Light guide element, light-emitting assembly, and motor vehicle

Abstract

A light guide element (100), comprising: a first end (10) and a second end, (20) arranged opposite to each other, the light guide element (100) extending from the first end (10) to the second end (20) along the length direction (L) of the light guide element; a light incident surface (30), connected between the first end (10) and the second end (20), the light incident surface (30) being configured to receive light; a light exit surface (40), connected between the first end (10) and the second end (20) and arranged opposite to the light incident surface (30), the light exit surface (40) being configured to emit at least part of light received by the light incident surface (30); and a guide portion (50), connected between the light incident surface (30) and the light exit surface (40) and between the first end (10) and the second end (20), the guide portion (50) being configured to guide at least part of the light received by the light incident surface (30) to the light exit surface (40), wherein a light adjusting structure (60) is provided on the guide portion (50), and the light adjusting structure (60) is configured to guide at least part of light propagating in the guide portion (50) to the outside of the light guide element (100) without passing through the light exit surface (40).

Description

Light guide elements, light-emitting components and motor vehicles Technical Field

[0001] This application relates to the field of lighting technology, and more specifically, to a light guide element, a light-emitting assembly, and a motor vehicle. Background Technology

[0002] In the field of lighting technology, various lighting or signaling devices are known for providing light for illumination or signal indication. For example, vehicle lights are used in motor vehicles to provide lighting or signaling functions to ensure safe driving or to provide decorative functions.

[0003] As an optical element, light guides are often used in vehicle headlights to direct light from a light source to a desired position or direction. However, due to the irregular shape of a vehicle body, when light guides are installed, the light emitted by the light guides often fails to create a uniform illumination effect on the vehicle body.

[0004] Therefore, designing a new light guide element that can uniformly illuminate irregular car bodies is an urgent need. Summary of the Invention

[0005] One objective of this application is to overcome at least one of the problems and defects existing in the prior art.

[0006] The first aspect of this application provides a light guide element, comprising:

[0007] With the first and second ends positioned opposite each other, the light guide element extends from the first end to the second end along its length direction;

[0008] An incident light surface is connected between the first end and the second end, and the incident light surface is configured to receive light.

[0009] A light-emitting surface, connected between the first end and the second end, and disposed opposite to the light-incident surface, is configured to emit at least a portion of the light received by the light-incident surface; and

[0010] A guide portion is connected between the light-incident surface and the light-exiting surface, and between the first end and the second end, the guide portion being configured to guide at least a portion of the light received by the light-incident surface to the light-exiting surface;

[0011] The guide portion is provided with a dimming structure, which is configured to guide at least a portion of the light propagating in the guide portion to the outside of the light guide element and avoid the light emitting surface.

[0012] In some embodiments, the light-incident surface is configured to receive light emitted from the light source assembly;

[0013] The light-emitting surface is configured to emit at least a portion of the light received by the light-incident surface to the target component;

[0014] The light rays, guided by the dimming structure and emanating from the light-emitting surface, avoid the target component.

[0015] In some embodiments, the number of dimming structures is multiple, and the multiple dimming structures are spaced apart on the guide portion along the length direction;

[0016] The greater the distance between the light-emitting surface and the target component, the smaller the size of the dimming structure, the less light leaks through the dimming structure, and the more light is emitted from the light-emitting surface.

[0017] In some embodiments, the light-incident surface includes a plurality of sub-light-incident portions, which are spaced apart along the length direction;

[0018] The plurality of dimming structures and the plurality of sub-light-incident sections are arranged in a one-to-one correspondence.

[0019] In some embodiments, the light source assembly includes a circuit board and a plurality of light sources (220), the plurality of light sources being spaced apart on the circuit board;

[0020] The plurality of light sources and the plurality of sub-light incident parts are arranged in a one-to-one correspondence.

[0021] In some embodiments, the guide portion includes a first side and a second side disposed opposite to each other, the first side and the second side being connected between the light-incident surface and the light-exit surface, and between the first end and the second end;

[0022] The dimming structure is a recessed structure formed on the first side, and the recessed structure extends from the first side toward the interior of the guide portion;

[0023] The dimming structure is configured to change the path of light propagation in the guide by refracting light.

[0024] In some embodiments, the dimming structure includes a first optical surface and a second optical surface that are interconnected;

[0025] The first optical surface is configured to directly emit a first portion of the light received by the incident surface to the outside of the light guide element, while avoiding the light emitting surface;

[0026] The first optical surface is configured to guide a second portion of the light received by the incident surface to the second optical surface;

[0027] The second optical surface is configured to guide a portion of the light it receives to the second side surface, which, after being reflected by the second side surface, leaks from the first side surface to the outside of the light guide element and avoids the light-emitting surface;

[0028] The second optical surface is configured to guide another portion of the light it receives to the first side surface, which then reflects the light and exits from the light-emitting surface.

[0029] In some embodiments, the light guide element further includes a mounting structure disposed on the light incident surface, the mounting structure being configured to position the light source assembly;

[0030] The light guide element is a single piece.

[0031] In some embodiments, the light guide element includes a plurality of positioning holes disposed between adjacent dimming structures for mounting and positioning the light guide element with other components.

[0032] In some embodiments, the portion of the light-incident surface near the second end is configured to receive a first light emitted from the end light source;

[0033] The second end includes a first sub-end face, which is connected to the light-emitting surface. The angle between the first sub-end face and the light-emitting surface is an obtuse angle or an acute angle.

[0034] The first sub-end face does not reflect the first light ray, and along the length direction, the first light ray illuminates a wider area than the light guide element.

[0035] In some embodiments, the angle between the first sub-end face and the light-emitting surface is an obtuse angle, the first sub-end face is configured to directly emit a portion of the first light beam to the outside, a portion of the first light beam is emitted from the light-emitting surface to the outside, and the first light beam uniformly illuminates the area around the second end.

[0036] The first sub-end face is a plane, and the second end also includes a second sub-end face connected to the first sub-end face; or the first sub-end face is a convex curved surface.

[0037] In some embodiments, the second sub-end face is connected to the light-incident surface; or

[0038] The second end also includes a third sub-end face, which is connected between the light-incident surface and the second sub-end face, and the third sub-end face is a concave curved surface.

[0039] In some embodiments, the angle between the first sub-end face and the light-emitting surface is an acute angle, and most of the first light ray is emitted directly from the light-emitting surface to the outside.

[0040] The second end also includes a second sub-end face, which connects the light-incident surface and the first sub-end face, and the second sub-end face is configured to either emit the first light ray or reflect the first light ray.

[0041] The area of ​​the first sub-end face is larger than the area of ​​the second sub-end face, and the first sub-end face is configured to guide the light emitted from the second sub-end face into the guide portion, and then emit it through the light-emitting surface;

[0042] The first light beam evenly illuminates the area surrounding the second end.

[0043] A second aspect of this application provides a light-emitting component for a motor vehicle, comprising a light guide element as provided in the first aspect and the embodiments described above.

[0044] In some embodiments, the light-emitting component further includes a light source component;

[0045] The light source assembly includes a circuit board and multiple light sources. The circuit board is elongated, and the multiple light sources are spaced apart on the circuit board along its length. The multiple light sources are used to emit light.

[0046] The light-emitting component is used as interior lights, brake lights, or taillights of a motor vehicle.

[0047] A third aspect of this application provides a motor vehicle that includes a light guide element as provided in the first aspect and the above embodiments, or a light-emitting component as provided in the second aspect and the above embodiments. Attached Figure Description

[0048] Figure 1a shows a three-dimensional structural schematic diagram of the light guide element provided in an embodiment of this application.

[0049] Figure 1b shows a front view of the light guide element shown in Figure 1a.

[0050] Figure 1c shows a cross-sectional view along line A1-A1 of the light guide element shown in Figure 1b.

[0051] Figure 2a shows a front view of the light-emitting component provided in an embodiment of this application.

[0052] Figure 2b shows a cross-sectional view along line A2-A2 of the light-emitting component shown in Figure 2a.

[0053] Figure 2c shows a partial enlarged view B of the light-emitting component shown in Figure 2a.

[0054] Figure 3a shows a partial structural diagram of a motor vehicle.

[0055] Figure 3b shows a cross-sectional view along line A3-A3 of the motor vehicle shown in Figure 3a.

[0056] Figure 3c shows a partial enlarged view (C) of the motor vehicle shown in Figure 3b.

[0057] Figure 4 shows the optical path diagram of the second end of the light guide element shown in Figure 2a.

[0058] Figure 5 shows the optical path diagram of the second end of the light guide element provided in the reference embodiment of this application.

[0059] Figure 6 shows the optical path diagram of the second end of the light guide element provided in the first modified embodiment of this application.

[0060] Figure 7 shows the optical path diagram of the second end of the light guide element provided in the second modified embodiment of this application.

[0061] Figure 8 shows the optical path diagram of the second end of the light guide element provided in the third modified embodiment of this application.

[0062] Figure 9 shows the optical path diagram of the second end of the light guide element provided in the fourth modified embodiment of this application.

[0063] Figure 10 shows the optical path diagram of the second end of the light guide element provided in the fifth modified embodiment of this application.

[0064] Figure 11 shows the optical path diagram of the second end of the light guide element provided in the sixth modified embodiment of this application. Detailed Implementation

[0065] The embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the embodiments of this application are primarily intended to illustrate possible implementations of the technical solutions of this application and should not be construed as limiting the technical solutions of this application. In this specification, identical or similar components are indicated by identical or similar reference numerals.

[0066] Figure 1a shows a three-dimensional structural schematic diagram of the light guide element 100 provided in an embodiment of this application. Figure 1b shows a front view of the light guide element 100 shown in Figure 1a. Figure 1c shows an enlarged cross-sectional view of the light guide element 100 shown in Figure 1b along line A1-A1.

[0067] As shown in Figures 1a-1c, embodiments of this application provide a light guide element 100. The light guide element 100 has an overall elongated, plate-like structure for guiding received light to a target location. The light guide element 100 can be a single piece, for example, it can be a planar light guide plate integrally injection molded. The light guide element 100 includes a first end 10 and a second end 20 disposed opposite to each other, a light-incident surface 30, a light-emitting surface 40, and a guiding portion 50. The light guide element 100 extends from the first end 10 to the second end 20 along its length direction L. The light-incident surface 30 is connected between the first end 10 and the second end 20 and is configured to receive light. The light-emitting surface 40 is connected between the first end 10 and the second end 20 and is disposed opposite to the light-incident surface 30 along the height direction H of the light guide element 100. The light-emitting surface 40 is configured to emit at least a portion of the light received by the light-incident surface 30, and the light-emitting direction of the light guide element 100 is approximately along the height direction H. The guide portion 50 is connected between the light-incident surface 30 and the light-exiting surface 40, and between the first end 10 and the second end 20. The guide portion 50 is configured to guide at least a portion of the light received by the light-incident surface 30 to the light-exiting surface 40, and then the light-exiting surface 40 emits this portion of light to the outside of the light guide element 100. The guide portion 50 is provided with a dimming structure 60, which is configured to guide at least a portion of the light propagating in the guide portion 50 to the outside of the light guide element 100, avoiding the light-exiting surface 40.

[0068] In this embodiment, the dimming structure 60 leaks some light to the outside of the light guide element 100. This leaked light does not reach or pass through the light-emitting surface 40, but is emitted directly from the guide portion 50 to the outside of the light guide element 100, thereby reducing the useful light emitted from the light-emitting surface 40. When the light guide structure 100 is used to illuminate a target component, even if the target component has an irregular shape, resulting in inconsistent distances between the light guide structure 100 and the target component, the dimming structure 60 can still uniformly illuminate the target component, achieving a better illumination effect.

[0069] Figure 2a shows a front view of the light-emitting component 500 provided in an embodiment of this application. Figure 2b shows a cross-sectional view of the light-emitting component 500 shown in Figure 2a along line A2-A2. Figure 2c shows a partial enlarged view B of the light-emitting component 500 shown in Figure 2a.

[0070] As shown in Figures 2a-2c, the light guide element 100 can be used in the light-emitting assembly 500 of a motor vehicle. This light-emitting assembly 500 can be used as an interior light, brake light, or taillight. When used as an interior light, it can be installed on the door panel, dashboard, or ceiling of the motor vehicle to illuminate the passenger cabin. In addition to the light guide element 100, the light-emitting assembly 500 in this embodiment also includes a light source assembly 200. The light source assembly 200 includes a circuit board 210 and a plurality of light sources 220. The circuit board 210 is elongated and is positioned on the upper side of the elongated light guide element 100. The plurality of light sources 220 are spaced apart along the length direction of the circuit board 210 on the lower side of the circuit board 210. The length direction of the circuit board 210 is the same as the length direction H of the light guide element 100.

[0071] In addition, the light guide element 100 also includes a mounting structure 70, which may include a positioning post 71 and a positioning boss 72. The mounting structure 70 is disposed on the light incident surface 30 and is configured to position the light source assembly 200. Specifically, the circuit board 210 is provided with positioning holes, and the positioning post 71 and positioning boss 72 in the mounting structure 70 can be connected to the positioning holes to install the light source assembly 200 onto the light guide element 100.

[0072] Circuit board 210 can be electrically connected to an external drive module and an external power supply module to provide control signals and power signals to multiple light sources 220. The multiple light sources 220 emit light according to the received control signals to achieve the lighting effect of the target. The light sources 220 can be monochrome or RGB light sources, and multiple light sources 220 can achieve a flowing light effect.

[0073] Figure 3a shows a partial structural schematic diagram of the motor vehicle 600. Figure 3b shows a cross-sectional view of the motor vehicle 600 shown in Figure 3a along line A3-A3. Figure 3c shows a partial enlarged view (C) of the motor vehicle 600 shown in Figure 3b.

[0074] As shown in Figures 2a-3c, in the optical path, the light-incident surface 30 of the light guide element 100 is configured to receive light emitted from the plurality of light sources 220 in the light source assembly 200. The light-exiting surface 40 is configured to emit at least a portion of the light received by the light-incident surface 30 to the target component 620. The target component 620 may be, for example, a door panel, dashboard, or ceiling in the passenger compartment of a motor vehicle. The light emitted by the dimming structure 60 and avoiding the light-exiting surface 40 will avoid the target component 620; that is, this portion of the leaked light will not reach the target component 620 and will not affect the lighting effect. Due to the irregular shape of the target component 620 or other components of the motor vehicle on which the ambient light 500 is mounted, such as the mounting plate 610, the distance between the light-exiting surface 40 and the target component 620 is inconsistent. For example, along the length direction of the light guide element 100, i.e., from left to right in Figure 2a, the distance between the light-exiting surface 40 and the target component 620 gradually increases from d1 to d2. If the light emitted from the light-emitting surface 40 is uniform, the light reflected from the target component 620 into the passenger compartment of the vehicle will be uneven due to the varying distances from the target component 620. Therefore, in this embodiment, by setting dimming structures 60 of different sizes, the light emitted from the light-emitting surface 40 can be flexibly adjusted so that although the light emitted from the light-emitting surface 40 is uneven, it can still evenly illuminate the target component 620. The light reflected from the target component 620 can then further evenly illuminate the interior of the passenger compartment of the vehicle.

[0075] As shown in Figures 2a and 2c, in this embodiment, there are multiple dimming structures 60, which are spaced apart along the length direction H in the guide portion 50. For example, in a portion on the left side of the light guide element 100, the distance between the light-emitting surface 40 and the target component 620 increases from left to right, allowing the size of the dimming structure 60 to decrease. This results in less light leakage guided by the dimming structure 60 and more light emitted from the light-emitting surface 40. Although the light emitted from the portion near the left side of the light-emitting surface 40 is uneven, with the light intensity gradually increasing from left to right, the light emitted from this portion can evenly illuminate the target component 620 because the distance from the target component 620 gradually increases from left to right. When the distance between the light-emitting surface 40 and the target component 620 is approximately the same, for example, on a portion of the right side of the light guide element 100, the dimming structure 60 may not be provided. In this way, light can be uniformly emitted from that portion of the right side of the light-emitting surface 40 and uniformly illuminate that portion of the right side of the target component 620. This achieves uniform illumination of the target component 620 as a whole.

[0076] As shown in Figure 1b, the light-incident surface 30 includes a plurality of sub-light-incident sections 31, which are spaced apart along the length direction L. As shown in Figures 2a-2b, the plurality of light sources 220 and the plurality of sub-light-incident sections 31 are arranged in a one-to-one correspondence. The plurality of dimming structures 60 and some of the sub-light-incident sections 31 near the left side are arranged in a one-to-one correspondence.

[0077] The following details the structural features of the dimming structure 60.

[0078] As shown in Figure 2c, the guide portion 50 includes a first side surface 51 and a second side surface 52 disposed opposite each other along the width direction W of the light guide element 100. The length direction L, height direction H, and width direction W of the light guide element 100 are orthogonal to each other. The first side surface 51 and the second side surface 52 are connected between the light-incident surface 30 and the light-exit surface 40, and between the first end 10 and the second end 20. The dimming structure 60 is a recessed structure formed on the first side surface 51, which extends from the first side surface 51 toward the interior of the guide portion 50. The cross-section of the dimming structure 60 along the width direction W is approximately trapezoidal, and the dimming structure 60 is configured to change the path of light propagation in the guide portion 50 by refracting light.

[0079] Specifically, the dimming structure 60 includes a first optical surface 61 and a second optical surface 62 interconnected by short sides. The first optical surface 61 is configured to directly emit a first portion R1 of the light received by the incident surface 30 to the outside of the light guide element 100, avoiding the light emitting surface 40. This first portion of light R1 leaks out directly without reaching the target element 620. The first optical surface 61 is also configured to guide a second portion R21 and R22 of the light received by the incident surface 30 to the second optical surface 62. The second optical surface 62 is configured to guide a portion of the light it receives, such as light R21, to a second side surface 62. This portion of light R21 is reflected by the second side surface 62 and leaks from the first side surface 61 to the outside of the light guide element 100, avoiding the light emitting surface 40. This portion of light R21 leaks out directly without reaching the target element 620. The second optical surface 62 is also configured to guide another portion of the light rays R22 received therefrom to the first side surface 61. This portion of light rays R22 is reflected by the first side surface 61 and emitted from the light-emitting surface 40 to illuminate the target component 620.

[0080] As shown in Figure 1b, in some embodiments, the light guide element 100 may include a plurality of positioning holes 80 for mounting and positioning the light guide element 100 with other components. The positioning holes 80 may be, for example, threaded holes. The plurality of positioning holes 80 are distributed along the length L of the light guide element 100 on the guide portion 50. The positioning holes 80 are located between adjacent light sources 220 in the length L direction, and the light emitted from the light source 220 is transmitted to the light-emitting surface 40 through the guide portion 50 between adjacent positioning holes 80.

[0081] As shown in Figures 2a-2c, embodiments of this application also provide a light-emitting component 500 for a motor vehicle, which includes the light guide element 100 described in any of the above embodiments.

[0082] In some embodiments, the light-emitting component 500 further includes a light source component 200. The light source component 200 includes a circuit board 210 and a plurality of light sources 220. The circuit board 210 is elongated, and the plurality of light sources 220 are spaced apart on the circuit board along the length direction of the circuit board 210. The plurality of light sources are used to emit light.

[0083] As shown in Figures 3a-3c, embodiments of this application also provide a motor vehicle 600, which includes a light guide element 100 as described in any of the above embodiments, or a light-emitting component 500 as described in any of the above embodiments.

[0084] The motor vehicle 600 includes a mounting plate 610 and a target component 620, which is the target to be illuminated as described in the above embodiments. The light-emitting component 500 is used to illuminate the target component 620 of the motor vehicle 600, and the light is reflected by the target component 620 and emitted into the vehicle cabin to illuminate or decorate the interior of the motor vehicle 600.

[0085] This application also provides several modified embodiments, in which the light guide element 100 may include a dimming structure 60 similar to the embodiments described above, or it may not include a dimming structure 60. These modified embodiments of the light guide element 100 include an improved second end 20 structure, which effectively improves the uniformity of light emitted near the second end 20. A detailed description follows.

[0086] Figure 4 shows the optical path diagram of the second end 20 of the light guide element 100 shown in Figure 2a. Figure 5 shows the optical path diagram of the second end 20 of the light guide element 100 provided in the embodiment of this application.

[0087] As shown in Figure 5, in the reference embodiment, the end face of the second end 20 is perpendicular to the light-incident surface 30 and the light-outceasing surface 40. The portion of the light-incident surface 30 near the second end 20 receives the first light emitted by the end light source 220. A portion of the first light is emitted directly from the light-outceasing surface 40, and the other portion is reflected by the end face of the second end 20 and emitted from the portion of the light-outceasing surface 40 near the second end 20. This results in the light being too bright in the adjacent area on the left side of the second end 20, while the adjacent area on the right side of the second end 20 suddenly becomes dark, and the uniformity of light emitted by the entire light guide element 100 is poor.

[0088] To further improve this technical problem, as shown in Figure 4, the shape of the end face of the second end 20 was changed, thereby reducing the amount of reflected light from the second end 20. This reduces the light output from the adjacent area on the left side of the second end 20 and increases the light output from the adjacent area on the right side of the second end, improving the overall light output uniformity of the light guide element 100. Here, "left side" refers to the side of the second end 20 closer to the first end 10, and "right side" refers to the side of the second end 20 farther from the first end 10.

[0089] Specifically, the portion of the light-incident surface 30 near the second end 20 is configured to receive the first light emitted from the end light source 220. The second end 20 includes a first sub-end face 21, a second sub-end face 22, and a third sub-end face 23. The first sub-end face 21 is connected to the light-emitting surface 40, the second sub-end face 22, and the third sub-end face 23 is connected between the second sub-end face 22 and the light-incident surface 30. The angle between the first sub-end face 21 and the light-emitting surface 40 is obtuse, and the first sub-end face 21 is a plane. The first sub-end face 21 does not reflect the first light; part of the first light is emitted directly from the light-emitting surface 40 to the outside, and part of the first light is emitted to the outside through the first sub-end face 21. Along the length direction L, the first light illuminates a wider area than the light guide element 100, that is, it also illuminates the adjacent area on the right side of the second end 20; the first light evenly illuminates the area around the second end 20. The second sub-end face 22 is a plane, and the third sub-end face 23 can be set to be a concave curved surface, which can further reduce the light reflected by the third sub-end face 23.

[0090] This allows the emitted light to have a larger angle, thereby increasing the illumination area of ​​the light guide element 100; and reduces the reflected light at the second end 20 of the light guide, preventing the second end from being too bright and improving the uniformity of the light guide end.

[0091] Figure 6 shows the optical path diagram of the second end 20 of the light guide element 100 provided in the first modified embodiment of this application. Figure 7 shows the optical path diagram of the second end 20 of the light guide element 100 provided in the second modified embodiment of this application.

[0092] As shown in Figures 6-7, in the first and second modified embodiments, the second end 20 only includes the first sub-end face 21 and the second sub-end face 22, and does not include the third sub-end face 23. The first sub-end face 21 is connected to the light-emitting surface 40, and the second sub-end face 22 is connected between the light-incident surface 30 and the first sub-end face 21. The first sub-end face 21 can directly emit light, reducing the brightness on the left side of the second end 20 and increasing the illumination range on the right side of the second end 20. The second sub-end face 22 in Figure 6 is a plane. The second sub-end face 22 in Figure 7 is a curved surface, and the first sub-end face 21 and the light-emitting surface 40 are connected by an arc transition.

[0093] Figure 8 shows the optical path diagram of the second end 20 of the light guide element 100 provided in the third modified embodiment of this application.

[0094] As shown in Figure 8, in the third modified embodiment, the second end 20 only includes the first sub-end face 21 and does not have a second sub-end face or a third sub-end face, and the first sub-end face 21 is a convex curved surface. The first light ray is emitted directly from the light-emitting surface 40 and the first sub-end face 21, which can further expand the illumination width of the light guide element 100.

[0095] Figure 9 shows the optical path diagram of the second end 20 of the light guide element 100 provided in the fourth modified embodiment of this application. Figure 10 shows the optical path diagram of the second end 20 of the light guide element 100 provided in the fifth modified embodiment of this application. Figure 11 shows the optical path diagram of the second end 20 of the light guide element 100 provided in the sixth modified embodiment of this application.

[0096] As shown in Figures 9-11, in the fourth to sixth modified embodiments, the second end 20 includes a first sub-end face 21 and a second sub-end face 22 connected to each other. The first sub-end face 21 is connected to the light-emitting surface 40, and the second sub-end face 22 is connected to the light-receiving surface 30. The angle between the first sub-end face 21 and the light-emitting surface 40 is an acute angle, and most of the first light ray is emitted directly from the light-emitting surface 40 to the outside. The area of ​​the first sub-end face 21 is larger than the area of ​​the second sub-end face 22, and the first sub-end face 21 does not reflect the first light ray, so that the first light ray uniformly illuminates the area around the second end 20.

[0097] In Figures 9 and 10, the angle between the second sub-end face 22 and the incident light surface 30 is an acute angle, and most of the first light rays are emitted directly from the emitting light surface 40 to the outside. A small portion of the first light rays are emitted from the second sub-end face 22 and guided through the first sub-end face 21 into the guide portion 50, and then emitted through the emitting light surface 40. The first sub-end face 21 does not reflect light, which can significantly reduce the amount of reflection of the first light rays, thereby significantly weakening the bright spot on the left side of the second end 20 and improving the uniformity of light emission. In Figure 9, both the first sub-end face 21 and the second sub-end face 22 are planar. In Figure 10, both the first sub-end face 21 and the second sub-end face 22 are curved surfaces.

[0098] In Figure 11, the angle between the second sub-end face 22 and the incident light surface 30 is a right angle, and both are planes. Most of the first light rays exit directly from the emitting light surface 40, while a small portion of the first light rays are reflected by the second sub-end face 22 and exit from the emitting light surface 40 or are reflected again by the emitting light surface 40. The first sub-end face 21 does not reflect light, and because the area of ​​the second sub-end face 22 is much smaller than that of the first sub-end face 21, very little light is reflected by the second sub-end face 22, which significantly reduces the amount of first light ray reflected; and only a portion of the reflected light exits from the emitting light surface 40. This significantly reduces the bright spot on the left side of the second end 20 and improves the uniformity of light emission.

[0099] Although this application has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of this application and should not be construed as limiting this application. The dimensions and proportions in the drawings are merely illustrative and should not be construed as limiting this application.

[0100] While some embodiments of the general concept of this application have been shown and described, those skilled in the art will understand that this application may include many other equivalent embodiments without departing from the general inventive concept of this application, and the scope of protection of this application is defined by the claims.

Claims

1. A light guide element (100), characterized in that, include: The light guide element extends from the first end (10) to the second end along its length direction (L) between the first end (10) and the second end (20) which are respectively arranged opposite to each other; An incident light surface (30) is connected between the first end and the second end, and the incident light surface is configured to receive light. An emitting surface (40) is connected between the first end and the second end and is disposed opposite to the incident surface. The emitting surface is configured to emit at least a portion of the light received by the incident surface. as well as A guide portion (50) is connected between the light-incident surface and the light-exiting surface, and between the first end and the second end, the guide portion being configured to guide at least a portion of the light received by the light-incident surface to the light-exiting surface; The guide portion is provided with a dimming structure (60), which is configured to guide at least a portion of the light propagating in the guide portion to the outside of the light guide element and avoid the light emitting surface.

2. The light guide element according to claim 1, wherein, The light-incident surface is configured to receive light emitted from the light source assembly (200); The light-emitting surface is configured to emit at least a portion of the light received by the light-incident surface to the target (620); The light rays, guided by the dimming structure and emanating from the light-emitting surface, avoid the target component.

3. The light guide element according to claim 2, wherein, The dimming structure is a plurality of dimming structures, which are spaced apart along the length direction on the guide portion; The greater the distance between the light-emitting surface and the target component, the smaller the size of the dimming structure, the less light leaks through the dimming structure, and the more light is emitted from the light-emitting surface.

4. The light guide element according to claim 3, wherein, The light-incident surface includes a plurality of sub-light-incident portions (31), which are spaced apart along the length direction; The plurality of dimming structures and the plurality of sub-light-incident sections are arranged in a one-to-one correspondence.

5. The light guide element according to claim 4, wherein, The light source assembly includes a circuit board (210) and a plurality of light sources (220), the plurality of light sources being spaced apart on the circuit board; The plurality of light sources and the plurality of sub-light incident parts are arranged in a one-to-one correspondence.

6. The light guide element according to any one of claims 1 to 5, wherein, The guide portion includes a first side surface (51) and a second side surface (52) disposed opposite to each other, the first side surface and the second side surface being connected between the light-incident surface and the light-exit surface, and between the first end and the second end; The dimming structure is a recessed structure formed on the first side, and the recessed structure extends from the first side toward the interior of the guide portion; The dimming structure is configured to change the path of light propagation in the guide by refracting light.

7. The light guide element according to claim 6, wherein, The dimming structure includes a first optical surface (61) and a second optical surface (62) that are interconnected; The first optical surface is configured to directly emit a first portion (R1) of the light received by the incident surface to the outside of the light guide element, while avoiding the light emitting surface; The first optical surface is configured to guide a second portion (R21, R22) of the light received by the incident surface to the second optical surface; The second optical surface is configured to guide a portion (R21) of the light it receives to the second side surface, which, after being reflected by the second side surface, leaks from the first side surface to the outside of the light guide element and avoids the light emitting surface; The second optical surface is configured to guide another portion (R22) of the light it receives to the first side surface, and after being reflected by the first side surface, it is emitted from the light-emitting surface.

8. The light guide element according to any one of claims 1 to 5, wherein, The light guide element further includes a mounting structure (70), which is disposed on the light incident surface and is configured to position the light source assembly; The light guide element is a single piece.

9. The light guide element according to any one of claims 1 to 5, wherein, The light guide element includes a plurality of positioning holes (80), which are disposed between adjacent dimming structures for mounting and positioning the light guide element with other components.

10. The light guide element according to any one of claims 1 to 5, wherein, The portion of the light-incident surface (30) near the second end (20) is configured to receive the first light emitted by the end light source (220); The second end (20) includes a first sub-end face (21), which is connected to the light-emitting surface. The angle between the first sub-end face (21) and the light-emitting surface (40) is an obtuse angle or an acute angle. The first sub-end face does not reflect the first light ray, and along the length direction, the first light ray illuminates a wider area than the light guide element.

11. The light guide element according to claim 10, wherein, The angle between the first sub-end face (21) and the light-emitting surface (40) is an obtuse angle. The first sub-end face is configured to directly emit a portion of the first light beam to the outside, and a portion of the first light beam is emitted from the light-emitting surface to the outside. The first light beam evenly illuminates the area around the second end. The first sub-end face is a plane, and the second end also includes a second sub-end face (22) connected to the first sub-end face; or the first sub-end face is a convex curved surface.

12. The light guide element according to claim 11, wherein, The second sub-end face is connected to the light-incident surface; or The second end also includes a third sub-end face (23), which is connected between the light-incident surface and the second sub-end face, and the third sub-end face is a concave curved surface.

13. The light guide element according to claim 10, wherein, The angle between the first sub-end face (21) and the light-emitting surface (40) is an acute angle, and most of the first light ray is emitted directly from the light-emitting surface to the outside; The second end also includes a second sub-end face (22), the second sub-end face connecting the light-incident surface and the first sub-end face, the second sub-end face being configured as a portion emitting the first light ray or a portion reflecting the first light ray; The area of ​​the first sub-end face is larger than the area of ​​the second sub-end face. The first sub-end face is configured to guide the light emitted from the second sub-end face into the guide portion (50) and then emit it through the light-emitting surface. The first light beam evenly illuminates the area surrounding the second end.

14. A light-emitting component (500) for a motor vehicle, characterized in that, The light-emitting component includes a light guide element (100) according to any one of claims 1-3; and A light source assembly (200) includes a circuit board (210) and a plurality of light sources (220). The circuit board is elongated, and the plurality of light sources are spaced apart on the circuit board along the length of the circuit board. The plurality of light sources are used to emit light. The light-emitting component is used as interior lights, brake lights, or taillights of a motor vehicle.

15. A motor vehicle (600), characterized in that, The motor vehicle includes a light guide element (100) according to any one of claims 1-13, or a light-emitting component (500) according to any one of claims 14.

Images