CN219198963U

CN219198963U - Reflection type fluorescence conversion type laser excitation front-mounted headlight

Info

Publication number: CN219198963U
Application number: CN202320720335.5U
Authority: CN
Inventors: 邵晨阳; 韩帅; 马跃龙; 李星灿; 赵一墨; 朱红瑜; 田野
Original assignee: Henan University of Technology
Current assignee: Henan University of Technology
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-06-16
Anticipated expiration: 2033-04-04

Abstract

The utility model discloses a reflection type fluorescence conversion type laser excited automobile front-end headlight. The laser light source device comprises a laser light source piece and a fluorescent ceramic piece, wherein the laser light source piece is arranged on a laser base, a reflector module corresponding to the laser light source piece is connected to the laser base, a reflector is also connected to the upper part of the laser base, and the fluorescent ceramic piece is connected in the reflector and corresponds to the reflector module; one side of the laser base and one side of the reflecting cover are connected with a heat dissipation piece, the reflecting cover and the heat dissipation piece are connected to a fixed structure, the other side of the laser base and the reflecting cover is connected with a beam shaping module, and the beam shaping module corresponds to the fluorescent ceramic plate. The laser light source piece is arranged on the laser base and the fluorescent ceramics are arranged on the reflector, the laser base and the reflector dissipate heat through the heat dissipation piece, so that the high-power characteristic of the laser light source piece is combined with the reflection mode, converted light of the fluorescent ceramics is obtained to the maximum extent, and high luminous flux is generated.

Description

Reflection type fluorescence conversion type laser excitation front-mounted headlight

Technical Field

The utility model relates to the technical field of automobile lighting lamps, in particular to a reflective fluorescence conversion type laser excitation automobile front headlight.

Background

Currently, automotive headlamp mainly adopts halogen lamps, xenon lamps, multicolor LED semiconductor car lamps, fluorescent powder conversion type LED car lamps and the like. With the continuous pursuit of green environmental protection and high-quality illumination, traditional halogen lamps and xenon lamps gradually leave the market. The multicolor LED semiconductor car lamp is difficult to be suitable for market development due to the characteristics of complex circuit, high manufacturing cost, high maintenance difficulty and the like. In contrast, the fluorescent conversion type LED car lamp has the characteristics of simple structure and flexible design, and is adopted by partial vehicles. However, YAG-Ce fluorescent powder is commonly adopted in the current LED type automobile lamp, and the red-lacking part of the spectrum is cold white light, so that the fluorescent powder has a destructive effect on pigment cells of human eyes. The laser headlight is called a new generation lighting device following the LED headlight, and has the advantages of high speed, small volume, long irradiation distance, low energy consumption, and the like. If a high-power laser automobile headlight is adopted, an efficient heat dissipation device is needed. Because of the high brightness and collimation performance of blue laser, when the blue laser is used as an excitation source, extra attention is required to heat dissipation, and the problem of light quenching is easily generated due to untimely laser heat dissipation.

The traditional Chinese patent with publication number of CN207999776U and application date of 20180131 discloses a reflective laser headlight module, fluorescent ceramics are positioned above the inner side of a reflector, and a focusing lens is positioned outside the reflector. The reflector reflects the light emitted by the ceramics into the focusing mirror. The other side surface of the fluorescent ceramic has no reflecting film, so that light transmission loss is easy to generate. In summary, the problems of illumination distance, brightness, safety, optical adjustment and the like of the existing automobile lamp are solved.

Disclosure of Invention

Aiming at the defects in the background technology, the utility model provides a reflective fluorescence conversion type laser excited front-end headlamp, which solves the problem that the reflective front-end headlamp in the prior art has reduced luminous quality due to yellow halo generated by heat accumulation.

The technical scheme of the utility model is realized as follows: the reflection type fluorescence conversion type laser excitation automobile front headlight comprises a laser light source part and a fluorescence ceramic plate, wherein the laser light source part is arranged on a laser base, a reflector module corresponding to the laser light source part is connected to the laser base, a reflector is further connected to the upper part of the laser base, and the fluorescence ceramic plate is connected in the reflector and corresponds to the reflector module; one side of the laser base and one side of the reflecting cover are connected with a heat dissipation piece, the reflecting cover and the heat dissipation piece are connected to a fixed structure, the other side of the laser base and the reflecting cover is connected with a beam shaping module, and the beam shaping module corresponds to the fluorescent ceramic plate.

Further, a mounting hole is formed in the laser base, a fixing piece for packaging the laser light source piece is arranged at the lower part of the mounting hole, and a beam shaping lens corresponding to the laser light source piece is arranged at the upper part of the mounting hole; and the laser base is also provided with a second radiating fin, and the second radiating fin corresponds to the radiating piece.

Further, the laser base is a temperature equalization plate base, and a plurality of evenly arranged heat dissipation holes are formed in the temperature equalization plate base. The laser light source component is a laser diode.

Further, the reflector module comprises a reflector and a reflector bracket, the reflector is obliquely connected to the upper part of the reflector bracket, the input end of the reflector corresponds to the laser light source piece, the output end of the reflector corresponds to the fluorescent ceramic piece, and the reflector bracket is fixed on the laser base.

Further, the fluorescent ceramic plate is connected with a heat dissipation plate, and the heat dissipation plate is connected in the reflector.

Further, the reflector comprises a cover body and a connecting plate, the heat radiating plate is connected in the cover body, the connecting plate is connected to the outer side of the cover body, the first heat radiating fins are connected to the connecting plate, the first heat radiating fins are connected to the fixing structure, and the first heat radiating fins correspond to the heat radiating pieces.

Further, the heat dissipation piece is a heat dissipation fan. The fixed knot constructs for L type panel beating, is equipped with the ventilation hole that corresponds with the radiator fan on the L type panel beating.

Further, the beam shaping module comprises a lens and a convex lens fixing frame, a lens column is connected to the convex lens fixing frame, a fixing cap is connected to the lens column, and the lens is installed on the lens column through the fixing cap.

The beneficial effects of the utility model are as follows: the laser light source part is arranged on the laser base and the fluorescent ceramics are arranged on the reflector, the laser base and the reflector dissipate heat through the heat dissipation part, so that the automobile headlight has good heat dissipation performance and sealing performance, the high-power characteristic of the laser light source part is combined with the reflection mode, the converted light of the fluorescent ceramics is obtained to the maximum extent, and therefore high luminous flux is generated, and the automobile headlight is convenient to install and maintain. The laser light source part is converged by the beam shaping lens and then is emitted into the reflector module, the reflected light is emitted into fluorescent ceramics, and unabsorbed blue light and light generated by the ceramics are mixed by the light emitting reflector module to obtain high-quality white light laser; the high-power characteristic of the laser excitation source can be fully utilized, so that the light beam is converted into light by the point light source with high luminous flux through the point light source blue light excitation source-surface light source fluorescence in the conversion process of emitting white light laser, and the energy of the excitation source and the extraction light of fluorescent ceramics are utilized to the greatest extent. After the laser light source part and the fluorescent ceramic sheet are packaged and sealed, the laser light source part and the fluorescent ceramic sheet are uniformly radiated by a radiating fan, so that the radiation of the high-power fluorescent conversion type laser excited front-mounted headlight of the automobile can be satisfied. The reflector inclines to set up and can make the fluorescent ceramics piece that vertical placed light-emitting efficiency the highest.

Drawings

In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an exploded view of the present utility model;

fig. 3 is a cross-sectional view of the present utility model.

In the figure: 1. the lens comprises a lens, 1-1, a lens mounting table, 2, a fixing cap, 2-1, a fixing clamping groove, 3, a lens column, 3-1, a connecting ring, 4, a convex lens fixing frame, 4-1, a light transmitting hole, 5, a reflecting cover, 5-1, a cover body, 5-2, a connecting plate, 5-3, a first radiating fin, 6, a fixing structure, 6-1, a vent hole, 7, a radiating fan, 8, a laser base, 8-1, a second radiating fin, 8-2, a mounting hole, 8-3, a radiating hole, 8-4, a fixing piece, 9, a laser diode, 10, a fluorescent ceramic plate, 11, a reflecting mirror module, 11-1, a reflecting mirror support, 11-2, a reflecting mirror, 12 and a beam shaping lens.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, in embodiment 1, a reflective fluorescence conversion type laser excited front headlight includes a laser light source member and a fluorescent ceramic sheet 10, the laser light source member is mounted on a laser base 8, a reflector module 11 corresponding to the laser light source member is connected to the laser base 8, a reflector 5 is further connected to an upper portion of the laser base 8, and the fluorescent ceramic sheet 10 is connected in the reflector 5 and corresponds to the reflector module 11; one side of the laser base 8 and one side of the reflecting shade 5 are connected with a heat dissipation piece, and after the laser light source piece and the fluorescent ceramic sheet 10 are packaged and sealed, the laser light source piece and the fluorescent ceramic sheet 10 are uniformly dissipated by the heat dissipation piece, so that the heat dissipation of the high-power fluorescent conversion type laser excited automobile front headlight can be met. The reflecting shade 5 and the radiating piece are both connected to the fixed structure 6, the other sides of the laser base 8 and the reflecting shade 5 are connected with a beam shaping module, and the beam shaping module corresponds to the fluorescent ceramic sheet 10. The laser light source piece is arranged on the laser base 8, the fluorescent ceramics are arranged on the reflector 11-2, the laser base 8 and the reflector 11-2 dissipate heat through the heat dissipation piece, the heat dissipation performance and the sealing performance are good, the high-power characteristic of the laser light source piece is utilized to combine with the reflection mode, the converted light of the fluorescent ceramics is obtained to the maximum extent, and therefore high luminous flux is generated, and the automobile headlight is convenient to install and maintain.

In embodiment 2, a reflection type fluorescence conversion type laser excited automobile front headlight, other embodiments 1 are different in that a mounting hole 8-2 is provided on a laser base 8, a fixing piece 8-4 for packaging a laser light source piece is provided at the lower part of the mounting hole 8-2, the fixing piece 8-4 is a cylindrical piece, a pin hole is provided at the middle part of the cylindrical piece, so that the pin of the laser light source piece extends out to be connected with a power supply, the fixing piece 8-4 is fixed on the laser base 8 by a screw, and a beam shaping lens 12 corresponding to the laser light source piece is provided at the upper part of the mounting hole 8-2; the laser base 8 is also provided with a second radiating fin 8-1, the second radiating teeth are a plurality of radiating fins which are uniformly distributed, and the second radiating fin 8-1 corresponds to the radiating piece. The laser base 8 is a temperature-equalizing plate base, a plurality of evenly arranged heat dissipation holes 8-3 are formed in the temperature-equalizing plate base, and the heat dissipation holes 8-3 are rectangular heat dissipation holes 8-3 and assist the temperature-equalizing plate to dissipate heat. The laser light source member is a laser diode 9, and the laser diode 9 is preferably a blue laser diode. The laser light source part is condensed by the beam shaping lens 121 and then is emitted into the reflector module 11, the reflected light is emitted into fluorescent ceramics, and the unabsorbed blue light and the light generated by the fluorescent ceramics sheet 10 are mixed by the light emitting reflector module 11 to obtain high-quality white light laser; the high-power characteristic of the laser excitation source can be fully utilized, so that the light beam is converted into light by the point light source with high luminous flux through the point light source blue light excitation source-surface light source fluorescence in the conversion process of emitting white light laser, and the energy of the excitation source and the extraction light of fluorescent ceramics are utilized to the greatest extent.

In the present embodiment, the mirror module 11 includes a mirror 11-2 and a mirror bracket 11-1, the mirror 11-2 is connected to the upper portion of the mirror bracket 11-1 in an inclined manner, and the input end of the mirror 11-2 corresponds to the laser light source member, and the output end of the mirror 11-2 corresponds to the fluorescent ceramic sheet 10, and the mirror bracket 11-1 is fixed to the laser base 8. The reflector 11-2 is obliquely arranged, and after the light emitted by the laser diode 9 is clustered by the beam shaping module, the light which is obliquely arranged by 80 degrees relative to the light beam intake direction is emitted by the reflector 11-2 and enters the fluorescent ceramic sheet 10, so that the light emitting efficiency of the fluorescent ceramic sheet 10 which is vertically arranged can be highest.

In this embodiment, a heat dissipation plate is connected to the fluorescent ceramic sheet 10, and the heat dissipation plate is connected to the inside of the reflector 5. The reflecting shade 5 comprises a shade body 5-1 and a connecting plate 5-2, wherein the shade body 5-1 is of a hollow quarter spherical structure, the connecting plate 5-2 is connected with a laser base 8 through a screw, a heat dissipation plate is connected in the shade body 5-1, one end of the connecting plate 5-2 is connected to the outer side of the shade body 5-1, the upper part of the connecting plate 5-2 is connected with a first heat dissipation fin 5-3, a plurality of fins which are uniformly distributed at the first heat dissipation fin 5-3 are connected to a fixed structure 6, and the first heat dissipation fin corresponds to a heat dissipation piece. The width of the first radiating fin 5-3 and the width of the second radiating fin 8-1 are the same as the width of the radiating piece, and the first radiating fin 5-3 and the second radiating fin 8-1 radiate heat in an auxiliary mode through the radiating fan 7, and the radiating piece is the radiating fan 7. The fixed structure 6 is L-shaped metal plate, the L-shaped metal plate is provided with a vent hole 6-1 corresponding to the radiating fan 7, an air inlet and an air outlet of the radiating fan 7 are respectively corresponding to the radiating fin I5-3, the radiating fin II 8-1 and the vent hole 6-1, so that the radiating fan 7 can conveniently radiate the radiating fin, and further the heat of the laser diode 9 and the fluorescent ceramic plate 10 is ensured. The beam shaping module comprises a lens 1 and a convex lens fixing frame 4, a lens column 3 is connected to the convex lens fixing frame 4, a fixing cap 2 is connected to the lens column 3, and the lens 1 is installed on the lens column 3 through the fixing cap 2. The convex lens fixing frame 4 is provided with an arc hole corresponding to the reflecting shade 5, the shade 5-1 of the reflecting shade 5 and the laser base 8 are connected with the convex lens fixing frame 4, the lens column 3 is provided with a connecting ring 3-1, and the connecting ring 3-1 is connected to the other side of the convex lens fixing frame 4 through screws. The lens 1 is provided with a lens mounting table 1-1, the fixing cap 2 is provided with a limiting clamping groove for limiting the lens mounting table 1-1, the lens mounting table 1-1 is attached to the lens column 3, the fixing cap 2 is connected with the lens column 3 through a screw, and the limiting clamping groove on the fixing cap 2 is used for fixing the lens mounting table 1-1 on the lens column 3.

The laser beam emitted by the laser diode 9 of the device is emitted into the reflector 11-2 through the beam shaping lens 12, the reflector 11-2 reflects the vertically-emitted laser by 80 degrees and then emits the laser into the fluorescent ceramic plate 10, the fluorescent ceramic plate 10 can emit light after absorbing the light, and the unabsorbed blue light and the light generated by the fluorescent ceramic plate 10 sequentially pass through the convex lens fixing column, the lens column 3 and the lens 1 after reflecting the light through the light reflecting cover 5 and then emit high-quality white light laser.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A reflection type fluorescence conversion type laser excitation front-mounted headlight is characterized in that: the laser light source device comprises a laser light source piece and a fluorescent ceramic piece (10), wherein the laser light source piece is arranged on a laser base (8), a reflector module (11) corresponding to the laser light source piece is connected to the laser base (8), a reflector (5) is further connected to the upper part of the laser base (8), and the fluorescent ceramic piece (10) is connected in the reflector (5) and corresponds to the reflector module (11); one side of the laser base (8) and the reflecting shade (5) is connected with a heat radiating piece, the reflecting shade (5) and the heat radiating piece are both connected on the fixed structure (6), the other side of the laser base (8) and the reflecting shade (5) is connected with a beam shaping module, and the beam shaping module corresponds to the fluorescent ceramic plate (10).

2. The reflective fluorescence conversion type laser excitation automotive headlamp of claim 1, wherein: the laser base (8) is provided with a mounting hole (8-2), the lower part of the mounting hole (8-2) is provided with a fixing piece (8-4) for packaging the laser light source piece, and the upper part of the mounting hole (8-2) is provided with a beam shaping lens (12) corresponding to the laser light source piece; and a second radiating fin (8-1) is arranged on the laser base (8), and the second radiating fin (8-1) corresponds to the radiating piece.

3. The reflective fluorescence conversion type laser excitation automotive headlamp of claim 2, wherein: the laser base (8) is a temperature equalization plate base, and a plurality of evenly arranged heat dissipation holes (8-3) are formed in the temperature equalization plate base.

4. A reflective fluorescence conversion type laser excited automotive headlamp as claimed in claim 3, wherein: the laser light source piece is a laser diode (9).

5. The reflective fluorescence conversion type laser excited vehicle front headlight according to any one of claims 1 to 4, wherein: the reflector module (11) comprises a reflector (11-2) and a reflector bracket (11-1), the reflector (11-2) is obliquely connected to the upper part of the reflector bracket (11-1), the input end of the reflector (11-2) corresponds to the laser light source piece, the output end of the reflector (11-2) corresponds to the fluorescent ceramic plate (10), and the reflector bracket (11-1) is fixed on the laser base (8).

6. The reflective fluorescence conversion type laser excitation automotive headlamp of claim 5, wherein: the fluorescent ceramic sheet (10) is connected with a radiating plate which is connected in the reflecting cover (5).

7. The reflective fluorescence conversion type laser excitation automotive headlamp of claim 6, wherein: the reflector (5) comprises a cover body (5-1) and a connecting plate (5-2), the heat radiating plate is connected in the cover body (5-1), the connecting plate (5-2) is connected to the outer side of the cover body (5-1), the connecting plate (5-2) is connected with a first heat radiating fin (5-3), the first heat radiating fin (5-3) is connected to a fixed structure (6), and the first heat radiating fin (5-3) corresponds to a heat radiating piece.

8. The reflective fluorescence conversion type laser excited automotive headlamp according to any one of claims 1 to 4, 6 and 7, wherein: the heat dissipation piece is a heat dissipation fan (7).

9. The reflective fluorescence conversion type laser excitation automotive headlamp of claim 8, wherein: the fixing structure (6) is an L-shaped metal plate, and the L-shaped metal plate is provided with a vent hole (6-1) corresponding to the heat dissipation fan (7).

10. The reflective fluorescence conversion type laser excitation automotive headlamp of claim 9, wherein: the beam shaping module comprises a lens (1) and a convex lens fixing frame (4), a lens column (3) is connected to the convex lens fixing frame (4), a fixing cap (2) is connected to the lens column (3), and the lens (1) is installed on the lens column (3) through the fixing cap (2).