A lighting device for improving the light environment of highway tunnels

Abstract

This invention relates to the field of lighting technology for highway tunnel lighting environment, specifically a lighting device for improving the lighting environment of highway tunnels; it includes: a light-shielding canopy installed on the rear side of the tunnel body, the light-shielding canopy being used to adjust the brightness of light entering the passage inside the canopy, and an adjustment mechanism installed on the light-shielding canopy; this invention can achieve rapid dynamic adjustment of the brightness of light inside the light-shielding canopy by quickly adjusting the gradient change of the overall light transmittance of the shielding film, thereby not only ensuring that the overall brightness inside the light-shielding canopy always transitions smoothly and stably with the lighting brightness inside the tunnel body, but also significantly improving the efficiency of dynamic adjustment of light brightness, while ensuring the stability and safety of the driver.

Description

Technical Field

[0001] This invention relates to the field of lighting technology for highway tunnel lighting environment, specifically to a lighting device for improving the lighting environment of highway tunnels. Background Technology

[0002] As an important part of the national road network, highway tunnels have strict requirements for tunnel lighting systems. For example, in order to effectively alleviate or eliminate the visual shock phenomenon of "black hole" and "white hole" caused by the difference in brightness between the inside and outside of the tunnel when drivers enter and exit the tunnel, corresponding lighting facilities are usually provided for the tunnel to ensure driving safety.

[0003] In existing technologies, tunnel entrances and exits are usually equipped with light-blocking canopies. The lower section of the canopy typically has air exchange vents on both sides to maintain ventilation, while the upper section uses light-blocking plates with gradient light transmittance to adjust the brightness of external light entering the canopy, so that it can smoothly transition with the lighting brightness inside the tunnel, thereby effectively reducing visual shock caused by sudden changes in light when drivers enter and exit the tunnel.

[0004] However, the above-mentioned method of adjusting the brightness of the light inside the canopy by using light-blocking canopies and light-blocking panels still has the following drawbacks: Since the light-blocking panels with fixed light transmittance cannot be dynamically adjusted according to weather changes, when the external light is too strong, the brightness of the passage inside the light-blocking canopy is still too high, so that it cannot smoothly transition with the lighting brightness inside the tunnel, and the "black hole" and "white hole" effects will still be produced; when the external light is weak, it is necessary to tediously dim the lighting brightness of the tunnel entrance and inside the tunnel section by section in order to ensure a smooth connection of brightness inside and outside the tunnel. Not only is the adjustment efficiency low, but the slow brightness adjustment may also interfere with the driver's normal driving. Summary of the Invention

[0005] The purpose of this invention is to provide a lighting device for improving the light environment of highway tunnels, so as to solve the problem that the fixed light transmittance of the light-blocking canopy in the prior art is difficult to adapt to changes in external light.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solution: a lighting device for improving the light environment of highway tunnels, including a light-shielding canopy set on the rear side of the tunnel body, the light-shielding canopy being used to adjust the brightness of the light entering the passage inside the canopy, and an adjustment mechanism being provided on the light-shielding canopy.

[0007] The light-shading canopy includes a frame, with multiple sets of light-transmitting panels evenly arranged circumferentially on the upper section of the frame. Each set of light-transmitting panels contains a shielding film, and the light transmittance of the shielding film increases uniformly in a gradient from the end furthest from the tunnel body to the end closest to the tunnel body.

[0008] The adjustment mechanism includes an adjustment component, which is used to adjust the overall light transmittance gradient of the masking film within each group of light-transmitting plates.

[0009] Preferably, the lower section of the frame is provided with an air exchange port for connecting the inner passage of the shed with the outside, and light shields are symmetrically arranged on both sides of the frame. The light shields can be adjusted in pitch angle and are used to block the light that shines directly into the inner passage of the shed from the air exchange port.

[0010] Preferably, the front end of the masking film is fixed to the adjustment component, and the rear end of the masking film is detachably installed on the adjustment component; the adjustment mechanism further includes a removal component, which is used to cooperate with the adjustment component to remove the masking film in each group of light-transmitting plates; the light-transmitting plate group is provided with an adjustment frame, which can drive the corresponding light-transmitting plate group to adjust its pitch.

[0011] Preferably, the frame includes main crossbeams, secondary crossbeams, main longitudinal beams, and secondary longitudinal beams; the main crossbeams are symmetrically distributed front and back, and multiple secondary crossbeams are evenly arranged between two main crossbeams. The main crossbeams and secondary crossbeams are arranged at equal intervals front and back. A set of main longitudinal beams and secondary longitudinal beams is arranged between each pair of adjacent crossbeams; each set of main longitudinal beams and secondary longitudinal beams includes two main longitudinal beams and two secondary longitudinal beams that are symmetrically arranged left and right. The two main longitudinal beams are centered and the two secondary longitudinal beams are located diagonally below the adjacent main longitudinal beams. Light-transmitting openings connecting the inside and outside of the symmetrical main longitudinal beams and between the main longitudinal beams and the adjacent secondary longitudinal beams are provided. The airflow exchange openings in the lower section of the frame are located on the lower side of each secondary longitudinal beam.

[0012] Preferably, the light-transmitting plate group completely covers the outside of the corresponding light-transmitting opening. The light-transmitting plate group includes upper and lower symmetrical light-transmitting plates, and a cavity is provided between the symmetrical light-transmitting plates that runs through the front and back. The cavity is used for the shielding film to pass through the front and back.

[0013] Preferably, the adjusting assembly includes a take-up roller and a guide roller; multiple sets of supports are fixedly installed on the upper sides of the two main crossbeams, and a take-up roller and a guide roller are rotatably installed on each set of supports. The take-up roller is located above the corresponding guide roller, and each take-up roller corresponds to each set of light-transmitting plates; the masking film is tensioned on the front and rear symmetrical take-up rollers and guide rollers, and each take-up roller has a pre-reserved portion of the masking film to be wound. The masking film can be wound by rotating the take-up roller.

[0014] Preferably, the end of the light-shielding plate near the frame is rotatably connected to two main crossbeams, and multiple hydraulic cylinders are evenly arranged on the lower side of the light-shielding plate. The telescopic ends of the hydraulic cylinders are hinged to the lower side of the light-shielding plate, and the lower ends of the hydraulic cylinders are hinged to the corresponding main crossbeams or secondary crossbeams.

[0015] Preferably, the front end of the masking film is fixedly mounted on the arc surface of the front take-up roller; the removal assembly includes a clamping groove and an adjusting groove; the clamping groove is opened on the rear take-up roller and runs vertically through it, the clamping groove is used for the rear end of the masking film to pass through the rear take-up roller from bottom to top, and the rear end of the masking film passing through the clamping groove is clamped with a spring clip; multiple adjusting grooves are evenly opened circumferentially on the upper section of the front main crossbeam, each adjusting groove is open on the upper side and corresponds to each guide roller one, electric push rods are symmetrically fixedly arranged in the adjusting grooves, and the telescopic ends of the symmetrical electric push rods are jointly fixedly arranged with a lifting frame, and a guide roller two is rotatably arranged in the lifting frame.

[0016] Preferably, the light-transmitting plate group is symmetrically fixed with adjustment frames on the left and right sides, and the front side of the adjustment frame is hinged to the adjacent main crossbeam or secondary crossbeam; each group of main longitudinal beams and secondary longitudinal beams has multiple sets of sinking grooves on the upper side, each group includes two sinking grooves symmetrically along the axis of the corresponding take-up roller, the upper side of the sinking groove is open and located on the lower side of the corresponding adjustment frame, a cylinder is installed inside the sinking groove, the rear end of the cylinder is hinged to the sinking groove, and the telescopic end of the cylinder is hinged to the lower side of the corresponding adjustment frame.

[0017] Preferably, multiple lighting lamps are evenly installed on the lower side of the main longitudinal beam, and the brightness of all the lighting lamps in the shading canopy increases uniformly from the end away from the tunnel body to the end closer to the tunnel body; multiple photovoltaic panels are installed on the upper side of the shading plate, and each photovoltaic panel can supply power to the lighting lamps in the shading canopy.

[0018] Compared with the prior art, the beneficial effects of this application are as follows: When the external light is too strong, the invention uses a light-blocking canopy and an adjustment mechanism to quickly adjust the entire shielding film in each group of light-transmitting plates away from the tunnel body. This utilizes the characteristic that the light transmittance of the shielding film increases uniformly from the end away from the tunnel body to the end closer to the tunnel body, thereby reducing the light transmittance of the light-blocking canopy near the tunnel body entrance, thus reducing the brightness of the light-blocking canopy near the tunnel body entrance, achieving a smooth transition with the lighting brightness at the tunnel body entrance, and thus achieving a smooth transition between the overall light brightness inside the light-blocking canopy and the lighting brightness inside the tunnel body. When the external light is weak, the entire shielding film is quickly moved towards the tunnel body, increasing the light transmittance of the light-blocking canopy near the tunnel body entrance, thereby increasing the brightness to achieve a smooth transition with the lighting brightness inside the tunnel body. The above method can achieve rapid dynamic adjustment of the light brightness inside the shading canopy by quickly adjusting the gradient change of the overall light transmittance of the shading film. This not only ensures that the overall brightness inside the shading canopy always transitions smoothly and stably with the lighting brightness inside the tunnel, but also significantly improves the efficiency of dynamically adjusting the light brightness, while ensuring the stability and safety of the driver. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a side view sectional diagram of the structure of the present invention.

[0021] Figure 3 This is a frontal cross-sectional view of the structure of the present invention.

[0022] Figure 4 This is a schematic diagram of the frame structure of the shade canopy.

[0023] Figure 5 This is a schematic diagram of the light-transmitting panel assembly structure.

[0024] Figure 6 This is a side view sectional diagram of the adjustment component structure.

[0025] Figure 7 This is a schematic diagram of the clamping groove structure.

[0026] Figure 8 This is a partial cross-sectional schematic diagram of the regulating channel structure.

[0027] Figure 9 This is a side view sectional diagram of the adjustment frame structure.

[0028] Explanation of reference numerals in the attached drawings: 1. Tunnel body; 2. Sunshade canopy; 21. Frame; 211. Main crossbeam; 212. Secondary crossbeam; 213. Main longitudinal beam; 214. Secondary longitudinal beam; 215. Lighting lamp; 22. Translucent plate; 221. Adjusting frame; 222. Sinking trough; 223. Cylinder; 23. Covering film; 3. Adjusting mechanism; 31. Adjusting component; 311. Winding roller; 312. Guide roller one; 32. Removal component; 321. Clamping slot; 322. Spring clamp; 323. Adjusting slot; 324. Electric actuator; 325. Lifting frame; 326. Guide roller two; 4. Sunshade plate; 41. Hydraulic cylinder; 42. Photovoltaic panel. Detailed Implementation

[0029] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0030] Example 1: Since the light-blocking panel with fixed light transmittance cannot be dynamically adjusted according to weather changes, when the external light is too strong, the brightness of the passage inside the light-blocking canopy is still too high, so that it cannot smoothly transition with the lighting brightness inside the tunnel, and the "black hole" and "white hole" effects will still occur. When the external light is weak, it is necessary to tediously dim the lighting brightness of the tunnel entrance and inside the tunnel section by section in order to ensure a smooth connection of brightness inside and outside the tunnel. Not only is the adjustment efficiency low, but the slow brightness adjustment may also interfere with the driver's normal driving.

[0031] like Figures 1 to 8A lighting device for improving the light environment of a highway tunnel includes a light-shielding canopy 2 installed on the rear side of the tunnel body 1. The light-shielding canopy 2 is used to adjust the brightness of the light entering the passage inside the canopy. An adjustment mechanism 3 is provided on the light-shielding canopy 2. The light-shielding canopy 2 includes a frame 21. Multiple sets of light-transmitting plates are evenly arranged circumferentially on the upper section of the frame 21. Each set includes multiple light-transmitting plates evenly distributed front and back. Each set of light-transmitting plates is provided with a shielding film 23 extending front and back. The light transmittance of the shielding film 23 increases uniformly from the end away from the tunnel body 1 to the end closer to the tunnel body 1. The adjustment mechanism 3 includes an adjustment component 31, which is used to adjust the overall light transmittance gradient of the shielding film 23 in each set of light-transmitting plates.

[0032] The working principle of the masking film 23 is as follows: When the external light is too strong, the masking film 23 in each group of light-transmitting plates is quickly adjusted away from the tunnel body 1 by adjusting the component 31. This utilizes the characteristic that the light transmittance of the masking film 23 increases uniformly from the end away from the tunnel body 1 to the end closer to the tunnel body 1, thereby reducing the light transmittance of the light-shading canopy 2 near the entrance of the tunnel body 1. This reduces the brightness of the light-shading canopy 2 near the entrance of the tunnel body 1, achieving a smooth transition with the lighting brightness at the entrance of the tunnel body 1, and thus achieving a smooth transition between the overall light brightness inside the light-shading canopy 2 and the lighting brightness inside the tunnel body 1. When the external light is weak, the masking film 23 is quickly moved towards the tunnel body 1, increasing the light transmittance of the light-shading canopy 2 near the entrance of the tunnel body 1, thereby increasing the brightness to achieve a smooth transition with the lighting brightness inside the tunnel body 1.

[0033] It should be emphasized that the core improvement of this embodiment is that by rapidly adjusting the gradient change of the overall light transmittance of the shielding film 23, the brightness of the light inside the shading canopy 2 can be rapidly and dynamically adjusted. This not only ensures that the overall brightness inside the shading canopy 2 always transitions smoothly and stably with the lighting brightness inside the tunnel body 1, but also significantly improves the efficiency of dynamically adjusting the brightness of the light, while ensuring the stability and safety of the driver.

[0034] It should be noted that: the end of the shielding film 23 in each group of light-transmitting panels that is far from the tunnel body 1 needs to reserve a section of fully transparent area that extends forward and backward, so as to ensure that the brightness at the entrance of the shading canopy 2 can always be smoothly connected with the external light when adjusting the light transmittance gradient of the shielding film 23.

[0035] It should be noted that a light-shielding canopy 2 can also be installed at the exit of the tunnel body 1, and the light transmittance gradient of the corresponding shielding film 23 can be adjusted by the adjustment component 31 on the light-shielding canopy 2 to ensure that the lighting brightness at the exit of the tunnel body 1 is smoothly connected with the internal light brightness of the corresponding light-shielding canopy 2 near the exit of the tunnel body 1, thereby ensuring a smooth transition of brightness between the tunnel body 1 and the light-shielding canopy 2 at the exit.

[0036] It should be noted that sensors for detecting the brightness of the outside, inside and outside of the tunnel body 1 can be installed on the shading canopy 2 to precisely adjust the shading film 23, thereby achieving a stable and smooth transition of brightness.

[0037] It should be noted that, such as Figures 1 to 4 The frame 21 includes a main crossbeam 211, secondary crossbeams 212, a main longitudinal beam 213, and secondary longitudinal beams 214. The main crossbeams 211 are symmetrically distributed front and rear. The front main crossbeam 211 is fixedly connected to the rear side of the tunnel body 1. Multiple secondary crossbeams 212 are evenly arranged between two main crossbeams 211. The lower sides of the main crossbeams 211 and secondary crossbeams 212 are fixedly connected to the ground. The main crossbeams 211 and secondary crossbeams 212 are arranged at equal intervals front and rear. A set of main longitudinal beams 213 and secondary longitudinal beams 214 are provided between each pair of adjacent crossbeams; each set of main longitudinal beams 213 and secondary longitudinal beams 214 includes two main longitudinal beams 213 and two secondary longitudinal beams 214 that are symmetrically arranged on the left and right. The two main longitudinal beams 213 are in the center and the two secondary longitudinal beams 214 are located diagonally below the adjacent main longitudinal beams 213. Light-transmitting openings connecting the inside and outside of the shed are provided between the symmetrical main longitudinal beams 213 and between the main longitudinal beams 213 and the adjacent secondary longitudinal beams 214.

[0038] Through the interconnection of the main crossbeams 211, secondary crossbeams 212, main longitudinal beams 213 and secondary longitudinal beams 214, and the stable fixation of the main crossbeams 211 to the ground, not only can the overall strength of the shading canopy 2 be guaranteed, but also external light can be stably transmitted into the channel inside the shading canopy 2 through the light-transmitting openings.

[0039] It should be noted that, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 The light-transmitting plate group completely covers the outside of the corresponding light-transmitting opening. The light-transmitting plate group includes symmetrical light-transmitting plates 22. The light-transmitting plates 22 are made of high light-transmitting material so that external light can enter the inner channel of the shed without damage. The adjacent light-transmitting plates 22 are connected to each other. A cavity is provided between the symmetrical light-transmitting plates 22. The cavity is used for the shielding film 23 to pass through from front to back. The symmetrical light-transmitting plates 22 can protect the shielding film 23 in the cavity to isolate it from external environmental disturbances.

[0040] like Figure 1 , Figure 2 and Figure 6 The adjustment assembly 31 includes a take-up roller 311 and a guide roller 312; multiple sets of supports are fixedly installed on the upper side of the two main crossbeams 211, and a take-up roller 311 and a guide roller 312 are rotatably installed on each set of supports. The take-up roller 311 is located above the corresponding guide roller 312, and each take-up roller 311 corresponds to each set of light-transmitting plates. The take-up roller 311 is driven by a motor fixed on the corresponding support. The masking film 23 is tensioned on the front and rear symmetrical take-up rollers 311 and guide rollers 312. Each take-up roller 311 has a pre-reserved portion of the masking film 23. The masking film 23 can be wound by rotating the take-up roller 311. The light transmittance of the masking film 23 wound on the front take-up roller 311 increases uniformly from the outside to the inside, while the light transmittance of the masking film 23 wound on the rear take-up roller 311 increases uniformly from the inside to the outside.

[0041] When adjusting the light transmittance gradient of the masking film 23 in each group of light-transmitting plates, the two symmetrical take-up rollers 311 are synchronously driven by the motor to rotate and unwind the masking film 23, which can make the masking film 23 in the cavity move forward or backward as a whole. By utilizing the characteristic of the light transmittance gradient change of the masking film 23, the overall light transmittance of the masking film 23 in the cavity can be increased or decreased according to actual needs, thereby realizing the rapid adjustment of the light transmittance gradient of the masking film 23 and the light brightness in the light-blocking shed 2. Among them, the two symmetrical guide rollers 312 can ensure that the masking film 23 moving back and forth in the cavity does not rub against the light-transmitting plate 22, ensuring the accuracy of the adjustment of the masking film 23.

[0042] Example 2: It is understood that in Example 1, as the angle of sunlight changes, the angle of sunlight will also change and enter the shade shed 2 obliquely from the left and right sides. Even if the shade shed 2 can dynamically adapt to the external brightness, the sunlight that shines directly into the shed will still create reflected glare on the road or inside the vehicle, thereby interfering with the driver's normal driving.

[0043] like Figures 1 to 3 To address the aforementioned issues, air exchange ports for connecting the inner passageway to the outside are provided on the left and right sides of the lower section of the frame 21. These air exchange ports are located under each secondary longitudinal beam 214. A light-shielding plate 4 is symmetrically arranged on the left and right sides of the frame 21. The light-shielding plate 4 is adjustable in pitch and is used to block light directly entering the inner passageway from the air exchange ports. The end of the light-shielding plate 4 closest to the frame 21 is rotatably connected to two main crossbeams 211. The light-shielding plate 4 extends horizontally to the left and right. Multiple hydraulic cylinders 41 are evenly arranged on the lower side of the light-shielding plate 4. The hydraulic cylinders 41 extend obliquely and their extension ends are hinged to the lower side of the light-shielding plate 4. The lower end of the hydraulic cylinder 41 is hinged to the corresponding main crossbeam 211 or secondary crossbeam 212.

[0044] The working principle of the sunshade 4: When sunlight can directly enter the passage inside the sunshade 2 through the air exchange ports on both sides, the hydraulic cylinder 41 extends and retracts to drive the sunshade 4 to rotate downwards, so as to cover and block the corresponding air exchange ports, thereby preventing the sunlight from entering, so as to always ensure the safety and stability of the driver when driving the vehicle in the passage inside the sunshade 2.

[0045] It should be emphasized that the core improvement of this embodiment is: by adjusting the light-blocking plate 4 to control the light entering the sunshade 2 on both sides, the sunlight is prevented from directly entering the sunshade 2 at a specific angle of illumination, so as to ensure the driving safety of the driver; at the same time, when the sunlight is at other angles of illumination, the air exchange port can be stably opened to ensure the stable flow of air in the sunshade 2, reduce ventilation energy consumption, and ensure the air quality in the sunshade 2.

[0046] It should be noted that, such as Figures 1 to 3 Multiple lighting lamps 215 are evenly installed on the lower side of the main longitudinal beam 213. The brightness of the light from all the lighting lamps 215 in the shade shed 2 increases uniformly from the end away from the tunnel body 1 to the end closer to the tunnel body 1. The brightness of each lighting lamp 215 adjacent to the tunnel body 1 is consistent with the lighting brightness of the internal passage of the tunnel body 1. Multiple photovoltaic panels 42 are evenly installed on the upper side of the shade plate 4. Each photovoltaic panel 42 can supply power to the lighting lamps 215 in the shade shed 2.

[0047] When the pitch angle of the light-shielding plate 4 is adjusted by the hydraulic cylinder 41, the light-shielding plate 4 can drive the upper photovoltaic panel 42 to rotate synchronously. Thus, by adjusting the pitch angle of the light-shielding plate 4, the external sunlight can always shine directly on the photovoltaic panel 42, thereby improving the energy conversion efficiency of the photovoltaic panel 42 and ensuring efficient charging of each lighting lamp 215.

[0048] When the external light intensity is lower than the lighting intensity inside the tunnel body 1, the lights 215 inside the light-shading canopy 2 can be turned on. Thus, through the light-shading canopy 215 with its intensity gradient, the brightness inside the light-shading canopy 2 can still maintain a smooth transition with the brightness of the external environment and the tunnel body 1.

[0049] Example 3: It is understood that in Example 2, although there are stable air exchange ports on both sides of the shading canopy 2, when a fire occurs in the tunnel body 1 or the shading canopy 2, the generated high-temperature airflow will continue to flow upward. At this time, the shading plate 4 and the shading film 23 covering the upper side of the frame 21 will prevent the airflow from being effectively discharged, which may lead to the spread of the fire and the continuous accumulation of smoke.

[0050] like Figure 1 and Figure 2 The front end of the masking film 23 is fixedly mounted on the arc surface of the corresponding front take-up roller 311, and the rear end of the masking film 23 is detachably mounted on the corresponding rear take-up roller 311. The adjustment mechanism 3 also includes a removal component 32, which is used to cooperate with the adjustment component 31 to remove the masking film 23 in each group of light-transmitting plates. An adjustment frame 221 is provided on the light-transmitting plate group, which can drive the corresponding light-transmitting plate group to adjust its pitch.

[0051] Working principle of light-transmitting openings: When there is high-temperature airflow that needs to be discharged inside the light-blocking shed 2, the rear end of the light-blocking film is first quickly removed from the corresponding rear take-up roller 311 by the removal component 32. Then, the front take-up roller 311 is used to stably and continuously wind the masking film 23 by the removal component 32, thereby quickly pulling the masking film 23 in the cavity forward and winding it onto the front take-up roller 311. After the masking film 23 in the cavity is completely removed, the rear end of the corresponding light-transmitting plate group can be rotated upward by the adjusting frame 221, thereby removing the cover of each light-transmitting opening and allowing the high-temperature airflow to be stably discharged outward from each light-transmitting opening.

[0052] It should be emphasized that the core improvement of this embodiment is that by quickly removing the shielding film 23 and adjusting the pitch angle of the light-transmitting plate group, the light-transmitting opening that was originally completely covered is quickly opened, so that the high-temperature smoke can be smoothly discharged upward, thereby achieving effective fire control and rapid smoke evacuation.

[0053] It should be noted that, such as Figure 1 , Figure 4 , Figure 6 , Figure 7 and Figure 8 The extraction assembly 32 includes a clamping groove 321 and an adjusting groove 323. The clamping groove 321 is formed on the rear take-up roller 311 and extends vertically. The clamping groove 321 is used for the rear end of the masking film 23 to pass through the rear take-up roller 311 from bottom to top. The rear end of the masking film 23 that passes through the clamping groove 321 is clamped with a spring clip 322. The spring clip 322 is larger than the clamping groove 321. The rear end of the masking film 23 can be temporarily connected to the rear take-up roller 311 through the spring clip 322. The upper section of the front main crossbeam 211... Multiple adjustment slots 323 are evenly provided. The upper side of each adjustment slot 323 is open and corresponds to each guide roller 312. Electric push rods 324 are symmetrically fixed in the adjustment slots 323 along the length direction. The telescopic ends of the symmetrical electric push rods 324 are jointly fixed with a lifting frame 325. The lifting frame 325 is U-shaped with the opening facing upward and moves toward the corresponding guide roller 312. A second guide roller 326 is rotatably arranged in the lifting frame 325. The second guide roller 326 is located below the masking film 23 and is distributed parallel to the corresponding guide roller 312.

[0054] When the masking film 23 needs to be removed, the electric actuator 324 first moves the lifting frame 325 and guide roller 326 upward until the guide roller 326 is in close contact with the lower surface of the masking film 23. Then, the front take-up roller 311 rotates to wind the masking film 23, and the rear take-up roller 311 rotates synchronously to unwind the masking film 23 until all the masking film 23 reserved on the rear take-up roller 311 is unwound. At this time, the rear end of the masking film 23 that has passed through the clamping groove 321 drives the spring clip 322 to be in close contact with the surface of the corresponding take-up roller 311. Then... As the front take-up roller 311 continues to rotate and wind, the spring clip 322 clamped at the rear end of the masking film 23 increases, and the spring clip 322 clamped at the rear end of the masking film 23 automatically falls off under the pressure of the surface of the rear take-up roller 311. The rear end of the masking film 23 then disengages from the clamping groove 321. At this time, the guide roller 326, which works in conjunction with the corresponding guide roller 312 to tightly limit the masking film 23, can ensure that the masking film 23 wound by the front take-up roller 311 is always in a taut state, so that the masking film 23 is stably and completely pulled out from the clamping cavity under the winding of the front take-up roller 311.

[0055] It should be noted that, such as Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 9 The light-transmitting plate group is symmetrically fixed with adjustment frames 221 on the left and right sides. The front side of the adjustment frame 221 is hinged to the adjacent main crossbeam 211 or secondary crossbeam 212. Each group of main longitudinal beams 213 and secondary longitudinal beams 214 has multiple sets of sinking grooves 222 on their upper sides. Each group includes two sinking grooves 222 symmetrically arranged along the axis of the corresponding winding roller 311. The upper side of the sinking groove 222 is open and located below the corresponding adjustment frame 221. A cylinder 223 is installed inside the sinking groove 222. The rear end of the cylinder 223 is hinged to the sinking groove 222, and the telescopic end of the cylinder 223 is hinged to the lower side of the corresponding adjustment frame 221.

[0056] When the light-transmitting opening is to be opened, the extension end of the cylinder 223 drives the rear end of the corresponding adjustment frame 221 to rotate upward around its front hinge point. The adjustment frame 221 then drives the corresponding light-transmitting plate group to rotate synchronously until the light-transmitting opening covered by the light-transmitting plate group is fully opened. The high-temperature flue gas discharged from the light-transmitting opening will flow backward under the guidance of the corresponding light-transmitting plate group, thereby preventing the discharged high-temperature flue gas from directly hitting the shielding membrane 23 that has been rolled up and extracted and igniting it, so as to ensure the safety of smoke exhaust.

[0057] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed application.

Claims

1. A lighting device for improving the light environment of highway tunnels, characterized in that: It includes a light-shading canopy installed on the rear side of the tunnel body, which is used to adjust the brightness of the light entering the passage inside the canopy, and the light-shading canopy is equipped with an adjustment mechanism; The light-shading canopy includes a frame, with multiple sets of light-transmitting panels evenly arranged circumferentially on the upper section of the frame. Each set of light-transmitting panels contains a shielding film, and the light transmittance of the shielding film increases uniformly from the end furthest from the tunnel body to the end closest to the tunnel body. The adjustment mechanism includes an adjustment component, which is used to adjust the overall light transmittance gradient of the masking film within each group of light-transmitting plates. The adjustment component includes a take-up roller and a guide roller. Multiple sets of supports are provided on the frame, and each set of supports is provided with a take-up roller and a guide roller. The take-up roller is located above the corresponding guide roller, and each take-up roller corresponds to each group of light-transmitting plates.

2. The lighting device for improving the light environment of highway tunnels as described in claim 1, characterized in that: The lower section of the frame is provided with an air exchange port for connecting the inner passage of the shed with the outside. The frame is symmetrically provided with light shields on both sides. The light shields can be adjusted in pitch angle and are used to block the light that shines directly into the inner passage of the shed from the air exchange port.

3. A lighting device for improving the light environment of highway tunnels as described in claim 2, characterized in that: The front end of the masking film is fixed to the adjustment component, and the rear end of the masking film is detachably installed on the adjustment component. The adjustment mechanism also includes a removal component, which is used to cooperate with the adjustment component to disassemble and remove the masking film in each group of light-transmitting plates. The light-transmitting panel assembly is equipped with an adjustment frame, which can drive the corresponding light-transmitting panel assembly to adjust its pitch.

4. A lighting device for improving the light environment of highway tunnels as described in claim 3, characterized in that: The frame includes main crossbeams, secondary crossbeams, main longitudinal beams, and secondary longitudinal beams; the main crossbeams are symmetrically distributed front and back, and multiple secondary crossbeams are evenly arranged between two main crossbeams. The main crossbeams and secondary crossbeams are arranged at equal intervals front and back, and a set of main longitudinal beams and secondary longitudinal beams are arranged between each pair of adjacent crossbeams. Each set of main longitudinal beams and secondary longitudinal beams includes two main longitudinal beams and two secondary longitudinal beams that are symmetrical from left to right. The two main longitudinal beams are in the center and the two secondary longitudinal beams are located diagonally below the adjacent main longitudinal beams. There are light-transmitting openings connecting the inside and outside of the symmetrical main longitudinal beams and between the main longitudinal beams and the adjacent secondary longitudinal beams. The airflow exchange openings of the lower section of the frame are located on the lower side of each secondary longitudinal beam.

5. A lighting device for improving the light environment of highway tunnels as described in claim 4, characterized in that: The light-transmitting plate assembly completely covers the outside of the corresponding light-transmitting opening. The light-transmitting plate assembly includes upper and lower symmetrical light-transmitting plates, and a cavity is provided between the symmetrical light-transmitting plates that runs through the front and back. The cavity is used for the shielding film to pass through the front and back.

6. A lighting device for improving the light environment of highway tunnels as described in claim 4, characterized in that: Multiple sets of supports are fixedly installed on the upper side of both main crossbeams, and the winding roller and guide roller are rotatably connected to each corresponding set of supports. The masking film is tensioned on the front and rear symmetrical take-up rollers and guide rollers. Each take-up roller has a pre-set amount of masking film to be wound. The masking film can be wound by rotating the take-up rollers.

7. A lighting device for improving the light environment of highway tunnels as described in claim 4, characterized in that: The end of the light-shielding plate near the frame is rotatably connected to two main crossbeams. Multiple hydraulic cylinders are evenly arranged on the lower side of the light-shielding plate. The extension and retraction ends of the hydraulic cylinders are hinged to the lower side of the light-shielding plate, and the lower ends of the hydraulic cylinders are hinged to the corresponding main crossbeams or secondary crossbeams.

8. A lighting device for improving the light environment of highway tunnels as described in claim 6, characterized in that: The front end of the masking film is fixedly mounted on the arc surface corresponding to the front take-up roller; The extraction assembly includes a clamping groove and an adjusting groove. The clamping groove is located on the rear take-up roller and extends vertically. The clamping groove is used for the rear end of the masking film to pass through the rear take-up roller from bottom to top. The rear end of the masking film passing through the clamping groove is clamped with a spring clip. Multiple adjusting grooves are evenly distributed circumferentially on the upper section of the main crossbeam on the front side. The upper side of each adjusting groove is open and corresponds to each guide roller. Electric push rods are symmetrically fixed in the adjusting grooves. The telescopic ends of the symmetrical electric push rods are jointly fixed to a lifting frame. A guide roller is rotatably installed in the lifting frame.

9. A lighting device for improving the light environment of highway tunnels as described in claim 5, characterized in that: The light-transmitting plate assembly is symmetrically fixed with adjustment frames on the left and right sides, and the front side of the adjustment frame is hinged to the adjacent main crossbeam or secondary crossbeam. Multiple sets of sinking grooves are opened on the upper side of the main longitudinal beam and the secondary longitudinal beam in each group. Each group includes two sinking grooves symmetrical along the axis of the corresponding winding roller. The upper side of the sinking groove is open and located on the lower side of the corresponding adjustment frame. A cylinder is installed inside the sinking groove. The rear end of the cylinder is hinged to the sinking groove, and the telescopic end of the cylinder is hinged to the lower side of the corresponding adjustment frame.

10. A lighting device for improving the light environment of highway tunnels as described in claim 4, characterized in that: Multiple lighting lamps are evenly installed on the lower side of the main longitudinal beam, and the brightness of the lighting lamps in all the light-shading canopies increases uniformly from the end away from the tunnel body to the end closer to the tunnel body. Multiple photovoltaic panels are installed on the upper side of the shading plate, and each photovoltaic panel can supply power to the lighting inside the shading shed.

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