Thick-wall part and vehicle lamp
By introducing microstructures and media into the thick-walled parts of the headlights and adjusting the light exit path, the problem of dark areas of the headlights is solved and the lighting performance of the headlights is improved.
Patent Information
- Application Number
- CN202422162377.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-03
AI Technical Summary
In existing car lights, light cannot exit through the surface of the connecting ladder, resulting in local dark areas, affecting the performance and quality of the car lights.
A thick-walled piece is designed, including the thick-walled piece body and a built-in microstructure. The microstructure is filled with a medium with a refractive index lower than the thick-walled piece body. The concentrating surface refracts the light beam into different directions. The inclined surface reflects light to ensure that the light emits from the outgoing light side and reduces dark areas.
By adjusting the exit path of light, the dark areas on the headlights are reduced and the lighting performance quality of the headlights is improved.
Smart Images
Figure CN223121229U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicle lamps, and particularly relates to a thick-wall part and a vehicle lamp. Background Art
[0002] In the optical system of vehicle lamps, the thick-wall part technology is a commonly used technology to make vehicle lamps meet regulations and lighting effects. However, local dark areas often appear in vehicle lamp systems using this technology, which affects the performance and quality of vehicle lamps.
[0003] In the prior art, due to manufacturing and processing requirements, a certain inclination angle often needs to be set at the connection step between adjacent light-condensing structures of the thick-wall part, so that after the light is emitted from the light source, the light cannot be emitted through the surface of the connection step, resulting in dark areas on the vehicle lamp, which has a great impact on the lighting performance and quality of the vehicle lamp. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is: aiming at the problem in the prior art that after the light is emitted from the light source, the light cannot be emitted through the surface of the connection step, resulting in dark areas on the vehicle lamp, a thick-wall part and a vehicle lamp are provided.
[0005] To solve the above technical problem, on the one hand, an embodiment of the utility model provides a thick-wall part, including a thick-wall part main body and a plurality of microstructures arranged in the thick-wall part main body. The plurality of microstructures are spaced apart from each other. The thick-wall part main body has a light-incident side and a light-emitting side. A light-condensing surface and an inclined surface are provided on the light-incident side.
[0006] The microstructures are arranged between the light-incident side and the light-emitting side. A medium is filled in the microstructures, and the refractive index of the medium is lower than that of the thick-wall part main body.
[0007] The light-condensing surface can refract a first light beam of the thick-wall part main body incident from the light-condensing surface into a second light beam propagating in a first direction. The microstructure can reflect the second light beam irradiated on the microstructure to form a third light beam propagating in a second direction. Wherein, the first direction intersects with the second direction.
[0008] The inclined surface can reflect the third light beam to form a fourth light beam propagating in the first direction. The fourth light beam is emitted from the thick-wall part main body through the light-emitting side.
[0009] Optionally, a plurality of the light-condensing surfaces and a plurality of the inclined surfaces are provided on the light-incident side. The plurality of light-condensing surfaces are spaced apart from each other along the second direction, and each inclined surface is connected between two adjacent light-condensing surfaces.
[0010] Optionally, the medium is a gas, a solid or a liquid.
[0011] Optionally, the micro-structure extends along a third direction and penetrates through the main body of the thick-walled member;
[0012] The third direction is perpendicular to the first direction and the second direction.
[0013] Optionally, one side of the micro-structure facing the inclined surface has a first reflecting surface, and the first reflecting surface can reflect the second light beam irradiated onto the first reflecting surface to form a third light beam propagating along the second direction.
[0014] Optionally, the cross-section of the micro-structure perpendicular to the third direction is triangular.
[0015] Optionally, the surface of the micro-structure is coated with a reflective film or a semi-transmissive and semi-reflective film for enhancing reflection.
[0016] Optionally, the inclined surface is attached with texture or particles for making the light more uniform.
[0017] Optionally, a plurality of the micro-structures are provided in the main body of the thick-walled member, and the plurality of micro-structures are spaced apart from each other in the first direction and the second direction.
[0018] According to the thick-walled member provided by the embodiment of the present invention, when the first light beam irradiates onto the light-condensing surface, the light-condensing surface refracts the first light beam into a second light beam propagating along the first direction. A part of the second light beam directly irradiates onto the light-emitting side along the first direction and is emitted from the main body of the thick-walled member through the light-emitting side. Another part of the second light beam irradiates onto the micro-structure, and the micro-structure reflects this part of the second light beam into a third light beam propagating along the second direction. When the third light beam propagates to the inclined surface, the inclined surface reflects the third light beam into a fourth light beam, and the fourth light beam propagates along the first direction to the light-emitting side and is emitted from the main body of the thick-walled member through the light-emitting side. By adjusting the outgoing path of part of the light refracted by the light-condensing surface through the micro-structure, light is emitted from the inclined surface, the dark area on the vehicle lamp is reduced, and the lighting performance quality of the vehicle lamp is improved.
[0019] On the other hand, the embodiment of the present invention provides a vehicle lamp, including a lamp cover, a light source and the above-mentioned thick-walled member. The lamp cover has an accommodating space, the thick-walled member and the light source are installed in the accommodating space, the light source is located on a side of the light-condensing surface away from the light-emitting side and is spaced apart from the light-condensing surface. Description of the Drawings
[0020] Figure 1 is a schematic diagram of a conventional thick-walled member after removing a part of the structure;
[0021] Figure 2 is Figure 1 a schematic diagram of the enlarged A connecting the light-emitting side and the inclined surface of
[0022] Figure 3 It is a schematic structural diagram of a thick-walled part provided by an embodiment of the present utility model;
[0023] Figure 4 is Figure 3 An enlarged view of C shows a schematic diagram connecting the light-emitting side and the inclined surface.
[0024] The reference numerals in the specification are as follows:
[0025] 1. Main body of the thick-walled part; 2. Microstructure; 3. Condensing surface; 4. Light-emitting side; 5. Inclined surface; 6. First reflecting surface; 7. Light source; 8. Lamp shade; 100. Thick-walled part. Specific embodiments
[0026] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0027] As Figure 3 and Figure 4 shown, an embodiment of the present utility model provides a thick-walled part 100, which includes a main body 1 of the thick-walled part and a plurality of microstructures 2 arranged in the main body 1 of the thick-walled part. The plurality of microstructures 2 are spaced apart from each other. The main body 1 of the thick-walled part has a light-incident side and a light-emitting side 4. A condensing surface 3 and an inclined surface 5 are provided on the light-incident side;
[0028] The microstructures 2 are arranged between the light-incident side and the light-emitting side 4. The microstructures 2 are filled with a medium, and the refractive index of the medium is lower than that of the main body 1 of the thick-walled part;
[0029] The condensing surface 3 can refract the first light beam of the main body 1 of the thick-walled part incident from the condensing surface 3 into a second light beam propagating in the first direction. The microstructures 2 can reflect the second light beam irradiated on the microstructures 2 to form a third light beam propagating in the second direction; wherein, the first direction intersects with the second direction;
[0030] The inclined surface 5 can reflect the third light beam to form a fourth light beam propagating in the first direction; the fourth light beam is emitted from the light-emitting side 4 of the thick-walled part body 1. In order to maximize the system light efficiency, i.e., the light flux utilization rate, the light is usually collimated and then emitted from the light-emitting side 4 in the first direction. In this case, since there is no light emission from the inclined surface 5, when looking at the vehicle lamp from some positions with the human eye, a dark area can be observed on the inclined surface 5. At the same time, the characteristic of the light source 7 (LED lamp) for emitting the first light beam is usually strong central energy. As the beam angle increases, the energy will gradually decrease. When applied to the lighting performance of the lamp (vehicle lamp), it is easy to make the area near the center of the light source 7 (LED lamp) on the light-emitting side 4 of the thick-walled part body 1 brighter and the edge area (relatively far from the center) darker. When the human eye observes the lamp (vehicle lamp) at a certain position, there will be a dark area on the inclined surface 5. In this embodiment, Figure 2 θ in the figure is the angle between the inclined surface 5 and the first direction. The inclined surface 5 can be the side wall surface of the side wall of the thick-walled part body 1 or the stepped surface of the draft step of the thick-walled part body 1. In the traditional thick-walled part body 1, when the inclined surface 5 is the side wall surface, when the human eye looks at the side wall surface at a position at a certain angle to the first direction, since the light is emitted along the first direction, the light will not propagate to the side wall surface, resulting in no light emission on the side wall surface. When looking with the human eye, it appears as a dark area on the side wall surface; when the inclined surface 5 is the stepped surface of the draft step, when the human eye looks at the stepped surface at a position coinciding with the first direction (front view), since there is no light emission on the stepped surface, it appears as a dark area on the stepped surface. In this embodiment, the reflection forms of the micro-structure 2 and the inclined surface 5 are total reflection. In other embodiments, the reflection forms of the micro-structure 2 and the inclined surface 5 are not total reflection. The second direction in this embodiment is the Y direction. In other embodiments, the second direction is not the Y direction.
[0031] In one embodiment, a plurality of light condensing surfaces 3 and a plurality of inclined surfaces 5 are provided on the light-incident side. The plurality of light condensing surfaces 3 are spaced from each other along the second direction, and each inclined surface 5 is connected between two adjacent light condensing surfaces 3. The interval distance of the corresponding light sources 7 of the adjacent light condensing surfaces 3 in the first direction is usually controlled at about 10 - 20 mm, and the angle θ between the inclined surface 5 and the first direction is usually controlled in the range of 3° - 8°. Due to the requirements of the processing structure, the thick-walled system with a larger inclination of the lamp cover 8 makes the difficulty of light emission on the inclined surface 5 of the thick-walled system with a larger inclination of the lamp cover 8 greater than that of the thick-walled system of the ordinary lamp cover 8. Such as Figure 1 and Figure 2As shown, in the thick-walled system with a large inclination of the lamp cover 8, the condenser surface 3 refracts the first light beam into a second light beam collimated in the first direction. When the second light beam propagates in the first direction, no light exits from the inclined surface 5, and a dark area defect will be seen in the headlamp light from the front view angle. In this embodiment, the condenser surface 3 refracts the first light beam into a second light beam collimated in the first direction, the micro-structure 2 reflects part of the second light beam into a third light beam collimated in the second direction, and the inclined surface 5 reflects the third light beam reflected by the micro-structure 2 into a fourth light beam collimated in the first direction, and makes the fourth light beam propagate collimated in the first direction to the light-emitting side 4 and emit from the light-emitting side 4 out of the thick-walled part main body 1. When an observer observes the headlamp at the front view angle, light exits from the inclined surface 5, so that there is no dark area on the inclined surface 5.
[0032] In one embodiment, the first direction is perpendicular to the second direction;
[0033] Or,
[0034] The first direction is the front-back direction of the vehicle, and the second direction is the left-right direction of the vehicle. In this embodiment, the X direction in the drawing is the first direction, and the Y direction is the second direction.
[0035] In one embodiment, the micro-structure 2 can be a structure that penetrates through the thick-walled part main body 1 at both ends, or a structure with both ends closed. The material of the medium in the micro-structure 2 is not particularly limited, as long as the refractive index of the medium is lower than that of the thick-walled part main body 1, so that the thick-walled part main body 1 is an optically dense medium and the medium is an optically sparse medium, so that total internal reflection can occur when the second light beam in the thick-walled part main body 1 irradiates on the micro-structure 2.
[0036] In one embodiment, the medium is a gas, a solid or a liquid. When the medium is a gas, the micro-structure 2 is a hollow structure.
[0037] In one embodiment, the micro-structure 2 extends along the third direction and penetrates through the thick-walled part main body 1;
[0038] The third direction is perpendicular to the first direction and the second direction. In this embodiment, the third direction is the Z direction. By arranging the micro-structure 2 to extend along the Z direction, the micro-structure 2 can better reflect the light irradiated on the micro-structure 2 along the first direction to the inclined surface 5 along the second direction. The micro-structure 2 penetrates through the thick-wall member main body 1, enabling the air in the external environment to enter the micro-structure 2, making the refractive index of the air in the micro-structure 2 lower than that of the thick-wall member main body 1, so that total internal reflection can occur when the light is irradiated on the micro-structure 2 along the first direction. At the same time, arranging the micro-structure 2 to penetrate through the thick-wall member main body 1 is convenient for production and can reduce the processing cost. The thick-wall member main body 1 can be made of plastic materials such as PMMA or PMMC. This application does not add additional components to the thick-wall member main body 1, reducing costs and being compatible with various existing rear-wall structural members.
[0039] In one embodiment, one side of the micro-structure 2 facing the inclined surface 5 has a first reflection surface 6; the first reflection surface 6 can reflect the second light beam irradiated on the first reflection surface 6 to form a third light beam propagating along the second direction. In this embodiment, the shape of the micro-structure 2 is not limited. The cross-section of the micro-structure 2 perpendicular to the third direction can be a semi-circular shape, a triangular shape, a parallelogram shape, etc. The micro-structure 2 only needs to satisfy that it can reflect the second light beam irradiated on the first reflection surface 6 along the first direction to the third light beam propagating along the second direction.
[0040] In one embodiment, the cross-section of the micro-structure 2 perpendicular to the third direction is triangular. In this embodiment, the cross-section of the micro-structure 2 perpendicular to the third direction is a right triangle, and the two right sides of the cross-section of the micro-structure 2 perpendicular to the third direction are respectively parallel to the first direction and the second direction. In this way, the light will not be irradiated on the two planes corresponding to the two right sides, so that only the first reflection surface 6 of the micro-structure 2 reflects the light, and the other two surfaces do not reflect the light, enabling the light entering the thick-wall member main body 1 to propagate along the predetermined first direction or second direction. In other embodiments, the cross-section of the micro-structure 2 perpendicular to the third direction is a right triangle.
[0041] In one embodiment, the surface of the micro-structure 2 is coated with a reflection film or a semi-transmissive semi-reflective film for enhancing reflection. The reflection film and the semi-transmissive semi-reflective film can enhance the reflection effect of the micro-structure 2.
[0042] In one embodiment, the inclined surface 5 is attached with leather grains or particles for making the light more uniform. The leather grain patterns and the particle protrusions can scatter the light, making the light more uniform.
[0043] In one embodiment, a plurality of microstructures 2 are spaced apart from each other in both the first direction and the second direction. In this embodiment, the sizes of the plurality of microstructures 2 and the angles formed with the first direction are all independent, that is, the sizes of the microstructures 2 at different positions may be the same or different; the angles formed by the microstructures 2 at different positions with the first direction may be the same or different. During production, it is only necessary to ensure that the light irradiated onto each microstructure 2 can be totally reflected along the second direction onto the inclined surface 5. The position of the microstructure 2 in the thick-walled part body 1, the size of the microstructure 2, and the angle formed by the microstructure 2 with the first direction can all be adjusted without limitation.
[0044] In one embodiment, the inclined surface 5 includes a connected transition surface and a second reflection surface, and the second reflection surface can reflect the third light beam and form a fourth light beam. In this embodiment, θ is the angle (tilt angle) between the second reflection surface and the first direction. It is only necessary to set the area corresponding to the total reflection light incident on the inclined surface 5 as the second reflection surface. The angle θ formed by the second total reflection surface and the first direction can be adjusted, as long as the light irradiated from the microstructure 2 can be totally reflected on the second reflection surface. For other regions, only the draft requirements and manufacturing requirements need to be met.
[0045] According to the thick-walled part 100 provided by the embodiment of the present invention, when the first light beam irradiates onto the condensing surface 3, the condensing surface 3 refracts the first light beam into a second light beam propagating along the first direction. A part of the second light beam directly irradiates onto the light-emitting side 4 along the first direction and exits the thick-walled part body 1 through the light-emitting side 4. Another part of the second light beam irradiates onto the microstructure 2, and the microstructure 2 reflects this part of the second light beam into a third light beam propagating along the second direction. When the third light beam propagates to the inclined surface 5, the inclined surface 5 reflects the third light beam into a fourth light beam, and the fourth light beam propagates along the first direction to the light-emitting side 4 and exits the thick-walled part body 1 through the light-emitting side 4. By adjusting the exit path of some of the light refracted by the condensing surface 3 through the microstructure 2, light is emitted from the inclined surface 5, reducing the dark area on the vehicle lamp and improving the lighting performance quality of the vehicle lamp.
[0046] In addition, an embodiment of the present invention provides a vehicle lamp, including a lamp cover 8, a light source 7, and the thick-walled part 100 of the above embodiment. The lamp cover 8 has an accommodating space, and the thick-walled part 100 and the light source 7 are installed in the accommodating space. The light source 7 is located on the side of the condensing surface 3 away from the light-emitting side 4 and is spaced from the condensing surface 3.
[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should all be included within the protection scope of the present invention.
Claims
1. A thick-walled part, characterized in that, It includes a thick-walled part body and a plurality of microstructures arranged in the thick-walled part body. The plurality of microstructures are spaced from each other. The thick-walled part body has a light-incident side and a light-emitting side. A condensing surface and an inclined surface are provided on the light-incident side. The microstructures are arranged between the light-incident side and the light-emitting side. A medium is filled in the microstructures, and the refractive index of the medium is lower than that of the thick-walled part body. The condensing surface can refract the first light beam of the thick-walled part body incident on the condensing surface into a second light beam propagating in the first direction. The microstructures can reflect the second light beam irradiated on the microstructures to form a third light beam propagating in the second direction. Wherein, the first direction intersects with the second direction. The inclined surface can reflect the third light beam to form a fourth light beam propagating in the first direction. The fourth light beam is emitted from the thick-walled part body through the light-emitting side.
2. The thick-walled part according to claim 1, wherein A plurality of the condensing surfaces and a plurality of the inclined surfaces are provided on the light-incident side. The plurality of condensing surfaces are spaced from each other along the second direction, and each inclined surface is connected between two adjacent condensing surfaces.
3. The thick-walled part according to claim 1, wherein, The medium is a gas, a solid or a liquid.
4. The thick-walled part according to claim 1, characterized in that, The microstructures extend along a third direction and penetrate through the thick-walled part body. The third direction is perpendicular to the first direction and the second direction.
5. The thick-walled part according to claim 4, wherein One side of the microstructures facing the inclined surface has a first reflecting surface, and the first reflecting surface can reflect the second light beam irradiated on the first reflecting surface to form a third light beam propagating in the second direction.
6. The thick-walled part according to claim 5, characterized in that, The cross-section of the microstructures perpendicular to the third direction is triangular.
7. The thick-walled part according to claim 1, wherein The surface of the microstructures is coated with a reflecting film or a semi-transparent and semi-reflecting film for enhancing reflection.
8. The thick-walled part according to claim 1, characterized in that, The inclined surface is attached with a texture or particles for making the light more uniform.
9. A vehicle lamp, characterized in that, It includes a lamp shade, a light source and the thick-walled part according to any one of claims 1-8. The lamp shade has a receiving space. The thick-walled part and the light source are installed in the receiving space. The light source is located on the side of the condensing surface away from the light-emitting side and is spaced from the condensing surface.