阅读说明：本技术 一种高速公路隧道照明装置及其施工方法 (Highway tunnel lighting device and construction method thereof ) 是由 李旭 于 2021-07-27 设计创作，主要内容包括：本发明公开了一种高速公路隧道照明装置及其施工方法,涉及高速公路隧道相关领域,为解决目前隧道根据白天黑夜对照明灯具的调节作用不明显,开启不同数量的灯具使亮度不同,但对特殊的视觉现象的削弱作用也较弱,不满足隧道内部根据外界环境光线调节的要求的问题。所述照明调节单元包括固定箱体,所述固定箱体一侧的上下端均固定连接有第一转动件,所述第一转动件上通过第四转动件转动连接有驱动油缸,所述驱动油缸的输出杆端固定连接有连接盘,所述连接盘的另一端固定连接有第二转动件,所述固定箱体一侧的中间设置有照明组件,所述照明组件外侧的两端固定连接有侧连接耳,侧连接耳与第二转动件转动连接。(The invention discloses an expressway tunnel lighting device and a construction method thereof, relates to the relevant field of expressway tunnels, and aims to solve the problems that the adjusting effect of the conventional tunnel on lighting lamps according to the daytime and the night is not obvious, different numbers of lamps are started to enable the brightness to be different, the weakening effect on special visual phenomena is weak, and the requirement of adjusting the interior of the tunnel according to external environment light is not met. The illumination adjusting unit comprises a fixed box body, a first rotating piece is fixedly connected to the upper end and the lower end of one side of the fixed box body, a driving oil cylinder is rotatably connected to the first rotating piece through a fourth rotating piece, a connecting disc is fixedly connected to an output rod of the driving oil cylinder, a second rotating piece is fixedly connected to the other end of the connecting disc, an illumination assembly is arranged in the middle of one side of the fixed box body, side connecting lugs are fixedly connected to the two ends of the outer side of the illumination assembly, and the side connecting lugs are rotatably connected with the second rotating piece.)

1. An expressway tunnel lighting device comprising a lighting adjusting unit (4), characterized in that: the illumination adjusting unit (4) comprises a fixed box body (20), the upper end and the lower end of one side of the fixed box body (20) are fixedly connected with a first rotating piece (15), the first rotating piece (15) is rotatably connected with a driving oil cylinder (16) through a fourth rotating piece, the output rod end of the driving oil cylinder (16) is fixedly connected with a connecting disc (17), the other end of the connecting disc (17) is fixedly connected with a second rotating piece (18), an illumination assembly (19) is arranged in the middle of one side of the fixed box body (20), two ends of the outer side of the illumination assembly (19) are fixedly connected with side connecting lugs (29), the side connecting lugs (29) are rotatably connected with the second rotating piece (18), a rotating motor (21) is installed at the upper end inside the fixed box body (20), and a driving rotating disc (22) is fixedly connected with the output shaft end of the rotating motor (21), the centre of terminal surface is provided with semi-ring tooth portion (23) under drive rolling disc (22), the lower extreme meshing of semi-ring tooth portion (23) is connected with driven gear, driven gear's front end fixedly connected with driven rolling disc (24), it is connected with first dwang (25) to rotate on driven rolling disc (24), the other end of first dwang (25) rotates and is connected with second dwang (26), the other end of second dwang (26) rotates and is connected with third dwang (27), lighting assembly (19) include third rotation piece (42), and the other end of third dwang (27) extends to the fixed box (20) outside and is connected with third rotation piece (42).

2. The lighting device for the expressway tunnel according to claim 1, wherein: illumination component (19) are including outer protection body (28), spout (32) have all been seted up to the upper end and the lower extreme of outer protection body (28) inner wall both sides, outer protection body (28) inside is provided with tunnel lamps and lanterns (39), the middle fixedly connected with mount (40) in the tunnel lamps and lanterns (39) outside, the both sides of mount (40) are provided with spacing sliding part (41), and spacing sliding part (41) slide along spout (32).

3. The lighting device for the expressway tunnel according to claim 1, wherein: the lighting device is characterized in that a mounting plate (1) is arranged on the other side of the two lighting adjusting units (4), longitudinal sliding grooves (3) are formed in the upper end and the lower end of the mounting plate (1) close to the middle of one side surface of the lighting adjusting units (4), a height adjusting motor (5) is installed in the middle of one side of the mounting plate (1) through a motor support (6), an adjusting inner cavity (7) is formed in the mounting plate (1), a driving gear (8) is installed in the middle of the adjusting inner cavity (7), an output shaft of the height adjusting motor (5) penetrates through the mounting plate (1) to be connected with the driving gear (8) through a key groove, L-shaped longitudinal sliding plates (9) are arranged in the adjusting inner cavity (7) along two sides of the driving gear (8), the two L-shaped longitudinal sliding plates (9) are centrosymmetric by taking the center of the driving gear (8), and a connecting tooth part (12) is arranged on one side, in contact with the driving gear (8), of the L-shaped longitudinal sliding plates (9), the connecting tooth section (12) is meshed with the driving gear (8).

4. A highway tunnel lighting device according to claim 3, wherein: the upper end fixedly connected with connecting plate (14) that fixed box (20) is close to mounting panel (1) one side, the opposite side fixedly connected with fixed plate (13) of connected plate (14), the outer end along connecting tooth portion (12) is provided with fixed part (10) on L type longitudinal sliding plate (9), and fixed plate (13) pass longitudinal sliding groove (3) and are fixed with fixed part (10), the inner along connecting tooth portion (12) is provided with spacing portion (11) on L type longitudinal sliding plate (9).

5. The lighting device for the expressway tunnel according to claim 2, wherein: the middle in outer protection body (28) outside is provided with fin (30), outside protection body (28) inside is fixed with light screen (33) along the inboard of fin (30), the inside one end of outer protection body (28) is provided with protection casing (34), the both sides of protection casing (34) are provided with spacing ear (35), and it is fixed that spacing ear (35) rotate after sliding entering along spout (32).

6. The lighting device for the expressway tunnel according to claim 2, wherein: the cross direction fixedly connected with first fixed ear (31) of outer protection body (28) outside lower extreme, the lower extreme of outer protection body (28) is provided with mounting (36), the cross direction in mounting (36) outside corresponds fixed ear (37) of position fixedly connected with second with first fixed ear (31), be provided with middle through hole (38) in the middle of mounting (36), and middle through hole (38) diameter is greater than the maximum diameter that the third rotated piece (42).

7. A highway tunnel lighting device according to claim 3, wherein: mounting holes (2) are formed in the four corners of the mounting plate (1).

8. A construction method of an expressway tunnel lighting device is realized based on the expressway tunnel lighting device of any one of claims 1 to 7, and is characterized by comprising the following steps of:

the method comprises the following steps: the limiting lug (35) of the protective cover (34) is placed into the outer protective pipe body (28) along the sliding groove (32), then the protective cover (34) is rotated to enable the limiting lug (35) to be clamped into the outer protective pipe body (28), then the limiting sliding part (41) on the outer fixing frame (40) of the tunnel lamp (39) is placed into the outer protective pipe body (28) along the sliding groove (32), the second fixing lug (37) on the fixing piece (36) is aligned with the first fixing lug (31) on the outer protective pipe body (28), and the fixing is achieved through bolts;

step two: a second rotating part (18) fixed at the output rod end of the driving oil cylinder (16) is aligned with the side connecting lug (29) and is fixed by shaft rotation, a fourth rotating part at the other end of the driving oil cylinder (16) is aligned with the first rotating part (15) and is fixed by shaft rotation, and a third rotating part (42) is aligned with a third rotating rod (27) in the fixed box body (20) and is fixed by shaft rotation;

step three: a driving gear (8) and an L-shaped longitudinal sliding plate (9) are arranged in the mounting plate (1), and a height adjusting motor (5) is fixed on the mounting plate (1) by a motor bracket (6) so that an output shaft of the height adjusting motor (5) is connected with the driving gear (8) through a key slot;

step four: fixing a connecting plate (14) extending to the outside of the mounting plate (1) and a fixed box body (20) to complete the assembly of the lighting device;

step five: the mounting positions are annularly arranged in the tunnel, the mounting positions are arranged towards the other end of the tunnel at equal intervals, and the mounting support is fixed on the inner wall of the tunnel, so that the mounting support and the lighting device are fixed through the mounting holes (2) in the mounting plate (1).

Technical Field

The invention relates to the related field of expressway tunnels, in particular to an expressway tunnel lighting device and a construction method thereof.

Background

The tunnel illumination can improve the road surface condition in the tunnel, improves the vision enjoyment in the tunnel, alleviates driver fatigue, is favorable to improving tunnel throughput and guarantees traffic safety. Some special visual phenomena must be considered in tunnel lighting, and in order to optimally design tunnel lighting, it is necessary to know some basic visual problems. During the day, drivers encounter the following visual problems when entering tunnels: the brightness outside the tunnel is much higher than that inside the tunnel just after entering the tunnel in the daytime, and if the tunnel is long enough, a driver sees a very dark hole, which is a phenomenon of 'black holes'; if the tunnel is short, a "black box" is presented to the driver. After entering the tunnel, the tunnel enters a darker tunnel from a bright outer part, the vision has a certain adaptation time, and then the condition inside the tunnel can be seen clearly, which is called as an adaptive hysteresis phenomenon. In the middle section of the tunnel, smoke is formed due to the gathering of exhaust gas exhausted by automobiles, light of automobile headlamps can be absorbed and scattered by the smoke to form a light curtain, the brightness contrast between a front obstacle and a background (a road surface and a wall surface) of the front obstacle is reduced, the visibility of the obstacle is influenced, and the visual function is adversely affected. A bright exit appears at the exit of the tunnel, and strong glare is generated for a driver, so that the driver cannot see the road condition clearly, and traffic accidents are easy to happen. For this purpose, tunnel lighting is generally divided into entrance lighting, interior lighting and exit lighting. In which the requirements for entrance lighting are more stringent, with the requirements decreasing from a brightness similar to the outside. Specifically, the brightness of the illumination at the entrance of the daytime tunnel is determined according to the brightness outside the tunnel, the vehicle speed, the field of view at the entrance and the length of the tunnel.

At present, the tunnel has unobvious adjusting effect on lighting lamps according to day and night, different numbers of lamps are started to ensure different brightness, but the weakening effect on special visual phenomena is weaker, and the requirement of adjusting the interior of the tunnel according to external environment light is not met; therefore, the market urgently needs to develop an expressway tunnel lighting device and a construction method thereof to help people solve the existing problems.

Disclosure of Invention

The invention aims to provide a highway tunnel lighting device and a construction method thereof, and aims to solve the problems that the prior tunnel proposed in the background technology has an unobvious regulation effect on lighting lamps according to day and night, different numbers of lamps are started to ensure different brightness, but the weakening effect on special visual phenomena is weak, and the requirement of regulating the interior of the tunnel according to external environment light is not met.

In order to achieve the purpose, the invention provides the following technical scheme: a lighting device for a highway tunnel comprises a lighting adjusting unit, wherein the lighting adjusting unit comprises a fixed box body, a first rotating piece is fixedly connected to the upper end and the lower end of one side of the fixed box body, a driving oil cylinder is rotatably connected to the first rotating piece through a fourth rotating piece, a connecting disc is fixedly connected to the output rod end of the driving oil cylinder, a second rotating piece is fixedly connected to the other end of the connecting disc, a lighting assembly is arranged in the middle of one side of the fixed box body, side connecting lugs are fixedly connected to the two ends of the outer side of the lighting assembly and rotatably connected with the second rotating piece, a rotating motor is installed at the upper end of the inner part of the fixed box body, a driving rotating disc is fixedly connected to the output shaft end of the rotating motor, a semi-annular tooth part is arranged in the middle of the lower end face of the driving rotating disc, and a driven gear is meshed with the lower end of the semi-annular tooth part, driven gear's front end fixedly connected with driven rolling disc, it is connected with first dwang to rotate on the driven rolling disc, the other end of first dwang rotates and is connected with the second dwang, the other end of second dwang rotates and is connected with the third dwang, lighting components includes that the third rotates the piece, and the other end of third dwang extends to the fixed box outside and rotates the piece with the third and be connected.

Preferably, the lighting assembly comprises an outer protection tube body, sliding grooves are formed in the upper end and the lower end of two sides of the inner wall of the outer protection tube body, a tunnel lamp is arranged inside the outer protection tube body, a fixing frame is fixedly connected to the middle of the outer side of the tunnel lamp, limiting sliding portions are arranged on two sides of the fixing frame, and the limiting sliding portions slide along the sliding grooves.

Preferably, two the opposite side of illumination regulating unit is provided with the mounting panel, the mounting panel is close to the upper and lower both ends in the middle of the illumination regulating unit side and is provided with vertical chute, there is high adjustment motor through motor support mounting in the middle of mounting panel one side, the inside of mounting panel is provided with adjusts the inner chamber, adjust the inside centre of inner chamber and install drive gear, high adjustment motor output shaft passes the mounting panel and passes through the keyway with drive gear and be connected, it is provided with L type longitudinal sliding plate, two to adjust the inside both sides along drive gear of inner chamber L type longitudinal sliding plate uses the drive gear center as centre of a circle central symmetry, L type longitudinal sliding plate is provided with connecting teeth portion with drive gear contact one side, connecting teeth portion and drive gear meshing.

Preferably, the upper end of the fixed box body close to one side of the mounting plate is fixedly connected with a connecting plate, the other side of the connecting plate is fixedly connected with a fixed plate, the L-shaped longitudinal sliding plate is provided with a fixed part along the outer end of the connecting tooth part, the fixed plate penetrates through the longitudinal sliding groove to be fixed with the fixed part, and the L-shaped longitudinal sliding plate is provided with a limiting part along the inner end of the connecting tooth part.

Preferably, the middle of the outer side of the outer protection pipe body is provided with a radiating fin, a light screen is fixed inside the outer protection pipe body along the inner side of the radiating fin, one end inside the outer protection pipe body is provided with a protection cover, two sides of the protection cover are provided with limiting lugs, and the limiting lugs are fixed in a rotating mode after entering along a sliding groove in a sliding mode.

Preferably, the cross direction fixedly connected with first fixed ear of outer protection body outside lower extreme, the lower extreme of outer protection body is provided with the mounting, the cross direction in the mounting outside and the fixed ear of first fixed ear corresponding position fixedly connected with second, be provided with middle through hole in the middle of the mounting, middle through hole diameter is greater than the maximum diameter that the third rotated the piece.

Preferably, the four corners of the mounting plate are provided with mounting holes.

A construction method of an expressway tunnel lighting device comprises the following steps:

the method comprises the following steps: the limiting lug of the protective cover is placed into the outer protective tube body along the sliding groove, then the protective cover is rotated to enable the limiting lug to be clamped into the outer protective tube body, the limiting sliding part on the fixing frame on the outer side of the tunnel lamp is placed into the outer protective tube body along the sliding groove, the second fixing lug on the fixing piece is aligned with the first fixing lug on the outer protective tube body, and the fixing piece is fixed through the bolt;

step two: the second rotating part fixed at the output rod end of the driving oil cylinder is aligned with the side connecting lug and is rotationally fixed by a shaft, the fourth rotating part at the other end of the driving oil cylinder is aligned with the first rotating part and is rotationally fixed by the shaft, and the third rotating part is aligned with a third rotating rod in the fixed box and is rotationally fixed by the shaft;

step three: the driving gear and the L-shaped longitudinal sliding plate are arranged in the mounting plate, the height adjusting motor is fixed on the mounting plate by using the motor bracket, and the output shaft of the height adjusting motor is connected with the driving gear through a key slot;

step four: fixing the connecting plate extending to the outside of the mounting plate with the fixed box body to complete the assembly of the lighting device;

step five: the mounting positions are annularly arranged in the tunnel, the mounting positions are arranged towards the other end of the tunnel at equal intervals, and the mounting bracket is fixed on the inner wall of the tunnel, so that the mounting bracket and the lighting device are fixed through the mounting holes in the mounting plate.

Compared with the prior art, the invention has the beneficial effects that:

1. in the invention, when the external environment is changed from dark to bright, the rotating motors in the two lighting adjusting units drive the rotating disc to rotate, the semi-annular tooth part on the driving rotating disc is meshed with the gear fixed at the rear end of the driven rotating disc, the driven rotating disc synchronously and reversely rotates, the third rotating disc is driven to shrink towards the inside of the fixed box body through the linkage of the first rotating disc and the second rotating disc, the tunnel lamp is driven to move in the outer protective tube body in a limiting manner through the third rotating disc, and the distance between the tunnel lamp and the protective cover is increased; meanwhile, the output rod of the driving oil cylinder at the upper end of the illumination adjusting unit at the upper end of each illuminating device extends, the output rod of the driving oil cylinder at the lower end of the illumination adjusting unit at the upper end of each illuminating device contracts, the output rod of the driving oil cylinder at the upper end of the illumination adjusting unit at the lower end of each illuminating device contracts, the output rod of the driving oil cylinder at the lower end of the illumination adjusting unit at the lower end extends, and the two illumination adjusting units on each illuminating device rotate inwards. The light beams converge, the light beams are gradually concentrated, and the brightness is further increased, so that the phenomenon of black holes or black frames is reduced. The external environment is reversely driven by the structures when the light changes from dark to bright, the distance between the tunnel lamp and the protective cover is reduced, the two illumination adjusting units on each illuminating device rotate outwards, the collection of light is reduced, the light is scattered, the range is larger, and the light is more scattered. Therefore, the problems that the adjusting effect of the tunnel on the illumination lamps in the day and at night is not obvious, lamps with different numbers are started to enable the brightness to be different, the weakening effect on special visual phenomena is weak, and the requirement of adjusting the interior of the tunnel according to the external environment light is not met are solved.

2. In the invention, when the external environment is changed from dark to bright, the height adjusting motor drives the driving gear to rotate clockwise, the two L-shaped longitudinal sliding plates are close to each other, the connecting plates fixed with the fixing part through the fixing plate are close to each other along the longitudinal sliding groove, and the two illumination adjusting units on each illumination device are close to each other; when the external environment is changed from bright to dark, the height adjusting motor drives the driving gear to rotate anticlockwise, the two L-shaped longitudinal sliding plates are far away from each other, the connecting plates fixed with the fixing parts through the fixing plates are far away from each other along the longitudinal sliding grooves, and the two illumination adjusting units on each illumination device are far away from each other. The cooperation illumination direction realizes the concentration or the dispersion of light, and the problem of the inside requirement of adjusting according to external environment light of unsatisfied tunnel of present illumination is solved in the assistance.

Drawings

Fig. 1 is a schematic overall structure view of an expressway tunnel lighting device according to the present invention;

fig. 2 is a schematic view of the internal structure of a mounting plate of the lighting device for the highway tunnel according to the present invention;

fig. 3 is a schematic structural diagram of a lighting adjusting unit of the lighting device for the expressway tunnel according to the present invention;

fig. 4 is a schematic view showing a change in the internal structure of a fixed box of an expressway tunnel illumination device according to the present invention;

fig. 5 is an exploded view of a lighting assembly of the lighting device for the highway tunnel according to the present invention.

In the figure: 1. mounting a plate; 2. mounting holes; 3. a longitudinal chute; 4. an illumination adjustment unit; 5. a height adjustment motor; 6. a motor bracket; 7. adjusting the inner cavity; 8. a drive gear; 9. an L-shaped longitudinal sliding plate; 10. a fixed part; 11. a limiting part; 12. a connecting tooth portion; 13. a fixing plate; 14. a connecting plate; 15. a first rotating member; 16. a driving oil cylinder; 17. a connecting disc; 18. a second rotating member; 19. a lighting assembly; 20. fixing the box body; 21. rotating the motor; 22. driving the rotating disc; 23. a semi-annular tooth portion; 24. a driven rotating disk; 25. a first rotating lever; 26. a second rotating lever; 27. a third rotating rod; 28. an outer protective tube body; 29. a side engaging lug; 30. a heat sink; 31. a first fixing lug; 32. a chute; 33. a visor; 34. a protective cover; 35. a limiting lug; 36. a fixing member; 37. a second fixing lug; 38. a middle through hole; 39. a tunnel luminaire; 40. a fixed mount; 41. a limiting sliding part; 42. a third rotating member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-5, an embodiment of the present invention is shown: a highway tunnel lighting device comprises a lighting adjusting unit 4, the lighting adjusting unit 4 comprises a fixed box body 20, the upper end and the lower end of one side of the fixed box body 20 are fixedly connected with a first rotating piece 15, the first rotating piece 15 is rotatably connected with a driving oil cylinder 16 through a fourth rotating piece, the output rod end of the driving oil cylinder 16 is fixedly connected with a connecting plate 17, the other end of the connecting plate 17 is fixedly connected with a second rotating piece 18, a lighting assembly 19 is arranged in the middle of one side of the fixed box body 20, two ends of the outer side of the lighting assembly 19 are fixedly connected with side connecting lugs 29, the side connecting lugs 29 are rotatably connected with the second rotating piece 18, a rotating motor 21 is installed at the upper end inside the fixed box body 20, a driving rotating disc 22 is fixedly connected with the output shaft end of the rotating motor 21, a semi-annular tooth part 23 is arranged in the middle of the lower end face of the driving rotating disc 22, and the lower end of the semi-annular tooth part 23 is engaged with a driven gear, driven gear's front end fixedly connected with driven rolling disc 24, it is connected with first dwang 25 to rotate on the driven rolling disc 24, the other end of first dwang 25 rotates and is connected with second dwang 26, the other end of second dwang 26 rotates and is connected with third dwang 27, lighting assembly 19 includes third dwang 42, the other end of third dwang 27 extends to the fixed box 20 outside and is connected with third dwang 42, rotation motor 21 drive rolling disc 22 in two illumination regulating unit 4 rotates, the synchronous antiport of driven dwang 24, the linkage through first dwang 25 and second dwang 26 drives third dwang 27 and removes. The output rod of the driving oil cylinder 16 at the upper end of the upper illumination adjusting unit 4 of each illumination device is contracted, the output rod of the driving oil cylinder 16 at the lower end of the upper illumination adjusting unit 4 is extended, the output rod of the driving oil cylinder 16 at the upper end of the lower illumination adjusting unit 4 of each illumination device is extended, the output rod of the driving oil cylinder 16 at the lower end of the lower illumination adjusting unit 4 of each illumination device is contracted, and two illumination adjusting units 4 on each illumination device are outwards rotated; the output rod of the driving cylinder 16 at the upper end of the upper illumination adjusting unit 4 of each illumination device is extended, the output rod of the driving cylinder 16 at the lower end of the upper illumination adjusting unit 4 is contracted, the output rod of the driving cylinder 16 at the upper end of the lower illumination adjusting unit 4 of each illumination device is contracted, the output rod of the driving cylinder 16 at the lower end of the lower illumination adjusting unit 4 of each illumination device is extended, and the two illumination adjusting units 4 on each illumination device are rotated inward.

Further, the lighting assembly 19 includes an outer protection tube 28, a heat sink 30 is disposed in the middle of the outer side of the outer protection tube 28, the heat is conducted out mainly through the heat conductivity of metal, a light shielding plate 33 is fixed inside the outer protection tube 28 along the inner side of the heat sink 30 to prevent light from irradiating outwards, thereby losing the adjusting effect of the tunnel lamp 39, a protective cover 34 is disposed at one end of the inner side of the outer protection tube 28, a limiting lug 35 is disposed at two sides of the protective cover 34, sliding grooves 32 are disposed at the upper end and the lower end of two sides of the inner wall of the outer protection tube 28, the limiting lug 35 slides along the sliding groove 32 and enters and then rotates and fixes, the tunnel lamp 39 is disposed inside the outer protection tube 28, the tunnel lamp 39 adopts a sodium lamp, a fixing frame 40 is fixedly connected in the middle of the outer side of the tunnel lamp 39, limiting sliding portions 41 are disposed at two sides of the fixing frame 40, the limiting sliding portions 41 slide along the sliding grooves 32, a first fixing lug 31 is fixedly connected in the cross direction at the lower end of the outer side of the outer protection tube 28, the lower end of the outer protective tube 28 is provided with a fixed part 36, a second fixed lug 37 is fixedly connected to the cross direction of the outer side of the fixed part 36 corresponding to the first fixed lug 31, a middle through hole 38 is arranged in the middle of the fixed part 36, and the diameter of the middle through hole 38 is larger than the maximum diameter of the third rotating part 42.

Further, the other side of the two lighting adjusting units 4 is provided with a mounting plate 1, the upper end of one side of the fixed box body 20 close to the mounting plate 1 is fixedly connected with a connecting plate 14, the other side of the connecting plate 14 is fixedly connected with a fixed plate 13, the outer end of the L-shaped longitudinal sliding plate 9 along the connecting tooth part 12 is provided with a fixed part 10, the fixed plate 13 passes through the longitudinal sliding groove 3 and is fixed with the fixed part 10, the L-shaped longitudinal sliding plate 9 moves to drive the fixed box body 20 to move synchronously, so that the two fixed box bodies 20 on each group of lighting devices are close to or away from each other to play a role in adjusting the distance, the inner end of the L-shaped longitudinal sliding plate 9 along the connecting tooth part 12 is provided with a limiting part 11, four corners on the mounting plate 1 are provided with mounting holes 2, the upper end and the lower end of the mounting plate 1 close to the middle of one side of the lighting adjusting units 4 are provided with the longitudinal sliding grooves 3, and the middle of one side of the mounting plate 1 is provided with a height adjusting motor 5 through a motor bracket 6, the inside of mounting panel 1 is provided with adjusts inner chamber 7, adjust the inside centre of inner chamber 7 and install drive gear 8, height adjusting motor 5 output shaft passes mounting panel 1 and passes through the keyway with drive gear 8 and be connected, it is provided with L type longitudinal sliding plate 9 to adjust the inside both sides along drive gear 8 of inner chamber 7, two L type longitudinal sliding plate 9 use drive gear 8 center as centre of a circle central symmetry, L type longitudinal sliding plate 9 is provided with connecting tooth portion 12 with drive gear 8 contact one side, connecting tooth portion 12 meshes with drive gear 8, L type longitudinal sliding plate 9 outside and mounting panel 1 inner wall sliding connection.

A construction method of an expressway tunnel lighting device comprises the following steps:

the method comprises the following steps: the limiting lug 35 of the protective cover 34 is placed into the outer protective tube body 28 along the sliding groove 32, then the protective cover 34 is rotated to enable the limiting lug 35 to be clamped into the outer protective tube body 28, then the limiting sliding part 41 on the fixing frame 40 on the outer side of the tunnel lamp 39 is placed into the outer protective tube body 28 along the sliding groove 32, the second fixing lug 37 on the fixing piece 36 is aligned with the first fixing lug 31 on the outer protective tube body 28, and the fixing is achieved through bolts;

step two: the second rotating part 18 fixed at the output rod end of the driving oil cylinder 16 is aligned with the side connecting lug 29 and is fixed by shaft rotation, the fourth rotating part at the other end of the driving oil cylinder 16 is aligned with the first rotating part 15 and is fixed by shaft rotation, and the third rotating part 42 is aligned with the third rotating rod 27 in the fixed box body 20 and is fixed by shaft rotation;

step three: a driving gear 8 and an L-shaped longitudinal sliding plate 9 are arranged in the mounting plate 1, the height adjusting motor 5 is fixed on the mounting plate 1 by using a motor bracket 6, and an output shaft of the height adjusting motor 5 is connected with the driving gear 8 through a key groove;

step four: fixing the connecting plate 14 extending to the outside of the mounting plate 1 and the fixed box body 20 to complete the assembly of the lighting device;

step five: the mounting positions are annularly arranged in the tunnel, the mounting positions are arranged towards the other end of the tunnel at equal intervals, and the mounting bracket is fixed on the inner wall of the tunnel, so that the mounting bracket and the lighting device are fixed through the mounting holes 2 on the mounting plate 1.

In practical use, the lighting devices are distributed in a semi-annular shape on the same plane and are arranged at equal intervals in the front-back direction.

The working principle is as follows: when the external environment changes from dark to bright, the height adjusting motor 5 drives the driving gear 8 to rotate clockwise, the two L-shaped longitudinal sliding plates 9 are close to each other, the connecting plate 14 fixed with the fixing part 10 through the fixing plate 13 is close to each other along the longitudinal sliding groove 3, and the two illumination adjusting units 4 on each illumination device are close to each other. Meanwhile, the rotating motors 21 in the two lighting adjusting units 4 drive the driving rotating disc 22 to rotate, the semi-annular tooth part 23 on the driving rotating disc 22 is meshed with a gear fixed at the rear end of the driven rotating disc 24, the driven rotating disc 24 synchronously and reversely rotates, the third rotating rod 27 is driven to contract towards the inside of the fixed box body 20 through the linkage of the first rotating rod 25 and the second rotating rod 26, the tunnel lamp 39 is driven to move in the outer protective tube body 28 in a limiting manner through the third rotating rod 42, and the distance between the tunnel lamp 39 and the protective cover 34 is increased; meanwhile, the output rod of the driving oil cylinder 16 at the upper end of the upper illumination adjusting unit 4 of each illumination device is extended, the output rod of the driving oil cylinder 16 at the lower end of the upper illumination adjusting unit 4 is contracted, the output rod of the driving oil cylinder 16 at the upper end of the lower illumination adjusting unit 4 of each illumination device is contracted, the output rod of the driving oil cylinder 16 at the lower end of the lower illumination adjusting unit 4 is extended, and the two illumination adjusting units 4 on each illumination device are rotated inwards. Because the distance between the tunnel lamp 39 and the protective cover 34 is increased, the light beams are relatively concentrated, and the two illumination adjusting units 4 are close to each other, so that the light beams are also concentrated, the two illumination adjusting units 4 rotate inwards, the light beams are converged, the light beams are gradually concentrated, the brightness is further increased, and the phenomenon of black holes or black frames is reduced.

When the external environment changes from bright to dark, the height adjusting motor 5 drives the driving gear 8 to rotate anticlockwise, the two L-shaped longitudinal sliding plates 9 are far away from each other, the connecting plate 14 fixed with the fixing part 10 through the fixing plate 13 is far away from each other along the longitudinal sliding groove 3, and the two illumination adjusting units 4 on each illumination device are far away from each other. Meanwhile, the rotating motors 21 in the two lighting adjusting units 4 drive the driving rotating disc 22 to rotate, the semi-annular tooth part 23 on the driving rotating disc 22 is meshed with a gear fixed at the rear end of the driven rotating disc 24, the driven rotating disc 24 synchronously and reversely rotates, the third rotating rod 27 is driven to move towards the outside of the fixed box body 20 through the linkage of the first rotating rod 25 and the second rotating rod 26, the tunnel lamp 39 is driven to move in a limiting manner in the outer protective tube body 28 through the third rotating rod 42, and the distance between the tunnel lamp 39 and the protective cover 34 is reduced; meanwhile, the output rod of the driving oil cylinder 16 at the upper end of the upper illumination adjusting unit 4 of each illumination device is contracted, the output rod of the driving oil cylinder 16 at the lower end of the upper illumination adjusting unit 4 is extended, the output rod of the driving oil cylinder 16 at the upper end of the lower illumination adjusting unit 4 of each illumination device is extended, the output rod of the driving oil cylinder 16 at the lower end of the lower illumination adjusting unit 4 is contracted, and two illumination adjusting units 4 on each illumination device are outwards rotated. Because the distance between tunnel lamp 39 and protection casing 34 reduces, the light diffusion scope is more enlarged, and two illumination adjusting unit 4 keep away from each other in addition, make the light irradiation scope further increase, two illumination adjusting unit 4 outwards rotate, reduce the collection of light, and light is scattered, and the scope is bigger, and the lightness reduces, and light is more dispersed, can meet with external environment light.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.