Light guide structure with unique highlighting effect and vehicle lamp

Abstract

The utility model belongs to the technical field of light guide, specifically relates to the light guide structure and car light of unique lighting effect, wherein the light guide structure includes: light guide body, light guide body includes light emitting part, total reflection part and the light guide channel of extending between light emitting part and total reflection part, light emitting part and total reflection part are opposite and set, one end of light guide channel is equipped with the light inlet part or both ends are all equipped with the light inlet part, total reflection part includes a plurality of microstructure patterns, a plurality of microstructure patterns are sequentially arranged along the extension direction of light guide channel, and microstructure pattern is used for destroying the total reflection of light in light guide body, light emitting part includes a plurality of different sizes, and the light emitting pattern of random arrangement, every light emitting pattern has a plurality of optical surfaces, and optical surface is used for reflecting and refracting light, and after light enters the light guide channel through the light inlet part, the light is refracted from the light emitting pattern after multiple reflections of light emitting pattern and microstructure pattern. The utility model has the unique and beautiful lighting effect, and the effect that the inside and outside of the car can realize the interaction.

Description

Technical Field

[0001] This utility model relates to the field of light guide technology, and in particular to a light guide structure and vehicle light with a unique lighting effect. Background Technology

[0002] With the rapid development of the automotive industry and consumers' increasing demands for better headlight illumination, LEDs have been increasingly used in automotive lighting in recent years. To meet customer needs, headlight designs are no longer monotonous; headlight shapes are becoming more diverse, with a greater emphasis on aesthetically pleasing, stylish, and unique lighting effects, and headlights are gradually becoming more intelligent. Currently, the main design features of widely used headlight illumination methods are compliance with regulations and uniformity. However, existing headlight illumination methods suffer from monotony, resulting in a single, unattractive lighting effect and failing to facilitate interaction between the car / driver and pedestrians or other vehicles. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to solve the technical problem that the lighting effect is monotonous and cannot realize the interaction between the inside of the vehicle and the outside world in the existing technology, this utility model provides a light guide structure and vehicle light with a unique lighting effect, which is beautiful and unique and can realize the interaction between the inside of the vehicle and the outside world.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a light guide structure and vehicle lamp with a unique lighting effect, comprising: a light guide body, the light guide body including a light emitting part, a total reflection part, and a light guide channel extending between the light emitting part and the total reflection part, the light emitting part and the total reflection part being arranged opposite to each other, the total reflection part including a plurality of microstructure patterns, the plurality of microstructure patterns being arranged sequentially along the extension direction of the light guide channel, the microstructure patterns being used to break the total reflection of light in the light guide body, the light emitting part including a plurality of light emitting patterns of different sizes and randomly arranged, each light emitting pattern having multiple optical surfaces, the optical surfaces being used to reflect and refract light.

[0005] Furthermore, at least one side of the light guide channel is provided with a light-incident section.

[0006] Furthermore, multiple optical surfaces are formed by connecting multiple randomly cut planes at multiple cutting angles, and the connection of multiple optical surfaces forms diamond-shaped light-emitting patterns, star-shaped light-emitting patterns, polygonal light-emitting patterns, or heart-shaped light-emitting patterns.

[0007] Furthermore, all of the light-emitting patterns are either recessed in the direction of the total reflection portion, raised in the direction away from the total reflection portion, or a combination of both.

[0008] Furthermore, the microstructure pattern is toothed or spherical in shape.

[0009] Furthermore, the light guide body has an elongated structure, and the cross-sectional shape of the light guide body is approximately circular or rectangular.

[0010] Furthermore, the light guide structure also includes a light concentrator, which is disposed at the light entrance portion, and the light source is located at the light inlet of the light concentrator.

[0011] Furthermore, there are multiple light guide structures arranged side by side.

[0012] A vehicle headlight includes a light source and a light guide structure with a unique lighting effect as described in any of the above claims. The light source is disposed at a light-incident section. After the light emitted by the light source enters the light guide channel through the light-incident section, it is refracted out from the light-outceasing pattern after multiple reflections by the light-outceasing pattern and the microstructure pattern.

[0013] Furthermore, the light source includes one or more LEDs.

[0014] Compared with the prior art, the beneficial effects of this utility model are: The total reflection part of this utility model is composed of several tooth-shaped or spherical microstructure patterns, and the light-emitting part is composed of several light-emitting patterns of different sizes and random arrangements. Multiple optical surfaces are composed of multiple randomly cut planes connected together, so that the diffusion angles are not the same. The light can be randomly reflected, refracted or totally reflected to achieve a unique lighting effect that is beautiful and unique, as dazzling as the starry sky, and realizes the interaction between the inside of the vehicle and the outside world. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is the optical path diagram of the optical guide structure in Example 1; Figure 2 This is a front view of the optical guide structure in Example 2; Figure 3 This is a rear view of the optical guide structure in Example 2; Figure 4 This is a left view of the optical guide structure of Example 2; Figure 5 This is a top view of the optical guide structure in Example 2; Figure 6 This is a partial enlarged view of the light-emitting pattern in Example 2; Figure 7 This is the optical path diagram of the optical guide structure in Example 3.

[0017] In the figure: 1. Light guide body; 101. Light guide channel; 102. Light emitting part; 1021. Light emitting pattern; 1022. Optical surface; 103. Total reflection part; 1031. Microstructure pattern; 104. Light incident part; 2. Light source; 3. Concentrator. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Example 1 like Figure 1The diagram shows a preferred embodiment of the present invention. This embodiment features a unique lighting effect achieved through a light guide structure comprising: a light guide body 1 and a light source 2. The light guide body 1 includes a light-emitting portion 102, a total reflection portion 103, and a light guide channel 101 extending between the light-emitting portion 102 and the total reflection portion 103. The light-emitting portion 102 and the total reflection portion 103 are arranged opposite to each other, with the light-emitting portion 102 located below the total reflection portion 103 (it should be noted that in another embodiment not shown, the positions of the light-emitting portion 102 and the total reflection portion 103 can be interchanged, i.e., the light-emitting portion 102 is located above the total reflection portion 103). One end of the light guide channel 101 is provided with a light-incident portion 104. The emitting part 103 includes several microstructure patterns 1031, which are arranged sequentially along the extension direction of the light guide channel 101. The microstructure patterns 1031 are used to break the total internal reflection of light in the light guide body 1. The emitting part 102 includes several emitting patterns 1021 of different sizes and randomly arranged. Each emitting pattern 1021 has multiple optical surfaces 1022, which are used to reflect and refract light. The light source 2 is disposed at the light entrance part 104. After the light emitted by the light source 2 enters the light guide channel 101 through the light entrance part 104, it is refracted out from the emitting pattern 1021 after multiple reflections by the emitting pattern 1021 and the microstructure patterns 1031.

[0022] In this embodiment, the multiple optical surfaces 1022 are formed by connecting multiple cutting planes with random cutting angles.

[0023] Specifically, the optical surface 1022 can achieve the following principle of light reflection and refraction: This light guide structure uses transparent polymethyl methacrylate (PMMA) or polycarbonate (PC) as the substrate. The typical refractive index of this type of transparent substrate is about 1.5, while the typical refractive index of air is about 1.0. Therefore, when light propagates at the light-emitting pattern 1021 interface of the substrate, it belongs to the propagation scenario from an optically denser medium to an optically less dense medium. According to the basic laws of light propagation, light will be reflected when it hits the above interface. The occurrence of refraction depends on the relationship between the incident angle and the critical angle: when the incident angle is less than the critical angle, reflection and refraction occur simultaneously, and some refracted light rays are emitted from the light-emitting pattern 1021; when the incident angle is greater than the critical angle, total internal reflection will occur, at which point the refraction phenomenon completely disappears, and all the light rays are reflected back into the light guide structure.

[0024] The light-emitting pattern 1021 of this invention is composed of multiple randomly cut planes connected together. The polyhedral cut planes allow light to enter the interface from different angles. The different tilt angles of the optical planes 1022 result in different incident angles of light. Therefore, when light hits the light-emitting pattern 1021, it can be refracted and reflected. The refracted light is directly emitted from the light-emitting pattern 1021; the reflected light continues to propagate in the light guide channel and is directed towards the microstructure pattern 1031. After multiple reflections by the light-emitting pattern 1021 and the microstructure pattern 1031, it is finally refracted and emitted from the light-emitting pattern 1021.

[0025] In this embodiment, multiple optical surfaces 1022 are connected to form a diamond-shaped light-emitting pattern 1021. Specifically, depending on actual needs, multiple optical surfaces 1022 can also be connected to form a star-shaped light-emitting pattern, a polygonal light-emitting pattern, or a heart-shaped light-emitting pattern.

[0026] In this embodiment, all of the light-emitting patterns 1021 are protruding in the direction away from the total reflection portion 103. Specifically, depending on actual needs, all of the light-emitting patterns 1021 can be recessed in the direction of the total reflection portion 103 or a combination of both.

[0027] In this embodiment, the microstructure pattern 1031 is toothed. Specifically, the shape of the microstructure pattern 1031 can be designed as spherical or other shapes according to actual needs.

[0028] In a preferred embodiment, the light guide body 1 has an elongated structure, and the cross-sectional shape of the light guide body 1 is approximately circular or rectangular.

[0029] In this embodiment, the light guide structure also includes a light concentrator 3, which is disposed at the light entrance 104, and the light source 2 is located at the light inlet of the light concentrator 3.

[0030] In a preferred embodiment, the light source 2 includes one or more LEDs.

[0031] Example 2 like Figures 2 to 6 As shown, in this embodiment, when the illuminated area is relatively large, the number of light guide structures can be arranged in multiple ways according to the light-emitting area. Specifically, there are eight light guide structures, which are arranged side by side along the first direction. This embodiment saves more space compared to other traditional solutions (thick-walled components / reflectors). For details, please refer to... Figure 2 As shown, the first direction is from top to bottom.

[0032] Example 3 like Figure 7 As shown, in this embodiment, light-incident portions 104 are provided at both ends of the light guide channel 101.

[0033] Preferably, when the left and right space is limited, the light source 2 can be set on the top and / or bottom of the light guide body 1 as needed.

[0034] Example 4 The light guide structures of Embodiments 1 to 3 can be used in conjunction with other structures in the vehicle lamp, so a vehicle lamp can be provided that includes a light guide structure with a unique lighting effect as described in any of the above embodiments.

[0035] Compared with the prior art, the beneficial effects of this utility model are: The total reflection part 103 of this utility model is composed of several tooth-shaped or spherical microstructure patterns 1031, and the light-emitting part 102 is composed of several light-emitting patterns 1021 of different sizes and randomly arranged. Multiple optical surfaces 1022 are composed of multiple randomly cut planes connected together, so that the diffusion angles are not the same. Light can be randomly reflected, refracted or totally reflected to achieve a unique lighting effect, which is beautiful and unique, as dazzling as the starry sky, and realizes the interaction between the inside of the vehicle and the outside world.

[0036] The above description is based on the preferred embodiments of this utility model. Through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined by the scope of the claims.

Claims

1. A light guide structure with a unique lighting effect, characterized in that, include: A light guide body (1) includes a light emitting part (102), a total reflection part (103), and a light guide channel (101) extending between the light emitting part (102) and the total reflection part (103). The light emitting part (102) and the total reflection part (103) are arranged opposite to each other. The total reflection part (103) includes a plurality of microstructure patterns (1031). The plurality of microstructure patterns (1031) are arranged sequentially along the extension direction of the light guide channel (101). The microstructure patterns (1031) are used to break the total reflection of light in the light guide body (1). The light emitting part (102) includes a plurality of light emitting patterns (1021) of different sizes and randomly arranged. Each light emitting pattern (1021) has a plurality of optical surfaces (1022). The optical surfaces (1022) are used to reflect and refract light.

2. The light guide structure with the unique lighting effect as described in claim 1, characterized in that, At least one side of the light guide channel (101) is provided with a light entrance portion (104).

3. The light guide structure with the unique lighting effect as described in claim 1, characterized in that, Multiple optical surfaces (1022) are formed by connecting multiple randomly cut planes with multiple cutting angles. The multiple optical surfaces (1022) are connected to form diamond-shaped light-emitting patterns, star-shaped light-emitting patterns, polygonal light-emitting patterns or heart-shaped light-emitting patterns.

4. The light guide structure with the unique lighting effect as described in claim 1, characterized in that, All of the light-emitting patterns (1021) are recessed in the direction of the total reflection part (103), protruded in the direction away from the total reflection part (103), or a combination of both.

5. The light guide structure with the unique lighting effect as described in claim 1, characterized in that, The microstructure pattern (1031) is tooth-shaped or spherical.

6. The light guide structure with the unique lighting effect as described in claim 1, characterized in that, The light guide body (1) has a long strip structure, and the cross-sectional shape of the light guide body (1) is approximately circular or rectangular.

7. The light guide structure with the unique lighting effect as described in claim 2, characterized in that, The light guide structure also includes a light concentrator (3), which is disposed at the light input part (104).

8. The light guide structure with the unique lighting effect as described in claim 1, characterized in that, The number of optical guide structures is multiple, and the multiple optical guide structures are arranged side by side.

9. A vehicle light, characterized in that, Includes a light source (2) and a light guide structure with a unique lighting effect as described in any one of claims 1 to 8. The light source (2) is disposed at the light entrance part (104). The light emitted by the light source (2) enters the light guide channel (101) through the light entrance part (104) and is refracted out from the light entrance pattern (1021) after multiple reflections by the light exit pattern (1021) and the microstructure pattern (1031).

10. A vehicle light as described in claim 9, characterized in that, The light source (2) includes one or more LEDs.

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