Light guide, optical assembly and vehicle

Abstract

The utility model provides a light guide, an optical assembly and a vehicle, and relates to the technical field of vehicle lamp illumination. The light guide is provided with a light-in part and a light-out part, the light-in part is positioned at at least one end part of the light guide, and the light-out part is positioned on the side wall of the light guide; a plurality of light guide teeth are further arranged on the inner side wall of the light guide corresponding to the light emitting part, and the light guide teeth are arranged in the length direction of the light guide; the light-emitting part comprises a light-emitting surface and a plurality of scribed line parts convexly arranged on the light-emitting surface, and each scribed line part is provided with a convex curved surface arranged outwards and is made of a light-transmitting material; light enters the light guide from the light inlet part and is reflected to the light outlet part through the light guide teeth, part of the light is emitted and diffused through the scribing part, and the other part of the light is emitted through the light outlet surface. According to the light guide, light diffusion can be increased through the arrangement of the scribing parts, the range of the visual angle of the light guide is expanded, and the lighting effect and lighting uniformity are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamp lighting, and in particular to a light guide, an optical component and a vehicle. Background Art

[0002] With technological advancements and societal progress, people's demands for lighting and signaling equipment on motor vehicles are becoming increasingly demanding. To meet these functional demands, lighting and signaling equipment are becoming increasingly complex with increasing component counts. To meet these diverse design requirements, light guide technology has emerged.

[0003] Light guides can make vehicle lighting more uniform and aesthetically pleasing, not only reducing vehicle weight but also improving vehicle interior space utilization. However, existing light guides have a narrow viewing angle and low efficiency, limiting the illumination range and potentially failing to provide adequate illumination in complex road conditions. Utility Model Content

[0004] The purpose of the utility model is to provide a light guide, an optical component and a vehicle, which can increase the diffusion of light, expand the range of the light guide's viewing angle and improve the light efficiency and lighting uniformity through the arrangement of the engraved portion.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] In one aspect of the present invention, a light guide is provided, comprising a light input portion and a light output portion, wherein the light input portion is located at at least one end portion of the light guide, and the light output portion is located on a side wall of the light guide; a plurality of light guide teeth are further provided on an inner side wall of the light guide corresponding to the light output portion, and the plurality of light guide teeth are arranged along the length direction of the light guide; the light output portion comprises a light output surface and a plurality of inscribed line portions convexly provided on the light output surface, the inscribed line portions having an outwardly arranged convex curved surface and being made of a light-transmitting material; light enters the light guide from the light input portion, is reflected by the light guide teeth to the light output portion, part of the light is emitted through the inscribed line portions and diffuses, and another part of the light is emitted through the light output surface.

[0007] Optionally, the scored portion is semi-cylindrical or spherical.

[0008] Optionally, the plurality of engraved lines are arranged along the length direction of the light guide and are disposed corresponding to the light guide teeth.

[0009] Optionally, the inner side wall of the light guide is a total reflection surface.

[0010] Another aspect of the present invention provides an optical assembly including a circuit board, a light source and a light guide; the light guide includes at least one light source, which is disposed on the circuit board and corresponds to the light incident portion of the light guide.

[0011] Optionally, the optical component also includes a thick wall, which has a first light incident surface and a first light emitting surface, and the first light incident surface is arranged toward the light emitting portion of the light guide; the first light incident surface has a plurality of first patterns, and the light emitted from the light emitting portion of the light guide enters the thick wall through the first light incident surface of the thick wall, and is emitted from the first light emitting surface.

[0012] Optionally, the optical component also includes an inner mirror, which is arranged between the thick wall and the light guide; the inner mirror has a second light incident surface and a second light exit surface, and the second light incident surface is arranged toward the light exit portion of the light guide; the second light incident surface has a second pattern, and the light emitted from the light exit portion of the light guide enters the inner mirror through the second light incident surface of the inner mirror, and is emitted from the second light exit surface.

[0013] Optionally, the light source includes at least one, and the light incident portion of each light guide is correspondingly provided with at least one light source.

[0014] Optionally, when the light guide comprises a plurality of light guides, the plurality of light guides are arranged side by side and connected to each other.

[0015] Another aspect of the present invention provides a vehicle including an optical assembly.

[0016] The beneficial effects of the present invention include at least one of the following:

[0017] The present application provides a light guide having a light input portion and a light output portion, the light input portion being located at at least one end portion of the light guide, and the light output portion being located at a side wall of the light guide; a plurality of light guide teeth are further provided on the inner side wall of the light guide corresponding to the light output portion, and the plurality of light guide teeth are arranged along the length direction of the light guide; the light output portion includes a light output surface and a plurality of engraved portions convexly provided on the light output surface, the engraved portions having a convex curved surface arranged outward and being made of a light-transmitting material, the setting of the convex curved surface can make the emitted light diffuse in more directions, breaking the original relatively single light output direction, thereby increasing the viewing angle range of the light guide and allowing the light to cover a wider area; at the same time, the setting of the convex curved surface helps to utilize the light more efficiently, so that the light efficiency of the light guide is higher and the lighting effect is more uniform.

[0018] This application also provides an optical assembly comprising a circuit board, a light source, and a light guide. The light guide comprises at least one light source, which is disposed on the circuit board and corresponds to the light input portion of the light guide. The optical assembly, through the provision of the light guide, diffuses light emitted by the optical assembly over a wider range of angles, thereby significantly expanding the illumination range of the vehicle headlights while achieving a uniform lighting effect.

[0019] The present application also provides a vehicle including the aforementioned optical assembly. The arrangement of the optical assembly significantly expands the illumination range of the vehicle's headlights, while also providing uniform lighting and better illumination or indication effects. This provides the driver with a wider field of view during nighttime driving or in adverse weather conditions, helping to promptly alert pedestrians and vehicles, as well as detect obstacles, pedestrians, and other vehicles on the road, thereby improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is one of the structural schematic diagrams of the light guide provided in the embodiment of the utility model;

[0022] Figure 2 This is an enlarged view of the details at A;

[0023] Figure 3 The second structural diagram of the light guide provided by the embodiment of the utility model;

[0024] Figure 4 This is an enlarged view of the details at B;

[0025] Figure 5 A schematic diagram of the light path inside the light guide provided in an embodiment of the present utility model;

[0026] Figure 6 is the energy diagram of the existing light guide;

[0027] Figure 7 Energy diagram of the light guide provided in this application;

[0028] Figure 8 One of the structural schematic diagrams of the optical assembly provided in an embodiment of the present utility model;

[0029] Figure 9 This is an enlarged view of the details at C;

[0030] Figure 10 The second structural diagram of the optical assembly provided by the embodiment of the present utility model;

[0031] Figure 11 A schematic structural diagram of an endoscope for an optical assembly provided in an embodiment of the present utility model;

[0032] Figure 12A schematic diagram of the thick-wall structure of an optical component provided in an embodiment of the present utility model.

[0033] Icon: 100-light guide; 110-light guide tooth; 120-light input part; 130-light output part; 131-light output surface; 132-line part; 200-optical component; 210-circuit board; 220-light source; 230-thick wall; 231-first light input surface; 2311-first pattern; 232-first light output surface; 240-endoscopic lens; 241-second light input surface; 2411-second pattern; 242-second light output surface. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", not that the structure must be completely horizontal, but can be slightly tilted.

[0039] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0040] Please refer to Figure 1 and Figure 3 The present embodiment provides a light guide 100 having a light entrance portion 120 and a light exit portion 130. The light entrance portion 120 is located at at least one end portion of the light guide 100, and the light exit portion 130 is located on a side wall of the light guide 100. A plurality of light guide teeth 110 are further provided on the inner side wall of the light guide 100 corresponding to the light exit portion 130. The plurality of light guide teeth 110 are arranged along the length direction of the light guide 100. The light exit portion 130 includes a light exit surface 131 and a plurality of inscribed portions 132 protruding from the light exit surface 131. The inscribed portions 132 have outwardly convex curved surfaces and are made of a light-transmitting material. Light enters the light guide 100 from the light entrance portion 120 of the light guide 100, is reflected by the light guide teeth 110 to the light exit portion 130, and some of the light exits through the inscribed portions 132 and diffuses, while the other part of the light exits through the light exit surface 131.

[0041] For details, please refer to Figure 1 and Figure 3 At least one end of the light guide 100 provided in the present application has a light entrance portion 120, and light can enter the light guide 100 through the light entrance portion 120; one side wall of the light guide 100 is a light exit portion 130, such as Figure 2 As shown, a light guide tooth 110 is provided on the inner side wall of the light emitting portion 130 , and the light entering the light guide 100 can be reflected by the light guide tooth 110 to the light emitting portion 130 ; the light emitting portion 130 has a light emitting surface 131 , and the light can be emitted from the light emitting surface 131 .

[0042] In order to expand the diffusion range of the light emitted by the light guide 100 and improve the light efficiency of the light guide 100, as shown in FIG. Figure 4As shown, the light-emitting surface 131 of the light guide 100 is provided with a grooved portion 132. To diffuse the light emitted from the light-emitting portion 130, the grooved portion 132 has an outwardly convex surface and is made of a light-transmitting material. The convex surface diffuses the light in more directions, thereby increasing the viewing angle of the light guide 100 and allowing the light to cover a wider area. The convex surface also helps to more efficiently utilize the light, resulting in higher luminous efficiency and more uniform lighting effects for the light guide 100. Preferably, the grooved portion 132 is semi-cylindrical or spherical.

[0043] Please refer to Figure 6 and Figure 7 , Figure 6 An energy diagram of an existing light guide without the ruled portion 132 is provided. Figure 7 This is the energy diagram of the light guide 100 provided in this application. By comparing the two diagrams, we can clearly see how much energy different light guides output under the same input energy. Figure 6 and Figure 7 It can be seen that the light guide 100 provided in this application can transmit more energy from the light source 220 to the light emitting surface 131, thereby Figure 6 and Figure 7 The comparison shows a higher energy output value, which shows that the light efficiency of the light guide 100 provided by the present application is better than that of the existing light guide.

[0044] At the same time, since the light guide 100 with a larger viewing angle can provide sufficient lighting energy within a wider angle range, Figure 6 and Figure 7 The energy diagram can show the change of light guide output energy at different viewing angles. Figure 6 and Figure 7 By comparing the energy diagrams, it can be seen that the light guide 100 of the present application has a larger viewing angle than the existing light guide.

[0045] like Figure 5 As shown, after the light incident from the light incident portion 120 enters the light guide 100 , part of the light is reflected by the light guide teeth 110 and then emitted from the scribed portion 132 , while the other part of the light is reflected by the light guide teeth 110 and then emitted from the light emitting surface 131 .

[0046] It should be noted that, in one embodiment of the present application, first, a plurality of light guide teeth 110 are arranged on the inner side wall of the light guide 100 along the length direction of the light guide 100, in order to improve the utilization rate of light, such as Figure 4As shown, multiple scribed lines 132 are arranged along the length of the light guide 100 and corresponding to the light guide teeth 110, so that the light reflected by the light guide teeth 110 can be emitted more by the scribed lines 132. The present application does not impose any restrictions on the spacing between two adjacent light guide teeth 110 or the spacing between two adjacent scribed lines 132. The specific spacing value can be adjusted according to actual needs, and the scribed lines 132 and light guide teeth 110 do not necessarily have a one-to-one correspondence.

[0047] Second, in order to allow the light to be continuously transmitted by total reflection inside the light guide 100 , thereby improving the light transmission efficiency, the inner sidewall of the light guide 100 is a total reflection surface.

[0048] The light guide 100 provided in the present application has a light input portion 120 and a light output portion 130, the light input portion 120 is located at at least one end portion of the light guide 100, and the light output portion 130 is located on the side wall of the light guide 100; the inner side wall of the light guide 100 corresponding to the light output portion 130 is also provided with a plurality of light guide teeth 110, and the plurality of light guide teeth 110 are arranged along the length direction of the light guide 100; the light output portion 130 includes a light output surface 131 and a plurality of engraved portions 132 protruding from the light output surface 131, the engraved portions 132 have a convex curved surface arranged outward and are made of a light-transmitting material, the setting of the convex curved surface can make the emitted light diffuse in more directions, thereby increasing the viewing angle range of the light guide 100, so that the light can cover a wider area; at the same time, the setting of the convex curved surface helps to utilize the light more efficiently, so that the light efficiency of the light guide 100 is higher and the lighting effect is more uniform. Light enters the light guide 100 through the light input portion 120, is reflected by the light guide teeth 110, and reaches the light output portion 130. Some of the light exits through the scored portion 132 and diffuses, while another portion exits through the light output surface 131. The provision of the scored portion 132 in the light guide 100 expands the viewing angle of the light guide 100, improves the light efficiency of the light guide 100, and provides a more uniform lighting effect.

[0049] Another aspect of this utility model, please refer to Figure 8 , provides an optical component 200, including a circuit board 210, a light source 220 and a light guide 100; the light guide 100 includes at least one, the light source 220 is arranged on the circuit board 210 and is arranged corresponding to the light incident portion 120 of the light guide 100.

[0050] Specifically, if Figure 8 and Figure 9 As shown, the optical assembly 200 includes an electrically connected circuit board 210 and a light source 220. The circuit board 210 can provide electrical energy to the light source 220. The light output side of the light source 220 is arranged corresponding to the light input portion 120 of the light guide 100, so that light emitted by the light source 220 can enter the interior of the light guide 100 through the light input portion 120 of the light guide 100. The specific structure and beneficial effects of the light guide 100 have been described in detail above and will not be repeated here.

[0051] It should be noted that, in one possible implementation of the present application, first, the light source 220 includes at least one, and each light incident portion 120 of the light guide 100 is correspondingly provided with at least one light source 220 .

[0052] Specifically, the light source 220 may be an LED; in one embodiment, Figure 9 As shown, the light entrance portion 120 of a light guide 100 is correspondingly provided with two light sources 220, one light source 220 can emit yellow light and the other light source 220 can emit white light. The two light sources 220 respectively emit two different colors of light to transmit different indication signals through the conversion of different colors of light.

[0053] Of course, in addition to the above-mentioned arrangement of two light sources 220 to respectively emit light beams of different colors, three light sources 220, four light sources 220, etc. can also be set. The present application does not impose any restrictions on the specific number of light sources 220 and the color of the emitted light. Similarly, in addition to the above-mentioned arrangement of multiple light sources 220 to respectively emit light of different colors, only one light source 220 can be set, and the light source 220 emits at least one color, and can also transmit different indication signals through the conversion of light of different colors. The present application does not impose any restrictions on this.

[0054] Second, the number of the light guide 100 is at least one. Of course, the number of the light guide 100 can also be increased according to the lighting effect required by the optical component 200. Figure 9 As shown, when the light guide 100 includes multiple light guides, the multiple light guides 100 are arranged side by side and connected to each other to improve stability; in the actual production process, the multiple light guides 100 can be made into an integrated part to improve assembly efficiency.

[0055] The optical assembly 200 is provided with the light guide 100 so that light can be emitted at a wider angle, thereby significantly expanding the lighting range of the vehicle lamp and achieving a uniform lighting effect.

[0056] For example, Figure 10 As shown, the optical component 200 further includes a thick wall 230, the thick wall 230 having a first light incident surface 231 and a first light emitting surface 232, the first light incident surface 231 is arranged toward the light emitting portion 130 of the light guide 100; Figure 12 As shown, the first light incident surface 231 is provided with a plurality of first patterns 2311. Preferably, the first patterns 2311 are pyramidal or quasi-pyramid-shaped patterns to further even out the light. Light emitted from the light exit portion 130 of the light guide 100 enters the thick wall 230 through the first light incident surface 231 and exits through the first light exit surface 232.

[0057] Specifically, in order to further improve the optical performance of the optical assembly 200, as shown in FIG. Figure 12 As shown, a plurality of first patterns 2311 are provided on the first light incident surface 231 of the thick wall 230 , which can diffuse the light and ensure the uniformity of lighting, and can also shield and beautify other internal components.

[0058] Furthermore, if Figure 8 As shown, the optical assembly 200 further includes an inner lens 240, which is disposed between the thick wall 230 and the light guide 100. The inner lens 240 has a second light-incident surface 241 and a second light-exiting surface 242. The second light-incident surface 241 is disposed toward the light-exiting portion 130 of the light guide 100. The second light-incident surface 241 has a second pattern 2411, preferably a grid-like pattern. Light emitted from the light-exiting portion 130 of the light guide 100 enters the inner lens 240 through the second light-incident surface 241 and exits through the second light-exiting surface 242.

[0059] Specifically, if Figure 8 As shown, the optical assembly 200 also includes an inner lens 240. This lens 240 precisely distributes light, controlling its emission direction and intensity distribution. It also improves light utilization efficiency and reduces light loss. It directs light to the area in need of illumination, avoiding light waste and scattering, thereby improving the overall lighting efficiency of the headlight.

[0060] In order to further improve the optical performance of the optical assembly 200, as Figure 11 As shown, the second light incident surface 241 of the endoscope 240 has a second pattern 2411 , and the second pattern 2411 can achieve the effect of uniform light.

[0061] Another aspect of the present invention provides a vehicle (not shown) comprising an optical assembly 200. The optical assembly 200 significantly expands the illumination range of the vehicle's headlights, providing uniform lighting and enhanced illumination or guidance. This provides the driver with a wider field of vision during nighttime driving or inclement weather, helping to promptly alert pedestrians and vehicles, as well as detect obstacles, pedestrians, and other vehicles on the road, thereby improving driving safety. The specific structure and beneficial effects of the optical assembly 200 have been described in detail above and will not be further elaborated here.

[0062] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

[0063] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A light guide, characterized in that The light guide (100) comprises a light entrance portion (120) and a light exit portion (130), wherein the light entrance portion (120) is located at at least one end portion of the light guide (100), and the light exit portion (130) is located at a side wall of the light guide (100); a plurality of light guide teeth (110) are further provided on the inner side wall of the light guide (100) corresponding to the light exit portion (130), and the plurality of light guide teeth (110) are arranged along the length direction of the light guide (100); the light exit portion (130) ) comprises a light emitting surface (131) and a plurality of engraved portions (132) convexly arranged on the light emitting surface (131), wherein the engraved portions (132) have a convex curved surface arranged outward and are made of a light-transmitting material; light enters the light guide (100) from the light incident portion (120), is reflected by the light guide teeth (110) to the light emitting portion (130), part of the light is emitted through the engraved portions (132) and diffused, and another part of the light is emitted through the light emitting surface (131).

2. The light guide according to claim 1, wherein The engraved portion (132) is semi-cylindrical or spherical.

3. The light guide according to claim 1, wherein The plurality of engraved line portions are arranged along the length direction of the light guide (100) and are arranged corresponding to the light guide teeth (110).

4. The light guide according to claim 1, wherein The inner side wall of the light guide (100) is a total reflection surface.

5. An optical component, characterized in that: The invention comprises a circuit board (210), a light source (220) and a light guide (100) as claimed in any one of claims 1 to 4; the light guide (100) comprises at least one light source (220) which is arranged on the circuit board (210) and corresponds to the light incident portion (120) of the light guide (100).

6. The optical component according to claim 5, wherein: The optical component (200) further comprises a thick wall (230), wherein the thick wall (230) has a first light incident surface (231) and a first light emitting surface (232), wherein the first light incident surface (231) is arranged toward the light emitting portion (130) of the light guide (100); the first light incident surface (231) has a plurality of first patterns (2311), and light emitted from the light emitting portion (130) of the light guide (100) enters the thick wall (230) through the first light incident surface (231) and is emitted from the first light emitting surface (232).

7. The optical component according to claim 6, wherein: The optical component (200) further comprises an inner mirror (240), which is arranged between the thick wall (230) and the light guide (100); the inner mirror (240) has a second light incident surface (241) and a second light exit surface (242), wherein the second light incident surface (241) is arranged toward the light exit portion (130) of the light guide (100); the second light incident surface (241) has a second pattern (2411), and light emitted from the light exit portion (130) of the light guide (100) enters the inner mirror (240) through the second light incident surface (241) of the inner mirror (240) and exits from the second light exit surface (242).

8. The optical component according to claim 5, wherein: The light source (220) includes at least one, and the light incident portion (120) of each light guide (100) is correspondingly provided with at least one light source (220).

9. The optical component according to claim 5, wherein: When the light guide (100) comprises a plurality of light guides (100), the plurality of light guides (100) are arranged side by side and connected to each other.

10. A vehicle, characterized in that: The optical component (200) comprises any one of claims 5 to 9.

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