Propaganda device for wisdom education

Abstract

The invention relates to the technical field of wisdom education, in particular to a propaganda device for wisdom education. The propaganda device for intelligent education can effectively prevent rainwater from entering the propaganda column to damage propaganda paper. The propaganda device for intelligent education comprises bases, a propaganda column, a rain curtain, a propaganda board and a limiting mechanism, the number of the bases is two, the propaganda column is slidably connected between the bases, the propaganda board is connected between the left side and the right side of the propaganda column, the rain curtain is connected to the top of the propaganda column, and the limiting mechanism is arranged on the upper side of the propaganda board. By folding the shielding plate, the wedge-shaped frame at the bottom of the shielding plate and the limiting plate at the bottom of the placing plate are clamped, so that a gap between the shielding plate and the placing plate caused by movement of the shielding plate is prevented.

Description

Technical Field

[0001] This invention relates to the field of smart education technology, and in particular to a smart education publicity device. Background Technology

[0002] Educational propaganda devices are commonly found on school campuses. They are educational bulletin boards set up throughout the campus, where papers with various educational slogans, heroic deeds, and other content are posted to achieve the purpose of publicity and education.

[0003] Patent publication number CN210295536U discloses a smart educational advertising device, including a device base, casters, and a lower support. The casters are fixedly installed at the bottom of the device base. The invention has a compact structure, is easy to use, and is functional. The movable plate is attracted to the fixed plate by magnetic stickers embedded in the back. The advertising slots installed on the movable plate are all made of PVC material, which facilitates viewing and changing the educational content in the advertising slots. A sunshade is fixedly installed on the top of the device to prevent rainwater from entering and wetting the content on the advertising plate, and also to provide shade.

[0004] The aforementioned advertising device uses a sunshade fixed above the device to prevent rainwater from entering and wetting the content on the advertising board. However, when it rains, the sunshade has a limited protective area, and rainwater can easily fall onto the advertising board, causing the paper items posted on the board to become damp and damaged. Therefore, a smart educational advertising device that can prevent rainwater from entering the advertising board and damaging the advertising paper is now being developed. Summary of the Invention

[0005] In order to overcome the shortcomings of existing smart education publicity devices that are not waterproof, this invention provides a smart education publicity device that can effectively prevent rainwater from entering the publicity board and damaging the publicity paper.

[0006] A smart education publicity device includes:

[0007] The product consists of two bases connected by a sliding display panel.

[0008] The bulletin board is connected between the left and right sides of the bulletin board.

[0009] Rain curtain: A rain curtain is attached to the top of the bulletin board;

[0010] A limiting mechanism is provided on the upper side of the promotional board;

[0011] A shielding mechanism is installed on the front side of the bulletin board.

[0012] In one embodiment, the limiting mechanism includes:

[0013] Fixed rods are attached to the upper part of both the left and right sides of the advertising board;

[0014] The baffle plate is rotatably connected to the fixing rod;

[0015] The handle is located at the bottom center of the cover.

[0016] Support frames are connected to both the left and right sides of the bottom of the shielding plate;

[0017] The wedge-shaped frame and the support frame are both slidably connected to the rear side;

[0018] The first telescopic spring is connected between the support frame and the corresponding wedge frame, and the first telescopic spring is wound around the wedge frame.

[0019] Limiting plates are connected to the bottom left and right sides of the advertising board, and the limiting plates are in contact with the adjacent wedge-shaped frame on the same side.

[0020] In one embodiment, the blocking mechanism includes:

[0021] The motor is installed on the lower right side of the front of the bulletin board.

[0022] A humidity sensor is installed on the lower right side of the front of the bulletin board. The humidity sensor is located above the motor and is electrically connected to the motor.

[0023] A roller is rotatably connected to the front left side of the bulletin board;

[0024] A covering cloth is wrapped around a roller. When the covering cloth is unfolded to the right, it blocks the front side of the advertising board.

[0025] The transmission assembly is connected between the lower part of the roller shaft and the output shaft of the motor. The transmission assembly consists of two pulleys and a belt.

[0026] The pull frame is connected to the left side of the belt of the transmission component, and the left side of the pull frame is connected to the right side of the shielding cloth.

[0027] In one embodiment, the protective mechanism includes:

[0028] The connecting frame and the baffle plate are connected in a rotating manner from top to bottom on both sides;

[0029] Torsion springs are connected between the lower side of the connecting frame and the baffle plate;

[0030] The first shielding frame is rotatably connected to the upper side of the connecting frame, and the rear side of the first shielding frame contacts the front side of the shielding plate.

[0031] The outer ends of the extrusion plate and the fixing rod are both connected to the extrusion plate. When the first shielding frame swings forward and upward, it contacts the extrusion plate.

[0032] The second shield is rotatably connected between the fixed rods. The top of the first shield is in contact with the bottom of the second shield. The first shield swings upward, causing the second shield to rotate upward.

[0033] In one embodiment, the lifting mechanism includes:

[0034] The first fixing frame is connected to the lower right side of the base on the right side;

[0035] A lead screw is threadedly connected to the lower right side of the front of the bulletin board. The top of the lead screw is rotatably connected to the upper side of the first fixed frame, and the bottom of the lead screw is rotatably connected to the lower side of the base.

[0036] A spur gear is connected to the lower side of the lead screw;

[0037] Missing gear: The bottom of the motor output shaft is connected to a missing gear, which meshes with a spur gear.

[0038] The guide frame is connected to the lower left side of the base on the left side, and the left side of the bulletin board is slidably connected to the guide frame.

[0039] In one embodiment, the wiping mechanism includes:

[0040] The second fixing frame is connected to the bottom left side of the rain curtain;

[0041] The scraping frame and the second fixed frame are slidably connected to the scraping frame on both the front and rear sides. The inner side of the scraping frame contacts the cloth, and when the cover cloth is unfolded to the right, it passes between the inner sides of the two scraping frames.

[0042] The second telescopic spring and the scraper are each connected to the second fixed frame by three second telescopic springs.

[0043] In one embodiment, the flow guiding mechanism includes:

[0044] A flow guide frame is rotatably connected between the left and right sides of the upper part of the bulletin board;

[0045] The third fixing frame is connected to the front and rear sides of the top of the flow guide frame;

[0046] Telescopic components are connected to both the left and right sides of the upper part of the third fixed frame;

[0047] Limiting frames are connected to the middle of the front and rear sides of the top of the rain curtain. The telescopic component moves upward and gets into the limiting frame on the same side.

[0048] In one embodiment, the base is a truncated pyramid, which increases the contact area between the bulletin board and the ground, making the bulletin board less likely to tip over.

[0049] The beneficial effects are: 1. By closing the cover plate, the wedge-shaped frame at the bottom of the cover plate is locked with the limiting plate at the bottom of the placement plate, preventing the cover plate from moving and causing gaps between the cover plate and the placement plate, thus preventing rainwater from entering the bulletin board through the gaps. When it rains, the motor starts, and the motor output shaft drives the transmission component to rotate counterclockwise, thereby driving the pulling frame to move to the right and driving the roller to rotate, thereby driving the cover cloth to open completely to the right, covering the bulletin board to prevent rainwater from entering.

[0050] 2. The present invention uses a first shielding frame and a second shielding frame to shield the front and top sides of the shielding plate, thereby enhancing the sealing of the joint and preventing rainwater from entering the bulletin board.

[0051] 3. This invention uses a motor to drive a spur gear to rotate, which in turn drives a lead screw to rotate, thereby lifting the bulletin board away from the damp ground and preventing water from splashing onto the bulletin board or reducing moisture entering the bulletin board.

[0052] 4. The present invention uses a scraping frame to wipe the retracted cover cloth to prevent the cover cloth from carrying stains when it is put away.

[0053] 5. By adjusting the tilt direction of the guide frame, the telescopic components on the front or rear side of the guide frame and the corresponding limiting frame are locked in place, thereby guiding rainwater in all directions and reducing direct contact between rainwater and the surface. Attached Figure Description

[0054] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0055] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0056] Figure 3 This is a schematic diagram of the first three-dimensional structure of the limiting mechanism of the present invention.

[0057] Figure 4 This is a schematic diagram of a second partial cross-sectional three-dimensional structure of the limiting mechanism of the present invention.

[0058] Figure 5 This is a schematic diagram of the first three-dimensional structure of the shielding mechanism of the present invention.

[0059] Figure 6 This is a schematic diagram of a second three-dimensional structure of the shielding mechanism of the present invention.

[0060] Figure 7 This is a schematic diagram of the first three-dimensional structure of the protective mechanism of the present invention.

[0061] Figure 8 This is a schematic diagram of a second three-dimensional structure of the protective mechanism of the present invention.

[0062] Figure 9 This is a schematic diagram of the third three-dimensional structure of the protective mechanism of the present invention.

[0063] Figure 10 This is a schematic diagram of the first three-dimensional structure of the lifting mechanism of the present invention.

[0064] Figure 11 This is a schematic diagram of a second three-dimensional structure of the lifting mechanism of the present invention.

[0065] Figure 12 This is a schematic diagram of the first three-dimensional structure of the wiping mechanism of the present invention.

[0066] Figure 13 This is a schematic diagram of a second three-dimensional structure of the wiping mechanism of the present invention.

[0067] Figure 14 This is a schematic diagram of the first three-dimensional structure of the flow guiding mechanism of the present invention.

[0068] Figure 15 This is a schematic diagram of a second three-dimensional structure of the flow guiding mechanism of the present invention.

[0069] Figure 16 This is a three-dimensional structural diagram of the base and bulletin board of the present invention.

[0070] In the attached diagram, the following are the reference numerals: 1. Base; 11. Bulletin board; 12. Rain curtain; 13. Bulletin board; 2. Limiting mechanism; 21. Covering plate; 22. Handle; 23. Support frame; 24. Limiting plate; 25. Wedge frame; 26. First telescopic spring; 27. Fixing rod; 3. Covering mechanism; 31. Motor; 32. Transmission assembly; 33. Roller; 34. Covering cloth; 35. Pulling frame; 36. Humidity sensor; 4. Protective mechanism; 41. 42. First shielding frame, 43. Connecting frame, 44. Torsion spring, 45. Extrusion plate, 46. Second shielding frame, 57. Lifting mechanism, 51. Lead screw, 52. First fixed frame, 53. Gear, 54. Spur gear, 55. Guide frame, 68. Wiping mechanism, 61. Second fixed frame, 62. Scraping frame, 63. Second telescopic spring, 79. Flow guiding mechanism, 71. Flow guiding frame, 72. Third fixed frame, 73. Telescopic component, 74. Limiting frame. Detailed Implementation

[0071] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0072] Example 1

[0073] A smart education promotional device, such as Figure 1 , Figure 2 and Figure 16 As shown, it includes a base 1, a bulletin board 11, a rain curtain 12, a publicity board 13, a limiting mechanism 2, and a shielding mechanism 3. There are two bases 1, and the bulletin board 11 is slidably connected between the bases 1. The publicity board 13 is connected between the left and right sides of the bulletin board 11. The rain curtain 12 is connected to the top of the bulletin board 11. The limiting mechanism 2 is provided on the upper side of the publicity board 13, and the shielding mechanism 3 is provided on the front side of the bulletin board 11.

[0074] like Figure 1 , Figure 3 and Figure 4 As shown, the limiting mechanism 2 includes a baffle plate 21, a handle 22, a support frame 23, a limiting plate 24, a wedge frame 25, a first telescopic spring 26, and a fixing rod 27. The upper parts of the left and right sides of the advertising board 13 are connected to the fixing rods 27, and the baffle plate 21 is rotatably connected between the fixing rods 27. The handle 22 is connected to the middle of the bottom of the baffle plate 21. The left and right sides of the bottom of the baffle plate 21 are connected to the support frame 23, and the wedge frame 25 is slidably connected to the rear side of the support frame 23. The first telescopic spring 26 is connected between the support frame 23 and the corresponding wedge frame 25. The first telescopic spring 26 is wrapped around the wedge frame 25. The left and right sides of the bottom of the advertising board 13 are connected to the limiting plate 24, and the limiting plate 24 is in contact with the adjacent wedge frame 25 on the same side.

[0075] like Figure 1 , Figure 5 and Figure 6 As shown, the shielding mechanism 3 includes a motor 31, a transmission assembly 32, a roller 33, a shielding cloth 34, a pulling frame 35, and a humidity sensor 36. The motor 31 is installed on the lower right side of the front of the bulletin board 11, and the humidity sensor 36 is installed on the lower right side of the front of the bulletin board 11. The humidity sensor 36 is located above the motor 31 and is electrically connected to the motor 31. The roller 33 is rotatably connected to the left side of the front of the bulletin board 11. The shielding cloth 34 is wound around the roller 33. After the shielding cloth 34 is unfolded to the right, it blocks the front of the bulletin board 13. The lower part of the roller 33 is connected to the output shaft of the motor 31 by the transmission assembly 32. The transmission assembly 32 consists of two pulleys and a belt. The left side of the belt of the transmission assembly 32 is connected to the pulling frame 35, and the left side of the pulling frame 35 is connected to the right side of the shielding cloth 34.

[0076] When people need to affix promotional paper to the promotional board 13, firstly, pull the two wedge-shaped frames 25 inwards so that the left and right limiting plates 24 no longer limit the wedge-shaped frames 25, compressing the first telescopic spring 26. Then, grasp the handle 22 and pull it forward and upward, thereby rotating the cover plate 21 and opening it. At this time, release the wedge-shaped frames 25, and the first telescopic spring 26 returns to its original position, causing the wedge-shaped frames 25 to return to their original position. Affix the promotional paper to the promotional board 13. Then, close the cover plate 21 downwards. The inclined surface of the wedge-shaped frames 25 presses against the limiting plates 24, causing both the left and right wedge-shaped frames 25 to move inwards, thus compressing the first telescopic spring 26. When the wedge-shaped frames 25 move to the rear of the limiting plates 24 and no longer press against them, the first telescopic spring 26 returns to its original position, causing the wedge-shaped frames 25 to return to their original position. Thus, the limiting plates 24 limit the wedge-shaped frames 25, preventing the cover plate 21 from moving and creating gaps after it is closed, thereby reducing rainwater entering the promotional board. 13. When it rains, the humidity sensor 36 senses that the air humidity has reached the preset value, causing the motor 31 to start. The output shaft of the motor 31 drives the transmission component 32 to rotate counterclockwise, thereby moving the pulling frame 35 to the right and driving the roller shaft 33 to rotate, thus causing the covering cloth 34 to open to the right. When the pulling frame 35 moves to the right side of the transmission component 32, the motor 31 is turned off, the transmission component 32 stops rotating, and the covering cloth 34 is fully opened, further reducing the amount of rainwater entering the advertising board 13. When the rain stops, the humidity sensor 36 senses that the air humidity is lower than the preset value, the motor 31 starts, and the output shaft of the motor 31 drives the transmission component 32 to start rotating clockwise, thereby moving the pulling frame 35 to the left and driving the roller shaft 33 to rotate in the opposite direction, thus causing the covering cloth 34 to retract to the left. When the pulling frame 35 moves back to the left side of the transmission component 32, the motor 31 is turned off, the transmission component 32 stops rotating, and the covering cloth 34 is fully retracted.

[0077] Example 2

[0078] Based on Example 1, such as Figure 1 , Figure 7 , Figure 8 and Figure 9As shown, it also includes a protective mechanism 4, which includes a first shielding frame 41, a connecting frame 42, a torsion spring 43, a pressing plate 44, and a second shielding frame 45. Three connecting frames 42 are rotatably connected from top to bottom on both sides of the shielding plate 21. A torsion spring 43 is connected between the lower side of the connecting frame 42 and the shielding plate 21. The first shielding frame 41 is rotatably connected between the upper sides of the connecting frames 42. The rear side of the first shielding frame 41 contacts the front side of the shielding plate 21. The pressing plate 44 is connected to the outer end of the fixing rod 27. When the first shielding frame 41 swings forward and upward, it contacts the pressing plate 44. The second shielding frame 45 is rotatably connected between the fixing rods 27. The top of the first shielding frame 41 contacts the bottom of the second shielding frame 45. The first shielding frame 41 swings upward, causing the second shielding frame 45 to rotate upward.

[0079] The first shielding frame 41 can work with the shielding plate 21 to provide double-layer shielding. When water or dust gets between the first shielding frame 41 and the shielding plate 21, causing it to become dirty, the handle 22 can be pulled upwards to open the shielding plate 21. At this time, the shielding plate 21 drives the first shielding frame 41 to open upwards, thereby squeezing the second shielding frame 45 to rotate upwards. When the upper side of the first shielding frame 41 contacts the squeezing plate 44, as the shielding plate 21 continues to move upwards, the first shielding frame 41 moves forward and downwards under the action of the squeezing plate 44, thereby driving the connecting frame 42 to rotate, thus causing the torsion spring 43 to twist. The first shielding frame 41 and the shielding plate 21 are connected by the left and right sides. When the frame 42 is opened, the space between the first shielding frame 41 and the shielding plate 21 can be cleaned to make the advertising paper clearer. After cleaning, pull the handle 22 downward to close the shielding plate 21. The squeezing plate 44 no longer squeezes the top of the first shielding frame 41, the torsion spring 43 returns to its original shape, and drives the connecting frame 42 to rotate in the opposite direction, thereby causing the first shielding frame 41 to reset and close again with the shielding plate 21. The first shielding frame 41 closes downward with the shielding plate 21 and no longer squeezes the second shielding frame 45. The second shielding frame 45 resets and covers the gap between the top of the first shielding frame 41 and the shielding plate 21 to prevent rainwater from entering the gap.

[0080] like Figure 1 , Figure 10 and Figure 11As shown, it also includes a lifting mechanism 5, which includes a lead screw 51, a first fixed frame 52, a missing gear 53, a spur gear 54, and a guide frame 55. The lower right side of the base 1 on the right side is connected to the first fixed frame 52. The base 1 is a quadrangular truncated pyramid, which increases the contact area between the bulletin board 11 and the ground, thereby making the bulletin board less likely to tip over. The lower right front side of the bulletin board 11 is threadedly connected to the lead screw 51. The top of the lead screw 51 is rotatably connected to the upper side of the first fixed frame 52, and the bottom of the lead screw 51 is rotatably connected to the lower side of the base 1. The lower side of the lead screw 51 is connected to the spur gear 54. The bottom of the output shaft of the motor 31 is connected to the missing gear 53, which meshes with the spur gear 54. The lower left side of the base 1 on the left side is connected to the guide frame 55, and the left side of the bulletin board 11 is slidably connected to the guide frame 55.

[0081] When it rains, the humidity sensor 36 senses that the air humidity has reached a preset value, causing the motor 31 to start. The output shaft of the motor 31 drives the misaligned gear 53 to rotate counterclockwise, which in turn drives the spur gear 54 to rotate intermittently, thereby causing the lead screw 51 to rotate intermittently, thus moving the bulletin board 11 upward. When the cover 34 is fully open, the motor 31 is turned off, and the bulletin board 11 is moved away from the ground to prevent water from splashing onto the bulletin board 11 or to reduce moisture entering the bulletin board 11. When the rain stops, the motor 31 starts again, and the output shaft of the motor 31 drives the misaligned gear 53 to rotate clockwise, which in turn drives the spur gear 54 to rotate in the opposite direction, thereby causing the lead screw 51 to rotate in the opposite direction, thus moving the bulletin board 11 downward. When the cover 34 is fully retracted, the motor 31 is turned off, and the bulletin board 11 returns to its normal height.

[0082] like Figure 1 , Figure 12 and Figure 13 As shown, it also includes a wiping mechanism 6, which includes a second fixed frame 61, a scraping frame 62, and a second telescopic spring 63. The second fixed frame 61 is connected to the bottom left side of the rain curtain 12. The scraping frame 62 is slidably connected to both the front and rear sides of the second fixed frame 61. The inner side of the scraping frame 62 contacts the rain curtain 34. When the rain curtain 34 is unfolded to the right, it passes between the inner sides of the two scraping frames 62. Three second telescopic springs 63 are connected between the scraping frame 62 and the second fixed frame 61.

[0083] When the cover cloth 34 is opened to the right, it passes between the inner sides of the two scraping frames 62. After the rain stops, the transmission component 32 drives the pulling frame 35 to move to the left, thereby moving the cover cloth 34 to the left. When the cover cloth 34 is retracted to the left, the scraping frames 62 on the front and back sides of the cover cloth 34 wipe the front and back sides of the cover cloth 34 to prevent the cover cloth 34 from carrying dirt when it is retracted.

[0084] like Figure 1 , Figure 14 and Figure 15As shown, it also includes a flow guiding mechanism 7, which includes a flow guiding frame 71, a third fixed frame 72, a telescopic component 73, and a limiting frame 74. The flow guiding frame 71 is rotatably connected between the upper left and right sides of the bulletin board 11. The third fixed frame 72 is connected to the front and rear sides of the top of the flow guiding frame 71. The telescopic component 73 is connected to the upper left and right sides of the third fixed frame 72. The limiting frame 74 is connected to the middle of the front and rear sides of the top of the rain curtain 12. The telescopic component 73 moves upward and gets into the limiting frame 74 on the same side.

[0085] When it rains, the wind causes rainwater to fall at an angle. If the rainwater falls from front to back, the front of the deflector 71 can be rotated downwards. At this time, the rear of the deflector 71 rotates upwards, thereby driving the third fixed frame 72 on the rear side to move upwards. This, in turn, drives the telescopic component 73 on the rear side to move upwards. When the telescopic component 73 on the rear side contacts the limiting frame 74 on the rear side of the rain curtain 12, the telescopic component 73 retracts inwards. The telescopic component 73 continues to move upwards, and the two sides of the telescopic component 73 reset and lock the limiting frame 74, so that the deflector 71... The forward tilting mechanism can block rainwater falling from front to back and allow it to flow down from the front of the guide frame 71. If the rainwater falls from back to front, the rear of the guide frame 71 can be rotated downwards, at which point the front of the guide frame 71 rotates upwards. Repeating the above process, the telescopic component 73 on the front of the guide frame 71 engages with the limiting frame 74 on the front of the rain curtain 12, causing the guide frame 71 to tilt backwards and be fixed. This can block rainwater falling from back to front and allow it to flow down from the rear of the guide frame 71, thus guiding the water and reducing direct contact between rainwater and the surface.

[0086] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A smart education advertising device, characterized in that, include: The base (1) and the bulletin board (11) are connected in a sliding manner. There are two bases (1), and the bulletin board (11) is connected between the bases (1). The bulletin board (13) is connected between the left and right sides of the bulletin board (11); Rain curtain (12) is attached to the top of the bulletin board (11); Limiting mechanism (2), the upper side of the publicity board (13) is provided with limiting mechanism (2); A shielding mechanism (3) is provided on the front side of the bulletin board (11).

2. The smart education publicity device as described in claim 1, characterized in that, The limiting mechanism (2) includes: Fixed rods (27) are connected to the upper parts of both sides of the propaganda board (13); The baffle (21) is rotatably connected to the fixing rod (27); The handle (22) is connected to the bottom center of the cover plate (21); Support frame (23) is connected to the bottom left and right sides of the shield (21); The wedge-shaped frame (25) and the support frame (23) are both slidably connected to the rear side of the wedge-shaped frame (25); The first telescopic spring (26) is connected between the support frame (23) and the corresponding wedge frame (25), and the first telescopic spring (26) is wound around the wedge frame (25); Limiting plates (24) are connected to the bottom left and right sides of the advertising board (13), and the limiting plates (24) are in contact with the adjacent wedge frame (25) on the same side.

3. The smart education publicity device as described in claim 2, characterized in that it provides obstruction. Institution (3) includes: Motor (31) is installed on the lower right side of the front side of the bulletin board (11); Humidity sensor (36) is installed on the lower right side of the front side of the bulletin board (11). The humidity sensor (36) is located above the motor (31) and is electrically connected to the motor (31). Roller (33) is rotatably connected to the left side of the front of the bulletin board (11); A covering cloth (34) is wrapped around a roller (33). The covering cloth (34) is unfolded to the right and blocks the front side of the propaganda board (13). The transmission assembly (32) and the lower part of the roller (33) are connected to the output shaft of the motor (31) by the transmission assembly (32). The transmission assembly (32) consists of two pulleys and a belt. Pulling frame (35) is connected to the left side of the belt of the transmission assembly (32), and the left side of the pulling frame (35) is connected to the right side of the cover cloth (34).

4. The smart educational publicity device as described in claim 3, characterized in that, It also includes a protective mechanism (4), which includes: The connecting frame (42) and the baffle plate (21) are connected in a rotating manner from top to bottom on both sides. Torsion springs (43) are connected between the lower side of the connecting frame (42) and the baffle plate (21); The first shield (41) is rotatably connected to the upper side of the connecting frame (42). The rear side of the first shield (41) contacts the front side of the shield (21); The outer ends of the extrusion plate (44) and the fixing rod (27) are both connected to the extrusion plate (44). When the first shield (41) swings forward and upward, it contacts the extrusion plate (44). The second shield (45) is rotatably connected to the fixed rod (27). The top of the first shield (41) contacts the bottom of the second shield (45). The first shield (41) swings upward, causing the second shield (45) to rotate upward.

5. The smart educational publicity device as described in claim 4, characterized in that, It also includes a lifting mechanism (5), which includes: The first fixed frame (52) is connected to the lower right side of the base (1) on the right side; The screw (51) is threadedly connected to the lower right side of the bulletin board (11). The top of the screw (51) is rotatably connected to the upper side of the first fixed frame (52), and the bottom of the screw (51) is rotatably connected to the lower side of the base (1). A spur gear (54) is connected to the lower side of the lead screw (51); Missing gear (53) is connected to the bottom of the output shaft of motor (31), and the missing gear (53) meshes with spur gear (54); The guide frame (55) is connected to the lower left side of the base (1) on the left side, and the left side of the bulletin board (11) is slidably connected to the guide frame (55).

6. The smart educational publicity device as described in claim 5, characterized in that, It also includes a wiping mechanism (6), which includes: The second fixing frame (61) is connected to the bottom left side of the rain curtain (12); The scraping frame (62) and the second fixed frame (61) are slidably connected to the scraping frame (62) on both the front and rear sides. The inner side of the scraping frame (62) contacts the inner side of the scraping frame (62). When the cover cloth (34) is unfolded to the right, it passes between the inner sides of the two scraping frames (62). The second telescopic spring (63) and the scraper (62) are each connected to the second fixed frame (61) by three second telescopic springs (63).

7. The smart educational publicity device as described in claim 6, characterized in that, It also includes a flow guiding mechanism (7). include: A flow guide (71) is rotatably connected between the left and right sides of the upper part of the bulletin board (11); The third fixed frame (72) is connected to the front and rear sides of the top of the flow guide frame (71); Telescopic components (73) are connected to the upper left and right sides of the third fixed frame (72); limiting frames (74) are connected to the middle of the front and rear sides of the top of the rain curtain (12), and the telescopic components (73) move upward and are inserted into the limiting frames (74) on the same side.

8. The smart education publicity device as described in claim 7, characterized in that, The base (1) is a truncated pyramid, which increases the contact area between the bulletin board (11) and the ground, making the bulletin board less likely to tip over.

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