CN102506367A - Led automobile headlamp light source and manufacturing method thereof - Google Patents
Led automobile headlamp light source and manufacturing method thereof Download PDFInfo
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- CN102506367A CN102506367A CN2011103689347A CN201110368934A CN102506367A CN 102506367 A CN102506367 A CN 102506367A CN 2011103689347 A CN2011103689347 A CN 2011103689347A CN 201110368934 A CN201110368934 A CN 201110368934A CN 102506367 A CN102506367 A CN 102506367A
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- light source
- metal shell
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- medial surface
- headlamp light
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Abstract
The invention discloses a manufacturing method of an LED automobile headlamp light source. The invention further provides the LED automobile headlamp light source manufactured on the basis of the manufacturing method. The LED automobile headlamp light source provided by the invention provides double heat-radiating channels to an LED chip, and can effectively solve heat-radiating problem of an LED automobile headlamp. Simultaneously, the LED automobile headlamp light source provided by the invention realizes the automobile headlamp light source with excellent light distribution by combining an ellipsoid reflecting surface with an LED area light source.
Description
Technical field
The present invention relates to the automotive lighting field, be specifically related to the preparation method of LED car headlamp light source and a kind of LED car headlamp light source.
Technical background
Great power LED as lighting source have that volume is little, little power consumption, heating less, advantages such as response speed is fast, safe voltage is low, good weatherability, good directionality, so great power LED becomes the perfect light source in automotive lighting field.
At present, LED has obtained extensive use as the auxilliary lamp of automobile.All substituted other forms of light source at a lot of local LED such as indicator lamp, steering indicating light, brake lamp, fog lamp, taillights.Because there are the heat radiation bottleneck in high brightness, great power LED, make LED also very immature as the headlamp of headstock.If can break through this bottleneck, following automotive lighting field just will be the world of LED.
LED is the solid-state illumination light source, and the luminescence mechanism of its luminescence mechanism and other orthodox car lighting sources is different fully.The distribution curve flux of led chip also has very big-difference with the distribution curve flux of Halogen lamp LED and xenon lamp, so LED needs special light path design as the automotive lighting light source, rather than simply applies mechanically the illumination path of existing Halogen lamp LED and xenon lamp.
Summary of the invention
To above-mentioned two problems, the present invention provides the preparation method of a kind of LED car headlamp light source and a kind of LED car headlamp light source.
A kind of LED car headlamp light source provided by the invention comprises metal shell, and said metal shell comprises opening, medial surface, lateral surface, interior bottom surface and the outer bottom that is oppositely arranged with said inner bottom surface; Said opening, medial surface, interior bottom surface form a cavity; Said medial surface is an ellipsoid, and the focus vicinity of said medial surface is provided with base plate, and said base plate is provided with the led chip array; Said opening part is provided with transparent baffle, is filled with light-transmissive fluid in the said cavity.
Preferably, said led chip array by in red, green, blue, the yellow led chip both or arrange according to predetermined quantity and preset space length more than both and form.
Preferably, said metal shell is provided with the pipeline that is in communication with the outside.
Preferably, said transparent baffle is lens.
Preferably, the lateral surface of said metal shell and outer bottom are provided with fin or thermal column structure.
Preferably, said metal shell medial surface is provided with reflectorized material.
Preferably, said metal shell medial surface is provided with slow catoptric arrangement.
The present invention also provides a kind of preparation method of LED car headlamp light source, may further comprise the steps:
A kind of base plate is provided, the led chip array is fixed on the base plate;
A kind of metal shell is provided; Said metal shell comprises opening, medial surface, lateral surface, inner bottom surface and the outer bottom that is oppositely arranged with said inner bottom surface; Said opening, medial surface, inner bottom surface form a cavity, and said medial surface is an ellipsoid, said base plate are arranged near the focus of ellipsoid at said medial surface place; At said opening part transparent baffle is set, in said cavity, fills light-transmissive fluid.
Preferably, the said led chip array is fixed on the base plate comprise, with in red, green, blue, the yellow led chip both or be arranged on the base plate according to predetermined quantity and preset space length more than both.
Preferably, said in said cavity, fill light-transmissive fluid after, also comprise, the pipeline that liquid is in communication with the outside is set on metal shell.
Innovative point of the present invention is following 2 points:
The first, the present invention adopts the led chip array is placed on the base plate of high thermal conductance, base plate is being placed in the metal shell filling liquid sealing above chip then.The advantage and the innovative point of this scheme are, to led chip two heat dissipation channels are provided.On the one hand, the heat that chip is just given birth to passes to metal shell fast through the base plate of high heat conductance, and metal shell is delivered to heat in the air apace and goes then; The heat of chip generation passes to metal shell through the convection current of chip surrounding liquid on the other hand, and metal shell is delivered to heat in the air apace and goes then.
The second, the present invention is arranged to ellipsoid with the medial surface of metal shell, then the led chip array is arranged near the focus of ellipsoid.The advantage of this scheme is, can realize good light distribution effect, and under the distant light irradiation, the input of the electricity of 65W can reach the maximal illumination about 400lx 25 meters distant places.Because for the LED area source of approximate lambert's body, ellipsoid has best spotlight effect, this conclusion is to obtain through a large amount of theoretical modelings and experiment contrast.
In addition, the LED permutation among the present invention is to be formed by multiple monochromatic chip portfolio, can realize the illumination of multicolour and colour temperature.Under the driving of different driving circuit, the present invention can realize the switching of fog lamp, day portable lighter and night flight or navigation lamp.
Description of drawings
Fig. 1 is the sectional view of LED car headlamp light source in the embodiment of the invention one;
Fig. 2 is the stereogram of LED car headlamp light source in the embodiment of the invention one;
Fig. 3 is the side view of LED car headlamp light source in the embodiment of the invention one.
The specific embodiment
Embodiment one
A kind of LED car headlamp light source; Sectional view, stereogram and side view comprise metal shell 10 respectively with reference to figure 1, Fig. 2 and Fig. 3, and said metal shell 10 comprises opening 101, medial surface 102, lateral surface 103, inner bottom surface 104 and the outer bottom 105 that is oppositely arranged with said inner bottom surface 104; Said opening 101, medial surface 102, interior bottom surface form a cavity; Said medial surface 102 is an ellipsoid, and the focus vicinity of said medial surface 102 is provided with base plate 11, and said base plate 11 is provided with led chip array 12; Said opening part is provided with transparent baffle 14, is filled with light-transmissive fluid 13 in the said cavity.
In the present embodiment; Said led chip array 12 by in red, green, blue, the yellow led chip both or arrange according to predetermined quantity and preset space length more than both and form; For example; The led chip array can be arranged according to predetermined spacing and formed by 8 red chip, 16 green chips, 8 blue chip; Also can arranged according to predetermined spacing and formed by 1 red chip, 2 green chips, the kind of concrete led chip, quantity and spacing can be provided with as required, all within protection scope of the present invention.
In the present embodiment; The profile of said LED car headlamp light source can design according to demand, and its profile can be designed as cylindrical like Fig. 2 signal, also can be designed as square column type; Also can be designed as multi-edge column-shaped, can also be designed to the polyhedron shape of other regular and irregulars.
In the present embodiment; The medial surface 102 of the metal shell 10 of said LED car headlamp light source is the ellipsoid of standard; As shown in Figure 1; The ellipsoid that said medial surface also can be made up of a lot of small planes, those skilled in the art is done on basis of the present invention conventionally simply is out of shape all in protection scope of the present invention.
In the present embodiment, said base plate is arranged near the focus of said medial surface 102, and the normal direction of base plate and medial surface are that the axis direction of ellipsoid is parallel to each other, and certainly, also can have certain included angle between said normal and the axis.Base plate can directly be placed on the inner bottom surface like what Fig. 1 illustrated, also can be fixed in the metal shell through support, all is not construed as limiting the invention.
In the present embodiment, metal shell 10 is provided with the pipeline 15 like Fig. 1 signal, and pipeline 15 passes medial surface 102 and links to each other with air chamber 16 with lateral surface 103.Air chamber 16 is used to deposit the light-transmissive fluid 13 of expanded by heating.Certainly, pipeline 15 also can be arranged to pass inner bottom surface 104 and link to each other with air chamber 16 with outer bottom 105, all in protection scope of the present invention.The riding position of air chamber 16 is unrestricted.
In the present embodiment, transparent baffle 14 is made into lens, and the material of transparent baffle can be quartz, glass or organic material.Transparent baffle is made into the bright dipping light path that lens can be regulated the LED car headlamp light source of telling.
In the present embodiment, metal shell 10 is provided with heat radiating fin structure 106 structures, is used for the contact area of enlarged metal housing and air, helps metal shell to extraneous dissipate heat.Certainly, said heat radiating fin structure also can replace to the thermal column structure, and fin or thermal column structure can selectively be arranged on lateral surface or the outer bottom, all are not construed as limiting the invention.
As further improvement, can be provided with reflectorized material on the medial surface 102 of said metal shell 10 to present embodiment.Reflectorized material is the material that visible light is had high reflectance, can be materials such as gold and silver, aluminium, and these materials can be through plated film, mode such as print, smear is deposited on the medial surface 102.On the medial surface of metal shell 10, reflectorized material is set, can improves the whole light extraction efficiency of LED car headlamp light source.
As further improvement, can be provided with slow emitting structural on the medial surface 102 of said metal shell 10 to present embodiment.Slow catoptric arrangement can be arranged on the raised or sunken striated structure of medial surface 102 near opening 101 places, also can be in the equally distributed frosted structure of medial surface.Slow catoptric arrangement is set on the medial surface of metal shell 10, can reduces the dazzle of said LED car headlamp light source.
As the further improvement to the embodiment of the invention, light-transmissive fluid 13 can be a silicone oil.Silicone oil has advantages such as high chemical stability, high-flash, Nonpoisonous, non-environmental-pollution, low price, is a kind of good light-transmissive fluid.
Led chip array 12 in the instance of the present invention, by predetermined regularly arranged forming, wherein monochromatic chip comprises red chip, yellow chip, green chip and blue chip by the monochromatic chip of predetermined quantity.Be directed to white-light illuminating; The design that two kinds of preferred led chip arrays are arranged; One of which is: red, green, blue chip was with 1: 2: 1 ratio assembled arrangement, and another is: yellow, blue chip adds a small amount of red chip assembled arrangement again with 1: 1 ratio.The advantage of these two kinds of white light LED array designs is, under reasonable circuit drives, can realize high color rendering index (CRI) (＞85) illumination; Simultaneously can regulate (3000-7000) on a large scale in the colour temperature of these two kinds of light sources that scheme designed.These advantages are unexistent with the white light LEDs of fluorescent material encapsulation at present.
The base plate 11 that being used in the instance of the present invention carried led chip array 12 can be a ceramic material, can be metal material, also can be the crystal material.One of preferred is aluminium nitride ceramics, and advantage has three: the relative crystalline material of price is cheap, and thermal conductivity coefficient is high, and thermal coefficient of expansion and led chip are approaching; Preferred two is aluminium oxide ceramics, and its advantage has two: cheap, its metallization process is very ripe; Preferred three is copper, and its great advantage is that thermal conductivity coefficient is high, can reach 400.Backplate surface involved in the present invention has the pattern electrode that makes through technologies such as metal ceramic or ceramic metallizations, and this electrode is used for linking to each other with the positive and negative electrode of led chip.
The light-transmissive fluid that relates in the instance of the present invention its role is to: when led chip was worked, the heat that its interface produced can conduct with heat through the convection current of liquid and be delivered on the metal shell fast.Because the metal shell among the present invention has very high thermal conductivity coefficient, so liquid transfer is given the heat of metal shell, can be very fast be diffused into the external world by metal shell.Light-transmissive fluid can be full of metal shell fully, also can not exclusively be full of metal shell.That light-transmissive fluid among the present invention need possess is non-conductive, viscosity coefficient is low, chemical stability good, characteristics such as corroding metal and led chip, nuisanceless, low price not; Be directed to this, we are low viscosity silicone preferably.Can effectively solve the heat radiation bottleneck that present LED automobile front exists with the liquid heat radiation.
The transparent baffle that relates in the instance of the present invention its role is to: can be made into lens as the transparent baffle of light-emitting window and be used for adjusting angular, simultaneously anti-reflection film can be set on transparent baffle also and be used for improving light extraction efficiency.
Embodiment two
A kind of preparation method of LED car headlamp light source may further comprise the steps:
A kind of base plate is provided, the led chip array is fixed on the base plate;
A kind of metal shell is provided, and said metal shell comprises opening, medial surface, lateral surface, inner bottom surface and the outer bottom that is oppositely arranged with said inner bottom surface, and said opening, medial surface, inner bottom surface form a cavity.
Said medial surface for being made as ellipsoid, is arranged on said base plate near the focus of said medial surface, transparent baffle is set at said opening part.
In said cavity, fill light-transmissive fluid, light-transmissive fluid is filled through modes such as perfusion or negative pressure suctions and is got in the metal shell, and light-transmissive fluid can be full of metal shell fully, also can not exclusively be full of metal shell.
In the present embodiment, the said led chip array is fixed on the base plate comprise, with in red, green, blue, the yellow led chip both or be arranged on the base plate according to predetermined quantity and preset space length more than both; Link together with the mode with serial or parallel connection between a kind of chip; Chip not of the same race can not link to each other mutually and directly inserts external drive circuit; Also can connect earlier or parallel connection after insert external drive circuit again; Under the switching of drive circuit not, present embodiment can be realized the switching of fog lamp, day portable lighter, night flight or navigation lamp.
In the present embodiment, said in said cavity, the filling after the light-transmissive fluid also comprises, the pipeline that liquid is in communication with the outside is set on metal shell.Pipeline can be the perforation on the metal shell, also can be that the tubule of metal or plastic material interts in metal shell.
The sequencing of above step can be adjusted as required.
The concrete structure of the LED matrix of realizing in the present embodiment can repeat no more with reference to the description among the embodiment one here.
Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on the specific embodiment and range of application, all can change, in sum, the present disclosure content should not be construed as limitation of the present invention.
Claims (10)
1. LED car headlamp light source; It is characterized in that: said LED car headlamp light source comprises metal shell; Said metal shell comprises opening, medial surface, lateral surface, interior bottom surface and the outer bottom that is oppositely arranged with said inner bottom surface, and said opening, medial surface and interior bottom surface form a cavity, and said medial surface is an ellipsoid; The focus vicinity of said medial surface is provided with base plate; Said base plate is provided with the led chip array, and said opening part is provided with transparent baffle, is filled with light-transmissive fluid in the said cavity.
2. LED car headlamp light source as claimed in claim 1 is characterized in that: said led chip array by in red, green, blue, the yellow led chip both or arrange according to predetermined quantity and preset space length more than both and form.
3. LED car headlamp light source as claimed in claim 2, it is characterized in that: said metal shell is provided with the pipeline that is in communication with the outside.
4. LED car headlamp light source as claimed in claim 3: it is characterized in that said transparent baffle is lens.
5. LED car headlamp light source as claimed in claim 4 is characterized in that: the lateral surface of said metal shell and outer bottom are provided with fin or thermal column structure.
6. LED car headlamp light source as claimed in claim 5 is characterized in that: said metal shell medial surface is provided with reflectorized material.
7. LED car headlamp light source as claimed in claim 6 is characterized in that: said metal shell medial surface is provided with slow catoptric arrangement.
8. the preparation method of a LED car headlamp light source is characterized in that, may further comprise the steps:
A kind of base plate is provided, the led chip array is fixed on the base plate;
A kind of metal shell is provided; Wherein, said metal shell comprises opening, medial surface, lateral surface, inner bottom surface and the outer bottom that is oppositely arranged with said inner bottom surface, and said opening, medial surface, inner bottom surface form a cavity; Said medial surface is processed ellipsoid; Said base plate is arranged near the focus of said medial surface, transparent baffle is set, in said cavity, fill light-transmissive fluid at said opening part.
9. the preparation method of LED car headlamp light source as claimed in claim 8; It is characterized in that: the said led chip array is fixed on the base plate comprise, with in red, green, blue, the yellow led chip both or be arranged on the base plate according to predetermined quantity and preset space length more than both.
10. the preparation method of LED car headlamp light source as claimed in claim 9 is characterized in that: said in said cavity, fill light-transmissive fluid after, also comprise, the pipeline that liquid is in communication with the outside is set on metal shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103689347A CN102506367A (en) | 2011-11-17 | 2011-11-17 | Led automobile headlamp light source and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103689347A CN102506367A (en) | 2011-11-17 | 2011-11-17 | Led automobile headlamp light source and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102506367A true CN102506367A (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103689347A Pending CN102506367A (en) | 2011-11-17 | 2011-11-17 | Led automobile headlamp light source and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798069A (en) * | 2012-07-27 | 2012-11-28 | 鹤壁市恒通电气有限公司 | Projected automotive headlamp with four ellipsoidal-surface LEDs (light-emitting diodes) |
| CN103517532A (en) * | 2013-10-22 | 2014-01-15 | 柳州天运寰通科技有限公司 | LED automobile headlight with adjustable brightness and color temperature |
| US9429293B2 (en) | 2014-02-25 | 2016-08-30 | Ford Global Technologies, Llc | Vehicle light fixture having internal heatsink for LED lamp |
| US10168018B2 (en) | 2014-02-25 | 2019-01-01 | Ford Global Technologies, Llc | Vehicle light fixture having internal heatsink for LED lamp |
-
2011
- 2011-11-17 CN CN2011103689347A patent/CN102506367A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798069A (en) * | 2012-07-27 | 2012-11-28 | 鹤壁市恒通电气有限公司 | Projected automotive headlamp with four ellipsoidal-surface LEDs (light-emitting diodes) |
| CN103517532A (en) * | 2013-10-22 | 2014-01-15 | 柳州天运寰通科技有限公司 | LED automobile headlight with adjustable brightness and color temperature |
| US9429293B2 (en) | 2014-02-25 | 2016-08-30 | Ford Global Technologies, Llc | Vehicle light fixture having internal heatsink for LED lamp |
| RU2666082C2 (en) * | 2014-02-25 | 2018-09-05 | Форд Глобал Технолоджис, ЛЛК | Vehicle lighting device |
| US10168018B2 (en) | 2014-02-25 | 2019-01-01 | Ford Global Technologies, Llc | Vehicle light fixture having internal heatsink for LED lamp |
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Application publication date: 20120620 |