Light guide assembly, light-emitting device and motor vehicle
By designing a multifunctional light guide assembly, the light incident part, the reflective part and the exit part are used to guide and reflect light of different colors, the existing light emitting devices are solved, and the space saving and various functions are achieved.
Patent Information
- Application Number
- CN202422071277.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-08-23
AI Technical Summary
Due to the single-function design and high heat generation problems, the existing motor vehicle light emitting devices have increased the size, complicated assembly and large space.
A light guide assembly is designed, including a light incident part, a light reflecting part and a light exit part, and guides and reflects light of different colors through at least two light incident elements and a reflecting surface to achieve a multifunctional luminous effect.
A variety of optical functions are achieved through a single light guide assembly, reducing the number and space of the light emitting device, while simplifying the assembly process.
Smart Images
Figure CN222963774U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an optical waveguide component, a light-emitting device and a motor vehicle. Background Art
[0002] The light-emitting device can be used as various lighting and / or optical signal indicating devices to provide light for lighting and / or optical indication, and is widely used in various fields. For example, in motor vehicles, light-emitting devices such as vehicle lamps are used to ensure safe driving. In motor vehicles, various types of vehicle lamps are often required to achieve different functions, including automotive headlamps, fog lamps, tail lamps, turn signals, brake lamps, parking lamps, and so on. In existing motor vehicles, a single light-emitting device usually can only achieve one function. Therefore, to meet the requirements of road regulations for lighting and / or signal indication functions, multiple light-emitting devices need to be configured for motor vehicles, which results in the light-emitting devices occupying a large space.
[0003] In addition, in the prior art, the heat generated by the light source of the light-emitting device is relatively large, especially when a light-emitting diode (LED) is used as the light source. Therefore, a separate radiator usually needs to be provided for the light-emitting device, which leads to an increase in the volume of the light-emitting device on the one hand and more complex assembly on the other hand. Summary of the Utility Model
[0004] The purpose of the utility model is to provide an optical waveguide component, a light-emitting device and a motor vehicle.
[0005] On the one hand, an optical waveguide component is provided. The optical waveguide component includes: an optical incident part configured to receive incident light; an optical reflection part configured to receive and reflect the light from the optical incident part; and an optical output part configured to output outward the light reflected from the optical reflection part. Wherein, the optical incident part includes at least one first optical incident element and at least one second optical incident element. The first optical incident element is configured to receive first incident light, and the second optical incident element is configured to receive second incident light. Wherein, the optical reflection part includes a first reflection surface and a second reflection surface. The first reflection surface is configured to reflect the first incident light from the first optical incident element, and the second reflection surface is configured to reflect the second incident light from the second optical incident element.
[0006] In an embodiment, the first incident light has a first color, and the second incident light has a second color different from the first color; the optical waveguide component is an integral part.
[0007] In an embodiment, the first reflection surface is a curved surface recessed into the interior of the optical waveguide component; the second reflection surface is a curved surface recessed into the interior of the optical waveguide component.
[0008] In one embodiment, the first reflective surface is connected to the second reflective surface and is inclined and oriented with respect to the exit surface of the light exit portion such that the second reflective surface is closer to the exit surface of the light exit portion than the first reflective surface.
[0009] In one embodiment, the distance between the connection point between the first reflective surface and the second reflective surface and the exit surface is a length; the minimum radius of curvature of the first reflective surface is less than √2 times the length; the minimum radius of curvature of the second reflective surface is less than √2 times the length.
[0010] In one embodiment, the divergence angle of the light after being reflected by the first reflective surface is greater than the divergence angle of the light before reflection; the divergence angle of the light after being reflected by the second reflective surface is greater than the divergence angle of the light before reflection.
[0011] In one embodiment, the light exit portion is configured to emit the light reflected from the light reflection portion outward in a first direction, and the first light incident element and the second light incident element are arranged connected to each other along the first direction.
[0012] In one embodiment, a plurality of first light incident elements, the plurality of first light incident elements are arranged in a row along a second direction, and two adjacent first light incident elements among the plurality of first light incident elements are connected to each other; and a plurality of second light incident elements, the plurality of second light incident elements are arranged in a row along the second direction, and two adjacent second light incident elements among the plurality of second light incident elements are connected to each other; the second direction is perpendicular to the first direction.
[0013] In one embodiment, the number of the plurality of first light incident elements is equal to the number of the plurality of second light incident elements, and the plurality of first light incident elements and the plurality of second light incident elements are arranged in one-to-one correspondence.
[0014] In one embodiment, collimators are provided on the surfaces of the first light incident element and the second light incident element to collimate the received light into parallel light; the parallel light propagates along a third direction, and the third direction is orthogonal to the first direction and the second direction.
[0015] In one embodiment, a light diffusion structure is provided on the exit surface of the light exit portion, and the light diffusion structure diffuses the light and then emits it.
[0016] On the other hand, a light emitting device is provided, which includes a first light source configured to emit first incident light; a second light source configured to emit second incident light; and a light guide assembly according to an embodiment of the present invention.
[0017] In one embodiment, the first incident light has a first color, and the second incident light has a second color; the first light source and the first light incident element are arranged in one-to-one correspondence, and the second light source and the second light incident element are arranged in one-to-one correspondence.
[0018] On the other hand, a motor vehicle is provided, which includes an optical waveguide assembly or a light emitting device according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 A perspective view showing an optical waveguide assembly according to an embodiment of the present invention.
[0020] Figure 2 A cross-sectional view showing a light emitting device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] The technical solutions of the present invention will be further specifically described below through embodiments in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation of the present invention.
[0022] In addition, in the following detailed description, for the sake of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments disclosed herein. However, it is obvious that one or more embodiments may be practiced without these specific details.
[0023] Figure 1 A perspective view showing an optical waveguide assembly 100 according to an embodiment of the present invention is shown. Figure 2 A cross-sectional view showing a light emitting device 200 according to an embodiment of the present invention is shown.
[0024] As Figure 1 and Figure 2 shown, the optical waveguide assembly 100 according to an embodiment of the present invention includes a light incident portion 10, a light reflection portion 20, and a light exit portion 30. The light incident portion 10 is configured to receive incident light from light sources 510, 520 and guide the incident light into the optical waveguide assembly 100. The light reflection portion 20 is configured to receive and reflect the light from the light incident portion 10 to guide the light to the light exit portion 30. The light exit portion 30 is configured to emit the light reflected from the light reflection portion 20 outward.
[0025] According to an embodiment of the present invention, the light incident portion 10 may include at least one first light incident element 110 and at least one second light incident element 120. The first light incident element 110 may be configured to receive first incident light Lin1 of a first color, and the second light incident element 120 is configured to receive second incident light Lin2 of a second color. As an example, the first light incident element 110 may be configured to correspond to the first light source 510 to receive the first incident light Lin1 from the first light source 510. The second light incident element 120 may be configured to correspond to the second light source 520 to receive the second incident light Lin2 from the second light source 520. For example, the first light source 510 may be configured to emit red light to be lit when the light emitting device 200 is used for the taillight function. The second light source 520 may be configured to emit yellow light to be lit when the light emitting device 200 is used for the turn signal function. The first light source 510 and the second light source 520 may be disposed on the lower surface of the same circuit board.
[0026] Furthermore, the light reflecting portion 20 may include a first reflecting surface 210 and a second reflecting surface 220. The first reflecting surface 210 is configured to reflect the light from the first light incident element 110, and the second reflecting surface 220 is configured to reflect the light from the second light incident element 120. As an example, the first light incident element 110 may direct the received first incident light Lin1 of the first color toward the first reflecting surface 210, such that the first reflecting surface 210 can receive and reflect the light from the first light incident element 110. Similarly, the second light incident element 120 may direct the received second incident light Lin2 of the second color toward the second reflecting surface 220, such that the second reflecting surface 220 can receive and reflect the light from the second light incident element 120.
[0027] In this way, the light guide assembly 100 according to an embodiment of the present invention can achieve the guiding of at least two different colors of light, so that at least two colors of light can be selectively emitted. For example, as described above, red light or yellow light can be selectively emitted according to functional requirements for the taillight function or the turn signal function, respectively. Therefore, by using the light guide assembly 100 according to an embodiment of the present invention, it is possible to avoid using a separate corresponding light guide assembly or light emitting device for each light source, but rather a single light guide assembly 100 can be adapted to two or more light sources to integrate multiple functions, thereby reducing the number and occupied space of the light guide assembly or the light emitting device.
[0028] It should be understood that the embodiments of the present utility model are not limited to emitting light of two colors. For example, the light guide assembly 100 may include additional light incident elements and additional reflecting surfaces to be adapted to receive incident light of a third color, thereby realizing a third lighting or signal indication function. Additionally or alternatively, the first light source 510 and the second light source 520 may be lit simultaneously to form lighting of a third color, or the brightness of the first light source 510 or the second light source 520 may be adjusted to form lighting of a third color.
[0029] In one embodiment, the light guide assembly 100 according to the embodiment of the present utility model is an integrally formed unitary member.
[0030] In one embodiment, the first reflecting surface 210 is a curved surface recessed into the interior of the light guide assembly 100 and has a first curvature, and the second reflecting surface 220 is a curved surface recessed into the interior of the light guide assembly 100 and has a second curvature. As Figure 2 shown, the first reflecting surface 210 and the second reflecting surface 220 are arranged to have curved surfaces curved towards the interior of the light guide assembly 100, rather than flat planes.
[0031] In this way, the first reflecting surface 210 and the second reflecting surface 220 can reflect the light from the light incident portion 10 in a divergent manner, rather than reflecting the light from the light incident portion 10 at the same reflection angle as in the case of a flat plane. Thus, the optical path of the reflected light in the first direction D1 can be shortened. That is, compared with the case of a flat plane, the reflected light can reach the desired diffusivity within a shorter distance in the first direction D1 to achieve the desired optical distribution uniformity at the light exit portion 30. Therefore, by providing the curved first reflecting surface 210 and the second reflecting surface 220, the distance of the light guide assembly 100 in the first direction D1 can be shortened, thereby further reducing the occupied space of the light guide assembly or the lighting device. As Figure 2 shown, the first direction D1 may be the direction in which the light exit portion 30 emits the light reflected from the light reflecting portion 20 outward.
[0032] In one embodiment, the first reflecting surface 210 and the second reflecting surface 220 are connected and are inclinedly oriented with respect to the exit surface 310 of the light exit portion 30 such that the second reflecting surface 220 is closer to the exit surface 310 of the light exit portion 30 than the first reflecting surface 210. As Figure 2 shown, the first reflecting surface 210 and the second reflecting surface 220 may be arranged to be connected to each other to jointly form an integral reflecting surface. The formed integral reflecting surface may be inclinedly arranged with respect to the exit surface 310 of the light exit portion 30 such that the light from the light incident portion 10 can be reflected towards the light exit portion 30.
[0033] Furthermore, as Figure 2As shown, when the overall reflecting surface formed by the first reflecting surface 210 and the second reflecting surface 220 is arranged obliquely, the second reflecting surface 220 is closer to the exit surface 310 than the first reflecting surface 210, which makes the distance between the second reflecting surface 220 and the exit surface 310 shorter than the distance between the first reflecting surface 210 and the exit surface 310.
[0034] In one embodiment, the first reflecting surface 210 and the second reflecting surface 220 can be configured according to the distance between the connection point between the first reflecting surface 210 and the second reflecting surface 220 and the exit surface 310, so as to have a desired lighting effect. As an example, as Figure 2 shown, the first reflecting surface 210 and the second reflecting surface 220 are connected at the connection point P. However, it should be noted that the connection between the first reflecting surface 210 and the second reflecting surface 220 can be a connecting surface or a connecting line. For the convenience of explanation and illustration in this article, the connection between the two is shown as the connection point P in Figure 2 this case. In addition, the distance between the connection point P and the exit surface 310 can have a length d. In this case, the two reflecting surfaces can be configured in such a way that the minimum radius of curvature of the first reflecting surface 210 is less than √2 times the length d, and the minimum radius of curvature of the second reflecting surface 220 is less than √2 times the length d.
[0035] In this way, a desired lighting effect can be obtained given the arrangement space for the light guide assembly 100. For example, in some cases, the space available for placing the light guide assembly 100 may be limited, so the distance d between the connection point P and the exit surface 310 will be restricted. By configuring the first reflecting surface 210 and the second reflecting surface 220 in the above-described manner of restricting the minimum radius of curvature, it can be ensured that the reflected light has a desired optical distribution uniformity and brightness at the exit surface 310.
[0036] In one embodiment, the divergence angle of the light rays reflected by the first reflecting surface 210 is greater than the divergence angle of the light rays before reflection, and the divergence angle of the light rays reflected by the second reflecting surface 220 is greater than the divergence angle of the light rays before reflection. In this way, the optical path of the reflected light in the first direction D1 can be shortened, so as to provide a desired lighting effect in cooperation with possible space limitations.
[0037] In one embodiment, the first light incident element 110 and the second light incident element 120 can be arranged connected to each other along the first direction D1. As Figure 1 - Figure 2As shown, the first light incident element 110 and the second light incident element 120 can be arranged along the first direction D1. That is, the first light incident element 110 and the second light incident element 120 are arranged in sequence in the direction in which the reflected light travels toward the exit surface 310. In this way, the arrangement of the two light sources (i.e., the first light source 510 and the second light source 520) can be facilitated to reduce the occupied space of the light sources, and at the same time, similar or identical optical lighting effects can be achieved by matching the different curvatures of their respective reflection surfaces. Further, by connecting the first light incident element 110 and the second light incident element 120 to each other, it is beneficial to the compactness of the light guide assembly 100 and the compactness of the corresponding light source arrangement.
[0038] In one embodiment, as Figure 1 - Figure 2 shown, the light incident portion 10 may include a plurality of first light incident elements 110 and a plurality of second light incident elements 120. The plurality of first light incident elements 110 are arranged in a row along the second direction D2, and two adjacent first light incident elements 110 among the plurality of first light incident elements 110 are connected to each other. The plurality of second light incident elements 120 are arranged in a row along the second direction D2, and two adjacent second light incident elements 120 among the plurality of second light incident elements 120 are connected to each other. Wherein, the second direction D2 is perpendicular to the first direction D1. As an example, the light guide assembly 100 can be integrally formed to obtain the first light incident element 110 and the second light incident element 120 that are connected to each other. In this way, the production of the light guide assembly 100 can be simplified and the yield can be improved.
[0039] In one embodiment, the number of the plurality of first light incident elements 110 is equal to the number of the plurality of second light incident elements 120, and the plurality of first light incident elements 110 and the plurality of second light incident elements 120 are arranged in one-to-one correspondence. In this way, the light emission brightness when each function is lit can be made similar.
[0040] In one embodiment, as Figure 1 shown, collimators 40 are provided on the surfaces of the first light incident element 110 and the second light incident element 120 to collimate the received light into parallel light, and the parallel light propagates along the third direction D3, and the third direction D3 is orthogonal to the first direction D1 and the second direction D2. In this way, by using the collimators 40, the reflection surface can receive parallel light with the same incident angle. Then, by matching the curved surface setting of the reflection surface, the divergence of the reflected light can be better controlled to achieve the desired optical distribution effect. Alternatively, the collimator 40 can be provided between the light source and the light incident side or the light incident surface of the light incident portion 10.
[0041] In one embodiment, as Figure 1As shown, the light-emitting surface 310 of the light-emitting unit 30 is provided with a light diffusion structure. According to an embodiment of the present invention, the light diffusion structure can cause the distribution and spreading of the light beam at the light-emitting position to further diffuse the light and improve the uniformity of the light-emitting effect. As an example, the light diffusion structure can be composed of at least partially light-transmissive materials. For example, the light diffusion structure can be an array of micro-pillow-shaped structures, an array of micro-lenses, or a leather grain structure. However, the embodiments of the present invention are not limited thereto.
[0042] Embodiments of the present invention also provide a light-emitting device 200. As Figure 2 shown, the light-emitting device 200 includes a first light source 510, a second light source 520, and an optical waveguide assembly 100 according to the present invention. The first light source 510 is configured to emit first incident light Lin1 of a first color. The second light source 520 is configured to emit second incident light Lin2 of a second color. As an example, the first light source 510 can be configured to emit red light for the taillight lighting function. The second light source 520 can be configured to emit yellow light for the turn signal lighting function. However, the embodiments of the present invention are not limited thereto.
[0043] In one embodiment, the first light source 510 can be arranged in one-to-one correspondence with the first light-incident element 110, and the second light source 520 can be arranged in one-to-one correspondence with the second light-incident element 120.
[0044] Embodiments of the present invention also provide a motor vehicle, which includes the optical waveguide assembly 100 or the light-emitting device 200 according to the present invention.
[0045] As an example, the optical waveguide assembly 100 can be made of transparent glass, resin, or plastic materials, such as PMMA (polymethyl methacrylate) or polycarbonate as an example.
[0046] As an example, the optical waveguide assembly 100 can be supported by any known suitable device for holding optical elements, such as a support, etc.
[0047] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the present invention and should not be construed as a limitation to the present invention.
[0048] Although some embodiments of the general concept of the present invention have been shown and described, those of ordinary skill in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the general concept of the present invention, and the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A light guide assembly (100), characterized in that: include: a light incident portion (10), wherein the light incident portion (10) is configured to receive incident light; a light reflecting portion (20), the light reflecting portion (20) being configured to receive and reflect light from the light incident portion (10); as well as a light emitting portion (30), the light emitting portion (30) being configured to emit light reflected from the light reflecting portion (20) outward; The light incident portion (10) comprises at least one first light incident element (110) and at least one second light incident element (120), the first light incident element (110) being configured to receive a first incident light (Lin1), and the second light incident element (120) being configured to receive a second incident light (Lin2); The light reflecting portion (20) comprises a first reflecting surface (210) and a second reflecting surface (220), wherein the first reflecting surface (210) is configured to reflect the first incident light (Lin1) from the first light incident element (110), and the second reflecting surface (220) is configured to reflect the second incident light (Lin2) from the second light incident element (120).
2. The light guide assembly (100) according to claim 1, characterized in that: The first incident light (Lin1) has a first color, and the second incident light (Lin2) has a second color different from the first color; The light guide assembly (100) is an integral piece.
3. The light guide assembly (100) according to claim 1, characterized in that: The first reflective surface (210) is a curved surface that is concave toward the interior of the light guide component (100); The second reflective surface (220) is a curved surface that is concave toward the interior of the light guide component (100).
4. The light guide assembly (100) according to claim 3, characterized in that: The first reflecting surface (210) is connected to the second reflecting surface (220) and is tilted relative to the exit surface (310) of the light exit portion (30), so that the second reflecting surface (220) is closer to the exit surface (310) of the light exit portion (30) relative to the first reflecting surface (210); The distance between the connection point (P) between the first reflecting surface (210) and the second reflecting surface (220) and the exit surface (310) is a length (d); The minimum curvature radius of the first reflecting surface (210) is less than the length (d). times; The minimum curvature radius of the second reflective surface (220) is smaller than the length (d). times.
5. The light guide assembly (100) according to claim 3, characterized in that: The divergence angle of the light after being reflected by the first reflecting surface (210) is greater than the divergence angle of the light before being reflected; The divergence angle of the light after being reflected by the second reflecting surface (220) is greater than the divergence angle of the light before being reflected.
6. The light guide assembly (100) according to claim 1, characterized in that: The light emitting portion (30) is configured to emit light reflected from the light reflecting portion (20) outwardly along a first direction (D1), and the first light incident element (110) and the second light incident element (120) are arranged to be connected to each other along the first direction (D1).
7. The light guide assembly (100) according to claim 6, characterized in that: The light incident portion (10) comprises: a plurality of first light incident elements (110), the plurality of first light incident elements (110) being arranged in a row along a second direction (D2), and two adjacent first light incident elements (110) among the plurality of first light incident elements (110) being connected to each other; and a plurality of second light incident elements (120), the plurality of second light incident elements (120) being arranged in a row along a second direction (D2), and two adjacent second light incident elements (120) among the plurality of second light incident elements (120) being connected to each other; The second direction (D2) is perpendicular to the first direction (D1); The number of the plurality of first light incident elements (110) is equal to the number of the plurality of second light incident elements (120), and the plurality of first light incident elements (110) and the plurality of second light incident elements (120) are arranged in a one-to-one correspondence.
8. The light guide assembly (100) according to any one of claims 1 to 7, characterized in that: A collimator (40) is provided on the surface of the first light incident element (110) and the surface of the second light incident element (120) to collimate the received light into parallel light; The parallel light propagates along a third direction (D3), and the third direction (D3) is orthogonal to the first direction (D1) and the second direction (D2); The exit surface (310) of the light exit portion (30) is provided with a light diffusion structure, and the light diffusion structure diffuses the light and then emits it.
9. A light emitting device (200), characterized in that: include: A first light source (510), the first light source (510) being configured to emit a first incident light (Lin1); a second light source (520), the second light source (520) being configured to emit a second incident light (Lin2); and The light guide assembly (100) according to any one of claims 1-8.
10. A motor vehicle, characterized in that: It comprises the light guide assembly (100) according to any one of Claims 1 to 8, or the light emitting device (200) according to Claim 9.