An anti-glare lens structure for a tunnel light

Abstract

This utility model provides an anti-glare lens structure for tunnel lights, comprising: a lens assembly, wherein the lens assembly includes a lens body, a closed surface, an upper light-emitting surface, a lower light-emitting surface, and a side light-emitting surface. The closed surface is located on the right side of the lens body. Compared with the prior art, this utility model has the following beneficial effects: by setting the lens assembly, the lens body is set as an asymmetrical structure with a curved surface design. The closed surface on the side opposite the vehicle completely blocks the light, so that the driver's line of sight does not directly contact the light. Instead, the light passing through the lens body shines obliquely in the direction of vehicle movement, which is equivalent to physically cutting off the path of the light directly hitting the driver's eyes. Anti-glare is achieved while meeting basic lighting requirements. By setting the lens body, a redundant anti-transmission structure is also set on the closed surface side of the lens body to ensure that the light output on this side is zero.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel lighting technology, and specifically relates to an anti-glare lens structure for tunnel lights. Background Technology

[0002] Tunnel lighting environments are characterized by their enclosed nature, low illumination, and frequent visual adaptation. When vehicles travel inside a tunnel, the driver's line of sight is generally parallel to the tunnel surface, pointing straight ahead. In traditional tunnel lights, any portion of the light emitted horizontally or nearly horizontally can easily enter the driver's eyes directly, creating direct glare. Glare can cause localized oversaturation of the retina, leading to temporary blindness or visual fatigue, and is one of the main causes of tunnel traffic accidents. Existing technologies, such as those with shading angle designs, use extended light shields or grilles to reduce the visible angle of the light-emitting surface in the driver's line of sight to less than a specified threshold (e.g., 30°). However, these solutions have limitations: the shading angle only blocks light within a specific angle range, leaving some large-angle scattered light still within the field of vision; the light shield or grille is an independent add-on, increasing cost and reducing luminous efficiency (some effective light is also blocked), resulting in shortcomings in practical use.

[0003] In summary, we hope to propose a new structure to solve the aforementioned technical problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an anti-glare lens structure for tunnel lights, and solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: an anti-glare lens structure for a tunnel light, comprising: a lens assembly, wherein the lens assembly includes a lens body, a sealing surface, an upper light-emitting surface, a lower light-emitting surface and a side light-emitting surface, and the sealing surface is located in the right side region of the lens body itself;

[0006] The upper light-emitting surface is located on the upper side of the lens body, the lower light-emitting surface is located on the lower side of the lens body, the side light-emitting surface is located between the upper and lower light-emitting surfaces of the lens body, and the lens body is offset 80° to the left relative to the lens axis in the left-right direction.

[0007] In a preferred embodiment, the lens assembly further includes a lens fixing plate, which is fixedly connected to the top of the lens body.

[0008] In a preferred embodiment, the lens assembly is installed in an inclined structure, so that the tunnel lights on both sides inside the tunnel are arranged symmetrically to achieve illumination inside the tunnel.

[0009] In a preferred embodiment, the total upward and downward light emission angle of the lens body is 120°, and the single-sided light emission angle is 60°. The upper light emission surface of the lens body is tilted forward and upward at 5° to 15°, the lower light emission surface of the lens body is tilted forward and downward at 15° to 30°, and the side light emission surface of the lens body is tilted outward at 10° to 20°. The asymmetrical structure of the lens body ensures that light is emitted only from the top, bottom, and sides, without directly contacting the driver, thereby achieving anti-glare function.

[0010] As a preferred embodiment, the curvature design of the upper light-emitting surface makes the emitted light rays diverge, mainly illuminating the tunnel arch and the upper sidewalls, improving the overall brightness uniformity of the tunnel and alleviating the "black hole / white hole effect". The curvature design of the lower light-emitting surface makes the light rays converge on the tunnel surface, forming rectangular or elliptical light spots, which meet the requirements of road surface illumination and uniformity.

[0011] The light emitted from the side-emitting surface is used to supplement the lighting on both sides of the road surface, eliminating the "zebra stripe" pattern of alternating light and dark that is common in traditional tunnel lights, while illuminating the tunnel sidewalls and providing guidance information.

[0012] In a preferred embodiment, the geometry of the sealing surface is designed as a curved surface so that the angle between it and the internal light path of the lens is greater than the critical angle, forming a total reflection surface. A high-reflectivity aluminum film with a thickness of 50nm to 200nm is vacuum-deposited on the outer surface of the sealing surface, and a protective paint layer is also covered on the outermost side to prevent oxidation. The high-reflectivity aluminum film on the sealing surface allows the light to be completely reflected back into the lens and redistributed to other light-emitting surfaces.

[0013] In a preferred embodiment, a microprism array is fixedly connected to the inner surface of the lens body on the closed surface side to form a redundant light trap structure, ensuring that the light output on the right side is zero. A redundant light-blocking structure is also provided on the closed surface side of the lens body. The light is refracted back into the lens or diffused in different directions by this redundant microprism array, and is eventually absorbed or guided to other light-emitting surfaces, thereby ensuring that the light output on this side is zero and does not cause glare to the driver.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are:

[0015] By setting up a lens assembly, the lens body is designed with an asymmetrical structure and a curved surface. The side opposite the vehicle is a closed surface, which completely blocks the light, so that the driver's line of sight does not come into direct contact with the light. Instead, the light passing through the lens body shines obliquely in the direction of the vehicle's movement, which is equivalent to physically cutting off the path of the light directly hitting the driver's eyes, thus achieving anti-glare while meeting the basic lighting requirements.

[0016] By setting up the lens body, a redundant light-blocking structure is also set on the closed side of the lens body. The light is refracted back into the lens or diffused in different directions through this redundant microprism array, and is eventually absorbed or guided to other light-emitting surfaces, thereby ensuring that the light output on this side is zero and does not cause glare to the driver. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of an anti-glare lens for a tunnel light according to the present invention.

[0019] Figure 2 This is a schematic diagram of the bottom structure of an anti-glare lens structure for a tunnel light according to the present invention.

[0020] Figure 3 This is a partial cross-sectional schematic diagram of the anti-glare lens structure of a tunnel light according to the present invention.

[0021] Figure 4 This is a schematic diagram of the orientation of the anti-glare lens structure of a tunnel light according to this utility model.

[0022] In the figure, 100-lens assembly, 101-lens fixing plate, 102-lens body, 103-high reflectivity aluminum film, 104-protective paint layer, 105-microprism array. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 As the first embodiment of this utility model:

[0025] An anti-glare lens structure for a tunnel light includes: a lens assembly 100, which includes a lens body 102, a sealing surface, an upper light-emitting surface, a lower light-emitting surface, and a side light-emitting surface. The sealing surface is located in the right side region of the lens body 102 itself.

[0026] The upper light-emitting surface is located on the upper side of the lens body 102 itself, the lower light-emitting surface is located on the lower side of the lens body 102 itself, and the side light-emitting surface is located between the upper light-emitting surface and the lower light-emitting surface of the lens body 102. The lens body 102 is offset to the left by 80° relative to the lens axis in the left-right direction.

[0027] The lens assembly 100 also includes a lens fixing plate 101, which is fixedly connected to the top of the lens body 102.

[0028] The lens assembly 100 is installed with an inclined structure, which makes the tunnel lights on both sides of the tunnel interior symmetrically arranged to achieve illumination inside the tunnel.

[0029] The total upward and downward light emission angle of the lens body 102 is 120°, and the single-sided light emission angle is 60°. The upward light emission surface of the lens body 102 is tilted forward and upward at 5° to 15°, the downward light emission surface of the lens body 102 is tilted forward and downward at 15° to 30°, and the side light emission surface of the lens body 102 is tilted outward at 10° to 20°. The asymmetrical structure of the lens body 102 ensures that light is emitted only from the top, bottom, and sides, without directly contacting the driver, thus achieving anti-glare function.

[0030] The curvature design of the upper light-emitting surface makes the emitted light diverge, mainly illuminating the tunnel arch and the upper sidewalls, improving the overall brightness uniformity of the tunnel and mitigating the "black hole / white hole effect". The curvature design of the lower light-emitting surface makes the light converge on the tunnel surface, forming a rectangular or elliptical light spot, which meets the requirements of road surface illumination and uniformity.

[0031] The light emitted from the side-emitting surface is used to supplement the lighting on both sides of the road surface, eliminating the "zebra stripe" pattern of alternating light and dark that is common in traditional tunnel lights, while illuminating the tunnel sidewalls and providing guidance information.

[0032] The geometry of the sealing surface is designed as a curved surface so that the angle between it and the internal light path of the lens is greater than the critical angle, forming a total reflection surface. A high reflectivity aluminum metal film 103 with a thickness of 50nm to 200nm is vacuum-deposited on the outer surface of the sealing surface, and a protective paint layer 104 is also covered on the outermost surface to prevent oxidation. The high reflectivity aluminum metal film 103 set on the sealing surface ensures that the light is completely reflected back into the lens and redistributed to other light-emitting surfaces.

[0033] Specifically, regarding the lens assembly 100 involved in this utility model, when it is assembled with a tunnel light, the lens assembly 100 covers the light source. During propagation, the light can only be illuminated from the upper light-emitting surface, the lower light-emitting surface, and the side light-emitting surface, and cannot be illuminated from the closed surface (a high-reflectivity aluminum metal film 103 is vacuum-deposited on the outer side surface of the closed surface, and the outermost side is also covered with a protective paint layer 104 to prevent oxidation). The closed surface is located on the side opposite to the driver, that is, when the driver is driving the vehicle, his line of sight does not collide with the illuminated light. This is equivalent to physically cutting off the path of the light directly hitting the driver's eyes, completely avoiding the direct intersection of the light and the driver's line of sight, fundamentally reducing the glare value (UGR), and making the driver's visual environment more comfortable and safe.

[0034] In addition, the optical refraction / reflection structure of the lens body 102 precisely distributes the light from the light source to three directions. The curvature design of the upper light-emitting surface makes the emitted light diverge, mainly illuminating the tunnel arch and the upper sidewalls, improving the overall brightness uniformity of the tunnel and alleviating the "black hole / white hole effect". The curvature design of the lower light-emitting surface makes the light converge on the tunnel surface, forming a rectangular or elliptical light spot, which meets the requirements of road surface illumination and uniformity. The light emitted from the side light-emitting surface is used to supplement the illumination on both sides of the road surface, eliminating the "zebra stripe" alternating light and dark phenomenon commonly seen in traditional tunnel lights, while illuminating the tunnel sidewalls and providing guidance information.

[0035] Please see Figure 1 and Figure 3 As a second embodiment of this utility model:

[0036] A microprism array 105 is fixedly connected to the inner side of the lens body 102 on the closed surface side to form a redundant light trap structure, ensuring that the light output on the right side is zero. A redundant light-blocking structure is also provided on the closed surface side of the lens body. The light is refracted back into the lens or diffused in different directions by the redundant microprism array 105, and finally absorbed or guided to other light-emitting surfaces, thereby ensuring that the light output on this side is zero and does not cause glare to the driver.

[0037] Based on the first embodiment described above, a redundant light-blocking structure is further provided on the closed side of the lens body. This redundant microprism array 105 refracts the light back into the lens or diffuses it in different directions, and it is eventually absorbed or guided to other light-emitting surfaces, thereby ensuring that the light output on this side is zero and does not cause glare to the driver.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anti-glare lens structure for a tunnel lamp, comprising: The lens assembly (100) is characterized in that: the lens assembly (100) includes a lens body (102), a sealing surface, an upper light-emitting surface, a lower light-emitting surface and a side light-emitting surface, wherein the sealing surface is located in the right side region of the lens body (102) itself; The upper light-emitting surface is located on the upper side of the lens body (102), the lower light-emitting surface is located on the lower side of the lens body (102), the side light-emitting surface is located between the upper light-emitting surface and the lower light-emitting surface of the lens body (102), and the lens body (102) is offset to the left by 80° relative to the lens axis in the left-right direction.

2. The anti-glare lens structure for a tunnel lamp according to claim 1, wherein: The lens assembly (100) also includes a lens fixing plate (101), which is fixedly connected to the top of the lens body (102).

3. The anti-glare lens structure for a tunnel lamp according to claim 2, wherein: The lens assembly (100) is installed in an inclined structure, so that the tunnel lights on both sides inside the tunnel are arranged in a symmetrical structure to achieve lighting inside the tunnel.

4. The anti-glare lens structure for a tunnel lamp according to claim 3, wherein: The total upward and downward light emission angle of the lens body (102) is 120°, and the single-sided light emission angle is 60°. The upper light emission surface of the lens body (102) is tilted forward and upward at 5° to 15°, the lower light emission surface of the lens body (102) is tilted forward and downward at 15° to 30°, and the side light emission surface of the lens body (102) is tilted outward at 10° to 20°.

5. The anti-glare lens structure for a tunnel lamp according to claim 4, wherein: The curvature design of the upper light-emitting surface makes the emitted light rays diverge, mainly illuminating the tunnel arch and the upper sidewalls, improving the overall brightness uniformity of the tunnel and alleviating the "black hole / white hole effect". The curvature design of the lower light-emitting surface makes the light rays converge on the tunnel surface, forming rectangular or elliptical light spots, which meet the requirements of road surface illumination and uniformity. The light emitted from the side-emitting surface is used to supplement the lighting on both sides of the road surface, eliminating the "zebra crossing" alternating light and dark phenomenon commonly seen in traditional tunnel lights, while illuminating the tunnel sidewalls and providing guidance information.

6. The anti-glare lens structure for a tunnel light as described in claim 1, characterized in that: The geometry of the closed surface is designed as a curved surface so that the angle between it and the internal optical path of the lens is greater than the critical angle, forming a total reflection surface. A high reflectivity aluminum film (103) with a thickness of 50nm to 200nm is vacuum-deposited on the outer surface of the closed surface, and a protective paint layer (104) is also covered on the outermost side to prevent oxidation.

7. The anti-glare lens structure of a tunnel lamp according to claim 1, wherein: The inner side of the lens body (102) is also fixedly connected to a microprism array (105) on the closed side, which is used to form a redundant light trap structure to ensure that the light output on the right side is zero.

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