CN216924250U - Space-saving light guide optical system capable of realizing uniform lighting and automobile signal lamp thereof - Google Patents

Abstract

The utility model provides a light guide optical system for saving space and realizing uniform lighting in the technical field of vehicle lamps and an automobile signal lamp thereof, wherein the light guide optical system comprises a light source, a light source and a light guide, wherein the light source is correspondingly arranged at the end part of a light guide body; the upper part of the optical conductor is correspondingly provided with an inner lens, and the lower part of the optical conductor is correspondingly provided with an optical guide bracket; the light guide body comprises a light guide total reflection optical tooth and a light guide modeling total reflection surface, the light guide total reflection optical tooth is arranged on the light guide body, and the light guide total reflection optical tooth is arranged corresponding to the light inlet surface of the inner lens; and a first diffusion optical pattern is arranged on the light guide support and corresponds to the light guide modeling total reflection surface. The utility model solves the problem that the light conductor is too close to the inner lens and the lighting effect is not uniform, achieves the effect of increasing the light mixing distance of light in a small space, and simultaneously adds the diffusion effect to realize the uniform lighting effect.

Description

Space-saving light guide optical system capable of realizing uniform lighting and automobile signal lamp thereof

Technical Field

The utility model relates to the technical field of vehicle lamps, in particular to a light guide optical system capable of saving space and achieving uniform lighting and a vehicle signal lamp thereof.

Background

The lamps and lanterns units such as indicator, tail lamp of car have multiple mode of lighting, compare in traditional reflector type car light, use the light guide technique can promote the homogeneity that light distributes, reduce dark space phenomenon. In the prior art, light guide teeth on the back of the light guide are used for reflecting light to the light guide modeling total reflection surface and then emitting the light, the system and the light guide structure have no diffusion function, although a light guide support is also arranged, the light guide support mainly has the functions of fixing and installing the light guide, and has no optical diffusion patterns and no optical diffusion function.

In the optical system of the light guide and the inner lens in the prior art, light guide teeth are arranged on the back of the light guide, light guide emergent rays are emergent towards the front of a car lamp and then irradiate on the inner lens, the light guide is required to have a larger light mixing distance from the inner lens, namely, a larger distance is required between a light emergent surface of the light guide and a light incident surface of the inner lens, and a more uniform lighting effect can be realized. And the light guide adds interior lens system, if the light guide is installed in the positive direction, the effective optical path of light guide to interior lens is shorter because of the space restriction, and homogeneity and bright spot problem are more difficult to solve, and prior art can use emulsification material through interior lens material, or interior lens carries out the dermatoglyph and handles improvement homogeneity, but this can bring cost and light efficiency reduction problem.

The search of the prior art finds that the Chinese utility model with the patent publication number of CN207729513U discloses a light guide mounting structure capable of avoiding the visual defect of a light guide head, which comprises a light guide bracket, a light guide and a light source; the light guide support is provided with a light guide mounting groove, one end of the light guide mounting groove is provided with a light reflecting inclined surface with the bottom inwards contracting, the light reflecting inclined surface is provided with a light guide through hole, one end of the light guide extends out of the light guide mounting groove through the light guide through hole, and the light guide part is fixed in the light guide mounting groove; the light source is fixed on the outer side of one end part of the light guide extending out of the light guide mounting groove. The patented technology suffers from the problems associated with it as described above.

Found through prior art retrieval, chinese utility model patent publication No. CN106287478A discloses a light guide assembly, and this light guide assembly includes light guide and light guide support, and light guide detachably installs on the light guide support, and the light guide includes: first installation end, second installation end and the light guide body that extends between first installation end and second installation end, and, the light guide support is close to first installation end department, is equipped with the draw-in groove, and the draw-in groove forms an accommodation space. The patented technology suffers from the problems associated with it as described above.

SUMMERY OF THE UTILITY MODEL

In view of the defects in the prior art, the present invention aims to provide a light guide optical system and an automotive signal lamp thereof, which can save space and realize uniform lighting.

The light guide optical system for saving space and realizing uniform lighting comprises a light source, a light source and a light guide, wherein the light source is correspondingly arranged at the end part of a light guide body;

the upper part of the optical conductor is correspondingly provided with an inner lens, and the lower part of the optical conductor is correspondingly provided with an optical guide bracket;

the light guide body comprises a light guide total reflection optical tooth and a light guide modeling total reflection surface, the light guide total reflection optical tooth is arranged on the light guide body, and the light guide total reflection optical tooth is arranged corresponding to the light inlet surface of the inner lens;

and a first diffusion optical pattern is arranged on the light guide support and corresponds to the light guide modeling total reflection surface.

In some embodiments, the pattern opening direction of the first diffusing optical pattern and the pattern opening direction of the light-guide total reflection optical tooth are arranged in parallel to each other.

In some embodiments, the pattern opening direction of the first diffusing optical pattern and the pattern opening direction of the light-guide total reflection optical tooth are perpendicular to each other.

In some embodiments, the end of the light conductor is provided with a diffusing sphere, and the diffusing sphere is arranged at the end of the light conductor not provided with the light source.

In some embodiments, a second diffusing optical pattern is disposed on the total reflection surface of the light guide structure, the second diffusing optical pattern is disposed on a side close to the light source, and the second diffusing optical pattern is disposed corresponding to the first diffusing optical pattern.

In some embodiments, the pattern opening direction of the second diffusing optical pattern and the pattern opening direction of the light-guide total reflection optical tooth are perpendicular to each other.

In some embodiments, the first diffusive optical pattern is disposed with a light guide tooth structure.

In some embodiments, the light source is fixedly disposed on a circuit board, the circuit board is disposed by using a PCB, and the surface of the light guide bracket is disposed by using a white diffuse reflection material or an aluminum-plated material.

In some embodiments, the light emitted from the light source is totally reflected inside the light guide body, the light irradiated to the light guide total reflection optical tooth is refracted to the light guide modeling total reflection surface, the light is emitted from the light guide modeling total reflection surface and then irradiated to the surface of the light guide support, the light irradiated to the light guide support provided with the first diffusion optical pattern is reflected and then irradiated to the light guide modeling total reflection surface, the light passes through the light guide modeling total reflection surface, and is irradiated to the inside of the light guide body for further reflection and refraction or directly passes through the light guide total reflection optical tooth, the light is irradiated to the inner lens, and the light passes through the inner lens and is irradiated after being diffused.

The utility model also provides an automobile signal lamp, and a light guide optical system for realizing uniform lighting by adopting the space-saving mode.

Compared with the prior art, the utility model has the following beneficial effects:

1. the light conductor and the light guide support are arranged and matched, the light guide support is used for increasing the distance by reflection, and various diffusion patterns are matched, so that uniform lighting is realized in a small space, the light guide teeth are arranged on one side, close to the inner lens, of the light conductor, namely, the emergent light of the light conductor is emergent towards the back of the car lamp from the whole lamp angle, the emergent light is reflected on the aluminized light guide support, and the reflected light is irradiated on the inner lens through the light guide, so that the effect of increasing the light mixing distance in the small space is achieved, and the diffusion effect is added, so that the uniform lighting effect is realized;

2. the second diffusion optical pattern is arranged on the light guide modeling total reflection surface, so that emergent light rays are diffused in the vertical direction, the lighting area can be enlarged, the bright spots can be eliminated, and the lighting uniformity is better.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a first schematic diagram of a light guide optical system for saving space and achieving uniform illumination according to the present invention;

FIG. 2 is a second schematic structural diagram of a light guide optical system for saving space and achieving uniform illumination according to the present invention;

FIG. 3 is a schematic bottom view of the light guide optical system for saving space and achieving uniform illumination according to the present invention;

FIG. 4 is a schematic top view of a light guide optical system for achieving uniform illumination in a space saving manner according to the present invention;

FIG. 5 is a first enlarged view of a portion of the light guide optical system of the present invention showing space savings for uniform illumination;

FIG. 6 is a second enlarged view of a portion of the light guide optical system of the present invention showing space savings for uniform illumination;

FIG. 7 is a first schematic diagram of the optical path of the light guide optical system for saving space and achieving uniform illumination according to the present invention;

FIG. 8 is a second schematic optical path diagram of the light guide optical system for saving space and achieving uniform illumination according to the present invention;

FIG. 9 is a first schematic view of the structure of a light guide body according to the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 9 in accordance with the present invention;

FIG. 11 is a second schematic structural view of a photoconductor according to the present invention;

FIG. 12 is a schematic bottom view of the light guide of the present invention;

FIG. 13 is a schematic top view of a light guide of the present invention;

FIG. 14 is a schematic view of a light guide holder according to the present invention;

FIG. 15 is a schematic top view of a light guide holder according to the present invention;

FIG. 16 is a schematic diagram of the optical path of a conventional system of the prior art;

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Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the utility model. All falling within the scope of the present invention.

Example 1:

fig. 1 is a schematic structural diagram of a first light guide optical system for saving space and achieving uniform lighting, fig. 2 is a schematic structural diagram of a second light guide optical system for saving space and achieving uniform lighting, fig. 3 is a schematic structural diagram of a bottom view of a light guide optical system for saving space and achieving uniform lighting, fig. 4 is a schematic top view of a light guide optical system for saving space and achieving uniform lighting, fig. 5 is a first partially enlarged view of a light guide optical system for saving space and achieving uniform lighting, and fig. 6 is a second partially enlarged view of a light guide optical system for saving space and achieving uniform lighting, including a light source 1, the light source 1 is fixedly disposed on a circuit board 8, and in this embodiment, the circuit board 8 is disposed by using a PCB. The light source 1 is correspondingly arranged at the end part of the optical conductor 10, the inner lens 5 is correspondingly arranged above the optical conductor 10, and the optical guide bracket 4 is correspondingly arranged below the optical conductor 10. In this embodiment, the inner lens 5 may be a transparent plastic material with frosted leather patterns on both sides, or may be an emulsified smooth plastic material.

Fig. 9 is a schematic structural diagram of a light guide 10, fig. 10 is a partially enlarged view of fig. 9, fig. 11 is a schematic structural diagram of a light guide 10, fig. 12 is a schematic bottom view of the light guide 10, fig. 13 is a schematic top view of the light guide 10, the light guide 10 includes a light guide total reflection optical tooth 2 and a light guide modeling total reflection surface 3, the light guide total reflection optical tooth 2 is disposed on the light guide 10, and the light guide total reflection optical tooth 2 is disposed corresponding to the light incident surface of the inner lens 5, and the light guide total reflection optical tooth 2 can change the angle of the light while the light is totally reflected, so that the light can be emitted from the light guide modeling total reflection surface 3 to the air.

Fig. 14 is a schematic structural diagram of the light guide holder 4, fig. 15 is a schematic plan view of the light guide holder 4, a first diffusing optical pattern 7 is arranged on the light guide holder 4, the first diffusing optical pattern 7 is arranged corresponding to the light guide modeling total reflection surface 3, the first diffusing optical pattern 7 enables light emitted from the light guide modeling total reflection surface 3 to pass through the transparent light guide 10 and irradiate the light to the inner lens after the light is incident on the surface of the light guide holder 4 and reflected, so as to increase the optical path between the exit surface of the light guide 10 and the inner lens 5, thereby increasing the light mixing distance of the light emitted from the light guide 10, enabling the light to have more space for light mixing, improving uniformity, and enabling the light to be diffused through the first diffusing optical pattern 7 of the light guide holder 4 during reflection, and further improving uniformity. In the present embodiment, the pattern opening direction of the first diffusing optical pattern 7 and the pattern opening direction of the light-guide total-reflection optical tooth 2 are arranged in parallel with each other, and as shown in fig. 13 and 15, it can be seen that the direction of the first diffusing optical pattern 7 is vertical and the light-guide total-reflection optical tooth 2 is vertical. The pattern width and curvature can be varied according to actual requirements.

The light guide modeling total reflection surface 3 is provided with a second diffusion optical pattern 9, the second diffusion optical pattern 9 is arranged on one side close to the light source 1, and the second diffusion optical pattern 9 is arranged corresponding to the first diffusion optical pattern 7. The pattern opening direction of the second diffusing optical pattern 9 may be designed according to the actual requirements of the project, and may be parallel to the longitudinal direction of the optical conductor 10, or perpendicular to the longitudinal direction of the optical conductor 10, or at an angle to the longitudinal direction of the optical conductor 10.

The surface of the light guide support 4 is made of white diffuse reflection material or aluminum-plated material, so that the light guide support 4 has reflection and diffusion functions. When the surface of the light guide support 4 adopts a white diffuse reflection material, the diffusivity is better. When the surface of the light guide support 4 is plated with aluminum, the reflectivity is better, the lighting effect can be improved under the condition of meeting the optical uniformity, and the regulation can be met more easily. The end part of the optical conductor 10 is provided with a diffusion spherical surface which is arranged at one end of the optical conductor 10 without the light source 1, so that emergent rays are diffused when being emergent, bright spots are weakened, and the overall lighting effect is more uniform.

Example 2:

in the present embodiment 2, the second diffusing optical pattern 9 and the light-guide total reflection optical tooth 2 are arranged in a pattern opening direction perpendicular to each other on the basis of the embodiment 1. The second diffusing optical pattern 9 can diffuse the emergent light in the vertical direction, thereby enlarging the lighting area, eliminating the bright spots and improving the lighting uniformity.

Example 3:

in example 3, the pattern opening direction of the first diffusing optical pattern 7 and the pattern opening direction of the light-guide total reflection optical tooth 2 were perpendicular to each other, and uniformity was improved, based on example 1.

The working principle is as follows: fig. 7 is a first schematic diagram of an optical path of a light guide optical system for saving space and achieving uniform lighting, and fig. 8 is a second schematic diagram of an optical path of a light guide optical system for saving space and achieving uniform lighting, in which a light guide total reflection optical tooth 2 is disposed on a side of the light guide body 10 away from an upper surface of the light guide bracket 4, and for this optical system, an effective optical path in an optical design is a distance between a light guide light-emitting surface and an inner lens light-entering surface, that is, a distance b1+ b2 in fig. 8. As shown in fig. 16, which is a schematic diagram of an optical path of a conventional system in the prior art, it is apparent from the comparative energy that a < b1+ b2, the optical path between the light guide exit surface and the inner lens 5 can be increased by the system scheme of this patent, and the optical path between the light guide exit surface and the inner lens 5 is increased, so that the light mixing distance of the light guide exit light is increased, the light has more space for light mixing, and the uniformity is improved.

The light emitted by the light source 1 is refracted from an air medium to enter a plastic medium of the transparent light guide body 10, the light emitted by the light source 1 is totally reflected inside the light guide body 10, and part of the light irradiates the light guide molding total reflection surface 3 to be totally reflected and continuously transmitted in the light guide; when part of light irradiates the light guide total reflection optical tooth 2, the light is totally reflected, the light is reflected to the light guide modeling total reflection surface 3 and then emitted to an air medium, and the light near the light inlet end of the light guide body 10 irradiates the second diffusion optical pattern 9 and then is emitted to the air medium from the second diffusion optical pattern 9; when part of the light irradiates the diffusion spherical surface, the light is emitted to the air medium.

When the light rays exit from the transparent light conductor 10 to the air medium through the second diffusion optical patterns 9 and the diffusion spherical surface, the light ray angles can be diffused, so that the exiting light rays can illuminate a larger area as much as possible and have better uniformity. The light emitted from the light guide 10 into the air impinges on the light guide holder 4, is reflected and diffused on the first diffusing optical pattern 7, and the reflected light passes through the transparent plastic medium of the light guide 10 and impinges on the inner lens 5. The light rays which are irradiated into the light conductor 10 and then reflected and refracted or directly pass through the light conductor total reflection optical tooth 2 irradiate the inner lens 5, and the light rays penetrate through the inner lens 5 and are diffused and then irradiate out. The light rays can reach a more uniform lighting effect after being emitted through the inner lens 5.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (10)

1. A light guide optical system which saves space and realizes uniform lighting comprises a light source (1), and is characterized in that the light source (1) is correspondingly arranged at the end part of a light conductor (10);

the upper part of the optical conductor (10) is correspondingly provided with an inner lens (5), and the lower part of the optical conductor (10) is correspondingly provided with an optical guide bracket (4);

the light guide body (10) comprises a light guide total reflection optical tooth (2) and a light guide modeling total reflection surface (3), the light guide total reflection optical tooth (2) is arranged on the light guide body (10), and the light guide total reflection optical tooth (2) is arranged corresponding to the light inlet surface of the inner lens (5);

the light guide support (4) is provided with a first diffusion optical pattern (7), and the first diffusion optical pattern (7) is arranged corresponding to the light guide modeling total reflection surface (3).

2. The space-saving light guide optical system for achieving uniform lighting according to claim 1, wherein a pattern opening direction of the first diffusing optical pattern (7) and a pattern opening direction of the light guide total reflection optical tooth (2) are arranged in parallel to each other.

3. The space-saving light guide optical system for achieving uniform lighting according to claim 1, wherein a pattern opening direction of the first diffusing optical pattern (7) and a pattern opening direction of the light guide total reflection optical tooth (2) are arranged perpendicular to each other.

4. The light guide optical system for achieving uniform lighting in a space-saving manner according to claim 1, wherein the end portion of the light guide body (10) is provided with a diffusing spherical surface, and the diffusing spherical surface is provided at an end of the light guide body (10) where the light source (1) is not provided.

5. The space-saving light guide optical system for achieving uniform lighting according to claim 1, characterized in that a second diffusing optical pattern (9) is provided on the light guide shaped total reflection surface (3), the second diffusing optical pattern (9) is provided on a side close to the light source (1), and the second diffusing optical pattern (9) is provided corresponding to the first diffusing optical pattern (7).

6. The space-saving light guide optical system for achieving uniform lighting according to claim 5, wherein a pattern opening direction of the second diffusing optical pattern (9) and a pattern opening direction of the light guide total reflection optical tooth (2) are arranged perpendicular to each other.

7. A space-saving light-guiding optical system for achieving uniform lighting according to claim 3, wherein said first diffusing optical pattern (7) is arranged with a light-guiding tooth structure.

8. The light guide optical system for saving space and realizing uniform lighting according to claim 1, wherein the light source (1) is fixedly arranged on a circuit board (8), the circuit board (8) is arranged by adopting a PCB (printed Circuit Board), and the surface of the light guide bracket (4) is arranged by adopting a white diffuse reflection material or an aluminum-plated material.

9. The space-saving light guide optical system for achieving uniform lighting according to claim 1, wherein the light emitted from the light source (1) is totally reflected inside the light guide body (10), the light irradiated to the light guide total reflection optical tooth (2) is refracted to the light guide modeling total reflection surface (3), the light is irradiated to the surface of the light guide bracket (4) after exiting from the light guide modeling total reflection surface (3), the light irradiated to the light guide bracket (4) provided with the first diffusion optical pattern (7) is reflected and then irradiated to the light guide modeling total reflection surface (3), the light passes through the light guide modeling total reflection surface (3), and the light is irradiated to the inside of the light guide body (10) for re-reflection, refraction or directly passes through the light guide modeling total reflection optical tooth (2), the light rays irradiate the inner lens (5) again, penetrate through the inner lens (5), are diffused and then irradiate out.

10. An automotive signal lamp characterized by employing a light guide optical system according to any one of claims 1 to 9 for achieving uniform lighting with a space saving.

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