Thick-walled light guide element, thick-walled light guide assembly, vehicle lamp and vehicle

Abstract

This invention relates to a thick-walled light guide element, a thick-walled light guide assembly, a vehicle lamp, and an automobile, belonging to the field of optical technology. The thick-walled light guide element includes a light-incoming surface, multiple sets of thick-walled reflective surfaces, and a light-outgoing surface. Each thick-walled reflective surface includes multiple reflective action surfaces, comprising an upper reflective region, a middle reflective region, and a lower reflective region. The upper and lower reflective regions are symmetrically arranged relative to the middle reflective region. Multiple sets of thick-walled reflective surface patterns are provided on the reflective action surfaces, including a first thick-walled reflective surface pattern, a second thick-walled reflective pattern, and a third thick-walled reflective surface pattern. The upper reflective region, from top to bottom, is provided with the third thick-walled reflective surface pattern, the second thick-walled reflective surface pattern, and the first thick-walled reflective surface pattern, from bottom to top, in sequence. The thick-walled light guide element of this invention has a simple structure and provides uniform light emission.

Description

Technical Field

[0001] This invention relates to the field of optical technology, specifically to a thick-walled light guide element, a thick-walled light guide assembly, a vehicle lamp, and an automobile. Background Technology

[0002] Thick-walled light guide elements are commonly used in automotive headlights. In the prior art, patent CN202110609255.8 discloses a light-emitting structure for a thick-walled component. The thick-walled component has a front reflecting surface, a rear reflecting surface, and a secondary reflecting surface. When light propagates inside the thick-walled component and reaches these surfaces, it is reflected, thus changing the light's propagation path. The light-emitting surface is the front surface of the thick-walled component. When emitting light, the light exits from the light-emitting surface from back to front within the thick-walled component. Each light-emitting unit illuminates a portion of the light-emitting surface. The number of light-emitting units is determined by the width of the thick-walled component. To prevent localized dark areas in the light-emitting surface, when the thick-walled component has multiple light-emitting units, these units should be arranged continuously along the width direction X of the thick-walled component. Furthermore, it is necessary to ensure that the width of each light-emitting unit is equal, resulting in uniform light emission from the light-emitting surface.

[0003] As described above, existing automotive headlights come in a variety of shapes and sizes, and the structures of thick-walled light guide elements are also diverse. This places higher demands on the width of the light-emitting surface of these elements. In headlight designs with a wide light-emitting surface, common thick-walled light guide elements include the following three forms: the first is a circular light guide structure, which arranges multiple light guides at the bottom of the thick wall, with an LED light source at the end of each light guide; the second is a direct-projection thick-walled light guide structure, where the light source is located at the bottom of the thick wall; and the third is a side-reflection thick-walled light guide structure, where the light source is located on the side of the thick wall. Circular light guide structures can illuminate wider, thicker walls, but this type of light guide structure is expensive and cannot achieve dynamic effects such as flowing water. Direct-projection thick-walled light guide structures produce bright spots, affecting aesthetics. Side-reflection thick-walled light guide structures have limited flexibility in their arrangement and can typically only illuminate thick-walled light guide elements with a width of about 10mm, making them unsuitable for the sophisticated and complex lighting designs of modern automobiles. Summary of the Invention

[0004] One objective of this invention is to provide a thick-walled light guide element to solve the problems of high cost and uneven light emission due to the wide and thick walls of existing thick-walled light guide elements; another objective is to provide a thick-walled light guide assembly; a third objective is to provide a vehicle lamp; and a fourth objective is to provide an automobile.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A thick-walled light guide element includes a light-receiving surface, multiple sets of thick-walled reflective surfaces for reflecting light from the light-receiving surface, and a light-exiting surface for emitting light reflected from the thick-walled reflective surfaces. The multiple sets of thick-walled reflective surfaces are continuously disposed on one side of the light-receiving surface and intersect with the light-receiving surface. Each thick-walled reflective surface includes multiple reflective action surfaces, and each reflective action surface includes an upper reflective area, a lower reflective area, and a middle reflective area located in the middle region of the reflective action surface. The upper reflective area and the lower reflective area are symmetrically arranged relative to the middle reflective area. Multiple sets of thick-walled reflective surface patterns are provided on the reflective action surface. The reflective surface pattern includes a first thick-walled reflective surface pattern, a second thick-walled reflective surface pattern, and a third thick-walled reflective surface pattern. The upper reflective area is provided with the third thick-walled reflective surface pattern, the second thick-walled reflective surface pattern, and the first thick-walled reflective surface pattern from top to bottom. The middle thick-walled reflective area is provided with the second thick-walled reflective surface pattern. The lower thick-walled reflective area is provided with the third thick-walled reflective surface pattern, the second thick-walled reflective surface pattern, and the first thick-walled reflective surface pattern from bottom to top. Light entering from the light-inlet surface is reflected by the thick-walled reflective surface and then emitted from the light-outlet surface to form uniform emitted light.

[0007] According to the above technical means, the thick-walled reflective surface can reflect the light incident from the light-inlet surface and emit it out through the light-outlet surface in the direction of travel. The pattern of the thick-walled reflective surface can perform total internal reflection of the light. The first thick-walled reflective surface pattern, the second thick-walled reflective surface pattern and the third thick-walled reflective surface pattern can reflect light of different intensities in different areas, so as to reflect the light to the corresponding position according to the light distribution requirements, thereby ensuring the uniformity of the emitted light.

[0008] Furthermore, multiple rows of focusing structures are provided on the light-incoming surface along the length of the thick-walled light guide element.

[0009] Furthermore, the angle between the reflective surface and the light-incoming surface is 30-60°.

[0010] According to the above technical means, the angle between the reflective surface and the light-incoming surface of the present invention is 45°. The incident light rays can form approximately parallel light rays after being reflected by the light-concentrating structure. The parallel light rays are reflected by the thick-walled reflective surface and emitted from the corresponding position of the light-outgoing surface, forming relatively uniform emitted light rays.

[0011] Furthermore, the first, second, and third thick-walled reflective surface patterns each include multiple continuous thick-walled reflective pattern blocks, the cross-section of a single thick-walled reflective pattern block is square, and the radii of curvature of the surfaces of the first, second, and third thick-walled reflective surface patterns increase sequentially.

[0012] Based on the above technical means, the first thick-walled reflective surface pattern, the second thick-walled reflective surface pattern, and the third thick-walled reflective surface pattern divide the light into zones, thereby improving the uniformity of light diffusion. The square thick-walled reflective pattern block can further improve the uniformity of light diffusion.

[0013] Furthermore, the light-emitting surface is provided with a diffusion pattern, and the surface of the diffusion pattern is provided with a fine skin texture.

[0014] Based on the aforementioned technical means, a diffusion pattern is formed on the light-emitting surface, and a fine texture is formed on the surface of the diffusion pattern to further improve the uniformity of the emitted light. It is conceivable that the fine texture can be formed on the surface of all diffusion patterns, or only on some of the diffusion patterns, depending on the actual application requirements.

[0015] Furthermore, the thick-walled reflective surface also includes a non-reflective surface connected to the reflective surface, and the reflective surface and the non-reflective surface are spaced apart along the length direction of the thick-walled optical guide element.

[0016] Furthermore, the angle between the reflective surface and the non-reflective surface is 60-120°.

[0017] According to the above technical means, the reflective surface can reflect the light from the light-concentrating structure and emit it from a specific position on the light-emitting surface, thereby forming uniform emitted light. The non-reflective surface does not have a reflective effect on the light, and it works together with the reflective surface to form a more specific light emission effect.

[0018] A thick-walled light guide assembly includes a PCB board and the thick-walled light guide element described in any of the above technical solutions. The PCB board is provided with multiple light sources, and a bracket is provided on the side of the PCB board away from the light sources. Each light source is arranged in a one-to-one correspondence with each light-concentrating structure on the light-incoming surface.

[0019] Based on the above technical means, the light source, the focusing structure and the thick-walled reflective surface work together. The focusing structure can collimate and reflect the light emitted by the light source. The thick-walled reflective pattern on the thick-walled reflective surface is designed in zones according to the relative photometric parameters of the light source, so as to uniformly reflect the light emitted from the focusing structure and thus achieve the effect of uniform light emission.

[0020] A vehicle light, comprising the thick-walled light guide component described above.

[0021] An automobile that includes the headlights described above.

[0022] The thick-walled optical guide element of the present invention has the following beneficial effects:

[0023] (1) In the basic embodiment of the present invention, the thick-walled light guide element of the present invention can diffuse light of different intensities in a partitioned manner by setting a first thick-walled reflective surface pattern, a second thick-walled reflective surface pattern and a third thick-walled reflective surface pattern on the reflective surface, so that the light is reflected by the reflective surface and emitted uniformly from the light-emitting surface in the direction of driving. It has the advantages of simple structure and uniform light emission.

[0024] (2) In a preferred embodiment of the present invention, the light-emitting surface of the present invention is provided with a diffusion pattern, and the surface of the diffusion pattern is provided with a fine texture, thereby further improving the uniformity of the emitted light. Attached Figure Description

[0025] Figure 1 An exploded view of the thick-walled optical guide assembly provided in an embodiment of the present invention;

[0026] Figure 2 The optical path diagram of the thick-walled optical guide component provided in the embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of a thick-walled optical guide component provided in an embodiment of the present invention;

[0028] Figure 4 A partially enlarged view of the thick-walled optical guide assembly provided in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the thick-walled reflective surface pattern in a thick-walled optical guide element provided in an embodiment of the present invention.

[0030] Wherein, 1-light-entering surface; 2-thick-walled reflective surface; 201-reflective surface; 202-non-reflective surface; 3-light-exiting surface;

[0031] 4- Pattern of the first thick-walled reflective surface; 5- Pattern of the second thick-walled reflective surface; 6- Pattern of the third thick-walled reflective surface; 7- Concentrating structure;

[0032] 8-PCB board; 9-Light source; 10-Bracket. Detailed Implementation

[0033] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0034] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0035] refer to Figures 1 to 5 The present invention provides a thick-walled light guide element, including a light-inlet surface 1, multiple sets of thick-walled reflective surfaces 2 for reflecting light from the light-inlet surface 1, and a light-outlet surface 3 for emitting light reflected by the thick-walled reflective surfaces 2. The multiple sets of thick-walled reflective surfaces 2 are continuously disposed on one side of the light-inlet surface 1 and intersect with the light-inlet surface 1. The thick-walled reflective surfaces 2 include multiple sets of reflective action surfaces 201. Each reflective action surface 201 includes an upper reflective region, a lower reflective region, and a middle reflective region located in the middle region of the reflective action surface 201. The upper reflective region and the lower reflective region are symmetrically arranged with respect to the middle reflective region. Multiple sets of thick-walled reflective surfaces 201 are provided on the reflective action surface 201. The reflective surface pattern, the thick-walled reflective surface pattern includes a first thick-walled reflective surface pattern 4, a second thick-walled reflective surface pattern 5 and a third thick-walled reflective surface pattern 6. The upper reflective area is provided with the third thick-walled reflective surface pattern 6, the second thick-walled reflective surface pattern 5 and the first thick-walled reflective surface pattern 4 from top to bottom. The middle thick-walled reflective area is provided with the second thick-walled reflective surface pattern 5. The lower thick-walled reflective area is provided with the third thick-walled reflective surface pattern 6, the second thick-walled reflective surface pattern 5 and the first thick-walled reflective surface pattern 4 from bottom to top. The light entering from the light-inlet surface 1 is reflected by the thick-walled reflective surface 2 and then emitted through the light-outlet surface 3 to form uniform emitted light.

[0036] In the above basic embodiments of the present invention, the present invention improves the structure of the traditional side-reflecting thick-walled light guide element. Specifically, it sets multiple sets of thick-walled reflective surface patterns on the thick-walled reflective surface 2. The thick-walled reflective surface 2 is located on one side of the light-incoming surface 1 and intersects with the light-incoming surface 1. The thick-walled reflective surface 2 includes multiple reflective surfaces 201. Each reflective surface 201 includes an upper reflective region, a middle reflective region, and a lower reflective region. The middle reflective region is located in the middle area of ​​a single reflective surface 201. The upper reflective region and the lower reflective region are symmetrically arranged relative to the middle reflective region. The reflective surfaces 201 in different regions are provided with corresponding thick-walled reflective surface patterns. The thick-walled reflective surface patterns can reflect the light emitted from the light-incoming surface 1. Total internal reflection is achieved by using a thick-walled reflective surface pattern, which includes a first thick-walled reflective surface pattern 4, a second thick-walled reflective surface pattern 5, and a third thick-walled reflective surface pattern 6. This invention achieves this by sequentially arranging the third thick-walled reflective surface pattern 6, the second thick-walled reflective surface pattern 5, and the first thick-walled reflective surface pattern 4 from top to bottom in the upper reflective area, and by arranging the second thick-walled reflective surface pattern 5 in the middle reflective area, and by sequentially arranging the third thick-walled reflective surface pattern 6, the second thick-walled reflective surface pattern 5, and the first thick-walled reflective surface pattern 4 from bottom to top in the lower reflective area. This allows the reflective surface 201 to reflect light of different intensities and direct the light from the light-emitting surface 3 to a specific position, thereby improving the uniformity of the emitted light.

[0037] Specifically, in order to focus the incident light and to cooperate with the thick-walled reflective surface 2, multiple rows of focusing structures 7 are provided on the light-incoming surface 1 along the length of the thick-walled light guide element.

[0038] According to the above-mentioned technical means, multiple rows of focusing structures 7 are arranged on the light-incoming surface 1 along the length direction of the thick-walled light guide element, and multiple rows of focusing structures 7 are also arranged from the width direction of the thick-walled light guide element, that is, the focusing structures 7 form a matrix structure. It should be noted that the length direction of the thick-walled light guide element is the same as the setting direction of the thick-walled reflective surface 2 on one side of the light-incoming surface 1, so that the light emitted from each light source 9 can form approximately parallel light after being converged and collimated by each focusing structure 7 and be directed to a specific position on the thick-walled reflective surface 2 or the reflective surface 201.

[0039] Preferably, a double row of focusing structures 7 can be provided on the light-incoming surface 1 of the thick-walled light guide element of the present invention, wherein one row of focusing structures 7 is located close to the thick-walled reflective surface 2, and the other row of focusing structures 7 is located away from the thick-walled reflective surface 2.

[0040] Specifically, the light reflected from the light-concentrating structure 7 is reflected onto the reflective surface 201 of the thick-walled reflective surface 2, and the angle between the reflective surface 201 and the light-incoming surface 1 is 30-60°.

[0041] According to the above-mentioned technical means, in this invention, the included angle between the reflective surface 201 and the light-receiving surface 1 is preferably set to 45°, and the thick-walled reflective surface pattern is laid on the surface of the reflective surface 201, thereby improving the uniformity of light diffusion. For example, as described above, in the case where a double-row light-concentrating structure 7 is provided on the light-receiving surface 1, see... Figure 2 The incident light rays are reflected by a row of focusing structures 7 to form approximately parallel light, and then reflected by the thick-walled reflective surface pattern below the reflecting surface before exiting from below the light-emitting surface 3. The incident light rays are also reflected by another row of focusing structures 7 to above the reflecting surface 201, and then reflected by the thick-walled reflective surface pattern above the reflecting surface 201 before exiting from above the light-emitting surface 3. The thick-walled reflective surface pattern reflects all the light rays to the appropriate positions according to the light distribution requirements.

[0042] Furthermore, in order to reflect light to the appropriate position and thus ensure the uniformity of the emitted light, the first thick-walled reflective surface pattern 4, the second thick-walled reflective surface pattern 5, and the third thick-walled reflective surface pattern 6 each include multiple continuous thick-walled reflective pattern blocks. Figure 5 It can be seen that the cross-section of a single thick-walled reflective pattern block is square, and the radii of curvature of the surfaces of the first thick-walled reflective surface pattern 4, the second thick-walled reflective surface pattern 5, and the third thick-walled reflective surface pattern 6 increase sequentially. It should be noted that the diffusion angle of the collimated light rays passing through the first thick-walled reflective surface pattern 4 is about 15-20 degrees, the diffusion angle of the collimated light rays passing through the second thick-walled reflective surface pattern 5 is about 10-15 degrees, and the diffusion angle of the collimated light rays passing through the third thick-walled reflective surface pattern 6 is about 5-10 degrees.

[0043] Specifically, in order to further improve the uniformity of the emitted light, a diffusion pattern is provided on the light-emitting surface 3, and a fine texture is added to the surface of the diffusion pattern.

[0044] Specifically, the thick-walled reflective surface 2 also includes a non-reflective surface 202 connected to the reflective surface 201, and the reflective surface 201 and the non-reflective surface 202 are spaced apart along the length direction of the thick-walled optical guide element.

[0045] Furthermore, the included angle between the reflective surface 201 and the non-reflective surface 202 is 60-120°. In this invention, the included angle between the reflective surface 201 and the non-reflective surface 202 is preferably set to 90°.

[0046] According to the above technical means, the thick-walled reflective surface 2 includes a reflective surface 201 and a non-reflective surface 202. The reflective surface 201 and the non-reflective surface 202 are arranged alternately. Multiple sets of thick-walled reflective surface patterns are arranged on the reflective surface 201. Each set of thick-walled reflective surface patterns forms different emission effects through curvature changes, thereby forming a better lighting effect.

[0047] A second aspect of the present invention also provides a thick-walled light guide assembly, which includes a PCB board 8 and the thick-walled light guide element described in any of the above technical solutions, such as... Figures 1 to 4 As shown, a plurality of light sources 9 are provided on the PCB board 8, and a bracket 10 is provided on the side of the PCB board 8 away from the light sources 9. Each light source 9 is correspondingly arranged with a focusing structure 7 on the light-receiving surface 1. When the thick-walled light guide element of any of the above basic or preferred embodiments of the present invention is applied, the thick-walled light guide assembly also has the above advantages. In the present invention, the light source 9 is preferably an LED lamp, and a group of LED lamps corresponds to a group of focusing structures 7, so that the thick-walled light guide assembly of the present invention can emit uniform and satisfactory light. The PCB board 8 is provided with mounting holes, so that the PCB board 8 can be connected to the thick-walled light guide element and the bracket 10 respectively by fasteners, such as screws.

[0048] A third aspect of the present invention also provides a vehicle lamp, which includes the thick-walled light guide component described in the above-described technical solution, wherein the thick-walled light guide component can be configured in the shape of a vehicle lamp. When the thick-walled light guide component described in the above-described technical solution is applied to the present invention, the vehicle lamp also has the aforementioned advantages.

[0049] A fourth aspect of the present invention also provides an automobile comprising the headlights described in the above-described technical solutions. When the headlights described in the above-described technical solutions are applied to the present invention, the automobile also has the aforementioned advantages.

[0050] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0051] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0052] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A thick-walled light guide element, characterized by The system includes a light-receiving surface (1), multiple sets of thick-walled reflective surfaces (2) for reflecting light from the light-receiving surface (1), and a light-exiting surface (3) for emitting light reflected from the thick-walled reflective surfaces (2). The multiple sets of thick-walled reflective surfaces (2) are continuously arranged on one side of the light-receiving surface (1) and intersect with the light-receiving surface (1). The thick-walled reflective surfaces (2) include multiple sets of reflective action surfaces (201). Each reflective action surface (201) includes an upper reflective area, a lower reflective area, and a middle reflective area located in the middle region of the reflective action surface (201). The upper reflective area and the lower reflective area are symmetrically arranged with respect to the middle reflective area. The reflective action surface (201) is provided with multiple sets of thick-walled reflective surface patterns. The thick-walled reflective surface patterns include a first thick-walled reflective surface pattern (4), a second thick-walled reflective pattern (5), and a third thick-walled reflective surface pattern (6). The upper reflective area is provided with the third thick-walled reflective surface pattern (6) from top to bottom. 6) The second thick-walled reflective surface pattern (5) and the first thick-walled reflective surface pattern (4) are provided in the thick-walled reflective middle area. The third thick-walled reflective surface pattern (6), the second thick-walled reflective surface pattern (5) and the first thick-walled reflective surface pattern (4) are provided in the thick-walled reflective lower area from bottom to top. The first thick-walled reflective surface pattern (4), the second thick-walled reflective surface pattern (5) and the third thick-walled reflective surface pattern (6) are respectively provided with multiple continuous thick-walled reflective surface pattern blocks. The cross-section of a single thick-walled reflective surface pattern block is square. The radius of curvature of the curved surfaces of the first thick-walled reflective surface pattern (4), the second thick-walled reflective surface pattern (5) and the third thick-walled reflective surface pattern (6) increases sequentially. The light entering from the light-inlet surface (1) is reflected by the thick-walled reflective surface (2) and then emitted through the light-outlet surface (3) so as to form uniform emitted light.

2. The thick-walled light guide element of claim 1, wherein Multiple rows of focusing structures (7) are provided on the light-incoming surface (1) along the length direction of the thick-walled light guide element.

3. The thick-walled light guide element of claim 1, wherein, The angle between the reflective surface (201) and the light-incoming surface (1) is 30-60°.

4. The thick-walled optical guide element according to claim 1, characterized in that, The light-emitting surface (3) is provided with a diffusion pattern, and the surface of the diffusion pattern is provided with fine skin texture.

5. The thick walled light guide element of claim 3, wherein, The thick-walled reflective surface (2) also includes a non-functional surface (202) connected to the reflective surface (201), and the reflective surface (201) and the non-functional surface (202) are spaced apart along the length direction of the thick-walled optical guide element.

6. The thick-walled light guide element of claim 5, wherein, The angle between the reflective surface (201) and the non-reflective surface (202) is 60-120°.

7. A thick-walled light guide assembly, characterized by Includes a PCB board (8) and a thick-walled light guide element according to any one of claims 1 to 6. The PCB board (8) is provided with a plurality of light sources (9). A bracket (10) is provided on the side of the PCB board (8) away from the light sources (9). Each light source (9) is provided in a one-to-one correspondence with each light-concentrating structure (7) on the light-inlet surface (1).

8. A vehicle lamp characterized by The vehicle light includes the thick-walled light guide assembly as described in claim 7.

9. An automobile characterized by comprising: The vehicle includes the headlights as claimed in claim 8.

Images