Noise interference-free road directivity safety early warning device

Abstract

The invention provides a road directivity safety early warning device without noise interference, which relates to the technical field of traffic facilities and comprises a shell, a data processing unit and a concrete ground, a base is installed at the bottom of the machine shell, a top plate is fixedly arranged at the top of the machine shell, a snapshot mechanism is installed in the machine shell, an ultrasonic assembly is installed in the machine shell and located below the snapshot mechanism, and a speed measuring mechanism is installed in the machine shell and located below the ultrasonic assembly. A display screen is installed in the outer wall of the machine shell in an embedded mode. According to the scheme, vehicle information is finally confirmed through a radar testing technology and an image recognition technology, sound and image information is accurately transmitted through an LED screen and a loudspeaker, meanwhile, sound is accurately projected into a designated area where a vehicle is located through an ultrasonic directional sound transmission technology, prompt voice containing the designated vehicle information is broadcasted, and the effect of prompting the vehicle is achieved. Due to the characteristic of small-angle directivity of audio of the ultrasonic directional sound transmission technology, the sound is prevented from interfering other vehicles or environments.

Description

Technical Field

[0001] The invention relates to the technical field of traffic facilities, and in particular to a road directional safety warning device without noise interference. Background Art

[0002] For scenarios where traffic warning broadcasts are required on expressways, national roads, and provincial roads, the existing technology is to play prompt audio information in a loop through a loudspeaker, causing noise interference to the surrounding environment, and the existing technology method uses full-area broadcasting.

[0003] Announcement No. CN212322429U discloses a high-speed speed measurement reminder device for vehicle detection, which belongs to the field of vehicle detection technology and solves the problem that existing highway speeding cannot be reminded immediately. Its technical points are: it includes a base and a vertical pole, a crossbeam is erected between the vertical poles, a plurality of signal display lights are installed on the crossbeam, a plurality of LED light boards and a photo processing device are arranged on the upper part of the crossbeam, and an alarm is arranged on the upper part of the LED light board, which can immediately remind speeding vehicles to drive carefully, and also can remind other vehicles to pay attention to the speeding vehicles in the current section, which can effectively reduce the occurrence of vehicle accidents on highway sections, protect the life and property safety of drivers and passengers, and has the advantages of instant reminder and wide range of action.

[0004] The existing solution uses a range alarm through a horn, which causes noise interference to the surrounding environment, causing unnecessary trouble to nearby residents or staff. It cannot accurately point to the speeding vehicle, and will also interfere with normal-driving vehicles in the surrounding area. There is a possibility that drivers will mistakenly think that they are speeding and slow down collectively, posing a risk to safe road driving.

[0005] Therefore, it is necessary to provide a road directional safety warning device without noise interference to solve the above technical problems. Summary of the invention

[0006] The present invention provides a road directional safety warning device without noise interference, which solves the technical problem that the horn in the related art adopts a range alarm, causes noise interference to the surrounding environment, and cannot accurately point to the speeding vehicle.

[0007] In order to solve the above technical problems, the present invention provides a road directional safety warning device without noise interference, comprising a housing, a data processing unit and a concrete floor;

[0008] A base is installed at the bottom of the housing, a top plate is fixed on the top of the housing, a capture mechanism is installed inside the housing, an ultrasonic assembly is installed inside the housing and below the capture mechanism, and a speed measuring mechanism is installed inside the housing and below the ultrasonic assembly;

[0009] A display screen is embedded in the outer wall of the casing, the capture mechanism includes a motion camera, the speed measuring mechanism includes a radar speed meter, the ultrasonic assembly includes a receiving plate fixed to the inner wall of the casing, a mounting frame is fixed on the upper surface of the receiving plate, a rotating motor is installed inside the mounting frame by bolts, a first gear is connected to the keyway of the output shaft of the rotating motor, a rotating horn is connected to the keyway at the axis of the first gear, and a fixed horn is fixed on the upper surface of the receiving plate and inside the mounting frame.

[0010] Preferably, the data processing unit, the motion camera and the display screen are electrically connected in series, the display screen, the ultrasonic assembly and the data processing unit are electrically connected in parallel, and the data processing unit and the radar speed meter are electrically connected in series.

[0011] Preferably, the upper surface of the rotating horn is fixedly connected to the bottom surface of the first gear, and the lower surface of the rotating horn and the upper surface of the fixed horn are in contact with each other.

[0012] Preferably, a driving motor is installed on the outer wall of the casing by bolts, the output shaft of the driving motor is connected to a second rotating rod in a keyway inside the casing, a driving pulley is fixedly provided on the outer wall of the second rotating rod, a second cam is fixedly provided on the outer wall of the second rotating rod and located on one side of the driving pulley, a second connecting plate is rotatably connected to the outer wall of the second cam, a second mounting seat is fixedly provided on the inner wall of the casing, a second mounting plate is rotatably connected to the outside of the second mounting seat, a second notch is opened on the outer wall of the casing, and a second positioning plate is fixedly provided on the bottom of the second mounting plate.

[0013] Preferably, the radar speed meter is installed with bolts and the second mounting plate, the top of the second connecting plate is rotatably connected to the outer wall of the second positioning plate, and the two ends of the second rotating rod are rotatably connected to the inner wall of the casing.

[0014] Preferably, a first rotating rod is rotatably connected to the inside of the casing and located above the second rotating rod, a driven pulley is fixedly provided on the outer wall of the first rotating rod, a transmission belt is sleeved on the outer walls of the driven pulley and the driving pulley, a first cam is fixedly provided at one end of the first rotating rod and located on one side of the driven pulley, a first connecting plate is rotatably connected to the outer wall of the first cam, a first mounting seat is fixedly provided on the inner wall of the casing, a first mounting plate is rotatably connected to the outside of the first mounting seat, a first positioning plate is fixedly provided on the bottom of the first mounting plate, and a first slot is opened inside the casing.

[0015] Preferably, the motion camera is mounted to the first mounting plate via bolts, and the top of the first connecting plate is rotatably connected to the outer wall of the first positioning plate.

[0016] Preferably, a second gear is meshingly connected inside the mounting frame and located on one side of the first gear, a first pulley is connected to a keyway at the top axis of the second gear, a second pulley is rotatably connected to the upper surface of the mounting frame and located on one side of the first pulley, a connecting belt is sleeved on the outer walls of the first pulley and the second pulley, and a baffle is fixedly provided on the side wall of the second pulley.

[0017] Preferably, the axis center of the second gear is rotatably connected to the mounting frame, and the baffle is in an arc-shaped structure.

[0018] Compared with the related art, the road directional safety warning device without noise interference provided by the present invention has the following beneficial effects:

[0019] The various functional modules are integrated into one, aiming to confirm vehicle information through radar testing technology and image recognition technology, and accurately convey sound and image information through LED screens and speakers. At the same time, ultrasonic directional sound transmission technology is used to accurately project sound into the designated area where the vehicle is located, and broadcast a prompt voice containing the designated vehicle information. Due to the small-angle directionality of the audio of ultrasonic directional sound transmission technology, the sound is prevented from interfering with other vehicles or the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the best structure provided by the present invention;

[0022] Figure 2 for Figure 1 The schematic diagram of the cross-sectional structure of the casing shown;

[0023] Figure 3 for Figure 2 The schematic diagram of the ultrasonic assembly structure shown;

[0024] Figure 4 Schematic diagram of the workflow for measuring vehicle speed and providing reminders;

[0025] Figure 5 for Figure 4 The system framework flow chart shown;

[0026] Figure 6 for Figure 4 The top view shown;

[0027] Figure 7for Figure 2 The schematic diagram of the capture mechanism structure shown;

[0028] Figure 8 for Figure 2 Schematic cross-sectional view of the speed measuring mechanism shown.

[0029] Description of Figure Numbers:

[0030] 1. Concrete floor;

[0031] 2. Casing;

[0032] 3. Capture mechanism, 31. Motion camera, 32. First mounting seat, 33. First mounting plate, 34. First positioning plate, 35. First rotating rod, 36. Driven pulley, 37. Transmission belt, 38. First cam, 39. First connecting plate;

[0033] 4. speed measuring mechanism, 41. radar speed measuring device, 42. second mounting seat, 43. second mounting plate, 44. second positioning plate, 45. second rotating rod, 46. driving pulley, 47. second cam, 48. second connecting plate;

[0034] 5. ultrasonic assembly, 51. receiving plate, 52. mounting frame, 53. first gear, 54. rotating horn, 55. fixed horn, 56. first pulley, 57. second pulley, 58. connecting belt, 59. baffle, 510. second gear, 511. rotating motor;

[0035] 6. First notch, 7. Second notch, 8. Display screen, 9. Driving motor, 10. Base, 11. Top plate, 12. Data processing unit.

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The invention provides a road directional safety warning device without noise interference.

[0039] First embodiment:

[0040] Please combine Figures 1 to 6 , a road directional safety warning device without noise interference, comprising a housing 2, a data processing unit 12 and a concrete floor 1;

[0041] A base 10 is installed at the bottom of the housing 2, a top plate 11 is fixed on the top of the housing 2, a capture mechanism 3 is installed inside the housing 2, an ultrasonic assembly 5 is installed inside the housing 2 and below the capture mechanism 3, and a speed measuring mechanism 4 is installed inside the housing 2 and below the ultrasonic assembly 5;

[0042] A display screen 8 is embedded in the outer wall of the casing 2, the capture mechanism 3 includes a motion camera 31, the speed measuring mechanism 4 includes a radar speed meter 41, and the ultrasonic assembly 5 includes a receiving plate 51 fixed to the inner wall of the casing 2, a mounting frame 52 is fixed on the upper surface of the receiving plate 51, a rotating motor 511 is installed inside the mounting frame 52 by bolts, the output shaft keyway of the rotating motor 511 is connected to a first gear 53, a rotating horn 54 is connected to the keyway at the axis of the first gear 53, and a fixed horn 55 is fixed on the upper surface of the receiving plate 51 and inside the mounting frame 52.

[0043] See also Figure 2 , Figure 4 and Figure 5 : The motion camera 31 captures and recognizes the license plate information of the vehicles in the lane area, and synchronizes the result information with the data processing unit 12;

[0044] The data processing unit 12 controls the radar speed meter 41 to detect the current speed of the vehicle and synchronizes the result information with the data processing unit 12;

[0045] When the detected vehicle is not speeding, the device does not need feedback. When the detected vehicle is speeding, the collected license plate information is displayed through the LED display screen 8, and the driver of the speeding vehicle is prompted through pictures and texts. At the same time, after the fixed speaker 55 and the rotating speaker 54 in the ultrasonic assembly 5 adjust their angles, the warning area is delineated, and the audio projection area is set at a certain distance in front of the vehicle. According to the radar's detection of the current vehicle speed, the data processing unit calculates the vehicle's arrival time, and after the vehicle enters the area, a directional audio reminder is given to the vehicle entering the designated area without affecting work and life outside the range, and at the same time, it does not interfere with other normally traveling vehicles, thereby ensuring driving safety.

[0046] The data processing unit 12, the motion camera 31 and the display screen 8 are electrically connected in series, the display screen 8, the ultrasonic assembly 5 and the data processing unit 12 are electrically connected in parallel, and the data processing unit 12 and the radar speed meter 41 are electrically connected in series.

[0047] The upper surface of the rotating horn 54 is fixedly connected to the bottom surface of the first gear 53 , and the lower surface of the rotating horn 54 and the upper surface of the fixed horn 55 are in contact with each other.

[0048] See also Figure 3 When adjusting the ultrasonic assembly 5, the rotating motor 511 rotates and controls the first gear 53 and the rotating horn 54 at the bottom to rotate. When the rotating horn 54 rotates, it will form an angle with the fixed horn 55 in a fixed state, so that an angle can be formed. After the angle is magnified, it will define the warning area.

[0049] With respect to the prior art, the technical problem solved by the present application is to provide a complete solution for detecting vehicles in a designated area by using a motion camera 31 and a radar speed meter 41, and then using a speaker using ultrasonic directional sound transmission technology to give early warnings to vehicles in a designated area without affecting staff, residents, and other vehicles in non-areas.

[0050] Ultrasonic directional sound transmission technology: Ultrasonic directional speakers are directional sound broadcasts. They are a type of broadcast that uses directional sound technology to accurately focus sound on a specific area or target. They use related technologies to control the propagation direction and intensity of sound waves and transmit sound to a specific location in a directional manner, so as to provide the target area or target audience with a clearer and more specific sound experience, and reduce the diffusion of sound and interference with the surrounding sound environment.

[0051] Radar speed measurement technology: Radar speed measurement mainly uses the principle of Doppler effect. When the target approaches the radar antenna, the frequency of the reflected signal will be higher than the transmitter frequency; conversely, when the target moves away from the antenna, the frequency of the reflected signal will be lower than the transmitter frequency. In this way, the relative speed of the target and the radar can be calculated by the change in frequency (when the target is facing the radar, the Doppler frequency is positive, and when the target is facing away from the radar, the Doppler frequency is negative).

[0052] This embodiment integrates various functional modules into one, aims to confirm vehicle information through radar testing technology and image recognition technology, and accurately transmit sound and image information through LED screens and speakers. At the same time, ultrasonic directional sound transmission technology is used to accurately project sound into the designated area where the vehicle is located, and broadcast a prompt voice containing designated vehicle information. Due to the small-angle directional characteristics of the audio of ultrasonic directional sound transmission technology, the sound is prevented from interfering with other vehicles or the environment;

[0053] Widely used, it can be applied to any road, and can also be applied to buildings such as toll booths, checkpoints, etc.

[0054] It is highly intelligent, with accurate data collected by cameras and radars, and can provide directional reminders through pictures, texts, and sounds;

[0055] The construction is convenient. The previous technical solution required the assumption of a gantry, which was difficult to construct. The device can be placed on the side of the road or lane.

[0056] Second embodiment:

[0057] Combination Figure 2 , Figure 7 and Figure 8 A driving motor 9 is installed on the outer wall of the casing 2 by bolts, and the output shaft of the driving motor 9 is connected to a second rotating rod 45 at an internal keyway of the casing 2. A driving pulley 46 is fixedly provided on the outer wall of the second rotating rod 45, and a second cam 47 is fixedly provided on the outer wall of the second rotating rod 45 and located on one side of the driving pulley 46. A second connecting plate 48 is rotatably connected to the outer wall of the second cam 47, and a second mounting seat 42 is fixedly provided on the inner wall of the casing 2. A second mounting plate 43 is rotatably connected to the outside of the second mounting seat 42. A second notch 7 is opened on the outer wall of the casing 2, and a second positioning plate 44 is fixedly provided at the bottom of the second mounting plate 43.

[0058] The radar speed meter 41 is installed with bolts to the second mounting plate 43 , the top of the second connecting plate 48 is rotatably connected to the outer wall of the second positioning plate 44 , and both ends of the second rotating rod 45 are rotatably connected to the inner wall of the housing 2 .

[0059] A first rotating rod 35 is rotatably connected to the inside of the casing 2 and located above the second rotating rod 45. A driven pulley 36 is fixedly provided on the outer wall of the first rotating rod 35. A transmission belt 37 is sleeved on the outer walls of the driven pulley 36 and the driving pulley 46. A first cam 38 is fixedly provided on one end of the first rotating rod 35 and located on one side of the driven pulley 36. A first connecting plate 39 is rotatably connected to the outer wall of the first cam 38. A first mounting seat 32 is fixedly provided on the inner wall of the casing 2. A first mounting plate 33 is rotatably connected to the outside of the first mounting seat 32. A first positioning plate 34 is fixedly provided on the bottom of the first mounting plate 33. A first slot 6 is opened inside the casing 2.

[0060] See also Figure 7 and Figure 8 : In actual use, if there are few vehicles, such as at night and in the early morning, the motion camera 31 and the radar speed meter 41 can be fixed at a certain angle to work. If there are many vehicles and busy periods, the road inspectors can start the drive motor 9 according to the situation at the time. After the drive motor 9 is started, it can drive the second rotating rod 45 to rotate. The rotating second rotating rod 45 controls the driving pulley 46 and the second cam 47 to rotate. During the rotation of the second cam 47, the second connecting plate 48 is driven to pull the second positioning plate 44 to control the second mounting plate 43 to perform a circular flipping motion along the hinge of the second mounting seat 42, so that the radar speed meter 41 can be cyclically controlled to perform a circular reciprocating flip;

[0061] During the rotation process, the driving pulley 46 will drive the upper driven pulley 36 through the transmission belt 37 to control the first rotating rod 35 to drive the first cam 38 to rotate. During the rotation of the first cam 38, the first connecting plate 39 will be driven to pull the first positioning plate 34 to control the first mounting plate 33 to perform a circular flipping motion along the hinge of the first mounting seat 32, so that the motion camera 31 can be cyclically controlled to perform a circular reciprocating flipping.

[0062] The motion camera 31 is mounted to the first mounting plate 33 by bolts, and the top of the first connecting plate 39 is rotatably connected to the outer wall of the first positioning plate 34 .

[0063] Understandable: Combined Figure 1 and Figure 2 It can be seen that by providing the first slot 6 and the second slot 7 , when the motion camera 31 and the radar speed meter 41 are flipped in a circular motion, they can flip and move in the first slot 6 and the second slot 7 , and thus will not interfere with the housing 2 .

[0064] This embodiment: Compared with the traditional fixed capture and speed measurement design, this case can adjust the angles of the motion camera 31 and the radar speed gun 41 according to the time period. If it is during a period with many vehicles, the user can control the motion camera 31 and the radar speed gun 41 to rotate in a linked circle, thereby increasing the shooting range while achieving more accurate speed measurement. If it is during a period with few vehicles, the motion camera 31 and the radar speed gun 41 can be directly fixed at a certain angle to shoot and measure the speed.

[0065] Third embodiment:

[0066] See also Figure 3 A second gear 510 is meshedly connected inside the mounting frame 52 and located on one side of the first gear 53. A first pulley 56 is connected to a keyway at the top axis of the second gear 510. A second pulley 57 is rotatably connected to the upper surface of the mounting frame 52 and located on one side of the first pulley 56. A connecting belt 58 is sleeved on the outer walls of the first pulley 56 and the second pulley 57. A baffle 59 is fixedly provided on the side wall of the second pulley 57.

[0067] See also Figure 3: During the operation of the first embodiment, the rotating rotary motor 511 will drive the first gear 53 to rotate. During the rotation of the first gear 53, it will engage and control the rotation of the second gear 510. The rotating second gear 510 will rotate and drive the first pulley 56 to control the second pulley 57 through the connecting belt 58 to rotate the control baffle 59 to perform circular motion. Due to the diameter difference between the first gear 53 and the second gear 510, a differential ratio is formed, causing the second gear 510 to rotate more than the first gear 53. In this way, when the baffle 59 first rotates alternately, it is ensured that the rotating horn 54 and the fixed horn 55 are completely exposed.

[0068] The axis of the second gear 510 is rotatably connected to the mounting frame 52 , and the baffle 59 is in an arc-shaped structure.

[0069] This embodiment: During the operation of the first embodiment, the fixed horn 55 and the rotating horn 54 of this case can not only rotate to form an angle and change the warning range, but also the rotating horn 54 can also control the baffle 59 to rotate in a linked manner during the rotation process. The speed difference set between the first gear 53 and the second gear 510 causes the baffle 59 to rotate faster than the rotating horn 54, thereby ensuring that the rotating horn 54 can be completely exposed. Therefore, such a design can not only protect the ultrasonic assembly 5, but also achieve integrated protection.

[0070] Please refer to Figures 1 to 8 The working principle of a road directional safety warning device without noise interference provided by the present invention is as follows:

[0071] Step S1: If there are few vehicles, such as at night and in the early morning, the motion camera 31 and the radar speed meter 41 should be fixed at a certain angle to work;

[0072] The motion camera 31 can capture and identify the license plate information of the vehicles in the lane area, and synchronize the result information with the data processing unit 12. The data processing unit 12 controls the radar speed meter 41 to detect the current speed of the vehicle, and synchronizes the result information with the data processing unit 12. When the detected vehicle is not speeding, the device does not need to feedback. When the detected vehicle is speeding, the collected license plate information is displayed through the LED display screen 8, and the driver of the speeding vehicle is prompted through pictures and texts. At the same time, the fixed speaker 55 and the rotating speaker 54 in the ultrasonic assembly 5 adjust their angles to define the warning area.

[0073] Step S2: If there are many vehicles and it is busy, the road inspector can start the drive motor 9 according to the situation at that time. After the drive motor 9 is started, it can drive the second rotating rod 45 to rotate. The rotating second rotating rod 45 controls the driving pulley 46 and the second cam 47 to rotate. During the rotation of the second cam 47, the second connecting plate 48 is driven to pull the second positioning plate 44 to control the second mounting plate 43 to perform a circular flipping movement along the hinge of the second mounting seat 42, so that the radar speed meter 41 can be cyclically controlled to perform a circular reciprocating flip;

[0074] During the rotation process, the driving pulley 46 will drive the upper driven pulley 36 through the transmission belt 37 to control the first rotating rod 35 to drive the first cam 38 to rotate. During the rotation of the first cam 38, the first connecting plate 39 will be driven to pull the first positioning plate 34 to control the first mounting plate 33 to perform a circular flipping motion along the hinge of the first mounting seat 32, so that the motion camera 31 can be cyclically controlled to perform a circular reciprocating flipping.

[0075] Step S3: The rotating motor 511 will drive the first gear 53 to rotate. During the rotation of the first gear 53, it will engage and control the rotation of the second gear 510. The rotating second gear 510 will rotate and drive the first pulley 56 to control the second pulley 57 through the connecting belt 58 to rotate the control baffle 59 to perform circular motion. Due to the diameter difference between the first gear 53 and the second gear 510, a differential ratio is formed, causing the second gear 510 to rotate more than the first gear 53. In this way, when the baffle 59 first rotates alternately, it is ensured that the rotating horn 54 and the fixed horn 55 are fully exposed.

[0076] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A road directional safety warning device without noise interference, characterized in that: Includes the computer case, data processing unit and concrete floor; A base is installed at the bottom of the housing, a top plate is fixed on the top of the housing, a capture mechanism is installed inside the housing, an ultrasonic assembly is installed inside the housing and below the capture mechanism, and a speed measuring mechanism is installed inside the housing and below the ultrasonic assembly; A display screen is embedded in the outer wall of the casing, the capture mechanism includes a motion camera, the speed measuring mechanism includes a radar speed meter, the ultrasonic assembly includes a receiving plate fixed to the inner wall of the casing, a mounting frame is fixed on the upper surface of the receiving plate, a rotating motor is installed inside the mounting frame by bolts, a first gear is connected to the keyway of the output shaft of the rotating motor, a rotating horn is connected to the keyway at the axis of the first gear, and a fixed horn is fixed on the upper surface of the receiving plate and inside the mounting frame.

2. A road directional safety warning device without noise interference according to claim 1, characterized in that: The data processing unit, the motion camera and the display screen are electrically connected in series, the display screen, the ultrasonic assembly and the data processing unit are electrically connected in parallel, and the data processing unit and the radar speed meter are electrically connected in series.

3. The road directional safety warning device without noise interference according to claim 1 is characterized in that: The upper surface of the rotating horn is fixedly connected to the bottom surface of the first gear, and the lower surface of the rotating horn and the upper surface of the fixed horn are in contact with each other.

4. The road directional safety warning device without noise interference according to claim 1 is characterized in that: A driving motor is installed on the outer wall of the casing by bolts, and the output shaft of the driving motor is connected to a second rotating rod at an internal keyway of the casing, a driving pulley is fixedly provided on the outer wall of the second rotating rod, a second cam is fixedly provided on the outer wall of the second rotating rod and located on one side of the driving pulley, a second connecting plate is rotatably connected to the outer wall of the second cam, a second mounting seat is fixedly provided on the inner wall of the casing, a second mounting plate is rotatably connected to the outside of the second mounting seat, a second notch is opened on the outer wall of the casing, and a second positioning plate is fixedly provided on the bottom of the second mounting plate.

5. The road directional safety warning device without noise interference according to claim 4 is characterized in that: The radar speed meter is installed with bolts on the second mounting plate, the top of the second connecting plate is rotatably connected to the outer wall of the second positioning plate, and the two ends of the second rotating rod are rotatably connected to the inner wall of the casing.

6. The road directional safety warning device without noise interference according to claim 1 is characterized in that: A first rotating rod is rotatably connected to the inside of the casing and located above the second rotating rod, a driven pulley is fixedly provided on the outer wall of the first rotating rod, a transmission belt is sleeved on the outer walls of the driven pulley and the driving pulley, a first cam is fixedly provided at one end of the first rotating rod and located on one side of the driven pulley, a first connecting plate is rotatably connected to the outer wall of the first cam, a first mounting seat is fixedly provided on the inner wall of the casing, a first mounting plate is rotatably connected to the outside of the first mounting seat, a first positioning plate is fixedly provided on the bottom of the first mounting plate, and a first slot is opened inside the casing.

7. A road directional safety warning device without noise interference according to claim 6, characterized in that: The motion camera is mounted on the first mounting plate via bolts, and the top of the first connecting plate is rotatably connected to the outer wall of the first positioning plate.

8. The road directional safety warning device without noise interference according to claim 1 is characterized in that: A second gear is meshedly connected inside the mounting frame and located on one side of the first gear, a first pulley is connected to a keyway at the top axis of the second gear, a second pulley is rotatably connected to the upper surface of the mounting frame and located on one side of the first pulley, a connecting belt is sleeved on the outer walls of the first pulley and the second pulley, and a baffle is fixedly provided on the side wall of the second pulley.

9. The road directional safety warning device without noise interference according to claim 8, characterized in that: The axis center of the second gear is rotatably connected to the mounting frame, and the baffle is in an arc-shaped structure.

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