Advertising board with self-cleaning function

Abstract

The invention relates to the field of advertising board cleaning, in particular to an advertising board with a self-cleaning function, which comprises a fixed frame and an advertising board arranged in the fixed frame, a mounting ring groove is formed in the inner circumferential surface of the fixed frame, and a cleaning mechanism is mounted in the mounting ring groove; the cleaning mechanism comprises a cleaning motor fixedly connected to the inner wall of the mounting ring groove, a cleaning screw rotationally mounted on the inner wall of the mounting ring groove and a cleaning guide rod fixedly connected to the inner wall of the mounting ring groove, and the cleaning screw and the cleaning guide rod are located on the two sides of the advertising board correspondingly and are parallel to each other; an output shaft of the cleaning motor is fixedly connected with the cleaning screw rod, a cleaning plate is arranged on one side of the advertising board, the cleaning screw rod and the cleaning guide rod penetrate into the cleaning plate, the cleaning screw rod is in threaded connection with the cleaning plate, and the cleaning plate is fixedly connected with cleaning sponge making contact with the advertising board. The problem that the billboard cleaning efficiency is low is solved.

Description

Technical Field

[0001] The invention relates to the field of billboard cleaning, in particular to a billboard with a self-cleaning function. Background Art

[0002] With the acceleration of modern industrialization and the increasing demand for material goods and cultural products, a wide variety of consumer products has emerged, leading to increasingly fierce competition. Widespread publicity is often necessary for a product to gain consumer recognition and acceptance. To promote its products, businesses often employ a variety of advertising methods, with outdoor billboards attracting significant attention as a key form of advertising. However, dust easily accumulates on the display screen of outdoor billboards, requiring regular cleaning to ensure effective advertising.

[0003] In the related art, since most billboards are located at a high position from the ground, when the billboard needs to be cleaned, the staff first needs to use a lifting vehicle to lift themselves in front of the billboard, and then the staff will clean the billboard. The staff is required to adjust the position of the lifting vehicle multiple times to clean the entire billboard.

[0004] Regarding the above-mentioned related technologies, during the process of cleaning the billboards, the operation process of the staff is relatively complicated, and the staff is also required to stand on the lifting device to operate, which poses a safety hazard and leads to low cleaning efficiency of the billboards. Summary of the Invention

[0005] In order to solve the problem of low cleaning efficiency of billboards, the present invention provides a billboard with a self-cleaning function.

[0006] The present invention provides a billboard with a self-cleaning function using the following technical solutions:

[0007] A billboard with a self-cleaning function comprises a fixed frame and a billboard arranged in the fixed frame, a mounting ring groove is provided on the inner circumferential surface of the fixed frame, a cleaning mechanism is installed in the mounting ring groove, the cleaning mechanism comprises a cleaning motor fixedly connected to the inner wall of the mounting ring groove, a cleaning screw rotatably installed on the inner wall of the mounting ring groove, and a cleaning guide rod fixedly connected to the inner wall of the mounting ring groove, the cleaning screw and the cleaning guide rod are respectively located on both sides of the billboard and are parallel to each other, the output shaft of the cleaning motor is fixedly connected to the cleaning screw, a cleaning plate is provided on one side of the billboard, the cleaning screw and the cleaning guide rod are both inserted into the cleaning plate, the cleaning screw is threadedly connected to the cleaning plate, a cleaning sponge in contact with the billboard is fixedly connected to the cleaning plate, and a control mechanism for controlling the opening and closing of the cleaning motor is installed on the top of the fixed frame.

[0008] Preferably, a water collecting trough is provided on the top of the fixed frame, and two filter screens arranged to be inclined outward are fixedly connected to the top of the water collecting trough, and the two filter screens are fixedly connected to each other. A first water spray cavity is formed at the bottom of the cleaning plate, and a plurality of first water spray holes that are connected to the first water spray cavity are provided on the side wall of the bottom of the cleaning plate facing the billboard. The first water spray holes are located below the cleaning sponge. A first switch tube is fixedly connected to the top of the cleaning plate, and the bottom of the first switch tube is connected to the first water spray cavity. The top of the first switch tube is connected to the bottom of the water collecting trough through the first water inlet pipe, and the first switch tube is installed with a first switch component for controlling the flow of water.

[0009] Preferably, the first switch member includes a first switch shaft rotatably mounted in the first switch tube, the first switch shaft being fixedly connected to a first switch valve plate, the first switch shaft extending to the outside of the first switch tube and being fixedly connected to a first gear, and the top and bottom of the mounting ring groove being fixedly connected to a drive plate;

[0010] A plurality of teeth are hingedly connected on the side wall of the driving plate, and the hinge shafts installed in the plurality of teeth are located at the top of the teeth. The hinge shafts installed in the plurality of teeth are all sleeved with torsion springs, and the first gear can engage with the plurality of teeth.

[0011] Preferably, a second water spray chamber is formed on the top of the cleaning plate, and a plurality of second water spray holes that are connected to the second water spray chamber are opened on the side wall of the top of the cleaning plate facing the billboard. The second water spray holes are located above the cleaning sponge. A second switch tube is fixedly connected to the top of the cleaning plate, and the bottom of the second switch tube is connected to the second water spray chamber. The top of the second switch tube is connected to the bottom of the water collecting tank through a second water inlet pipe, and a second switch component for controlling the flow of water is installed in the second switch tube.

[0012] Preferably, the second switch member includes a second switch shaft rotatably mounted in the second switch tube, the second switch shaft is fixedly connected to a second switch valve plate, the second switch shaft extends to the outside of the second switch tube and is fixedly connected to a second gear, and the inner wall of the bottom of the mounting ring groove is fixedly connected to a first rack meshing with the second gear.

[0013] Preferably, a squeezing mechanism is installed on the top of the cleaning plate, and the squeezing mechanism includes an squeezing guide rod fixedly connected to the top of the cleaning plate, an squeezing guide plate is provided above the cleaning plate, the squeezing guide rod is passed through the squeezing guide plate, an squeezing spring is fixedly connected between the squeezing guide plate and the cleaning plate, and a squeezing plate is fixedly connected to the bottom of the squeezing guide plate, and the squeezing plate can contact the cleaning sponge, and the squeezing plate is located above the second water spray hole, and an abutment plate is fixedly connected to the inner bottom surface of the mounting ring groove, and the abutment plate can contact the cleaning sponge, a water filter hole is provided on the abutment plate, and a drainage hole is provided on the inner bottom surface of the mounting ring groove, and a transmission mechanism is installed on the cleaning plate, and the cleaning screw can drive the squeezing guide plate to move through the transmission mechanism.

[0014] Preferably, a transmission shaft is rotatably mounted on the inner top surface of the mounting ring groove, a conveyor belt is sleeved on the transmission shaft and the cleaning screw, a third gear is fixedly connected to the transmission shaft, a second rack meshing with the third gear is slidably mounted on the inner wall of the mounting ring groove, a first spring is fixedly connected between the second rack and the inner wall of the mounting ring groove, a smooth section is provided at the bottom of the cleaning screw, a second spring is fixedly connected to the inner bottom surface of the mounting ring groove, and the top of the second spring can abut against the cleaning plate;

[0015] The top of the cleaning plate is fixedly connected to a fixed block, and the transmission mechanism includes a first transmission shaft rotatably mounted on the fixed block, a cam is fixedly connected to the first transmission shaft, and the cam contacts the extrusion guide plate, and a second transmission shaft is rotatably mounted on the cleaning plate, a first bevel gear is fixedly connected to the first transmission shaft, and a second bevel gear meshing with the first bevel gear is fixedly connected to the second transmission shaft;

[0016] A third transmission shaft is rotatably mounted on the inner bottom surface of the mounting ring groove, a fourth gear is sleeved on the cleaning screw, the fourth gear is slidingly connected to the cleaning screw, the fourth gear is rotatably connected to the cleaning plate, a fifth gear is fixedly connected to the second transmission shaft, and a sixth gear is fixedly connected to the third transmission shaft, and the sixth gear can engage with the fourth gear and the fifth gear at the same time.

[0017] Preferably, the control mechanism includes a control guide rod fixedly connected to the bottom surface of the water collection tank, a floating plate is placed in the water collection tank, the control guide rod is passed through the floating plate, the top of the filter is fixedly connected to a waterproof box, the top of the floating plate is vertically provided with a control rod, the control rod passes through the filter and extends into the waterproof box, a battery is fixedly connected to the waterproof box, the battery is electrically connected to the external solar panel through a wire, the battery is electrically connected to the cleaning motor through a wire, a first electric contact electrically connected to the cleaning motor through a wire is provided on the top of the control rod, a second electric contact electrically connected to the battery through a wire is provided on the inner wall of the waterproof box, the second electric contact is used in conjunction with the first electric contact, and a locking mechanism for locking the control rod is installed in the water collection tank.

[0018] Preferably, a mounting groove is provided on the inner wall of the top of the water collection trough, and the locking mechanism includes a locking spring fixedly connected to the inner wall of the mounting groove and a locking rod placed in the mounting groove, the locking spring is fixedly connected to the locking rod, the locking rod abuts against the control rod, and a locking groove for inserting the locking rod is provided on the side wall of the control rod, and an unlocking mechanism for pulling the locking rod out of the locking groove is installed at the bottom of the water collection trough.

[0019] Preferably, a first sliding groove is provided on the inner wall of the bottom of the water collection tank, and a second sliding groove that passes through the mounting groove is provided on the inner top surface of the first sliding groove. The unlocking mechanism includes a first unlocking rod placed in the first sliding groove and a second unlocking rod placed in the second sliding groove. The first unlocking rod extends into the water collection tank and is formed with a first inclined surface. The floating plate can contact the first inclined surface. The bottom of the second unlocking rod is formed with a second inclined surface. The first unlocking rod is in contact with the second inclined surface. The bottom of the locking rod is provided with an unlocking groove for inserting the second unlocking rod. The unlocking groove is formed with a third inclined surface on the inner wall near the locking spring, and the second unlocking rod is in contact with the third inclined surface.

[0020] In summary, the present invention includes at least the following beneficial technical effects:

[0021] 1. Start the control mechanism, which controls the cleaning motor to start. The cleaning motor drives the cleaning screw to rotate, which drives the cleaning plate to move, which drives the cleaning sponge to move. The cleaning sponge can wipe the dust on the billboard, eliminating the need for staff to hold cleaning tools to operate the billboard, thus solving the problem of low billboard cleaning efficiency.

[0022] 2. When encountering rainy or snowy weather, water can flow through the filter into the water collection tank, which collects the water. When fallen leaves and debris fall on the filter, they will slide to the side of the fixed frame along the inclination angle of the filter and will not cause clogging of the filter. When the billboard is cleaned with the cleaning sponge, the first switch is turned on, and the water in the water collection tank flows through the first water inlet pipe and the first switch pipe into the first water spray chamber and is sprayed out through the first water spray hole to clean the billboard. Then, the cleaning sponge wipes off the water and dust on the billboard, making the billboard clean more thoroughly.

[0023] 3. During the downward movement of the cleaning plate, the cleaning plate drives the second switch tube to move downward. When the cleaning plate moves to the bottom of the mounting ring groove, the second switch member is opened, and the water in the sump flows into the second water spray chamber through the second water inlet pipe and the second switch tube, and is sprayed out through the second water spray hole to clean the cleaning sponge, so that the cleaning sponge can clean the billboard more thoroughly when it is used to clean the billboard again. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the overall structure of a billboard with a self-cleaning function according to an embodiment of the present invention.

[0025] Figure 2 It is a schematic cross-sectional structural diagram of a fixing frame according to an embodiment of the present invention.

[0026] Figure 3 It is a structural schematic diagram of a cleaning mechanism according to an embodiment of the present invention.

[0027] Figure 4 Schematic diagram of the control mechanism of an embodiment of the present invention.

[0028] Figure 5 2 is a schematic structural diagram of a cleaning plate according to an embodiment of the present invention.

[0029] Figure 6 2 is a schematic structural diagram of a first switch element according to an embodiment of the present invention.

[0030] Figure 7 2 is a schematic structural diagram of a second switch element according to an embodiment of the present invention.

[0031] Figure 8 Schematic diagram of the structure of the extrusion mechanism of the embodiment of the present invention.

[0032] Figure 9 2 is a schematic structural diagram of an abutment plate according to an embodiment of the present invention.

[0033] Figure 10 2 is a schematic structural diagram of a driving board according to an embodiment of the present invention.

[0034] Explanation of reference numerals: 1. fixing frame; 11. billboard; 12. mounting ring groove; 13. water collecting trough; 14. filter screen; 15. mounting groove; 16. first sliding groove; 17. second sliding groove; 2. cleaning mechanism; 20. second spring; 21. cleaning motor; 22. cleaning screw; 23. cleaning guide rod; 24. cleaning plate; 241. cleaning sponge; 242. first water spray chamber; 243. first water spray hole; 244. second water spray chamber; 245. first Second water spray hole; 246, fixed block; 25, first switch tube; 251, first water inlet pipe; 26, second switch tube; 261, second water inlet pipe; 27, transmission shaft; 271, conveyor belt; 272, third gear; 28, second rack; 29, first spring; 3, control mechanism; 31, control guide rod; 32, floating plate; 33, waterproof box; 34, control rod; 341, locking slot; 35, battery; 36, first electric contact; 37, second electric contact; 4 41. First switch member; 42. First switch valve plate; 43. First gear; 44. Drive plate; 45. Gear; 46. Torsion spring; 5. Second switch member; 51. Second switch shaft; 52. Second switch valve plate; 53. Second gear; 54. First rack; 6. Extrusion mechanism; 61. Extrusion guide rod; 62. Extrusion guide plate; 63. Extrusion spring; 64. Extrusion plate; 65. Abutment plate; 651. Water filter hole; 7. Transmission mechanism; 71. , first transmission shaft; 711, first bevel gear; 72, cam; 73, second transmission shaft; 731, second bevel gear; 74, third transmission shaft; 75, fourth gear; 76, fifth gear; 77, sixth gear; 8, locking mechanism; 81, locking spring; 82, locking rod; 821, unlocking slot; 822, third inclined surface; 9, unlocking mechanism; 91, first unlocking rod; 911, first inclined surface; 92, second unlocking rod; 921, second inclined surface. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-10 The present invention is described in further detail.

[0036] The embodiment of the present invention discloses a billboard with a self-cleaning function. Figures 1 to 5The billboard with self-cleaning function includes a fixed frame 1 and a billboard 11 arranged in the fixed frame 1. A mounting ring groove 12 is provided on the inner circumferential surface of the fixed frame 1, and a cleaning mechanism 2 is installed in the mounting ring groove 12. The cleaning mechanism 2 includes a cleaning motor 21 fixedly connected to the inner wall of the mounting ring groove 12, a cleaning screw 22 rotatably installed on the inner wall of the mounting ring groove 12, and a cleaning guide rod 23 fixedly connected to the inner wall of the mounting ring groove 12. The cleaning screw 22 and the cleaning guide rod 23 are respectively located on both sides of the billboard 11 and are parallel to each other. The output shaft of the cleaning motor 21 is fixedly connected to the cleaning screw 22. A cleaning plate 24 is provided on one side of the billboard 11. The cleaning screw 22 and the cleaning guide rod 23 are both inserted into the cleaning plate 24. The cleaning screw 22 is threadedly connected to the cleaning plate 24. A cleaning sponge 241 in contact with the billboard 11 is fixedly connected to the cleaning plate 24. A control mechanism 3 for controlling the opening and closing of the cleaning motor 21 is installed on the top of the fixed frame 1.

[0037] Start the control mechanism 3, which controls the cleaning motor 21 to turn on. The cleaning motor 21 drives the cleaning screw 22 to rotate, and the cleaning screw 22 drives the cleaning plate 24 to move. The cleaning plate 24 drives the cleaning sponge 241 to move. The cleaning sponge 241 can wipe off the dust on the billboard 11, and there is no need for the staff to operate the billboard 11 with handheld cleaning tools, thereby solving the problem of low cleaning efficiency of the billboard 11.

[0038] Reference Figures 2 to 6A water collecting trough 13 is provided on the top of the fixed frame 1. Two outwardly inclined filter screens 14 are fixedly connected to the top of the water collecting trough 13. The two filter screens 14 are fixedly connected. A first water spray chamber 242 is formed at the bottom of the cleaning plate 24. A plurality of first water spray holes 243 communicating with the first water spray chamber 242 are provided on the side wall of the bottom of the cleaning plate 24 facing the billboard 11. The first water spray holes 243 are located below the cleaning sponge 241. A first switch tube 25 is fixedly connected to the top of the cleaning plate 24. The bottom of the first switch tube 25 is communicated with the first water spray chamber 242. The top of the first switch tube 25 is communicated with the bottom of the water collecting trough 13 through the first water inlet pipe 251. The first switch tube 25 is installed with a first valve for controlling the flow of water. A switch member 4; when encountering rainy or snowy weather, water can flow into the sump 13 through the filter 14, the sump 13 collects the water, and when fallen leaves and debris fall on the filter 14, they will slide to the side of the fixed frame 1 along the inclination angle of the filter 14, and will not cause blockage to the filter 14. In the process of cleaning the billboard 11 with the cleaning sponge 241, the first switch member 4 is opened, and the water in the sump 13 enters the first water spray chamber 242 through the first water inlet pipe 251 and the first switch pipe 25, and is sprayed out through the first water spray hole 243 to clean the billboard 11. Then the cleaning sponge 241 wipes off the moisture and dust on the billboard 11, so that the billboard 11 is cleaned more cleanly.

[0039] Reference Figures 2 to 10 The first switch member 4 includes a first switch shaft 41 rotatably mounted in the first switch tube 25, a first switch valve plate 42 fixedly connected to the first switch shaft 41, the first switch shaft 41 extends to the outside of the first switch tube 25, and is fixedly connected to a first gear 43, a driving plate 44 is fixedly connected to the inner walls of the top and bottom of the mounting ring groove 12, a plurality of teeth 45 are hingedly connected to the side wall of the driving plate 44, a hinge shaft installed in the plurality of teeth 45 is located at the top of the teeth 45, a torsion spring 46 is sleeved on the hinge shaft installed in the plurality of teeth 45, and the first gear 43 can mesh with the plurality of teeth 45.

[0040] As the cleaning plate 24 moves downward, it drives the first switch tube 25 downward, which in turn drives the first gear 43 downward. The first gear 43 first engages with the plurality of teeth 45 located at the top. The plurality of teeth 45 drive the first gear 43 to rotate. The first gear 43 drives the first switch shaft 41 to rotate, which in turn drives the first switch valve plate 42 to rotate, causing the first switch valve plate 42 to open and allow water to flow through the first switch tube 25. When the first gear 43 engages with the plurality of teeth 45 located at the bottom, the plurality of teeth 45 continue to drive the first gear 43 to rotate. The first gear 43 drives the first switch valve plate 42 to close the first switch tube 25, stopping the flow of water. As the cleaning plate 24 rises, the plurality of teeth 45 cannot drive the first gear 43 to rotate. The first switch valve plate 42 continues to close the first switch tube 25, preventing water from being sprayed onto the billboard 11, thereby preventing water stains from remaining on the billboard 11.

[0041] Reference Figures 2 to 7 A second water spray chamber 244 is formed on the top of the cleaning plate 24, and a plurality of second water spray holes 245 that are connected to the second water spray chamber 244 are opened on the side wall of the top of the cleaning plate 24 facing the billboard 11. The second water spray holes 245 are located above the cleaning sponge 241. A second switch tube 26 is fixedly connected to the top of the cleaning plate 24, and the bottom of the second switch tube 26 is connected to the second water spray chamber 244. The top of the second switch tube 26 is connected to the bottom of the water collection tank 13 through the second water inlet pipe 261. A second switch tube 26 is installed for The second switch member 5 controls the flow of water; during the downward movement of the cleaning plate 24, the cleaning plate 24 drives the second switch tube 26 to move downward. When the cleaning plate 24 moves to the bottom of the mounting ring groove 12, the second switch member 5 is opened, and the water in the sump 13 enters the second water spray chamber 244 through the second water inlet pipe 261 and the second switch tube 26, and is sprayed out through the second water spray hole 245 to clean the cleaning sponge 241, so that when the cleaning sponge 241 cleans the billboard 11 again, it can clean it more thoroughly.

[0042] Reference Figures 2 to 9The second switch member 5 includes a second switch shaft 51 rotatably mounted in the second switch tube 26. A second switch valve plate 52 is fixedly connected to the second switch shaft 51. The second switch shaft 51 extends to the outside of the second switch tube 26 and is fixedly connected to a second gear 53. A first rack 54 meshing with the second gear 53 is fixedly connected to the inner wall of the bottom of the mounting ring groove 12. When the cleaning plate 24 moves downward, the cleaning plate 24 drives the second switch tube 26 to move downward, and the second switch tube 26 drives the second gear 53 to move downward. When the second gear 53 contacts the first rack 54, the first rack 54 drives the second gear 53 to rotate, and the second gear 53 drives the second switch shaft 51 to rotate. The second switch shaft 51 drives the second switch valve plate 52 to open, and water can flow through the second switch tube 26 to clean the cleaning sponge 241. When the cleaning plate 24 moves upward, the first rack 54 drives the second gear 53 to rotate, and the second switch valve plate 52 can close the second switch tube 26.

[0043] Reference Figures 2 to 10 , a squeezing mechanism 6 is installed on the top of the cleaning plate 24, and the squeezing mechanism 6 includes an squeezing guide rod 61 fixedly connected to the top of the cleaning plate 24, and an squeezing guide plate 62 is provided above the cleaning plate 24, and the squeezing guide rod 61 is passed through the squeezing guide plate 62, and a squeezing spring 63 is fixedly connected between the squeezing guide plate 62 and the cleaning plate 24, and a squeezing plate 64 is fixedly connected to the bottom of the squeezing guide plate 62, and the squeezing plate 64 can contact the cleaning sponge 241, and the squeezing plate 64 is located above the second water spray hole 245, and an abutment plate 65 is fixedly connected to the inner bottom surface of the mounting ring groove 12, and the abutment plate 65 can contact the cleaning sponge 241, and a water filter hole 65 is opened on the abutment plate 65. 1. A drainage hole is provided on the inner bottom surface of the mounting ring groove 12. A transmission mechanism 7 is installed on the cleaning plate 24. The cleaning screw 22 can drive the extrusion guide plate 62 to move through the transmission mechanism 7. When the cleaning plate 24 moves to the bottom of the mounting ring groove 12, the top of the abutment plate 65 contacts the bottom of the cleaning sponge 241, and the second switch valve plate 52 opens. At the same time, the cleaning screw 22 can drive the extrusion guide plate 62 to move through the transmission mechanism 7. The extrusion guide plate 62 drives the extrusion plate 64 to move. The extrusion plate 64 squeezes the cleaning sponge 241 from above, squeezes out the sewage in the cleaning sponge 241, and makes the cleaning sponge 241 clean more thoroughly.

[0044] Reference Figures 2 to 10, a transmission shaft 27 is rotatably installed on the inner top surface of the mounting ring groove 12, a conveyor belt 271 is sleeved on the transmission shaft 27 and the cleaning screw 22, a third gear 272 is fixedly connected to the transmission shaft 27, and a second rack 28 meshing with the third gear 272 is slidably installed on the inner wall of the mounting ring groove 12, a first spring 29 is fixedly connected between the second rack 28 and the inner wall of the mounting ring groove 12, a smooth section is provided at the bottom of the cleaning screw 22, a second spring 20 is fixedly connected to the inner bottom surface of the mounting ring groove 12, and the top of the second spring 20 can abut against the cleaning plate 24; a fixed block 246 is fixedly connected to the top of the cleaning plate 24, and the transmission mechanism 7 includes a first transmission shaft 71 rotatably installed on the fixed block 246, and a first transmission shaft 71 is fixed A cam 72 is fixedly connected, and the cam 72 contacts the extrusion guide plate 62. A second transmission shaft 73 is rotatably installed on the cleaning plate 24. The first transmission shaft 71 is fixedly connected to the first bevel gear 711, and the second transmission shaft 73 is fixedly connected to the second bevel gear 731 which meshes with the first bevel gear 711; a third transmission shaft 74 is rotatably installed on the inner bottom surface of the mounting ring groove 12, and a fourth gear 75 is sleeved on the cleaning screw 22. The fourth gear 75 is slidably connected to the cleaning screw 22, and the fourth gear 75 is rotatably connected to the cleaning plate 24. A fifth gear 76 is fixedly connected to the second transmission shaft 73, and a sixth gear 77 is fixedly connected to the third transmission shaft 74. The sixth gear 77 can mesh with the fourth gear 75 and the fifth gear 76 at the same time.

[0045] When the cleaning motor 21 is started, the cleaning motor 21 drives the cleaning screw 22 to rotate in one direction, and the cleaning screw 22 drives the cleaning plate 24 to move downward, and the cleaning plate 24 drives the fourth gear 75 and the fifth gear 76 to move downward. At the same time, the cleaning screw 22 drives the fourth gear 75 to rotate, and the cleaning screw 22 drives the transmission shaft 27 to rotate through the conveyor belt 271, and the transmission shaft 27 drives the third gear 272 to rotate, and the third gear 272 drives the second rack 28 to move, compressing the second spring 20; when the sixth gear 77 is engaged with the fourth gear 75 and the fifth gear 76 at the same time, the cleaning plate 24 stops moving and abuts against the second spring 20, and the fourth gear 75 drives the sixth gear 77 to rotate, and the sixth gear 77 drives the fifth gear The wheel 76 rotates, the fifth gear 76 drives the second transmission shaft 73 to rotate, the second transmission shaft 73 drives the second bevel gear 731 to rotate, the second bevel gear 731 drives the first bevel gear 711 to rotate, the first bevel gear 711 drives the first transmission shaft 71 to rotate, the first transmission shaft 71 drives the cam 72 to rotate, the cam 72 pushes the extrusion guide plate 62 to move, so that the extrusion plate 64 can squeeze the cleaning sponge 241 multiple times, so that the cleaning sponge 241 is cleaned more thoroughly; when the billboard 11 is cleaned, the cleaning motor 21 is turned off, and the second spring 20 drives the cleaning screw 22 to rotate through the second rack 28, so that the cleaning plate 24 moves upward and returns to the initial position, which is convenient for continued use next time.

[0046] Reference Figure 2 and Figure 3 The control mechanism 3 includes a control guide rod 31 fixedly connected to the bottom surface of the water collection tank 13, a floating plate 32 is placed in the water collection tank 13, the control guide rod 31 is inserted into the floating plate 32, the top of the filter 14 is fixedly connected to the waterproof box 33, and a control rod 34 is vertically provided on the top of the floating plate 32. The control rod 34 passes through the filter 14 and extends into the waterproof box 33. A battery 35 is fixedly connected to the waterproof box 33. The battery 35 is electrically connected to the external solar panel through a wire, and the battery 35 is electrically connected to the cleaning motor 21 through a wire. A first electric contact 36 electrically connected to the cleaning motor 21 through a wire is provided on the top of the control rod 34, and a A second electric shock 37 is electrically connected to the battery 35 through a wire, and the second electric shock 37 is used in conjunction with the first electric shock 36. A locking mechanism 8 for locking the control rod 34 is installed in the water collection tank 13; in the process of collecting rainwater in the water collection tank 13, the float 32 moves upward under the buoyancy of the water flow, and the float 32 drives the control rod 34 to move upward, and the control rod 34 drives the first electric shock 36 to move upward. When the first electric shock 36 contacts the second electric shock 37, the battery 35 energizes the cleaning motor 21, and the billboard 11 can be cleaned. At the same time, the locking mechanism 8 locks the control rod 34, so that the first electric shock 36 and the second electric shock 37 are in continuous contact.

[0047] Reference Figure 3 and Figure 4 , a mounting groove 15 is provided on the inner wall of the top of the water collection tank 13, and the locking mechanism 8 includes a locking spring 81 fixedly connected to the inner wall of the mounting groove 15 and a locking rod 82 placed in the mounting groove 15, the locking spring 81 is fixedly connected to the locking rod 82, and the locking rod 82 abuts against the control rod 34, and a locking groove 341 for inserting the locking rod 82 is provided on the side wall of the control rod 34, and an unlocking mechanism 9 for pulling the locking rod 82 out of the locking groove 341 is installed at the bottom of the water collection tank 13; in the process of the control rod 34 rising, when the locking rod 82 is opposite to the locking groove 341, the locking spring 81 can push the locking rod 82 to insert into the locking groove 341, locking the control rod 34, so that the first electric contact 36 is in continuous contact with the second electric contact 37.

[0048] Reference Figure 3 and Figure 4 , a first sliding groove 16 is provided on the inner wall of the bottom of the water collecting tank 13, and a second sliding groove 17 which is connected to the mounting groove 15 is provided on the inner top surface of the first sliding groove 16. The unlocking mechanism 9 includes a first unlocking rod 91 placed in the first sliding groove 16 and a second unlocking rod 92 placed in the second sliding groove 17. The first unlocking rod 91 extends into the water collecting tank 13 and is formed with a first inclined surface 911. The floating plate 32 can contact the first inclined surface 911. The bottom of the second unlocking rod 92 is formed with a second inclined surface 921. The first unlocking rod 91 contacts the second inclined surface 921. The bottom of the locking rod 82 is provided with an unlocking groove 821 for inserting the second unlocking rod 92. The unlocking groove 821 is formed with a The third inclined surface 822, the second unlocking rod 92 contacts the third inclined surface 822; when the water in the water collection tank 13 is sprayed out through the first water spray hole 243 and the second water spray hole 245, the water level in the water collection tank 13 gradually decreases, and the float 32 moves downward accordingly. When the float 32 contacts the first inclined surface 911, the float 32 pushes the first unlocking rod 91 to move, and the first unlocking rod 91 pushes the second unlocking rod 92 to move through the second inclined surface 921, and the second unlocking rod 92 pushes the locking rod 82 to move through the third inclined surface 822, so that the locking rod 82 is pulled out of the locking groove 341, the control rod 34 moves downward, the first electric contact 36 is separated from the second electric contact 37, and the battery 35 cuts off the power to the cleaning motor 21.

[0049] The implementation principle of a billboard with a self-cleaning function in an embodiment of the present invention is as follows: when encountering rainy or snowy weather, water flows through the filter screen 14 into the water collection tank 13, and the float plate 32 moves upward under the buoyancy of the water flow, and the float plate 32 drives the control rod 34 to move upward, and the control rod 34 drives the first electric contact 36 to move upward. When the first electric contact 36 contacts the second electric contact 37, the battery 35 energizes the cleaning motor 21, and at the same time the locking rod 82 locks the control rod 34, and the cleaning motor 21 drives the cleaning screw 22 to rotate, and the cleaning screw 22 drives the cleaning sponge 241 to wipe off the dust on the billboard 11. In the process of the cleaning plate 24 moving downward, the first switch valve plate 42 opens, and the water in the water collection tank 13 enters the first water inlet pipe 251 and the first switch pipe 25. The water flows into the first water spray chamber 242 and is sprayed out through the first water spray hole 243 to clean the billboard 11, and then the cleaning sponge 241 wipes off the moisture and dust on the billboard 11; when the cleaning plate 24 moves to the bottom of the mounting ring groove 12, the first switch valve plate 42 closes the first switch tube 25, and the second switch valve plate 52 opens. The water in the sump 13 enters the second water spray chamber 244 through the second water inlet pipe 261 and the second switch tube 26, and is sprayed out through the second water spray hole 245 to clean the cleaning sponge 241. At the same time, the cleaning screw 22 drives the first transmission shaft 71 to rotate, and the first transmission shaft 71 drives the cam 72 to rotate. The cam 72 pushes the extrusion plate 64 to squeeze the cleaning sponge 241, so that the cleaning sponge 241 is cleaned more thoroughly.

[0050] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A billboard with a self-cleaning function, comprising a fixed frame (1) and a billboard (11) arranged in the fixed frame (1), characterized in that: A mounting ring groove (12) is provided on the inner circumferential surface of the fixed frame (1), and a cleaning mechanism (2) is installed in the mounting ring groove (12). The cleaning mechanism (2) includes a cleaning motor (21) fixedly connected to the inner wall of the mounting ring groove (12), a cleaning screw (22) rotatably mounted on the inner wall of the mounting ring groove (12), and a cleaning guide rod (23) fixedly connected to the inner wall of the mounting ring groove (12). The cleaning screw (22) and the cleaning guide rod (23) are respectively located on both sides of the billboard (11) and are parallel to each other. The output shaft of the cleaning motor (21) is fixedly connected to the cleaning screw (22); a cleaning plate (24) is provided on one side of the billboard (11); the cleaning screw (22) and the cleaning guide rod (23) are both inserted into the cleaning plate (24); the cleaning screw (22) and the cleaning plate (24) are threadedly connected; a cleaning sponge (241) in contact with the billboard (11) is fixedly connected to the cleaning plate (24); and a control mechanism (3) for controlling the opening and closing of the cleaning motor (21) is installed on the top of the fixed frame (1).

2. The billboard with self-cleaning function according to claim 1, characterized in that: A water collecting trough (13) is provided on the top of the fixed frame (1). Two filter screens (14) arranged to be tilted outward are fixedly connected to the top of the water collecting trough (13). The two filter screens (14) are fixedly connected to each other. A first water spraying cavity (242) is formed on the bottom of the cleaning plate (24). A plurality of first water spraying holes (243) communicating with the first water spraying cavity (242) are provided on the side wall of the bottom of the cleaning plate (24) facing the billboard (11). The first water spraying holes (243) are located below the cleaning sponge (241). A first switch tube (25) is fixedly connected to the top of the cleaning plate (24). The bottom of the first switch tube (25) is communicated with the first water spraying cavity (242). The top of the first switch tube (25) is communicated with the bottom of the water collecting trough (13) through a first water inlet pipe (251). A first switch member (4) for controlling the flow of water is installed in the first switch tube (25).

3. The billboard with self-cleaning function according to claim 2, characterized in that: The first switch member (4) includes a first switch shaft (41) rotatably mounted in the first switch tube (25), a first switch valve plate (42) fixedly connected to the first switch shaft (41), the first switch shaft (41) extending to the outside of the first switch tube (25) and fixedly connected to a first gear (43), and a driving plate (44) fixedly connected to the top and bottom of the mounting ring groove (12); A plurality of teeth (45) are hingedly connected to the side wall of the driving plate (44), and a hinge shaft installed in the plurality of teeth (45) is located at the top of the teeth (45). A torsion spring (46) is sleeved on each of the hinge shafts installed in the plurality of teeth (45), and the first gear (43) can mesh with the plurality of teeth (45).

4. The billboard with self-cleaning function according to claim 2, characterized in that: A second water spray chamber (244) is formed on the top of the cleaning plate (24), and a plurality of second water spray holes (245) are provided on the side wall of the top of the cleaning plate (24) facing the billboard (11), which are communicated with the second water spray chamber (244). The second water spray holes (245) are located above the cleaning sponge (241). A second switch tube (26) is fixedly connected to the top of the cleaning plate (24), and the bottom of the second switch tube (26) is communicated with the second water spray chamber (244). The top of the second switch tube (26) is communicated with the bottom of the water collecting tank (13) through a second water inlet pipe (261). A second switch member (5) for controlling the flow of water is installed in the second switch tube (26).

5. The billboard with self-cleaning function according to claim 4, characterized in that: The second switch member (5) includes a second switch shaft (51) rotatably mounted in the second switch tube (26), a second switch valve plate (52) fixedly connected to the second switch shaft (51), the second switch shaft (51) extending to the outside of the second switch tube (26) and fixedly connected to a second gear (53), and a first rack (54) meshing with the second gear (53) fixedly connected to the inner wall of the bottom of the mounting ring groove (12).

6. The billboard with self-cleaning function according to claim 4, characterized in that: The top of the cleaning plate (24) is provided with an extrusion mechanism (6), the extrusion mechanism (6) comprising an extrusion guide rod (61) fixedly connected to the top of the cleaning plate (24), an extrusion guide plate (62) is provided above the cleaning plate (24), the extrusion guide rod (61) is passed through the extrusion guide plate (62), an extrusion spring (63) is fixedly connected between the extrusion guide plate (62) and the cleaning plate (24), the bottom of the extrusion guide plate (62) is fixedly connected to an extrusion plate (64), and the extrusion plate (64) can be pressed against the cleaning sponge (24) to form a plurality of extrusion springs (63). 41), the extrusion plate (64) is located above the second water spray hole (245), an abutment plate (65) is fixedly connected to the inner bottom surface of the mounting ring groove (12), the abutment plate (65) can contact the cleaning sponge (241), a water filter hole (651) is provided on the abutment plate (65), a drainage hole is provided on the inner bottom surface of the mounting ring groove (12), a transmission mechanism (7) is installed on the cleaning plate (24), and the cleaning screw (22) can drive the extrusion guide plate (62) to move through the transmission mechanism (7).

7. The billboard with self-cleaning function according to claim 6, characterized in that: A transmission shaft (27) is rotatably mounted on the inner top surface of the mounting ring groove (12), a conveyor belt (271) is sleeved on the transmission shaft (27) and the cleaning screw (22), a third gear (272) is fixedly connected to the transmission shaft (27), a second rack (28) meshing with the third gear (272) is slidably mounted on the inner wall of the mounting ring groove (12), a first spring (29) is fixedly connected between the second rack (28) and the inner wall of the mounting ring groove (12), a smooth section is provided at the bottom of the cleaning screw (22), a second spring (20) is fixedly connected to the inner bottom surface of the mounting ring groove (12), and the top of the second spring (20) can abut against the cleaning plate (24); The top of the cleaning plate (24) is fixedly connected to a fixed block (246); the transmission mechanism (7) comprises a first transmission shaft (71) rotatably mounted on the fixed block (246); a cam (72) is fixedly connected to the first transmission shaft (71); the cam (72) contacts the extrusion guide plate (62); a second transmission shaft (73) is rotatably mounted on the cleaning plate (24); a first bevel gear (711) is fixedly connected to the first transmission shaft (71); and a second bevel gear (731) meshing with the first bevel gear (711) is fixedly connected to the second transmission shaft (73); A third transmission shaft (74) is rotatably mounted on the inner bottom surface of the mounting ring groove (12); a fourth gear (75) is sleeved on the cleaning screw (22); the fourth gear (75) is slidably connected to the cleaning screw (22); the fourth gear (75) is rotatably connected to the cleaning plate (24); a fifth gear (76) is fixedly connected to the second transmission shaft (73); a sixth gear (77) is fixedly connected to the third transmission shaft (74); and the sixth gear (77) can be engaged with the fourth gear (75) and the fifth gear (76) at the same time.

8. The billboard with self-cleaning function according to claim 2, characterized in that: The control mechanism (3) includes a control guide rod (31) fixedly connected to the inner bottom surface of the water collecting tank (13), a floating plate (32) is placed in the water collecting tank (13), and the control guide rod (31) is inserted into the floating plate (32). The top of the filter screen (14) is fixedly connected to a waterproof box (33), and a control rod (34) is vertically arranged on the top of the floating plate (32). The control rod (34) passes through the filter screen (14) and extends into the waterproof box (33). A battery (35) is fixedly connected to the waterproof box (33). The battery (35) is electrically connected to an external solar panel via a wire, the battery (35) is electrically connected to a cleaning motor (21) via a wire, a first electric contact (36) is provided on the top of the control rod (34) and is electrically connected to the cleaning motor (21) via a wire, a second electric contact (37) is provided on the inner wall of the waterproof box (33) and is electrically connected to the battery (35) via a wire, the second electric contact (37) is used in conjunction with the first electric contact (36), and a locking mechanism (8) for locking the control rod (34) is installed in the water collecting tank (13).

9. The billboard with self-cleaning function according to claim 8, characterized in that: A mounting groove (15) is provided on the inner wall of the top of the water collecting trough (13), and the locking mechanism (8) includes a locking spring (81) fixedly connected to the inner wall of the mounting groove (15) and a locking rod (82) placed in the mounting groove (15). The locking spring (81) is fixedly connected to the locking rod (82), and the locking rod (82) abuts against the control rod (34). A locking groove (341) for inserting the locking rod (82) is provided on the side wall of the control rod (34), and an unlocking mechanism (9) for pulling the locking rod (82) out of the locking groove (341) is installed at the bottom of the water collecting trough (13).

10. The billboard with self-cleaning function according to claim 9, characterized in that: A first sliding groove (16) is provided on the inner wall of the bottom of the water collecting trough (13), and a second sliding groove (17) is provided on the inner top surface of the first sliding groove (16) and is connected to the mounting groove (15). The unlocking mechanism (9) includes a first unlocking rod (91) placed in the first sliding groove (16) and a second unlocking rod (92) placed in the second sliding groove (17). The first unlocking rod (91) extends into the water collecting trough (13) and is formed with a first inclined surface (911). The floating plate (32) can contact the first inclined surface (911), the bottom of the second unlocking rod (92) is formed with a second inclined surface (921), the first unlocking rod (91) contacts the second inclined surface (921), the bottom of the locking rod (82) is provided with an unlocking groove (821) for the second unlocking rod (92) to be inserted, the unlocking groove (821) is formed with a third inclined surface (822) on the inner wall close to the locking spring (81), and the second unlocking rod (92) contacts the third inclined surface (822).

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