Light guide member, vehicle lamp and vehicle

Abstract

The present application relates to vehicle lamps. Disclosed is a light guide member, comprising a light guide member body and an optical surface arranged on the light guide member body, wherein light distribution patterns are provided on the optical surface, and the light distribution patterns comprise first strip-shaped patterns, second strip-shaped patterns and third strip-shaped patterns; the light distribution patterns comprise a first width end and a second width end; end point A1 to end point Ai are correspondingly connected to end point B1 to end point Bi on a one-to-one basis, respectively, to form the first strip-shaped patterns; end point Aj to end point Am are correspondingly connected to end point Bk to end point Bn on a one-to-one basis, respectively, to form the second strip-shaped patterns; and at least one third strip-shaped pattern is provided between end point Bi and end point Bk, and one end of each third strip-shaped pattern is located on a connecting line between end point Aj and end point Bk; or at least one third strip-shaped pattern is provided between end point Bi and end point Bk, and one end of each third strip-shaped pattern is located on a connecting line between end point Ai and end point Bi. In addition, further disclosed in the present application are a vehicle lamp and a vehicle. The light guide member in the present application has an attractive appearance and a complete and uniform lighting effect.

Description

Light guide, vehicle lamp and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Chinese patent application No. 202410400726.8 filed on April 3, 2024, the contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to a vehicle lamp, and in particular to a light guide. In addition, the present application also relates to a vehicle lamp and a vehicle. Background Art

[0004] Currently, traditional headlight optical patterns redistribute the energy of incident light, creating a light pattern that meets regulatory requirements. The resulting lighting effect is a uniform optical surface. In existing headlight designs, there are three common solutions to achieve uniform lighting: first, by selecting specific light guide materials (such as scattering materials); second, by adding leather grain to the light guide surface; and third, by adding regular patterns such as fisheyes or horizontal and vertical stripes to the light guide surface.

[0005] Regarding the third technical solution described above, if the optical surface of the light guide has a uniform width along the length direction or a small width difference, then as shown in FIG1 , the area difference between individual first pattern units 6 will not be large. However, if the optical surface of the light guide has a large width difference along the length direction, specifically, a difference of 1.5 times or even more than twice, as shown in FIG2 , the area difference between individual second pattern units 7 may reach more than twice, and this difference in the area of ​​the second pattern units 7 will lead to a decrease in the uniformity of light after passing through the optical surface. In order to make the light emission more uniform, the size of most of the individual second pattern units 7 needs to be as uniform as possible. However, in the case of unequal widths of the optical surfaces, some of the second pattern units 7 will be cut off by the boundaries of the optical surfaces, as shown in FIG3 , which shows an undesired pattern unit shape formed after the third pattern unit 8 is cut off by the outer boundary of the optical surface in the area near the outer boundary of the optical surface at the right corner of the optical surface. This part of the third pattern unit 8 can be seen from the outside of the headlight, which seriously affects the appearance quality of the headlight. Moreover, when the headlight is on, the lighting effect of the optical surface boundary area is poor. In the prior art, when the headlight is not on, the surface of the optical surface boundary area is sprayed with black paint or leather grain is added to make the part of the light guide opaque to cover up the appearance defects. However, when the headlight is on, the lighting effect of the optical surface of the light guide is uneven and does not have a complete lighting effect that matches the headlight design.

[0006] For the above reasons, it is difficult in the existing technology to effectively ensure that when regular pattern units are set on an optical surface with large width differences, the appearance defects when the headlights are not lit are avoided while the optical surface has a complete and uniform lighting effect. Summary of the Invention

[0007] The problem to be solved in the first aspect of the present application is to provide a light guide, which is provided with at least one set of pattern units with a complete structure in the boundary area of ​​the optical surface, so that the light guide of the present application has a complete and uniform lighting effect without increasing the cost.

[0008] The problem to be solved in the second aspect of the present application is to provide a vehicle lamp with a simple structure, a complete and uniform lighting effect, and a better appearance.

[0009] In addition, the problem to be solved in the third aspect of the present application is to provide a vehicle whose headlights have a simple structure, a better appearance, and a complete and uniform lighting effect.

[0010] In order to solve the above technical problems, the present application provides a light guide in a first aspect, comprising a light guide body and an optical surface provided on the light guide body, wherein the optical surface is provided with a light distribution pattern, the light distribution pattern comprising at least one first stripe pattern, at least one second stripe pattern, and at least one third stripe pattern;

[0011] The light distribution pattern includes a first width end and a second width end, endpoints A1, A2, ..., A2 are arranged at the second width end and are arranged in sequence along the width direction of the second width end. i 、A j ...A m , and endpoints B1, B2...B arranged at the first width end and arranged in sequence along the width direction of the first width end i ...B k ...B n , the endpoint A1 to the endpoint A i From the endpoint B1 to the endpoint B i One-to-one connection forms the first stripe pattern, the endpoint A j To the endpoint A m respectively with the endpoint B k To the endpoint B n The second stripe pattern is formed by connecting them in a one-to-one correspondence, wherein n, m, k, i, and j are all natural numbers, i≤j, n>m, i≥2, mj≥1, or nk≥1;

[0012] The endpoint B i To the endpoint B kThere is at least one third strip pattern between the two ends of the third strip pattern, one end of which is located at the end point A. j To the endpoint B k or, the endpoint B i To the endpoint B k There is at least one third strip pattern between the two ends of the third strip pattern, one end of which is located at the end point A. i To the endpoint B i On the connection line.

[0013] Preferably, the light distribution pattern further includes a plurality of pattern dividing lines, and each of the pattern dividing lines intersects with the first strip pattern, the second strip pattern, and the third strip pattern to form a plurality of pattern units.

[0014] Preferably, each of the pattern units is at least one of a fisheye pattern, a pyramid pattern, and a polyhedron pattern.

[0015] Preferably, the widths of the first strip patterns are equal; the widths of the second strip patterns are equal; or

[0016] The widths of the first strip patterns and the second strip patterns are equal.

[0017] Preferably, the widths of the first strip pattern, the second strip pattern and the third strip pattern are all equal.

[0018] Preferably, the first strip pattern is located on the outside of the optical surface, the second strip pattern is located on the inside of the optical surface, the third strip pattern is located between the first strip pattern and the second strip pattern, the boundary of the first strip pattern on the outermost side of the optical surface coincides with the outer boundary of the optical surface; and / or, the boundary of the second strip pattern on the innermost side of the optical surface coincides with the inner boundary of the optical surface.

[0019] Preferably, the first width D of the first width end is the maximum width of the light distribution pattern, and the second width F of the second width end is the minimum width of the light distribution pattern.

[0020] Preferably, the first strip pattern, the second strip pattern and the third strip pattern are all arc patterns.

[0021] A second aspect of the present application further provides a vehicle lamp, comprising a light guide according to any one of the technical solutions of the first aspect.

[0022] In addition, the third aspect of the present application also provides a vehicle, comprising the headlights described in the technical solution according to the second aspect.

[0023] The light guide of the present application has the following advantages:

[0024] For existing light guides, for optical surfaces with large width differences, strip patterns with complete structures are set in the boundary areas of the optical surfaces to ensure that the light guides have a better appearance when not lit, and have a complete and uniform lighting effect without increasing costs.

[0025] Other advantages of the present application and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic structural diagram of a specific embodiment of a first pattern unit in the prior art;

[0027] FIG2 is a schematic structural diagram of a specific embodiment of a second pattern unit in the prior art;

[0028] FIG3 is a schematic structural diagram of a specific embodiment of a second pattern unit and a third pattern unit in the prior art;

[0029] FIG4 is a schematic structural diagram of the actual application of FIG3;

[0030] FIG5 is a schematic structural diagram of a specific embodiment of the light guide member of the present application;

[0031] FIG6 is a schematic structural diagram of the actual application of FIG5;

[0032] FIG7 is a schematic structural diagram of a specific embodiment of the optical surface of the present application;

[0033] FIG8 is a partial dimension diagram of FIG7;

[0034] FIG9 is a schematic structural diagram of a specific embodiment of the light distribution pattern of the light guide member of the present application;

[0035] FIG10 is a schematic structural diagram of a specific embodiment of the light distribution pattern of the present application;

[0036] FIG11 is a schematic structural diagram of a specific embodiment of the pattern unit of the present application.

[0037] DESCRIPTION OF REFERENCE NUMERALS 1 first rib pattern 2 second rib pattern 3 third rib pattern 4 pattern dividing line 5 pattern unit 6 first pattern unit 7 second pattern unit 8 third pattern unit DETAILED DESCRIPTION

[0038] The specific embodiments of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present application, and the scope of protection of the present application is not limited to the specific embodiments described below.

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

[0040] In the description of this application, it is necessary to explain that some directional terms involved in the following description to clearly illustrate the technical solutions of this application, such as "up", "down", "left", "right", etc., are based on the normal use orientation of the headlight. "Front" refers to the direction indicated by the light emitting direction of the headlight, "rear" refers to the direction opposite to "front", "up" and "down" refer to the vertical orientation of the headlight after it is installed on the vehicle, "inside" refers to the position close to the geometric center of the headlight, and "outside" refers to the position away from the geometric center of the headlight. The terms are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application.

[0041] As shown in Figures 5 to 11, the first aspect of the present application provides a light guide, including a light guide body and an optical surface provided on the light guide body, wherein a light distribution pattern is provided on the optical surface, wherein the light distribution pattern includes at least one first strip pattern 1, at least one second strip pattern 2, and at least one third strip pattern 3; the light distribution pattern includes a first width end and a second width end, and endpoints A1, A2, ..., A1 provided at the second width end and sequentially provided along the width direction of the second width end. i 、A j ...A m , and endpoints B1, B2...B arranged at the first width end and arranged in sequence along the width direction of the first width end i ...B k ...B n , endpoint A1 to endpoint A i From endpoint B1 to endpoint B i One-to-one connection forms the first stripe pattern 1, endpoint A j To endpoint A m Endpoint B k To endpoint B nOne-to-one connection forms a second stripe pattern 2, wherein n, m, k, i, j are all natural numbers, i≤j, n>m, i≥2, mj≥1 or nk≥1;

[0042] Endpoint B i To endpoint B k There is at least one third strip pattern 3 between the two strip patterns, one end of which is located at the end point A. j To endpoint B k or

[0043] Endpoint B i To endpoint B k There is at least one third strip pattern 3 between the two strip patterns, one end of which is located at the end point A. i To endpoint B i On the connection line.

[0044] In a specific embodiment of the present application, as shown in FIG9 and FIG10, the width of the first width end of the optical surface is much greater than the width of the second width end of the optical surface, and the endpoints A1, A2...A i The second width end is provided and arranged in sequence along the width direction of the second width end, with endpoints B1, B2...B i The first width end and the first width end are sequentially arranged in the width direction, with endpoints A1, A2...A i With endpoints B1, B2...B i The one-to-one connection forms at least one first stripe pattern 1. It can be known that the area formed by the connection of endpoints A1 and B1 and the connection of endpoints A2 and B2 is a stripe pattern.

[0045] It should be noted that the light distribution pattern on the optical surface of the present application is not limited to the above-mentioned first strip pattern 1, second strip pattern 2 and third strip pattern 3. What is shown in the present application is only a part of the structure of the pattern to demonstrate the basic concept of the present application. The strip pattern can be further divided or the pattern unit shape can be set according to needs to finally form the required light output pattern.

[0046] In the present application, the width of the first width end of the optical surface is much greater than the width of the second width end of the optical surface. If the second width end endpoints are connected in sequence with the first width end endpoints in the order in which they are set, such as endpoint A m and endpoint B n Connect to...Endpoint A j With endpoint B k If the first stripe pattern 1 is connected, the first stripe pattern 1 will be incomplete, that is, the first stripe pattern 1 is cut off by the outer boundary of the optical surface, affecting the lighting effect and the appearance of the light guide. As shown in Figures 5 and 6, the line connecting endpoints A1 and B1 and endpoint A i With endpoint Bi A first strip pattern 1 having at least one complete structure is provided between the connecting lines, and the outermost boundary of the first strip pattern 1 coincides with the outer boundary of the optical surface of the light guide, so that when the light guide is not lit, there is no need to set other structures (such as spraying black paint on the outer boundary area of ​​the optical surface of the light guide, adding leather grain, etc.) to cover up the structural defects, so that the light guide has a better appearance. If the light guide of the present application is lit, the first strip pattern 1 located on the outer side of the optical surface also ensures the integrity and uniformity of the lighting effect. It does not change the original design intention of the lighting effect of the optical surface of the light guide due to the provision of the first strip pattern 1, and it also does not increase the cost. Similarly, the second strip pattern 2 also has the same beneficial effects, which will not be repeated here.

[0047] In a specific embodiment of the present application, as shown in FIG5 and FIG8, at least one first strip pattern 1 with a complete structure is provided to ensure that the outermost area on the optical surface of the light guide has a complete light distribution pattern around the outer boundary of the optical surface.

[0048] As a preferred embodiment of the present application, as shown in Figures 5 and 11, the light distribution pattern of the light guide of the present application also includes multiple pattern dividing lines 4, and each pattern dividing line 4 intersects with the first strip pattern 1, the second strip pattern 2, and the third strip pattern 3 to form a number of pattern units 5.

[0049] As a preferred embodiment of the present application, as shown in FIG6 , each pattern unit 5 is at least one of a fisheye pattern, a pyramid pattern, and a polyhedron pattern.

[0050] In a specific embodiment of the present application, as shown in FIG11 , a pattern structure of at least one of a fisheye pattern, a pyramid pattern, and a polyhedron pattern is formed by the intersection of the first strip pattern 1, the second strip pattern 2, the third strip pattern 3, and each pattern dividing line 4, thereby further improving the uniformity of the lighting effect.

[0051] As a preferred embodiment of the present application, as shown in FIG8 , the widths of the first strip patterns 1 are equal, or the widths of the second strip patterns 2 are equal, or the widths of the first strip patterns 1 and the second strip patterns 2 are equal.

[0052] In a specific embodiment of the present application, the first strip patterns 1 and the second strip patterns 2 of equal width can form a relatively uniform light output effect. Of course, according to actual light output needs, the widths can also be set to be unequal.

[0053] As a preferred embodiment of the present application, as shown in Figure 8 , the widths d of the first stripe pattern 1, the second stripe pattern 2, and the third stripe pattern 3 are equal. Specifically, setting the widths of the first stripe pattern 1, the second stripe pattern 2, and the third stripe pattern 3 to be equal can make the lighting effect of the optical surface more beautiful.

[0054] As a preferred embodiment of the present application, as shown in Figures 5, 8-10, the first stripe pattern 1 is located on the outside of the optical surface, the second stripe pattern 2 is located on the inside of the optical surface, and the third stripe pattern 3 is located between the first stripe pattern 1 and the second stripe pattern 2. The boundary of the first stripe pattern 1 on the outermost side of the optical surface coincides with the outer boundary of the optical surface of the light guide; and / or, the second stripe pattern 2 on the innermost side of the optical surface coincides with the inner boundary of the optical surface. Specifically, the boundary of the first stripe pattern 1 on the outermost side of the optical surface is set to coincide with the outer boundary of the optical surface to ensure the integrity of the lighting effect of the optical surface, and / or the boundary of the second stripe pattern 2 on the innermost side of the optical surface is set to coincide with the inner boundary of the optical surface to ensure the integrity of the lighting effect of the optical surface. The third stripe pattern 3 is arranged between the first stripe pattern 1 and the second stripe pattern 2, so that no incomplete patterns appear at the boundaries on both sides of the optical surface, and the third stripe pattern 3 is incomplete only at the intersection with the first stripe pattern 1 or the second stripe pattern 2. The number of incomplete patterns is greatly reduced, which greatly improves the integrity and uniformity of the lighting effect.

[0055] In one specific embodiment of the present application, as shown in Figures 9 and 10, the first width D at the first width end is the maximum width of the light distribution pattern, and the second width F at the second width end is the minimum width of the light distribution pattern. Using the maximum and minimum widths of the light distribution pattern as the basis for pattern design ensures uniform light output from other areas of the optical surface.

[0056] In a specific embodiment of the present application, the first stripe pattern 1, the second stripe pattern 2, and the third stripe pattern are all arc patterns. As shown in FIG5, for the arc-shaped optical surface, an arc pattern adapted thereto is preferably selected to facilitate pattern design and ensure an aesthetically pleasing appearance.

[0057] A second aspect of the present application provides a vehicle lamp, comprising a light guide according to any one of the technical solutions of the first aspect.

[0058] A third aspect of the present application provides a vehicle, comprising the headlights described in the technical solution of the second aspect.

[0059] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, various simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the scope of protection of the present application.

[0060] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner unless there is any contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0061] In addition, the various implementation methods of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A light guide, characterized in that: The light guide comprises a main body and an optical surface provided on the main body, wherein the optical surface is provided with a light distribution pattern, and the light distribution pattern comprises at least one first strip pattern (1), at least one second strip pattern (2), and at least one third strip pattern (3); The light distribution pattern includes a first width end and a second width end, endpoints A1, A2, ..., A2 are arranged at the second width end and are arranged in sequence along the width direction of the second width end. i 、A j ...A m , and endpoints B1, B2...B arranged at the first width end and arranged in sequence along the width direction of the first width end i ...B k ...B n , the endpoint A1 to the endpoint A i From the endpoint B1 to the endpoint B i One-to-one connection forms the first stripe pattern (1), the endpoint A j To the endpoint A m respectively with the endpoint B k To the endpoint B n The second strip pattern (2) is formed by connecting them in a one-to-one correspondence, wherein n, m, k, i, and j are all natural numbers, i≤j, n>m, i≥2, mj≥1 or nk≥1; The endpoint B i To the endpoint B k There is at least one third strip pattern (3) between the two, one end of the third strip pattern (3) is located at the end point A. j To the endpoint B k or, the endpoint B i To the endpoint B k There is at least one third strip pattern (3) between the two, one end of the third strip pattern (3) is located at the end point A. i To the endpoint B i On the connection line.

2. The light guide according to claim 1, wherein: The light distribution pattern further comprises a plurality of pattern dividing lines (4), each of the pattern dividing lines (4) intersecting with the first strip pattern (1), the second strip pattern (2), and the third strip pattern (3) to form a plurality of pattern units (5).

3. The light guide according to claim 2, wherein: Each of the pattern units (5) is at least one of a fisheye pattern, a pyramid pattern, and a polyhedron pattern.

4. The light guide according to any one of claims 1 to 3, characterized in that: The widths of the first strip patterns (1) are equal; the widths of the second strip patterns (2) are equal; or The widths of each of the first strip patterns (1) and each of the second strip patterns (2) are equal.

5. The light guide according to any one of claims 1 to 3, characterized in that: The widths of the first stripe pattern (1), the second stripe pattern (2), and the third stripe pattern (3) are all equal.

6. The light guide according to any one of claims 1 to 3, characterized in that: The first strip pattern (1) is located on the outer side of the optical surface, the second strip pattern (2) is located on the inner side of the optical surface, and the third strip pattern (3) is located between the first strip pattern (1) and the second strip pattern (2). The boundary of the first strip pattern (1) at the outermost side of the optical surface coincides with the outer boundary of the optical surface; and / or the boundary of the second strip pattern (2) at the innermost side of the optical surface coincides with the inner boundary of the optical surface.

7. The light guide according to any one of claims 1 to 3, characterized in that: The first width D of the first width end is the maximum width of the light distribution pattern, and the second width F of the second width end is the minimum width of the light distribution pattern.

8. The light guide according to any one of claims 1 to 3, characterized in that: The first stripe pattern (1), the second stripe pattern (2) and the third stripe pattern (3) are all arc-shaped patterns.

9. A vehicle lamp, characterized in that: The light guide comprises the light guide according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising the vehicle lamp according to claim 9.

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