CN103267256A - LED (light emitting diode) automobile headlamp - Google Patents
LED (light emitting diode) automobile headlamp Download PDFInfo
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- CN103267256A CN103267256A CN2013100956260A CN201310095626A CN103267256A CN 103267256 A CN103267256 A CN 103267256A CN 2013100956260 A CN2013100956260 A CN 2013100956260A CN 201310095626 A CN201310095626 A CN 201310095626A CN 103267256 A CN103267256 A CN 103267256A
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Abstract
The invention discloses an LED (light emitting diode) automobile headlamp, which comprises at least one light guide body and an LED part which is coupled with the light guide body, wherein the light guide body is a solid which is made of a transparent material, the light guide body comprises a front end surface, a rear end surface, an upper side surface and a paraboloid, wherein the upper side surface is connected to the front end surface and the upper side of the rear end surface, the paraboloid is connected to the front end surface and the lower side of the rear end surface, the front end surface is inclined to a horizontal plane, the front end surface is a light incident plane, the paraboloid is a light reflection surface, the rear end surface is a light refraction surface, a light source of the LED part is arranged below the upper side surface and on the outer side of the front end surface, and the light source of the LED part is also arranged on a reversed extension line of a normal of the front end surface. The LED is applied to the automobile head lamp, so that not only can the energy conservation and the environmental protection be realized, but also the service life of a product can be prolonged, the structure is simple, and the cost is lower.
Description
Technical field
The present invention relates to a kind of automobile front, particularly a kind of LED automobile front.
Background technology
In recent years, promote along with the luminous efficiency of LED becomes hundred times of ground, and the rapid decline of cost, illumination big producer in the whole world successively adds in led light source and the market research, beautiful, day, Europe and TaiWan, China all released the semiconductor lighting plan.LED has been widely used in the automotive lighting field as green light source with its energy-conservation and extra long life, but present stage LED is applied in and only limits to steering indicating light, side-marker lamp and high-mount stop lamp etc. on the automobile above the miscellaneous function, as the headlight (dipped beam/distance light) of automotive lighting main body, most vehicles all still are halogen or HID light source in the market.Exist on structure technological difficulties remain to be broken through, high-quality optical design also is to hinder a great problem that LED uses to satisfy the car light light distribution requirements.
Summary of the invention
In order to overcome above-mentioned shortcoming, the object of the present invention is to provide a kind of LED automobile front, method for designing is simple, low cost of manufacture, use led light source, life of product are long.
In order to reach above purpose, the invention provides a kind of LED automobile front, the LED parts that comprise at least one light conductor and be coupled with it, described light conductor is the entity of being made by transparent material, described light conductor comprises front end face and rear end face, be connected in the upper side of described front end face and described rear end face upside, be connected in the parabola of described front end face and described rear end face downside, described front end face and horizontal plane tilt, described front end face is light entrance face, described parabola is light reflection surface, described rear end face is refractive optical surface, the light source of described LED parts is positioned at the below of described upper side, and be positioned at the outside of described front end face, and be positioned on the reverse extending line of normal of described front end face.
As preferably, described upper side parallels with horizontal plane.
As preferably, described rear end face is a plurality of planar combination or is free form surface.
As preferably another, described rear end face is a plane that parallels with vertical guide.
As further preferably, the rear of described rear end face is provided with baffle plate, and the cross-sectional area of described baffle plate is less than the area of described rear end face.
As further preferably another, the part of described rear end face has plated film.
As preferably, described light conductor is made by glass or optical resin material.
Owing to adopted technique scheme, make and adopt design of the present invention LED is applied on the automobile front, not only energy-conserving and environment-protective, and can prolong service life of product are namely opened namely brightly, simple in structure, and cost is lower.
Description of drawings
Accompanying drawing 1 is the side view of light conductor;
Accompanying drawing 2 is the front view of light conductor;
Accompanying drawing 3 is the upward view of light conductor;
Accompanying drawing 4 is fundamental diagram one;
Accompanying drawing 5 is fundamental diagram two;
Accompanying drawing 6 is 25 meters Illumination Distribution figure;
Accompanying drawing 7 is 25 meters illumination contour distribution maps;
Accompanying drawing 8 is schematic diagram one of the present invention (embodiment one);
Accompanying drawing 10 is schematic diagram three of the present invention (embodiment three).
The specific embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
Referring to accompanying drawing 1 to shown in the accompanying drawing 3, a kind of LED automobile front, the LED parts 2 that comprise light conductor 1 and be coupled with it, light conductor 1 is the entity of being made by transparent material, light conductor 1 comprises front end face A1 and rear end face A3, be connected in the upper side A4 of front end face A1 and rear end face A3 upside, be connected in the parabolic A2 of front end face A1 and rear end face A3 downside, front end face A1 and horizontal plane tilt, upper side A4 parallels with horizontal plane, front end face A1 is light entrance face, parabolic A2 is light reflection surface, rear end face A3 is refractive optical surface, the light source of LED parts 2 is positioned at the below of upper side A4, and is positioned at the outside of front end face A1, and is positioned on the reverse extending line of normal of front end face A1, light conductor 1 is made by glass or optical resin material, and light conductor 1 can a plurality ofly make up.
Shown in Fig. 8-10, below be numerous embodiments of the present invention:
Embodiment one: rear end face A3 is a plurality of planar combination or is free form surface, can be divided into some zones during adjustment, regional adjustment targetedly, and to satisfy the car light light distribution requirements, method for designing is simpler, and cost is low, need not plated film.
Embodiment two: rear end face A3 is a plane that parallels with vertical guide.The rear of rear end face A3 is provided with baffle plate 4, and the cross-sectional area of baffle plate 4 is less than the area of rear end face A3.
Embodiment three: be that with the difference of embodiment two part of rear end face A3 has plated film 5.
Be described further below in conjunction with Fig. 4-5 pair of principle of the present invention, as shown in Figure 4, front end face A1 is incidence surface, suppose that light conductor 1 refractive index is n1, air refraction is n0, and parabolic A2 is the parabola bus, a is its axis, become the β angle with level, if light source is placed near the parabola focus, then light all is similar to the outgoing of paralleling to the axis after parabolic A2 inner counter is given birth to total reflection; The incidence surface centre normal is NN ＇, then can be released light and NN ＇ normal maximum angle: the θ ＇=arcsin (1/n1) of turnover light conductor 1 by the law of refraction, add light b and enter light conductor 1 maximum refraction angle θ ＇=pi/2-θ-β, then light b is parallel and axis a light, reflect after being transmitted to rear end face A3, to become the outgoing of γ angle with horizontal line, thus, all all can just can form the required dead line of luminous intensity distribution smaller or equal to γ like this through rear end face A3 emergent ray and horizontal line angulation on optical screen.During design, at first determine light source position, light conductor 1 maximum ga(u)ge H and length L are known, then can be determined the scope of β angle by parabolic equation.Restrictive condition is that light source (parabola focus) is positioned at below the upper side A4, beyond the front end face A1, and is positioned on the reverse extending line of front end face A1 centre normal NN ＇.
As shown in Figure 5, c, d are light, and the light c that comes out from LED enters light conductor 1 after front end face A1 refraction, are transmitted to parabolic A2 and go up the inner full emission of generation, reflect light conductor 1 through rear end face A3 then and get at last on the filament shield 3 at 25 meters; The light d that comes out from LED enters light conductor 1 after front end face A1 refraction, after directly reach light conductor 1 rear end face A3 reflect light conductor 1, get at last on the filament shield 3 apart from rear end face A325 rice.As Fig. 6-shown in Figure 7, be respectively 25 meters Illumination Distribution figure and 25 meters illumination contour distribution maps.
Above embodiment only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the people that is familiar with this technology understand content of the present invention and is implemented; can not limit protection scope of the present invention with this; all equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (7)
1. LED automobile front, it is characterized in that, the LED parts that comprise at least one light conductor and be coupled with it, described light conductor is the entity of being made by transparent material, described light conductor comprises front end face and rear end face, be connected in the upper side of described front end face and described rear end face upside, be connected in the parabola of described front end face and described rear end face downside, described front end face and horizontal plane tilt, described front end face is light entrance face, described parabola is light reflection surface, described rear end face is refractive optical surface, the light source of described LED parts is positioned at the below of described upper side, and be positioned at the outside of described front end face, and be positioned on the reverse extending line of normal of described front end face.
2. LED automobile front as claimed in claim 1, it is characterized in that: described upper side parallels with horizontal plane.
3. LED automobile front as claimed in claim 1 is characterized in that: described rear end face is a plurality of planar combination or is free form surface.
4. LED automobile front as claimed in claim 1, it is characterized in that: described rear end face is a plane that parallels with vertical guide.
5. LED automobile front as claimed in claim 4, it is characterized in that: the rear of described rear end face is provided with baffle plate, and the cross-sectional area of described baffle plate is less than the area of described rear end face.
6. LED automobile front as claimed in claim 4, it is characterized in that: the part of described rear end face has plated film.
7. LED automobile front as claimed in claim 1, it is characterized in that: described light conductor is made by glass or optical resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100956260A CN103267256A (en) | 2013-03-25 | 2013-03-25 | LED (light emitting diode) automobile headlamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100956260A CN103267256A (en) | 2013-03-25 | 2013-03-25 | LED (light emitting diode) automobile headlamp |
Publications (1)
| Publication Number | Publication Date |
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| CN103267256A true CN103267256A (en) | 2013-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013100956260A Pending CN103267256A (en) | 2013-03-25 | 2013-03-25 | LED (light emitting diode) automobile headlamp |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696846A (en) * | 2015-03-04 | 2015-06-10 | 上海小糸车灯有限公司 | LED optical structure for car lamps |
| CN105387426A (en) * | 2015-12-14 | 2016-03-09 | 成都恒坤光电科技有限公司 | Optical device integrating light collecting function and projection function and headlamp |
| CN105423216A (en) * | 2015-12-14 | 2016-03-23 | 成都恒坤光电科技有限公司 | Light ray collection device and headlamp |
| CN105444085A (en) * | 2015-12-14 | 2016-03-30 | 成都恒坤光电科技有限公司 | Light gathering device with shading device and head lamp |
| CN105745488A (en) * | 2013-11-19 | 2016-07-06 | 三菱电机株式会社 | Headlight module and headlight device |
| CN108474537A (en) * | 2016-01-13 | 2018-08-31 | 三菱电机株式会社 | Headlamp module and front lamp device |
| CN109973931A (en) * | 2019-05-08 | 2019-07-05 | 成都恒坤光电科技有限公司 | A kind of car light lower beam illumination dichroic reflection device, Optical devices and vehicle front lighting lamp assembly |
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| CN1721758A (en) * | 2004-05-14 | 2006-01-18 | C.R.F.阿西安尼顾问公司 | Module for projecting a light beam |
| US20080080207A1 (en) * | 2006-09-19 | 2008-04-03 | Schefenacker Vision Systems Germany Gmbh | Headlight assembly for a motor vehicle |
| CN101182908A (en) * | 2006-11-13 | 2008-05-21 | 株式会社小糸制作所 | Lamp unit for vehicles |
| JP2011187162A (en) * | 2010-03-04 | 2011-09-22 | Stanley Electric Co Ltd | Vehicular lamp |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1721758A (en) * | 2004-05-14 | 2006-01-18 | C.R.F.阿西安尼顾问公司 | Module for projecting a light beam |
| US20080080207A1 (en) * | 2006-09-19 | 2008-04-03 | Schefenacker Vision Systems Germany Gmbh | Headlight assembly for a motor vehicle |
| CN101182908A (en) * | 2006-11-13 | 2008-05-21 | 株式会社小糸制作所 | Lamp unit for vehicles |
| JP2011187162A (en) * | 2010-03-04 | 2011-09-22 | Stanley Electric Co Ltd | Vehicular lamp |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105745488B (en) * | 2013-11-19 | 2018-05-18 | 三菱电机株式会社 | Headlamp module and front lamp device |
| US10458611B2 (en) | 2013-11-19 | 2019-10-29 | Mitsubishi Electric Corporation | Headlight module and headlight device |
| US10267472B2 (en) | 2013-11-19 | 2019-04-23 | Mitsubishi Electric Corporation | Headlight module and headlight device |
| CN105745488A (en) * | 2013-11-19 | 2016-07-06 | 三菱电机株式会社 | Headlight module and headlight device |
| US9945528B2 (en) | 2013-11-19 | 2018-04-17 | Mitsubishi Electric Corporation | Headlight module and headlight device |
| CN104696846A (en) * | 2015-03-04 | 2015-06-10 | 上海小糸车灯有限公司 | LED optical structure for car lamps |
| CN105444085A (en) * | 2015-12-14 | 2016-03-30 | 成都恒坤光电科技有限公司 | Light gathering device with shading device and head lamp |
| CN105423216A (en) * | 2015-12-14 | 2016-03-23 | 成都恒坤光电科技有限公司 | Light ray collection device and headlamp |
| CN105387426A (en) * | 2015-12-14 | 2016-03-09 | 成都恒坤光电科技有限公司 | Optical device integrating light collecting function and projection function and headlamp |
| CN108474537A (en) * | 2016-01-13 | 2018-08-31 | 三菱电机株式会社 | Headlamp module and front lamp device |
| CN108474537B (en) * | 2016-01-13 | 2020-10-02 | 三菱电机株式会社 | Headlamp module and headlamp device |
| CN109973931A (en) * | 2019-05-08 | 2019-07-05 | 成都恒坤光电科技有限公司 | A kind of car light lower beam illumination dichroic reflection device, Optical devices and vehicle front lighting lamp assembly |
| CN109973931B (en) * | 2019-05-08 | 2024-04-16 | 成都恒坤光电科技有限公司 | Car light low beam lighting spectral reflector, optical device and car head-light assembly |
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Application publication date: 20130828 |