CN107228325B - Automobile lamp with diffraction lighting effect - Google Patents
Automobile lamp with diffraction lighting effect Download PDFInfo
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- CN107228325B CN107228325B CN201710543437.3A CN201710543437A CN107228325B CN 107228325 B CN107228325 B CN 107228325B CN 201710543437 A CN201710543437 A CN 201710543437A CN 107228325 B CN107228325 B CN 107228325B
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- light
- lens
- inner lens
- lamp
- lighting effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The invention provides an automobile lamp with diffraction-shaped lighting effect, which comprises a brake lamp cavity and a tail lamp cavity, wherein a light screen is arranged between the brake lamp cavity and the tail lamp cavity, the rear side surface of the brake lamp cavity is a first inner light distribution lens, the rear side surface of the tail lamp cavity is a second inner light distribution lens, an LED light source is arranged in the tail lamp cavity, the LED light source faces the second inner light distribution lens, a gap is formed between the light screen and the second inner light distribution lens to form a light channel, and the inner side of the first inner light distribution lens and/or the second inner light distribution lens is provided with a light guide boss; the first inner lens is provided with a plurality of light-emitting bars. The invention is provided with the light guide boss, and part of light emitted by the LED light source enters the light guide boss after being reflected by the second inner light distribution mirror and then enters the first inner light distribution mirror after being refracted by the light guide boss, so that more light is totally reflected in the first inner light distribution mirror and refracted out through the light emergent strips, thereby realizing the diffraction-shaped lighting effect, not only reducing the early development cost, but also avoiding the scrapping of the lamp in the later period due to the total reflection.
Description
Technical Field
The present invention relates to the field of automobile lamps, and particularly to an automobile lamp with a diffractive lighting effect.
Background
For the automobile lamp, the designed lamp is required to meet the requirements of regulations strictly, and also has beautiful and elegant appearance, and further has the effect of lighting and beautiful. In the current design of the car lamp, a function is generally required to correspond to only one light-emitting form, and the phenomenon that the edge is lightened when the lens is lighted due to light fleeing and total reflection among all functional areas is avoided as much as possible, which is also a difficult point of structural design and optical design.
The Chinese invention patent with the application number of 201410429894.6 provides an automobile tail lamp with an infinite circular reflection 3D effect, which comprises an LED light source, wherein a PCB (printed circuit board) is arranged at the rear side of the LED light source, the LED light source is arranged on the PCB, a light guide lens is arranged at the front side of the LED light source, a light shielding plate is arranged in the middle area of the light guide lens at the front side of the light guide lens, and the light shielding plate shields the middle area of the light guide lens and only leaves annular area transmission light; a reflector is arranged on the front side of the shading plate; the utility model discloses a LED light source, including light guide lens, curb plate, reflector, PCB board, light screen, reflector and semi-transparent semi-reflective lens, light guide lens left side is provided with the curb plate, the length of curb plate is longer than light guide lens and the thickness that the light screen adds the reflector, curb plate bottom right side is located the front side of reflector and is provided with semi-transparent semi-reflective lens, through using ordinary LED light source, the PCB board, the light screen, reflector plus semi-transparent semi-reflective lens combines to form, through the ingenious cooperation to between semi-transparent semi-reflective lens and the reflector, make an ordinary light guide lens realize the effect that many light guides are. However, most of light beams are still wasted in the automobile tail lamp, and due to the total reflection phenomenon of light, when the light distribution lens is lighted, part of light moves from a tail lamp area to a stop lamp area, the edge of the stop lamp area is lightened, and the lighting effect of the automobile lamp is poor.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an automotive lamp with a diffractive lighting effect to increase the utilization rate of light, so as to overcome the above-mentioned defects of the prior art.
In order to achieve the purpose, the invention provides an automobile lamp with a diffraction-shaped lighting effect, which comprises a brake lamp cavity and a tail lamp cavity, wherein a light screen is arranged between the brake lamp cavity and the tail lamp cavity, the rear side surface of the brake lamp cavity is a first inner light distribution lens, the rear side surface of the tail lamp cavity is a second inner light distribution lens, an LED light source is arranged in the tail lamp cavity, the LED light source faces the second inner light distribution lens, a distance is arranged between the light screen and the second inner light distribution lens to form a light channel, and a light guide boss is arranged on the inner side of the first inner light distribution lens and/or the second inner light distribution lens; the first inner lens is provided with a plurality of light-emitting bars.
Preferably, the inner side of the first inner lens is provided with a plurality of elongated grooves, and each groove forms a corresponding light emitting bar.
Preferably, the plurality of light-emitting bars intersect to form a grid.
Preferably, the first inner lens and/or the second inner lens are made of PC.
Preferably, the light guide boss is made of PC.
Preferably, the light guide boss is located within the light channel.
As described above, the automotive lamp having the diffractive lighting effect according to the present invention has the following advantageous effects: the invention has novel design and low cost, the inner sides of the first inner light distribution lens and/or the second inner light distribution lens are provided with the light guide bosses, part of light emitted by the LED light source enters the light guide bosses after being reflected by the second inner light distribution lens and enters the first inner light distribution lens after being refracted by the light guide bosses, so that more light is totally reflected in the first inner light distribution lens and refracted out through the light emergent strips, thereby realizing the diffraction-shaped lighting effect, providing technical guidance for the diversification of the car lamp shape, reducing the early development cost and avoiding the rejection of the lamp at the later stage due to the total reflection.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a point a in fig. 1.
Description of the element reference numerals
1 brake light chamber
11 first inner lens
12 light-emitting strip
13 brake lamp light source
2 taillight chamber
21 second inner lens
211 bottom surface
22 LED light source
23 light guide boss
24 circuit board
3 light shading plate
4 optical channel
5 external lens
6 decorating strip
7 steering indicating light
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship may be made without substantial technical changes.
When light propagates to the interface of two media, reflection and refraction phenomena generally occur at the same time, the total reflection phenomenon is a special phenomenon of light refraction, and the phenomenon that light rays do not refract any more and all return to the original medium to propagate is called the total reflection phenomenon only when the light is emitted from an optically dense medium to an optically sparse medium and the incident angle is larger than or equal to a critical angle.
When a light ray is incident into air or vacuum from a medium with a refractive index n, when the refraction angle of the light ray is 90 °, the incident angle C is the critical angle when the medium is totally reflected, and can be obtained according to the law of refraction:
as shown in fig. 1 to 2, the present invention provides an automotive lamp having a diffractive lighting effect, which is realized mainly by using a total reflection phenomenon of light rays in a lens. The automobile lamp with diffraction-shaped lighting effect comprises a stop lamp chamber 1 and a tail lamp chamber 2, wherein a light shielding plate 3 is arranged between the stop lamp chamber 1 and the tail lamp chamber 2, so that the stop lamp chamber 1 and the tail lamp chamber 2 can be prevented from mutually crossing. The rear side surface of the brake lamp cavity 1 is provided with a first inner lens 11, a brake lamp light source 13 is arranged in the brake lamp cavity 1, the brake lamp light source 13 faces the first inner lens 11, and when braking is performed, the brake lamp light source 13 emits light rays which are emitted from the first inner lens 11; the rear side surface of the tail lamp cavity 2 is provided with a second inner lens 21, an LED light source 22 is arranged in the tail lamp cavity 2, the LED light source 22 is installed on a circuit board 24, the LED light source 22 faces the second inner lens 21, when the tail lamp is turned on, part of light emitted by the LED light source 22 is emitted from the second inner lens 21, and the first inner lens 11 and the second inner lens 21 are arranged in an angle.
As shown in fig. 1 to fig. 2, a gap is formed between the light shielding plate 3 and the second inner lens 21 to form a light channel 4, a part of light emitted by the LED light source 22 is reflected by a bottom surface 211 of the second inner lens 21 to enter the light channel 4, and then enters the first inner lens 21 after passing through the light channel 4, and the bottom surface 211 is generally an inclined surface, so as to control a reflection path of the light. The inner side of the first inner lens 11 and/or the second inner lens 21 is provided with a light guide boss 23, the light guide boss 23 is usually arranged in the light channel 4, light is reflected by the bottom surface 211 of the second inner lens 21 to enter the light guide boss 23, and is refracted by the light guide boss 23 to enter the first inner lens 11, the light guide boss 23 can be integrally cast with the second inner lens 21, and the height and shape of the light guide boss 23 are adjusted to meet the refraction angle when most of the light exits the light guide boss 23, so that the light enters the first inner lens 11 to be totally reflected, and can not be directly refracted by the first inner lens 11. The first inner light distribution lens 11 is provided with a plurality of light emitting strips 12, the inner side of the first inner light distribution lens 21 is provided with a plurality of strip-shaped grooves, each groove forms a corresponding light emitting strip 12, light is totally reflected in the first inner light distribution lens 21, when reaching the side edge of each groove, the total reflection condition of the light is broken due to the change of an incident angle, and the light is refracted out of the grooves, so that the diffraction-shaped lighting effect is realized, the light emitting strips 12 are transverse strip patterns, common transverse strip patterns are generally cylindrical patterns in section, the effect of changing the light path is not greatly influenced by rhombic patterns with grid-shaped sections, the lighting effect with the rhombic patterns in section is not limited, people are dazzled, and the diamond patterns with grid-shaped sections are selected as the best pattern.
The automobile lamp with the diffractive lighting effect further comprises an outer light distribution mirror 5, the outer light distribution mirror 5 is generally made of PMMA, the PMMA is polymethyl methacrylate (PMMA for short), also called as Acrylic or organic glass, and is often called as ALI glue in hong Kong, the PMMA has the advantages of high transparency, low price, easy machining and the like, the PMMA is a glass substitute material which is usually used, the refractive index of the PMMA is generally between 1.482 and 1.52, and the critical angle of the total reflection of the PMMA is generally between 41 and 42 degrees according to the total reflection. The PC is polycarbonate, commonly called bulletproof glass cement, and is the best impact resistance in plastic, the refractive index of the PC is generally about 1.58, but when the tail lamp is lighted, the whole functional area is generally required to emit light uniformly, so a discrete material, which is usually milky PC, is generally adopted, but the brake lamp generally adopts transparent PC due to the fact that the regulation requires strong light intensity, and the discrete material is difficult to generate total reflection, so the materials of the first inner lens 11, the second inner lens 21 and the light guide boss 23 are transparent PC, and the double surfaces of the first inner lens 11 and the second inner lens 21 can be provided with leather grains to replace the discrete material in the tail lamp area.
The working principle of the invention is as follows:
the brake lamp and the tail lamp work independently, when the vehicle is braked, the light source 13 of the brake lamp is lightened, light rays are emitted from the first inner lens 11, and the brightness of the light rays is far greater than that of the lightened tail lamp. When the tail lamp works, the LED light source is turned on, a part of light rays are emitted through the second inner lens 21, another part of light rays (see the reference number M in fig. 2 as a light ray path) are reflected through the bottom surface 211 of the second inner lens 21 to enter the light guide boss 23, the light rays refracted from the light guide boss 23 enter the first inner lens 11, the light rays are totally reflected in the first inner lens 11, the reflected light rays are refracted when passing through the light exit strip 12, and at this time, the light exit strip 12 of the first inner lens 11 and the second inner lens 21 are simultaneously turned on, and a diffraction-shaped lighting effect occurs.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. An automobile lamp with diffraction-shaped lighting effect comprises a brake lamp chamber (1) and a tail lamp chamber (2), wherein a light screen (3) is arranged between the brake lamp chamber (1) and the tail lamp chamber (2), the rear side surface of the brake lamp chamber (1) is a first inner lens (11), the rear side surface of the tail lamp chamber (2) is a second inner lens (21), an LED light source (22) is arranged in the tail lamp chamber (2), and the LED light source (22) faces the second inner lens (21), and the automobile lamp is characterized in that a space is arranged between the light screen (3) and the second inner lens (21) to form a light channel (4), and a light guide boss (23) is arranged on the inner side of the first inner lens (11) and/or the second inner lens (21); the first inner lens (11) is provided with a plurality of light-emitting bars (12).
2. The automotive lamp having a diffractive lighting effect according to claim 1, characterized in that: the inner side of the first inner lens (21) is provided with a plurality of strip-shaped grooves, and each groove forms a corresponding light emitting strip (12).
3. The automotive lamp having a diffractive lighting effect according to claim 2, characterized in that: the light-emitting bars (12) are intersected to form a grid shape.
4. The automotive lamp having a diffractive lighting effect according to claim 1, characterized in that: the first inner lens (11) and/or the second inner lens (21) are made of PC.
5. The automotive lamp having a diffractive lighting effect according to claim 1, characterized in that: the light guide boss (23) is made of PC.
6. The automotive lamp having a diffractive lighting effect according to claim 1, characterized in that: the light guide boss (23) is located in the light channel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543437.3A CN107228325B (en) | 2017-07-05 | 2017-07-05 | Automobile lamp with diffraction lighting effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710543437.3A CN107228325B (en) | 2017-07-05 | 2017-07-05 | Automobile lamp with diffraction lighting effect |
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| Publication Number | Publication Date |
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| CN107228325A CN107228325A (en) | 2017-10-03 |
| CN107228325B true CN107228325B (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710543437.3A Active CN107228325B (en) | 2017-07-05 | 2017-07-05 | Automobile lamp with diffraction lighting effect |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695854A (en) * | 2017-10-20 | 2019-04-30 | 法雷奥照明湖北技术中心有限公司 | Light source assembly, lighting device and motor vehicles |
| CN107842823A (en) * | 2017-10-20 | 2018-03-27 | 吉林小糸东光车灯有限公司 | A kind of new starry sky formula automobile using signal lamp device and control method |
| CN109827145A (en) * | 2018-07-10 | 2019-05-31 | 华域视觉科技(上海)有限公司 | A kind of rear combination signal lamp and its anti-channeling photo structure of anti-channeling light |
| CN109519871B (en) * | 2018-12-28 | 2023-11-17 | 浙江嘉利（丽水）工业股份有限公司 | Automobile signal lamp with three-dimensional luminous effect |
| CN110360519A (en) * | 2019-08-13 | 2019-10-22 | 华域视觉科技(上海)有限公司 | A kind of optronics system and car light |
| CN111637418A (en) * | 2020-05-19 | 2020-09-08 | 北京汽车股份有限公司 | Car lamp module, car lamp and vehicle |
| CN112032668A (en) * | 2020-09-18 | 2020-12-04 | 浙江吉利控股集团有限公司 | Car lamp system of vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625097A (en) * | 2008-07-10 | 2010-01-13 | 株式会社小糸制作所 | Lamp |
| CN103867983A (en) * | 2012-12-12 | 2014-06-18 | F·波尔希名誉工学博士公司 | Motor vehicle tail lamp |
| JP2015156340A (en) * | 2014-02-21 | 2015-08-27 | 株式会社小糸製作所 | vehicle lamp |
| CN102854560B (en) * | 2011-06-29 | 2016-08-31 | 法雷奥照明公司 | There is the light guide therefor of decoupled part and collect the cover of decoupled light |
| CN207006042U (en) * | 2017-07-05 | 2018-02-13 | 上海小糸车灯有限公司 | Auto lamp with diffraction shape lighting effect |
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2017
- 2017-07-05 CN CN201710543437.3A patent/CN107228325B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101625097A (en) * | 2008-07-10 | 2010-01-13 | 株式会社小糸制作所 | Lamp |
| CN102854560B (en) * | 2011-06-29 | 2016-08-31 | 法雷奥照明公司 | There is the light guide therefor of decoupled part and collect the cover of decoupled light |
| CN103867983A (en) * | 2012-12-12 | 2014-06-18 | F·波尔希名誉工学博士公司 | Motor vehicle tail lamp |
| JP2015156340A (en) * | 2014-02-21 | 2015-08-27 | 株式会社小糸製作所 | vehicle lamp |
| CN207006042U (en) * | 2017-07-05 | 2018-02-13 | 上海小糸车灯有限公司 | Auto lamp with diffraction shape lighting effect |
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Address after: 201800 No. 767, Yecheng Road, Shanghai, Jiading District Patentee after: HUAYU VISION TECHNOLOGY (SHANGHAI) Co.,Ltd. Address before: 201800 Yecheng Road, Jiading District, Jiading District, Jiading District, Shanghai Patentee before: SHANGHAI KOITO AUTOMOTIVE LAMP Co.,Ltd. |
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