Water immersion power-off structure of outdoor traffic signal controller

Abstract

The application relates to the technical field of control machines, and discloses a water immersion power-off structure of an outdoor traffic signal control machine, which comprises two side vertical frames, the two side vertical frames are symmetrically arranged, the side vertical frame is a box with an open side, and the bottom surface of the side vertical frame is fixedly connected with a mounting base; a control machine main body is arranged between the two side vertical frames and is slidably arranged on the side wall of the side vertical frame, and the control machine main body is arranged above the mounting base; a lifting assembly is arranged in the side vertical frame; a pressure detection assembly is fixedly connected with the outer wall of the control machine, and the pressure detection assembly is matched with the lifting assembly; and a water immersion detection assembly is fixedly installed on the outer wall of any side vertical frame. The application has the advantages of compact structure, rapid response, high reliability, prolonged service life of the equipment, reduced maintenance cost and ensured continuous and stable operation of the urban traffic signal system.

Description

Technical Field

[0001] This invention relates to the field of control machine technology, and in particular to a water immersion power-off structure for an outdoor traffic signal control machine. Background Technology

[0002] Outdoor traffic signal controllers are core execution devices in urban intelligent traffic management systems, widely deployed in outdoor public areas such as road intersections, construction zones, and transportation hubs. Their operational stability directly impacts road traffic order and public safety. Due to prolonged exposure to the natural environment, these devices inevitably face various water immersion risks, including heavy rainfall, urban flooding, municipal pipeline leaks, and water truck operations. When water seeps into the controller's enclosure, it can easily cause serious accidents such as short circuits in electrical components, motherboard burnout, and power module failure. This not only results in high equipment repair and replacement costs but can also lead to a complete paralysis of the traffic signal system, causing widespread traffic congestion and even triggering traffic accidents, posing significant inconvenience and safety hazards to urban management and public travel. Therefore, developing highly reliable water immersion detection and automatic power-off protection structures has become a key technical requirement for ensuring the safe operation of outdoor traffic signal controllers.

[0003] Several water immersion power-off protection devices for outdoor traffic signal controllers have emerged on the market, with a typical example being the technical solution disclosed in Chinese patent CN219041381U. This device, through a linkage mechanism of a float, gravity plate, and connecting rod, can automatically disconnect the main power supply inside the controller when the water level reaches a preset warning line. However, this device uses a detection method where the float floats vertically within a narrow water tank. The gap between the float and the tank wall is extremely small, making it highly susceptible to blockage due to factors such as sediment deposition, algae growth, oil adhesion, or freezing in winter, causing the float to fail to detect water immersion and resulting in a serious safety hazard of "not disconnecting when it should." Furthermore, this device has a limited function, only providing water immersion power-off protection and unable to react to continuously rising water levels. When the water depth exceeds the sealing height of the bottom of the controller, it can still cause corrosion and damage to the precision electronic components inside the controller, making equipment repair difficult and time-consuming, severely affecting the continuous operation of the traffic signal system.

[0004] To address this, a water immersion power-off structure for outdoor traffic signal controllers is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a water immersion power-off structure for an outdoor traffic signal controller, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a water immersion power-off structure for an outdoor traffic signal controller, comprising... Side frame, two side frames are provided, the two side frames are arranged symmetrically, the side frame is a box with an opening on the side, and the bottom surface of the side frame is fixedly connected to a mounting base; The control unit body is located between the two side frames and is slidably disposed with respect to the side wall of the side frames. The control unit body is located above the mounting base. A lifting assembly, located within the side frame, is used to adjust the height of the main body of the control unit; A pressure detection component is fixedly connected to the outer wall of the control unit and is adapted to the lifting component; A water immersion detection component is fixedly installed on the outer wall of any of the side frames, and the water immersion detection component is used to detect the water immersion status of the main body of the control unit.

[0007] Preferably, the lifting assembly includes a threaded transmission rod rotatably disposed within the side frame. The threaded transmission rod is vertically disposed. A servo motor is fixedly connected to the inner wall of the top side of the side frame. The output shaft of the servo motor is fixedly connected to the top end of the threaded transmission rod. An internal threaded lifting plate is installed inside the side frame. The threaded transmission rod passes through the internal threaded lifting plate and is threadedly engaged with the internal threaded lifting plate.

[0008] Preferably, the pressure detection assembly includes a side-bent plate fixedly connected to the outer wall of the main body of the control unit, a strip plate slidably connected to the bottom of the side-bent plate, a thin-film pressure sensor fixedly installed on the bottom wall of the bend of the side-bent plate, a plurality of return springs fixedly connected between the thin-film pressure sensor and the top wall of the strip plate, and a notch bearing groove is opened on the side of the top surface of the inner screw lifting plate, with the bottom end of the strip plate located in the notch bearing groove.

[0009] Preferably, the water immersion detection component includes a stainless steel V-shaped groove fixedly connected to the outer wall of the side frame. The stainless steel V-shaped groove is inclined, and a T-shaped stainless steel slide rail is provided on the inner wall of the stainless steel V-shaped groove. The T-shaped stainless steel slide rail is filled with a heating wire, and a guide boss is slidably connected in the T-shaped stainless steel slide rail. A slider body is fixedly connected between two guide bosses. A float body is provided through the middle of the slider body. A sealed air cavity is provided at the upper end of the float body. A neodymium iron boron permanent magnet is embedded in the float body. A tungsten steel counterweight is located at the lower part of the float body. A reed switch and a Hall sensor are installed in the stainless steel V-shaped groove.

[0010] Preferably, the inner screw lifting plate is equipped with a plurality of one-way wheels on its side wall, and the one-way wheels are arranged in contact with the inner wall of the side frame.

[0011] Preferably, the main body of the control unit is equipped with a PLC controller capable of cutting off the power supply to the main body of the control unit. The PLC controller is electrically connected to the heating wire, the thin film pressure sensor, the reed switch, the Hall sensor and the servo motor respectively. The main body of the control unit is equipped with a backup power supply, which is electrically connected to the PLC controller.

[0012] Preferably, the top surface of the stainless steel V-shaped groove is a three-color transparent cover plate, which is green, yellow and red from bottom to top. A drainage hole is provided at the lower end of the stainless steel V-shaped groove, and an anti-detachment baffle is installed at the end of the stainless steel V-shaped groove.

[0013] Preferably, a first warning light is installed on the side frame, and a second warning light is installed on the main body of the control unit. The first warning light and the second warning light are electrically connected to the PLC controller respectively.

[0014] The present invention discloses the following technical effects: Upon receiving a water immersion signal, the PLC controller immediately cuts off the main circuit of the control unit. Simultaneously, a backup power supply drives the servo motor and threaded transmission mechanism to smoothly raise the main body of the control unit to a preset safe height, fundamentally preventing corrosion damage to internal precision electronic components from water immersion. The linkage design of the side bending plate and the thin-film pressure sensor further confirms and maintains the power-off state during the lifting process, forming a double power-off guarantee. The traditional vertical floating detection is replaced with an inclined slide rail linkage structure. The float body slides along the T-shaped stainless steel slide rail, and mud, sand, and impurities in the water naturally settle at the bottom of the V-shaped groove and are promptly discharged through the drainage holes, completely eliminating the risk of float block jamming caused by impurity deposition, algae growth, and oil adhesion. This invention has a compact structure, rapid response, and high reliability, effectively extending the service life of the equipment, reducing maintenance costs, and ensuring the continuous and stable operation of the urban traffic signal system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the water immersion power-off structure of the present invention; Figure 2 This is a schematic diagram of the side frame structure of the present invention; Figure 3 This is a schematic diagram of the main body of the controller of the present invention; Figure 4 This is a schematic diagram of the bending plate structure of the present invention; Figure 5 This is a schematic diagram of the three-color transparent cover plate structure of the present invention; Figure 6 This is a schematic diagram of the stainless steel V-groove structure of the present invention; Figure 7 This is a schematic diagram of the slider body and the T-shaped stainless steel slide rail of the present invention. Figure 8 This is a schematic diagram of the float body structure of the present invention; The components include: 1. Mounting base; 2. Side frame; 3. Easy-to-maintain side plate; 4. Servo motor; 5. Threaded drive rod; 6. Internal thread lifting plate; 7. One-way wheel; 8. Notched bearing groove; 9. First warning light; 10. Control unit body; 11. Second warning light; 12. Mounting inner groove; 13. Backup power supply; 14. PLC controller; 15. Side bending plate; 16. Strip plate; 17. Return spring; 18. Thin-film pressure sensor; 19. Rubber frame; 20. Stainless steel V-groove; 21. Three-color transparent cover plate; 22. T-shaped stainless steel slide rail; 23. Heating wire; 24. Drainage hole; 25. Guide boss; 26. Slider body; 27. Float body; 28. Sealed air cavity; 29. ​​Neodymium iron boron permanent magnet; 30. Tungsten steel counterweight; 31. Reed switch; 32. Hall sensor; 33. Anti-detachment baffle. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Reference Figures 1-8 This invention provides a water immersion power-off structure for an outdoor traffic signal controller, including... Side frame 2, there are two side frames 2, the two side frames 2 are arranged symmetrically, the side frame 2 is a box with an opening on the side, and the bottom surface of the side frame 2 is fixedly connected to the mounting base 1; The main body of the control unit 10 is located between two side frames 2 and is slidably disposed with the side wall of the side frames 2. The main body of the control unit 10 is located above the mounting base 1. The lifting assembly is located inside the side frame 2 and is used to adjust the height of the main body 10 of the control unit. The pressure detection component is fixedly connected to the outer wall of the control unit and is compatible with the lifting component. A water immersion detection component is fixedly installed on the outer wall of the frame 2 on either side. The water immersion detection component is used to detect the water immersion status of the main body 10 of the control unit.

[0020] The scheme is further optimized. The lifting component includes a threaded transmission rod 5 that is rotatably installed in the side frame 2. The threaded transmission rod 5 is vertically installed. A servo motor 4 is fixedly connected to the inner wall of the top side of the side frame 2. The output shaft of the servo motor 4 is fixedly connected to the top of the threaded transmission rod 5. An internal threaded lifting plate 6 is installed in the side frame 2. The threaded transmission rod 5 passes through the internal threaded lifting plate 6 and is threadedly engaged with the internal threaded lifting plate 6.

[0021] Bearing seats are bolted to the lower ends of the two side frames 2. The lower end of the threaded drive rod 5 is installed inside the inner ring of the bearing seat. The bearing seat is used to ensure the stable rotation and accurate alignment of the threaded drive rod 5, and to reduce off-center load and vibration. The two longitudinally mounted side frames 2 constitute the main frame and guide rail of the equipment, which are used to accommodate and guide the lifting mechanism.

[0022] Furthermore, both the front and rear ends of the two internal thread lifting plates 6 are provided with wheel grooves, and multiple one-way wheels 7 are installed in multiple wheel grooves. The multiple one-way wheels 7 slide against the front and rear ends of the inner walls of the two side upright frames 2 respectively. The one-way wheels 7 installed at the front and rear ends of the internal thread lifting plates 6 are in sliding contact with the inner walls of the side upright frames 2. Its function is to convert the rotational tendency generated by the threaded transmission into a purely vertical guiding motion, greatly reducing the sliding friction between the internal thread lifting plates 6 and the inner walls of the side upright frames 2, ensuring a smooth and stable lifting process, and preventing jamming.

[0023] To further optimize the design, the pressure detection component includes a side-bent plate 15 fixedly connected to the outer wall of the main body 10 of the control unit. A strip-shaped support plate 16 is slidably connected to the bottom of the side-bent plate 15. A thin-film pressure sensor 18 is fixedly installed on the bottom wall of the bend of the side-bent plate. Several return springs 17 are fixedly connected between the thin-film pressure sensor 18 and the top wall of the strip-shaped support plate 16. A notch bearing groove 8 is opened on the side of the top surface of the inner screw lifting plate 6, and the bottom end of the strip-shaped support plate 16 is located in the notch bearing groove 8. The added strip-shaped support plate 16 extends downward from the side-bent plate 15, and its end rests in the notch bearing groove 8 of the inner screw lifting plate 6. This design allows the weight of the main body 10 of the control unit to be transferred to the inner screw lifting plate 6 through the side bending plate 15 and the strip plate 16. The inner screw lifting plate 6 is driven to lift by the servo motor 4, thereby realizing a separable load-bearing connection between the main body 10 of the control unit and the lifting mechanism, which is convenient for installation and maintenance. According to the reciprocity of forces, the pressure can be transferred to the diaphragm pressure sensor 18 through the return spring 17 during the lifting process, so that the diaphragm pressure sensor 18 can transmit the pressure lifting information to the PLC controller 14, thereby enabling the PLC controller 14 to force the internal circuit of the main body 10 of the control unit to be de-energized.

[0024] Furthermore, the side bending plate 15 is embedded with a rubber frame 19, and the thin film pressure sensor 18 is located inside the rubber frame 19.

[0025] The scheme is further optimized. The water immersion detection component includes a stainless steel V-shaped groove 20 fixedly connected to the outer wall of the side frame 2. The stainless steel V-shaped groove 20 is inclined. A T-shaped stainless steel slide rail 22 is opened on the inner wall of the stainless steel V-shaped groove 20. The T-shaped stainless steel slide rail 22 is filled with a heating wire 23, which is a low-power PTC heating wire 23. A guide boss 25 is slidably connected in the T-shaped stainless steel slide rail 22. A slider body 26 is fixedly connected between the two guide bosses 25. A float body 27 is installed through the middle of the slider body 26. A sealed air cavity 28 is opened at the upper end of the float body 27. A neodymium iron boron permanent magnet 29 is embedded in the float body 27. A tungsten steel counterweight 30 is located at the lower part of the float body 27. A reed switch 31 and a Hall sensor 32 are installed in the stainless steel V-shaped groove.

[0026] Further optimization of the design: a cover is provided on the rear side of the upper end of the stainless steel V-shaped groove 20. The main function of the added cover is to prevent rainwater, dust or foreign objects from falling directly into the V-shaped groove from above, interfering with the normal movement of the float, while maintaining the relative cleanliness of the detection chamber.

[0027] Furthermore, a maintenance side plate 3 is longitudinally installed on the outer side of the side frame 2 by bolts, and a stainless steel V-shaped groove 20 is inclinedly embedded in the end face of the maintenance side plate 3.

[0028] The design was further optimized by installing several one-way wheels 7 on the side wall of the inner screw lifting plate 6, with the one-way wheels 7 in contact with the inner wall of the side frame 2.

[0029] Further optimization of the scheme: an inner mounting groove 12 is provided at the upper part of the main body 10 of the control unit. A PLC controller 14 capable of cutting off the power supply of the main body 10 of the control unit is installed in the inner mounting groove 12. The PLC controller 14 is electrically connected to the heating wire 23, the thin film pressure sensor 18, the reed switch 31, the Hall sensor 32 and the servo motor 4 respectively. A backup power supply 13 is installed in the main body 10 of the control unit, and the backup power supply 13 is electrically connected to the PLC controller 14.

[0030] Furthermore, the first warning light 9, the second warning light 11, the two thin-film pressure sensors 18, the two servo motors 4, the backup power supply 13, the PLC controller 14, the two low-power PTC heating wires 23, the reed switch 31, and the Hall sensor 32 are connected by wires. The PLC controller 14 is connected to the internal circuitry of the main control unit 10. This connection system constitutes the intelligent control and response network of the entire device. The PLC controller 14, as the core, receives input signals from the thin-film pressure sensors 18, the reed switch 31, and the Hall sensor 32, and controls the servo motors 4, the first warning light 9, the second warning light 11, the heating wires 23, and other actuators. The backup power supply 13 provides emergency power to the entire protection system, including the PLC, sensors, and motors, after the main power supply is disconnected due to water immersion, ensuring reliable execution of protection actions.

[0031] The design is further optimized by using a three-color transparent cover 21 on the top surface of the stainless steel V-shaped trough 20. The three colors of the cover 21, from bottom to top, are green, yellow, and red. A drainage hole 24 is provided at the lower end of the stainless steel V-shaped trough 20, and an anti-detachment baffle 33 is installed at the end of the trough 20. The colors of the three-color transparent cover 21, from bottom to top, are green, yellow, and red, corresponding to the stroke position of the float body 27 within the stainless steel V-shaped trough 20. The float position can be visually observed through the three-color transparent cover 21: green at the bottom (normal), yellow in the middle (water level warning / triggered), and red at the top (high level alarm / equipment raised). This provides a clear and intuitive local status indication without needing to open the cover.

[0032] The drainage hole 24, located at the lower front end of the stainless steel V-shaped tank 20, is used to drain residual water from the tank when the accumulated water recedes, ensuring that the float can be smoothly reset. The anti-detachment baffle 33, fastened at the front opening, is used to prevent the float assembly from detaching from the front end of the slide rail under accidental impact or high-speed water flow, serving as a mechanical limit and safety protection function.

[0033] The scheme is further optimized by installing a first warning light 9 on the side frame 2 and a second warning light 11 on the main body of the control unit 10. The first warning light 9 and the second warning light 11 are electrically connected to the PLC controller 14 respectively.

[0034] The working process of this invention: The float body 27 slides along the T-shaped stainless steel slide rail 22 within the inclined stainless steel V-shaped trough 20. The sealed air chamber 28 at the upper part provides buoyancy, while the tungsten carbide counterweight 30 at the lower part ensures a low center of gravity and stable posture. As the water level rises, buoyancy overcomes the component of gravity and friction, driving the float to slide up the inclined surface. The movement trajectory is strictly constrained by the slide rail, and impurities are deposited at the bottom of the trough or discharged through the drainage holes 24, thus preventing jamming. The neodymium iron boron permanent magnet 29 inside the float moves upward, triggering the reed switch 31 or Hall sensor 32 fixed at the upper end of the trough, emitting an electrical signal.

[0035] When there is no water, the float stops at the bottom of the V-shaped groove under the action of the counterweight, the magnet is away from the sensor, and the float body 27 is in the green part of the three-color transparent cover 21. When water enters, external water enters the V-shaped groove through the gap. When the water level reaches the critical value, the float body 27 slides obliquely upward along the slide rail under the buoyancy force. When the float body 27 slides to the preset "power-off trigger position", it is in the red part of the three-color transparent cover 21, and the neodymium iron boron permanent magnet 29 inside the float body 27 causes the reed switch 31 or the Hall sensor 32 to act, generating a switching signal. This signal is transmitted to the PLC controller 14, and the PLC immediately cuts off the main circuit power supply of the control unit 10 to prevent leakage or short circuit. At the same time, the first warning light 9 flashes yellow light. When the ambient temperature is too low, the PLC controller 14 can activate the low-power PTC heating wire 23 embedded in the slide rail to prevent ice formation in the groove from affecting the movement of the float. When the water level drops and resets, the accumulated water is discharged through the drainage hole 24, and the float automatically slides back to the bottom of the tank under the action of gravity.

[0036] Upon receiving a water immersion trigger signal from the V-groove, the PLC controller 14 automatically switches to the backup power supply mode 13. It then sends commands to the two servo motors 4, causing them to rotate synchronously. The servo motors 4 drive the threaded transmission rod 5 to rotate. Guided by the one-way wheel 7, the internal threaded lifting plate 6 converts the rotational motion into a purely vertical upward motion. The main body 10 of the control unit is suspended from the internal threaded lifting plate 6 via the side bending plate 15 and the strip-shaped mounting plate 16, thus raising the entire unit. After being raised to a preset safe height (e.g., 30-50 cm), the servo motors 4 stop. The second warning light 11 illuminates or flashes red, indicating that the equipment has entered the lifting protection state. Based on the reciprocity of forces, during the lifting process, the pressure is transmitted to the diaphragm pressure sensor 18 via the return spring 17. The diaphragm pressure sensor 18 then transmits the pressure increase information to the PLC controller 14. The PLC controller 14, recognizing a continued threat of water immersion, forces the internal circuitry of the control unit 10 to be de-energized. Once the water level has completely receded, the servo motor 4 is reversed via operation by maintenance personnel or by receiving a remote command from the PLC, driving the control unit 10 to smoothly descend back to its original installation position. Finally, the main power supply is restored manually or automatically by the system, and the equipment resumes normal operation.

[0037] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0038] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A water immersion power-off structure for an outdoor traffic signal controller, characterized in that: include Side frame (2), two side frames (2) are provided, the two side frames (2) are symmetrically arranged, the side frame (2) is a box with a side opening, and the bottom surface of the side frame (2) is fixedly connected to the mounting base (1). The control unit body (10) is located between the two side frames (2) and is slidably disposed with respect to the side wall of the side frame (2). The control unit body (10) is located above the mounting base (1). A lifting assembly is located within the side frame (2) and is used to adjust the height of the main body (10) of the control unit. A pressure detection component is fixedly connected to the outer wall of the control unit and is adapted to the lifting component; A water immersion detection component is fixedly installed on the outer wall of any of the side frames (2) and is used to detect the water immersion status of the main body (10) of the controller.

2. The water immersion power-off structure of the outdoor traffic signal controller according to claim 1, characterized in that: The lifting assembly includes a threaded transmission rod (5) rotatably disposed within the side frame (2). The threaded transmission rod (5) is vertically disposed. A servo motor (4) is fixedly connected to the inner wall of the top side of the side frame (2). The output shaft of the servo motor (4) is fixedly connected to the top end of the threaded transmission rod (5). An internal threaded lifting plate (6) is installed inside the side frame (2). The threaded transmission rod (5) passes through the internal threaded lifting plate (6) and is threadedly engaged with the internal threaded lifting plate (6).

3. The water immersion power-off structure of the outdoor traffic signal controller according to claim 2, characterized in that: The pressure detection assembly includes a side bending plate (15) fixedly connected to the outer wall of the main body (10) of the control machine. A strip plate (16) is slidably connected to the bottom of the side bending plate (15). A thin film pressure sensor (18) is fixedly installed on the bottom wall of the bending part of the side bending plate. A number of return springs (17) are fixedly connected between the thin film pressure sensor (18) and the top wall of the strip plate (16). A notch bearing groove (8) is opened on the side of the top surface of the inner screw lifting plate (6). The bottom end of the strip plate (16) is located in the notch bearing groove (8).

4. The water immersion power-off structure of the outdoor traffic signal controller according to claim 3, characterized in that: The water immersion detection component includes a stainless steel V-shaped groove (20) fixedly connected to the outer wall of the side frame (2). The stainless steel V-shaped groove (20) is inclined. A T-shaped stainless steel slide rail (22) is provided on the inner wall of the stainless steel V-shaped groove (20). A heating wire (23) is filled in the T-shaped stainless steel slide rail (22). A guide boss (25) is slidably connected in the T-shaped stainless steel slide rail (22). A slider body (26) is fixedly connected between the two guide bosses (25). A float body (27) is provided through the middle of the slider body (26). A sealed air cavity (28) is provided at the upper end of the float body (27). A neodymium iron boron permanent magnet (29) is embedded in the float body (27). A tungsten steel counterweight (30) is located at the lower part of the float body (27). A reed switch (31) and a Hall sensor (32) are installed in the stainless steel V-shaped groove.

5. The water immersion power-off structure of the outdoor traffic signal controller according to claim 1, characterized in that: The inner screw lifting plate (6) is equipped with several one-way wheels (7) on its side wall, and the one-way wheels (7) are in contact with the inner wall of the side frame (2).

6. The water immersion power-off structure of the outdoor traffic signal controller according to claim 4, characterized in that: The main body (10) of the control unit is equipped with a PLC controller (14) that can cut off the power supply of the main body (10). The PLC controller (14) is electrically connected to the heating wire (23), the thin film pressure sensor (18), the reed switch (31), the Hall sensor (32) and the servo motor (4). The main body (10) of the control unit is equipped with a backup power supply (13), which is electrically connected to the PLC controller (14).

7. The water immersion power-off structure of the outdoor traffic signal controller according to claim 1, characterized in that: The top surface of the stainless steel V-shaped groove (20) is a three-color transparent cover plate (21), which is green, yellow and red from bottom to top. A drainage hole (24) is provided at the lower end of the stainless steel V-shaped groove (20), and an anti-detachment baffle (33) is installed at the end of the stainless steel V-shaped groove (20).

8. The water immersion power-off structure of the outdoor traffic signal controller according to claim 6, characterized in that: A first warning light (9) is installed on the side frame (2), and a second warning light (11) is installed on the main body of the controller (10). The first warning light (9) and the second warning light (11) are electrically connected to the PLC controller (14) respectively.

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