CN 105737052 A CN105737052 A CN 105737052A CN 201410757926 A CN201410757926 A CN 201410757926A CN 105737052 A CN105737052 A CN 105737052A
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- Prior art keywords
- led
- heat conduction
- led headlamp
- semi
- copper heat
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052802 copper Inorganic materials 0.000 claims abstract description 45
- 239000010949 copper Substances 0.000 claims abstract description 45
- 239000011324 bead Substances 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 230000004907 flux Effects 0.000 claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 229910000838 Al alloy Inorganic materials 0.000 claims description 21
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 9
- 239000011049 pearl Substances 0.000 description 9
- 238000009434 installation Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 101150027973 hira gene Proteins 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to the field of automobile lamps, in particular to an LED headlamp. The LED headlamp comprises an optical module and a heat conduction module; the optical module comprises two LED chips and a lens; the heat conduction module comprises a copper heat conduction pipe and a heat sink; the two LED chips are installed on corresponding substrates, and the two substrates adhere to the side surface of one end of the copper heat conduction pipe and are located at the two ends of the same diameter part respectively; the lens is located in front of the LED chips and is connected to one end of the copper heat conduction pipe; the heat sink is installed at the other end of the copper heat conduction pipe; each LED chip is formed by connecting five or four lamp beads arranged in one row in series; each lamp bead is driven by a constant-current source, the luminous flux is 800-1100 lumens, and the constant-current source is located inside a cavity inside the heat sink. According to the LED headlamp, a needed line source can be formed by the lamp beads of a small number, the required luminous flux can be realized, and the cost can be greatly lowered.
Description
Technical Field
The invention relates to the field of automobile lamps, in particular to an LED headlamp.
Background
According to the original headlamp configuration of automobiles in the Chinese market, medium and low-grade automobile models leave factory, Halogen bulbs are used as main parts for reducing the cost, HID headlamps are configured on part of high-grade automobiles, only about 1% of automobile models leave factory and are provided with LED headlamps, according to Hira prediction, in 2014, 245,000 sets of LED automobile headlamps are arranged in the whole domestic market, and the number reaches 907,500 sets in 2016, so that the increase of more than three times is realized. From 2013 and 2019, the market share of the LED headlamp is improved from 1% to 10%.
The optical design is a big difficulty of the LED headlamp, the new Audi A8LLED headlamp forms a far and near light illuminating assembly by using a matrix arrangement mode of 25 high-power LED chips 5 multiplied by 5, so the luxurious combination is considered, and the general vehicle factory and aftermarket fully utilize the light energy emitted by the LEDs to improve the luminous efficiency because of considering the high cost of LED materials, and can effectively reduce the cost of the whole LED headlamp by using the least quantity of LEDs to meet the light distribution standard.
Disclosure of Invention
The invention aims to provide an LED headlamp, which aims to solve the problems of complex optical design and high cost of the existing LED headlamp.
The embodiment of the invention provides an LED headlamp, which comprises an optical component and a heat conducting component, wherein the optical component comprises: two LED chips and a lens; the heat conducting assembly includes: a copper heat pipe and a heat sink; the two LED chips are respectively arranged on the corresponding substrates, and the two substrates are respectively adhered to the side surface of one end of the copper heat conduction pipe and are respectively positioned at two ends with the same diameter; the lens is positioned in front of the LED chip and connected with one end of the copper heat conduction pipe; the radiator is arranged at the other end of the copper heat conduction pipe; wherein,
the LED chips are connected in series by 5 or 4 lamp beads and are arranged in a single row; each lamp bead is driven by a constant current source, the luminous flux is 800-1100 lumens, and the constant current source is driven to be arranged in the cavity inside the radiator.
In some embodiments, preferably, the installation position of each lamp bead is provided with a lamp bead angle adjusting piece.
In some embodiments, preferably, the lamp bead angle adjusting member includes: the mounting ball is arranged in the ball hole and can be rotatably connected with the ball hole by 180 degrees, a mounting plane is set for the mounting ball, and the lamp bead is fixedly connected with the mounting plane.
In some embodiments, preferably, a heat conductive adhesive is disposed between the substrate and the copper heat conductive pipe.
In some embodiments, preferably, the LED headlamp further includes a lampshade covering the LED chip and the lens.
In some embodiments, preferably, a cylindrical boss is sleeved in the middle of the copper heat conducting pipe, the cylindrical boss is the vehicle lamp mounting position, and the cylindrical boss is provided with more than one threaded hole.
In some embodiments, preferably, the heat sink is an aluminum alloy heat sink, and the aluminum alloy heat sink is formed by two semi-annular aluminum alloy heat sinks which are pressed in an interference fit mode.
In some embodiments, preferably, the semi-annular aluminum alloy heat sink includes: the semi-annular column and the radiating fins are scattered outwards by taking the semi-annular column as the center; the semi-annular column is sleeved outside the copper heat conduction pipe.
In some embodiments, it is preferable that fixing through holes are formed at both ends of the semi-annular column, and the fixing through holes penetrate through end faces of the semi-annular column.
In some embodiments, preferably, the heat conducting structure of the LED headlamp further includes a fan, the fan is fixedly connected to the other end of the copper heat conducting pipe, and a fan surface is disposed opposite to the aluminum alloy heat sink.
Compared with the prior art, the LED headlamp provided by the embodiment of the invention has the advantages that 5 or 4 lamp beads are connected in series and arranged in a single row on the LED substrate, each lamp bead is driven by a constant current source, the luminous flux is 800-1100 lumens, and the luminous flux of the whole LED chip meets the required requirement; and, two LED chips set up in the side of copper heat pipe relatively, are located the both ends of same diameter, and the light that LED lamp pearl sent can the full angle shine, reaches the requirement completely, but compares 25 high power chips of Audi headlamp moreover, and the lamp pearl use amount reduces, cost reduction.
Drawings
FIG. 1 is a schematic perspective view of an LED headlamp according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a 5 × 1 array LED chip in the heat conducting structure of the LED headlamp in FIG. 1 according to the present invention;
fig. 3 is a schematic structural diagram of a 4 × 1 array LED chip in the heat conducting structure of the LED headlamp in fig. 1 according to the present invention.
Detailed Description
The invention is described in further detail below with reference to specific embodiments and with reference to the attached drawings.
The invention provides an LED headlamp, which solves the problems of insufficient light or huge cost generally existing in the application of the existing LED headlamp on various automobiles.
This LED headlamp includes optical assembly and heat-conducting component, and optical assembly includes: two LED chips and a lens; the heat conduction assembly includes: a copper heat pipe and a heat sink; the two LED chips are respectively arranged on the corresponding substrates, and the two substrates are respectively adhered to the side surface of one end of the copper heat conduction pipe and are respectively positioned at two ends with the same diameter; the lens is positioned in front of the LED chip and connected with one end of the copper heat conduction pipe; the radiator is arranged at the other end of the copper heat conduction pipe; the LED chip is formed by connecting 5 or 4 lamp beads in series and is arranged in a single row; each lamp bead is driven by a constant current source, the luminous flux is 800-1100 lumens, and the constant current source is driven to be arranged in a cavity inside the radiator. .
5 or 4 lamp beads are connected in series on the LED substrate and arranged in a single row, each lamp bead is driven by a constant current source, the luminous flux is 800-1100 lumens, and the luminous flux of the whole LED chip meets the required requirements; and, two LED chips set up in the side of copper heat pipe relatively, are located the both ends of same diameter, and the light that LED lamp pearl sent can the full angle shine, reaches the requirement completely, but compares 25 high power chips of Audi headlamp moreover, and the lamp pearl use amount reduces, cost reduction.
The LED headlamp is described in detail below according to some specific embodiments:
an LED headlamp, as shown in FIG. 1, comprising an optical assembly and a thermally conductive assembly, the optical assembly comprising: two pieces of LED chips 3 and a lens 7; the heat conduction assembly includes: a copper heat pipe and a heat sink; the two LED chips 3 are respectively arranged on the corresponding substrates 2, and the two substrates 2 are respectively adhered to the side surface of one end of the copper heat conduction pipe 1 and are respectively positioned at two ends with the same diameter; the lens 7 is positioned in front of the LED chip 3 and is connected with one end of the copper heat-conducting pipe 1; the radiator is arranged at the other end of the copper heat conduction pipe; the LED chips 3 are connected in series by 5 lamp beads in fig. 2 or 4 lamp beads in fig. 3 and are arranged in a single row; each lamp bead is driven by a constant current source, the luminous flux is 800-1100 lumens, and the constant current source is driven to be arranged in a cavity inside the radiator. 5 or 4 lamp pearls are established ties and are formed the line source on the LED chip 3, and two LED chips 3 shine to different directions at the both ends of diameter, in two different positions, are enough to reach required illumination angle. And the luminous flux can reach the required luminous flux at 800-1100 lumens. The lens 7 focuses light to achieve a better irradiation effect.
In order to improve the illumination degree of consistency as much as possible, the installation position of each lamp bead is provided with a lamp bead angle adjusting part. And finely adjusting the irradiation angle of each lamp bead.
Wherein, the inventor has carried out specific design to lamp pearl angle modulation spare based on the needs of 180 rotatable regulations of lamp pearl: lamp pearl angle modulation spare includes: the mounting ball is arranged on the substrate 2, the mounting ball is positioned in the ball hole and can be rotatably connected with the ball hole by 180 degrees, a mounting plane is set for the mounting ball, and the lamp bead is fixedly connected with the mounting plane. The mounting ball is placed in the ball hole, and the mounting ball and the ball hole both rely on the 360-degree flexible rotation principle of the ball.
Because LED chip 3 can send more heat in shining, if not in time derive the heat, will lead to the lamp pearl life-span seriously impaired, consequently, set up heat-conducting glue between base plate 2 and the copper heat pipe 1, and the heat-conducting glue of preferred high heat conduction, as far as possible quick with heat introduction copper heat pipe 1, the thermal resistance is less.
In order to carry out the complete design to the LED headlamp, the designer has designed lamp shade 8 to the LED headlamp, and lamp shade 8 covers in LED chip 3 and lens 7 outside.
The heat conductive adhesive between the LED substrate 2 and the copper heat pipe 1 is preferably a high heat conductive adhesive, which can quickly introduce heat generated by the LED chip 3 into the copper heat pipe 1, and has low thermal resistance. The radiator is an aluminum alloy radiating fin which is annular and is sleeved outside the copper heat conduction pipe 1, and can receive heat from each direction and radiate the heat.
In order to simulate the effect of the existing car headlamp as much as possible, two LED substrates 2 are respectively adhered to the side surfaces of the copper heat conduction pipes 1 and are respectively located at two ends of the same diameter.
In order to exert the heat conduction performance of the copper heat conduction pipe 1 as much as possible, the copper heat conduction pipe 1 on which the LED substrate 2 is mounted is pressed into a plane, and the contact surface between the copper heat conduction pipe 1 and the LED substrate 2 is a plane, so that the contact area between the LED substrate 2 and the copper heat conduction pipe 1 is increased, and the heat conduction effect is improved.
The car light installation department need be installed to this heat conduction structure, and the designer carries out ingenious design to this structure, cup joints cylinder boss 4 at the middle part of copper heat pipe 1, acts as car light installation position with cylinder boss 4.
Wherein, in order to make this heat conduction structure and car light position installation inseparable, stable, cylinder boss 4 is equipped with more than one screw hole, and this heat conduction structure card is gone into behind the car light position, penetrates the screw hole with the screw, screws up.
Wherein, in order to increase the stable effect, can also adopt the spring fastener outside this cylinder boss 4, utilize the elasticity performance of spring to carry out the rigidity.
Or, in order to increase the stabilizing effect, a rotary buckle is arranged outside the cylindrical boss 4, and the stable connection between the heat conducting structure and the vehicle lamp position is enhanced by utilizing a screwing and clamping mode.
In order to improve the heat dissipation effect of the aluminum alloy heat sink, the aluminum alloy heat sink can be stably sleeved on the copper heat conduction pipe 1, the aluminum alloy heat sink is designed into two semi-annular aluminum alloy heat sinks, and the two semi-annular aluminum alloy heat sinks are pressed in an interference fit mode relatively and tightly sleeved on the copper heat conduction pipe 1. Furthermore, designers can arrange a heat-conducting adhesive, especially a heat-conducting adhesive with high heat-conducting property, between the two contact surfaces, so as to further improve the heat-conducting effect.
In order to strengthen the connection between two semi-annular aluminum alloy cooling fins, the semi-annular aluminum alloy cooling fin comprises: the semi-annular column 5 and the radiating fins 6 which are scattered outwards by taking the semi-annular column 5 as the center; the semi-annular column 5 is sleeved outside the copper heat conduction pipe 1. The semi-cylindrical shape is beneficial to the processing of interference pressing.
Furthermore, two ends of the semi-annular column 5 are provided with fixing through holes, and the fixing through holes penetrate through the end face of the semi-annular column 5. The bolt runs through the fixing through holes of the two semi-annular aluminum alloy radiating fins which are oppositely arranged, and further position fixing is carried out.
Wherein, LED chip 3 need adopt the LED drive to work, in order to improve succinct, the pleasing to the eye of overall design, is equipped with LED drive storage chamber in the aluminum alloy fin. The driver is arranged inside the radiator structure or arranged outside the radiator through a wire connection.
Based on above various designs, all adopted spontaneous heat dissipation principle, in order to improve radiating effect, this heat conduction structure still includes the fan, fan fixed connection in the other end of copper heat pipe 1, and the sector sets up with aluminum alloy fin relatively, and the wind that comes out from the fan blows to aluminum alloy fin, has further accelerated the radiating effect. The heat is dissipated to the surrounding air by blowing the small fan with high rotating speed to the radiator, and an obvious cooling effect is achieved.
During installation, a corresponding LED headlamp is selected according to the type of an original vehicle lamp cap, and a lamp holder (namely an installation position) is fixed in a mode of clamping by a spring or rotating a buckle. The lamp head surface is used as a standard interface, the chip part is positioned inside the assembly, and the radiator and the fan are positioned outside the assembly.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An LED headlamp comprising an optical assembly and a thermally conductive assembly, the optical assembly comprising: two LED chips and a lens; the heat conducting assembly includes: a copper heat pipe and a heat sink; the two LED chips are respectively arranged on the corresponding substrates, and the two substrates are respectively adhered to the side surface of one end of the copper heat conduction pipe and are respectively positioned at two ends with the same diameter; the lens is positioned in front of the LED chip and connected with one end of the copper heat conduction pipe; the radiator is arranged at the other end of the copper heat conduction pipe; wherein,
the LED chips are connected in series by 5 or 4 lamp beads and are arranged in a single row; each lamp bead is driven by a constant current source, the luminous flux is 800-1100 lumens, and the constant current source is driven to be arranged in the cavity inside the radiator.
2. The LED headlamp of claim 1 wherein each bead is mounted with a bead angle adjuster.
3. The LED headlamp of claim 2 wherein the bead angle adjustment comprises: the mounting ball is arranged in the ball hole and can be rotatably connected with the ball hole by 180 degrees, a mounting plane is set for the mounting ball, and the lamp bead is fixedly connected with the mounting plane.
4. The LED headlamp of claim 1 wherein a thermally conductive adhesive is disposed between the substrate and the copper heat pipe.
5. The LED headlamp according to any one of claims 1 to 4, further comprising a lamp cover that covers the LED chip and the lens.
6. The LED headlamp according to claim 5, wherein a cylindrical boss is sleeved in the middle of the copper heat conduction pipe, the cylindrical boss is a lamp mounting position, and the cylindrical boss is provided with more than one threaded hole.
7. The LED headlamp of claim 6 wherein the heat sink is an aluminum alloy heat sink that is press fit with two semi-annular aluminum alloy heat sinks in opposing interference fits.
8. The LED headlamp of claim 7 wherein the semi-annular aluminum alloy heat sink comprises: the semi-annular column and the radiating fins are scattered outwards by taking the semi-annular column as the center;
the semi-annular column is sleeved outside the copper heat conduction pipe.
9. The LED headlamp of claim 7 wherein the semi-annular post has attachment through holes at both ends, the attachment through holes passing through the end face of the semi-annular post.
10. The LED headlamp of claim 9 further comprising a fan fixedly attached to the other end of the copper heat pipe, the fan facing the aluminum alloy heat sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410757926.5A CN105737052A (en) | 2014-12-10 | 2014-12-10 | LED headlamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410757926.5A CN105737052A (en) | 2014-12-10 | 2014-12-10 | LED headlamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105737052A true CN105737052A (en) | 2016-07-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410757926.5A Pending CN105737052A (en) | 2014-12-10 | 2014-12-10 | LED headlamp |
Country Status (1)
| Country | Link |
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| CN (1) | CN105737052A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090653A (en) * | 2016-08-19 | 2016-11-09 | 东莞市闻誉实业有限公司 | Tubular radiating lamp |
| CN106838764A (en) * | 2017-01-20 | 2017-06-13 | 佛山市塔孚汽车照明有限公司 | LED headlamp |
| CN107178749A (en) * | 2017-06-09 | 2017-09-19 | 江西省绿野汽车照明有限公司 | Auto bulb |
| CN109027959A (en) * | 2018-07-11 | 2018-12-18 | 重庆金祺龙智能科技有限公司 | A kind of higher motorcycle LED headlight of heat sinking performance |
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|---|---|---|---|---|
| CN202017981U (en) * | 2011-04-03 | 2011-10-26 | 东莞市星晖光电有限公司 | LED ceiling lamp |
| CN203099619U (en) * | 2013-01-24 | 2013-07-31 | 邱耀文 | Automotive headlight light-emitting diode (LED) light source |
| CN103335260A (en) * | 2013-07-10 | 2013-10-02 | 广州市雷腾照明科技有限公司 | Efficient radiating LED automotive headlamp |
| US20140293625A1 (en) * | 2013-03-26 | 2014-10-02 | Koito Manufacturing Co., Ltd. | Cooling unit and illuminating apparatus |
| CN204285237U (en) * | 2014-12-10 | 2015-04-22 | 广东雪莱特光电科技股份有限公司 | LED headlamp |
-
2014
- 2014-12-10 CN CN201410757926.5A patent/CN105737052A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202017981U (en) * | 2011-04-03 | 2011-10-26 | 东莞市星晖光电有限公司 | LED ceiling lamp |
| CN203099619U (en) * | 2013-01-24 | 2013-07-31 | 邱耀文 | Automotive headlight light-emitting diode (LED) light source |
| US20140293625A1 (en) * | 2013-03-26 | 2014-10-02 | Koito Manufacturing Co., Ltd. | Cooling unit and illuminating apparatus |
| CN103335260A (en) * | 2013-07-10 | 2013-10-02 | 广州市雷腾照明科技有限公司 | Efficient radiating LED automotive headlamp |
| CN204285237U (en) * | 2014-12-10 | 2015-04-22 | 广东雪莱特光电科技股份有限公司 | LED headlamp |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090653A (en) * | 2016-08-19 | 2016-11-09 | 东莞市闻誉实业有限公司 | Tubular radiating lamp |
| CN106838764A (en) * | 2017-01-20 | 2017-06-13 | 佛山市塔孚汽车照明有限公司 | LED headlamp |
| CN107178749A (en) * | 2017-06-09 | 2017-09-19 | 江西省绿野汽车照明有限公司 | Auto bulb |
| CN109027959A (en) * | 2018-07-11 | 2018-12-18 | 重庆金祺龙智能科技有限公司 | A kind of higher motorcycle LED headlight of heat sinking performance |
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