1. The advertising board for the bus station comprises a main body (2) and a supporting column (1), wherein the supporting column (1) is connected with the lower part of the main body (2), and the main body (2) is internally provided with a PLC (programmable logic controller). the advertising board is characterized by further comprising a dust removal mechanism and a rain wiping mechanism, wherein the dust removal mechanism and the rain wiping mechanism are both arranged on the main body (2), and are connected with each other;

the rain wiping mechanism comprises a rain wiping plate (26) and two lifting components, one side of the rain wiping plate (26) is abutted against one side of the main body (2), the two lifting components are respectively connected with two ends of the rain wiping plate (26), the two lifting components are respectively arranged on two sides of the main body (2), and the lifting components are connected with the dust removal mechanism;

the lifting assembly comprises a power unit, an air cylinder (21), a piston (22), an elastic rope (27), a pull rope (23), a connecting rod (25) and a guide unit, wherein the two air cylinders (21) are respectively connected with two sides of the main body (2), the piston (22) is arranged in the air cylinder (21), the piston (22) is connected with the inner wall of the air cylinder (21) in a sealing and sliding manner, the power unit is arranged on the air cylinder (21), the power unit is connected with a dust removal mechanism, one end of the pull rope (23) is connected with the lower part of the piston (22), one side of the air cylinder (21) close to the rain scraper (26) is provided with a round hole, the other end of the pull rope (23) penetrates through the round hole to be connected with one end of the connecting rod (25), the pull rope (23) is connected with the guide unit, the guide unit is arranged on one side of the main body (2) close to the air cylinder (21), grooves are formed in the two sides of the main body (2), one end of each connecting rod (25) is arranged inside each groove, the connecting rods (25) are matched with the grooves, the connecting rods (25) are connected with the grooves in a sliding mode, the other ends of the two connecting rods (25) are connected with the two ends of the wiper blade (26) respectively, the elastic rope (27) is arranged inside each groove, and the two ends of the elastic rope (27) are connected with the other end of each connecting rod (25) and the bottom inside each groove respectively;

the dust removal mechanism comprises a collection box (3), a raindrop sensor (6), an activated carbon filter screen (4), two collection components and a plurality of drain pipes (7), wherein the collection box (3) is arranged above a main body (2), the raindrop sensor (6) is arranged above the collection box (3), the raindrop sensor (6) is electrically connected with a PLC, an opening is arranged above the collection box (3), the collection components are arranged above the collection box (3), the two collection components are respectively arranged on two sides of the opening, the collection components correspond to power units one by one, the collection components are connected with the power units, the activated carbon filter screen (4) is horizontally arranged in the collection box (3), the drain pipes (7) are uniformly arranged below the collection box (3), and the drain pipes (7) are communicated with the interior of the collection box (3), the drain pipe (7) is obliquely arranged, one end of the drain pipe (7) far away from the collecting box (3) is arranged towards one side of the main body (2), a pressure relief valve is arranged in the drain pipe (7), and the pressure relief valve is electrically connected with the PLC;

the collecting assembly comprises a collecting plate (8), a sealing plate (9), a rotating unit and connecting units, the rotating unit is arranged above the collecting box (3), the two connecting units are respectively arranged on two sides of the collecting box (3), the connecting unit is connected with the rotating unit, the connecting unit is connected with a power unit, the rotating unit is connected with one side of the collecting plate (8), and the sealing plate (9) is arranged on one side, close to an opening, of the collecting plate (8).

2. The signboard for a bus station according to claim 1, wherein the power unit comprises a suction pump (19), a first connection tube (20) and a second connection tube (18), the suction pump (19) is provided on an air cylinder (21), the suction pump (19) communicates with the inside of the air cylinder (21) through the first connection tube (20), the suction pump (19) communicates with one end of the second connection tube (18), the other end of the second connection tube (18) is connected with a connection unit, and the suction pump (19) is electrically connected with the PLC.

3. The signboard for a bus stop according to claim 1, wherein the guide unit comprises a guide ring (28) and a fixed pulley (24), the fixed pulley (24) is disposed above one side of the main body (2), an outer ring of the guide ring (28) is connected to an inner wall of the circular hole, the guide ring (28) is fitted over the pulling rope (23), the pulling rope (23) is wound around the fixed pulley (24), the pulling rope (23) is slidably connected to the guide ring (28), and the pulling rope (23) is slidably connected to the fixed pulley (24).

4. The signboard for a bus station according to claim 2, wherein the connection unit comprises two connection boxes (16), a connection board (17), a connection rod (15) and a support board (14), the two connection boxes (16) are respectively connected with two sides of the collection box (3), one end of the second connection tube (18) far away from the suction pump (19) is communicated with the bottom inside the connection boxes (16), the connection board (17) is horizontally arranged inside the connection boxes (16), the connection board (17) is connected with the inner wall of the connection boxes (16) in a sealing and sliding manner, one end of the connection rod (15) is connected with the upper part of the connection board (17), a through hole is arranged above the connection boxes (16), the other end of the connection rod (15) passes through the through hole to be connected with the support board (14), and the support board (14) is connected with the rotation unit.

5. The signboard for a bus stop according to claim 4, wherein the rotation unit comprises a rotation shaft (10), two first bearings, two torsion springs (13) and two transmission units, the first bearings are disposed inside the collecting box (3), both ends of the rotation shaft (10) are connected to inner rings of the two first bearings, respectively, the collecting plate (8) is connected to an outer circumference of the rotation shaft (10), one ends of the two torsion springs (13) are connected to outer rings of the two first bearings, respectively, the other ends of the torsion springs (13) are connected to the rotation shaft (10), the two transmission units are disposed on both ends of the rotation shaft (10), and the two transmission units are connected to both ends of one side of the support plate (14) adjacent to the rotation shaft (10), respectively.

6. The signboard for a bus stop according to claim 5, wherein the driving unit comprises driving discs (11) and driving ropes (12), two driving discs (11) are respectively disposed at both ends of the rotating shaft (10), one end of the driving rope (12) is wound around the driving discs (11), and the other ends of the two driving ropes (12) are respectively connected to both ends of the side of the support plate (14) adjacent to the rotating shaft (10).

7. The signboard for a bus station according to claim 1, wherein the dust removing mechanism further comprises a fixing plate (5), one side of the fixing plate (5) is connected to an inner wall of a side of the collecting box (3) far from the drain pipe (7), and the other side of the fixing plate (5) is connected to a bottom inside the collecting box (3).

Background

The billboard refers to all outdoor media for transmitting advertising information, the size of the media is determined according to the actual environment, and pictures of shop signs, doorheads and outer facades can be made by manual drawing, computer making or printing on paper. The materials of the billboard are generally as follows: square pipe, angle steel, etc. are welded to form, and may have three-dimensional board, lamp cloth, plastic uptake, automobile baking finish, buckle, aluminum-plastic panel, etc.

The existing advertising board is placed outdoors, so that dust is easily covered on the advertising board, and pedestrians and the like cannot clearly observe advertisements.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the billboard for the bus station is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: the advertising board for the bus station comprises a main body and a supporting column, wherein the supporting column is connected with the lower part of the main body, a PLC is arranged in the main body, the advertising board also comprises a dust removal mechanism and a rain wiping mechanism, the dust removal mechanism and the rain wiping mechanism are both arranged on the main body, and the dust removal mechanism is connected with the rain wiping mechanism;

the rain wiping mechanism comprises a rain wiping plate and two lifting components, one side of the rain wiping plate is abutted against one side of the main body, the two lifting components are respectively connected with two ends of the rain wiping plate, the two lifting components are respectively arranged on two sides of the main body, and the lifting components are connected with the dust removal mechanism;

the lifting assembly comprises a power unit, an inflator, a piston, an elastic rope, a pull rope, a connecting rod and a guiding unit, wherein the two inflator are respectively connected with two sides of the main body, the piston is arranged in the inflator, the piston is connected with the inner wall of the inflator in a sealing and sliding manner, the power unit is arranged on the inflator, the power unit is connected with a dust removing mechanism, one end of the pull rope is connected with the lower part of the piston, one side of the inflator close to the wiper blade is provided with a round hole, the other end of the pull rope penetrates through the round hole to be connected with one end of the connecting rod, the pull rope is connected with the guiding unit, the guiding unit is arranged on one side of the main body close to the inflator, two sides of the main body are respectively provided with a groove, one end of the connecting rod is arranged in the groove, the connecting rod is matched with the groove, the other ends of the two connecting rods are respectively connected with two ends of the wiper blade, the elastic rope is arranged inside the groove, and two ends of the elastic rope are respectively connected with the other end of the connecting rod and the bottom in the groove;

the dust removal mechanism comprises a collection box, a raindrop sensor, an active carbon filter screen, two collection components and a plurality of drain pipes, the collecting box is arranged above the main body, the raindrop sensor is arranged above the collecting box, the raindrop sensor is electrically connected with the PLC, an opening is arranged above the collecting box, the collecting components are arranged above the collecting box, the two collecting components are respectively arranged at two sides of the opening, the collecting components correspond to the power units one by one, the collecting components are connected with the power units, the activated carbon filter screen is horizontally arranged in the collecting box, the drain pipes are uniformly arranged below the collecting box and are communicated with the inside of the collecting box, the drain pipe is obliquely arranged, one end of the drain pipe, which is far away from the collecting box, is arranged towards one side of the main body, and a pressure release valve is arranged in the drain pipe and is electrically connected with the PLC;

the collecting assembly comprises a collecting plate, a sealing plate, a rotating unit and a connecting unit, the rotating unit is arranged above the collecting box, the two connecting units are respectively arranged on two sides of the collecting box and are connected with the rotating unit, the connecting unit is connected with the power unit, the rotating unit is connected with one side of the collecting plate, and the sealing plate is arranged on one side, close to an opening, of the collecting plate.

Preferably, in order to realize the function of moving the piston up and down, the power unit comprises a suction pump, a first connecting pipe and a second connecting pipe, the suction pump is arranged on the air cylinder and is communicated with the inside of the air cylinder through the first connecting pipe, the suction pump is communicated with one end of the second connecting pipe, the other end of the second connecting pipe is connected with the connecting unit, and the suction pump is electrically connected with the PLC.

Preferably, in order to change the moving direction of the pulling rope, the guide unit includes a guide ring and a fixed pulley, the fixed pulley is disposed above one side of the main body, an outer ring of the guide ring is connected to an inner wall of the circular hole, the guide ring is sleeved on the pulling rope, the pulling rope is wound on the fixed pulley, the pulling rope is slidably connected to the guide ring, and the pulling rope is slidably connected to the fixed pulley.

Preferably, in order to provide power for the rotation of the collecting plate, the connecting unit comprises connecting boxes, connecting plates, connecting rods and supporting plates, the two connecting boxes are respectively connected with the two sides of the collecting box, one end, far away from the suction pump, of the second connecting pipe is communicated with the bottom in the connecting boxes, the connecting plates are horizontally arranged inside the connecting boxes, the connecting plates are connected with the inner walls of the connecting boxes in a sealing and sliding mode, one ends of the connecting rods are connected with the upper portions of the connecting plates, through holes are formed in the upper portions of the connecting boxes, the other ends of the connecting rods penetrate through the through holes and are connected with the supporting plates, and the supporting plates are connected with the rotating unit.

Preferably, in order to drive the collecting plate to rotate, the rotating unit comprises a rotating shaft, two first bearings, two torsion springs and two transmission units, the first bearings are arranged inside the collecting box, two ends of the rotating shaft are respectively connected with inner rings of the two first bearings, the collecting plate is connected with the periphery of the rotating shaft, one ends of the two torsion springs are respectively connected with outer rings of the two first bearings, the other ends of the torsion springs are connected with the rotating shaft, the two transmission units are respectively arranged at two ends of the rotating shaft, and the two transmission units are respectively connected with two ends of one side, close to the rotating shaft, of the support plate.

Preferably, in order to transmit power, the transmission unit comprises transmission discs and transmission ropes, the two transmission discs are respectively arranged at two ends of the rotating shaft, one end of each transmission rope is wound on the transmission discs, and the other ends of the two transmission ropes are respectively connected with two ends of one side, close to the rotating shaft, of the support plate.

Preferably, in order to facilitate water drainage, the dust removal mechanism further comprises a fixing plate, one side of the fixing plate is connected with the inner wall of the side, far away from the water drainage pipe, of the collection box, and the other side of the fixing plate is connected with the bottom in the collection box.

The invention has the advantages that the purified rainwater can be uniformly sprayed to the main body through the dust removal mechanism, the sprayed water has certain impact force, thereby realizing the function of removing dust at all places of the main body, improving the dust removal effect, preventing dust from covering the main body to influence an observer to check advertisements, avoiding artificial cleaning and consuming urban water sources, improving the environmental protection of equipment, being sprayed to the main body after purifying the rainwater, slowing down the corrosion speed of the main body, prolonging the service life of the main body and having higher practicability, compared with the existing dust removal mechanism, the dust removal mechanism can ensure that the collection plate is in an inclined state when the collection plate does not shield an opening, thereby expanding the range of collecting the rainwater, leading the rainwater falling on the collection plate to slide into the collection box under the self gravity, thereby can collect more rainwater, thereby can promote the effect of dust removal, and when not raining, can drive the collecting plate and rotate to being close to the open-ended direction, make the closing plate move into in the opening, thereby can reduce the windward area of collecting plate, thereby can reduce the probability that the collecting plate is blown down by strong wind, thereby can prolong the life of collecting plate, the practicality is higher, through wiping the rain mechanism, the function of wiping rain has been realized, prevent that the rainwater from leaving water stain in the main part, thereby prevent to influence the advertising effect, the practicality of equipment has been improved, compare with current wiping the rain mechanism, this wiping the rain mechanism and dust removal mechanism link gear as an organic whole, the practicality of driving source has been reduced, the practicality of equipment has been improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the construction of a billboard for bus stops of the invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a side view of a rotating unit of the signboard for a bus stop according to the present invention;

FIG. 4 is a schematic view showing the structure of a wiping mechanism of the signboard for a bus stop according to the present invention;

in the figure: 1. the rain sensor comprises a supporting column, 2, a main body, 3, a collecting box, 4, an activated carbon filter screen, 5, a fixing plate, 6, a rain sensor, 7, a drain pipe, 8, a collecting plate, 9, a sealing plate, 10, a rotating shaft, 11, a transmission disc, 12, a transmission rope, 13, a torsion spring, 14, a support plate, 15, a connecting rod, 16, a connecting box, 17, a connecting plate, 18, a second connecting pipe, 19, a suction pump, 20, a first connecting pipe, 21, an air cylinder, 22, a piston, 23, a pull rope, 24, a fixed pulley, 25, a connecting rod, 26, a rain scraping plate, 27, an elastic rope and 28, and a guide ring.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, the billboard for the bus station comprises a main body 2 and a support column 1, wherein the support column 1 is connected with the lower part of the main body 2, a PLC is arranged in the main body 2, the billboard further comprises a dust removal mechanism and a rain wiping mechanism, the dust removal mechanism and the rain wiping mechanism are both arranged on the main body 2, and the dust removal mechanism is connected with the rain wiping mechanism;

PLCs, i.e., programmable logic controllers, are generally used for the processing of data and the receipt and output of instructions for central control.

This a bill-board for bus station passes through dust removal mechanism, make rainwater after the purification can be even spout to main part 2, and spun water has certain impact force, thereby can realize the function of removing dust for 2 places in main part, the effect of removing dust has been promoted, prevent that the dust from covering in main part 2 and influencing the observer and look over the advertisement, and need not artificial clearance, also need not to consume the urban water source, thereby can improve equipment's feature of environmental protection, just can spout to main part 2 after purifying through the rainwater, thereby can slow down the speed that main part 2 is corroded, thereby can prolong main part 2's life, the practicality is higher, through scraping rain mechanism, the function of scraping rain has been realized, prevent that the rainwater from leaving water stain on main part 2, thereby prevent to influence the advertisement effect, the practicality of equipment has been improved.

As shown in fig. 2 and 4, the wiper mechanism includes a wiper blade 26 and two lifting assemblies, one side of the wiper blade 26 abuts against one side of the main body 2, the two lifting assemblies are respectively connected with two ends of the wiper blade 26, the two lifting assemblies are respectively arranged on two sides of the main body 2, and the lifting assemblies are connected with the dust removing mechanism;

the lifting assembly comprises a power unit, an air cylinder 21, a piston 22, an elastic rope 27, a pulling rope 23, a connecting rod 25 and a guiding unit, wherein the two air cylinders 21 are respectively connected with two sides of the main body 2, the piston 22 is arranged in the air cylinder 21, the piston 22 is in sealed sliding connection with the inner wall of the air cylinder 21, the power unit is arranged on the air cylinder 21 and connected with the air cylinder 21, the power unit is connected with a dust removing mechanism, one end of the pulling rope 23 is connected with the lower part of the piston 22, one side, close to the rain scraping plate 26, of the air cylinder 21 is provided with a round hole, the other end of the pulling rope 23 penetrates through the round hole to be connected with one end of the connecting rod 25, the pulling rope 23 is connected with the guiding unit, the guiding unit is arranged on one side, close to the air cylinder 21, of the main body 2 is provided with grooves on two sides, the connecting rods 25 are matched with the grooves, the connecting rods 25 are connected with the grooves in a sliding mode, the other ends of the two connecting rods 25 are respectively connected with the two ends of the wiper blade 26, the elastic rope 27 is arranged inside the grooves, and the two ends of the elastic rope 27 are respectively connected with the other ends of the connecting rods 25 and the bottoms of the grooves;

when raining, the power unit is controlled to work, the air in the air cylinder 21 is discharged, so that the air pressure in the air cylinder 21 is reduced, the piston 22 moves upwards, the connecting rod 25 can be driven to move upwards through the pull rope 23, the elastic rope 27 is stretched, the rain scraper 26 is driven to move upwards, when the raining is stopped, the power unit is controlled to work, the air is led into the air cylinder 21 again, the piston 22 moves downwards, the rain scraper 26 can be driven to move downwards through the connecting rod 25 under the action of the restoring force of the elastic rope 27, the rainwater remained on the main body 2 can be scraped, so that the water removing function is realized, the rainwater is prevented from leaving water stains on the main body 2, the advertising effect is prevented from being influenced, and the practicability of the device is improved.

As shown in fig. 1-3, the dust removing mechanism comprises a collecting box 3, a raindrop sensor 6, an activated carbon filter screen 4, two collecting components and a plurality of drain pipes 7, wherein the collecting box 3 is arranged above the main body 2, the raindrop sensor 6 is arranged above the collecting box 3, the raindrop sensor 6 is electrically connected with the PLC, an opening is arranged above the collecting box 3, the collecting components are arranged above the collecting box 3, the two collecting components are respectively arranged at two sides of the opening, the collecting components correspond to the power units one by one, the collecting components are connected with the power units, the activated carbon filter screen 4 is horizontally arranged inside the collecting box 3, the drain pipes 7 are uniformly arranged below the collecting box 3, the drain pipes 7 are communicated with the inside of the collecting box 3, the drain pipes 7 are obliquely arranged, one end of the drain pipes 7 far away from the collecting box 3 is arranged towards one side of the main body 2, a pressure release valve is arranged in the drain pipe 7 and is electrically connected with the PLC;

the collecting assembly comprises a collecting plate 8, a sealing plate 9, a rotating unit and a connecting unit, the rotating unit is arranged above the collecting box 3, the two connecting units are respectively arranged on two sides of the collecting box 3 and are connected with the rotating unit, the connecting unit is connected with a power unit, the rotating unit is connected with one side of the collecting plate 8, and the sealing plate 9 is arranged on one side, close to an opening, of the collecting plate 8.

When the raindrop sensor 6 detects rain, the power unit is controlled to work, so that air in the air cylinder 21 can be guided into the connecting unit, the connecting unit works, the rotating unit can be driven to work, the collecting plate 8 can rotate towards the direction far away from the opening, the opening is exposed, rainwater can conveniently enter the inside of the collecting box 3, the function of collecting rainwater is achieved, the rainwater falls on the bottom of the collecting box 3 after impurity removal through the activated carbon filter screen 4, the purified rainwater enters the inside of the drain pipe 7, when the pressure relief value of the pressure relief valve is reached, the pressure relief valve is opened, the purified rainwater can be discharged through the drain pipe 7, the purified rainwater can be uniformly sprayed to the main body 2, the sprayed water has certain impact force, the function of removing dust from all parts of the main body 2 can be achieved, and the dust removing effect is improved, prevent dust from covering the main body 2 to affect the observer to look over the advertisement, and need not to be cleaned manually, and need not consume urban water source, thus can improve the environmental protection of the apparatus, can be sprayed to the main body 2 after purifying the rainwater, thus can slow down the speed of corroding the main body 2, thus can lengthen the service life of the main body 2, the practicability is higher, and when the collecting plate 8 does not shelter from the opening, the collecting plate 8 is in the inclined state, thus can expand the scope of collecting the rainwater, make the rainwater falling on the collecting plate 8 can also slip into the collecting box 3 under its own gravity, thus can collect more rainwater, thus can promote the effect of dust removal, when not raining, the power unit works, can drive the connection unit to work, make the rotation unit work, thus drive the collecting plate 8 to rotate to the direction close to the opening, make the sealing plate 9 move into the opening, thereby can reduce the frontal area of collecting plate 8 to can reduce the probability that collecting plate 8 is blown down by strong wind, thereby can prolong collecting plate 8's life, the practicality is higher.

Preferably, in order to perform the function of moving the piston 22 up and down, the power unit includes a suction pump 19, a first connection pipe 20 and a second connection pipe 18, the suction pump 19 is disposed on the air cylinder 21, the suction pump 19 communicates with the inside of the air cylinder 21 through the first connection pipe 20, the suction pump 19 communicates with one end of the second connection pipe 18, the other end of the second connection pipe 18 is connected to the connection unit, and the suction pump 19 is electrically connected to the PLC.

When the raindrop sensor 6 detects raining, the suction pump 19 is controlled to start, air in the air cylinder 21 is guided into the second connecting pipe 18 through the first connecting pipe 20, so that air pressure in the air cylinder 21 is reduced, the piston 22 moves upwards, the connecting rod 25 can be driven to move upwards through the pull rope 23, the rain scraping plate 26 is driven to move upwards, when the raining is stopped, the suction pump 19 is controlled to start, air in the second connecting pipe 18 is sucked into the first connecting pipe 20 and then guided into the air cylinder 21, the piston 22 moves downwards, and under the action of restoring force of the elastic rope 27, the rain scraping plate 26 can be driven to move downwards through the connecting rod 25, so that rain remaining on the main body 2 can be scraped, a water removing function is achieved, rain is prevented from leaving water stains on the main body 2, the advertising effect is prevented from being influenced, and the practicability of the device is improved.

Preferably, in order to change the moving direction of the pulling rope 23, the guide unit includes a guide ring 28 and a fixed pulley 24, the fixed pulley 24 is disposed above one side of the main body 2, an outer ring of the guide ring 28 is connected to an inner wall of the circular hole, the guide ring 28 is fitted over the pulling rope 23, the pulling rope 23 is wound around the fixed pulley 24, the pulling rope 23 is slidably connected to the guide ring 28, and the pulling rope 23 is slidably connected to the fixed pulley 24.

Through the guide ring 28 and the fixed pulley 24, the moving direction of the pull rope 23 can be changed, the function of guiding is realized, when the piston 22 moves upwards, the connecting rod 25 can be driven to move upwards, and therefore the practicability of the device is improved.

Preferably, in order to provide power for the rotation of the collecting plate 8, the connecting unit comprises connecting boxes 16, connecting plates 17, connecting rods 15 and support plates 14, the two connecting boxes 16 are respectively connected with two sides of the collecting box 3, one end of the second connecting pipe 18, which is far away from the suction pump 19, is communicated with the bottom in the connecting boxes 16, the connecting plates 17 are horizontally arranged in the connecting boxes 16, the connecting plates 17 are connected with the inner walls of the connecting boxes 16 in a sealing and sliding manner, one end of the connecting rods 15 is connected with the upper portion of the connecting plates 17, through holes are formed in the upper portion of the connecting boxes 16, the other end of the connecting rods 15 penetrates through the through holes to be connected with the support plates 14, and the support plates 14 are connected with the rotating unit.

Preferably, in order to drive the collecting plate 8 to rotate, the rotating unit includes a rotating shaft 10, two first bearings, two torsion springs 13 and two transmission units, the first bearings are disposed inside the collecting box 3, two ends of the rotating shaft 10 are respectively connected with inner rings of the two first bearings, the collecting plate 8 is connected with the periphery of the rotating shaft 10, one ends of the two torsion springs 13 are respectively connected with outer rings of the two first bearings, the other ends of the torsion springs 13 are connected with the rotating shaft 10, the two transmission units are respectively disposed at two ends of the rotating shaft 10, and the two transmission units are respectively connected with two ends of one side, close to the rotating shaft 10, of the supporting plate 14.

Preferably, in order to transmit power, the transmission unit includes transmission discs 11 and transmission ropes 12, the two transmission discs 11 are respectively disposed at two ends of the rotating shaft 10, one end of the transmission rope 12 is wound on the transmission discs 11, and the other ends of the two transmission ropes 12 are respectively connected with two ends of one side of the support plate 14 close to the rotating shaft 10.

When raining, the suction pump 19 works, so that air in the air cylinder 21 can be guided into the inside of the connecting box 16, so that the connecting plate 17 moves upwards, the supporting plate 14 is driven to move upwards through the connecting rod 15, the driving disc 11 is driven to rotate through the driving rope 12, the rotating shaft 10 rotates, the torsion spring 13 deforms, the collecting plate 8 can rotate towards the direction away from the opening, the opening is exposed, rainwater can enter the inside of the collecting box 3 conveniently, the function of collecting rainwater is achieved, meanwhile, the collecting plate 8 is in an inclined state, the range of collecting rainwater can be enlarged, rainwater falling on the collecting plate 8 can slide into the inside of the collecting box 3 under the gravity of the rainwater, more rainwater can be collected, and the dust removal effect can be improved.

Preferably, in order to facilitate water drainage, the dust removing mechanism further comprises a fixing plate 5, one side of the fixing plate 5 is connected with the inner wall of the side of the collecting box 3 far away from the water drainage pipe 7, and the other side of the fixing plate 5 is connected with the bottom in the collecting box 3.

Through the fixed plate 5 who sets up, and fixed plate 5 is the slope setting, and the rainwater of being convenient for is discharged from drain pipe 7 along the inclined plane of fixed plate 5, makes the rainwater can not gather the bottom in collecting box 3 simultaneously for the rainwater can be abundant discharge from drain pipe 7, thereby prevents to cause the waste of rainwater, has improved the practicality of equipment.

When raining, the power unit is controlled to work, the air in the air cylinder 21 is discharged, so that the air pressure in the air cylinder 21 is reduced, the piston 22 moves upwards, the connecting rod 25 can be driven to move upwards through the pull rope 23, the elastic rope 27 is stretched, the rain scraper 26 is driven to move upwards, when the raining is stopped, the power unit is controlled to work, the air is led into the air cylinder 21 again, the piston 22 moves downwards, the rain scraper 26 can be driven to move downwards through the connecting rod 25 under the action of the restoring force of the elastic rope 27, the rainwater remained on the main body 2 can be scraped, so that the water removing function is realized, the rainwater is prevented from leaving water stains on the main body 2, the advertising effect is prevented from being influenced, and the practicability of the device is improved. When the raindrop sensor 6 detects rain, the power unit is controlled to work, so that air in the air cylinder 21 can be guided into the connecting unit, the connecting unit works, the rotating unit can be driven to work, the collecting plate 8 can rotate towards the direction far away from the opening, the opening is exposed, rainwater can conveniently enter the inside of the collecting box 3, the function of collecting rainwater is achieved, the rainwater falls on the bottom of the collecting box 3 after impurity removal through the activated carbon filter screen 4, the purified rainwater enters the inside of the drain pipe 7, when the pressure relief value of the pressure relief valve is reached, the pressure relief valve is opened, the purified rainwater can be discharged through the drain pipe 7, the purified rainwater can be uniformly sprayed to the main body 2, the sprayed water has certain impact force, the function of removing dust from all parts of the main body 2 can be achieved, and the dust removing effect is improved, prevent that the dust from covering in main part 2 and influencing the observer and look over the advertisement, and need not artificial clearance, also need not to consume urban water source, thereby can improve equipment's feature of environmental protection, just can spout to main part 2 after purifying the rainwater, thereby can slow down the speed that main part 2 is corroded, thereby can prolong main part 2's life, the practicality is higher, and when collecting plate 8 does not shelter from the opening, collecting plate 8 is in the state of slope, thereby can enlarge the scope of collecting the rainwater, make the rainwater that falls on collecting plate 8 also can slide into the inside of collecting box 3 under self gravity, thereby can collect more rainwater, thereby can promote the effect of removing dust.

Compared with the prior art, the billboard for the bus station has the advantages that the purified rainwater can be uniformly sprayed to the main body 2 through the dust removing mechanism, the sprayed water has certain impact force, so that the function of removing dust of all parts of the main body 2 can be realized, the dust removing effect is improved, the dust is prevented from covering the main body 2 to influence an observer to check the advertisement, manual cleaning is not needed, urban water sources are not consumed, the environmental protection of the equipment can be improved, the rainwater can be sprayed to the main body 2 after being purified, the corrosion speed of the main body 2 can be reduced, the service life of the main body 2 can be prolonged, the practicability is higher, compared with the existing dust removing mechanism, the dust removing mechanism can enlarge the range of collecting rainwater when the collecting plate 8 does not shield the opening, so that the rainwater falling on the collecting plate 8 can slide into the collecting box 3 under the self gravity, thereby can collect more rainwater, thereby can promote the effect of dust removal, and when not raining, can drive collecting plate 8 and rotate to being close to the open-ended direction, make closing plate 9 move into in the opening, thereby can reduce the windward area of collecting plate 8, thereby can reduce the probability that collecting plate 8 is blown down by strong wind, thereby can prolong the life of collecting plate 8, therefore, the practicality is higher, through wiping the rain mechanism, the function of wiping rain has been realized, prevent that the rainwater from leaving water stain on main part 2, thereby prevent to influence the advertising effect, the practicality of equipment has been improved, compare with current wiping the rain mechanism, this wiping the rain mechanism and dust removal mechanism link gear as an organic whole, the practicality of driving source has been reduced, the practicality of equipment has been improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.