Light guide structure

Abstract

The utility model provides a light guide structure, which comprises a first light guide piece, a second light guide piece and an optical axis, and is characterized in that the first light guide piece comprises a first light incident part, a first crossed light guide tooth and a first light guide tooth which are connected in sequence; the second light guide piece comprises a second light incident part, a second crossed light guide tooth and a second light guide tooth which are connected in sequence; wherein the first cross light guide teeth and the second cross light guide teeth are arranged in an overlapped mode in the optical axis direction, and the first light guide teeth and the second light guide teeth form an annular body. The rectangular light guide teeth are overlapped front and back to emit light, so that the problem that a dark area is formed in the light-emitting effect of the intersection position when a light guide intersection scheme is adopted is solved, the length of a light mixing area is reduced to a certain extent, and the design space is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamps, in particular to a light guide structure. Background Art

[0002] In recent years, slender luminous effects have been favored by OEMs, and are more common in the design of through-lights and ambient lights.

[0003] In slender luminous shapes, the light guide solution has more cost advantages than other solutions. When the luminous area is long and there is insufficient space at both ends, it is often necessary to adopt a solution of multiple light guides crossing each other. However, this solution often results in dark luminous areas at the intersection of the light guides, seriously affecting the appearance and consistency of the entire product. Utility Model Content

[0004] In view of the above problems, the purpose of the present invention is to provide a light guide structure, which avoids the problem of dark areas formed by the light effect at the intersection of the light guides.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a light guide structure, including a first light guide member, a second light guide member and an optical axis, wherein the first light guide member includes a first light input portion, a first cross light guide tooth and a first light guide tooth connected in sequence; the second light guide member includes a second light input portion, a second cross light guide tooth and a second light guide tooth connected in sequence; wherein the first cross light guide tooth and the second cross light guide tooth are arranged to overlap in the direction of the optical axis, and the first light guide tooth and the second light guide tooth form an annular body.

[0007] Further preferably, the projections of the first cross light guide teeth and the second cross light guide teeth in the optical axis direction are arranged in parallel and at intervals.

[0008] Further preferably, the cross-sections of the first cross-light guide teeth and the second cross-light guide teeth in the optical axis direction are rectangular.

[0009] Further preferably, a size of the first cross light guide tooth close to the first light guide tooth is larger than a size of the first cross light guide tooth close to the first light incident portion.

[0010] Further preferably, a size of the second cross light guide tooth close to the second light guide tooth is larger than a size of the second cross light guide tooth close to the second light incident portion.

[0011] Further preferably, both the first light incident portion and the second light incident portion are provided with light mixing stripes.

[0012] Further preferably, the first light guide tooth end is provided with a first light shielding surface, the second light guide tooth end is provided with a second light shielding surface, and the first light shielding surface and the second light shielding surface are arranged opposite to each other.

[0013] Further preferably, the surfaces of the first light-shielding surface and the second light-shielding surface are both painted black.

[0014] Further preferably, the size of the first light-guide tooth gradually increases as it moves away from the first cross-light-guide tooth, and the size of the second light-guide tooth gradually increases as it moves away from the second cross-light-guide tooth.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model solves the problem of dark areas formed in the lighting effect at the intersection position when adopting the light guide crossing scheme by overlapping the front and back of rectangular light guide teeth, and reduces the length of the mixed light area to a certain extent, saving design space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of the light guide structure provided by the utility model;

[0019] Figure 2 A top view of the light guide structure provided by the utility model;

[0020] Figure 3 A right side view of the light guide structure provided by the present utility model;

[0021] Illustration: 1-first light incident portion, 2-second cross light guide tooth, 3-first cross light guide tooth, 4-second light incident portion, 5-first light guide tooth, 6-first light shielding surface, 7-second light shielding surface, 8-second light guide tooth, 9-optical axis.

[0022] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0023] To better understand the present invention, various aspects of the present invention will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrations of embodiments of the present invention and are not intended to limit the scope of the present invention in any way. Throughout this specification, like reference numerals refer to like elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0025] It should also be understood that the terms "comprises," "including," "having," "includes," and / or "comprising," when used in this specification, indicate the presence of the stated features, elements, and / or components, but do not preclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. In addition, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire list of features rather than modifying the individual elements in the list. In addition, when describing embodiments of the present invention, "may" is used to mean "one or more embodiments of the present invention." Furthermore, the term "exemplary" is intended to refer to an example or illustration.

[0026] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] like Figures 1 to 3As shown, a light guide structure includes a first light guide member, a second light guide member and an optical axis 9, wherein the first light guide member includes a first light input portion 1, a first cross light guide tooth 3 and a first light guide tooth 5 connected in sequence. The second light guide member includes a second light input portion 4, a second cross light guide tooth 2 and a second light guide tooth 8 connected in sequence. The light guide teeth on the first cross light guide tooth 3, the first light guide tooth 5, the second cross light guide tooth 2 and the second light guide tooth 8 are all arranged on the outer surface. It can be understood that the optical axis 9 is perpendicular to the inner side surfaces of the first cross light guide tooth 3 and the second cross light guide tooth 2. Among them, the first cross light guide tooth 3 and the second cross light guide tooth 2 are arranged to overlap in the direction of the optical axis 9, and the first light guide tooth 5 and the second light guide tooth 8 form an annular body, which can realize the lighting of the entire ring of the light guide. In the present utility model, each light guide tooth is located in the outer circle of the entire annular body, and the light emitting direction is in the opposite direction of the light guide tooth, so the light guide emits light as the inner circle. The overlapping arrangement of the first cross light guide tooth 3 and the second cross light guide tooth 2 in the direction of the optical axis 9 can compensate for the light

[0029] More specifically, the projections of the first and second cross-light-guide teeth 3 and 2 along the optical axis 9 are arranged parallel and spaced apart. It will be appreciated that the projections of the first and second cross-light-guide teeth 3 and 2 along the optical axis 9 are arranged parallel and spaced apart. The cross-sections of the first and second cross-light-guide teeth 3 and 2 along the optical axis 9 are rectangular, which reduces light energy loss and further resolves dark areas.

[0030] More specifically, the size of the first cross light guide tooth 3 near the first light guide tooth 5 is larger than the size of the first cross light guide tooth 3 near the first light entrance 1. The size of the second cross light guide tooth 2 near the second light guide tooth 8 is larger than the size of the second cross light guide tooth 2 near the second light entrance 4. It can be understood that the farther away from the light source (LED), the less light energy there is, so larger light guide teeth are needed to refract more light, so as to achieve the most consistent light guide lighting effect. It should be noted that the light guide tooth structure is formed by multiple separate tooth structures arranged in sequence. As the size of the light guide tooth increases, the size of the multiple separate tooth structures gradually increases.

[0031] Both the first light entrance 1 and the second light entrance 4 are provided with light-mixing stripes. These stripes ensure uniform light mixing and reduce the length of the light-mixing area, saving design space. It should be noted that light-mixing stripes increase the range of total reflection angles for light of different wavelengths. Their purpose is to completely mix light of different wavelengths emitted by the light source into a single color, improving imaging quality.

[0032] The first light guide tooth 5 is terminated with a first light shielding surface 6, while the second light guide tooth 8 is terminated with a second light shielding surface 7. These surfaces are positioned opposite each other, ensuring consistent light output from the first and second light guides. To reduce stray light, both surfaces are painted black.

[0033] The first light-guiding teeth 5 gradually increase in size as they move away from the first intersecting light-guiding teeth 3, while the second light-guiding teeth 8 gradually increase in size as they move away from the second intersecting light-guiding teeth 2. The farther away from the light source (LED), the less energy there is, so larger teeth are needed to refract more light, thereby achieving a consistent lighting effect from end to end.

[0034] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A light guide structure, characterized in that: The invention comprises a first light guide, a second light guide and an optical axis (9), wherein the first light guide comprises a first light input portion (1), a first cross light guide tooth (3) and a first light guide tooth (5) connected in sequence; the second light guide comprises a second light input portion (4), a second cross light guide tooth (2) and a second light guide tooth (8) connected in sequence; wherein the first cross light guide tooth (3) and the second cross light guide tooth (2) are arranged to overlap in the direction of the optical axis (9), and the first light guide tooth (5) and the second light guide tooth (8) form an annular body.

2. The light guide structure according to claim 1, wherein: The projections of the first cross light guide teeth (3) and the second cross light guide teeth (2) in the direction of the optical axis (9) are arranged in parallel and at intervals.

3. The light guide structure according to claim 1, wherein: The cross-sections of the first cross-light guide tooth (3) and the second cross-light guide tooth (2) in the direction of the optical axis (9) are rectangular.

4. The light guide structure according to claim 1, wherein: The size of the first cross light guide tooth (3) close to the first light guide tooth (5) is larger than the size of the first cross light guide tooth (3) close to the first light entrance portion (1).

5. The light guide structure according to claim 1, wherein: The size of the second cross light guide tooth (2) close to the second light guide tooth (8) is larger than the size of the second cross light guide tooth (2) close to the second light entrance portion (4).

6. The light guide structure according to claim 1, characterized in that: The first light incident portion (1) and the second light incident portion (4) are both provided with light mixing stripes.

7. The light guide structure according to claim 1, characterized in that: A first light-shielding surface (6) is provided at the end of the first light-guiding tooth (5), and a second light-shielding surface (7) is provided at the end of the second light-guiding tooth (8); the first light-shielding surface (6) and the second light-shielding surface (7) are arranged opposite to each other.

8. The light guide structure according to claim 7, characterized in that: The surfaces of the first light-shielding surface (6) and the second light-shielding surface (7) are both painted black.

9. The light guide structure according to claim 1, characterized in that: The size of the first light-guide tooth (5) gradually increases as it moves away from the first cross light-guide tooth (3), and the size of the second light-guide tooth (8) gradually increases as it moves away from the second cross light-guide tooth (2).

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