Light supplementing structure of automobile lamp

Abstract

The utility model discloses an automobile lamp light supplementing structure which comprises a lamp body, a light guide support installed in the lamp body, a light guide installed on the light guide support, an inner light distribution mirror installed at the front end of the lamp body and located at the front end of the light guide, and an outer light distribution mirror installed on the outer side of the inner light distribution mirror. The outer lens covers the light outlet, the part, covering the light outlet, of the outer lens is a light transmitting part, the diameter of the light guide is smaller than the longitudinal size of the light outlet, a first inner wall which is in butt joint with the light guide and located on the upper side of the light guide is arranged in the lamp body, and the first inner wall is located on the rear side of the inner lens and the light outlet. The first inner wall is provided with a first optical structure. The first optical structure on the first inner wall in the lamp body can secondarily utilize stray light and gather and reflect the stray light to an effective light-emitting area, so that partial brightness can be increased in a dark area, and the problems encountered in the design of the automobile lamp are solved.

Description

Technical field:

[0001] The utility model relates to the technical field of automobile lamps, in particular to a fill light structure of an automobile lamp. Background technology:

[0002] With the technological progress of automotive lamps and the development of LED technology, the design of automotive lamps has become more free. In order to achieve better lighting and visual effects, through-type lamps with more slender lamp body shapes have also emerged. This type of lamp can choose the optical solution of light guide strips, and the strip light guide uses LED as the light source, which has the advantage of high efficiency. Compared with traditional light bulbs, LEDs have higher luminous efficiency and can provide brighter light while consuming less energy. Light guides can distribute the brightness of the light source to the surface of the lamp. This range is limited. When observing the lamp from the rear of the vehicle body, the visible rotation angle of the high brake light in the Z direction of the coordinate axis is ±10°. As the effects of car lights are becoming more and more complex and given more and more functions, the space for lamps is getting smaller and smaller. Narrow openings for luminous functions have become a trend. In lamp design, it is often encountered that the light outlet of the external mirror is wide, that is, the size of the light outlet of the external mirror is larger than the diameter of the light guide. In optical systems, optics are often used to complete the optical function of narrow openings. Due to the diameter of the light guide (generally 6-9mm in diameter) and the small luminous angle that the light guide teeth can diffuse, the light guide cannot fill the entire luminous area when viewed straight or up and down, resulting in insufficient brightness in the upper, lower, left and right areas of the luminous surface.

[0003] For example, Figure 1 As shown, the diameter of the light guide 101 is 8 mm, and the light outlet supported by the light guide 101 is in the range of 8 mm and has a luminous angle of 10° up and down, while the light outlet 103 of the external light distribution lens 102 has a size of 13.8 mm, which has exceeded the size of the light outlet supported by the light guide. Therefore, when the lamp is lit, the area of ​​5.8 mm above and below the light outlet supported by the light guide is darker, that is, the light guide cannot fill the entire luminous area.

[0004] In view of this, the inventor proposes the following technical solution. Utility model content:

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a fill light structure for an automobile lamp.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: the automobile lamp fill light structure includes a lamp body, a light guide bracket installed in the lamp body, a light guide installed on the light guide bracket, an inner light distribution mirror installed at the front end of the lamp body and located at the front end of the light guide, and an outer light distribution mirror installed outside the inner light distribution mirror, the inner light distribution mirror has a light outlet, the outer light distribution mirror covers the light outlet, and the part of the outer light distribution mirror covering the light outlet is a light-transmitting part, the diameter of the light guide is smaller than the longitudinal dimension of the light outlet, a first inner wall connected with the light guide and located on the upper side of the light guide is arranged in the lamp body, the first inner wall is located at the rear side of the inner light distribution mirror and the light outlet, and the first inner wall is provided with a first optical structure for gathering stray light and reflecting the stray light to the light outlet to increase the effective light-emitting area.

[0007] Furthermore, in the above technical solution, the first optical structure is a concave-convex optical texture arranged on the first inner wall.

[0008] Furthermore, in the above technical solution, the first optical structure is an aluminum-plated reflective surface arranged on the first inner wall.

[0009] Furthermore, in the above technical solution, the first inner wall includes a vertical inclined surface connected to the light guide and a horizontal inclined surface located at the upper end of the vertical inclined surface, and both the vertical inclined surface and the horizontal inclined surface are provided with the first optical structure.

[0010] Furthermore, in the above technical solution, the front end of the light guide bracket is provided with an inclined surface and a longitudinal surface which are connected to the light guide and located at the lower side of the light guide, and the inclined surface and the longitudinal surface are both provided with a second optical structure for collecting stray light and reflecting the stray light to the light outlet to increase the effective light emitting area.

[0011] Furthermore, in the above technical solution, the second optical structure is a concave-convex optical texture arranged on the inclined surface and the longitudinal surface.

[0012] Furthermore, in the above technical solution, the second optical structure is an aluminum-plated reflective surface arranged on the inclined surface and the longitudinal surface.

[0013] Furthermore, in the above technical solution, a first groove adapted to the shape of the upper end of the light guide is provided in the lamp body, and a second groove adapted to the shape of the lower end of the light guide is provided on the light guide bracket, and a mounting position for fixing the light guide is formed between the first groove and the second groove, and the upper and lower ends of the light guide are respectively embedded in the first groove and the second groove and are confined in the mounting position.

[0014] Furthermore, in the above technical solution, the light guide is arc-shaped.

[0015] Furthermore, in the above technical solution, a plurality of light guide teeth are arranged inside the light guide, and an arcuate light emitting surface is formed outside the light guide, and the arcuate light emitting surface is connected to the first inner wall and the inclined surface of the front end of the light guide bracket.

[0016] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: when the automobile lamp is lit, the light is transmitted into the light guide and guided by the light guide. The light guided by the light guide can pass through the light outlet and emit to the outside through the light-transmitting portion. Since the first optical structure is added to the first inner wall in the lamp body, the stray light can be gathered by the first optical structure and reused to reflect the gathered stray light to the light outlet, thereby increasing the effective light-emitting area and reducing the darker area formed on the upper and lower sides of the light outlet beyond the range supported by the light guide. That is to say, the first optical structure on the first inner wall in the lamp body can reuse the stray light and gather and reflect the stray light to the effective light-emitting area, so that the darker area can increase part of the brightness, thereby improving such problems encountered in the design of automobile lamps. Description of the drawings:

[0017] Figure 1 It is the assembly drawing of the lamp body, light guide and external light distribution mirror in the existing automobile lamp;

[0018] Figure 2 It is a structural diagram of the utility model;

[0019] Figure 3 It is a structural diagram of the light guide in the utility model. Specific implementation method:

[0020] The utility model is further described below in conjunction with specific embodiments and drawings.

[0021] See Figure 2-3 As shown, a fill light structure of an automobile lamp includes a lamp body 1, a light guide bracket 2, a light guide bracket 2, an inner light distribution mirror 4 and an outer light distribution mirror 5.

[0022] The light guide 3 is installed on the light guide bracket 2, and the light guide bracket 2 is used to support the light guide 3 and is installed in the lamp body 1, and can fix the light guide 3 in the lamp body 1. An LED light board is arranged in the lamp body 1, and the LED on the LED light board is installed corresponding to the light guide 3, so that after the LED is lit, its light is transmitted to the light guide 3, and the light is guided by the light guide 3; the inner light distribution mirror 4 is installed at the front end of the lamp body 1 and located at the front end of the light guide 3, and the outer light distribution mirror 5 is installed outside the inner light distribution mirror 4, wherein the inner light distribution mirror 4 has a light outlet 41, and the outer light distribution mirror 5 covers the light outlet 41, and the part of the outer light distribution mirror 5 covering the light outlet 41 is a light transmission part 51, so that the light guided out of the light guide 3 can pass through the light outlet 41 and be emitted to the outside through the light transmission part 51.

[0023] The diameter of the light guide 3 is smaller than the longitudinal dimension of the light outlet 41, and the light emitting angle of the light guide 3 is greater than 20°. Specifically, in this embodiment, the diameter of the light guide 3 is 8mm, and the light outlet supported by the light guide 3 is in the range of 8mm and has a light emitting angle of 10° up and down (i.e., the maximum light emitting angle is 20°), while the size of the light outlet 41 of the inner light distribution mirror 4 is 13.8mm, which has exceeded the size of the light outlet supported by the light guide. Therefore, when the lamp is lit, the 5.8mm area beyond the upper and lower sides of the light outlet supported by the light guide is darker, that is, the light guide cannot fill the entire light emitting area. In order to solve this problem, the utility model makes the following improvements: a first inner wall 11 is provided in the lamp body 1, which is connected to the light guide 3 and is located on the upper side of the light guide 3. The first inner wall 11 is located at the rear side of the inner light distribution mirror 4 and the light outlet 41. The first inner wall 11 is provided with a first optical structure 12 for collecting stray light and reflecting the stray light to the light outlet 41 to increase the effective light emitting area. When the automobile lamp is lit, the light is transmitted into the light guide 3 and guided by the light guide 3. The light guided by the light guide 3 can pass through the light outlet 41 and be emitted to the outside through the light-transmitting portion 51. Since the first optical structure 12 is added to the first inner wall 11 in the lamp body 1, the stray light can be gathered by the first optical structure 12 and reused to reflect the gathered stray light to the light outlet 41, thereby increasing the effective light-emitting area and reducing the darker area formed on the upper and lower sides of the light outlet beyond the support range of the light guide 3. In other words, the first optical structure 12 on the first inner wall 11 in the lamp body 1 can reuse the stray light and gather and reflect the stray light to the effective light-emitting area, so that the darker area can increase part of the brightness, thereby improving such problems encountered in the design of automobile lamps.

[0024] The size of the light guide 3 and the size of the light outlet 41 are only preferred embodiments of this embodiment, and are not exclusive. The size of the light guide 3 can also be any value between 6 and 9 mm, but the effects achieved are basically the same, and will not be described in detail here.

[0025] The first optical structure 12 is a concave-convex optical grain arranged at the first inner wall 11, and the concave-convex optical grain can effectively gather stray light and reflect it out. Alternatively, the first optical structure 12 is an aluminum-plated reflective surface arranged at the first inner wall 11, and the aluminum-plated reflective surface can effectively gather and reflect stray light out. It is worth mentioning that the utility model is not only limited to high brake lights in the design of vehicle lights, but also involves the light emitted by the luminous function of narrow openings (i.e., narrow light outlets). Lamp designs that cannot fill the entire luminous area are all suitable for improvement by the utility model. At the same time, when looking from the outside of the lamp to the inside of the lamp, the local aluminum-plated reflective surface can improve the static appearance when looking down and looking up, or the concave-convex optical grain is added to block the material differences and installation errors caused by the installation of the light guide and the surrounding parts.

[0026] The first inner wall 11 includes a vertical inclined surface 111 connected to the light guide 3 and a horizontal inclined surface 112 located at the upper end of the vertical inclined surface 111. The vertical inclined surface 111 and the horizontal inclined surface 112 are both provided with the first optical structure 12, so that the first inner wall 11 has a first optical structure 12 with a larger area, so that the stray light can be better gathered and reused to reflect the gathered stray light to the light outlet 41, thereby more effectively increasing the effective light-emitting area.

[0027] On the basis of the above, the front end of the optical waveguide bracket 2 is provided with an inclined surface 21 and a longitudinal surface 22 which are connected to the optical waveguide 3 and are located at the lower side of the optical waveguide 3. The inclined surface 21 and the longitudinal surface 22 are both provided with a second optical structure 23 for gathering stray light and reflecting the stray light to the light outlet 41 to increase the effective light-emitting area, so that the stray light can be better gathered and reused to reflect the gathered stray light to the light outlet 41, thereby more effectively increasing the effective light-emitting area, thereby minimizing the area of ​​the darker area formed on the upper and lower sides of the light outlet beyond the support range of the optical waveguide 3, and even avoiding the appearance of the darker area.

[0028] Among them, the second optical structure 23 is a concave-convex optical texture arranged at the inclined surface 21 and the longitudinal surface 22, and the concave-convex optical texture can effectively gather stray light and reflect the stray light. Alternatively, the second optical structure 23 is an aluminum-plated reflective surface arranged at the inclined surface 21 and the longitudinal surface 22, and the aluminum-plated reflective surface can effectively gather and reflect the stray light. It is worth mentioning that when looking from the outside of the lamp to the inside of the lamp, the local aluminum-plated reflective surface can improve the static appearance when looking down and up, or increase the concave-convex optical texture to block the material differences and installation errors caused by the installation of the light guide and the surrounding parts.

[0029] The lamp body 1 is provided with a first groove 13 matching the shape of the upper end of the light guide 3, and the light guide bracket 2 is provided with a second groove 24 matching the shape of the lower end of the light guide 3. A mounting position for fixing the light guide 3 is formed between the first groove 13 and the second groove 24. The upper and lower ends of the light guide 3 are respectively embedded in the first groove 13 and the second groove 24 and are confined in the mounting position. The assembly structure is stable, ensuring that the light guide 3 is stably installed in the lamp body 1. The light guide bracket 2 and the lamp body 1 are fixedly installed by buckles, or installed by locking screws.

[0030] The light guide 3 is arc-shaped, which can be used in lamps with arc-shaped light output.

[0031] The light guide 3 is provided with a plurality of light guide teeth 31 on the inner side, and an arc-shaped light emitting surface 32 is formed on the outer side of the light guide 3. The light guide teeth 31 have a good guiding effect and guide the light to the arc-shaped light emitting surface 32, and the light is emitted from the arc-shaped light emitting surface 32, thereby improving the light guiding effect. The arc-shaped light emitting surface 32 is connected to the first inner wall 11 and the inclined surface 21 at the front end of the light guide bracket 2.

[0032] To sum up, when the automobile lamp is lit, the light is transmitted into the light guide 3 and guided by the light guide 3. The light guided by the light guide 3 can pass through the light outlet 41 and be emitted to the outside through the light-transmitting portion 51. Since the first optical structure 12 is added to the first inner wall 11 in the lamp body 1, the stray light can be gathered by the first optical structure 12 and reused to reflect the gathered stray light to the light outlet 41, thereby increasing the effective light-emitting area and reducing the darker area formed on the upper and lower sides of the light outlet beyond the support range of the light guide 3. In other words, the first optical structure 12 on the first inner wall 11 in the lamp body 1 can reuse the stray light and gather and reflect the stray light to the effective light-emitting area, so that the darker area can increase part of the brightness, thereby improving such problems encountered in the design of automobile lamps.

[0033] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A fill light structure for an automobile lamp, comprising a lamp body (1), a light guide bracket (2) installed in the lamp body (1), a light guide (3) installed on the light guide bracket (2), an inner light distribution mirror (4) installed at the front end of the lamp body (1) and located at the front end of the light guide (3), and an outer light distribution mirror (5) installed outside the inner light distribution mirror (4), the inner light distribution mirror (4) having a light outlet (41), the outer light distribution mirror (5) covering the light outlet (41), and the portion of the outer light distribution mirror (5) covering the light outlet (41) being a light-transmitting portion (51), the diameter of the light guide (3) being smaller than the longitudinal dimension of the light outlet (41), and characterized in that: The lamp body (1) is provided with a first inner wall (11) which is connected to the light guide (3) and is located on the upper side of the light guide (3); the first inner wall (11) is located behind the inner light distribution mirror (4) and the light outlet (41); and the first inner wall (11) is provided with a first optical structure (12) for collecting stray light and reflecting the stray light to the light outlet (41) to increase the effective light emitting area.

2. The automobile lamp fill light structure according to claim 1, characterized in that: The first optical structure (12) is a concave-convex optical texture arranged on the first inner wall (11).

3. The automobile lamp fill light structure according to claim 1, characterized in that: The first optical structure (12) is an aluminum-plated reflective surface arranged on the first inner wall (11).

4. The automobile lamp fill light structure according to any one of claims 1 to 3, characterized in that: The first inner wall (11) comprises a vertical inclined surface (111) connected to the light guide (3) and a horizontal inclined surface (112) located at the upper end of the vertical inclined surface (111), and both the vertical inclined surface (111) and the horizontal inclined surface (112) are provided with the first optical structure (12).

5. The automobile lamp fill light structure according to any one of claims 1 to 3, characterized in that: The front end of the light guide bracket (2) is provided with an inclined surface (21) and a longitudinal surface (22) which are butted against the light guide (3) and located at the lower side of the light guide (3); the inclined surface (21) and the longitudinal surface (22) are both provided with a second optical structure (23) for collecting stray light and reflecting the stray light to a light outlet (41) to increase an effective light emitting area.

6. The automobile lamp fill light structure according to claim 5, characterized in that: The second optical structure (23) is a concave-convex optical texture arranged on the inclined surface (21) and the longitudinal surface (22).

7. The automobile lamp fill light structure according to claim 5, characterized in that: The second optical structure (23) is an aluminum-plated reflective surface arranged on the inclined surface (21) and the longitudinal surface (22).

8. The automobile lamp fill light structure according to claim 5, characterized in that: The lamp body (1) is provided with a first groove (13) adapted to the shape of the upper end of the light guide (3); the light guide bracket (2) is provided with a second groove (24) adapted to the shape of the lower end of the light guide (3); a mounting position for fixing the light guide (3) is formed between the first groove (13) and the second groove (24); the upper and lower ends of the light guide (3) are respectively embedded in the first groove (13) and the second groove (24), and are confined in the mounting position.

9. The automobile lamp fill light structure according to claim 5, characterized in that: The light guide (3) is arc-shaped.

10. The automobile lamp fill light structure according to claim 9, characterized in that: A plurality of light guide teeth (31) are arranged on the inner side of the light guide (3), and an arc-shaped light emitting surface (32) is formed on the outer side of the light guide (3), and the arc-shaped light emitting surface (32) is butted against the first inner wall (11) and the inclined surface (21) at the front end of the light guide bracket (2).

Images