CN101858548A - LED luminescent unit and motorcycle LED headlamp light source thereby - Google Patents
LED luminescent unit and motorcycle LED headlamp light source thereby Download PDFInfo
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- CN101858548A CN101858548A CN 201010130379 CN201010130379A CN101858548A CN 101858548 A CN101858548 A CN 101858548A CN 201010130379 CN201010130379 CN 201010130379 CN 201010130379 A CN201010130379 A CN 201010130379A CN 101858548 A CN101858548 A CN 101858548A
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Abstract
The invention provides an LED luminescent unit and a motorcycle LED headlamp light source thereby. The LED luminescent unit consists of a lens type lamp cup, an LED bulb and a circuit board, wherein the focus of a parabolic reflecting surface or a spherical reflecting surface of the lamp cup is superposed with the focus of a double-face convex lens or a single-face convex lens, the superposed focus is positioned between the real focus and the virtual focus of the emergent light of the LED bulb or is positioned in the real focus or the virtual focus. The top of the lamp cup is a plane or at least a vertically arranged cylindrical surface is distributed on the top of the lamp cup. In the invention, the structure of the lamp cup and the installation position of the bulb in the lamp cup are reasonably designed, thereby both the emergent light brightness of the luminescent unit and molding facula can achieve ideal effects. When the LED luminescent unit is used as the light source of an LED headlamp, the effects of reducing power, improving illumination and prolonging service life without emitting heat are achieved, and the potential safety hazard can be eliminated.
Description
Technical field
The invention belongs to the led light source technology, be specifically related to a kind of LED luminescence unit and light source with distance light or dipped beam effect.
Background technology
LED (light emitting diode) be described as the 4th generation light source, it has the advantage that the life-span is long, light efficiency is high, radiationless.The theoretical life-span of LED surpasses 100,000 hours, and luminous efficiency is up to 90%, and the energy consumption of same light flux only is 8% of an incandescent lamp, has the advantage of significant green, low-carbon (LC).Worldwide LED is used widely in lighting field.
It is light source that present motorcycle headlamp (front combination lamp) mainly adopts incandescent mercerising lamp, Halogen lamp LED, by the reflector reflection way light is reflected in motorcycle the place ahead.Because the light efficiency of incandescent mercerising lamp and halogen light source is low, caloric value is big, the life-span is short, and adopt the utilization rate of reflector reflection way light low, so the illumination of existing motorcycle headlamp ubiquity is weak, caloric value is big, the life-span is short (as filament easily blow, easily fragmentation) problem, have very big potential safety hazard.
Because the extensive use of LED and the remarkable advantage that is had thereof, many people attempt to adopt LED as the motorcycle headlamp light source, but it is because unreasonable to the structural design of LED luminescence unit, exist the light utilization efficiency of luminescence unit not high, heat radiation is bad, light decay is serious, can't form problems such as desirable distance light hot spot and dipped beam hot spot, the requirement that does not reach relative national standards.Fail to be extensive use of.
Summary of the invention
The purpose of the technology of the present invention is at the prior art above shortcomings, a kind of new LED luminescence unit and formed motorcycle LED headlamp light source are proposed, to improve the emergent light brightness of light source, and make the moulding hot spot reach desirable requirement, meet relative national standards, solve the problem that former motorcycle headlamp exists well.
Technical scheme of the present invention is as follows:
In order to achieve the above object, the present invention has at first carried out particular design to the structure of luminescence unit:
Luminescence unit is made up of lens type Lamp cup, LED lamp pearl and circuit board.Lamp cup preferably adopts the PMMA optical material injection mo(u)lding of light transmittance more than 92.8%, because the refractive index of PMMA greater than airborne refractive index, can make the incident light that satisfies the cirtical angle of total reflection realize total reflection.
The lens type Lamp cup is a solid, the side surface of Lamp cup be by parabola along Lamp cup axially revolution and the parabolic reflector that forms, or axially turn round and the ball-type reflecting surface that forms along Lamp cup by one section circular arc line.
Leave LED lamp pearl installing hole at the cup center of Lamp cup, Kong Dingwei lenticular lens of LED lamp pearl installing hole (forming) or single face convex lens structures (as R1 in the accompanying drawing or R2) as R1 in the accompanying drawing and R2.
The key of this Lamp cup design is to guarantee that the parabolic reflector of Lamp cup or the focus of ball-type reflecting surface overlap with the focus of lenticular lens or single face convex lens.
LED lamp pearl is adopted once the lamp pearl of light envelope moulding, pearl is installed on the circuit board LED lamp, in the LED lamp pearl installing hole of the cup of insertion lens type Lamp cup, and make the overlapping between the real focus and virtual focus that focus falls within LED lamp pearl emergent light of the parabolic reflector of Lamp cup or ball-type reflecting surface and lenticular lens or single face convex lens, perhaps fall within on the described real focus, perhaps fall within on the described virtual focus.We know that the real focus of LED lamp pearl emergent light is the luminescence chip position of LED lamp pearl.Described lens type Lamp cup is fixed on the circuit board by cup.
The cup roof construction of this Lamp cup also compares key, and the cup top of Lamp cup can be a leveling face, perhaps the cup end face distribution at least one vertical cylinder of arranging; Perhaps cup top central dip forms a face of lenticular lens, and the remainder on cup top is the plane or at least one cylinder of vertically arranging that distributes.For the ease of distinguishing, we are called A type Lamp cup with cup top for the plane, what cup top was distributed with cylinder is called the Type B Lamp cup, the light that the lamp pearl sends forms circular light spot by the reflection and the transmission meeting of A type Lamp cup, the light that the lamp pearl sends forms rectangular light spot or oval hot spot by the reflection and the transmission meeting of Type B Lamp cup, can obtain dipped beam or distance light effect thus.
The LED luminescence unit satisfies under the situation of above-mentioned condition in structure, just can guarantee parabolic reflector or spherical reflective surface reflection and the total reflection of light that the luminescence chip of lamp pearl sends through Lamp cup, and through the light of Lamp cup convex lens transmission can " substantially " along the parallel outgoing of optical axis, significantly improve the utilization rate of light thus, the utilization of light can reach 95%.
Above-mentioned said " substantially ", be because the luminescence chip surface area of LED lamp pearl is very little usually, for this luminescence unit, preferably select the lamp pearl of single chips, and the light-emitting area of chip is good in 9 square millimeters, chip center and edge sends the scatteringangle 1=θ 2 (as Figure 1A, Fig. 2 A, Fig. 3 A shown in) of light through reflection of the reflecting surface of Lamp cup and planoconvex lens transmission formation like this, and less than ± 10 °, thereby can guarantee led chip send light through rising angle after this Lamp cup transmission less than 10 degree, therefore the emergent light that can be considered by Lamp cup is effective light substantially.
The light that the lamp pearl sends is by the reflection and the circular hot spot of transmission of A type Lamp cup, by reflection and the transmission formation rectangular light spot or the oval hot spot of Type B Lamp cup.In order to obtain two kinds of different illumination effects of dipped beam or distance light, make the dipped beam hot spot form dark bright dead line down, but two kinds of Lamp cup organic assembling of A, B and obtain desirable hot spot.
Therefore, the present invention has further designed the motorcycle LED headlamp light source that utilizes above-mentioned luminescence unit to form, and it comprises dipped beam lamp plate and distance light lamp plate.
Described dipped beam lamp plate is installed on the lamp bracket by at least two described luminescence units and constitutes, and wherein has at least one to be the luminescence unit of Type B Lamp cup structure in the luminescence unit, and regulates the ratio of Type B Lamp cup structure light-emitting unit according to specific requirement.
Described distance light lamp plate also is installed on the lamp bracket by at least two described luminescence units and constitutes, wherein have at least one to be A type Lamp cup structure light-emitting unit in the luminescence unit, determine usage ratio between this luminescence unit and other luminescence unit according to specific requirement.
Described two lamp plates in lamp housing one on the other or left and right sides mode be close to and arrange install; And when the dipped beam lamp plate at last distance light lamp plate in following time, the angle of two lamp plate exiting surfaces remains on 161 °～180 °; When the distance light lamp plate at last and dipped beam lamp plate in following time, the angle of two lamp plate exiting surfaces remains on 181 °～200 °; When two lamp plates are the right layout of a first from left, downward-sloping 1 °～20 ° of the exiting surfaces of described dipped beam lamp plate than the exiting surface of distance light lamp plate.
Motorcycle headlamp working method and lighting effect are as follows:
When independent startup dipped headlights, high beam does not work.Dipped headlights is owing to the certain angle that tilts earthward, and it is far away that the work illumination range can extend to 25m from motorcycle front-wheel, forms only 0.5m of height, the rectangle main spot of wide 8m, add the both sides scattered light, can under not direct projection the other side sends a car driver's prerequisite, illuminate advance road surface and both sides.
When starting high beam, it can concentrate the horizontal emergent light of formation, illuminates distant place pedestrian, vehicle, road guideboard etc.
And, this headlamp (front combination lamp) is a led light source owing to what adopt, power demand is little, dipped headlights also can be worked simultaneously when high beam is worked, can will all illuminate thus from motorcycle front-wheel position afield, guaranteeing does not have blackspot in 25 meters in motorcycle the place ahead, illuminates to have a wide reach more favourable safety traffic.
Lamp sheet, back cover, power supply that the luminescence unit of the present invention's design can be equipped with various different shapings form various moulding motorcycle headlamp assemblies, and it is supporting to be fit to various style motorcycle car lights.
In sum,, the present invention has following significant advantage:
By the appropriate design secondary optical system---be the structure of Lamp cup (lens), and the installation site of lamp pearl in Lamp cup, make the emergent light brightness of luminescence unit and moulding hot spot all can reach desirable requirement.Use the light source of this luminescence unit as the LED motorcycle headlamp, more traditional motorcycle headlamp compares: power has reduced by 75%; Illumination is doubled or many times; Do not generate heat, and LED lamp pearl is not water funk, is not afraid of and falls ring, the life-span can prolong several times; Dipped headlights while target has been eliminated potential safety hazard in the time of can realizing switch-on distance light.
Description of drawings
Fig. 1 is the structural representation (lenticular lens) of the luminescence unit of another kind of Type B Lamp cup
Figure 1A is the index path of the luminescence unit of Type B Lamp cup
Figure 1A A is the index path of the local cylinder in cup top of Figure 1A
Figure 1B is the vertical view of the luminescence unit of Type B Lamp cup
Fig. 2 is a kind of structural representation (single face convex lens) of luminescence unit of Type B Lamp cup
Fig. 2 A is the index path of the luminescence unit of Type B Lamp cup
The structural representation (lenticular lens) of the luminescence unit of a kind of A type of Fig. 3 Lamp cup
Fig. 3 A is the index path of the luminescence unit of A type Lamp cup
The structural representation (lenticular lens) of the luminescence unit of the another kind of A type of Fig. 4 Lamp cup
Fig. 4 A is the index path of the luminescence unit of A type Lamp cup
Fig. 5 is the index path (virtual focus and real focus overlap) of a kind of lamp pearl
Fig. 6 is the index path ((virtual focus and real focus do not overlap) of another kind of lamp pearl
Fig. 7 is a kind of structural representation of motorcycle LED headlamp light source of form
Fig. 7 A is the side view of Fig. 7
The specific embodiment
Further describe before luminescence unit that the present invention proposes and the motorcycle concrete structure below in conjunction with accompanying drawing according to Assembled lamp:
Referring to Fig. 1 and Figure 1A, this luminescence unit is the Type B Lamp cup that adopts, and it forms (a plurality of lens type Lamp cups and LED lamp pearl are installed on the circuit board, form a plurality of luminescence units) by lens type Lamp cup 15, LED lamp pearl 12 and circuit board 11.This Lamp cup adopts the PMMA optical material injection mo(u)lding of light transmittance more than 92.8%, is solid lens.The side surface 14 of this Lamp cup is the parabolic reflector (can certainly be the ball-type reflecting surface that is formed along the axial revolution of Lamp cup by one section circular arc line) that is formed along the axial revolution of Lamp cup by parabola.Leave LED lamp pearl installing hole at the cup center of Lamp cup, the Kong Dingwei lenticular lens 16 of LED lamp pearl installing hole (R1 and R2 form) structure.The lens type Lamp cup is fixed on the circuit board 11 by cup.The parabolic reflector focus of this Lamp cup overlaps with the focus of lenticular lens, coincide point position A point.
The cup top of this Lamp cup is that many of distributions are vertically arranged and mutually continuous cylinder 17, the light that light penetrates through too much bar cylinder 17 lens on the Lamp cup top is shown in Figure 1A A, these cylindrical lenses can be a rectangular light spot with the emergent light horizontal stretch or be similar to rectangle (as ellipse) hot spot, reach the needed dipped beam effect of motorcycle headlamp thus.
Another kind shown in Fig. 2 and Fig. 2 A adopts the structure of the luminescence unit of Type B Lamp cup, and what its different place of structure with Fig. 1 was to adopt is single face convex lens 18, and other structure is identical, also can reach the illumination effect of preceding a kind of luminescence unit.
Shown in Fig. 3 and Fig. 3 A, Fig. 4 and Fig. 4 A is the structure that adopts the luminescence unit of A type Lamp cup Lamp cup, its luminescence unit structure with Fig. 1 and Fig. 2 is the same substantially, what just adopted on its glass top is the plane, produce the different light effect that goes out thus, the light that its lamp pearl sends by A type Lamp cup reflection and transmission forms is circular light spot.Reach the needed distance light effect of motorcycle headlamp thus.
And for the lamp pearl, what several structures in front adopted is the more special lamp pearl of a kind of structure, and promptly the real focus of lamp pearl emergent light and virtual focus overlap.In fact, this luminescence unit can adopt other any type of lamp pearl, and as shown in Figure 6, the real focus A of the emergent light of this lamp pearl (being the luminescence chip position) does not overlap with virtual focus B.Adopt luminescence unit that this lamp pearl forms shown in Fig. 4 and Fig. 4 A, to be provided be overlapping on the virtual focus that focus drops on LED lamp pearl 12 emergent lights the parabolic reflector of Lamp cup and lenticular lens in LED lamp pearl 12 positions in this structure.Certainly in the practical set, also can fall within on the real focus overlapping focus, perhaps fall within on the optional position between virtual focus and the real focus, these can make luminescence unit obtain desirable illumination effect.
The motorcycle LED headlamp light source that adopts above-mentioned luminescence unit formation is referring to Fig. 7 and Fig. 7 A, and described light source comprises dipped headlights plate 3 and distance light lamp plate 2.
Dipped beam lamp plate 3 is that the luminescence unit 1B that many cylinders of three cup top distributions are installed on lamp bracket side by side constitutes.Distance light lamp plate 2 is 8 cup tops to be installed side by side be the luminescence unit 1A structure on plane on lamp bracket.Certainly, as required, the luminescence unit 1B of some ratios can be installed also on the dipped beam lamp plate 3, the luminescence unit 1A of some ratios is installed on the distance light lamp plate 2.
During installation, two lamp plates are next-door neighbour's layout installation one on the other in lamp housing, and the angle between dipped beam lamp plate 3 and distance light lamp plate 2 exiting surfaces remains on 187 °.
The concrete installation of headlamp is that the cup end installing hole that welds corresponding each Lamp cup of headlamp of circuit board (lens) of LED lamp pearl is taken a seat, and is assembled into one with lamp sheet, back cover again, constitutes headlamp assembly.
Claims (4)
1. LED lamp luminescence unit, it is made up of lens type Lamp cup, LED lamp pearl and circuit board; It is characterized in that:
Described lens type Lamp cup is the solid that adopts the optical material injection mo(u)lding, the side surface of described Lamp cup be by parabola along Lamp cup axially revolution and the parabolic reflector that forms, or axially turn round and the ball-type reflecting surface that forms along Lamp cup by one section circular arc line;
Leave LED lamp pearl installing hole at the cup center of described Lamp cup, the Kong Dingwei lenticular lens or the single face convex lens structures of LED lamp pearl installing hole;
The focus of the parabolic reflector of described Lamp cup or ball-type reflecting surface overlaps with the focus of lenticular lens or single face convex lens;
Described LED lamp pearl is installed on the circuit board, and in the LED lamp pearl installing hole of the cup of insertion lens type Lamp cup, and make the overlapping between the real focus and virtual focus that focus falls within LED lamp pearl emergent light of the parabolic reflector of Lamp cup or ball-type reflecting surface and lenticular lens or single face convex lens, perhaps fall within on the described real focus, perhaps fall within on the described virtual focus; The real focus of described LED lamp pearl emergent light is the luminescence chip position of LED lamp pearl; Described lens type Lamp cup is fixed on the circuit board by cup;
The cup top of described Lamp cup is a leveling face, and perhaps cup pushes up at least one cylinder of vertically arranging that distributes; Perhaps cup top central dip forms a face of lenticular lens, and the remainder on cup top is the plane or at least one cylinder of vertically arranging that distributes.
2. luminescence unit according to claim 1 is characterized in that: described Lamp cup adopts the PMMA optical material injection mo(u)lding of light transmittance more than 92.8%, and the luminescence chip area of described LED lamp pearl is in 9 square millimeters.
3. the motorcycle LED headlamp light source that utilizes the described luminescence unit of claim 1 to form is characterized in that described light source comprises dipped headlights plate and distance light lamp plate;
Described dipped beam lamp plate is installed on the lamp bracket by two described luminescence units at least and constitutes, and wherein has a luminescence unit that is distributed with cylinder for the cup top in the luminescence unit at least;
Described distance light lamp plate at least also is installed on the lamp bracket by two described luminescence units and constitutes, and wherein has at least one to be that the cup top is the luminescence unit on plane in the luminescence unit;
Described two lamp plates in lamp housing one on the other or about the next-door neighbour arrange to install.
4. motorcycle LED headlamp light source according to claim 3 is characterized in that, when the dipped beam lamp plate up the distance light lamp plate below the time, the angle between dipped beam lamp plate and the distance light lamp plate exiting surface remains on 161 °～180 °; When the distance light lamp plate at last and dipped beam lamp plate in following time, the angle between the two lamp plate exiting surfaces remains on 181 °～200 °; When two lamp plates are the right layout of a first from left, downward-sloping 1 °～20 ° of the exiting surfaces of described dipped beam lamp plate than the exiting surface of distance light lamp plate.
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| CN 201010130379 CN101858548A (en) | 2010-03-23 | 2010-03-23 | LED luminescent unit and motorcycle LED headlamp light source thereby |
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| CN 201010130379 CN101858548A (en) | 2010-03-23 | 2010-03-23 | LED luminescent unit and motorcycle LED headlamp light source thereby |
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| CN102367940A (en) * | 2011-12-07 | 2012-03-07 | 江苏洪昌科技股份有限公司 | Combined refraction-reflection type automobile LED (light emitting diode) head lamp distance light optical system |
| CN102679206A (en) * | 2011-03-11 | 2012-09-19 | 罗姆股份有限公司 | LED bulb |
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| CN102901043A (en) * | 2012-07-10 | 2013-01-30 | 华南理工大学 | Optical lens with free-form surfaces for LED dipped headlight of motorcycle |
| CN103851363A (en) * | 2012-11-30 | 2014-06-11 | 海洋王（东莞）照明科技有限公司 | LED lamp and lens thereof |
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| CN109114520A (en) * | 2018-08-23 | 2019-01-01 | 中山市富同晟科技有限公司 | Automobile dipped headlight and its light distributing method based on laser light source |
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| CN102748691B (en) * | 2012-07-16 | 2017-04-19 | 毛振权 | Upper-beam head lamp of LED (Light Emitting Diode) motor vehicle |
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| CN112664899B (en) * | 2015-05-22 | 2022-10-25 | 三菱电机株式会社 | Headlight module |
| CN105782847A (en) * | 2016-04-08 | 2016-07-20 | 南通大学 | Substitutional LED automotive headlight light source |
| CN107036021A (en) * | 2017-06-07 | 2017-08-11 | 成都恒坤光电科技有限公司 | A kind of multiple light courcess high beam |
| EP3767166B1 (en) | 2018-03-16 | 2021-09-29 | Antares Iluminación, S.A.U. | Optical system |
| CN109114520A (en) * | 2018-08-23 | 2019-01-01 | 中山市富同晟科技有限公司 | Automobile dipped headlight and its light distributing method based on laser light source |
| WO2020015419A1 (en) * | 2018-08-30 | 2020-01-23 | 旭宇光电（深圳）股份有限公司 | Vehicle led illumination device and led vehicle lamp |
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Application publication date: 20101013 |