Large-spacing thick-wall part with extremely narrow light emitting LEDs and vehicle lamp

Abstract

The utility model relates to the technical field of automobile lamps, in particular to a large-spacing thick-wall piece with LEDs emitting light extremely narrow and an automobile lamp. According to the large-spacing thick-wall piece with the extremely narrow light emitting function for the LED, a rear thick-wall piece comprises light guide units I, and each light guide unit I comprises a first light incident part, a first total reflection part and a first light emitting surface; the first total reflection part comprises a first total reflection surface, a second total reflection surface, a first reflection structure and a second reflection structure, and the first light emitting surface comprises a plurality of first condensation structures; the front thick-wall piece comprises a second light-in part, a second total reflection part and a second light-out surface which are sequentially arranged from the light-in side to the light-out side; the second light incident part is provided with a plurality of V-shaped grooves, the V-shaped grooves divide the second light incident part into a plurality of light guide units II, the light incident surfaces of the light guide units II are provided with second light incident structures, and the second light incident structures are in one-to-one correspondence with the first light condensation structures. The LED large-spacing thick-wall piece with the extremely narrow light emitting function has an extremely narrow light emitting structure, and is small in occupied space and high in light emitting efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamps, in particular to a large-pitch thick-walled part with extremely narrow light output of an LED and an automobile lamp. Background Art

[0002] With the rapid development of automotive lighting technology and consumers' increasing demand for lighting effects, production costs and efficiency are urgent issues for automotive lighting suppliers. Existing solutions require light from the LED to pass through a series of devices before exiting from the light-emitting surface to achieve more uniform lighting. Limited by installation space, existing thick-walled LED components require a minimal light-emitting structure, which means they must have an extremely narrow light-emitting surface. However, this reduced light-emitting surface in existing thick-walled LED components results in poor lighting efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a large-pitch thick-walled LED component and a vehicle lamp with extremely narrow light output. The large-pitch thick-walled LED component has an extremely narrow light output structure, occupies a small space, and has high light output efficiency.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A thick-walled component with a large spacing for LED light output with extremely narrow light output, comprising a front thick-walled component and a rear thick-walled component arranged front and back, wherein the rear thick-walled component comprises two or more light guide units I arranged side by side, each light guide unit I comprising a first light incident portion, a first total reflection portion, and a first light emitting surface arranged in sequence from the light incident side to the light emitting side;

[0006] The first light-emitting surface includes two or more first light-concentrating structures distributed side by side, and the first light-concentrating structures are curved surfaces;

[0007] The front thick-walled member includes a second light incident portion, a second total reflection portion, and a second light emitting surface, which are arranged in sequence from the light incident side to the light emitting side, wherein the second light incident portion is located outside the first light emitting surface; and the wall thickness increases gradually from the second light incident portion to the second total reflection portion;

[0008] The second light incident portion is provided with a plurality of V-shaped grooves, which divide the second light incident portion into two or more light guide units II distributed side by side. The light incident surface of the light guide unit II is provided with a second light focusing structure, which corresponds one-to-one to the first light focusing structure.

[0009] Furthermore, the first total reflection portion includes a first total reflection surface and a second total reflection surface, and a first reflection structure and a second reflection structure, which are arranged in sequence along the vertical propagation direction of the light path, and the first reflection structure and the second reflection structure are arranged horizontally and symmetrically; the first reflection structure includes a third total reflection surface and a fourth total reflection surface along the horizontal propagation direction of the light path, and the second reflection structure includes a fifth total reflection surface and a sixth total reflection surface along the horizontal propagation direction of the light path.

[0010] Furthermore, the first total reflection surface and the second total reflection surface are parallel to each other and the second total reflection surface is located below the first total reflection surface. Both the first total reflection surface and the second total reflection surface form an angle of 40 to 50 degrees with the incident light.

[0011] Furthermore, the third total reflection surface and the fourth total reflection surface are parallel to each other, and both the third total reflection surface and the fourth total reflection surface form an angle of 40 to 50 degrees with the incident light;

[0012] The fifth total reflection surface and the sixth total reflection surface are parallel to each other, and both the fifth total reflection surface and the sixth total reflection surface form an angle of 40 to 50 degrees with the incident light;

[0013] The angle formed by the third total reflection surface and the incident light is the same as the angle formed by the fifth total reflection surface and the incident light.

[0014] Furthermore, a concave cavity is formed between the first reflective structure and the second reflective structure, and the first total reflection surface is located on a side of the concave cavity away from the first light incident portion.

[0015] Furthermore, the projection lengths of the first total reflection surface and the second total reflection surface in the horizontal direction are the same.

[0016] Furthermore, the projection lengths of the third total reflection surface and the fifth total reflection surface in the vertical direction are the same; the projection lengths of the fourth total reflection surface and the sixth total reflection surface in the vertical direction are the same.

[0017] Furthermore, the distance from the light-emitting surface of the first light incident part to the second total reflection surface is L1, the projection length of the second total reflection surface in the horizontal direction is L2, the projection length of the third total reflection surface in the horizontal direction is L3, and the distance from the third total reflection surface to the upper end of the first total reflection surface is L4, L1=L2=L3=L4.

[0018] Furthermore, the first light-concentrating structure has a convex curved surface, and the second light-concentrating structure has a concave curved surface.

[0019] Furthermore, the second light emitting surface is provided with a light distribution pattern.

[0020] A vehicle lamp comprises the aforementioned LED extremely narrow light emitting large-pitch thick-walled component.

[0021] The beneficial effects of the utility model are as follows: the utility model has a simple structure, the vertical light emitted from the first light incident portion is totally reflected twice by the first total reflection surface and the second total reflection surface before being emitted in parallel; the left light in the horizontal direction emitted from the first light incident portion is totally reflected twice by the third total reflection surface and the fourth total reflection surface before being emitted in parallel, and the right light in the horizontal direction emitted from the first light incident portion is totally reflected twice by the fifth total reflection surface and the sixth total reflection surface before being emitted in parallel; the total reflection system has the same number of total reflections of two for all light rays, ensuring that all light rays have the same path, making the emitted light rays more uniform; the light rays bent in different directions are finally emitted from the same first light emitting surface;

[0022] The first focusing structure converges these parallel light rays at focal point O, forming a bright spot. Light emanating from focal point O then passes through the second focusing structure and enters the second light-entry portion. The second focusing structure converges the vertical light to the focal point, where it is then refracted onto the upper and lower inclined sidewalls of the second total reflection portion for total reflection. Simultaneously, the second focusing structure diffuses the horizontal light, dispersing it onto the left and right inclined sidewalls of the second total reflection portion for reflection. The second focusing structure and the second total reflection portion work together to improve lighting uniformity and relatively focus the angle of the emitted light, increasing the energy efficiency of the light source while also maintaining the extremely narrow light output effect of the second light-emitting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the structure of the thick-walled component with large spacing and extremely narrow light output of LED in the utility model;

[0025] Figure 2 yes Figure 1 Front view of

[0026] Figure 3 yes Figure 1 Rear view;

[0027] Figure 4 yes Figure 1 A top view of

[0028] Figure 5 yes Figure 1 Bottom view of

[0029] Figure 6 yes Figure 1Side view of;

[0030] Figure 7 yes Figure 4 Cross-sectional view along the AA axis;

[0031] Figure 8 This is the vertical light path diagram of the thick-walled component with large spacing and extremely narrow light output of the LED in the utility model;

[0032] Figure 9 This is a light path diagram in the horizontal direction of a thick-walled part with a large spacing and extremely narrow light output of an LED in the utility model.

[0033] In the figure: 100. Front thick-walled part, 200. Rear thick-walled part, 1. First light incident part, 2. First total reflection part, 3. First light output surface, 4. Second light incident part, 5. Second total reflection part, 6. Second light output surface, 7. Recessed cavity, 21. First total reflection surface, 22. Second total reflection surface, 23. Third total reflection surface, 24. Fourth total reflection surface, 25. Fifth total reflection surface, 26. Sixth total reflection surface, 31. First focusing structure, 41. Second focusing structure. DETAILED DESCRIPTION

[0034] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this application belongs.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular also includes the plural. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example 1

[0038] like Figures 1 to 7The LED light with extremely narrow light output and large spacing and thick wall parts and the headlight shown include a front thick wall part 100 and a rear thick wall part 200 arranged in the front and rear, and the rear thick wall part 200 includes a plurality of light guide units I distributed side by side, and each light guide unit I includes a first light entrance part 1, a first total reflection part 2 and a first light exit surface 3 arranged in sequence from the light entrance side to the light exit side; the first total reflection part 2 includes a first total reflection surface 21 and a second total reflection surface 22, as well as a first reflection structure and a second reflection structure arranged in sequence along the vertical propagation direction of the light path, and the first reflection structure and the second reflection structure are arranged horizontally and symmetrically. The first reflection structure includes a third total reflection surface 23 and a fourth total reflection surface 24 along the horizontal propagation direction of the light path, and the second reflection structure includes a fifth total reflection surface 25 and a sixth total reflection surface 26 along the horizontal propagation direction of the light path; the first light exit surface 3 includes two or more first light focusing structures 31 distributed side by side, and the first light focusing structure 31 is a curved surface.

[0039] The front thick-walled part 100 includes a second light input portion 4, a second total reflection portion 5 and a second light output surface 6 which are arranged in sequence from the light input side to the light output side. The second light input portion 4 is located outside the first light output surface 3, and the wall thickness increases gradually from the second light input portion 4 to the second total reflection portion 5. The second light input portion 4 is provided with a plurality of V-shaped grooves, which divide the second light input portion 4 into two or more light guide units II distributed side by side. The light input surface of the light guide unit II is provided with a second light focusing structure 41, and the second light focusing structure 41 corresponds one-to-one to the first light focusing structure 31.

[0040] The front thick-walled part 100 and the rear thick-walled part 200 can be produced in a pair of molds.

[0041] The first light incident portion 1 is a collimated light focusing structure, and the LED light source is not limited to a color, and can be a single color red, white, yellow, or a combination of two of these colors, etc. The thick-walled member of the present invention can be made of transparent materials such as PMMA or PC.

[0042] The first total reflection surface 21 and the second total reflection surface 22 are parallel to each other and the second total reflection surface 22 is located below the first total reflection surface 21 . Both the first total reflection surface 21 and the second total reflection surface 22 form an angle of 45° with the incident light.

[0043] The third total reflection surface 23 and the fourth total reflection surface 24 are parallel to each other, and both the third total reflection surface 23 and the fourth total reflection surface 24 form an angle of 45° with the incident light; the fifth total reflection surface 25 and the sixth total reflection surface 26 are parallel to each other, and both the fifth total reflection surface 25 and the sixth total reflection surface 26 form an angle of 45° with the incident light.

[0044] A concave cavity 7 is formed between the first reflective structure and the second reflective structure. The first total reflection surface 21 is located on a side of the concave cavity 7 away from the first light incident portion 1 .

[0045] The first total reflection surface 21 and the second total reflection surface 22 have the same projection length in the horizontal direction.

[0046] The third total reflection surface 23 and the fifth total reflection surface 25 have the same projection length in the vertical direction; the fourth total reflection surface 24 and the sixth total reflection surface 26 have the same projection length in the vertical direction.

[0047] The distance between the light-emitting surface of the first light incident portion 1 and the second total reflection surface 22 is L1, the horizontal projection length of the second total reflection surface 22 is L2, the horizontal projection length of the third total reflection surface 23 is L3, and the distance from the third total reflection surface 23 to the upper end of the first total reflection surface 21 is L4, where L1 = L2 = L3 = L4. This design ensures that the optical path of the light emitted by the LED is the same in both the horizontal and vertical directions. In other words, the light emitted by the LED undergoes both horizontal and vertical total reflection and reaches the first light-emitting surface 3 simultaneously, achieving good uniformity and preventing issues with bright and dark light.

[0048] The first light-concentrating structure 31 has a convex curved surface, and the second light-concentrating structure 41 has a concave curved surface.

[0049] The second light emitting surface 6 is provided with a light distribution pattern, a first total reflection surface 21, a second total reflection surface 22, a third total reflection surface 23, a fourth total reflection surface 24, a fifth total reflection surface 25 and a sixth total reflection surface 26

[0050] A vehicle lamp comprises the aforementioned LED extremely narrow light emitting large-pitch thick-walled component.

[0051] Figure 8 This is the vertical light path diagram of the thick-walled parts with large spacing and extremely narrow light output of LED in this utility model. Figure 9 This is a light path diagram in the horizontal direction of a thick-walled part with a large spacing and extremely narrow light output of an LED in the utility model.

[0052] Depend on Figure 8 and Figure 9 It can be seen that the first total reflection portion 2 includes a reflective structure that can bend the light emitted from the first light incident portion 1 horizontally left and right and vertically up and down. In other words, the first total reflection surface 21 and the second total reflection surface 22 bend and reflect the light emitted from the first light incident portion 1 vertically up and down, and the first reflective structure and the second reflective structure bend and reflect the light emitted from the first light incident portion 1 horizontally left and right (the first reflective structure is used to bend the light to the left, while the second reflective structure is used to bend the light to the right).

[0053] The vertical light emitted from the first light incident part 1 is totally reflected twice by the first total reflection surface 21 and the second total reflection surface 22 and then emitted in parallel. The horizontal left light emitted from the first light incident part 1 is totally reflected twice by the third total reflection surface 23 and the fourth total reflection surface 24 and then emitted in parallel. The horizontal right light emitted from the first light incident part 1 is totally reflected twice by the fifth total reflection surface 25 and the sixth total reflection surface 26 and then emitted in parallel. All light rays in the total reflection system have the same number of total reflections, which is two. This ensures that all light paths are the same, making the emitted light more uniform. Light rays bent in different directions are ultimately emitted from the same first light-emitting surface 3.

[0054] In this embodiment, each light-guiding unit I is provided with four first light-focusing structures 31. The first light-focusing structures 31 focus the parallel light rays after being bent in different directions on the focal point O to form a bright light spot. Each light-guiding unit I forms four bright light spots. The light from the focal point O passes through the second light-focusing structure 41 and enters the second light-entering portion 4. The second light-focusing structure 41 will focus the vertical light to the focal point. After focusing on the focal point, it will be refracted to the upper and lower inclined side walls of the second total reflection portion 5 for total reflection. At the same time, the second light-focusing structure 41 will diffuse the horizontal light and disperse it to the left and right inclined side walls of the second total reflection portion 5 for reflection. The second light-focusing structure 41 and the second total reflection portion 5 work together to improve the uniformity of lighting, and can also make the angle of the emitted light relatively concentrated, thereby improving the energy utilization rate of the light source, while taking into account the extremely narrow light-emitting effect of the second light-emitting surface 6.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thick-walled LED component with a large spacing and extremely narrow light output, characterized by: The invention comprises a front thick-walled member (100) and a rear thick-walled member (200) arranged front and back, wherein the rear thick-walled member (200) comprises two or more light guide units I arranged side by side, and each light guide unit I comprises a first light entrance portion (1), a first total reflection portion (2), and a first light exit surface (3) arranged in sequence from the light entrance side to the light exit side; The first light-emitting surface (3) comprises two or more first light-concentrating structures (31) distributed side by side, and the first light-concentrating structures (31) are curved surfaces; The front thick-walled member (100) comprises a second light-entering portion (4), a second total reflection portion (5), and a second light-emitting surface (6) arranged in sequence from the light-entering side to the light-emitting side, the second light-entering portion (4) being located outside the first light-emitting surface (3); and the wall thickness increases gradually from the second light-entering portion (4) to the second total reflection portion (5); The second light entrance portion (4) is provided with a plurality of V-shaped grooves, which divide the second light entrance portion (4) into two or more light guide units II that are arranged side by side. The light entrance surface of the light guide unit II is provided with a second light focusing structure (41), and the second light focusing structure (41) corresponds one-to-one to the first light focusing structure (31).

2. The LED extremely narrow light output large-pitch thick-walled component according to claim 1, characterized in that: The first total reflection portion (2) comprises a first total reflection surface (21), a second total reflection surface (22), a first reflection structure and a second reflection structure, wherein the first total reflection surface (21) and the second total reflection surface (22) are sequentially arranged along the vertical propagation direction of the light path; the first reflection structure and the second reflection structure are horizontally and bilaterally symmetrically arranged; the first reflection structure comprises a third total reflection surface (23) and a fourth total reflection surface (24) along the horizontal propagation direction of the light path, and the second reflection structure comprises a fifth total reflection surface (25) and a sixth total reflection surface (26) along the horizontal propagation direction of the light path.

3. The thick-walled component with large spacing and extremely narrow light output for LEDs according to claim 2, characterized in that: The first total reflection surface (21) and the second total reflection surface (22) are parallel to each other, and the second total reflection surface (22) is located below the first total reflection surface (21), and both the first total reflection surface (21) and the second total reflection surface (22) form an angle of 40 to 50 degrees with the incident light; The third total reflection surface (23) and the fourth total reflection surface (24) are parallel to each other, and both the third total reflection surface (23) and the fourth total reflection surface (24) form an angle of 40 to 50 degrees with the incident light; The fifth total reflection surface (25) and the sixth total reflection surface (26) are parallel to each other, and both the fifth total reflection surface (25) and the sixth total reflection surface (26) form an angle of 40 to 50 degrees with the incident light; The angle formed between the third total reflection surface (23) and the incident light is the same as the angle formed between the fifth total reflection surface (25) and the incident light.

4. The thick-walled component with large spacing and extremely narrow light output for LEDs according to claim 2, characterized in that: A recessed cavity (7) is formed between the first reflective structure and the second reflective structure, and the first total reflection surface (21) is located on a side of the recessed cavity (7) facing away from the first light incident portion (1).

5. The LED extremely narrow light output large-pitch thick-walled component according to claim 2, characterized in that: The projection lengths of the first total reflection surface (21) and the second total reflection surface (22) in the horizontal direction are the same.

6. The thick-walled component with large spacing and extremely narrow light output for LEDs according to claim 2, characterized in that: The projection lengths of the third total reflection surface (23) and the fifth total reflection surface (25) in the vertical direction are the same; the projection lengths of the fourth total reflection surface (24) and the sixth total reflection surface (26) in the vertical direction are the same.

7. The thick-walled component with large spacing and extremely narrow light output for LEDs according to claim 2, characterized in that: The distance from the light-emitting surface of the first light incident portion (1) to the second total reflection surface (22) is L1, the projection length of the second total reflection surface (22) in the horizontal direction is L2, the projection length of the third total reflection surface (23) in the horizontal direction is L3, and the distance from the third total reflection surface (23) to the upper end of the first total reflection surface (21) is L4, where L1=L2=L3=L4.

8. The thick-walled component with large spacing and extremely narrow light output for LEDs according to claim 1, characterized in that: The first light-concentrating structure (31) is a convex curved surface, and the second light-concentrating structure (41) has a concave curved surface.

9. The LED extremely narrow light output large-pitch thick-walled component according to claim 1, characterized in that: The second light-emitting surface (6) is provided with a light distribution pattern.

10. A vehicle lamp, characterized in that: The invention comprises the thick-walled part with large spacing and extremely narrow light output of LED as claimed in any one of claims 1 to 9.

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