Outdoor audio-visual interactive multimedia advertising machine

Abstract

The invention discloses an outdoor audio-visual interactive multimedia advertising machine which comprises a shell, a display panel and two broadcasting loudspeakers are installed on the front side of the shell, a power module is installed in the shell, and the power module is used for supplying power to the display panel and the two broadcasting loudspeakers; the ventilation mechanism comprises two exhaust outlets formed in the shell, exhaust fans are installed in the two exhaust outlets, and a rectangular air inlet is formed in the lower end of the shell in a protruding mode; the shielding mechanism comprises a U-shaped top cover controlled by a lifting mechanism, and two mounting plates are symmetrically and fixedly connected to the upper end of the U-shaped top cover. When the advertising machine is used in the daytime, the chimney effect is used in cooperation with synchronous use of the exhaust fan, the heat dissipation effect is good, the whole advertising machine is in a power-off and sealed state in a low-display state in rainy days, electric energy is saved, and meanwhile rainwater is prevented from entering the advertising machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of advertising display, in particular to an outdoor audio-visual interactive multimedia advertising machine. BACKGROUND

[0002] In the field of outdoor advertising, audio-visual interactive multimedia advertising machines have become an important advertising transmission carrier because they can attract audience attention through rich audio-visual content and interactive functions.

[0003] During the day, direct sunlight causes the temperature of the internal electronic components of the advertising machine to rise sharply. High temperature not only accelerates the aging of the components and reduces the service life of the equipment, but also may cause system failure, affecting the normal playing of the advertisement. The existing cooling methods, such as simply relying on the natural cooling of the cooling holes, have low cooling efficiency in high-temperature environments and are difficult to effectively control the internal temperature. Some single-fan cooling solutions also cannot achieve ideal cooling effects due to unreasonable air ducts.

[0004] In addition, the existing advertising machines continue to be powered on in low display states such as rainy days, which not only wastes electricity, but also directly exposes the cooling part, making it prone to water ingress. SUMMARY

[0005] The present application aims to solve the problems in the prior art and provides an outdoor audio-visual interactive multimedia advertising machine. When used during the day, the machine uses the chimney effect in combination with the synchronous use of exhaust fans to achieve better cooling effect. In the low display state of rainy days, the entire advertising machine is in a power-off and sealed state, saving electricity while avoiding rainwater from entering the interior of the advertising machine.

[0006] To achieve the above purpose, the present application adopts the following technical solutions:

[0007] The utility model provides an outdoor audio-visual interactive multimedia advertising machine, including the casing, the front side of casing is equipped with display panel and two loudspeaker horn, the inside of casing is equipped with power module, and power module is used for power supply to display panel and two loudspeaker horn, ventilation mechanism, ventilation mechanism includes the two exhaust vents of casing inside, two exhaust fans are installed in two the exhaust vent, the lower end of casing is provided with the rectangular air inlet in the convex state, shielding mechanism, shielding mechanism includes the U-shaped top cover controlled through the lifting mechanism, the upper end of U-shaped top cover is fixedly connected with two mounting plates, two mounting plates are fixedly connected with two guide rods, two guide rods are jointly penetrated two magnetic attraction plate, the opposite side of two magnetic attraction plate is elastically connected with the corresponding mounting plate through a plurality of first spring, the upper end of U-shaped top cover is equipped with two ventilation round mouth in the symmetry, every ventilation round mouth coincides with the central axis of corresponding exhaust vent, the left side of casing is equipped with rainwater sensing component, when it rains, rainwater sensing component lets power module power off, simultaneously through the lifting mechanism control U-shaped top cover moves down, at this time two magnetic attraction plate blocks corresponding ventilation round mouth, the inner top of U-shaped top cover seals exhaust vent, and the front side of U-shaped top cover seals loudspeaker horn.

[0008] Preferably, the upper end of the casing is fixedly connected with a vertical plate, the upper end of the vertical plate penetrates the horizontal part of the U-shaped top cover and is fixedly connected with a strong magnetic plate, both the magnetic attraction plates have magnetic attraction and can be attracted by the strong magnetic plate.

[0009] Preferably, the lower end of the casing is fixedly connected with two support seats in symmetry, and the front side of the U-shaped top cover is provided with a light shielding plate.

[0010] Preferably, the lifting mechanism includes a horizontal plate fixedly connected to the rear side of the casing, the upper end of the horizontal plate is fixedly connected with a double-shaft motor, the upper end output shaft of the double-shaft motor is fixedly connected with a first threaded rod, the first threaded rod is threadedly connected with a first sliding plate, and the front side of the first sliding plate is fixedly connected with the U-shaped top cover.

[0011] Preferably, the rear side of the casing is provided with a T-shaped guide groove, and the front side of the vertical part at the rear of the U-shaped top cover is fixedly connected with a T-shaped guide strip matched with the T-shaped guide groove.

[0012] Preferably, the lower end of the horizontal plate is provided with a speed changer, the input shaft of the speed changer is fixedly connected with the lower end output shaft of the double-shaft motor, the output shaft of the speed changer is fixedly connected with a second threaded rod, the second threaded rod is threadedly connected with a second sliding plate, the second sliding plate is fixedly connected with a meandering frame, the meandering frame is located outside the casing, the left and right inner walls of the meandering frame are respectively in contact with and slidingly connected to the left and right side walls of the casing, and the front side inner wall of the meandering frame is fixedly connected with a rubber scraping strip.

[0013] Preferably, it further includes a shaking mechanism, which includes a rotating disk rotatably connected to the lower end of the second threaded rod. A connecting rod is rotatably connected to the lower eccentric part of the rotating disk. A rectangular sealing box is rotatably connected to the other end of the connecting rod. A rectangular groove is provided on the front side of the rectangular sealing box. A filter screen that can slide up and down is provided in the rectangular groove. The front side of the filter screen extends to the outside and fits against the lower end of the rectangular air inlet.

[0014] Preferably, rectangular guide grooves are provided on both sides of the rectangular sealing box, and rectangular guide strips are fixedly connected to the opposite sides of the two support seats, with the two rectangular guide strips respectively cooperating with the two rectangular guide grooves.

[0015] Preferably, the lower end of the filter screen is elastically connected to the inner bottom of the rectangular groove by a plurality of second springs, and two first protrusions are symmetrically fixedly connected to the front side of the filter screen. Two mounting seats are symmetrically fixedly connected to the front side of the housing. A plurality of second protrusions are fixedly connected at equal intervals at the lower end of each mounting seat, and the second protrusions cooperate with the corresponding first protrusions.

[0016] Preferably, a rectangular protective cover is fixedly connected to the rear side of the horizontal plate, the other end of the first threaded rod is rotatably connected to the top of the rectangular protective cover via a bearing, and the lower end of the second threaded rod penetrates the bottom of the rectangular protective cover and is rotatably connected via a bearing.

[0017] Compared with the prior art, the beneficial effects of this invention are as follows:

[0018] 1. When the advertising machine of the present invention is used during the day, it utilizes the chimney effect generated by the casing to allow the internal gas to flow naturally. At the same time, the exhaust fan is activated to further accelerate the gas flow rate. The two work together to effectively enhance the heat dissipation effect and ensure the stable operation of the advertising machine.

[0019] 2. In rainy weather, the rain sensor component detects rain, and the advertising machine automatically cuts off power and enters a sealed state. In this state, it saves energy, reduces operating costs, and prevents rainwater from entering, ensuring equipment safety.

[0020] 3. The lifting mechanism in rainy weather drives the movement of related components, enabling the filter to self-clean and be exposed to rainwater backwash when stopped. At the same time, it improves the sealing of the housing, effectively reduces dust entry, and ensures heat dissipation and equipment performance during subsequent use.

[0021] 4. When the rainy weather turns into normal weather, the ring frame moves down. During the downward movement, the rubber scraper fixed to the inner wall of the front side of the ring frame will wipe away the rainwater on the display panel surface, ensuring the subsequent display effect. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the structure of an outdoor audiovisual interactive multimedia advertising machine proposed in this invention;

[0023] Figure 2 for Figure 1 Enlarged view of point A;

[0024] Figure 3 for Figure 1 Front view of the area behind the two support bases;

[0025] Figure 4 for Figure 3 Rear 3D schematic diagram;

[0026] Figure 5 for Figure 3 Partial cross-sectional view;

[0027] Figure 6 This is a schematic diagram of the vibration mechanism;

[0028] Figure 7 for Figure 6 A view taken from below.

[0029] In the diagram: 1. Housing, 2. Display panel, 3. Support base, 4. Speaker, 5. Rain sensor assembly, 6. U-shaped top cover, 7. T-shaped guide strip, 8. Ventilation vent, 9. Exhaust vent, 10. Exhaust fan, 11. Light shield, 12. Strong magnetic plate, 13. Mounting plate, 14. First spring, 15. Guide rod, 16. Magnetic suction plate, 17. U-shaped frame, 18. Rubber scraper, 19. Filter screen, 20. First protrusion, 21. Mounting base, 22. Second protrusion, 23. Rectangular air inlet, 24. Vertical plate, 25. T-shaped guide groove, 26. Horizontal plate, 27. Rectangular protective cover, 28. Gearbox, 29. Dual-axis motor, 30. First threaded rod, 31. First sliding plate, 32. Second threaded rod, 33. Second sliding plate, 34. Rotating disc, 35. Connecting rod, 36. Rectangular sealing box, 37. Rectangular guide groove, 38. Rectangular guide strip, 39. Rectangular groove, 40. Second spring. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] Reference Figure 1 and Figure 3An outdoor audiovisual interactive multimedia advertising machine includes a housing 1. Two support bases 3 are symmetrically fixedly connected to the lower end of the housing 1. The housing 1 can be installed in an outdoor location through the support bases 3. During installation, it can be combined with screw structure and cement pouring. A light-blocking plate 11 is installed on the front side of the U-shaped top cover 6. The use of the light-blocking plate 11 ensures that a certain amount of light can be blocked in strong light environment to ensure the display effect of the advertisement. A display panel 2 and two speakers 4 are installed on the front side of the housing 1. When the advertisement is displayed on the display panel 2, the speakers broadcast simultaneously. By using the combination of audiovisual and visual methods, the actual advertising display effect is improved. A power module is installed inside the housing 1. The power module is used to supply power to the display panel 2 and the two speakers 4.

[0032] Reference Figure 1 , Figures 3-5 It also includes a ventilation mechanism, which includes two exhaust vents 9 inside the housing 1. Each of the two exhaust vents 9 is equipped with an exhaust fan 10. The lower end of the housing 1 is provided with a rectangular air inlet 23 that protrudes outwards. When heat accumulates inside the housing 1, the hot air rises and the cold air sinks, resulting in a chimney effect. This causes some gas to be discharged from the exhaust vents 9, while some external gas is replenished from the rectangular air inlet 23, generating a continuous airflow. Since the rectangular air inlet 23 and the exhaust vents 9 are arranged opposite each other, with one at the bottom and the other at the top, the chimney effect is even better. In this state, the airflow generated by the exhaust fan 10 is faster and the heat dissipation effect is better.

[0033] The system also includes a shielding mechanism, which includes a U-shaped top cover 6. Two mounting plates 13 are symmetrically fixedly connected to the upper end of the U-shaped top cover 6. Two guide rods 15 are fixedly connected between the two mounting plates 13. The two guide rods 15 pass through two magnetic suction plates 16. The opposite sides of the two magnetic suction plates 16 are elastically connected to the corresponding mounting plates 13 through multiple first springs 14. Two ventilation round openings 8 are symmetrically opened at the upper end of the U-shaped top cover 6. Each ventilation round opening 8 coincides with the central axis of the corresponding exhaust port 9. In this way, the airflow discharged from the exhaust port 9 will not be blocked and will be discharged to the outside, ensuring its heat dissipation effect.

[0034] A rain sensor component 5 is installed on the left side of the housing 1. When it rains, the rain sensor component 5 cuts off the power to the power module and controls the U-shaped top cover 6 to move down through the lifting mechanism. At this time, the two magnetic plates 16 block the corresponding ventilation openings 8, the top of the U-shaped top cover 6 seals the exhaust vent 9, and the front of the U-shaped top cover 6 seals the speaker 4. Powering off the top in rainy weather when the display effect is poor can save energy. The design of the U-shaped top cover 6 ensures good sealing and prevents rainwater from entering. It can be reset after the rain stops.

[0035] Reference Figure 3A vertical plate 24 is fixedly connected to the upper end of the housing 1. The upper end of the vertical plate 24 passes through the horizontal part of the U-shaped top cover 6 and is fixedly connected to a strong magnetic plate 12. Both magnetic plates 16 are magnetic and can be attracted by the strong magnetic plate 12. In normal weather, the magnetic plates 16 are at the highest position and are horizontal with the strong magnetic plate 12. At this time, they are attracted by the strong magnetic plate 12, and the two magnetic plates 16 move relative to each other and stretch the corresponding first spring 14, so that the ventilation opening 8 is in an open state. In rainy weather, the two magnetic plates 16 move down and are no longer attracted by the strong magnetic plate 12. They reset under the elasticity of the first spring 14 and seal the ventilation opening 8 again.

[0036] Reference Figure 3 The lifting mechanism includes a horizontal plate 26 fixedly connected to the rear side of the housing 1. A dual-axis motor 29 is fixedly connected to the upper end of the horizontal plate 26. A first threaded rod 30 is fixedly connected to the upper output shaft of the dual-axis motor 29. A first sliding plate 31 is threadedly connected to the first threaded rod 30. The front side of the first sliding plate 31 is fixedly connected to the U-shaped top cover 6. A T-shaped guide groove 25 is provided on the rear side of the housing 1. A T-shaped guide strip 7 that cooperates with the T-shaped guide groove 25 is fixedly connected to the front side of the rear vertical part of the U-shaped top cover 6. The use of the T-shaped guide strip 7 that cooperates with the T-shaped guide groove 25 makes the up-and-down movement of the U-shaped top cover 6 more stable.

[0037] The lower end of the horizontal plate 26 is equipped with a gearbox 28, which is an accelerator capable of changing the direction of rotation. The input shaft of the gearbox 28 is fixedly connected to the lower output shaft of the dual-shaft motor 29. The output shaft of the gearbox 28 is fixedly connected to a second threaded rod 32. The thread direction of the second threaded rod 32 is the same as that of the first threaded rod 30, but when the gearbox 28 reverses direction, the second threaded rod 32 can rotate in the opposite direction to the first threaded rod 30. A second sliding plate 33 is threadedly connected to the second threaded rod 32. After the first threaded rod 30 rotates a few turns, the second threaded rod 32 can... With this method, when the first sliding plate 31 moves down a small distance, the second sliding plate 33 moves up a large distance. A loop frame 17 is fixedly connected to the second sliding plate 33. The loop frame 17 is located outside the housing 1. The inner walls of the left and right sides of the loop frame 17 are in contact with the left and right side walls of the housing 1 and are slidably connected. A rubber scraper 18 is fixedly connected to the inner front side of the loop frame 17. When it rains, the loop frame 17 moves up to the position above the display panel 2. After the rain stops, the loop frame 17 moves down to the initial position. During the downward movement, rainwater can be scraped off the surface of the display panel 2.

[0038] Reference Figures 6-7The system also includes a shaking mechanism, which comprises a rotating disk 34 rotatably connected to the lower end of the second threaded rod 32. A connecting rod 35 is rotatably connected to the eccentric lower end of the rotating disk 34. A rectangular sealing box 36 is rotatably connected to the other end of the connecting rod 35. A rectangular groove 39 is provided on the front side of the rectangular sealing box 36. A filter screen 19 that can slide up and down is provided in the rectangular groove 39. The up and down sliding is achieved by a guide method, that is, multiple guide posts are fixedly connected between the upper and lower inner walls of the rectangular groove 39, and the multiple guide posts vertically penetrate the filter screen. The filter 19 is slidably connected, and the front side of the filter 19 extends to the outside and fits with the lower end of the rectangular air inlet 23 (the filter 19 is located on the outside and is flush with the upper surface of the rectangular sealing box 36). During normal use, the filter 19 intercepts the rectangular air inlet 23, which can prevent external dust from entering the interior of the housing 1 during heat dissipation. Rectangular guide grooves 37 are provided on both sides of the rectangular sealing box 36. Rectangular guide strips 38 are fixedly connected to the opposite sides of the two support seats 3. The two rectangular guide strips 38 cooperate with the two rectangular guide grooves 37 respectively.

[0039] As the rotating disc 34 rotates along with the second threaded rod 32, the connecting rod 35 allows the rectangular sealing box 36 and the filter screen 19 to vibrate back and forth, thus cleaning the filter screen 19. Since it is raining, the cleaned dust will be absorbed and fall by the rainwater, preventing secondary adhesion. Finally, when the filter screen 19 stops moving (after the U-shaped top cover 6 completes the blocking and the U-shaped frame 17 moves to the limit position), the upper surface of the rectangular sealing box 36 blocks the rectangular air inlet 23, further improving the sealing of the housing 1. At this time, the filter screen 19 is exposed to the outside, and the original dust collection point (air inlet) is located on the lower side, so the rainwater can backwash the filter screen 19, further improving its cleanliness.

[0040] The lower end of the filter screen 19 is elastically connected to the inner bottom of the rectangular groove 39 by multiple second springs 40. Two first protrusions 20 are symmetrically fixedly connected to the front side of the filter screen 19, and two mounting seats 21 are symmetrically fixedly connected to the front side of the housing 1. Multiple second protrusions 22 are fixedly connected at equal intervals at the lower end of each mounting seat 21. The second protrusions 22 cooperate with the corresponding first protrusions 20. During the back-and-forth movement of the filter screen 19, the first protrusions 20 will intermittently abut against the multiple second protrusions 22. With the help of the second springs 40, the filter screen 19 can be shaken, further improving its self-cleaning effect.

[0041] Reference Figure 4 The horizontal plate 26 is fixedly connected to a rectangular protective cover 27 on its rear side. The other end of the first threaded rod 30 is rotatably connected to the top of the rectangular protective cover 27 through a bearing. The lower end of the second threaded rod 32 passes through the bottom of the rectangular protective cover 27 and is rotatably connected through a bearing, which improves the actual stability.

[0042] In this invention, during use, the power module supplies power to the display panel 2 and two loudspeakers 4. The display panel 2 displays advertisements, and the loudspeakers 4 simultaneously broadcast announcements, presenting advertisements in a combined audio-visual format. When heat accumulates inside the housing 1, a chimney effect is created due to the rising of hot air and the sinking of cold air. Some gas is discharged from the two exhaust vents 9 at the top of the housing 1, while external gas is supplied from the rectangular air inlet 23 at the bottom of the housing 1, forming a continuous airflow. Since the entire structure is essentially a vertical channel, the airflow effect of the chimney effect is even better. At the same time, the exhaust fan 10 installed inside the exhaust vents 9 starts, further accelerating the gas flow and enhancing the heat dissipation effect.

[0043] In the initial state, the two magnetic plates 16 are at their highest position and are horizontal with the strong magnetic plate 12. The two magnetic plates 16 move relative to each other and stretch the first spring 14 connected to the mounting plate 13 via the guide rod 15. At this time, the ventilation opening 8 at the upper end of the U-shaped top cover 6 is in the open state to ensure heat dissipation.

[0044] When the rain sensor component 5 installed on the left side of the housing 1 detects rain, it cuts off the power to the power module and controls the lifting mechanism to work.

[0045] In the lifting mechanism, the dual-axis motor 29, which is fixedly connected to the horizontal plate 26 on the rear side of the housing 1, is started. Its upper output shaft drives the first threaded rod 30 to rotate. The first sliding plate 31, which is threadedly connected to the first threaded rod 30, drives the U-shaped top cover 6 to move down. The T-shaped guide strip 7, which is fixedly connected to the front side of the vertical part behind the U-shaped top cover 6 and cooperates with the T-shaped guide groove 25 on the rear side of the housing 1, ensures the stability of the up and down movement of the U-shaped top cover 6.

[0046] During the downward movement of the U-shaped top cover 6, the two magnetic plates 16 are no longer attracted by the strong magnetic plate 12 and are reset under the elastic action of the first spring 14, blocking the corresponding ventilation opening 8; the top of the U-shaped top cover 6 is sealed with the exhaust port 9, and the front side of the U-shaped top cover 6 is sealed with the speaker 4 to ensure airtightness and prevent rainwater from entering.

[0047] Meanwhile, the gearbox 28 installed at the lower end of the horizontal plate 26 works under the drive of the output shaft at the lower end of the dual-axis motor 29. Its output shaft drives the second threaded rod 32 to rotate, and the second sliding plate 33 threadedly connected to the second threaded rod 32 drives the loop frame 17 to move up to the position above the display panel 2.

[0048] When the second threaded rod 32 rotates, the rotating disk 34 at its lower end rotates with it, causing the rectangular sealing box 36 and the filter screen 19 to vibrate back and forth via the connecting rod 35. This vibration process achieves self-cleaning, and the cleaned dust is absorbed and falls off by rainwater. As the filter screen 19 moves back and forth, its first protrusion 20 intermittently abuts against the second protrusion 22 at the lower end of the mounting base 21 on the front side of the housing 1. This, combined with the second spring 40, causes it to vibrate up and down, further enhancing the vibration effect. Finally, when the filter screen 19 stops moving, the upper surface of the rectangular sealing box 36 blocks the rectangular air inlet 23, improving the sealing of the housing 1, and the filter screen 19 is exposed to the outside, allowing rainwater to backwash it.

[0049] After the rain stopped, the rain sensor component 5 detected that there was no rain and controlled the dual-axis motor 29 to rotate in the opposite direction.

[0050] The upper output shaft of the dual-axis motor 29 drives the first threaded rod 30 to rotate in the opposite direction, and the first sliding plate 31 drives the U-shaped top cover 6 to move upward and reset. At this time, the two magnetic plates 16 are attracted by the strong magnetic plate 12 again, return to the highest position and are horizontal with the strong magnetic plate 12, stretch the first spring 14, and open the ventilation port 8.

[0051] Meanwhile, driven by the output shaft at the lower end of the dual-axis motor 29, the gearbox 28 causes the second threaded rod 32 to rotate in the opposite direction, and the second sliding plate 33 drives the loop frame 17 to move down to the initial position. During the downward movement, the rubber scraper 18 fixedly connected to the inner wall of the front side of the loop frame 17 scrapes away the rainwater on the surface of the display panel 2, and the filter screen 19 in the initial state is once again at the rectangular air inlet 23 to intercept the dust during heat dissipation.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An outdoor audiovisual interactive multimedia advertising machine, characterized in that, include: The housing (1) has a display panel (2) and two loudspeakers (4) installed on its front side. A power module is installed inside the housing (1) to supply power to the display panel (2) and the two loudspeakers (4). The ventilation mechanism includes two exhaust ports (9) with an opening inside the housing (1), and an exhaust fan (10) is installed in each of the two exhaust ports (9). A rectangular air inlet (23) is provided at the lower end of the housing (1). The shielding mechanism includes a U-shaped top cover (6) controlled by a lifting mechanism. Two mounting plates (13) are symmetrically fixedly connected to the upper end of the U-shaped top cover (6). Two guide rods (15) are fixedly connected between the two mounting plates (13). The two guide rods (15) pass through two magnetic suction plates (16). The opposite sides of the two magnetic suction plates (16) are elastically connected to the corresponding mounting plates (13) via multiple first springs (14). The upper end of the U-shaped top cover (6) is... It is said that there are two ventilation openings (8), and the central axis of each ventilation opening (8) coincides with the corresponding exhaust port (9). A rainwater sensor component (5) is installed on the left side of the housing (1). When it rains, the rainwater sensor component (5) cuts off the power module and controls the U-shaped top cover (6) to move down through the lifting mechanism. At this time, two magnetic plates (16) block the corresponding ventilation openings (8), the exhaust port (9) is sealed at the top inside the U-shaped top cover (6), and the speaker (4) is sealed at the front side of the U-shaped top cover (6).

2. The outdoor audiovisual interactive multimedia advertising machine according to claim 1, characterized in that, A vertical plate (24) is fixedly connected to the upper end of the housing (1). The upper end of the vertical plate (24) passes through the horizontal part of the U-shaped top cover (6) and is fixedly connected to a strong magnetic plate (12). Both magnetic plates (16) are magnetically attracted and can be attracted by the strong magnetic plate (12).

3. The outdoor audiovisual interactive multimedia advertising machine according to claim 1, characterized in that, Two support seats (3) are symmetrically fixedly connected to the lower end of the housing (1), and a light-blocking plate (11) is installed on the front side of the U-shaped top cover (6).

4. An outdoor audiovisual interactive multimedia advertising machine according to claim 3, characterized in that, The lifting mechanism includes a horizontal plate (26) fixedly connected to the rear side of the housing (1). A dual-axis motor (29) is fixedly connected to the upper end of the horizontal plate (26). A first threaded rod (30) is fixedly connected to the upper output shaft of the dual-axis motor (29). A first sliding plate (31) is threadedly connected to the first threaded rod (30). The front side of the first sliding plate (31) is fixedly connected to the U-shaped top cover (6).

5. An outdoor audiovisual interactive multimedia advertising machine according to claim 4, characterized in that, The housing (1) has a T-shaped guide groove (25) on the rear side, and the rear vertical part of the U-shaped top cover (6) is fixedly connected to a T-shaped guide strip (7) that cooperates with the T-shaped guide groove (25).

6. An outdoor audiovisual interactive multimedia advertising machine according to claim 4, characterized in that, A gearbox (28) is installed at the lower end of the horizontal plate (26). The input shaft of the gearbox (28) is fixedly connected to the lower output shaft of the dual-axis motor (29). A second threaded rod (32) is fixedly connected to the output shaft of the gearbox (28). A second sliding plate (33) is threadedly connected to the second threaded rod (32). A loop frame (17) is fixedly connected to the second sliding plate (33). The loop frame (17) is located outside the housing (1). The left and right inner walls of the loop frame (17) are in contact with the left and right inner walls of the housing (1) respectively and are slidably connected. A rubber scraper (18) is fixedly connected to the front inner wall of the loop frame (17).

7. An outdoor audiovisual interactive multimedia advertising machine according to claim 6, characterized in that, It also includes a shaking mechanism, which includes a rotating disk (34) rotatably connected to the lower end of the second threaded rod (32). A connecting rod (35) is rotatably connected to the lower eccentric part of the rotating disk (34). A rectangular sealing box (36) is rotatably connected to the other end of the connecting rod (35). A rectangular groove (39) is provided on the front side of the rectangular sealing box (36). A filter screen (19) that can slide up and down is provided in the rectangular groove (39). The front side of the filter screen (19) extends to the outside and fits against the lower end of the rectangular air inlet (23).

8. An outdoor audiovisual interactive multimedia advertising machine according to claim 7, characterized in that, The rectangular sealing box (36) has rectangular guide grooves (37) on both sides, and rectangular guide strips (38) are fixedly connected to the opposite sides of the two support seats (3), and the two rectangular guide strips (38) cooperate with the two rectangular guide grooves (37) respectively.

9. An outdoor audiovisual interactive multimedia advertising machine according to claim 7, characterized in that, The lower end of the filter screen (19) is elastically connected to the inner bottom of the rectangular groove (39) by a plurality of second springs (40). The front side of the filter screen (19) is symmetrically fixedly connected to two first protrusions (20). The front side of the housing (1) is symmetrically fixedly connected to two mounting seats (21). The lower end of each mounting seat (21) is fixedly connected to a plurality of second protrusions (22) at equal intervals. The second protrusions (22) cooperate with the corresponding first protrusions (20).

10. An outdoor audiovisual interactive multimedia advertising machine according to claim 9, characterized in that, A rectangular protective cover (27) is fixedly connected to the rear side of the horizontal plate (26). The other end of the first threaded rod (30) is rotatably connected to the top of the rectangular protective cover (27) through a bearing. The lower end of the second threaded rod (32) penetrates the bottom of the rectangular protective cover (27) and is rotatably connected through a bearing.

Images