An adaptive dimming intelligent tunnel lamp and a mounting method thereof

Abstract

The application discloses a self-adaptive light-adjusting intelligent tunnel lamp and a mounting method thereof, which comprises a lamp body and a brightness adjusting assembly, wherein the brightness adjusting assembly comprises a center cylinder, a driving hydraulic cylinder and arc-shaped baffles; the center cylinder is fixed to a mounting position of the lamp body; a plurality of arc-shaped baffles are arranged along the circumferential direction of the lower end of the center cylinder, and the roots of the arc-shaped baffles are hinged to the lower end of the center cylinder; and the driving hydraulic cylinder drives the arc-shaped baffles to swing around the roots to adjust the light-emitting area of the lamp body. By arranging a plurality of arc-shaped baffles along the circumferential direction of the lower end of the center cylinder and configuring the driving hydraulic cylinder corresponding to the arc-shaped baffles, independent driving control of the baffles in each direction is realized. Each arc-shaped baffle can independently swing around the hinged point of the root, so that the light-emitting area in each direction can be differentially adjusted according to the actual lighting requirements of different directions of the tunnel.

Description

Technical Field

[0001] This invention relates to an adaptive dimming smart tunnel light and its installation method. Background Technology

[0002] Tunnels are enclosed passageways with relatively closed and unique internal lighting environments. Natural light from the outside cannot directly illuminate the tunnel interior. To ensure the safety of vehicles and pedestrians, continuous tunnel lighting is necessary throughout the tunnel. Currently, most existing tunnel lights use fixed-power lighting or a single-level dimming mode, offering only a uniform adjustment of overall brightness. They cannot provide precise or differentiated dimming based on local lighting differences or variations in light intensity between the inside and outside of the tunnel.

[0003] Meanwhile, traditional tunnel lights lack a precise light output and blocking adjustment structure, and the exposed area of ​​the light cannot be flexibly controlled. This easily leads to problems such as excessively bright daytime lighting and insufficient nighttime lighting, which not only wastes a lot of electricity resources, but also causes white hole effect and black hole effect due to sudden changes in light, affecting the driver's visual adaptability and posing a traffic safety hazard. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides an adaptive dimming intelligent tunnel light and its installation method. By setting multiple arc-shaped baffles arranged circumferentially along the lower end of the central cylinder and configuring corresponding hydraulic cylinders for each baffle, independent drive control of the baffles in each direction is achieved. Each arc-shaped baffle can swing independently around its root hinge point, thereby allowing for differentiated adjustment of the light-emitting area in each direction according to the actual lighting needs of different locations within the tunnel. When the multiple arc-shaped baffles are fully closed, they form a sealed cavity enclosing the lamp body, effectively protecting the lamp body from the corrosive effects of humid air, dust, and vehicle exhaust fumes within the tunnel during non-operational states, extending the lamp's lifespan, and preventing light pollution caused by light leakage during non-operational states.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an adaptive dimming intelligent tunnel light, including a lamp body and a brightness adjustment component, wherein the brightness adjustment component includes a central cylinder, a driving hydraulic cylinder and an arc-shaped baffle;

[0006] The central cylindrical body is fixed to the mounting position of the lamp body;

[0007] Multiple arc-shaped baffles are arranged along the lower circumference of the central cylinder, and the root of each arc-shaped baffle is hinged to the lower end of the central cylinder.

[0008] The driving hydraulic cylinder corresponds one-to-one with the arc-shaped baffle, and the two ends of the driving hydraulic cylinder are respectively hinged to the upper part of the central cylinder and the upper part of the corresponding arc-shaped baffle.

[0009] The hydraulic cylinder drives the arc-shaped baffle to swing around its root to adjust the light-emitting area of ​​the lamp body.

[0010] As a preferred embodiment of the present invention, five arc-shaped baffles are provided, and the five arc-shaped baffles are evenly arranged along the lower circumferential direction of the central cylinder.

[0011] As a preferred embodiment of the present invention, both ends of the driving hydraulic cylinder are provided with hinge joints, the upper part of the central cylinder is provided with a hinge support, and the upper part of the arc-shaped baffle is provided with a hinge lug; the driving hydraulic cylinder is hinged to the hinge support and the hinge lug respectively through the hinge joints.

[0012] As a preferred embodiment of the present invention, when the multiple arc-shaped baffles are fully closed, they enclose and form a sealed cavity that covers the lamp body.

[0013] As a preferred embodiment of the present invention, it further includes a height adjustment component, wherein the lamp body is installed on the tunnel wall via the height adjustment component;

[0014] The height adjustment assembly includes a support plate, a motor, a drive wheel, a driven wheel, and a cable retraction / deployment mechanism; the support plate is fixed to the inner wall of the tunnel wall, the motor is fixed to the support plate, and the output end of the motor is connected to the drive wheel via a transmission.

[0015] As a preferred embodiment of the present invention, the driving wheel is installed on the inner side wall of the tunnel wall, the driven wheel is installed on the outer side wall of the tunnel wall, and the take-up and release cable is wound around the driving wheel and the driven wheel; a through hole is provided on the tunnel wall, and the take-up and release cable extends through the through hole to the outer side of the tunnel wall.

[0016] As a preferred embodiment of the present invention, a cable management clip is provided on the outer wall of the tunnel wall, and the cable retraction clip is located inside the cable management clip to maintain a taut state.

[0017] As a preferred embodiment of the present invention, the end of the retractable cable away from the driven wheel is connected to a lamp holder, the lamp body is fixed on the lamp holder, and the brightness adjustment component is fixed on the lower surface of the lamp holder.

[0018] As a preferred embodiment of the present invention, each of the arc-shaped baffles swings independently under the drive of the corresponding hydraulic cylinder, and the opening angles of the multiple arc-shaped baffles are different from each other.

[0019] This invention also provides a technical solution: an installation method for an adaptive dimming intelligent tunnel light, the specific steps of which are as follows:

[0020] S1. Equipment pre-fixing: Assemble the lamp body, brightness adjustment component, and height adjustment component of the intelligent tunnel light. Use the support plate, drive wheel, driven wheel, and cable winding and unwinding on the tunnel wall to complete the suspension and installation of the lamp body. Use cable management clips to straighten and tighten the cable winding and unwinding to ensure the overall stability of the equipment installation.

[0021] S2. Initial state calibration: Control multiple sets of drive hydraulic cylinders to start and stop synchronously, drive five arc-shaped baffles to swing around the hinge root of the lower end of the central cylinder, so that the multiple arc-shaped baffles are completely closed and form a sealed cavity covering the lamp body. At this time, the lamp body light is completely closed, and the dimming initial zero calibration is completed.

[0022] S3. Independent dimming in zones: Based on the real-time lighting brightness requirements of the tunnel, the extension and retraction of each drive hydraulic cylinder is controlled individually, which drives the corresponding arc-shaped baffle to swing independently, and adjusts the opening angle of each arc-shaped baffle as needed, so that multiple arc-shaped baffles form differentiated opening states.

[0023] S4. Precise control of light output: By changing the opening amplitude of each arc baffle, the light output area of ​​different directions of the lamp body is adjusted. Based on the correspondence between the degree of baffle opening and closing and the amount of light exposed, the overall light intensity of the tunnel light is adaptively adjusted.

[0024] S5. Steady-state maintenance and dynamic fine-tuning: After the lighting adjustment is completed, the extension and retraction stroke of each drive hydraulic cylinder is locked to keep the arc baffle open to stabilize the lighting brightness. At the same time, the angle of each arc baffle is finely adjusted in real time according to the changes in the tunnel ambient light to dynamically adapt to the tunnel lighting conditions.

[0025] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0026] By setting multiple arc-shaped baffles arranged circumferentially along the lower end of the central cylinder and configuring corresponding hydraulic cylinders for each baffle, independent drive control of the baffles in each direction is achieved. Each arc-shaped baffle can swing independently around its root hinge point, thereby allowing for differentiated adjustment of the light-emitting area in each direction according to the actual lighting needs of different locations in the tunnel. When the multiple arc-shaped baffles are fully closed, they can form a sealed cavity enclosing the lamp body, effectively protecting the lamp body from the corrosion of humid air, dust, and vehicle exhaust in the tunnel when not in operation, extending the lamp's lifespan, and preventing light pollution caused by light leakage when not in operation. The lamp body's lifting and lowering control is achieved by a wheel system structure consisting of a motor-driven drive wheel, a driven wheel, and a cable winding and unwinding mechanism. This structure places the drive motor inside the tunnel wall for easy daily maintenance and repair; the lifting and lowering of the lamp body is achieved by winding and unwinding the cable. Attached Figure Description

[0027] Figure 1 This is a first-view structural diagram of the entire invention;

[0028] Figure 2 This is a schematic diagram of the overall cable management card structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0030] Figure 4 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0031] Figure 5 This is a schematic diagram of the overall structure of the drive hydraulic cylinder of the present invention;

[0032] Figure 6 This is a schematic diagram of the overall hinged support structure of the present invention;

[0033] Figure 7 This is a schematic diagram of the overall structure of the drive wheel of the present invention;

[0034] Figure 8 This is a schematic diagram of the overall arc-shaped baffle of the present invention.

[0035] The components include: 1. Lamp body; 2. Central cylinder; 3. Drive hydraulic cylinder; 4. Arc-shaped baffle; 5. Hinged joint; 6. Hinged support; 7. Hinged ear seat; 8. Support plate; 9. Motor; 10. Drive wheel; 11. Driven wheel; 12. Cable winding and unwinding; 13. Cable management clip; 14. Tunnel wall; 15. Bracket. Detailed Implementation

[0036] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0037] Example:

[0038] like Figure 1 - Figure 8As shown, this embodiment proposes an adaptive dimming intelligent tunnel light, including a lamp body 1, a brightness adjustment component, and a height adjustment component. The lamp body 1 is an LED tunnel lighting fixture with a built-in high-brightness LED light source module and heat dissipation structure. The lamp body 1 is cylindrical in shape, with the light-emitting surface facing downwards. The brightness adjustment component includes a central cylinder 2, a driving hydraulic cylinder 3, and an arc-shaped baffle 4. The central cylinder 2 is a cylindrical structure with an inner diameter slightly larger than the outer diameter of the lamp body 1. The upper end of the central cylinder 2 is fixed to the mounting position of the lamp body 1, specifically by bolt connection or welding to the lamp holder. The lower end of the central cylinder 2 is an open end, facing the light-emitting surface of the lamp body 1. Five arc-shaped baffles 4 are provided, and the five arc-shaped baffles 4 are evenly arranged along the circumference of the lower end of the central cylinder 2. The overall shape of each arc-shaped baffle 4 is an arc-shaped piece, and its radius of curvature is adapted to the outer diameter of the central cylinder 2. The root (i.e., upper edge) of each arc-shaped baffle 4 is hinged to the lower outer circumference of the central cylinder 2 via a hinge shaft, allowing the arc-shaped baffle 4 to swing around the hinge shaft in a vertical plane. A driving hydraulic cylinder 3 is provided in a one-to-one correspondence with each arc-shaped baffle 4; that is, five sets of driving hydraulic cylinders 3 are provided in this embodiment. The two ends of each set of driving hydraulic cylinders 3 are respectively hinged to the upper part of the central cylinder 2 and the upper part of the corresponding arc-shaped baffle 4. Specifically, both ends of the driving hydraulic cylinder 3 are provided with hinge joints 5, the upper outer wall of the central cylinder 2 is provided with a hinge support 6, and the upper outer wall of the arc-shaped baffle 4 is provided with a hinge ear seat 7. The hinge joint 5 at the upper end of the driving hydraulic cylinder 3 is hinged to the hinge support 6 of the central cylinder 2, and the hinge joint 5 at the lower end of the driving hydraulic cylinder 3 is hinged to the hinge ear seat 7 of the arc-shaped baffle 4. Both the hinge support 6 and the hinge ear seat 7 are provided with pin holes, enabling rotational connection via hinge pins. The extension and retraction of the driving hydraulic cylinder 3 causes the arc-shaped baffle 4 to swing around its root hinge point. When the piston rod of the driving hydraulic cylinder 3 extends, it pushes the arc-shaped baffle 4 outward, increasing the exposed area of ​​the light-emitting surface of the lamp body 1 and increasing the light output. When the piston rod of the driving hydraulic cylinder 3 retracts, it pulls the arc-shaped baffle 4 inward, reducing the exposed area of ​​the light-emitting surface of the lamp body 1 and decreasing the light output. When all five arc-shaped baffles 4 are completely closed, the sides of each arc-shaped baffle 4 fit together, forming a sealed cavity covering the light-emitting surface of the lamp body 1. At this time, the light from the lamp body 1 is completely sealed, achieving a zero-light output state. This sealed cavity can effectively isolate the humid air, dust, and corrosive gases in the tunnel, protecting the optical components and heat dissipation structure of the lamp body 1. Each driving hydraulic cylinder 3 is equipped with an independent hydraulic control circuit, including a miniature hydraulic pump, an electromagnetic reversing valve, and hydraulic pipelines. Each driving hydraulic cylinder 3 is individually supplied with oil and oriented by its corresponding hydraulic control circuit, so the opening angle of each arc-shaped baffle 4 can be adjusted independently without affecting each other. In practical applications, multiple arc-shaped baffles 4 can be made to form differentiated opening states according to the lighting requirements of different directions in the tunnel.For example, on the inside of a tunnel curve, the opening angle of the arc-shaped baffle 4 facing the inside of the curve can be increased to increase the light output in that direction; on the straight section of the tunnel, the opening angle of each arc-shaped baffle 4 can be made the same to achieve uniform lighting; in the tunnel exit section near the natural light area, the arc-shaped baffle 4 facing the exit direction can be retracted to reduce the light output in that direction and avoid a strong contrast with natural light. The height adjustment assembly is used to install the lamp body 1 on the tunnel wall 14 and to control its height. The height adjustment assembly includes a support plate 8, a motor 9, a drive wheel 10, a driven wheel 11, and a cable retraction / extraction 12. The support plate 8 is a rectangular steel plate, fixed to the inner wall of the tunnel wall 14 (i.e., the side facing the tunnel passageway) by expansion bolts. The motor 9 is a geared motor, fixed to the support plate 8 by bolts, and the power output end of the motor 9 is connected to the drive wheel 10. The drive wheel 10 is installed on the inner wall of the tunnel wall 14, specifically through a bracket 15 for fixed connection to the tunnel wall 14. Driven wheel 11 is installed on the outer wall of tunnel wall 14 (i.e., the side facing away from the tunnel passage space) and fixedly installed by bracket 15. A through hole is provided on tunnel wall 14. One end of the take-up / deployment cable 12 is fixed and wrapped around the drive wheel 10, while the other end extends through the through hole to the outer side of tunnel wall 14 and wraps around driven wheel 11. A lamp holder is fixedly connected to the end of take-up / deployment cable 12 away from driven wheel 11. Lamp body 1 is fixedly installed on the lower surface of lamp holder. The upper end of the central cylinder 2 of the brightness adjustment component is fixed to the lower surface of lamp holder, thus forming an integrated modular structure between lamp body 1 and brightness adjustment component. Multiple cable clips 13 are fixedly installed on the outer wall of tunnel wall 14. The cable clips 13 have a U-shaped buckle structure. The take-up / deployment cable 12 is clipped into the inside of the cable clip 13, and the cable clips 13 keep it straight and taut, preventing the take-up / deployment cable 12 from swinging laterally or tangling during lifting. When maintenance or cleaning of the lamp body 1 is required, the motor 9 is started to rotate forward, driving the drive wheel 10 to rotate. The drive wheel 10 winds up and unwinds the cable 12, causing the lamp holder and lamp body 1 to descend as a whole. After maintenance is completed, the motor 9 is started to rotate in reverse, and the drive wheel 10 releases the cable 12. Under the guidance and tension of the driven wheel 11, the lamp body 1 rises smoothly to the working position. The driven wheel 11 creates a closed-loop constraint for the cable 12 on both sides of the tunnel wall 14, improving the stability and safety of the lifting system.

[0039] An installation method for an adaptive dimming intelligent tunnel light, the specific steps of which are as follows:

[0040] S1. Equipment pre-fixing: After assembling the lamp body 1, brightness adjustment component, and height adjustment component of the intelligent tunnel light, the lamp body 1 is suspended and installed by the support plate 8, drive wheel 10, driven wheel 11 and cable winding 12 on the tunnel wall 14. The cable winding 12 is straightened and tensioned by the cable management clip 13 to ensure the overall installation of the equipment is stable.

[0041] S2. Initial state calibration: Control multiple sets of drive hydraulic cylinders 3 to start and stop synchronously, drive five arc-shaped baffles 4 to swing around the hinge root of the lower end of the central cylinder 2, so that the multiple arc-shaped baffles 4 are completely closed and form a sealed cavity covering the lamp body 1. At this time, the light of the lamp body 1 is completely sealed, and the dimming initial zero calibration is completed.

[0042] S3. Independent dimming in zones: Based on the real-time lighting brightness requirements of the tunnel, the extension and retraction of each drive hydraulic cylinder 3 is controlled separately, which drives the corresponding arc-shaped baffle 4 to swing independently, and adjusts the opening angle of each arc-shaped baffle 4 as needed, so that multiple arc-shaped baffles 4 form differentiated opening states.

[0043] S4. Precise control of light output: By changing the opening amplitude of each arc baffle 4, the light output area of ​​the lamp body 1 in different directions is adjusted. Based on the correspondence between the degree of baffle opening and closing and the amount of light exposed, the overall light intensity of the tunnel light is adaptively adjusted.

[0044] S5. Steady-state maintenance and dynamic fine-tuning: After the lighting adjustment is completed, the extension and retraction stroke of each drive hydraulic cylinder 3 is locked to keep the arc baffle 4 open to stabilize the lighting brightness. At the same time, according to the changes in the tunnel ambient light, the angle of each arc baffle 4 is finely adjusted in real time to dynamically adapt to the tunnel lighting conditions.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent tunnel light with adaptive dimming, characterized in that, It includes a lamp body (1) and a brightness adjustment component, which includes a central cylinder (2), a driving hydraulic cylinder (3) and an arc-shaped baffle (4). The central cylinder (2) is fixed to the mounting position of the lamp body (1); Multiple arc-shaped baffles (4) are arranged along the lower circumference of the central cylinder (2), and the root of each arc-shaped baffle (4) is hinged to the lower end of the central cylinder (2). The driving hydraulic cylinder (3) corresponds one-to-one with the arc-shaped baffle (4). The two ends of the driving hydraulic cylinder (3) are respectively hinged to the upper part of the central cylinder (2) and the upper part of the corresponding arc-shaped baffle (4). The driving hydraulic cylinder (3) extends and retracts to drive the arc-shaped baffle (4) to swing around its root to adjust the light output area of ​​the lamp body (1).

2. The adaptive dimming intelligent tunnel light according to claim 1, characterized in that: The arc-shaped baffle (4) is provided in five pieces, and the five arc-shaped baffles (4) are evenly arranged along the lower circumferential direction of the central cylinder (2).

3. The adaptive dimming intelligent tunnel light according to claim 1, characterized in that: The driving hydraulic cylinder (3) is provided with hinge joints (5) at both ends, the upper part of the central cylinder (2) is provided with a hinge support (6), and the upper part of the arc-shaped baffle (4) is provided with a hinge ear seat (7); the driving hydraulic cylinder (3) is hinged to the hinge support (6) and the hinge ear seat (7) respectively through the hinge joints (5).

4. The adaptive dimming intelligent tunnel light according to claim 1, characterized in that: When the multiple arc-shaped baffles (4) are fully closed, they enclose and form a sealed cavity that covers the lamp body (1).

5. The adaptive dimming intelligent tunnel light according to claim 1, characterized in that: It also includes a height adjustment component, the lamp body (1) being mounted to the tunnel wall (14) via the height adjustment component; The height adjustment assembly includes a support plate (8), a motor (9), a drive wheel (10), a driven wheel (11), and a cable retraction / deployment (12); the support plate (8) is fixed to the inner wall of the tunnel wall (14), the motor (9) is fixed to the support plate (8), and the output end of the motor (9) is connected to the drive wheel (10) for transmission.

6. The adaptive dimming intelligent tunnel light according to claim 5, characterized in that: The drive wheel (10) is installed on the inner side wall of the tunnel wall (14), the driven wheel (11) is installed on the outer side wall of the tunnel wall (14), and the take-up and release cable (12) is wound around the drive wheel (10) and the driven wheel (11); a through hole is provided on the tunnel wall (14), and the take-up and release cable (12) extends through the through hole to the outer side of the tunnel wall (14).

7. The adaptive dimming intelligent tunnel light according to claim 1, characterized in that: The outer wall of the tunnel wall (14) is provided with a cable management clip (13), and the cable retraction (12) is clipped in the cable management clip (13) to maintain tension.

8. The intelligent tunnel light with adaptive dimming according to claim 1, characterized in that: The end of the cable (12) away from the driven wheel (11) is connected to a lamp holder, the lamp body (1) is fixed on the lamp holder, and the brightness adjustment component is fixed on the lower surface of the lamp holder.

9. The intelligent tunnel light with adaptive dimming according to claim 1, characterized in that: Each of the arc-shaped baffles (4) swings independently under the drive of the corresponding driving hydraulic cylinder (3), and the opening angles of the multiple arc-shaped baffles (4) are different from each other.

10. A method for installing an adaptive dimming intelligent tunnel light, characterized in that: The adaptive dimming smart tunnel light as described in any one of claims 1-9 S1. Equipment pre-fixing: After assembling the lamp body (1), brightness adjustment component and height adjustment component of the intelligent tunnel light, the lamp body (1) is suspended and installed by the support plate (8), drive wheel (10), driven wheel (11) and cable winding (12) on the tunnel wall (14). The cable winding (12) is straightened and tensioned by the cable management clip (13) to ensure the overall installation of the equipment is stable. S2. Initial state calibration: control multiple sets of driving hydraulic cylinders (3) to start and stop synchronously, drive five arc-shaped baffles (4) to swing around the lower hinge root of the central cylinder (2), so that the multiple arc-shaped baffles (4) are completely closed and enclosed to form a sealed cavity covering the lamp body (1). At this time, the lamp body (1) is completely sealed, and the dimming initial zero calibration is completed. S3. Independent dimming of zones: According to the real-time lighting brightness requirements of the tunnel, the extension and retraction of each driving hydraulic cylinder (3) is controlled separately, which drives the corresponding arc baffle (4) to swing independently, and adjusts the opening angle of each arc baffle (4) as needed, so that multiple arc baffles (4) form differentiated opening states. S4. Precise control of light output: By changing the opening amplitude of each arc baffle (4), the light output area of ​​the lamp body (1) in different directions is adjusted. Based on the correspondence between the degree of opening and closing of the baffle and the amount of light exposed, the overall light intensity of the tunnel lamp is adaptively adjusted. S5. Steady-state maintenance and dynamic fine-tuning: After the lighting adjustment is completed, the extension and retraction stroke of each driving hydraulic cylinder (3) is locked to keep the arc baffle (4) open to stabilize the lighting brightness. At the same time, the angle of each arc baffle (4) is finely adjusted in real time according to the changes in the tunnel ambient light to dynamically adapt to the tunnel lighting conditions.

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