CN109539177B - Butterfly-shaped light guide sheet and method for realizing large-area light emission of lamp signal lamp of vehicle lamp - Google Patents
Butterfly-shaped light guide sheet and method for realizing large-area light emission of lamp signal lamp of vehicle lamp Download PDFInfo
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- CN109539177B CN109539177B CN201910016402.3A CN201910016402A CN109539177B CN 109539177 B CN109539177 B CN 109539177B CN 201910016402 A CN201910016402 A CN 201910016402A CN 109539177 B CN109539177 B CN 109539177B
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- 238000000034 method Methods 0.000 title description 4
- 230000000694 effects Effects 0.000 claims abstract description 30
- 238000005452 bending Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 15
- 238000009792 diffusion process Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 8
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 6
- 229920005372 Plexiglas® Polymers 0.000 claims description 3
- 238000000149 argon plasma sintering Methods 0.000 claims description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 claims description 3
- 239000010985 leather Substances 0.000 description 6
- 238000000265 homogenisation Methods 0.000 description 2
- 230000001795 light effect Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/236—Light guides characterised by the shape of the light guide
- F21S43/241—Light guides characterised by the shape of the light guide of complex shape
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to a butterfly-shaped light guide piece, which comprises a transverse light guide part and a pair of inclined light guide parts which are connected with the transverse light guide part and incline upwards and downwards respectively; the rear side of the transverse light guide part is an incidence plane; the inclined light guide part comprises a bending part with curvature and a straight part connected with the bending part and extending; the front side of the bending part is provided with a first total reflection surface, the front side of the straight part is provided with a second total reflection surface, and the rear side of the straight part is provided with a third total reflection surface; the foremost end of the straight part is cone-shaped; the outer side of the forefront end of the straight part is a first strip-shaped pattern surface, the inner side of the forefront end of the straight part is a second strip-shaped pattern surface, one of the strip-shaped divisions of the first strip-shaped pattern surface and the strip-shaped division of the second strip-shaped pattern surface is perpendicular to the YOZ surface, and the other strip-shaped division of the first strip-shaped pattern surface is parallel to the YOZ surface; the first total reflection surface is matched with the first strip-shaped pattern surface, so that light rays are reflected and hit the second strip-shaped pattern surface, and a high-lighting effect is formed; the second total reflection surface and the third total reflection surface form a low-lighting effect.
Description
Technical Field
The invention relates to a lamp light guide body, in particular to a butterfly-shaped light guide piece and a method for realizing large-area light emission of a lamp signal lamp.
Background
The lamp function luminous surface opening of car light front and back position is great (more than 30 mm) the condition, and the luminous form of often adopting is that the direct-injection milky discrete material part of multirow LED or multirow LED penetrate milky discrete material part or take transparent PC material part of dermatoglyph granule behind the primary mirror, and this scheme LED quantity doubles with high costs, and in order to realize more even lighting effect, LED and luminous surface or speculum and luminous surface longitudinal space requirement are big, and the lighting effect is comparatively monotonous simultaneously.
Disclosure of Invention
The invention aims to solve the problems of high large-area lighting cost and large longitudinal space requirement in the current automobile lamp field, and provides a butterfly-shaped light guide sheet for realizing the large-area lighting scheme of an automobile lamp, which needs fewer LEDs and saves the longitudinal internal space at the same time so as to be compact and small.
The invention adopts the following technical scheme:
a butterfly-shaped light guide sheet, the cross section of which in a plane parallel to the XOZ plane is in a horizontal herringbone shape; comprises a transverse light guide part and a pair of inclined light guide parts which are respectively inclined upwards and downwards and are connected with the transverse light guide part; the rear side of the transverse light guide part is an incidence plane 1; the inclined light guide part comprises a section of bending part with curvature and a straight part connected with the bending part and extending; the front side of the bending part is provided with a first total reflection surface 2, the front side of the straight part is provided with a second total reflection surface 6, and the rear side of the straight part is provided with a third total reflection surface 7; the foremost end of the straight part is conical; the outer side of the forefront end of the straight part is provided with a first strip-shaped pattern surface 4, the inner side of the forefront end of the straight part is provided with a second strip-shaped pattern surface 5, one of the strip-shaped divisions of the first strip-shaped pattern surface 4 and the strip-shaped division of the second strip-shaped pattern surface 5 is vertical to the YOZ surface, and the other strip-shaped division of the first strip-shaped pattern surface is parallel to the YOZ surface; the first total reflection surface 2 is matched with the first strip-shaped pattern surface 4, so that light rays are reflected and hit the second strip-shaped pattern surface 5, and a high-lighting effect is formed; the second total reflection surface 6 and the third total reflection surface 7 form a low-lighting effect.
Further, the transverse light guide part is a light guide body inner distribution 0, and the thickness of the light guide body inner distribution 0 is 3.5mm.
Further, the lateral light guide portion is provided with a plurality of light sources 8 along the Y direction.
Further, the transverse light guide portion is provided with a circular elongated light guide body 10 prefabricated and matched along the Y direction.
Further, the first total reflection surface 2 is inclined at 45 ° and 6mm wide.
Further, the first total reflection surface 2 is parallel to the first stripe pattern surface 4 on the side of the inclined light guiding portion where the first total reflection surface is located.
Further, the first rib surface 4 is divided into vertical ribs perpendicular to the YOZ surface, and the second rib surface 5 is divided into horizontal ribs parallel to the YOZ surface.
Still further, the vertical bar pattern and the horizontal bar pattern are 1.5mm wide, and the vertical bar pattern and the horizontal bar pattern can be divided into interchangeable positions, namely the outer side is the horizontal bar pattern and the inner side is the vertical bar pattern.
Furthermore, the butterfly-shaped light guide sheet is internally provided with transparent PC material with higher light transmittance, and the second total reflection surface 6 and the third total reflection surface 7 are provided with dermatoglyph particles; alternatively, the butterfly-shaped light guide sheet internal material is PLEXIGLAS LED 8N LD12, LD24, LD48, LD96 transparent PMMA light curtain material produced by Evonik, and the material itself has the characteristic of scattered light.
The method for realizing large-area light emission of the signal lamp by the butterfly-shaped light guide plate controls the light horizontal direction of the area with high lighting effect, namely the Y-direction diffusion degree by adjusting the radian of the vertical rib patterns; the degree of diffusion in the vertical direction, namely the Z direction, of the light high-lighting effect area is controlled by adjusting the radian of the transverse rib patterns; the light scattering and emitting characteristics of the leather grain particles or the parts of the second total reflection surface and the third total reflection surface realize the lighting effect of uniform low brightness of the large luminous surface of the second total reflection surface 6, and the first strip-shaped pattern surface and the second strip-shaped pattern surface realize the lighting effect of uniform high brightness of the small luminous surface of the second strip-shaped pattern surface 5 under the controllable diffusion degree.
The invention has the beneficial effects that:
1) The butterfly-shaped light guide body with large-area light emission, uniform and low-brightness large light emitting surface and uniform and high-brightness small light emitting surface is internally assembled at low cost; the number of LEDs required is small, and the longitudinal internal space is saved.
2) Light enters the incident surface at a certain angle to be totally reflected in the incident surface, then the light is deflected upwards and downwards through the two sections of total reflection surfaces, and then the light is continuously reflected and transmitted at the wing, and then reflected out of the transverse rib pattern surfaces on the right upper vertical rib pattern surface and the right lower vertical rib pattern surface towards the driving direction to form a high-bright-spot light effect, and the front and rear surfaces of the upper wing and the lower wing are provided with leather veins to form a low-bright-spot light effect.
3) The upper and lower total reflection surfaces are matched with the outer vertical rib pattern surfaces, so that light rays are reflected to the inner horizontal rib pattern surfaces, and the horizontal direction of the light rays, namely the Y-direction diffusion angle, can be controlled by adjusting the radian of the vertical rib pattern;
4) The outer vertical rib pattern surface is matched with the inner horizontal rib pattern surface, so that light is refracted to the driving direction, and the vertical direction of the light, namely the Z-direction diffusion angle, can be controlled by adjusting the radian of the horizontal rib pattern;
5) Finally, the light homogenization is realized through the matching of the upper vertical rib pattern surface and the lower horizontal rib pattern surface of the wings, the light distribution regulation requirement of the front and rear position lamps is met, the uniform low-brightness light-emitting characteristic of the large luminous surface by leather grain particles or the scattered light of the part is realized, and the uniform high-brightness effect of the small luminous surface by the matching of the vertical rib pattern surface and the horizontal rib pattern surface is realized.
6) The structure is simple, the model is novel, the longitudinal space layout is compact, the unique lighting effect of uniform low brightness of a large lighting surface and uniform high brightness of a small lighting surface is realized, the time sequence lighting effect can be realized by a plurality of LEDs, and the car lamp is rich in technological sense.
Drawings
FIG. 1 is a schematic perspective view of a butterfly light guide according to the present invention.
Fig. 2 is a schematic perspective view of an assembled light source module composed of a butterfly-shaped light guide and a plurality of light sources in the first embodiment.
Fig. 3 is a schematic perspective view of an assembled butterfly light guide and a circular strip light guide in the second embodiment.
In the figure, the light guide body is internally provided with the light guide body, the incident surface, the first total reflection surface, the wing part, the first strip-shaped pattern surface, the second total reflection surface, the third total reflection surface, the light source, the light-emitting source, the light source, the round strip-shaped light guide body and the bracket.
Detailed Description
The invention will be further described with reference to the drawings and specific examples.
Embodiment one:
referring to fig. 1-2, a butterfly-shaped light guide having a cross-section in a plane parallel to the XOZ plane in a lying chevron shape; comprises a transverse light guide part and a pair of inclined light guide parts which are respectively inclined upwards and downwards and are connected with the transverse light guide part; the rear side of the transverse light guide part is an incidence plane 1; the inclined light guide part comprises a section of bending part with curvature and a straight part connected with the bending part and extending; the front side of the bending part is provided with a first total reflection surface 2, the front side of the straight part is provided with a second total reflection surface 6, and the rear side of the straight part is provided with a third total reflection surface 7; the foremost end of the straight part is conical; the outer side of the forefront end of the straight part is provided with a first strip-shaped pattern surface 4, the inner side of the forefront end of the straight part is provided with a second strip-shaped pattern surface 5, one of the strip-shaped divisions of the first strip-shaped pattern surface 4 and the strip-shaped division of the second strip-shaped pattern surface 5 is vertical to the YOZ surface, and the other strip-shaped division of the first strip-shaped pattern surface is parallel to the YOZ surface; the first total reflection surface 2 is matched with the first strip-shaped pattern surface 4, so that light rays are reflected and hit the second strip-shaped pattern surface 5, and a high-lighting effect is formed; the second total reflection surface 6 and the third total reflection surface 7 are provided with dermatoglyph particles, so that a low-lighting effect is formed.
In this embodiment, referring to fig. 1, the lateral light guide is a light guide inner fitting 0, and the light guide inner fitting 0 has a thickness of 3.5mm.
In this embodiment, referring to fig. 2, the lateral light guide portion is provided with a plurality of light sources 8 in the Y direction.
In this embodiment, referring to fig. 2, the first total reflection surface 2 is inclined at 45 ° and 6mm wide.
In this embodiment, referring to fig. 2, the first total reflection surface 2 is parallel to the first rib surface 4 on the inclined light guiding portion side.
In this embodiment, referring to fig. 2, the first rib surface 4 is divided into vertical ribs perpendicular to the YOZ surface, and the second rib surface 5 is divided into horizontal ribs parallel to the YOZ surface. The principle is introduced as follows: with continued reference to fig. 1, light enters the incident surface 1 at a certain angle to be totally reflected inside, and is deflected upwards and downwards by the two sections of total reflection surfaces 2, and then is transmitted by continuous total reflection at the wing 3, and is reflected and emitted by the first strip-shaped pattern surfaces 4 (vertical strip patterns) on the upper right and lower right and then the second strip-shaped pattern surfaces 5 (horizontal strip patterns) in the driving direction to form a high-bright-point lamp effect, and the front and rear surfaces 6 and 7 at the upper and lower wings form a low-bright-point lamp effect. The upper and lower total reflection surfaces 2 are matched with the right first strip pattern surface 4, so that light rays are reflected and hit the left second strip pattern surface 5 (transverse strip pattern), and the horizontal direction of the light rays, namely the Y-direction diffusion angle, can be controlled by adjusting the radian of the vertical strip pattern; the right first strip-shaped pattern surface 4 is matched with the left second strip-shaped pattern surface 5, so that light is refracted to the driving direction, and the vertical direction of the light, namely the Z-direction diffusion angle, can be controlled by adjusting the radian of the transverse strip-shaped pattern; finally, the light homogenization is realized through the matching of the upper vertical rib pattern surface and the lower horizontal rib pattern surface of the wings, the light distribution regulation requirement of the front and rear position lamps is met, and the effects that the large luminous surface 6 is uniformly low-brightness by leather grain, the small luminous surface 5 is uniformly high-brightness by matching the vertical rib pattern surface and the horizontal rib pattern surface are realized. The invention has simple structure, novel model and compact longitudinal space layout, realizes the unique lighting effect of uniform low brightness of a large light emitting surface and uniform high brightness of a small light emitting surface, and can realize the time sequence lighting effect by a plurality of LEDs so that the car lamp has a scientific sense.
In this embodiment, the vertical rib pattern and the horizontal rib pattern are 1.5mm in width, and the vertical rib pattern and the horizontal rib pattern can be divided into interchangeable positions, namely, the outer side is the horizontal rib pattern and the inner side is the vertical rib pattern. Not indicated in the figures.
In this embodiment, the butterfly-shaped light guide sheet is made of a transparent PC material with high light transmittance; or, the butterfly-shaped light guide sheet is internally matched with PLEXIGLAS LED 8N LD12, LD24, LD48 and LD96 transparent PMMA light curtain material produced by Evonik, and the material has the characteristic of scattered light, and leather grain particles on the front and rear surfaces 6 and 7 at the upper wing and the lower wing close to the total reflection surface are eliminated.
Referring to fig. 2, a plurality of light sources 8, an aluminized or similarly spray-painted white paint bracket 11, a shading ring 12 and the butterfly-shaped light guide 0 are included. The aluminum plating support or the similar spraying white paint support 11 plays a role in reflecting light and shielding internal parts of the appearance, the shading decorative ring 12 plays a role in shielding the light source 8, and stray light is prevented from being emitted to the driving direction.
When the butterfly-shaped light guide sheet realizes the large-area light-emitting function of the signal lamp, the light horizontal direction, namely the Y-direction diffusion degree of the area with the high lighting effect is controlled by adjusting the radian of the vertical rib patterns; the degree of diffusion in the vertical direction, namely the Z direction, of the light high-lighting effect area is controlled by adjusting the radian of the transverse rib patterns; the light scattering and emitting characteristics of the leather grain particles or the parts of the second total reflection surface and the third total reflection surface realize the lighting effect of uniform low brightness of the large luminous surface of the second total reflection surface 6, and the first strip-shaped pattern surface and the second strip-shaped pattern surface realize the lighting effect of uniform high brightness of the small luminous surface of the second strip-shaped pattern surface 5 under the controllable diffusion degree.
Embodiment two:
referring to fig. 3, the present embodiment is different from the first embodiment in that: the transverse light guide portion is provided with a circular elongated light guide 10 prefabricated and matched in the Y direction. The butterfly-shaped light guide is supported by an aluminized or paint-like support 13.
In this embodiment, the right side of the circular strip-shaped light guide body 10 has a tooth surface, so that light is emitted to the optical incident surface 1 of the butterfly-shaped light guide body 0, less light source is required, and meanwhile, the shading decorative ring 12 in fig. 2 is omitted, so that the cost is low.
The other structural and functional implementation manners are the same as those of the first embodiment.
Both of the foregoing embodiments are preferred embodiments of the invention, and those skilled in the art can make various changes and modifications thereto without departing from the spirit of the invention, which is intended to be within the scope of the invention as defined in the appended claims.
Claims (7)
1. A butterfly-shaped light guide sheet, characterized in that:
the cross section of the butterfly-shaped light guide plate in the plane parallel to the XOZ plane is in a horizontal herringbone shape;
comprises a transverse light guide part and a pair of inclined light guide parts which are respectively inclined upwards and downwards and are connected with the transverse light guide part; the rear side of the transverse light guide part is an incidence plane (1);
the inclined light guide part comprises a section of bending part with curvature and a straight part connected with the bending part and extending; the front side of the bending part is provided with a first total reflection surface (2), the front side of the straight part is provided with a second total reflection surface (6), and the rear side of the straight part is provided with a third total reflection surface (7); the foremost end of the straight part is conical; the outer side of the forefront end of the straight part is provided with a first strip-shaped pattern surface (4), the inner side of the forefront end of the straight part is provided with a second strip-shaped pattern surface (5), one of the strip-shaped divisions of the first strip-shaped pattern surface (4) and the strip-shaped division of the second strip-shaped pattern surface (5) is vertical to the YOZ surface, and the other strip-shaped division of the first strip-shaped pattern surface is parallel to the YOZ surface;
the first total reflection surface (2) is matched with the first strip-shaped pattern surface (4) so that light rays are reflected and hit the second strip-shaped pattern surface (5) to form a high-lighting effect;
the second total reflection surface (6) and the third total reflection surface (7) form a low-lighting effect;
the butterfly-shaped light guide sheet is used for a car lamp;
the first total reflection surface (2) is parallel to a first strip-shaped pattern surface (4) on one side of the inclined light guide part where the first total reflection surface is positioned;
the first strip-shaped pattern surface (4) is divided into vertical strips perpendicular to the YOZ surface, and the second strip-shaped pattern surface (5) is divided into transverse strips parallel to the YOZ surface;
the light horizontal diffusion degree of the highlight effect area is controlled by adjusting the radian of the vertical rib patterns; the degree of diffusion in the vertical direction of the light high-lighting effect area is controlled by adjusting the radian of the transverse rib patterns; the light scattering and emitting characteristics of the dermatoglyph particles or the parts of the second total reflection surface and the third total reflection surface realize the lighting effect of uniform low brightness of the large luminous surface of the second total reflection surface (6), and the first strip-shaped pattern surface and the second strip-shaped pattern surface realize the lighting effect of uniform high brightness of the small luminous surface of the second strip-shaped pattern surface (5) under the controllable diffusion degree.
2. The butterfly light guide of claim 1, wherein: the transverse light guide part is a light guide inner part (0), and the thickness of the light guide inner part (0) is 3.5mm.
3. The butterfly light guide of claim 1, wherein: a plurality of light sources (8) are arranged along the Y direction in the transverse light guide part.
4. The butterfly light guide of claim 1, wherein: the transverse light guide part is provided with a prefabricated matched round strip-shaped light guide body (10) along the Y direction.
5. The butterfly light guide of claim 1, wherein: the first total reflection surface (2) has an inclination angle of 45 degrees and a width of 6mm.
6. The butterfly light guide of claim 1, wherein: the vertical rib patterns and the horizontal rib patterns are 1.5mm in width.
7. The butterfly light guide of claim 2, wherein: the butterfly-shaped light guide sheet internal material is a transparent PC material with higher light transmittance, and the second total reflection surface (6) and the third total reflection surface (7) are provided with dermatoglyph particles; alternatively, the butterfly-shaped light guide sheet internal material is PLEXIGLAS LED 8N LD12, LD24, LD48, LD96 transparent PMMA light curtain material produced by Evonik, and the material itself has the characteristic of scattered light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910016402.3A CN109539177B (en) | 2019-01-08 | 2019-01-08 | Butterfly-shaped light guide sheet and method for realizing large-area light emission of lamp signal lamp of vehicle lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910016402.3A CN109539177B (en) | 2019-01-08 | 2019-01-08 | Butterfly-shaped light guide sheet and method for realizing large-area light emission of lamp signal lamp of vehicle lamp |
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| Publication Number | Publication Date |
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| CN109539177A CN109539177A (en) | 2019-03-29 |
| CN109539177B true CN109539177B (en) | 2024-03-22 |
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| CN201910016402.3A Active CN109539177B (en) | 2019-01-08 | 2019-01-08 | Butterfly-shaped light guide sheet and method for realizing large-area light emission of lamp signal lamp of vehicle lamp |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111237686B (en) * | 2020-03-17 | 2024-06-14 | 宁波福尔达智能科技股份有限公司 | Knob structure for vehicle |
| EP4375568A1 (en) * | 2022-11-23 | 2024-05-29 | Hella Autotechnik Nova, s.r.o. | Illumination assembly for a vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013160604A (en) * | 2012-02-03 | 2013-08-19 | Yazaki Corp | Light guide plate |
| WO2016104111A1 (en) * | 2014-12-24 | 2016-06-30 | 株式会社小糸製作所 | Vehicular lighting tool |
| CN209116235U (en) * | 2019-01-08 | 2019-07-16 | 华域视觉科技(上海)有限公司 | A kind of butterfly-like light guide sheet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004047351A (en) * | 2002-07-15 | 2004-02-12 | Koito Mfg Co Ltd | Vehicular lighting fixture |
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2019
- 2019-01-08 CN CN201910016402.3A patent/CN109539177B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013160604A (en) * | 2012-02-03 | 2013-08-19 | Yazaki Corp | Light guide plate |
| WO2016104111A1 (en) * | 2014-12-24 | 2016-06-30 | 株式会社小糸製作所 | Vehicular lighting tool |
| CN209116235U (en) * | 2019-01-08 | 2019-07-16 | 华域视觉科技(上海)有限公司 | A kind of butterfly-like light guide sheet |
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