Light guide member and vehicle lamp

Abstract

The application discloses a light guide component and a vehicle lamp. The light guide component has a preset main light emitting direction. The light guide component has a light emitting surface and a peripheral wall. The peripheral wall is annularly arranged on the peripheral side of the light emitting surface. The peripheral wall is provided with a reflection pattern. The reflection pattern is provided with at least one reflection bump. The reflection bump is provided with a reflection surface. The light emitting surface is provided with a diffusion pattern. The diffusion pattern comprises a plurality of diffusion bumps. The diffusion bumps are provided with mutually-adjacent diffusion surfaces and refraction surfaces arranged at an angle. At least part of the refraction surfaces is arranged on the light emitting direction of the reflection surface. The propagation direction of the light refracted by the refraction surfaces is arranged at an angle with the main light emitting direction of the light guide component. The reflection pattern is arranged on the peripheral wall of the light guide component, so that the reflection pattern is avoided from being arranged on the light emitting surface, the integrity of the diffusion pattern is ensured, the consistency of the appearance of the light emitting surface of the light guide component is improved, the static appearance of the light guide component is beautiful, and the appearance design requirement is met.

Description

Technical Field

[0001] This application relates to the field of vehicle lighting technology, and in particular to a light guide component and a vehicle lamp. Background Technology

[0002] With the development of vehicle technology, people have increasingly higher requirements for the appearance of lamps, which also places high demands on the appearance of lamps when they are not lit. In order to meet the brightness requirements of regulations for a wide viewing angle, existing technologies often set relevant reflective patterns on the light-emitting surface of the lamp to reflect light to a wide viewing angle. However, the reflective patterns are inconsistent with the appearance of the light-emitting surface of the lamp, which affects the aesthetics of the lamp when it is static.

[0003] Therefore, improvements to existing technologies are necessary. Utility Model Content

[0004] This application aims to solve at least one of the technical problems existing in the prior art by providing a light guide component and a vehicle lamp.

[0005] According to one aspect of this application, a light guide component is provided, having a preset main light emission direction. The light guide component has a light-emitting surface and a peripheral wall, the peripheral wall being disposed around the periphery of the light-emitting surface. The peripheral wall is provided with a reflective pattern, the reflective pattern having at least one reflective bump, the reflective bump having a reflective surface. The light-emitting surface is provided with a diffusion pattern, the diffusion pattern including a plurality of diffusion bumps, the diffusion bumps having adjacent diffusion surfaces and refractive surfaces set at an angle to each other, at least a portion of the refractive surfaces being disposed in the light emission direction of the reflective surfaces. The propagation direction of the light refracted by the refractive surfaces is set at an angle to the main light emission direction of the light guide component.

[0006] In one embodiment, the angle between the reflecting surface and the refracting surface is θ, and the critical angle for total internal reflection of the reflecting surface and the refracting surface is β, satisfying: 90°-β<θ<2β.

[0007] In one embodiment, the peripheral wall is provided with a receiving groove, and the reflective protrusion is received in the receiving groove.

[0008] In one embodiment, the reflective surface is a wavy surface consisting of multiple connected curved surfaces, the curved surfaces bulging toward the side away from the refractive surface.

[0009] In one embodiment, a reference surface λ is set perpendicular to the main light-emitting direction of the light guide component, and the reference surface λ is disposed on the light-emitting side of the light guide component; the angle between the reflective surface and the reference surface λ is an obtuse angle.

[0010] In one embodiment, the angle between the refracting surface and the main light-emitting direction is α, satisfying: 1°≤α≤3°.

[0011] In one embodiment, at least two reflective bumps are sequentially arranged along the main light-emitting direction of the light guide component; the peripheral wall with the reflective pattern is referred to as the first surface, and the minimum distance from the end of the reflective surface of the reflective bump away from the first surface to the first surface gradually increases in the main light-emitting direction of the light guide component.

[0012] According to another aspect of this application, a vehicle lamp is provided, including any of the aforementioned light guide components.

[0013] The beneficial effects of this application are: by combining the reflective and refractive surfaces, a wide range of illumination angles can be achieved, and the reflective pattern (i.e., the reflective surface) is set on the peripheral wall of the light guide component. The reflective pattern required for a wide viewing angle is set on the peripheral wall surface, avoiding the setting of the reflective pattern on the light-emitting surface, ensuring the integrity of the diffusion pattern, which is conducive to improving the consistency of the appearance of the light-emitting surface of the light guide component. The static appearance of the light guide component is beautiful, meeting the increasingly higher appearance design requirements. Attached Figure Description

[0014] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of a light guide component provided in an embodiment of this application.

[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0017] Figure 3 yes Figure 1 A sectional view.

[0018] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0019] Figure 5 This is a schematic diagram of the reflective surface structure in another embodiment.

[0020] Figure 6 This is a diagram showing the relative positions of a reflecting surface and a refracting surface provided in an embodiment of this application.

[0021] In the picture:

[0022] 10. Light guide component; 11. Light-emitting surface; 12. Peripheral wall;

[0023] 20. Reflective pattern; 21. Reflective bump; 211. Reflective surface;

[0024] 30. Diffusion pattern; 31. Diffusion bump; 311. Diffusion surface; 312. Refraction surface;

[0025] 40. Receiving tank;

[0026] 50. First page. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] The light guide component and vehicle lamp in this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In existing technologies, reflective patterns are often set on the light-emitting surface of lamps to reflect light to a wide viewing angle. However, the reflective patterns are inconsistent with the appearance of the light-emitting surface of the lamp, which affects the aesthetics of the lamp when it is static.

[0031] To address the aforementioned technical problems, this application provides a light guide component with a preset main light emission direction. The light guide component has a light-emitting surface and a peripheral wall, with the peripheral wall surrounding the light-emitting surface. The peripheral wall has a reflective pattern, with at least one reflective protrusion in the reflective pattern, and each reflective protrusion has a reflective surface. The light-emitting surface has a diffusion pattern, which includes multiple diffusion protrusions. Each diffusion protrusion has an adjacent diffusion surface and a refractive surface, and at least a portion of the refractive surface is disposed in the light emission direction of the reflective surface. The propagation direction of the light refracted by the refractive surface is angled to the main light emission direction of the light guide component. This will be described in detail below.

[0032] See Figure 1-4The light guide component 10 has a preset main light emission direction, and the light guide component 10 has a light-emitting surface 11 and a peripheral wall 12, the peripheral wall 12 being arranged around the light-emitting surface 11; the peripheral wall 12 is provided with a reflective pattern 20, the reflective pattern 20 having at least one reflective bump 21, the reflective bump 21 having a reflective surface 211; the light-emitting surface 11 is provided with a diffusion pattern 30, the diffusion pattern 30 including a plurality of diffusion bumps 31, the diffusion bumps 31 having adjacent diffusion surfaces 311 and refracting surfaces 312 arranged at an angle, at least a portion of the refracting surfaces 312 being arranged in the light emission direction of the reflective surface 211; the propagation direction of the light refracted by the refracting surface 312 is arranged at an angle to the main light emission direction of the light guide component 10.

[0033] The reflective surface 211 is configured to receive light rays. The light rays, after striking the reflective surface 211, are reflected by the reflective surface 211 and then directed towards the refractive surface 312. Finally, after refraction by the refractive surface 312, the light rays exit the light guide component 10. The propagation direction of the light rays emitted after refraction by the refractive surface 312 is the same as the main light-emitting direction of the light guide component 10 (e.g., ...). Figure 1 as well as Figure 2-6 The light guide component 10 is set at an angle to the X-axis (which is the overall light emission direction of the light guide component 10). This means that the light refracted by the refractive surface 312 is distributed to a wide viewing angle area, meeting regulatory requirements. Through the cooperation of the reflective surface 211 and the refractive surface 312, a wide-angle illumination range is achieved. The reflective pattern 20 (i.e., the reflective surface 211) is set on the peripheral wall 12 of the light guide component 10. The reflective pattern 20 required for a wide viewing angle is set on the wall surface of the peripheral wall 12, avoiding the setting of the reflective pattern 20 on the light-emitting surface 11. This ensures the integrity of the diffusion pattern 30 and helps to improve the consistency of the appearance of the light-emitting surface 11 of the light guide component 10. The static appearance of the light guide component 10 is aesthetically pleasing, meeting the increasingly demanding appearance design requirements.

[0034] In practical applications, the light guide component 10 is configured to receive light emitted from the light source. After the light emitted from the light source enters the light guide component 10, part of the light is diffused out through the diffusion pattern 30 (the setting of the diffusion pattern 30 helps to improve the uniformity of the final illumination of the light guide component 10), and part of the light is directed to the reflective surface 211 of the reflective pattern 20. After being reflected by the reflective surface 211, it is directed to the refractive surface 312 and finally refracted into a wide-angle visible range.

[0035] It is worth mentioning that, in some embodiments, some of the light rays incident on the reflective surface 211 are reflected by the reflective surface 211 and then incident on the refractive surface 312, while some light rays are refracted out of the light guide component 10 through the reflective surface 211 due to different incident angles, forming stray light. Since the reflective pattern 20 is set on the peripheral wall 12 of the light guide component 10, the stray light formed is emitted outward from the peripheral wall 12 of the light guide component 10, which will not affect the light emitted from the light-emitting surface 11 of the light guide component 10, which is beneficial to improving the overall lighting effect.

[0036] It should be noted that the diffuser surface 311 and the refractive surface 312 are set at an angle, which is not equal to 180°; similarly, the angle between the propagation direction of the light refracted by the refractive surface 312 and the main light output direction of the light guide component 10 is not equal to 180°; in some embodiments, both the diffuser surface 311 and the refractive surface 312 have the function of diffusing light, which is beneficial to improving the uniformity of the illumination of the light guide component 10.

[0037] In some embodiments, multiple reflective bumps 21 may be provided, and the design may be carried out according to the actual illumination range, etc., which will not be described in detail here.

[0038] See Figure 6 The angle between the reflecting surface 211 and the refracting surface 312 is θ, and the critical angle for total internal reflection of the reflecting surface 211 and the refracting surface 312 is β, satisfying: 90°-β<θ<2β.

[0039] The critical angle β indicates that when the incident angle of light is greater than β, the light undergoes total internal reflection at the reflecting surface 211 or the refracting surface 312. When the angle θ between the reflecting surface 211 and the refracting surface 312 satisfies 90°-β<θ<2β, it can be ensured that the light rays that are totally internally reflected by the reflecting surface 211 and then directed to the refracting surface 312 are refracted by the refracting surface 312. Most of the light rays are refracted out of the light guide component 10 by the refracting surface 312, which is beneficial to improve the light flux in a wide viewing angle range and improve the brightness of the light source.

[0040] In practical applications, the light guide component 10 can be made of PC (polycarbonate) material, in which case the critical angle β is 39°. In order to make full use of the light, it is necessary to control the incident angle of the light rays incident on the reflective surface 211 to be greater than 39°. At the same time, the included angle θ is set to satisfy 51°<θ<78° (that is, the relative position between the reflective surface 211 and the refractive surface 312 is set), which can effectively prevent the light rays incident on the refractive surface 312 from undergoing total internal reflection, allowing more light rays to be refracted out of the light guide component 10 and directed to a wide viewing angle range, thereby improving the brightness of the illumination within that range. Similarly, the light guide component 10 can also be made of PMMA (polymethyl methacrylate) material, in which case β is 42°, which will not be elaborated here.

[0041] It should be noted that the angle between the normal to the surface used to receive light and the incident ray is the angle of incidence of that ray; in Figure 6 In the diagram, lines a and b represent two different positions of the refracting surface 312, and θ1 and θ2 are the included angles (the included angles between the refracting surface 312 and the reflecting surface 211) corresponding to the two different positions of the refracting surface 312.

[0042] In some embodiments, the peripheral wall 12 is provided with a receiving groove 40, and the reflective protrusion 21 is received in the receiving groove 40.

[0043] By opening a receiving groove 40 on the peripheral wall 12, the reflective protrusion 21 can be placed in the receiving groove 40, preventing the reflective protrusion 21 from protruding out of the peripheral wall 12. The reflective protrusion 21 is placed inside the receiving groove 40, making it less susceptible to external interference and preventing scratches during installation that could affect its use, thus improving the service life of the light guide component 10. Furthermore, the reflective protrusion 21 is not easily observed when viewed from the light-emitting side of the light guide component 10, which helps to improve the uniformity of the appearance of the light-emitting surface 11 of the light guide component 10.

[0044] It should be noted that in some embodiments, the reflective bump 21 may also be disposed on the surface of the peripheral wall 12, that is, the reflective bump 21 protrudes out. This arrangement facilitates processing and reduces processing difficulty and processing cost.

[0045] In some embodiments, the reflective surface 211 is a wavy surface consisting of multiple connected curved surfaces, with the curved surfaces bulging toward the side away from the refractive surface 312.

[0046] In this embodiment, the reflective surface 211 is set as a wave-shaped surface with multiple curved sections connected, that is, the complete emitting surface is divided into multiple curved surfaces, which can be adapted to the diffuser bump 31. That is, one curved surface corresponds to the refractive surface 312 of one diffuser bump 31, which is beneficial to improve the lighting effect. At the same time, by setting the curved surface, the light can be diffused, the lighting range can be increased, and the usage requirements can be met.

[0047] In some embodiments, the diffusion surface 311 may also be a convex curved surface (protruding toward the light-emitting side) to increase the illumination range and meet the light distribution requirements.

[0048] In some embodiments, a reference surface λ is set perpendicular to the main light-emitting direction of the light guide component 10, and the reference surface λ is disposed on the light-emitting side of the light guide component 10; the angle between the reflective surface 211 and the reference surface λ is an obtuse angle.

[0049] The reflective surface 211 forms an obtuse angle with the reference surface λ (e.g.) Figure 5 The reflective surface 211 is positioned such that it faces the light source, allowing it to receive more light and ensuring the brightness of the light reflected by the reflective surface 211, which is beneficial to the uniformity of overall illumination. In this embodiment, the light emitted from the light source enters the light guide component 10 from the light incident surface. When the reflective surface 211 and the reference surface λ form an acute angle or a right angle, the reflective surface 211 does not face the light source, and the light received by the reflective surface 211 is reduced accordingly, resulting in a decrease in the brightness of the light reflected by the reflective surface 211.

[0050] In some embodiments, the angle between the refracting surface 312 and the main light-emitting direction is α, which satisfies: 1°≤α≤3°, such as 1°, 2°, 3°, etc.

[0051] When the value of α is less than 1°, the refractive surface 312 tends to be vertical, which is not conducive to demolding and demolding can easily damage the light guide component 10. When the value of α is greater than 3°, the refractive surface 312 will encroach on the space of the diffuser surface 311, reducing the arrangement space of the diffuser surface 311 and making it difficult for the headlight to be lit. By setting the angle α between the refractive surface 312 and the main light output direction, it is possible to facilitate demolding while ensuring that the diffuser surface 311 receives more light, ensuring that the lighting brightness meets the design requirements.

[0052] See Figure 5 In some embodiments, at least two reflective bumps 21 are sequentially provided along the main light-emitting direction of the light guide component 10; the peripheral wall 12 with reflective pattern 20 is referred to as the first surface 50, and the distance from the end of the reflective surface 211 of the reflective bump 21 away from the first surface 50 to the minimum distance of the first surface 50 gradually increases in the main light-emitting direction of the light guide component 10.

[0053] In the main light-emitting direction of the light guide component 10, the minimum distance from the end of the reflective surface 211 away from the first surface 50 to the first surface 50 gradually increases, that is, the area of ​​the reflective surface 211 gradually increases. In other words, in the main light-emitting direction of the light guide component 10, among two adjacent reflective surfaces 211, the reflective surface 211 away from the light source will not be completely blocked by the reflective surface 211 close to the light source, and some of it will not be blocked. When the light incident on the light guide component 10 is parallel to the main light-emitting direction, it can be ensured that each reflective surface 211 can receive the light, ensuring that enough light is ultimately directed into the wide-angle viewing range, which is beneficial to improving the lighting effect.

[0054] On the other hand, this application also relates to a vehicle light, including any of the aforementioned light guide components 10.

[0055] The technical solution provided in this application aims to achieve illumination over a wide angle range by cooperating the reflective surface 211 and the refractive surface 312. The reflective pattern 20 (i.e., the reflective surface 211) is set on the peripheral wall 12 of the light guide component 10. The reflective pattern 20 required for a wide viewing angle is set on the wall surface of the peripheral wall 12, avoiding the setting of the reflective pattern 20 on the light-emitting surface 11. This ensures the integrity of the diffusion pattern 30, which is conducive to improving the consistency of the appearance of the light-emitting surface 11 of the light guide component 10. The static appearance of the light guide component 10 is beautiful, meeting the increasingly higher requirements for appearance design.

[0056] In the various embodiments of this application, unless otherwise specified or logically conflicting, the terminology or descriptions between different embodiments are consistent and can be referenced mutually. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships. In this application, "at least one" means one or more, and "more than one" means two or more.

[0057] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

[0058] The light guide component and vehicle lamp provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand this application and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A light guide component having a preset main light emission direction, characterized in that, The light guide component has a light-emitting surface and a peripheral wall, the peripheral wall being arranged around the periphery of the light-emitting surface; the peripheral wall is provided with a reflective pattern, the reflective pattern having at least one reflective bump, and the reflective bump having a reflective surface; The light-emitting surface is provided with a diffusion pattern, which includes a plurality of diffusion bumps. Each diffusion bump has a diffusion surface and a refractive surface that are adjacent to each other and set at an angle. At least a portion of the refractive surface is set in the light-emitting direction of the reflective surface. The propagation direction of the light refracted by the refractive surface is set at an angle to the main light-emitting direction of the light guide component.

2. The light guide component as described in claim 1, characterized in that, The angle between the reflecting surface and the refracting surface is θ, and the critical angle for total internal reflection of the reflecting surface and the refracting surface is β, satisfying: 90°-β<θ<2β.

3. The light guide component as described in claim 1, characterized in that, The peripheral wall is provided with a receiving groove, and the reflective protrusion is received in the receiving groove.

4. The light guide component as described in claim 1, characterized in that, The reflective surface is a wavy surface consisting of multiple connected curved surfaces, with the curved surfaces bulging towards the side away from the refractive surface.

5. The light guide component as described in claim 1, characterized in that, A reference plane λ is defined perpendicular to the main light output direction of the light guide component, and the reference plane λ is set on the light output side of the light guide component; The angle between the reflecting surface and the reference surface λ is an obtuse angle.

6. The light guide component as described in claim 1, characterized in that, The angle between the refracting surface and the main light-emitting direction is α, which satisfies: 1°≤α≤3°.

7. The light guide component as described in claim 1, characterized in that, At least two reflective bumps are sequentially provided along the main light-emitting direction of the light guide component; The peripheral wall of the reflective pattern is designated as the first surface. The minimum distance from the end of the reflective surface of the reflective protrusion away from the first surface to the first surface gradually increases in the main light-emitting direction of the light guide component.

8. A vehicle light, characterized in that, Includes the light guide component as described in any one of claims 1 to 7.

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