CN202484799U - LED (light-emitting diode) luminous unit and automotive headlamp comprising luminous unit - Google Patents
LED (light-emitting diode) luminous unit and automotive headlamp comprising luminous unit Download PDFInfo
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- CN202484799U CN202484799U CN2011205304683U CN201120530468U CN202484799U CN 202484799 U CN202484799 U CN 202484799U CN 2011205304683 U CN2011205304683 U CN 2011205304683U CN 201120530468 U CN201120530468 U CN 201120530468U CN 202484799 U CN202484799 U CN 202484799U
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- luminescence unit
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- splitting piece
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Abstract
The utility model discloses an LED (light-emitting diode) luminous unit and an automotive headlamp comprising the luminous unit. The inner surface of a reflector cup of the luminous unit is of a high-order aspheric surface obtained by taking a paraboloid as a reference curved surface and adjusting the reference curved surface by aberration correction, the luminous center of LED lamp beads is positioned on the focal point of the paraboloid, the light emitted by the luminous unit is high in intensity, the formed light spots can achieve the national standard, and the LED automotive headlamp achieving the national related standard can be formed by applying the luminous unit to the automotive headlamp.
Description
Technical field
The utility model relates to the LED technical field, relates to a kind of LED luminescence unit in particular and comprises the automobile head light of this luminescence unit.
Background technology
Advantages such as LED is long with its life-span, light efficiency is high and radiationless are widely used in lighting field.At present, mainly to adopt incandescent mercerising lamp, Halogen lamp LED be light source for motorcycle, automobile, electric motor car headlamp.Because the light efficiency of incandescent mercerising lamp and halogen light source is low, caloric value is big, the life-span is short; The utilization rate of light is low; So there are very big potential safety hazard in existing motorcycle, automobile, the problem that the illumination of electric motor car headlamp ubiquity is weak, caloric value is big, the life-span is short (being prone to blow, be prone to fragmentation like filament).Many people attempt to adopt LED as motorcycle, automobile, electric motor car headlamp light source; But it is because unreasonable to the structural design of LED luminescence unit; Problem such as exist the light utilization efficiency of luminescence unit not high, heat radiation is bad, light decay is serious makes luminescence unit can't form desirable distance light hot spot and dipped beam hot spot.Because the hot spot that forms can not reach the requirement of relative national standards, causes and can not be used widely.
Summary of the invention
The purpose of the utility model provides a kind of LED luminescence unit and comprises the automobile head light of this luminescence unit, and it can improve the emergent light brightness of light source, and makes the moulding hot spot meet relative national standards.
The said LED luminescence unit of the utility model; Comprise reflector, LED lamp pearl and circuit board; Pearl is installed on the circuit board LED lamp; And be plugged in the lamp pearl installing hole of reflector cup, it is characterized in that: the reflecting surface of said reflector is to be the high order aspheric surface that obtains behind the calibrated aberration adjustment of the datum plane benchmark curved surface with the parabola, and the centre of luminescence of said LED lamp pearl is positioned on this paraboloidal focus.This design makes emergent light brightness increase, and obtains the circular light spot of high brightness.
Rim of a cup at said reflector is provided with light splitting piece, and the light splitting piece surface is the plane, and the light splitting piece surface distributed has one or more cylindrical lens structures straight down, and this cylindrical mirror is perpendicular to the reflector optical axis.Owing to be provided with light splitting piece at rim of a cup, the cylindrical mirror on the light splitting piece can stretch circular light spot and form rectangular light spot or oval hot spot, width and each regional intensity of illumination of filament shield that curvature by regulating the light splitting piece cylindrical mirror and quantity are regulated hot spot.
Further, the center of said light splitting piece inwardly has a depressed area, and the bottom of depressed area is provided with concavees lens or convex lens, and the focus of concavees lens or convex lens overlaps with said paraboloidal focus.The light that said concavees lens or convex lens will be lost is in the past collected the back refraction and is formed directional light, has further strengthened the outgoing light intensity.
The said automobile head light that comprises this luminescence unit of the utility model; Comprise lamp sheet, luminescence unit, radiator and lamp housing; Luminescence unit is installed in the lamp housing; It is characterized in that: the distance light light source of headlamp is not combined with the luminescence unit of light splitting piece and the luminescence unit with light splitting piece by above-mentioned; The dipped beam light source of headlamp also is to be combined by luminescence unit with light splitting piece and the luminescence unit that do not have a light splitting piece, and the optical axis of wherein said close to sources has a down dip 1 °～20 ° than the optical axis direction of distance light light source.
The said automobile head light that comprises this luminescence unit of the utility model; Comprise lamp sheet, luminescence unit, radiator and lamp housing; Luminescence unit is installed in the lamp housing; It is characterized in that: the distance light source of headlamp is by all being combined by the luminescence unit with light splitting piece, and the close to sources of headlamp also is all to be combined by the luminescence unit with light splitting piece, and the optical axis of wherein said dipped beam light source has a down dip 1 °～20 ° than the optical axis direction of distance light light source.
The said LED luminescence unit of the utility model and comprise the automobile head light of this luminescence unit, wherein the Lamp cup side inner surface (being reflective surface) of the reflector of luminescence unit is the high order aspheric surface of axial symmetry rotation, this high order aspheric surface is a reflecting surface, the reflecting surface equation:
Wherein, K is quadric coefficient, and c is the inverse of vertex curvature radius, and r is the minute surface aperture radii, A, B, C, D ... Be each rank coefficient of high order aspheric surface.Because first is the benchmark quadratic surface; First is parabolic when k=-1; The benchmark curved surface k that designs this Lamp cup side inner surface gets-1; So the benchmark curved surface of this Lamp cup inner surface is parabolic, the situation that departs from of equational this aspheric surface of other polynomial repressentation and benchmark curved surface is proofreaied and correct the high order aspheric surface that has formed above-mentioned symmetry rotation through equational other multinomial to parabola.Though this high order aspheric surface has departed from the original hase director surface, still can be considered " focus " of the focus (being paraboloidal focus) of benchmark curved surface for this high order aspheric surface.The luminescence unit that obtains thus can access the high circular light spot of brightness, and at light splitting piece of rim of a cup increase of reflector, the cylindrical mirror on the light splitting piece stretches circular light spot and forms rectangular light spot or oval hot spot, reaches the light distribution requirements of relative national standards.Adopt above-mentioned luminescence unit to make automobile head light, through reasonably arranging the position relation of high beam and dipped headlights, the hot spot that makes high beam and dipped headlights shine out all can reach the light distribution requirements of relative national standards.
Description of drawings
Fig. 1 is not for having the structural representation of the reflector of light splitting piece in the utility model;
Fig. 2 is for having the structural representation of the reflector of light splitting piece in the utility model;
Fig. 3 is the front view of light splitting piece among Fig. 2;
Fig. 4 is the structural representation of reflector when the light splitting piece middle part is provided with convex lens among Fig. 2;
Fig. 5 is the front view of light splitting piece among Fig. 4;
Fig. 6 is the structural representation of reflector when the light splitting piece middle part is provided with concavees lens among Fig. 2;
Fig. 7 is the front view of light splitting piece among Fig. 6;
Fig. 8 be the said headlamp of the utility model when dipped headlights at the structural representation of last high beam in following time;
Fig. 9 is the right view of the said headlamp of Fig. 8;
Figure 10 be the said headlamp of the utility model when dipped headlights at the structural representation of high beam when last down;
Figure 11 is the right view of the said headlamp of Figure 10;
The specific embodiment
In order further to explain the technical scheme of the utility model, come in conjunction with the drawings below the utility model is set forth in detail.
As shown in Figure 1, the reflector of this LED luminescence unit, reflector cup have lamp pearl installing hole 1, and reflector inner surface 2 (being reflecting surface) is to be that the calibrated aberration of datum plane is adjusted the high order aspheric surface that obtains behind the benchmark curved surface with the parabola.
As shown in Figures 2 and 3; The reflector of this LED luminescence unit; The reflector cup has lamp pearl installing hole 1; The reflector inner surface 2 of reflector is to be that the calibrated aberration of datum plane is adjusted the high order aspheric surface that obtains behind the benchmark curved surface with the parabola, and the rim of a cup of reflector is provided with light splitting piece 3, be provided with on the surface of light splitting piece many straight down cylindrical mirror and this cylindrical mirror perpendicular to the reflector optical axis.
Like Fig. 4 and shown in Figure 5; The reflector of this LED luminescence unit, reflector cup are provided with lamp pearl installing hole 1, and the reflector inner surface 2 of reflector is to be that the calibrated aberration of benchmark curved surface is adjusted the high order aspheric surface that obtains behind the benchmark curved surface with the parabola; The rim of a cup of reflector is provided with light splitting piece 3; The center of light splitting piece is provided with inside depressed part, becomes concavees lens 4 structures in the bottom design of depressed part, and the focus of concavees lens 4 overlaps with said paraboloidal focus.
Like Fig. 6 and shown in Figure 7; The reflector of this LED luminescence unit, reflector cup have lamp pearl installing hole 1, and the reflector inner surface 2 of reflector is to be that the calibrated aberration of datum plane is adjusted the high order aspheric surface that obtains behind the benchmark curved surface with the parabola; The rim of a cup of reflector is provided with light splitting piece 3; The middle part of light splitting piece is provided with inside depressed part, is convex lens 5 in the bottom of depressed part, and the focus of convex lens 5 overlaps with said paraboloidal focus.
Like Fig. 8 and shown in Figure 9; This comprises the automobile head light of this luminescence unit; Comprise lamp sheet 6, luminescence unit, radiator 7 and lamp housing 8, luminescence unit is installed in the lamp housing 8, and said luminescence unit comprises reflector, LED lamp pearl 9 and circuit board 10; Said reflector cup is provided with lamp pearl installing hole 1; LED lamp pearl 9 is installed on the circuit board 10, and is plugged in the lamp pearl installing hole 1 of reflector cup, and the distance light light source 11 of headlamp does not combine with luminescence unit and the luminescence unit with light splitting piece of light splitting piece by above-mentioned two; The top that the dipped beam light source 12 of headlamp is positioned at the distance light light source 11 of headlamp is combined by two luminescence units with light splitting piece, and the optical axis of wherein said dipped beam light source has a down dip 3 ° than the optical axis direction of distance light light source.
Like Figure 10 and shown in Figure 11; This comprises the automobile head light of this luminescence unit; Comprise lamp sheet 6, luminescence unit, radiator 7 and lamp housing 8, luminescence unit is installed in the lamp housing 8, and said luminescence unit comprises reflector, LED lamp pearl 9 and circuit board 10; Said reflector cup is provided with lamp pearl installing hole 1; LED lamp pearl 9 is installed on the circuit board 10, and is plugged in the lamp pearl installing hole 1 of reflector cup, and the distance light source 11 of headlamp does not combine with luminescence unit and the luminescence unit with light splitting piece of light splitting piece by above-mentioned two; The below that the close to sources 12 of headlamp is positioned at the distance light source 11 of headlamp is combined by two luminescence units with light splitting piece, and the optical axis of wherein said close to sources has a down dip 3 ° than the optical axis direction of distance light light source.Certainly, the arrangement of distance light light source and dipped beam light source does not limit to and above-mentioned two kinds, for example distance light source and close to sources can about arrange also can mixed-arrangement.
Claims (5)
1. LED luminescence unit; Comprise reflector, LED lamp pearl (9) and circuit board (10); Pearl is installed on the circuit board LED lamp; And be plugged in the lamp pearl installing hole (1) of reflector cup, it is characterized in that: the reflecting surface of said reflector (2) is to be that the calibrated aberration of benchmark curved surface is adjusted the high order aspheric surface that obtains behind the original hase director surface with the parabola, and the face shape formula of said high order aspheric surface is:
Wherein, K is quadric coefficient, and c is the inverse of vertex curvature radius; R is the minute surface aperture radii; A, B, C, D ... Be each rank coefficient of high order aspheric surface, first is parabolic when k=-1, the situation that departs from of equational this aspheric surface of other polynomial repressentation and benchmark curved surface; Through equational other multinomial parabola is calibrated the said high order aspheric surface of formation, the centre of luminescence of said LED lamp pearl is positioned on this paraboloidal focus.
2. according to the said LED luminescence unit of claim 1, it is characterized in that: the rim of a cup of said reflector is provided with light splitting piece (3), and the light splitting piece surface distributed has one or more cylindrical lens structures straight down, and said cylindrical mirror is perpendicular to the reflector optical axis.
3. according to the said LED luminescence unit of claim 2; It is characterized in that: have a depressed area in the mediad of said light splitting piece (3); The bottom of depressed area is concavees lens (4) or convex lens (5) structure, and the focus of said concavees lens or convex lens overlaps with said paraboloidal focus.
4. automobile head light that comprises this luminescence unit; Comprise lamp sheet (6), luminescence unit, radiator (7) and lamp housing (8); Luminescence unit is installed in the lamp housing; It is characterized in that: the distance light light source of headlamp is not combined with the luminescence unit of light splitting piece and the luminescence unit with light splitting piece by above-mentioned; The dipped beam light source of headlamp also is to be combined by luminescence unit with light splitting piece and the luminescence unit that do not have a light splitting piece, and the optical axis of wherein said dipped beam light source has a down dip 1 °～20 ° than the optical axis direction of distance light light source.
5. automobile head light that comprises this luminescence unit; Comprise lamp sheet (6), luminescence unit, radiator (7) and lamp housing (8); Luminescence unit is installed in the lamp housing; It is characterized in that: the distance light light source of headlamp is by all being combined by the luminescence unit with light splitting piece, and the dipped beam light source of headlamp also is all to be combined by the luminescence unit with light splitting piece, and the optical axis of wherein said close to sources has a down dip 1 °～20 ° than the optical axis direction in distance light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205304683U CN202484799U (en) | 2011-12-16 | 2011-12-16 | LED (light-emitting diode) luminous unit and automotive headlamp comprising luminous unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205304683U CN202484799U (en) | 2011-12-16 | 2011-12-16 | LED (light-emitting diode) luminous unit and automotive headlamp comprising luminous unit |
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| Publication Number | Publication Date |
|---|---|
| CN202484799U true CN202484799U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205304683U Expired - Fee Related CN202484799U (en) | 2011-12-16 | 2011-12-16 | LED (light-emitting diode) luminous unit and automotive headlamp comprising luminous unit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997155A (en) * | 2012-12-07 | 2013-03-27 | 广州市佛达信号设备有限公司 | Light-emitting diode (LED) headlamp for motorcycle |
| CN103017061A (en) * | 2012-12-31 | 2013-04-03 | 重庆九亿光电仪器有限公司 | LED (Light-emitting Diode) headlight of motorcycle |
| CN104020574A (en) * | 2014-05-07 | 2014-09-03 | 山东理工大学 | Optical system for collimation of LED light source |
| CN104421807A (en) * | 2013-08-22 | 2015-03-18 | 江苏卡威汽车工业集团有限公司 | Automotive light-emitting diode (LED) headlamp |
| CN105698089A (en) * | 2016-03-14 | 2016-06-22 | 斯比夫（西安）照明技术有限公司 | High-concentration reflective mirror for locomotive outdoor lighting |
| CN108679467A (en) * | 2018-06-20 | 2018-10-19 | 深圳市三和祥科技有限公司 | A kind of LED light device |
-
2011
- 2011-12-16 CN CN2011205304683U patent/CN202484799U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997155A (en) * | 2012-12-07 | 2013-03-27 | 广州市佛达信号设备有限公司 | Light-emitting diode (LED) headlamp for motorcycle |
| CN102997155B (en) * | 2012-12-07 | 2016-09-21 | 广州市佛达信号设备有限公司 | A kind of motorcycle LED headlamp |
| CN103017061A (en) * | 2012-12-31 | 2013-04-03 | 重庆九亿光电仪器有限公司 | LED (Light-emitting Diode) headlight of motorcycle |
| CN104421807A (en) * | 2013-08-22 | 2015-03-18 | 江苏卡威汽车工业集团有限公司 | Automotive light-emitting diode (LED) headlamp |
| CN104020574A (en) * | 2014-05-07 | 2014-09-03 | 山东理工大学 | Optical system for collimation of LED light source |
| CN104020574B (en) * | 2014-05-07 | 2019-04-12 | 山东理工大学 | A kind of optical system for LED light source collimation |
| CN105698089A (en) * | 2016-03-14 | 2016-06-22 | 斯比夫（西安）照明技术有限公司 | High-concentration reflective mirror for locomotive outdoor lighting |
| CN105698089B (en) * | 2016-03-14 | 2018-06-22 | 斯比夫（西安）照明技术有限公司 | The high light-focusing type reflective mirror of railway locomotive outdoor lighting |
| CN108679467A (en) * | 2018-06-20 | 2018-10-19 | 深圳市三和祥科技有限公司 | A kind of LED light device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20141216 |
|
| EXPY | Termination of patent right or utility model |