A mobile traffic signal and control method

Abstract

The application discloses a mobile traffic signal lamp and a control method, and belongs to the technical field of mobile traffic equipment. The mobile traffic signal lamp comprises a traffic signal lamp body, wherein the traffic signal lamp body comprises a base, a lamp body, a lamp rod and a connecting rod, four cameras are arranged on the top of the lamp body, and a control terminal is arranged on the base; a reversing unit and an impact buffering unit are further arranged on the base, the impact buffering unit is arranged around the base and is configured to slide to the center of the base along the radial direction of the base when the base is impacted, two limiting blocks are rotatably arranged on the reversing unit, and the limiting blocks are configured to rotate along the impact direction when the impact buffering unit slides to the center of the base, so that the lamp rod drives the lamp body to deflect along the impact direction; and the mobile traffic signal lamp actively reverses and avoids through the lamp rod, and the problem that the existing mobile traffic signal lamp has weak anti-impact and anti-overturning capabilities is solved.

Description

Technical Field

[0001] This invention relates to the field of mobile transportation equipment technology, and more particularly to a mobile traffic signal light and its control method. Background Technology

[0002] Traffic lights are the core equipment for routine traffic control at urban intersections. In scenarios such as road reconstruction and expansion, fixed traffic light malfunction repair, power outages and network interruptions, temporary road closures due to traffic accidents, and short-term traffic flow control at schools and markets, fixed traffic lights cannot function properly and can easily cause traffic flow chaos, minor collisions, and other traffic safety hazards at intersections. Therefore, mobile temporary traffic lights are widely used.

[0003] Traditional mobile traffic lights have limited functionality, offering only basic light signal indication and generally lacking integrated video surveillance components and systematic anti-collision protection structures. Furthermore, these devices lack the ability to automatically capture and record video after a vehicle collision, leaving no footage of the incident as evidence for liability determination and compensation after a hit-and-run. Traffic management departments can only rely on on-site traces and witness testimonies to determine accident responsibility, leading to difficulties in evidence collection and low efficiency in dispute resolution. Moreover, most devices operate offline in standalone mode; even those with added simple cameras lack the functions of collision-linked image capture, synchronized location information, and wireless data upload to the traffic management cloud platform. This prevents remote archiving and tracing of collision events, video clips, and geographical locations, resulting in delayed equipment failure warnings and low maintenance response efficiency.

[0004] On the other hand, existing mobile traffic lights mostly rely on the base counterweight and ground friction to fix their position, which makes them less resistant to impact and overturning. After being hit by a vehicle, they are prone to overall displacement, tipping over, or even the light pole breaking, resulting in serious damage to the signal light body, short service life, and high maintenance costs.

[0005] To address the aforementioned deficiencies, Chinese invention patent CN114319179B, in the prior art, discloses a collision-resistant multi-functional intelligent traffic signal pole. It has a collision-resistant buffer device at the bottom of the support shell, which includes a guide roller and a first spring. The guide roller guides the vehicle and provides initial buffering, while the first spring absorbs energy and reduces shock to lower the instantaneous impact force. At the same time, a camera is installed on the crossbeam.

[0006] However, this solution still has significant limitations: First, the buffer structure only uses guide rollers and a single layer of springs to release force, resulting in a single buffer level that can only handle minor scrapes and cannot withstand the larger impact force generated by a direct frontal collision with a vehicle. Second, it does not structurally address the problem of mobile traffic lights easily tipping over or breaking their poles after an impact, and the damage rate of the equipment after an impact remains high. Third, the camera does not form a linkage triggering mechanism with the anti-collision buffer structure, making it impossible to automatically capture images and upload relevant data at the moment of impact, and the needs for accident tracing and maintenance early warning are still not effectively met. Summary of the Invention

[0007] The purpose of this invention is to address the problems of weak impact and overturning resistance of existing mobile traffic lights, lack of linkage between monitoring and anti-collision structure for triggering capture, and lack of impact event data uploading and remote early warning and tracing capabilities, and to propose a mobile traffic signal light.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A mobile traffic signal light includes a traffic signal light body, which comprises a base, a light body, a light pole, and a connecting rod. The light body is fixed to the top of the light pole, and four cameras are mounted on the top of the light body. A control terminal is mounted on the base and electrically connected to the cameras. The base also includes a reversing unit and an impact buffer unit. The reversing unit is rotatably mounted on the base, and the impact buffer units are distributed around the base and slidably mounted on the base radially. The impact buffer unit is driven and cooperates with the reversing unit; the reversing unit includes two rotatably set limiting blocks, which are symmetrically arranged on both sides of the lamp post, and the lamp post and the limiting blocks form a vertical sliding pair.

[0009] In some embodiments, the impact buffer unit includes four buffer plates, a first transmission rod, a second transmission rod, a third transmission rod, and a fourth transmission rod. The four buffer plates are rotatably connected to their respective transmission rods. The first, second, third, and fourth transmission rods are all slidably disposed at the bottom of the base along the radial direction of the base. The first, second, third, and fourth transmission rods are arranged in a cross shape.

[0010] In some embodiments, a rotating part is integrally formed on the buffer plate, and a plurality of trapezoidal teeth are fixed on the rotating part, and the plurality of trapezoidal teeth are evenly distributed along the circumference of the rotating part; four tooth grooves are formed on the plate surface at the bottom of the base, and the four tooth grooves correspond one-to-one with the position of the buffer plate.

[0011] In some embodiments, the first transmission rod, the second transmission rod, the third transmission rod, and the fourth transmission rod are each provided with a one-way toothed plate that meshes with the reversing unit, and a plurality of elastic elements are provided between the first transmission rod, the second transmission rod, the third transmission rod, and the fourth transmission rod and the corresponding one-way toothed plate.

[0012] In some embodiments, the reversing unit includes a rotating disk with a square through hole in the center. Two connecting seats are integrally formed on the rotating disk and are symmetrically arranged along the center of the rotating disk. The two limiting blocks are rotatably connected to the corresponding connecting seats.

[0013] A square through hole is set in the center of the rotating disk, which can be plugged into the corresponding square shaft to achieve reliable torque transmission. The two connecting seats are integrally formed with the rotating disk, which has good structural integrity and is not easy to break or deform under stress. The two sets of connecting seats are symmetrically arranged with the center of the rotating disk, so that the limit blocks on both sides are subjected to balanced forces and the load is evenly distributed when the rotation changes direction. The limit blocks and the connecting seats adopt a rotating connection method, which provides the limit blocks with independent rotational freedom. While the rotating disk rotates in the same direction, the limit blocks can adaptively adjust their angles.

[0014] In some embodiments, the rotating disk extends downward in a vertical direction with a bushing, and a one-way gear is fixed at the bottom of the bushing. The one-way gear has two symmetrically arranged toothless smooth surfaces, and the one-way gear meshes with the one-way gear plate.

[0015] In some embodiments, the base is further provided with a pushing unit, the pushing unit including a pushing rod, the pushing rod being located below the lamp post and slidably mounted on the base in the vertical direction; the bottom of the lamp post is provided with a connecting rod and an arc-shaped sliding rod, the arc-shaped sliding rod sliding up and down in the vertical direction, and the pushing rod abutting against the arc-shaped sliding rod.

[0016] In some embodiments, the pushing unit further includes four pushing plates, which are slidably mounted on the base in a vertical direction and are spaced apart along the outer circumference of the rotating disk.

[0017] In some embodiments, one end of the limiting block is slidably connected to the lamp post, and the other end face of the limiting block is integrally formed with a push rod, which extends in the horizontal direction and abuts against the push plate.

[0018] The limiting block adopts a separate fixing structure of square plate, connecting shaft, and round plate, which is simple to assemble. The square plate slides with the light pole, which can smoothly realize the flipping action of the light pole. The transmission structure has high reliability. The square plate and round plate are rigidly connected by the connecting shaft to ensure stable force transmission and avoid component displacement, loosening and deformation during the flipping process, thus improving the structural stress stability. The horizontally arranged push rod and the push plate abut against each other for transmission. The push force acts directly on the push rod, with low force transmission loss, which can accurately drive the light pole to flip smoothly along the predetermined trajectory of the buffer plate.

[0019] A control method for a mobile traffic signal light includes the following steps: S1: After the control terminal detects an impact trigger signal, the camera captures the scene and stores it in the control terminal; S2: The impact buffer unit slides towards the center of the base under force, and the reversing unit drives the light pole to deflect in the direction of the impact; S3: During the deflection of the light pole 16, the camera captures the ground scene and transmits the ground scene to the control terminal; S4: After the scene acquisition is completed, the control terminal transmits the electrical signal to the cloud server via wireless communication to trigger an alarm and cuts off the power to the light.

[0020] Compared with the prior art, the present invention provides a mobile traffic signal light, which has the following beneficial effects.

[0021] 1. This invention, by setting an impact buffer unit, includes a buffer plate, a transmission rod, a rotating part, trapezoidal teeth, and tooth grooves. When a vehicle impacts a traffic light, the buffer plate on the impacted side transmits the impact force to the center of the base via the transmission rod. The radial sliding of the transmission rod forms the first level of buffering. At the same time, the trapezoidal teeth on the buffer plate are forced to flip upward under the limiting effect of the tooth grooves, forming the second level of buffering. The synergistic effect of the two levels of buffering effectively absorbs and disperses the impact energy, reduces the direct impact force on the traffic light body, and solves the problem of weak impact resistance and overturning resistance of existing mobile traffic lights. Compared with the existing technology that only uses guide rollers and single-layer springs to achieve buffering, the two-level buffering structure of this invention can withstand greater impact force, significantly improve the impact resistance of the equipment, reduce the probability of damage after the equipment is impacted, and reduce the later maintenance cost. 2. This invention, by installing four cameras on the top of the light body and electrically connecting them to the control terminal on the base, allows the control terminal to immediately control the cameras to capture images of the scene when the traffic light body is impacted, achieving automatic image capture at the moment of impact. Simultaneously, during the deflection of the light pole 16, the cameras follow the deflection of the light body to capture images of the ground and record key information such as the license plate number of the impacting vehicle. This solves the problem in the prior art where the cameras do not form a linkage triggering mechanism with the anti-collision structure and cannot achieve automatic image capture at the moment of impact, providing a complete chain of image evidence for subsequent liability determination and compensation.

[0022] Other advantages, objectives and features of the invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be learned from practice of the invention. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the folded structure of the present invention.

[0025] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0026] Figure 4 This is a schematic diagram showing the position and structure of the reversing unit and the impact buffer unit of the present invention.

[0027] Figure 5 This is a schematic diagram of the assembly structure of the commutation unit and the impact buffer unit of the present invention.

[0028] Figure 6 This is a schematic diagram showing the position and structure of the arc-shaped sliding rod and the push rod of the present invention.

[0029] Figure 7 This is a schematic diagram of the commutation unit structure of the present invention.

[0030] Figure 8 This is a schematic diagram of the impact buffer unit structure of the present invention.

[0031] Figure 9 This is a schematic diagram of the buffer plate structure of the present invention.

[0032] Figure 10 This is a schematic diagram of the rotating disk structure of the present invention.

[0033] In the picture: 1. Traffic signal light body; 11. Base; 111. Tooth groove; 12. Light body; 13. Control terminal; 14. Solar panel; 15. Camera; 16. Light pole; 17. Connecting rod; 18. Arc-shaped sliding rod; 2. Reversing unit; 21. Limiting block; 22. Rotating disk; 221. Connecting seat; 222. Push rod; 223. Bushing; 224. One-way gear; 3. Impact buffer unit; 31. Buffer plate; 311. Rotating part; 312. Trapezoidal tooth; 32. First transmission rod; 33. Second transmission rod; 34. Third transmission rod; 35. Fourth transmission rod; 36. One-way toothed plate; 361. Elastic element; 4. Pushing unit; 41. Pushing rod; 42. Pushing plate. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Reference Figure 1-10 A mobile traffic signal light includes a traffic signal light body 1, which comprises a base 11, a lamp body 12, a lamp post 16, and a connecting rod 17. The overall structure of the present invention consists of four main parts: the traffic signal light body 1, a reversing unit 2, an impact buffer unit 3, and a pushing unit 4. These parts are described in detail below according to their relative importance.

[0036] The traffic signal light body 1 is the main support and functional load-bearing structure of the equipment, including a base 11, a light body 12, a control terminal 13, a solar panel 14, a camera 15, a light pole 16, a connecting rod 17, and an arc-shaped sliding rod 18. The base 11 is the bottom support platform, the light pole 16 is vertically mounted on the base 11, the light body 12 is fixed to the top of the light pole 16 for displaying traffic signals, the solar panel 14 is located above the light body 12 for power supply, the control terminal 13 is located on the base 11 for centralized control, and four cameras 15 are located on the top of the light body 12 for multi-directional shooting.

[0037] The base 11 serves as the supporting foundation for the entire device and is fixedly placed on the road surface or at a designated location. The bottom of the lamp post 16 is connected to the arc-shaped sliding rod 18 via a connecting rod 17, and the lamp post 16 is slidably installed in the reversing unit 2 on the base 11 in a vertical direction. The lamp body 12 is fixed to the top of the lamp post 16, and the control terminal 13 is fixed inside or on the surface of the base 11. The control terminal 13 is electrically connected to four cameras 15 via cables. The solar panel 14 is electrically connected to the lamp body 12 and the control terminal 13 to provide power to the entire device.

[0038] The traffic signal light body 1 adopts an integrated design, combining signal indication, video surveillance, power supply system, and control terminal 13 into one unit, achieving self-powering, self-monitoring, and self-control. The solar panel 14 allows the device to operate independently without an external power source, making it suitable for temporary control scenarios such as road construction and power outages. The electrical connection between the control terminal 13 and the camera 15 provides the hardware foundation for subsequent collision-triggered image capture, enabling the device to have event-triggered video acquisition capabilities, solving the problems of traditional mobile traffic lights having limited functionality and lacking video surveillance and automatic image capture capabilities.

[0039] The impact buffer unit 3 includes four buffer plates 31 and four transmission rods (first transmission rod 32, second transmission rod 33, third transmission rod 34, and fourth transmission rod 35). Each buffer plate 31 has an integrally formed rotating part 311, and multiple trapezoidal teeth 312 are fixed on the rotating part 311, which are evenly distributed along the circumference of the rotating part 311. Each transmission rod has a unidirectional toothed plate 36 that slides along the width direction of the rod body, and multiple elastic elements 361 are provided on the end face of the unidirectional toothed plate 36 near the corresponding transmission rod. Four toothed grooves 111 are formed on the bottom plate surface of the base 11, and the four toothed grooves 111 correspond one-to-one with the positions of the buffer plates 31.

[0040] Four buffer plates 31 are located on the four outer sides of the base 11, and each buffer plate 31 is rotatably connected to a corresponding transmission rod. The four transmission rods are slidably mounted on the bottom of the base 11 along the radial direction, that is, the first transmission rod 32, the second transmission rod 33, the third transmission rod 34, and the fourth transmission rod 35 can slide along the four radial directions of the base 11, respectively. The rotating part 311 on the buffer plate 31 engages with the tooth groove 111 at the bottom of the base 11 through the trapezoidal tooth 312. When any transmission rod slides outward along the radial direction of the base 11, the corresponding buffer plate 31 is limited and flipped downward by the tooth groove 111, and the one-way toothed plate 36 is slidably mounted on the corresponding transmission rod. Multiple elastic elements 361 are arranged between the one-way toothed plate 36 and the corresponding transmission rod. The one-way toothed plate 36 slides in the width direction of the corresponding transmission rod through the elastic elements 361, and engages and disengages with the one-way gear 224 to realize the one-way transmission connection.

[0041] The impact buffer unit 3 constitutes the first and second level of buffer protection system of this invention. When a vehicle impacts a traffic light, the buffer plate 31 on the impact side first absorbs the impact, transmitting the impact force to the center of the base 11 via the transmission rod. The radial sliding of the transmission rod forms the first level of buffering, consuming the impact kinetic energy through sliding friction and displacement. Simultaneously, the trapezoidal teeth 312 on the buffer plate 31, under the limiting action of the tooth groove 111, force the buffer plate 31 to flip upward, converting the horizontal impact force into a flipping motion, forming the second level of buffering. The synergistic effect of the two levels of buffering significantly reduces the direct impact force on the traffic light body, effectively preventing the overall displacement and overturning of the equipment. In addition, the cooperation between the unidirectional toothed plate 36 and the elastic element 361 ensures that the transmission rod can only drive the reversing unit 2 in one direction, preventing the reversing unit 2 from malfunctioning due to the reverse rebound of the transmission rod after the impact, thus ensuring the unidirectionality and reliability of the reversing action. Compared with the prior art scheme that only uses guide rollers and a single layer of springs to achieve buffering, the two-level buffering structure of this invention can withstand greater impact forces, significantly improving the impact resistance of the equipment.

[0042] The reversing unit 2 includes a rotating disk 22, two limiting blocks 21, two connecting seats 221, a push rod 222, a bushing 223, and a one-way gear 224. The rotating disk 22 has a square through hole in the center. The two connecting seats 221 are symmetrically arranged around the center of the rotating disk 22 and integrally formed with it. The limiting block 21 consists of a square plate, a connecting shaft, and a circular plate. The square plate and the circular plate are fixed to both ends of the connecting shaft. The free end of the square plate is slidably installed in the guide groove of the lamp post 16. The push rod 222 is integrally formed on the end face of the circular plate away from the lamp post 16, and the push rod 222 extends horizontally. The bushing 223 extends vertically downwards from the rotating disk 22. The one-way gear 224 is fixed to the bottom of the bushing 223, and two toothless smooth surfaces are symmetrically provided on the one-way gear 224.

[0043] A rotating disk 22 is rotatably mounted on a base 11, with a square through hole in the center for the lamp post 16 to pass through. Two limiting blocks 21 are rotatably connected to corresponding connecting seats 221. The two limiting blocks 21 are symmetrically arranged on both sides of the lamp post 16. Two guide grooves are formed on the lamp post 16 in the vertical direction. The two limiting blocks 21 are slidably installed in the guide grooves and slide up and down along the guide grooves, with the sides of the limiting blocks 21 fitting against the sides of the guide grooves. The rotating disk 22 at the top of the bushing 223 meshes with the one-way gear 224 at the bottom of the bushing 223 and the one-way toothed plate 36 of the impact buffer unit 3. When the one-way toothed plate 36 pushes the one-way gear 224, the rotating disk 22 rotates around the vertical axis, causing the limiting blocks 21 and the lamp post 16 to deflect in the impact direction. The two toothless smooth surfaces symmetrically arranged on the one-way gear 224 allow the one-way gear 224 to disengage from the one-way toothed plate 36 after rotating a certain angle, avoiding excessive rotation. The push rod 222 abuts against the push plate 42 of the push unit 4 and receives the auxiliary thrust of the push plate 42.

[0044] The reversing unit 2 is the core mechanism of this invention for enabling the lamp post 16 to actively avoid impacts. When the transmission rod of the impact buffer unit 3 slides inward, the rotating disk 22 is driven to rotate through the meshing of the one-way toothed plate 36 and the one-way gear 224. The rotating disk 22 drives the limiting block 21 to rotate, and the limiting block 21 in turn drives the lamp post 16 and the lamp body 12 to deflect along the impact direction. This mechanism prevents the lamp post 16 from rigidly resisting impacts, but instead actively tilts to avoid impacts, fundamentally preventing the lamp post from breaking and the lamp body 12 from being damaged. The smooth surface design of the toothless area on the one-way gear 224 limits the rotation angle of the rotating disk 22, preventing the lamp post 16 from excessively deflecting and causing secondary damage. The sliding connection between the limiting block 21 and the lamp post 16 allows the lamp post 16 to have a certain displacement margin in the vertical direction, which, together with the pushing unit 4, achieves linkage reversal. Compared with the prior art, this invention achieves a technological leap from passive impact resistance to active avoidance through the reversing unit 2, significantly reducing the damage rate of equipment after impact and extending its service life.

[0045] The jacking unit 4 includes a jacking rod 41 and four jacking plates 42. The jacking rod 41 is slidably mounted on the base 11 in the vertical direction, and the four jacking plates 42 are slidably mounted on the base 11 in the vertical direction, with the four jacking plates 42 spaced apart along the outer circumference of the rotating disk 22.

[0046] The push rod 41 is located below the lamp post 16 and abuts against the arc-shaped sliding rod 18 at the bottom of the lamp post 16. When the lamp post 16 is deflected by the reversing unit 2, the arc-shaped sliding rod 18 slides downward in the vertical direction, pushing the push rod 41 downward. The downward movement of the push rod 41 simultaneously pushes the four push plates 42 to slide downward in the vertical direction. The four push plates 42 abut against the corresponding push rods 222 in the reversing unit 2. When the push plates 42 move downward, they push the corresponding push rods 222, which in turn drive the circular plate of the limiting block 21 to rotate, further driving the lamp post 16 to flip along the sliding direction of the buffer plate 31.

[0047] The push unit 4 is an auxiliary linkage mechanism for the reversing unit 2. Its function is to amplify the reversing torque through mechanical linkage after the lamp post 16 begins to deflect, ensuring that the lamp post 16 can smoothly complete the deflection action in the impact direction. Specifically, the deflection of the lamp post 16 causes the arc-shaped sliding rod 18 to move downward, which pushes the push rod 41. The push rod 41 pushes the push plate 42, causing the push rod 222 to rotate. The push rod 222 drives the limit block 21 to rotate synchronously, forming a positive feedback linkage loop of "lamp post 16 deflection → arc-shaped sliding rod 18 moves downward → push rod 41 moves downward → push plate 42 moves downward → push rod 222 is pushed → limit block 21 assists in rotation → lamp post 16 deflects further". This design allows the lamp post 16 to obtain continuous auxiliary thrust after the initial deflection, ensuring the completion of the reversing action and avoiding jamming during the reversing due to excessive friction or load. Meanwhile, the arc-shaped surface design of the arc-shaped sliding rod 18 allows the vertical sliding to be smoothly converted into a thrust on the push rod 41, reducing mechanical impact and improving the reliability and durability of the linkage mechanism.

[0048] The control method of this invention includes four steps: S1 impact detection and on-site image capture, S2 buffer reversal linkage, S3 ground image acquisition, and S4 remote alarm and power failure protection. The control method is executed collaboratively by the control terminal 13, camera 15, wireless communication module, and cloud server.

[0049] S1: When the traffic signal light body 1 is impacted, the control terminal 13 detects the impact trigger signal and immediately controls the camera 15 to capture the scene and store it in the control terminal 13; S2: The impact buffer unit 3 slides towards the center of the base 11 under force, and drives the light pole 16 to deflect along the impact direction through the reversing unit 2, realizing the active reversing of the light body 12 to avoid the impact; S3: During the deflection of the light pole 16, the camera 15 changes the shooting angle with the deflection of the light body 12, captures the ground scene and transmits the ground scene to the control terminal 13; S4: The control terminal 13 transmits the electrical signal (including the scene scene, ground scene, timestamp, positioning information, etc.) to the cloud server for alarm through wireless communication and cuts off the power to the light body 12.

[0050] The control method of this invention achieves complete closed-loop processing of collision events. Step S1 triggers image capture immediately upon impact, ensuring that key information of the offending vehicle is recorded in a timely manner, solving the problems of traditional equipment lacking automatic capture capabilities and difficulty in obtaining evidence after a hit-and-run. Step S2 achieves buffering and reversal through the linkage of mechanical structures, requiring no electric drive. Even in the event of a power outage or circuit damage, it can still complete the obstacle avoidance protection of the light pole 16, exhibiting high reliability. Step S3 utilizes the deflection of the light pole 16 to drive the angle change of the camera 15, cleverly combining the reversing action of the light body 12 with ground information collection. It can acquire key ground information such as license plates without the need for an additional steering mechanism, simplifying the equipment structure. Step S4 uploads the collision data to the traffic management cloud platform in real time via wireless communication, realizing remote archiving and tracing of collision events and maintenance early warning. At the same time, the automatic power-off function prevents secondary accidents caused by short circuits after the collision. The entire control method forms a complete technical closed loop from physical protection to information collection to remote early warning, significantly improving the safety and intelligence level of mobile traffic lights.

[0051] In this invention, when a vehicle collides with the traffic signal light body 1, the impact force first acts on the impact buffer units 3 around the base 11. Specifically, four buffer plates 31 are located on the four sides of the base 11. The impacted buffer plates 31 transmit the impact force to the transmission rods (first transmission rod 32, second transmission rod 33, third transmission rod 34, and fourth transmission rod 35) that are rotatably connected to them. The transmission rods slide towards the center of the base 11 in the radial direction, forming the first-level buffer. During the inward sliding process of the transmission rods, the integrally formed rotating part 311 on the buffer plate 31 and the trapezoidal teeth 312 on its surface are limited by the tooth groove 111 at the bottom of the base 11, causing the buffer plate 31 to be forced to flip upward, converting the horizontal impact force into the flipping motion of the buffer plate 31, forming the second-level buffer, thereby effectively absorbing and dispersing the impact energy generated by the vehicle collision and reducing the direct impact damage to the traffic signal light body.

[0052] During the sliding process of the transmission rod towards the center of the base 11, the one-way toothed plate 36 on the transmission rod meshes with the one-way gear 224 in the reversing unit 2; the end face of the one-way toothed plate 36 is provided with an elastic element 361, which realizes the one-way transmission connection between the one-way toothed plate 36 and the reversing unit 2, ensuring that the transmission rod can only drive the reversing unit 2 to rotate in one direction along the impact direction, preventing reverse rebound; the one-way gear 224 is fixed at the bottom of the bushing 223 extending downward from the rotating disk 22, and the one-way gear 224 is symmetrically provided with two toothless smooth surfaces. When the one-way toothed plate 36 pushes the one-way gear 224 to rotate, the rotating disk 22 rotates accordingly.

[0053] Two symmetrically arranged connecting seats 221 are integrally formed on the rotating disk 22. The two limiting blocks 21 are rotatably connected to the corresponding connecting seats 221. The lamp post 16 and the limiting blocks 21 form a vertical sliding pair. When the rotating disk 22 is driven to rotate by the one-way gear 224, the limiting blocks 21 rotate along the sliding direction of the impact buffer unit 3 (i.e. the impact direction), thereby causing the lamp post 16 and the lamp body 12 to deflect along the impact direction, so that the signal lamp body 12 actively tilts towards the impact direction, avoiding the lamp post 16 from breaking due to rigid resistance, and realizing the active avoidance protection of the lamp body 12.

[0054] Meanwhile, the push unit 4 works in coordination; the bottom of the lamp post 16 is provided with a connecting rod 17 and an arc-shaped sliding rod 18, which slides up and down vertically. When the lamp post 16 is deflected by the reversing unit 2, the arc-shaped sliding rod 18 moves downward and pushes the push rod 41, which slides downward vertically. The downward movement of the push rod 41 pushes four push plates 42, which are spaced apart along the outer circumference of the rotating disk 22, to move downward. The push plates 42 push the push rod 222 on the end face of the circular plate of the limiting block 21, further assisting the lamp post 16 to flip along the sliding direction of the buffer plate 31, enhancing the reliability and stability of the reversing action, and forming a mechanical linkage amplification effect in the reversing process.

[0055] Four cameras 15 are mounted on the top of the light body 12, and a control terminal 13 is mounted on the base 11. The control terminal 13 is electrically connected to the cameras 15. At the moment the traffic light body 1 is impacted (i.e., at the same time the impact buffer unit 3 starts to operate), the control terminal 13 detects the impact signal (which can be achieved through a vibration sensor, a pressure sensor, or a displacement trigger switch of the transmission rod). Preferably, a transmission rod displacement trigger switch is used as the impact signal acquisition component. The displacement trigger switch is installed inside the base 11, corresponding to the sliding path of the transmission rod, and is electrically connected to the control terminal 13. When the transmission rod slides inward due to the impact, the displacement trigger switch is triggered to send a signal to the control terminal. Terminal 13 outputs an impact trigger signal, and control terminal 13 immediately controls four cameras 15 to capture the scene and store it in control terminal 13, completing the automatic capture of the moment of impact; subsequently, as the lamp post 16 drives the lamp body 12 to deflect along the impact direction, the shooting angle of the camera 15 changes with the deflection of the lamp body 12, from the original horizontal road monitoring image to the ground image diagonally downward or even directly below. Control terminal 13 continuously controls the camera 15 to capture the ground image, record the characteristic information of the impacting vehicle (such as license plate number, vehicle color, model, etc.) and the movement trajectory of the vehicle after the impact, providing a complete chain of image evidence for subsequent accountability and compensation.

[0056] The control terminal 13 has a built-in wireless communication module (such as 4G / 5G / NB-IoT). After completing the impact capture and ground image acquisition, the control terminal 13 transmits electrical signals containing the on-site image, ground image, impact timestamp, and equipment positioning information (GPS / BeiDou) to the cloud server (traffic management cloud platform) via wireless communication. Upon receiving the data, the cloud server automatically triggers an alarm process, notifying traffic management departments and equipment maintenance personnel to handle the situation promptly. Simultaneously, after completing the data upload, the control terminal 13 performs a power-off operation on the light body 12 to prevent secondary safety accidents (such as electrical fires) caused by short circuits due to the impact, ensuring on-site safety.

[0057] In summary, this invention achieves two-stage buffering and energy absorption through the impact buffer unit 3, enables the light pole 16 to actively change direction and avoid collisions through the mechanical linkage of the reversing unit 2 and the pushing unit 4, achieves automatic capture of the moment of impact and collection of ground information through the linkage of the camera 15 and the control terminal 13, and achieves remote alarm and automatic power cut-off through wireless communication. This forms a complete technical closed loop from physical protection to information collection and remote early warning, effectively solving the problems of weak impact resistance of existing mobile traffic lights, lack of linkage between monitoring and anti-collision structure to trigger capture, and lack of impact event data upload and remote early warning and tracing capabilities.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A mobile traffic signal light, comprising a traffic signal light body (1), wherein the traffic signal light body (1) comprises a base (11), a lamp body (12), a lamp post (16), and a connecting rod (17), characterized in that, The lamp body (12) is fixed to the top of the lamp post (16). The top of the lamp body (12) is provided with four cameras (15). The base (11) is provided with a control terminal (13), which is electrically connected to the cameras (15). The base (11) is also provided with a reversing unit (2) and an impact buffer unit (3). The reversing unit (2) is rotatably mounted on the base (11). The impact buffer unit (3) is distributed around the base (11) and is slidably mounted on the base (11) along the radial direction of the base (11). The impact buffer unit (3) is driven to cooperate with the reversing unit (2); the reversing unit (2) includes two rotatably set limiting blocks (21), the two limiting blocks (21) are symmetrically arranged on both sides of the lamp post (16), and the lamp post (16) and the limiting blocks (21) form a vertical sliding pair.

2. A mobile traffic signal light according to claim 1, characterized in that, The impact buffer unit (3) includes four buffer plates (31), a first transmission rod (32), a second transmission rod (33), a third transmission rod (34) and a fourth transmission rod (35). The four buffer plates (31) are rotatably connected to the corresponding transmission rods. The first transmission rod (32), the second transmission rod (33), the third transmission rod (34) and the fourth transmission rod (35) are all slidably disposed at the bottom of the base (11) along the radial direction of the base (11). The first transmission rod (32), the second transmission rod (33), the third transmission rod (34) and the fourth transmission rod (35) are arranged in a cross shape.

3. A mobile traffic signal light according to claim 2, characterized in that, The buffer plate (31) has an integrally formed rotating part (311), and multiple trapezoidal teeth (312) are fixed on the rotating part (311). The multiple trapezoidal teeth (312) are evenly distributed along the circumference of the rotating part (311). Four tooth grooves (111) are opened on the bottom plate surface of the base (11), and the four tooth grooves (111) correspond one-to-one with the position of the buffer plate (31).

4. A mobile traffic signal light according to claim 3, characterized in that, The first transmission rod (32), the second transmission rod (33), the third transmission rod (34) and the fourth transmission rod (35) are each provided with a one-way toothed plate (36) that meshes with the reversing unit (2). The first transmission rod (32), the second transmission rod (33), the third transmission rod (34) and the fourth transmission rod (35) are provided with multiple elastic elements (361) between them and the corresponding one-way toothed plate (36).

5. A mobile traffic signal light according to claim 4, characterized in that, The reversing unit (2) includes a rotating disk (22), which has a square through hole in the middle. Two connecting seats (221) are integrally formed on the rotating disk (22). The two connecting seats (221) are symmetrically arranged along the center position of the rotating disk (22). The two limiting blocks (21) are rotatably connected to the corresponding connecting seats (221).

6. A mobile traffic signal light according to claim 5, characterized in that, The rotating disk (22) extends downward in the vertical direction with a bushing (223). A one-way gear (224) is fixed at the bottom of the bushing (223). Two toothless smooth surfaces are symmetrically arranged on the one-way gear (224). The one-way gear (224) meshes with the one-way toothed plate (36).

7. A mobile traffic signal light according to claim 6, characterized in that, The base (11) is also provided with a push unit (4), which includes a push rod (41). The push rod (41) is located below the lamp post (16) and is slidably mounted on the base (11) in the vertical direction. The bottom of the lamp post (16) is provided with a connecting rod (17) and an arc-shaped sliding rod (18). The arc-shaped sliding rod (18) slides up and down in the vertical direction, and the push rod (41) abuts against the arc-shaped sliding rod (18).

8. A mobile traffic signal light according to claim 7, characterized in that, The push unit (4) also includes four push plates (42), which are slidably mounted on the base (11) in the vertical direction and are spaced apart along the outer circumference of the rotating disk (22).

9. A mobile traffic signal light according to claim 8, characterized in that, One end of the limiting block (21) is slidably connected to the lamp post (16), and the other end face of the limiting block (21) is integrally formed with a push rod (222). The push rod (222) extends in the horizontal direction and abuts against the push plate (42).

10. A control method for a mobile traffic signal light, applied to the mobile traffic signal light according to any one of claims 1-9, characterized in that, Includes the following steps: S1: After the control terminal (13) detects the impact trigger signal, the camera (15) captures the scene and stores it in the control terminal (13); S2: The impact buffer unit (3) slides towards the center of the base (11) under force, and drives the lamp post (16) to deflect in the direction of the impact through the reversing unit (2); S3: During the deflection of the lamp post (16), the camera (15) captures the ground scene and transmits the ground scene to the control terminal (13); S4: After the scene acquisition is completed, the control terminal (13) transmits the electrical signal to the cloud server through wireless communication to trigger an alarm and cuts off the power to the lamp body (12).

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