Laminated grating structure for sunlight brightness attenuation outside tunnel hole

Abstract

The invention discloses a laminated grating structure for sunlight brightness attenuation outside a tunnel hole. The laminated grating structure comprises an upper-layer light-transmitting plate and a lower-layer light-transmitting plate which are arranged up and down and are respectively fixed on a framework, matt films which are arranged at intervals are respectively arrayed on the top surface of the upper-layer light-transmitting plate along the length direction and the width direction of the framework; a plurality of upper extinction strips are arrayed at corresponding positions below each extinction film on the bottom surface of the upper-layer light-transmitting plate along the length direction of the framework, and an upper reflecting film is arranged between every two adjacent upper extinction strips; an upper-layer light-transmitting area is formed on the upper-layer light-transmitting plate between the adjacent matt films; lower reflecting films which are arranged at intervals are respectively arrayed on the top surface of the lower-layer light-transmitting plate along the length direction and the width direction of the framework; the lower reflecting films are positioned at corresponding positions below the upper-layer light-transmitting area and are arc curved surfaces which protrude upwards; and lower matt strips which are arranged at intervals are arrayed at corresponding positions below each matt film on the top surface of the lower-layer light-transmitting plate along the length direction of the framework. The framework is applied to tunnel entrances and exits, so that eyes of a driver have brightness transition, and accidents are reduced.

Description

Technical Field

[0001] The invention relates to the field of tunnel engineering, and in particular to a laminated grating structure with attenuated sunlight brightness outside a tunnel. Background Art

[0002] When a vehicle enters the darker environment inside the tunnel from the brighter daylight environment outside the tunnel, the sudden change in brightness inside and outside the tunnel makes it difficult for the human eye to adapt instantly. The driver's eyes need about 8-10 seconds to adjust the brightness difference inside and outside the tunnel. Before the pupil completes the physiological adjustment from small to large, the driver sees a black blurry scene. Similarly, when the driver drives out of the darker environment inside the tunnel to the brighter environment outside the tunnel, the pupil shrinks rapidly, and the driver sees a white light. In order to reduce the impact of brightness difference on the eyes and reduce safety hazards in tunnel design, enhanced lighting fixtures are usually set at the entrance and exit sections to transition the brightness inside and outside the tunnel, so that the driver can adapt to the light environment from bright to dark or from dark to bright.

[0003] Setting up a light-reduction structure outside the tunnel can reduce the brightness difference between the inside and outside of the tunnel entrance and exit to a certain extent. At present, the common light-reduction structures outside the tunnel include facilities such as shading sheds. Shading sheds are a one-time attenuation of sunlight brightness, and the attenuation effect is not significant. At a certain lighting angle, a dazzling light spot will be formed. Therefore, a laminated grating structure that can perform multiple sunlight brightness attenuation is needed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the object of the present invention is to provide a laminated grating structure that can perform multiple sunlight brightness attenuation.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A laminated grating structure for attenuating sunlight brightness outside a tunnel, comprising an upper light-transmitting plate and a lower light-transmitting plate arranged at intervals from top to bottom and respectively arranged on a frame, wherein the frame is connected to the tunnel;

[0007] A plurality of rectangular matt films are arranged at intervals on the top surface of the upper light-transmitting plate along the length direction and the width direction of the frame;

[0008] A plurality of upper matte strips are arranged in an array along the length direction of the frame at corresponding positions below each matte film on the bottom surface of the upper light-transmitting plate, and an upper reflective film is arranged between adjacent upper matte strips. The upper reflective film and the upper matte strips on the bottom surface of the upper light-transmitting plate are alternately arranged in sequence along the length direction of the frame;

[0009] The upper light-transmitting plate between the adjacent matt films forms an upper light-transmitting area;

[0010] A plurality of lower reflective films are arranged in an array along the length direction and the width direction of the frame on the top surface of the lower light-transmitting plate. The lower reflective films are located at corresponding positions below the upper light-transmitting area and are curved surfaces convex upward.

[0011] On the top surface of the lower light-transmitting plate, a plurality of lower light-extending strips are arranged in an array along the length direction of the frame at corresponding positions below each of the light-extending films, and the lower light-transmitting plate between adjacent lower light-extending strips forms a lower light-transmitting area.

[0012] Further, the upper light-transmitting plate includes A plates and B plates arranged alternately along the length direction and width direction of the frame, respectively, and the lower light-transmitting plate includes C plates and D plates arranged alternately along the length direction and width direction of the frame, respectively, the A plates and C plates that can transmit light correspond to each other in upper and lower positions, and the B plates and D plates that can transmit light correspond to each other in upper and lower positions;

[0013] The top surface of the A plate is divided into 3×3 grids, and the matte films are respectively arranged at the four corners and five grids in the center area of ​​the top surface of the A plate, and the remaining grids of the A plate are the upper light-transmitting areas; the A plate bottom light reflection films and A plate bottom matte strips are arranged alternately at corresponding positions below each of the matte films on the bottom surface of the A plate;

[0014] The top surface of the B plate is divided into 3×3 grids, the four corners of the top surface of the B plate and the five grids in the center area are the upper light-transmitting areas, and the B plates of the remaining grids are respectively provided with the matte films; the bottom surface of the B plate is provided with B plate bottom light reflection films and B plate bottom matte strips arranged alternately at corresponding positions below each of the matte films;

[0015] The top surface of the C plate is divided into 3×3 grids, and the four corners of the top surface of the C plate and the five grids in the center area are respectively provided with a plurality of C plate top extinction strips arranged at intervals, and the remaining grids are provided with C plate top light reflectors;

[0016] The top surface of the D plate is evenly divided into 3X3 grids, the top surface of the D plate is provided with D plate top light reflection films at the four corners and five grids in the center area, and the remaining grids are provided with a plurality of D plate top extinction strips arranged at intervals;

[0017] The upper matte strip includes the bottom matte strip of the A plate and the bottom matte strip of the B plate, the lower matte strip includes the top matte strip of the C plate and the top matte strip of the D plate, the lower reflective film includes the top light reflector of the C plate and the top light reflective film of the D plate, and the upper reflective film includes the bottom light reflective film of the A plate and the bottom light reflective film of the B plate.

[0018] Furthermore, the lower reflection film is a partial spherical surface.

[0019] Furthermore, the frame includes an upper frame, a lower frame, and an up-and-down moving component, the upper frame and the lower frame are vertically slidably connected, and the upper light-transmitting plate and the lower light-transmitting plate are respectively integrated on the upper frame and the lower frame;

[0020] The lower frame is fixedly connected to the tunnel, and the up-and-down moving component drives the upper frame to be adjustable in height relative to the lower frame.

[0021] Furthermore, it also includes a controller and a sun photometer, wherein the sun photometer is used to measure the brightness data below the frame, and the controller controls the up and down moving parts to drive the upper frame to move according to the brightness data.

[0022] Furthermore, the frame includes an upper frame, a lower frame, and a horizontal moving component, and the upper light-transmitting plate and the lower light-transmitting plate are respectively integrated on the upper frame and the lower frame;

[0023] The lower frame is fixedly connected to the tunnel, and the horizontal moving component is connected to the lower frame and drives the upper frame to move relative to the lower frame along the width direction of the frame.

[0024] Furthermore, it also includes a controller and a sun photometer, wherein the sun photometer is used to measure the brightness data below the frame, and the controller controls the horizontal moving component to drive the upper frame to move according to the brightness data.

[0025] In the above technical solution, the present invention has the following beneficial effects:

[0026] When sunlight hits the upper light-transmitting plate, it is mainly divided into two parts of light. One part of the light passes through the upper light-transmitting area and enters the lower light-transmitting plate, and the other part of the light is absorbed by the extinction film to achieve a primary attenuation of light. Most of the light that hits the lower light-transmitting plate will hit the lower reflective film. After hitting the lower reflective film, the light is divided into three parts of light. One part of the light goes out of the upper light-transmitting area through the reflection of the lower reflective film, and one part of the light is reflected by the lower reflective film to the upper extinction strip and absorbed to achieve a secondary attenuation of light, and one part of the light is reflected by the lower reflective film to the upper reflective film. After the light reflected to the upper reflective film is reflected by the upper reflective film, one part of the light passes through the lower light-transmitting area and enters the tunnel entrance, and the other part of the light is absorbed by the lower extinction strip to achieve a tertiary attenuation of light. The present invention achieves multiple attenuation of sunlight, is particularly suitable for daytime with sufficient light, and uses a method of reducing energy consumption to achieve energy conservation, emission reduction, and low-carbon environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a structural schematic diagram of the stacked grating structure disclosed in the present invention;

[0029] Figure 2 It is a structural schematic diagram of the top surface of the A plate disclosed in the present invention;

[0030] Figure 3 It is a structural schematic diagram of the bottom surface of the A plate disclosed in the present invention;

[0031] Figure 4 It is a schematic diagram of the cross-sectional structure of the A plate disclosed in the present invention;

[0032] Figure 5 It is a structural schematic diagram of the top surface of the B plate disclosed in the present invention;

[0033] Figure 6 It is a structural schematic diagram of the bottom surface of the B plate disclosed in the present invention;

[0034] Figure 7 It is a schematic diagram of the cross-sectional structure of the B plate disclosed in the present invention;

[0035] Figure 8 It is a structural schematic diagram of the top surface of the C plate disclosed in the present invention;

[0036] Fig. 9 It is a schematic diagram of the cross-sectional structure of the C plate disclosed in the present invention;

[0037] Fig.10 It is a structural schematic diagram of the top surface of the D plate disclosed in the present invention;

[0038] Fig.11 It is a schematic diagram of the cross-sectional structure of the D plate disclosed in the present invention;

[0039] Fig.12 It is a schematic diagram of the top surface structure of the upper light-transmitting plate disclosed in the present invention;

[0040] Fig.13 It is a structural schematic diagram of the top surface of the light-transmitting plate disclosed in the present invention;

[0041] Fig.14 Schematic diagram of the optical path of the stacked grating structure disclosed in the present invention. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0043] It should be noted that the terms "above", "one end", "upper", etc. used in this article to indicate the orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Similar expressions are only for the purpose of explanation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; in addition, the terms "one part", "two parts", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] refer to Figures 1 to 14 The present invention provides a laminated grating structure for attenuating sunlight brightness outside a tunnel, comprising an upper light-transmitting plate and a lower light-transmitting plate arranged at intervals from top to bottom and respectively arranged on a frame 5, and the frame 5 is connected to the tunnel. The upper light-transmitting plate and the lower light-transmitting plate are respectively made of light-transmitting materials, which can transmit light. The upper light-transmitting plate has a matte film attached to the top surface, an upper reflective film and an upper matte strip attached to the bottom surface, and a lower matte strip attached to the top surface of the lower light-transmitting plate. The matte film is rectangular, preferably square, so that the matte effect is uniform.

[0045] A plurality of matt films are arranged at intervals on the top surface of the upper light-transmitting plate along the length direction and the width direction of the frame 5. The number of matt films is adjusted as needed according to the tunnel length and brightness requirements.

[0046] On the bottom surface of the upper light-transmitting plate, at the corresponding position below each matt film, a plurality of upper matt strips are arranged in an array along the length direction of the frame 5, and an upper reflective film is provided between adjacent upper matt strips. The upper reflective films and upper matt strips on the bottom surface of the upper light-transmitting plate are arranged alternately in sequence along the length direction of the frame 5, that is, arranged in the order of upper reflective film, upper matt strip, upper reflective film, etc. There are a plurality of upper reflective films and upper matt strips below each matt film. The length direction of the upper reflective films and upper matt strips is along the width direction of the frame. Preferably, there are four upper reflective films and three upper matt strips corresponding to each matt film.

[0047] The upper light-transmitting plate between adjacent matt films forms an upper light-transmitting area.

[0048] On the top surface of the lower light-transmitting plate, there are arrayed multiple lower reflective films arranged at intervals along the length direction and width direction of the frame 5. The lower reflective films are located at the corresponding position below the upper light-transmitting area. The outer surface of the lower reflective film is an arc surface that convexes upward as a whole. The edge size and edge shape of the lower reflective film correspond to the edge of the matte film. The lower reflective film diffuses the light beam, and the light received by the lower reflective film can be emitted from the upper light-transmitting area as much as possible, and the remaining light falls on the bottom surface of the upper light-transmitting plate.

[0049] Preferably, the lower reflective film is a partial spherical surface.

[0050] On the top surface of the lower light-transmitting plate, at the corresponding position below each matte film, a plurality of lower matte strips are arranged in an array along the length direction of the frame 5 at intervals, that is, a plurality of lower matte strips are arranged between adjacent lower reflective films, and the lower light-transmitting plate between adjacent lower matte strips forms a lower light-transmitting area.

[0051] Preferably, there are three lower matt strips and four lower light-transmitting areas corresponding to each matt film, and each lower reflective film is connected to the lower light-transmitting area. The lower matt strip is long, and its length is arranged along the width direction of the frame, and its width is arranged along the length direction of the frame and the length direction of the tunnel.

[0052] When sunlight hits the upper light-transmitting plate, it is mainly divided into two parts. One part of the light passes through the upper light-transmitting area and enters the lower light-transmitting plate, and the other part of the light is absorbed by the matte film to achieve the first attenuation of light. Most of the light that enters the lower light-transmitting plate will hit the lower reflective film. After hitting the lower reflective film, the light is divided into three parts. One part of the light goes out from the upper light-transmitting area through the reflection of the lower reflective film, and one part of the light is reflected by the lower reflective film to the upper matte strip and absorbed to achieve the second attenuation of light, and one part of the light is reflected by the lower reflective film to the upper reflective film. After the light reflected to the upper reflective film is reflected by the upper reflective film, one part of the light passes through the lower light-transmitting area and enters the tunnel entrance, and the other part of the light is absorbed by the lower matte strip to achieve the third attenuation of light. The light is reflected and absorbed between the upper and lower reflective films, the matte film, and the upper and lower matte strips in the grating structure, so that the natural light outside the tunnel completes the third attenuation when passing through the structure. When the driver enters or exits the tunnel from the natural light environment, the human eye can have enough time and a suitable light gradient to adapt to the brightness difference inside and outside.

[0053] Preferably, the upper light-transmitting plate includes A plates 1 and B plates 2 which are alternately arranged along the length direction and width direction of the skeleton 5, and the lower light-transmitting plate includes C plates 3 and D plates 4 which are alternately arranged along the length direction and width direction of the skeleton 5, respectively. The A plates 1 and C plates 3 which are respectively light-transmitting correspond to each other in upper and lower positions, and the B plates 2 and D plates 4 which are respectively light-transmitting correspond to each other in upper and lower positions.

[0054] The top surface of the A plate 1 is divided into 3X3 grids, and the four corners of the top surface of the A plate 1 and the five grids in the center area are respectively provided with matte films, and the matte film on the A plate 1 is set as the A plate top matte film 8, and the A plate 1 of the remaining grids is the upper light-transmitting area, which is set as the A plate light-transmitting area 6; the A plate bottom light reflection films 14 and the A plate bottom matte strips 12 arranged alternately are provided at the corresponding positions below each matte film on the bottom surface of the A plate 1; preferably, four A plate bottom light reflection films 14 and three A plate bottom matte strips 12 are corresponding to each matte film. The A plate bottom light reflection films 14 and the A plate bottom matte strips 12 are in the shape of long strips.

[0055] The top surface of the B board 2 is evenly divided into 3X3 grids, and the five grids at the four corners and the center area of ​​the top surface of the B board 2 are respectively the upper light-transmitting areas, which are set as the B board light-transmitting areas 7, and the B boards 2 in the other grids are respectively provided with matte films, and the matte films on the B boards are set as the B board top matte films 9; the bottom surface of the B board 2 is provided with alternatingly arranged B board bottom light reflecting films 15 and B board bottom matte strips 13 at the corresponding positions below each matte film, and the B board bottom light reflecting films 15 and the B board bottom matte strips 13 are in the shape of long strips; preferably, there are four B board bottom light reflecting films 15 and three B board bottom matte strips 13 corresponding to the bottom of each matte film.

[0056] The top surface of the C-board 3 is evenly divided into 3X3 grids, and the four corners of the top surface of the C-board 3 and the five grids in the central area are respectively provided with a plurality of C-board top extinction strips 18 arranged at intervals, and the remaining grids are provided with C-board top light reflectors 10; the interval between two adjacent C-board top extinction strips 18 is a lower light-transmitting area, which is set as a C-board light-transmitting area 16, and a plurality of long strips of C-board top extinction strips 18 are respectively provided in the five grids, preferably four lower light-transmitting areas and three C-board top extinction strips 18.

[0057] The top surface of the D-board 4 is evenly divided into 3X3 grids, and the five grids at the four corners and the center area of ​​the top surface of the D-board 4 are respectively provided with a D-board top light reflecting film 11, and the remaining grids are provided with a plurality of D-board top extinction strips 19 arranged at intervals; the interval between two adjacent D-board top extinction strips 19 is a lower light-transmitting area, which is set as a D-board light-transmitting area 17, and the remaining four grids are provided with a plurality of long strips of D-board top extinction strips 19, preferably four lower light-transmitting areas and three D-board top light reflecting films 11.

[0058] The upper matting strips include the A-plate bottom matting strips 12 and the B-plate bottom matting strips 13, the lower matting strips include the C-plate top matting strips 18 and the D-plate top matting strips 19, and the lower reflective film includes the C-plate top light reflector 10 and the D-plate top light reflective film 11. The upper light-transmitting area includes the A-plate light-transmitting area 6 and the B-plate light-transmitting area 7, and the lower light-transmitting area includes the C-plate light-transmitting area 16 and the D-plate light-transmitting area 17.

[0059] The matte film is 100% efficient, and the ABCD plates are all made of translucent materials. When sunlight shines on the A plate 1 and the B plate 2, part of the light passes through the A plate light-transmitting area 6 and the B plate light-transmitting area 7 through the A plate 1 and the B plate 2, and part of the light is absorbed by the A plate top matte film 8 and the B plate top matte film 9, thus achieving the first light attenuation. The light passing through the A plate light-transmitting area 6 and the B plate light-transmitting area 7 irradiates the C plate top light-reflecting film 10 and the D plate top light-reflecting film 11, and part of the light is reflected through the A plate light-transmitting area 6 and the B plate light-transmitting area 7, and part of the light is reflected to the A plate bottom matte strip 12 and the B plate bottom matte strip 13 and absorbed, thus achieving the second light attenuation. The light passing through the top light reflection film 10 of the C plate and the top light reflection film 11 of the D plate is reflected to the bottom light reflection film 14 of the A plate and the bottom light reflection film 15 of the B plate. Through the reflection of the light, part of it passes through the light-transmitting area 16 of the C plate and the light-transmitting area 17 of the D plate and enters the interior of the tunnel opening, and part of it is absorbed by the top light-expansion strip 18 of the C plate and the top light-expansion strip 19 of the D plate, realizing the third attenuation of the light. The natural light outside the tunnel opening is attenuated three times through the sunlight brightness attenuation laminated grating structure outside the tunnel, so as to adjust the sunlight brightness of the tunnel entrance section and the exit section. The required light attenuation brightness is achieved by adjusting the width and arrangement density of the bottom light-expansion strip 12 of the A plate, the bottom light-expansion strip 13 of the B plate, the top light-expansion strip 18 of the C plate, and the top light-expansion strip 19 of the D plate.

[0060] Preferably, the frame 5 includes an upper frame, a lower frame, and an up-and-down moving part. The upper frame and the lower frame are connected in a vertical sliding manner, and the upper light-transmitting plate and the lower light-transmitting plate are integrated on the upper frame and the lower frame, respectively. The lower frame is fixedly connected to the tunnel, and the up-and-down moving part drives the upper frame to be adjustable in height relative to the lower frame. This design can improve the applicability of the laminated grating structure and is applicable to different lighting areas.

[0061] Optionally, the upper frame and the lower frame are frame structures respectively, four upward sliding columns are fixed at the four corners of the lower frame, and four sliding sleeves are provided at the corresponding four corners of the upper frame to slide with the sliding columns. The sliding columns can be inserted into the sliding sleeves, and different insertion lengths correspond to different distances between the upper frame and the lower frame. The up and down moving parts are used to control the different distances between the upper frame and the lower frame. Preferably, a plurality of vertical cylinders can be used, one end of the cylinder is fixed to the lower frame, and the free end of the cylinder is fixed to the upper frame.

[0062] Optionally, the upper frame and the lower frame are frame structures respectively, and the up and down moving parts include four electric telescopic rods arranged at the four corners of the frame, and the electric telescopic rods are arranged on the lower frame to drive the upper frame to move up and down.

[0063] The controller and the sun photometer are also included. The sun photometer is used to measure the brightness data of the vehicle passing under the frame 5. The controller controls the upper and lower moving parts to drive the upper frame to move according to the brightness data. This design is to adapt to the light changes in different weather or time in a region or the changes in the site of entering and exiting the tunnel, and make real-time adjustments.

[0064] Preferably, the skeleton 5 comprises an upper skeleton, a lower skeleton, and a horizontal moving component, and the upper light-transmitting plate and the lower light-transmitting plate are respectively integrated on the upper skeleton and the lower skeleton.

[0065] The lower frame is fixedly connected to the tunnel, and the horizontal moving component is connected to the lower frame and drives the upper frame to move relative to the lower frame along the width direction of the frame 5.

[0066] Optionally, the horizontal moving part adopts a linear module, the upper frame and the lower frame are frame structures respectively, and the lower frame is fixedly connected to the tunnel. The two sides of the lower frame arranged along the width direction of the frame are provided with a linear module body, and the length direction of each linear module body is along the width direction of the frame. The sliders that slide with the linear module body are fixed on the upper frame, and the two sliders fixedly support the two ends of the upper frame. The upper frame moves along the width of the frame to adjust the attenuation brightness of the required light.

[0067] Optionally, the horizontal moving component adopts a cylinder, and the upper skeleton and the lower skeleton are frame structures respectively, and the lower skeleton is fixedly connected to the tunnel. The upper skeleton and the lower skeleton are slidably connected in the width direction of the skeleton. The two sides of the lower skeleton arranged along the width direction of the skeleton are provided with tracks, and the sliders that slide with the tracks are fixed on the upper skeleton, and the two sliders fixedly support the two ends of the upper skeleton. The horizontally arranged cylinders are arranged along the width direction of the skeleton, and the two cylinders are fixed on the outside of the lower skeleton. The free ends of the cylinders are fixed on the upper skeleton, and the cylinders push the upper skeleton to move. The upper skeleton moves along the width of the skeleton to adjust the attenuation brightness of the required light.

[0068] It also includes a controller and a sun photometer, the sun photometer is used to measure the brightness data below the frame 5, and the controller controls the horizontal moving component to drive the upper frame to move according to the brightness data. This design is to adapt to the light changes in different weather or time in a region and make real-time adjustments.

[0069] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A laminated grating structure for attenuating sunlight brightness outside a tunnel, characterized in that: It comprises an upper light-transmitting plate and a lower light-transmitting plate which are arranged in an upper and lower interval and are respectively arranged on a frame (5), and the frame (5) is connected to the tunnel; A plurality of rectangular matt films are arranged in an array along the length direction and the width direction of the frame (5) on the top surface of the upper light-transmitting plate and are arranged at intervals; On the bottom surface of the upper light-transmitting plate, at corresponding positions below each of the light-deflecting films, a plurality of upper light-deflecting strips are arranged in an array along the length direction of the frame (5) and an upper reflective film is provided between adjacent upper light-deflecting strips. The upper reflective films and upper light-deflecting strips on the bottom surface of the upper light-transmitting plate are alternately arranged in sequence along the length direction of the frame (5); The upper light-transmitting plate between the adjacent matt films forms an upper light-transmitting area; A plurality of lower reflective films are arrayed at intervals on the top surface of the lower light-transmitting plate along the length direction and the width direction of the frame (5), the lower reflective films are located at corresponding positions below the upper light-transmitting area, and the outer surface of the lower reflective film is an upwardly convex curved surface as a whole; On the top surface of the lower light-transmitting plate, at corresponding positions below each of the light-deflecting films, a plurality of lower light-deflecting strips are arranged in an array along the length direction of the frame (5) at intervals, and the lower light-transmitting plate between adjacent lower light-deflecting strips forms a lower light-transmitting area.

2. The laminated grating structure for attenuating sunlight brightness outside a tunnel according to claim 1, characterized in that: The upper light-transmitting plate comprises A plates (1) and B plates (2) which are arranged alternately along the length direction and width direction of the frame (5), and the lower light-transmitting plate comprises C plates (3) and D plates (4) which are arranged alternately along the length direction and width direction of the frame (5), respectively, the A plates (1) and C plates (3) which are respectively light-transmitting are located in corresponding upper and lower positions, and the B plates (2) and D plates (4) which are respectively light-transmitting are located in corresponding upper and lower positions; The top surface of the A plate (1) is evenly divided into 3×3 grids, and the matte films are respectively provided at the four corners and five grids in the center area of ​​the top surface of the A plate (1), and the remaining grids of the A plate (1) are the upper light-transmitting areas; the A plate bottom light reflection films (14) and A plate bottom matte strips (12) are alternately arranged at corresponding positions below each of the matte films on the bottom surface of the A plate (1); The top surface of the B plate (2) is evenly divided into 3×3 grids, the four corners of the top surface of the B plate (2) and the five grids in the center area are respectively the upper light-transmitting areas, and the B plate (2) in the remaining grids are respectively provided with the matte film; the bottom surface of the B plate (2) is provided with B plate bottom light reflection films (15) and B plate bottom matte strips (13) arranged alternately at corresponding positions below each of the matte films; The top surface of the C plate (3) is evenly divided into 3×3 grids, and the four corners of the top surface of the C plate (3) and five grids in the central area are respectively provided with a plurality of C plate top extinction strips (18) arranged at intervals, and the remaining grids are provided with C plate top light reflectors (10); The top surface of the D plate (4) is evenly divided into 3×3 grids, the four corners of the top surface of the D plate (4) and five grids in the center area are respectively provided with D plate top light reflection films (11), and the remaining grids are provided with a plurality of D plate top extinction strips (19) arranged at intervals; The upper matte strip comprises the A-plate bottom matte strip (12) and the B-plate bottom matte strip (13), the lower matte strip comprises the C-plate top matte strip (18) and the D-plate top matte strip (19), the lower reflection film comprises the C-plate top light reflector (10) and the D-plate top light reflection film (11), and the upper reflection film comprises the A-plate bottom light reflection film (14) and the B-plate bottom light reflection film (15).

3. The laminated grating structure for attenuating sunlight brightness outside a tunnel according to claim 1, characterized in that: The lower reflection film is a partial spherical surface.

4. The laminated grating structure for attenuating sunlight brightness outside a tunnel according to claim 1, characterized in that: The frame (5) comprises an upper frame, a lower frame, and an up-and-down moving component, the upper frame and the lower frame are vertically slidably connected, and the upper light-transmitting plate and the lower light-transmitting plate are respectively integrated on the upper frame and the lower frame; The lower frame is fixedly connected to the tunnel, and the up-and-down moving component drives the upper frame to be adjustable in height relative to the lower frame.

5. The laminated grating structure for attenuating sunlight brightness outside a tunnel according to claim 4, characterized in that: It also comprises a controller and a sun photometer, wherein the sun photometer is used to measure the brightness data below the skeleton (5), and the controller controls the up-and-down moving component to drive the upper skeleton to move according to the brightness data.

6. The laminated grating structure for attenuating sunlight brightness outside a tunnel according to claim 1, characterized in that: The frame (5) comprises an upper frame, a lower frame, and a horizontal moving component, and the upper light-transmitting plate and the lower light-transmitting plate are respectively integrated on the upper frame and the lower frame; The lower frame is fixedly connected to the tunnel, and the horizontal moving component is connected to the lower frame and drives the upper frame to move relative to the lower frame along the width direction of the frame (5).

7. The laminated grating structure for attenuating sunlight brightness outside a tunnel according to claim 6, characterized in that: It also comprises a controller and a sun photometer, wherein the sun photometer is used to measure the brightness data below the skeleton (5), and the controller controls the horizontal moving component to drive the upper skeleton to move according to the brightness data.

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