Road sign for intelligent traffic
By using high-definition wide-angle cameras and automatic cleaning components on smart transportation road signs, the problem of untimely manual cleaning has been solved, achieving automated cleaning, ensuring clear display of signs, and improving the accuracy and safety of traffic information.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING LUSHEN TRANSPORTATION TECH CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-21
AI Technical Summary
The cleaning of existing road signs relies on manual labor, which consumes a lot of manpower and resources and is not timely, affecting drivers' access to accurate traffic information and posing traffic safety hazards.
A smart traffic road sign was designed, which uses a high-definition wide-angle camera in conjunction with cleaning and clamping components. Automatic cleaning is achieved through a gear transmission system driven by a forward and reverse motor, and the sign is clamped and fixed by a servo motor to ensure stability and cleaning efficiency.
It has enabled automated cleaning of signs, improved cleaning efficiency, ensured clear display of signs, reduced manual intervention, improved the accuracy and timeliness of drivers' access to traffic information, and reduced traffic safety hazards.
Smart Images

Figure CN224148581U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of intelligent transportation equipment technology, specifically to a road sign for intelligent transportation. Background Technology
[0002] With the acceleration of urbanization and the continuous increase in car ownership, traffic congestion and traffic safety issues are becoming increasingly prominent. Intelligent transportation, as a concept and technological system that utilizes advanced information technology to improve traffic conditions, has received widespread attention and development. Road signs, as an important component of intelligent transportation systems, not only provide simple road information but also need to work in conjunction with other intelligent devices to achieve real-time traffic information updates and intelligent guidance.
[0003] Currently, the cleaning of road signs mainly relies on regular manual cleaning, which not only consumes a lot of manpower and resources, but also results in untimely cleaning. During the interval between two cleaning sessions, the signs are not clearly visible, affecting drivers' ability to obtain accurate traffic information and posing a traffic safety hazard.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a smart traffic road sign. Utility Model Content
[0005] The purpose of this utility model is to provide a smart traffic road sign to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a smart traffic road sign, comprising a mounting plate and a clamping assembly. A column is mounted on the top of the mounting plate, and a high-definition wide-angle camera is mounted on the upper outer side of the column. The clamping assembly is located on the upper right side of the column, and a cleaning assembly is mounted on the top of the clamping assembly. The cleaning assembly includes a housing, a forward and reverse motor, a drive shaft, a drive gear, a driven rack, a driven gear, a transmission shaft, a first support arm, a second support arm, a support plate, a longitudinal cleaning strip, and a timer. A reversible motor is installed on the right side of the interior, and the output end of the reversible motor is connected to a drive shaft. A drive gear is sleeved on the outside of the drive shaft, and a driven rack is connected to the outside of the drive gear. A driven gear is also connected to the outside of the driven rack, and a transmission shaft passes through the middle of the driven gear. A support arm is connected to the outside of both the drive shaft and the transmission shaft, and a support arm is hinged to the other end of the support arm. A support plate is hinged to the other end of the support arm, and a longitudinal cleaning strip is provided at the bottom of the support plate. A timer is installed on the driven rack.
[0007] Furthermore, the clamping assembly includes a back plate, a servo motor, and a bidirectional lead screw, with the servo motor installed on the lower right side of the back plate, and the output end of the servo motor connected to the bidirectional lead screw.
[0008] Furthermore, the clamping assembly also includes a lead screw nut and a clamping plate, and the lead screw nut is externally connected to the bidirectional lead screw, and the clamping plate is externally mounted on the lead screw nut, and the clamping plate has a T-shaped structure when viewed from below.
[0009] Furthermore, the box body is provided with grooves on the lower left side and the upper right side, and the driven rack passes through the groove on the lower left side of the box body.
[0010] Furthermore, the driving gear and the driven gear are symmetrically distributed about the vertical central axis of the housing, and the housing and the transmission shaft are rotatably connected.
[0011] Furthermore, each of the support arm one and support arm two is provided in two pieces, and the two support arms two are symmetrically distributed about the vertical central axis of the support plate.
[0012] Furthermore, the timer is electrically connected to a controller, and the controller is electrically connected to a high-definition wide-angle camera.
[0013] This utility model provides a smart traffic road sign with the following advantages:
[0014] 1. The drive shaft and drive gear of this utility model rotate under the drive of a forward and reverse motor. The drive gear meshes with the driven rack to transmit power and make the driven gear rotate, so that the drive shaft and transmission shaft rotate counterclockwise and clockwise respectively. This causes the angles of support arm one and support arm two to change slowly, and drives the support plate and longitudinal cleaning strip to move longitudinally to clean the surface of the sign, ensuring that the sign maintains a clear display.
[0015] 2. This utility model uses a servo motor to drive a bidirectional lead screw to rotate, causing the lead screw and nut to move closer together. The clamping plates on the left and right sides then clamp and fix the signboard tightly, ensuring the stability of the signboard on the back plate and preventing it from falling off. It also improves the flexibility and convenience of signboard installation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a smart traffic road sign according to this utility model;
[0017] Figure 2 This is a cross-sectional structural diagram of the box body of a road sign for intelligent transportation according to this utility model;
[0018] Figure 3This is a cross-sectional view of the back panel structure of a smart traffic road sign according to this utility model;
[0019] Figure 4 This is a three-dimensional structural diagram of the driven rack of a road sign for intelligent transportation according to this utility model.
[0020] In the diagram: 1. Mounting plate; 2. Column; 3. High-definition wide-angle camera; 4. Clamping assembly; 401. Back plate; 402. Servo motor; 403. Two-way lead screw; 404. Lead screw nut; 405. Clamping plate; 5. Cleaning assembly; 501. Box body; 502. Forward and reverse motor; 503. Drive shaft; 504. Drive gear; 505. Driven rack; 506. Driven gear; 507. Transmission shaft; 508. Support arm one; 509. Support arm two; 510. Support plate; 511. Longitudinal cleaning strip; 512. Timer. Detailed Implementation
[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0022] like Figure 1 , Figure 2 and Figure 4As shown, a smart traffic road sign includes a mounting plate 1 and a clamping assembly 4. A column 2 is mounted on the top of the mounting plate 1, and a high-definition wide-angle camera 3 is mounted on the upper exterior of the column 2. The clamping assembly 4 is located on the upper right side of the column 2, and a cleaning assembly 5 is mounted on the top of the clamping assembly 4. The cleaning assembly 5 includes a housing 501, a reversible motor 502, a drive shaft 503, a drive gear 504, a driven rack 505, a driven gear 506, a transmission shaft 507, a first support arm 508, a second support arm 509, a support plate 510, a longitudinal cleaning strip 511, and a timer 512. The reversible motor 502 is mounted on the right side inside the housing 501, and the output end of the reversible motor 502 is connected to the drive shaft 503. The drive shaft 503 is fitted with a drive gear 504, and the drive gear 504 is connected to the outside of the drive gear 504. The driven rack 505 is also connected to the outside of the driven rack 505, and the driven gear 506 is connected to the outside of the driven rack 505. A drive shaft 507 passes through the middle of gear 506. Both drive shaft 503 and drive shaft 507 are connected to a first support arm 508. The other end of the first support arm 508 is hinged to a second support arm 509, and the other end of the second support arm 509 is hinged to a support plate 510. A longitudinal cleaning strip 511 is provided at the bottom of the support plate 510. A timer 512 is mounted on the driven rack 505. Slide grooves are provided on the lower left and upper right sides of the housing 501. 505 passes through the groove on the lower left side of the box 501. The driving gear 504 and the driven gear 506 are symmetrically distributed about the vertical central axis of the box 501. The box 501 and the transmission shaft 507 are rotatably connected. There are two support arms 1 508 and two support arms 2 509. The two support arms 2 509 are symmetrically distributed about the vertical central axis of the support plate 510. The timer 512 is electrically connected to the controller, and the controller is electrically connected to the high-definition wide-angle camera 3.
[0023] The specific operation is as follows: Drive shaft 503 and drive gear 504 rotate under the drive of forward and reverse motor 502. Drive gear 504 meshes with driven rack 505 to transmit power to drive gear 506, so that drive shaft 503 and transmission shaft 507 rotate counterclockwise and clockwise respectively. This causes the angles of support arm 1 508 and support arm 2 509 to change slowly, and drives support plate 510 and longitudinal cleaning strip 511 to move longitudinally to clean the surface of the sign, ensuring that the sign maintains a clear display.
[0024] like Figure 3As shown, the clamping assembly 4 includes a back plate 401, a servo motor 402, and a bidirectional lead screw 403. The servo motor 402 is installed on the lower right side of the back plate 401, and the output end of the servo motor 402 is connected to the bidirectional lead screw 403. The clamping assembly 4 also includes a lead screw nut 404 and a clamping plate 405. The lead screw nut 404 is connected to the outside of the bidirectional lead screw 403, and the clamping plate 405 is installed on the outside of the lead screw nut 404. The clamping plate 405 has a T-shaped structure when viewed from below.
[0025] The specific operation is as follows: the servo motor 402 drives the bidirectional lead screw 403 to rotate, so that the lead screw nut 404 moves closer to each other. The clamping plates 405 on the left and right sides are used to clamp and fix the signboard in a strong way, which can ensure the stability of the signboard on the back plate 401, prevent the signboard from falling off, and improve the flexibility and convenience of the signboard installation.
[0026] In summary, when using this intelligent transportation road sign, first place the sign in front of the back plate 401, then control the servo motor 402 to drive the bidirectional lead screw 403 to rotate, causing the lead screw nut 404 to move closer to each other, so that the clamping plates 405 on the left and right sides clamp the sign tightly, ensuring the stability of the sign on the back plate 401.
[0027] Next, the mounting plate 1 is fixed to a suitable position on the road with bolts. After installation, it is put into normal use. After the sign is put into use, the timer 512 automatically triggers the cleaning component 5 to start according to the preset cycle. For example, it is set to clean once a day at 6:00 am. The forward and reverse motor 502 drives the drive shaft 503 and the drive gear 504 to rotate. The drive gear 504 and the driven rack 505 mesh to transmit power to make the driven gear 506 rotate, so that the drive shaft 503 and the transmission shaft 507 rotate counterclockwise and clockwise respectively. When the included angle between the first support arm 508 and the second support arm 509 changes, the support plate 510 and the longitudinal cleaning strip 511 are longitudinally displaced by the traction of the second support arm 509 to clean the surface of the sign. Since the inner surface of the longitudinal cleaning strip 511 is provided with dense cleaning bristles, the bristles are made of flexible and wear-resistant microfiber material, which can effectively absorb dust and stains without scratching the surface of the sign, thus ensuring that the sign maintains a clear display state.
[0028] In addition, after the high-definition wide-angle camera 3 is connected to the controller via a data cable, the controller is then connected to the wireless communication module. This allows the image data captured by the high-definition wide-angle camera 3, which has wide dynamic range and infrared night vision capabilities, to be processed by the controller and then sent to the Internet via the wireless communication module. Staff can view the images and make manual judgments via their mobile phones. Under normal circumstances, if the surface of the sign is only slightly polluted, continuous monitoring is only required. If moderate or heavy pollution occurs, the cleaning component 5 will be activated in a timely manner through the controller to ensure that the sign is restored to normal operation as soon as possible. Compared with traditional manual cleaning methods, this greatly improves the accuracy and timeliness of drivers obtaining traffic information.
[0029] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A road sign for intelligent transportation, comprising a mounting plate (1) and a clamping assembly (4), characterized in that, The mounting plate (1) has a column (2) on its top, and a high-definition wide-angle camera (3) is installed on the upper outside of the column (2). The clamping assembly (4) is located on the upper right side of the column (2), and a cleaning assembly (5) is located on the top of the clamping assembly (4). The cleaning assembly (5) includes a housing (501), a reversible motor (502), a drive shaft (503), a drive gear (504), a driven rack (505), a driven gear (506), a transmission shaft (507), a first support arm (508), a second support arm (509), a support plate (510), a longitudinal cleaning strip (511), and a timer (512). The reversible motor (502) is installed on the right side inside the housing (501), and the output of the reversible motor (502) is... A drive shaft (503) is connected to the output end. A drive gear (504) is sleeved on the outside of the drive shaft (503), and a driven rack (505) is connected to the outside of the drive gear (504). A driven gear (506) is also connected to the outside of the driven rack (505), and a transmission shaft (507) passes through the middle of the driven gear (506). A support arm (508) is connected to the outside of both the drive shaft (503) and the transmission shaft (507). A support arm (509) is hinged to the other end of the support arm (508), and a support plate (510) is hinged to the other end of the support arm (509). A longitudinal cleaning strip (511) is provided at the bottom of the support plate (510). A timer (512) is installed on the driven rack (505).
2. The road sign for intelligent transportation according to claim 1, characterized in that, The clamping assembly (4) includes a back plate (401), a servo motor (402) and a bidirectional lead screw (403), and the servo motor (402) is installed on the lower right side of the back plate (401), and the output end of the servo motor (402) is connected to the bidirectional lead screw (403).
3. A road sign for intelligent transportation according to claim 2, characterized in that, The clamping assembly (4) further includes a lead screw nut (404) and a clamping plate (405), and the lead screw nut (404) is connected to the outside of the bidirectional lead screw (403). The clamping plate (405) is installed on the outside of the lead screw nut (404), and the clamping plate (405) has a T-shaped structure when viewed from below.
4. The intelligent traffic road sign of claim 1, wherein, The box body (501) is provided with a sliding groove on the lower left side and the upper right side, and the driven rack (505) passes through the sliding groove on the lower left side of the box body (501).
5. The intelligent traffic road sign of claim 1, wherein, The driving gear (504) and driven gear (506) are symmetrically distributed about the vertical central axis of the housing (501), and the housing (501) and the transmission shaft (507) are rotatably connected.
6. The intelligent traffic road sign of claim 1, wherein, Two support arms (508) and two support arms (509) are provided, and the two support arms (509) are symmetrically distributed about the vertical central axis of the support plate (510).
7. The intelligent traffic road sign of claim 1, wherein, The timer (512) is electrically connected to a controller, and the controller is electrically connected to a high-definition wide-angle camera (3).