Waterproof outdoor advertising lamp box

Abstract

The invention discloses a waterproof outdoor advertising lamp box, and relates to the technical field of outdoor advertising lamp boxes, the waterproof outdoor advertising lamp box comprises a lamp box shell, mounting frames are welded and fixed to the upper ends of the front and back of the lamp box shell, double-thread transmission rods are mounted at the upper ends of the interiors of the mounting frames, and the double-thread transmission rods are connected with inner holes of the mounting frames through bearings; threaded sleeves are installed at the two ends of the double-thread transmission rod correspondingly, a first water baffle is installed on one side of the upper end face of the lamp box shell, a second water baffle is installed on the other side of the upper end face of the lamp box shell, and the second water baffle is stored in the first water baffle in the non-rainwater weather. The first water baffle and the second water baffle are laid on the upper portion of the lamp box shell, the first water baffle and the second water baffle are obliquely supported on the upper portion of the lamp box shell in rainy days, and the problem that water easily permeates into the lamp box from the upper portion of the lamp box in the rainy days due to aging of waterproof materials along with prolonging of service time of the outdoor advertising lamp box is solved.

Description

Technical Field

[0001] The invention relates to the technical field of outdoor advertising light boxes, in particular to a waterproof outdoor advertising light box. Background Art

[0002] Outdoor advertising light boxes are lighting display devices set up in outdoor public places, such as streets, squares, building facades, bus stops, etc., for displaying commercial advertisements, promotional information or public service content. They are usually made of metal, plastic and other materials, with lighting fixtures installed inside and the surface covered with transparent acrylic panels, light box cloth and other materials. Through the projection of light, the advertising content can be clearly seen at night or in a dimly lit environment, and has a strong visual appeal and information transmission effect.

[0003] For example, the Chinese authorized patent "An Outdoor Advertising Light Box" with announcement number CN222600455U includes an advertising light box body, a positioning plug block is provided in the middle of one side of the advertising light box body, a plug-in opening is provided in the middle of one side of the positioning plug block, a connecting block is plugged and installed inside the positioning plug block, a support plate is movably installed inside the connecting block, a fixed block is connected to one side of the support plate, and mounting holes are provided at the four corners of one side of the fixed block. Through the coordinated use of the connecting block, the support plate, the fixed block and the positioning plug block, the use angle of the advertising light box body can be adjusted when it is installed outdoors.

[0004] Although the above-mentioned existing technologies have a certain waterproof effect, most of them are achieved through their own waterproof materials. As the use time increases, the waterproof material itself will age, and the waterproof performance will also decrease, causing water to easily penetrate into the interior from the top of the light box in rainy weather, causing damage to internal components. Therefore, it does not meet existing needs. In this regard, we propose a waterproof outdoor advertising light box. Summary of the invention

[0005] The purpose of the present invention is to provide a waterproof outdoor advertising light box to solve the problem raised in the above background technology that as the outdoor advertising light box is used for a long time, the waterproof material ages, resulting in water easily seeping into the interior from the top of the light box in rainy weather.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waterproof outdoor advertising light box, comprising a light box shell, the front and rear upper ends of the light box shell are welded and fixed with a mounting frame, the upper end inside the mounting frame is installed with a double-threaded transmission rod, and the double-threaded transmission rod is connected to the inner hole of the mounting frame through a bearing, both ends of the double-threaded transmission rod are installed with a threaded sleeve, the double-threaded transmission rod extends to the inside of the threaded sleeve, and the double-threaded transmission rod is threadedly matched with the threaded sleeve, a first water baffle is installed on one side of the upper end surface of the light box shell, and a second water baffle is installed on the other side of the upper end surface of the light box shell, and the first water baffle and the second water baffle are respectively connected to one end of the inner side of the threaded sleeve through a rotating shaft, in non-rainy weather, the second water baffle is stored in the inside of the first water baffle, and the first water baffle and the second water baffle are laid flat on the top of the light box shell, and in rainy weather, the first water baffle and the second water baffle are tilted and supported above the light box shell.

[0007] Preferably, a storage groove is provided inside the first water baffle plate, and the second water baffle plate is plugged into and matched with the first water baffle plate through the storage groove, and connecting shafts are fixedly provided at the front and rear of one end of the second water baffle plate close to the first water baffle plate, and rotating shaft sliding grooves are provided on both sides of the storage groove, and the connecting shaft and the rotating shaft sliding grooves are slidably limited.

[0008] Preferably, an adjusting knob is rotatably mounted on the bottom of the mounting frame, and a bevel gear is fixedly mounted at one end of the adjusting knob located inside the mounting frame and at a middle position of the double-threaded transmission rod, and the two bevel gears are meshed and connected.

[0009] Preferably, an adjustment cavity is provided at the lower end of the side wall of the light box shell, a lifting frame is slidably installed inside the adjustment cavity, and the lifting frame extends to the bottom of the light box shell, a supporting base frame is welded and fixed to the bottom of the lifting frame, a servo motor is fixedly installed above the adjustment cavity, a stud is installed on the output shaft of the servo motor, the stud extends to the inside of the lifting frame, and the stud is threadedly connected to the lifting frame.

[0010] Preferably, a detection cavity is provided in the middle position of the bottom plate of the light box shell, a pressure sensor is fixedly installed at the upper end of the detection cavity, a detection rod is installed at the lower end of the detection cavity, the upper end of the detection rod is opposite to the detection position of the pressure sensor, and the detection rod and the detection cavity are limited by sliding, a buoyancy chamber is fixedly installed at the lower end of the detection rod, the output end of the pressure sensor is connected to the single-chip microcomputer, and the output end of the single-chip microcomputer is connected to the servo motor.

[0011] Preferably, a lamp panel mounting cavity is provided inside the light box shell, an air inlet is provided on one side inside the bottom plate of the light box shell, and the air inlet is communicated with the lamp panel mounting cavity, a heat dissipation duct is provided in the inner wall of one side of the light box shell, a negative pressure fan is installed at the middle position of the heat dissipation duct, a hot air inlet communicated with the lamp panel mounting cavity is provided on one side of the bottom of the heat dissipation duct, an exhaust cavity is provided inside the top plate of the light box shell, and the exhaust cavity is communicated with the heat dissipation duct, and a plurality of equally spaced hot air outlet holes are provided at the lower end of the exhaust cavity.

[0012] Preferably, a light guide plate is installed inside the lamp sheet installation cavity, and lamp sheets are installed on the front and rear end surfaces of the light box shell.

[0013] Preferably, a filter is installed inside the air inlet, and the filter is snap-connected to the air inlet.

[0014] Preferably, a solar photovoltaic panel is installed on the upper end surface of the first water baffle, a battery is installed on one side of the bottom of the lamp panel installation cavity, and the solar photovoltaic panel is electrically connected to the battery, and an inverter is installed on one side of the battery.

[0015] Preferably, the light box shell is made of aluminum alloy.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides two water baffles above the light box housing. Under normal conditions, the second water baffle is partially inserted into the storage groove of the first water baffle, and the two are horizontally placed above the light box housing, which reduces the extra space occupied and does not cause any obstruction to the advertising light box when viewed from a bird's-eye view, ensuring the integrity and unobstructedness of the advertising display, so that the light box can fully exert its advertising function in non-rainy weather; through the uniquely designed two water baffles, in rainy weather, they can be flexibly adjusted to a state with an inclined angle. This inclined structure can not only effectively block rainwater, but also use the drainage effect of the inclined surface to quickly drain rainwater, greatly avoiding the accumulation of rainwater on the top of the light box housing, thereby significantly reducing the risk of rainwater infiltrating into the interior of the light box, effectively ensuring the safety of internal components, solving the problem of rainwater easily infiltrating into the interior from the top of the light box, and greatly reducing the possibility of internal components being damaged by water ingress. This not only extends the service life of the internal components of the advertising light box and reduces equipment maintenance costs, but also ensures the stable operation of the advertising light box, ensures that advertisements can be displayed continuously and normally, and improves the effectiveness and stability of advertising.

[0018] 2. The support chassis of the present invention can automatically adjust the height according to the water accumulation on the road surface, which is extremely practical in the scenario where the urban drainage system is heavily loaded and prone to waterlogging during heavy rain. The buoyancy chamber works in conjunction with the pressure sensor, single-chip microcomputer and servo motor. Once the surface of the accumulated water contacts the buoyancy chamber at the lower end of the light box shell, the system starts to operate. By automatically raising the height of the light box shell, the bottom of the light box can be prevented from being directly immersed in the accumulated water, and the internal electronic components can be prevented from being damaged by the backflow of accumulated water, which further improves the safety and stability of the light box in bad weather. In bad weather such as heavy rain, the staff is often busy dealing with various emergencies and it is difficult to pay attention to and deal with each outdoor advertising light box in a timely manner. This automatic adjustment function can effectively reduce the labor burden and reduce labor costs. At the same time, it ensures that the light box can respond to the threat of accumulated water in a timely manner without human intervention, maintain normal working conditions, avoid the bottom of the light box from being in contact with accumulated water for a long time, and reduce the risk of corrosion and rust of the light box shell due to accumulated water. It also protects the support chassis and related connecting parts. This not only helps maintain the visual integrity of the light box, but also extends the life of the light box overall, reducing the need for replacement and repair work due to premature equipment failure.

[0019] 3. The present invention installs a heat dissipation duct in the side wall of the light box housing. When the advertising light box is in operation, a large amount of heat is generated inside. The negative pressure fan works in conjunction with the heat dissipation duct to quickly discharge the heat inside the lamp installation cavity. The continuous heat dissipation process can prevent the performance of internal components from being degraded or damaged due to high temperature, extend the service life of the components, ensure that the light box can operate stably for a long time, reduce the frequency of failures caused by overheating, and ensure that the advertising display is not affected by the heat dissipation problem of the equipment. The hot air discharged from the heat dissipation duct can contact the surface of the lamp through the hot air outlet at the bottom of the exhaust cavity. In rainy weather or humid environments, the residual moisture on the surface of the lamp can be blown dry in time to prevent the lamp from fading, deformation, etc. due to moisture, always keeping the advertising picture clear and colorful, improving the display effect of the advertisement, ensuring that the advertising information is accurately conveyed to the audience, and enhancing the attractiveness and influence of the advertisement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall stereogram of the present invention;

[0021] Figure 2 It is an overall stereogram of the present invention in a rainproof state;

[0022] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A area;

[0023] Figure 4 A top view of the present invention;

[0024] Figure 5 For the present invention Figure 4Middle AA section;

[0025] Figure 6 It is a schematic diagram of the hot air drying structure of the present invention.

[0026] In the figure: 1. light box shell; 2. light piece; 3. mounting frame; 4. double-threaded transmission rod; 5. first water baffle; 6. second water baffle; 7. threaded sleeve; 8. adjusting knob; 9. lifting frame; 10. supporting frame; 11. buoyancy chamber; 12. detection rod; 13. storage slot; 14. shaft sliding slot; 15. connecting shaft; 16. light guide plate; 17. adjustment cavity; 18. servo motor; 19. stud; 20. detection cavity; 21. pressure sensor; 22. air inlet; 23. filter; 24. heat dissipation duct; 25. hot air inlet; 26. light piece mounting cavity; 27. exhaust cavity; 28. hot air outlet; 29. ​​solar photovoltaic panel; 30. battery; 31. inverter; 32. negative pressure fan. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] See also Figure 1-6 , an embodiment of the present invention: a waterproof outdoor advertising light box, comprising a light box shell 1, a mounting frame 3 is welded and fixed to the upper ends of the front and rear ends of the light box shell 1, a double-threaded transmission rod 4 is installed at the upper end of the mounting frame 3, and the double-threaded transmission rod 4 is connected to the inner hole of the mounting frame 3 through a bearing, threaded sleeves 7 are installed at both ends of the double-threaded transmission rod 4, the double-threaded transmission rod 4 extends to the inside of the threaded sleeve 7, and the double-threaded transmission rod 4 is threadedly matched with the threaded sleeve 7, a first water baffle 5 is installed on one side of the upper end surface of the light box shell 1, a second water baffle 6 is installed on the other side of the upper end surface of the light box shell 1, and the first water baffle 5 and the second water baffle 6 are respectively connected to one end of the inner side of the threaded sleeve 7 through a rotating shaft, the second water baffle 6 is stored in the first water baffle 5 in non-rainy weather, and the first water baffle 5 and the second water baffle 6 are laid flat on the top of the light box shell 1, and the first water baffle 5 and the second water baffle 6 are tilted and supported on the top of the light box shell 1 in rainy weather;

[0029] The design of the light box can flexibly adjust the state of the water retaining plate according to weather conditions. On sunny or rainless days, the water retaining plate is placed horizontally and does not affect the normal use of the light box. In rainy weather, it can be quickly adjusted to an effective waterproof state, showing good adaptability and meeting the use needs of outdoor advertising light boxes in complex and changeable weather environments. The inclined structure can not only effectively block rain, but also use the drainage effect of the slope to quickly drain rainwater, thereby greatly avoiding the accumulation of rainwater on the top of the light box shell, thereby significantly reducing the risk of rainwater seeping into the light box.

[0030] See also Figure 1 , Figure 2 and Figure 3 The first water baffle plate 5 is provided with a storage groove 13 inside, and the second water baffle plate 6 is plugged and matched with the first water baffle plate 5 through the storage groove 13. The second water baffle plate 6 is fixedly provided with a connecting shaft 15 near the front and rear of one end of the first water baffle plate 5. The two sides of the storage groove 13 are provided with a rotating shaft sliding groove 14, and the connecting shaft 15 and the rotating shaft sliding groove 14 are slidably limited. An adjusting knob 8 is rotatably installed at the bottom of the mounting frame 3. The adjusting knob 8 is located at one end of the mounting frame 3 and the middle position of the double-threaded transmission rod 4. A bevel gear is fixedly provided, and the two bevel gears are meshed and connected. Under normal conditions, the second water baffle plate 6 is partially plugged into the storage groove 13 of the first water baffle plate 5, and the two are horizontally placed above the light box housing 1, which reduces the additional space occupation and does not cause any obstruction to the advertising light box at a top-down angle, ensuring the integrity and unobstructedness of the advertising display, so that the light box can give full play to its advertising function in non-rainy weather.

[0031] See also Figure 1 and Figure 4 , an adjusting cavity 17 is provided at the lower end of the side wall of the light box shell 1, a lifting frame 9 is slidably installed inside the adjusting cavity 17, and the lifting frame 9 extends to the bottom of the light box shell 1, a supporting frame 10 is welded and fixed at the bottom of the lifting frame 9, a servo motor 18 is fixedly installed above the adjusting cavity 17, a stud 19 is installed on the output shaft of the servo motor 18, the stud 19 extends to the inside of the lifting frame 9, and the stud 19 is threadedly connected to the lifting frame 9, a detection cavity 20 is provided at the middle position of the bottom plate of the light box shell 1, a pressure sensor 21 is fixedly installed at the upper end of the detection cavity 20, a detection rod 12 is installed at the lower end of the detection cavity 20, the upper end of the detection rod 12 is directly opposite to the detection position of the pressure sensor 21, and the detection rod 12 and the detection cavity 20 are slidably limited, a buoyancy chamber 11 is fixedly installed at the lower end of the detection rod 12, the output end of the pressure sensor 21 is connected to the single-chip microcomputer, and the output end of the single-chip microcomputer is connected to the servo motor 18;

[0032] The buoyancy chamber 11 works in conjunction with the pressure sensor 21, the single chip microcomputer and the servo motor 18. Once the water surface contacts the buoyancy chamber at the lower end of the light box housing, the system starts to operate. By automatically raising the height of the light box housing 1, the bottom of the light box can be prevented from being directly immersed in the water, and the internal electronic components can be prevented from being damaged by the backflow of water, further improving the safety and stability of the light box in bad weather.

[0033] See also Figure 5 A lamp installation cavity 26 is provided inside the lamp box shell 1, an air inlet 22 is provided on one side of the bottom plate of the lamp box shell 1, and the air inlet 22 is communicated with the lamp installation cavity 26, a heat dissipation duct 24 is provided in the inner wall of one side of the lamp box shell 1, a negative pressure fan 32 is installed at the middle position of the heat dissipation duct 24, a hot air inlet 25 communicated with the lamp installation cavity 26 is provided on one side of the bottom of the heat dissipation duct 24, an exhaust cavity 27 is provided inside the top plate of the lamp box shell 1, and the exhaust cavity 27 is communicated with the heat dissipation duct 24, a plurality of hot air outlet holes 28 equidistantly distributed are provided at the lower end of the exhaust cavity 27, a light guide plate 16 is installed inside the lamp installation cavity 26, and lamps 2 are installed on the front and rear end surfaces of the lamp box shell 1;

[0034] The advertising light box generates a lot of heat when it is running. The negative pressure fan 32 works with the heat dissipation duct 24 and other devices to quickly discharge the heat inside the light piece installation cavity 26. The continuous heat dissipation process can prevent the performance degradation or damage of the internal components due to high temperature, extend the service life of the components, ensure that the light box can operate stably for a long time, reduce the frequency of failures caused by overheating, and ensure that the advertising display is not disturbed by the heat dissipation problem of the equipment. The hot air discharged from the heat dissipation duct 24 can contact the surface of the light piece 2 through the hot air outlet 28 at the bottom of the exhaust cavity 27. In rainy weather or humid environment, the residual moisture on the surface of the light piece can be blown dry in time to prevent the light piece from fading, deformation, etc. due to moisture.

[0035] See also Figure 5 A filter 23 is installed inside the air inlet 22, and the filter 23 is connected to the air inlet 22. The external air is filtered by the filter 23 and enters the lamp installation cavity 26, which not only takes away the heat, but also purifies the air inside the light box. The filter 23 can prevent dust, impurities, etc. from entering, reduce their erosion of internal components, further maintain the normal operating environment of the internal components, improve the overall dust and pollution prevention capabilities of the light box, extend the cleaning and maintenance cycle of the equipment, and reduce maintenance costs.

[0036] See also Figure 1 and Figure 5A solar photovoltaic panel 29 is installed on the upper end surface of the first water retaining plate 5, a battery 30 is installed on one side of the bottom of the lamp installation cavity 26, and the solar photovoltaic panel 29 is electrically connected to the battery 30, and an inverter 31 is installed on one side of the battery 30. The solar photovoltaic panel 29 can convert solar energy into electrical energy to provide power for the water accumulation detection mechanism and the heat dissipation and drying mechanism, which not only reduces the dependence on traditional power grid electricity, but also reduces energy consumption and operating costs. By being electrically connected to the battery, the solar photovoltaic panel stores excess electrical energy in the battery. At night or on cloudy days when there is insufficient solar energy, the battery can power the light box to ensure the normal operation of the water accumulation detection mechanism and the heat dissipation and drying mechanism.

[0037] Working principle: Under normal conditions, part of the second water baffle 6 is inserted into the storage groove 13 of the first water baffle 5, and the two are placed horizontally above the light box housing 1. At this time, this placement method reduces the extra space occupied and avoids blocking the advertising light box from a bird's-eye view. In rainy weather, the user turns the adjustment knob 8, and the adjustment knob 8 drives the helical gear that matches it to rotate, and the helical gear then drives the double-threaded transmission rod 4 to rotate. The external thread of the double-threaded transmission rod 4 and the threaded sleeve 7 rub against each other, converting the rotational motion into linear motion, so that the first water baffle 5 and the second water baffle 6 are separated synchronously until the connecting shafts 15 at both ends of the second water baffle 6 move to the outside of the rotating shaft sliding groove 14. At this time, the user provides an upward force at the connection between the first water baffle 5 and the second water baffle 6, so that the first water baffle 5 and the second water baffle 6 maintain a certain angle. Then, the adjusting knob 8 is reversed again, and the threaded sleeves 7 on both sides approach at the same speed. Since the first water baffle plate 5 and the second water baffle plate 6 maintain an inclined angle, the second water baffle plate 6 cannot enter the receiving groove 13 of the first water baffle plate 5. As the threaded sleeve 7 gradually approaches, the inclination angles of the first water baffle plate 5 and the second water baffle plate 6 are continuously increased. At this time, the two water baffle plates can not only block the rainwater, but also quickly discharge the rainwater through the inclined surface to avoid the accumulation of rainwater on the top of the light box housing 1.

[0038] In heavy rain, when the urban drainage system is overloaded and the streets are flooded, if the surface of the accumulated water contacts the buoyancy chamber 11 at the lower end of the light box housing 1, the buoyancy chamber 11 will be supported by the water. As the surface of the accumulated water rises, the buoyancy chamber 11 moves upward. When the detection rod 12 at the upper end of the buoyancy chamber 11 contacts the pressure sensor 21 in the detection chamber 20, it indicates that the accumulated water is close to the bottom of the light box housing 1. At this time, the servo motor 18 is turned on by the single-chip microcomputer, and the output shaft of the servo motor 18 drives the stud 19 to rotate. The external thread of the stud 19 rubs against the screw hole in the lifting frame 9. At the same time, the adjustment chamber 17 guides the lifting frame 9, so that the lifting frame 9 drives the supporting frame 10 to extend outward, thereby achieving the height increase of the light box housing 1 and preventing the bottom of the light box from being soaked by accumulated water.

[0039] During the use of the advertising light box, the components inside the light piece installation cavity 26 will generate a lot of heat. At this time, the negative pressure fan 32 is turned on, and the negative pressure fan 32 can send the heat inside the light piece installation cavity 26 into the heat dissipation duct 24 through the hot air inlet 25. At the same time, the external air is filtered by the filter 23 and sent into the light piece installation cavity 26 through the air inlet 22, thereby effectively dissipating the heat of the internal components. The hot air enters the exhaust cavity 27 through the heat dissipation duct 24. The bottom of the exhaust cavity 27 is provided with a plurality of hot air outlet holes 28. The hot air discharged from the hot air outlet holes 28 can contact the position of the light piece 2, dry the residual moisture on the surface of the light piece 2, and keep the light piece 2 dry.

[0040] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A waterproof outdoor advertising light box, comprising a light box housing (1), characterized in that: The upper ends of the front and rear ends of the light box housing (1) are both welded and fixed with a mounting frame (3), the upper end of the interior of the mounting frame (3) is mounted with a double-threaded transmission rod (4), and the double-threaded transmission rod (4) is connected to the inner hole of the mounting frame (3) through a bearing, both ends of the double-threaded transmission rod (4) are mounted with a threaded sleeve (7), the double-threaded transmission rod (4) extends to the interior of the threaded sleeve (7), and the double-threaded transmission rod (4) and the threaded sleeve (7) are threadedly matched, and a first stop is mounted on one side of the upper end surface of the light box housing (1). A water baffle (5) is installed on the other side of the upper end surface of the light box housing (1), and the first water baffle (5) and the second water baffle (6) are respectively connected to one end of the inner side of the threaded sleeve (7) through a rotating shaft. In non-rainy weather, the second water baffle (6) is stored inside the first water baffle (5), and the first water baffle (5) and the second water baffle (6) are laid flat on the top of the light box housing (1). In rainy weather, the first water baffle (5) and the second water baffle (6) are tilted and supported on the top of the light box housing (1).

2. A waterproof outdoor advertising light box according to claim 1, characterized in that: The first water baffle plate (5) is provided with a receiving groove (13) inside, and the second water baffle plate (6) is plugged and matched with the first water baffle plate (5) through the receiving groove (13); the second water baffle plate (6) is fixedly provided with a connecting shaft (15) at the front and rear of one end close to the first water baffle plate (5); rotating shaft sliding grooves (14) are provided on both sides of the receiving groove (13), and the connecting shaft (15) and the rotating shaft sliding groove (14) are slidably limited.

3. A waterproof outdoor advertising light box according to claim 2, characterized in that: An adjusting knob (8) is rotatably mounted at the bottom of the mounting frame (3), and a helical gear is fixedly mounted at one end of the adjusting knob (8) located inside the mounting frame (3) and at the middle position of the double-threaded transmission rod (4), and the two helical gears are meshed and connected.

4. A waterproof outdoor advertising light box according to claim 1, characterized in that: The lower end of the side wall of the light box shell (1) is provided with an adjustment cavity (17), a lifting frame (9) is slidably installed inside the adjustment cavity (17), and the lifting frame (9) extends to the bottom of the light box shell (1), a supporting base frame (10) is welded and fixed to the bottom of the lifting frame (9), a servo motor (18) is fixedly installed above the adjustment cavity (17), the output shaft of the servo motor (18) is installed with a stud (19), the stud (19) extends to the inside of the lifting frame (9), and the stud (19) is threadedly connected to the lifting frame (9).

5. A waterproof outdoor advertising light box according to claim 4, characterized in that: A detection cavity (20) is arranged at the middle position of the bottom plate of the light box housing (1); a pressure sensor (21) is fixedly mounted at the upper end of the detection cavity (20); a detection rod (12) is mounted at the lower end of the detection cavity (20); the upper end of the detection rod (12) faces the detection position of the pressure sensor (21), and the detection rod (12) and the detection cavity (20) are slidably limited; a buoyancy chamber (11) is fixedly mounted at the lower end of the detection rod (12); the output end of the pressure sensor (21) is connected to a single-chip microcomputer, and the output end of the single-chip microcomputer is connected to a servo motor (18).

6. The waterproof outdoor advertising light box according to claim 1, characterized in that: A lamp panel mounting cavity (26) is arranged inside the light box shell (1); an air inlet (22) is arranged on one side of the bottom plate of the light box shell (1), and the air inlet (22) is communicated with the lamp panel mounting cavity (26); a heat dissipation duct (24) is arranged in the inner wall of one side of the light box shell (1); a negative pressure fan (32) is installed at the middle position of the heat dissipation duct (24); a hot air inlet (25) communicated with the lamp panel mounting cavity (26) is arranged on one side of the bottom of the heat dissipation duct (24); an exhaust cavity (27) is arranged inside the top plate of the light box shell (1), and the exhaust cavity (27) is communicated with the heat dissipation duct (24); a plurality of hot air outlet holes (28) distributed equidistantly are arranged at the lower end of the exhaust cavity (27).

7. A waterproof outdoor advertising light box according to claim 6, characterized in that: A light guide plate (16) is installed inside the lamp sheet installation cavity (26), and lamp sheets (2) are installed on the front and rear end surfaces of the lamp box housing (1).

8. The waterproof outdoor advertising light box according to claim 6, characterized in that: A filter screen (23) is installed inside the air inlet (22), and the filter screen (23) is snap-connected to the air inlet (22).

9. The waterproof outdoor advertising light box according to claim 6, characterized in that: A solar photovoltaic panel (29) is installed on the upper end surface of the first water baffle (5), a storage battery (30) is installed on one side of the bottom of the lamp panel installation cavity (26), and the solar photovoltaic panel (29) is electrically connected to the storage battery (30), and an inverter (31) is installed on one side of the storage battery (30).

10. The waterproof outdoor advertising light box according to claim 1, characterized in that: The light box shell (1) is made of aluminum alloy.

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