CN212644477U - Light guide structure of vehicle lamp capable of emitting light uniformly - Google Patents
Light guide structure of vehicle lamp capable of emitting light uniformly Download PDFInfo
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- CN212644477U CN212644477U CN202021546703.1U CN202021546703U CN212644477U CN 212644477 U CN212644477 U CN 212644477U CN 202021546703 U CN202021546703 U CN 202021546703U CN 212644477 U CN212644477 U CN 212644477U
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Abstract
The utility model discloses a car light guide structure capable of emitting light uniformly, which comprises a thick-wall light guide, a light barrier, a circuit board and a plurality of light sources arranged on the circuit board, wherein the light barrier comprises a first light barrier and a second light barrier for shielding bright spots of the circuit board and the light sources, the first light barrier is arranged at the outer side of the lower side wall of the thick-wall light guide, and the second light barrier is arranged at the outer side of the upper side wall of the thick-wall light guide; one end face of the thick-wall light guide is a light incident face, the other end face of the thick-wall light guide is a light emergent face, the light incident face of the thick-wall light guide is arranged above the lamp source, the thick-wall light guide is of a multi-fold-angle structure with a plurality of folds, and emits from the light emergent face of the thick-wall light guide along the horizontal direction after being subjected to multiple total reflections in the thick-wall light guide, and the light incident from the light incident face of the thick-wall light guide is perpendicular to the light emitted from the light emergent face of. The light guide structure of the car lamp not only improves the uniformity of emergent light rays on the light emergent surface, but also hides LED particle bright spots and circuit boards at various visual angles.
Description
Technical Field
The utility model relates to an automotive lighting system technical field especially relates to an evenly luminous car light guide structure.
Background
The popularization rate of the LED technology in the application of the automobile lamp is very high at present, and particularly, the requirements of a host factory on the static effect and the lighting uniformity of the automobile front position lamp structure are higher and higher. Position lamp adopts the light-emitting form of light guide structure to be mostly LED direct projection formula structure before the car, this light guide structure includes the light guide, PCB board and LED lamp pearl, arrange PCB board and LED lamp pearl in the income plain noodles outside of light guide, LED lamp pearl is lighted the back and is directly penetrated light from the light guide through the optical focusing ware and go out, the LED lamp pearl bright speck can be seen to the opposite direction orthophoria that jets out along light, and the light guide is transparent PC, the permeability is good, this light guide structure is owing to not sheltering from the structure, LED bright speck can be seen through lateral wall about the light guide, inner circuit board isotructure, the outward appearance effect is poor.
Disclosure of Invention
The utility model aims at providing an evenly luminous car light guide structure not only improves the homogeneity of play plain noodles emergent ray, still hides each visual angle LED granule bright speck and circuit board simultaneously, makes the outward appearance more pleasing to the eye.
In order to achieve the above object, the present invention provides a light guide structure of a vehicle lamp capable of emitting light uniformly, which includes a thick-wall light guide, a light barrier, a circuit board and a plurality of light sources arranged on the circuit board, wherein the light barrier includes a first light barrier and a second light barrier for blocking bright spots of the circuit board and the light sources, the first light barrier is arranged outside a lower side wall of the thick-wall light guide, and the second light barrier is arranged outside an upper side wall of the thick-wall light guide; one end face of the thick-wall light guide is a light incident face, the other end face of the thick-wall light guide is a light emergent face, the light incident face of the thick-wall light guide is arranged above the lamp source, the thick-wall light guide is of a multi-fold-angle structure with a plurality of folds, and emits from the light emergent face of the thick-wall light guide along the horizontal direction after being subjected to multiple total reflections in the thick-wall light guide, and the light incident from the light incident face of the thick-wall light guide is perpendicular to the light emitted from the light emergent face of the thick-wall.
Further, the first light-blocking plate has a shape matching the outer shape of the upper side wall of the thick-walled light guide, and the second light-blocking plate has a shape matching the outer shape of the lower side wall of the thick-walled light guide.
Further, a distance is reserved between the light guide part where the light emitting surface of the thick-wall light guide is located and the first light barrier below the light guide part, and the light guide part is kept in a suspended state; the light incident surface is arranged on the first light guide portion.
The thick-wall light guide further comprises a second light guide part, a third light guide part and a fourth light guide part, the first light guide part, the second light guide part, the third light guide part and the fourth light guide part are sequentially connected together to form a three-folding-angle structure with three folding angles, and a light-emitting surface is arranged on the fourth light guide part;
the three folding angles are respectively a first folding angle, a second folding angle and a third folding angle, the first light guide part and the third light guide part are parallel to each other, the second light guide part is obliquely and downwards arranged between the first light guide part and the third light guide part from left to right, and the first light guide part and the third light guide part respectively form the first folding angle and the second folding angle with the second light guide part; the fourth light guide part and one end of the third light guide part, which is far away from the second light guide part, are connected to form a third folding angle, the light emitting surface is arranged below the third light guide part, and incident light rays emitted by the light source, which are incident from the light incident surface of the thick-wall light guide, are horizontally emitted from the light emitting surface of the thick-wall light guide after being reflected for three times.
Furthermore, the first break angle and the second break angle form an obtuse angle, the third break angle forms a right angle, the fourth light guide part is provided with an inclined surface parallel to and opposite to the second light guide part, the light source emits the incident light into the thick-walled light guide, the incident light is firstly totally reflected on the inclined surface of the fourth light guide part, then horizontally enters the inclined lower side wall of the second light guide part, is totally reflected on the lower side wall of the second light guide part, then enters the inclined upper side wall of the second light guide part, is totally reflected, and then is emitted out of the thick-walled light guide in the horizontal direction.
Furthermore, the light-emitting surface is provided with corn kernel optical patterns.
Compared with the prior art, the utility model has the following advantage:
the utility model discloses a car light guide structure of uniform lighting, through setting up the continuous total reflection of barn door and many dog-ear structures, not only improved the homogeneity of the emergent ray of plain noodles, still hidden each visual angle LED granule bright spot and circuit board; the first folded corner is arranged in the air, so that the thick-wall light guide has a suspended modeling effect, a three-dimensional suspended light-emitting effect is realized, and the overall attractive effect during lighting is guaranteed; the uniformly luminous car lamp light guide structure can be integrated with high beam and low beam in a combined headlight, and can also be independently used as a position lamp and a daytime running lamp to be multiplexed and independently used as an assembly to realize the function of a signal lamp.
Drawings
Fig. 1 is a schematic structural diagram of a light guide structure of a vehicle lamp capable of emitting light uniformly according to the present invention;
fig. 2 is a cross-sectional view of fig. 1.
In the figure:
1-thick-walled light guide, 11-upper side wall, 12-lower side wall, 13-first light guide portion, 14-second light guide portion, 15-third light guide portion, 16-fourth light guide portion, 17-light incident surface, 18-light emitting surface; 2-a light barrier, 21-a first light barrier, 22-a second light barrier; 3-a circuit board; 4-a light source; 5-decorative board.
Detailed Description
The structural features of the components of the present invention will be described in detail below, and if directions (up, down, left, right, front, and rear) are described, the structure shown in fig. 2 is used as a reference for description, but the practical use direction of the present invention is not limited thereto. The following describes the present invention with reference to the accompanying drawings.
Referring to fig. 1 to 2, the present embodiment discloses a light guide structure for a vehicle lamp capable of emitting light uniformly, which includes a thick-wall light guide 1, a light barrier 2, a circuit board 3 and a plurality of light sources 4 disposed on the circuit board 3, wherein the light barrier 2 includes a first light barrier 21 and a second light barrier 22 for blocking bright spots of the circuit board 3 and the light sources 4, the first light barrier 21 is disposed on the outer side of a lower side wall 12 of the thick-wall light guide 1, and the second light barrier 22 is disposed on the outer side of an upper side wall 11 of the thick-wall light guide 1;
one end face of the thick-wall light guide 1 is a light incident face 17, the other end face of the thick-wall light guide 1 is a light emitting face 18, the light incident face 17 of the thick-wall light guide 1 is arranged above the light source 2, the thick-wall light guide 1 is a multi-break-angle structure with a plurality of break angles, light emitted by the light source 4 enters from the light incident face of the thick-wall light guide 1 and is emitted from the light emitting face 18 of the thick-wall light guide 1 along the horizontal direction after being totally reflected in the thick-wall light guide 1 for a plurality of times, and the light entering from the light incident face 17 of the thick-wall light guide 1 is perpendicular to the light emitted from the. The light source 4 is an LED lamp. The plurality of light sources 4 are all white LED lights, and in some embodiments, the plurality of light sources 4 are a plurality of colored light sources. The white LED light sources are horizontally arranged on the outer side of the light incident surface 17 side by side; the first light barrier 21 and the second light barrier 22 prevent the LED particles from being seen from all directions of the front of the vehicle, and the appearance defect of strong LED particle sense is avoided.
In the present embodiment, the shape of the first light-blocking panel 21 matches the outer shape of the upper side wall 11 of the thick-walled light guide 1, and the shape of the second light-blocking panel 22 matches the outer shape of the lower side wall 12 of the thick-walled light guide 1.
In this embodiment, a distance is left between the light guide portion where the light-emitting surface of the thick-walled light guide 1 is located and the first light barrier 21 below, and the light guide portion is kept in a suspended state; the light incident surface 17 is provided on the first light guide portion 13. The requirement that the cantilever distance that can realize the molding requirement is long is set up like this, the realization that can be better is three-dimensional luminous, and floated structural design has more the third dimension. The garnish 5 is disposed below the first light guide portion 13.
In the present embodiment, the thick-walled light guide 1 further includes a second light guide portion 14, a third light guide portion 15, and a fourth light guide portion 16, the first light guide portion 13, the second light guide portion 14, the third light guide portion 15, and the fourth light guide portion 16 are sequentially connected together to form a triple-fold-angle structure having three fold angles, and the light exit surface 18 is provided on the fourth light guide portion 16;
the three folding angles are respectively a first folding angle, a second folding angle and a third folding angle, the first light guide part 13 and the third light guide part 15 are parallel to each other, the second light guide part 14 is obliquely and downwards arranged between the first light guide part 13 and the third light guide part 15 from left to right, and the first light guide part 13 and the third light guide part 15 respectively form a first folding angle and a second folding angle with the second light guide part 14; the fourth light guide portion 16 is connected to one end of the third light guide portion 15 away from the second light guide portion 14 to form a third folding angle, the light emitting surface 18 is disposed below the third light guide portion 15, and an incident light beam of the light source 4 incident from the light incident surface 17 of the thick-walled light guide 1 is reflected three times and then horizontally emitted from the light emitting surface 18 of the thick-walled light guide 1.
In the present embodiment, the first fold angle and the second fold angle form an obtuse angle, the third fold angle forms a right angle, the fourth light guide portion 16 is provided with an inclined surface parallel to and opposite to the second light guide portion 14, the light source 4 emits the incident light into the thick-walled light guide 1, the incident light is first totally reflected by the inclined surface of the fourth light guide portion 16, then horizontally enters the inclined lower side wall 12 of the second light guide portion 14, is totally reflected by the lower side wall 12 of the second light guide portion 14, then enters the inclined upper side wall 11 of the second light guide portion 14, is totally reflected, and then is emitted out of the thick-walled light guide 1 in the horizontal direction.
In this embodiment, the light emitting surface 18 is provided with an optical pattern of corn kernels. The functional light distribution requirement of the daytime running light of the position light can be met.
The utility model discloses a car light guide structure of uniform luminescence, through setting up the continuous total reflection of barn door and many dog-ear structures, not only improved the homogeneity of play plain noodles emergent ray, still hidden each visual angle LED granule bright spot and circuit board; the first folded corner is arranged in the air, so that the thick-wall light guide has a suspended modeling effect, a three-dimensional suspended light-emitting effect is realized, and the overall attractive effect during lighting is guaranteed; the uniformly luminous car lamp light guide structure can be integrated with high beam and low beam in a combined headlight, and can also be independently used as a position lamp and a daytime running lamp to be multiplexed and independently used as an assembly to realize the function of a signal lamp.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (6)
1. The car lamp light guide structure capable of emitting light uniformly is characterized by comprising a thick-wall light guide (1), a light barrier (2), a circuit board (3) and a plurality of light sources (4) arranged on the circuit board (3), wherein the light barrier (2) comprises a first light barrier (21) and a second light barrier (22) which are used for shielding bright spots of the circuit board (3) and the light sources (4), the first light barrier (21) is arranged on the outer side of a lower side wall (12) of the thick-wall light guide (1), and the second light barrier (22) is arranged on the outer side of an upper side wall (11) of the thick-wall light guide (1);
one end face of the thick-wall light guide (1) is a light incident face (17), the other end face of the thick-wall light guide (1) is a light emergent face (18), the light incident face (17) of the thick-wall light guide (1) is arranged above the lamp source (4), the thick-wall light guide (1) is of a multi-folding-angle structure with a plurality of folding angles, light rays emitted by the lamp source (4) are incident from the light incident face (17) of the thick-wall light guide (1) and are emitted from the light emergent face (18) of the thick-wall light guide (1) along the horizontal direction after being subjected to multiple total reflections in the thick-wall light guide (1), and the light rays incident from the light incident face (17) of the thick-wall light guide (1) are perpendicular to the light rays emitted from the light emergent face.
2. The light guide structure for a vehicle lamp that emits light uniformly according to claim 1, characterized in that the shape of the first light barrier (21) matches the outer shape of the upper side wall (11) of the thick-walled light guide (1), and the shape of the second light barrier (22) matches the outer shape of the lower side wall (12) of the thick-walled light guide (1).
3. The vehicular lamp light guide structure capable of emitting light uniformly according to claim 1 or 2, wherein a distance is left between a light guide part where a light emitting surface of the thick-walled light guide (1) is located and a first light barrier (21) below the light guide part, and the light guide part is kept in a suspended state; the light incident surface (17) is provided on the first light guide portion (13).
4. The light guide structure for a vehicle lamp that emits light uniformly according to claim 3, wherein the thick-walled light guide (1) further comprises a second light guide portion (14), a third light guide portion (15), and a fourth light guide portion (16), the first light guide portion (13), the second light guide portion (14), the third light guide portion (15), and the fourth light guide portion (16) are sequentially connected together to form a triple-fold-angle structure having three fold angles, and the light exit surface (18) is provided on the fourth light guide portion (16);
the three folding angles are respectively a first folding angle, a second folding angle and a third folding angle, the first light guide part (13) and the third light guide part (15) are parallel to each other, the second light guide part (14) is obliquely arranged between the first light guide part (13) and the third light guide part (15) from left to right, and the first light guide part (13) and the third light guide part (15) respectively form a first folding angle and a second folding angle with the second light guide part (14); the fourth light guide part (16) and one end of the third light guide part (15) far away from the second light guide part (14) are connected to form a third bevel, a light emitting surface (18) is arranged below the third light guide part (15), and light rays emitted by the light source (4) are incident from a light incident surface (17) of the thick-walled light guide (1), reflected for three times and then horizontally emitted from the light emitting surface (18) of the thick-walled light guide (1).
5. The light guide structure for a vehicle lamp with uniform illumination according to claim 4, wherein the first and second fold angles are obtuse angles, the third fold angle is a right angle, the fourth light guide portion (16) is provided with an inclined surface parallel to and opposite to the second light guide portion (14), the lamp source (4) emits the incident light into the thick-walled light guide (1), the incident light is firstly totally reflected on the inclined surface of the fourth light guide portion (16), then horizontally enters the inclined lower sidewall (12) of the second light guide portion (14), and is totally reflected on the inclined upper sidewall (11) of the second light guide portion (14), and then exits the thick-walled light guide (1) in the horizontal direction.
6. The light guide structure of uniform lighting for vehicular lamp according to claim 1, 2, 4 or 5, characterized in that the light-emitting surface (18) is provided with corn kernel optical patterns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021546703.1U CN212644477U (en) | 2020-07-30 | 2020-07-30 | Light guide structure of vehicle lamp capable of emitting light uniformly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021546703.1U CN212644477U (en) | 2020-07-30 | 2020-07-30 | Light guide structure of vehicle lamp capable of emitting light uniformly |
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| CN212644477U true CN212644477U (en) | 2021-03-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266799A (en) * | 2021-03-30 | 2021-08-17 | 海纳川海拉(天津)车灯有限公司 | Car lamp without lighting spot defect |
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2020
- 2020-07-30 CN CN202021546703.1U patent/CN212644477U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266799A (en) * | 2021-03-30 | 2021-08-17 | 海纳川海拉(天津)车灯有限公司 | Car lamp without lighting spot defect |
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