Interactive intelligent control lamp box

Abstract

The invention discloses an interactive intelligent control lamp box, and relates to the technical field of lamp boxes, the interactive intelligent control lamp box comprises a box intelligent screen, the side of the lamp box intelligent screen is provided with a loudspeaker box, the upper surface of the lamp box intelligent screen is fixedly connected with an upper water collecting tank, and the front side edge of the lamp box intelligent screen is provided with an interactive light source; the linkage shaft is connected to the rear side of the lamp box intelligent screen in a nested mode, and a knocking plate is arranged on the rear side of the lamp box intelligent screen. According to the interactive intelligent control lamp box, when rainwater enters the lower water collecting tank, a water wheel is impacted, so that the water wheel drives a driving shaft to rotate, at the moment, the driving shaft synchronously drives a linkage shaft to rotate under the auxiliary action of a conveying belt, and a cam fixedly arranged on the linkage shaft synchronously rotates at the moment; and when rainwater enters the lamp box intelligent screen, the movable rod is pushed in an abutting mode, so that the knocking plate is driven by the movable rod to move and knock the rear side of the lamp box intelligent screen, and the possibility that rainwater is attached to the outer side of the lamp box intelligent screen shell is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of light boxes, and in particular to an interactive intelligent control light box. Background Art

[0002] Smart control light boxes are an important part of smart city construction. Based on information technology, they use electronic display technology and information transmission technology to achieve the integration and convenience of urban sign communication.

[0003] With the continuous development of technologies such as the Internet of Things and artificial intelligence, smart-controlled light boxes are showing a trend of becoming more intelligent and personalized, but the steps in installing the light boxes are relatively complicated.

[0004] In order to overcome the above defects, prior art 1 (publication number: CN114203071A, Chinese patent published on 2022-03-18) is a smart interactive LCD light box for a bus shelter, including a box body, two optical axes are installed between the upper and lower inner walls of the box body, and two driving mechanisms are arranged between the two optical axes. Two moisture-absorbing cloth blocks and wiping sponges are used to provide a limiting effect on the LCD screen installed in the box body, so as to solve the problem that the traditional LCD screen is rigidly installed in the light box and rigidly twisted, broken and the internal parts fall off due to the vibration generated by the passing of vehicles, and provide a flexible limiting force for the LCD screen, and facilitate the installation and later maintenance and disassembly of the LCD screen. At the same time, when the moisture-absorbing cloth block moves up and down under the action of the electric sliding sleeve, it can absorb the moisture in the box body, so as to prevent moisture from entering the light box in rainy weather and corroding the internal parts of the light box, and the wiping sponge can wipe the LCD screen to remove dust and moisture attached to the surface, and keep the LCD screen dry.

[0005] There is also prior art 2 (publication number: CN113436552A, Chinese patent with publication date of 2021-09-24) a smart light box with convertible advertisements. A smart light box with convertible advertisements includes a base, a support column is fixedly installed on the top of the base, a box is fixedly installed on the top of the support column, a switching device is fixedly installed in the box, and the switching device includes a first sleeve, a second sleeve, a servo motor and a transmission belt. The first sleeve and the second sleeve are fixedly installed with sleeves at one end, and the output shaft of the second sleeve passes through the inner wall of the box and is provided with a servo motor. The first sleeve and the second sleeve are provided with a transmission belt at one end away from the servo motor. There are two groups of sleeves, and the two groups of sleeves are connected by transmission belts. The outer side of the two groups of sleeves is covered with canvas, and the side of the box close to the canvas is inlaid with a glass panel, which can effectively solve the problem that most of the existing advertising light boxes are composed of a single picture step, cannot display multiple advertisements, cannot automatically change advertisements, and the display board of the advertising light box is prone to accumulate dust, resulting in unclear display of the displayed advertisements.

[0006] Although the existing technologies 1 and 2 can conveniently install the light box, the light box has no protective mechanism. In rainy weather, rainwater may penetrate into the box body and affect the subsequent normal operation of the device.

[0007] So we proposed an interactive intelligent light box to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide an interactive intelligent control light box to solve the problem raised in the above background technology that the light boxes currently on the market have no protective mechanism, and in rainy weather, rainwater may penetrate into the box body and affect the subsequent normal operation of the device.

[0009] To achieve the above object, the present invention provides the following technical solutions: an interactive intelligent control light box, comprising a light box intelligent screen, a speaker is arranged on the side of the light box intelligent screen, an upper water collecting tank is fixedly connected to the upper surface of the light box intelligent screen, and an interactive light source is arranged at the front edge of the light box intelligent screen;

[0010] A linkage shaft, wherein the linkage shaft is nested and connected to the rear side of the light box smart screen, and a knocking plate is provided on the rear side of the light box smart screen, and a vibration mechanism is provided between the lower side of the upper water collection tank and the linkage shaft, which can drive the knocking plate to knock on the light box smart screen;

[0011] A fixing frame is fixedly connected to the side of the light box smart screen, and an adjusting shaft is nested and connected to the fixing frame, and a wiping mechanism for wiping the outside of the speaker is arranged between the end of the adjusting shaft and the inside of the fixing frame.

[0012] Preferably, a lower water collecting tank is fixedly connected to the upper rear end of the light box smart screen, and a connecting pipe is connected through the upper surface of the lower water collecting tank and the lower surface of the upper water collecting tank, and a driving shaft is nested inside the lower water collecting tank, and a water wheel is fixedly connected to the outside of the driving shaft.

[0013] Preferably, the end of the driving shaft extends to the outside of the lower water collecting tank, and a transmission belt is arranged between the end side of the driving shaft and the linkage shaft, the connecting pipe is located on the upper side of the water wheel, and the driving shaft forms a rotating structure through the water wheel and the lower water collecting tank.

[0014] Preferably, the vibration mechanism includes an auxiliary frame, the auxiliary frame is fixedly connected to the rear side of the light box smart screen, and a moving rod is nested and connected at the center of the auxiliary frame, and a knocking plate is fixedly connected to the inner side of the moving rod, and a cam is fixedly connected at the center of the linkage shaft;

[0015] The rear side of the light box smart screen is fixedly connected to a limiting rod, the lower end of the knocking plate is nested and connected to the outer side of the limiting rod, and a spring is fixedly connected between the knocking plate and the end side of the limiting rod.

[0016] Preferably, the cam is located directly behind the moving rod, and the linkage shaft forms a rotating structure with the light box smart screen through a transmission belt.

[0017] Preferably, the moving rod and the auxiliary frame form a sliding structure through a cam, and the knocking plate and the limiting rod form a sliding structure, and the knocking plate and the limiting rod form an elastic structure.

[0018] Preferably, the wiping mechanism comprises a gear, the gear is fixedly connected to the adjusting shaft, and the lower surface of the knocking plate is fixedly connected to a toothed plate;

[0019] The end side of the adjusting shaft is fixedly connected with an adjusting disk, and the side of the adjusting disk is nested with a sliding sleeve, the inner side of the fixing frame is nested with a swing shaft, and the outer side of the swing shaft is fixedly connected with a swing plate, and the inner side of the swing plate is fixedly connected with a sliding rod, and the outer side of the sliding rod is nested with a sliding sleeve, and the outer side of the sliding sleeve is fixedly connected to the end side of the sliding sleeve;

[0020] The outer end side of the swing shaft is fixedly connected with a connecting plate, and the side of the connecting plate is fixedly connected with a wiping cotton.

[0021] Preferably, the tooth plate and the gear are meshed with each other, the adjusting shaft and the fixed frame form a rotating structure through the gear, and the swing shaft and the fixed frame form a rotating structure through the swing plate.

[0022] Preferably, the sliding sleeve forms a sliding structure with the slide rod through the adjusting rod, and the slide rod forms a sliding structure with the adjusting disk through the sliding sleeve, the side of the wiping cotton is in contact with the outside of the speaker, and the wiping cotton is elastic.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) A speaker is provided on the side of the light box smart screen, through which the advertising content demonstrated by the light box smart screen can be broadcast, and cooperates with the interactive light source provided on the side of the light box smart screen to further improve the conspicuousness of the light box smart screen and attract people to stay and watch;

[0025] (2) The upper water collection trough can collect rainwater in rainy weather, reducing the possibility of rainwater dripping directly onto the upper side of the light box smart screen, which would cause the light box smart screen to leak due to rainwater infiltration. At the same time, the rainwater in the upper water collection trough can be poured into the lower water collection trough through the connecting pipe, and discharged to the outside through the drainage pipe set at the rear side of the lower water collection trough, reducing the possibility of rainwater overflow caused by excessive rainwater in the upper water collection trough;

[0026] (3) When rainwater enters the lower water collection tank, it will impact the water wheel, causing the water wheel to drive the driving shaft to rotate. At this time, the driving shaft will synchronously drive the linkage shaft to rotate with the assistance of the transmission belt. At this time, the cam fixed on the linkage shaft will rotate synchronously. When the cam rotates, it will resist the moving rod, thereby driving the knocking plate to move through the moving rod and knocking on the back side of the light box smart screen, reducing the possibility of rainwater adhering to the outside of the light box smart screen shell;

[0027] (4) When the moving rod moves, the auxiliary frame will limit it, thereby further improving the stability of the knocking plate. At the same time, the lower side of the knocking plate will move along the limiting rod. At the same time, the movement of the knocking plate will cause the spring to undergo elastic deformation. When the moving rod is not resisted, the knocking plate will reset under the drive of the elastic force of the spring, thereby achieving reciprocating knocking of the knocking plate, further improving the vibration effect of the light box smart screen.

[0028] (5) When the knocking plate moves backward, it will synchronously drive the tooth plate to move. At this time, the adjusting shaft will rotate under the meshing action of the tooth plate and the gear. When the adjusting shaft rotates, it will synchronously drive the adjusting disk to rotate. At this time, the adjusting disk will drive the sliding sleeve to move on the sliding rod through the adjustment rod nested on the side. At this time, the sliding rod will cause the swing plate to deflect under the driving action of the sliding sleeve. When the swing plate deflects, it will synchronously drive the connecting plate to deflect through the swing shaft. At this time, the connecting plate can drive the erasing cotton to wipe one side of the speaker back and forth, thereby reducing the possibility of rainwater penetrating into the speaker through the holes opened in the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the three-dimensional rear view structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of the lower water collecting tank of the present invention;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the water wheel of the present invention;

[0033] Figure 5 It is a schematic diagram of the three-dimensional structure of the linkage shaft of the present invention;

[0034] Figure 6 It is a schematic diagram of the three-dimensional structure of the cam of the present invention;

[0035] Figure 7 It is a schematic diagram of the three-dimensional structure of the knocking plate of the present invention;

[0036] Figure 8This is a schematic diagram of the three-dimensional structure of the adjusting shaft of the present invention;

[0037] Fig. 9 This is a schematic diagram of the three-dimensional structure of the wiping cotton of the present invention;

[0038] Fig.10 It is a schematic diagram of the three-dimensional structure of the adjustment disk of the present invention;.

[0039] In the figure: 1. Light box smart screen; 2. Upper water collection tank; 3. Lower water collection tank; 4. Conveyor belt; 5. Driving shaft; 6. Water wheel; 7. Linkage shaft; 8. Speaker; 9. Adjustment disk; 10. Fixed frame; 11. Auxiliary frame; 12. Knocking plate; 13. Moving rod; 14. Cam; 15. Limit rod; 16. Spring; 17. Adjustment shaft; 18. Tooth plate; 19. Gear; 20. Wiping cotton; 21. Connecting plate; 22. Swing shaft; 23. Swing plate; 24. Sliding sleeve; 25. Sliding rod; 26. Adjustment rod; 27. Connecting pipe; 28. Interactive light source. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1: Figure 1 and Figure 2 The technical solution shown in the figure, the utility model provides the following technical solution: an interactive intelligent control light box, which discloses an interactive light source 28 and a sound box 8, and the interactive light source 28 and the sound box 8 cooperate with each other to attract people to stay and watch:

[0042] A light box smart screen 1, a speaker 8 is arranged on the side of the light box smart screen 1, an upper water collecting tank 2 is fixedly connected to the upper surface of the light box smart screen 1, and an interactive light source 28 is arranged at the front edge of the light box smart screen 1;

[0043] A lower water collecting tank 3 is fixedly connected to the upper rear end of the light box smart screen 1, and a connecting pipe 27 is connected through the upper surface of the lower water collecting tank 3 and the lower surface of the upper water collecting tank 2, and a driving shaft 5 is nested and connected inside the lower water collecting tank 3, and a water wheel 6 is fixedly connected to the outside of the driving shaft 5, and the end of the driving shaft 5 extends to the outside of the lower water collecting tank 3, and a conveyor belt 4 is arranged between the end side of the driving shaft 5 and the linkage shaft 7, and the connecting pipe 27 is located on the upper side of the water wheel 6, and the driving shaft 5 forms a rotating structure with the lower water collecting tank 3 through the water wheel 6.

[0044] A speaker 8 is arranged on the side of the light box smart screen 1, through which the advertising content demonstrated by the light box smart screen 1 can be broadcast, and cooperate with the interactive light source 28 arranged on the side of the light box smart screen 1 to further improve the conspicuousness of the light box smart screen 1 and attract people to stay and watch. The upper water collecting trough 2 can collect rainwater in rainy weather to reduce rainwater directly dripping on the upper side of the light box smart screen 1, causing the light box smart screen 1 to leak due to rainwater infiltration. At the same time, the rainwater inside the upper water collecting trough 2 can be poured into the lower water collecting trough 3 through the connecting pipe 27, and discharged outward through the drainage pipe arranged on the rear side of the lower water collecting trough 3, reducing the possibility of rainwater overflow caused by excessive rainwater received by the upper water collecting trough 2.

[0045] Embodiment 2: Figure 1 , Figure 3-Figure 6 The technical solution shown in the utility model provides the following technical solution: an interactive intelligent control light box, which discloses a vibration mechanism, and the vibration mechanism can reduce the adhesion of rainwater to the outer side of the light box intelligent screen 1 shell:

[0046] The linkage shaft 7 is nested and connected to the rear side of the light box smart screen 1, and a knocking plate 12 is provided on the rear side of the light box smart screen 1, and a vibration mechanism that can drive the knocking plate 12 to knock on the light box smart screen 1 is provided between the lower side of the upper water collection tank 2 and the linkage shaft 7;

[0047] The vibration mechanism includes an auxiliary frame 11, which is fixedly connected to the rear side of the light box smart screen 1, and a moving rod 13 is nested and connected at the center of the auxiliary frame 11, and a knocking plate 12 is fixedly connected to the inner side of the moving rod 13, a cam 14 is fixedly connected to the center of the linkage shaft 7, a limiting rod 15 is fixedly connected to the rear side of the light box smart screen 1, the lower end of the knocking plate 12 is nested and connected to the outer side of the limiting rod 15, and a spring 16 is fixedly connected between the knocking plate 12 and the end side of the limiting rod 15;

[0048] The cam 14 is located directly behind the moving rod 13, the linkage shaft 7 forms a rotating structure with the light box smart screen 1 through the transmission belt 4, the moving rod 13 forms a sliding structure with the auxiliary frame 11 through the cam 14, and the knocking plate 12 forms a sliding structure with the moving rod 13 and the limit rod 15, and the knocking plate 12 forms an elastic structure with the limit rod 15 through the spring 16.

[0049] When rainwater enters the lower water collection tank 3, it will impact the water wheel 6, so that the water wheel 6 drives the driving shaft 5 to rotate. At this time, the driving shaft 5 will synchronously drive the linkage shaft 7 to rotate with the assistance of the transmission belt 4. At this time, the cam 14 fixed on the linkage shaft 7 rotates synchronously. When the cam 14 rotates, it will resist the moving rod 13, thereby driving the knocking plate 12 to move through the moving rod 13, and knocking the rear side of the light box smart screen 1, reducing the rainwater adhering to the shell of the light box smart screen 1 It is possible that when the moving rod 13 moves on the outside, the auxiliary frame 11 will limit it, thereby further improving the stability of the movement of the knocking plate 12, and at the same time, the lower side of the knocking plate 12 will move along the limiting rod 15. At the same time, the movement of the knocking plate 12 will cause the spring 16 to undergo elastic deformation. When the moving rod 13 is not resisted, the knocking plate 12 will reset under the drive of the elastic force of the spring 16, thereby realizing the reciprocating knocking of the knocking plate 12, further improving the vibration effect of the light box smart screen 1.

[0050] Embodiment 3: Figure 2 , Figure 7-10 The technical solution shown in the figure, the utility model provides the following technical solution: an interactive intelligent control light box, disclosing a wiping mechanism, through which one side of the speaker 8 can be reciprocatedly wiped:

[0051] A fixing frame 10, the fixing frame 10 is fixedly connected to the side of the light box smart screen 1, and an adjustment shaft 17 is nested and connected to the fixing frame 10, and a wiping mechanism that can wipe the outside of the speaker 8 is provided between the end of the adjustment shaft 17 and the inside of the fixing frame 10;

[0052] The wiping mechanism includes a gear 19, which is fixedly connected to the adjusting shaft 17, a toothed plate 18 is fixedly connected to the lower surface of the knocking plate 12, an adjusting disk 9 is fixedly connected to the end side of the adjusting shaft 17, and a sliding sleeve 24 is nested and connected to the side of the adjusting disk 9, a swing shaft 22 is nested and connected to the inner side of the fixed frame 10, and a swing plate 23 is fixedly connected to the outer side of the swing shaft 22, and a slide bar 25 is fixedly connected to the inner side of the swing plate 23, and a slide sleeve 24 is nested and connected to the outer side of the slide bar 25, and the outer side of the slide sleeve 24 is fixedly connected to the end side of the slide sleeve 24, and a connecting plate 21 is fixedly connected to the outer end side of the swing shaft 22, and a wiping cotton 20 is fixedly connected to the side of the connecting plate 21;

[0053] The tooth plate 18 and the gear 19 are meshed with each other, the adjusting shaft 17 and the fixed frame 10 form a rotating structure through the gear 19, the swinging shaft 22 and the fixed frame 10 form a rotating structure through the swinging plate 23, the sliding sleeve 24 and the sliding rod 25 form a sliding structure through the adjusting rod 26, and the sliding rod 25 and the adjusting disk 9 form a sliding structure through the sliding sleeve 24, the side of the wiping cotton 20 is in contact with the outside of the sound box 8, and the wiping cotton 20 is elastic.

[0054] When the knocking plate 12 moves backward, it will synchronously drive the tooth plate 18 to move. At this time, the adjusting shaft 17 rotates under the meshing action of the tooth plate 18 and the gear 19. When the adjusting shaft 17 rotates, it will synchronously drive the adjusting disk 9 to rotate. At this time, the adjusting disk 9 will drive the sliding sleeve 24 to move on the sliding rod 25 through the adjusting rod 26 nested on the side. At this time, the sliding rod 25 will cause the swing plate 23 to deflect under the driving action of the sliding sleeve 24. When the swing plate 23 deflects, it will synchronously drive the connecting plate 21 to deflect through the swing shaft 22. At this time, the connecting plate 21 can drive the erasing cotton 20 to wipe one side of the speaker 8 back and forth, thereby reducing the possibility of rainwater penetrating into the speaker 8 through the holes opened in the speaker 8.

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An interactive intelligent control light box, comprising a light box intelligent screen (1), a speaker (8) being arranged on the side of the light box intelligent screen (1), an upper water collecting tank (2) being fixedly connected to the upper surface of the light box intelligent screen (1), and an interactive light source (28) being arranged at the front edge of the light box intelligent screen (1); It is characterized in that The smart light box also includes: A linkage shaft (7), wherein the linkage shaft (7) is nested and connected to the rear side of the light box smart screen (1), and a knocking plate (12) is provided on the rear side of the light box smart screen (1), and a vibration mechanism capable of driving the knocking plate (12) to knock on the light box smart screen (1) is provided between the lower side of the upper water collecting tank (2) and the linkage shaft (7); A fixing frame (10) is fixedly connected to the side of the light box smart screen (1), and an adjustment shaft (17) is nested and connected to the fixing frame (10), and a wiping mechanism capable of wiping the outside of the speaker (8) is provided between the end of the adjustment shaft (17) and the inside of the fixing frame (10).

2. The interactive intelligent control light box according to claim 1, characterized in that: The upper rear end of the light box smart screen (1) is fixedly connected to a lower water collecting trough (3), and a connecting pipe (27) is connected through the upper surface of the lower water collecting trough (3) and the lower surface of the upper water collecting trough (2), and a driving shaft (5) is nested and connected inside the lower water collecting trough (3), and a water wheel (6) is fixedly connected to the outer side of the driving shaft (5).

3. The interactive intelligent control light box according to claim 2, characterized in that: The end of the driving shaft (5) extends to the outside of the lower water collecting tank (3), and a transmission belt (4) is arranged between the end side of the driving shaft (5) and the linkage shaft (7). The connecting pipe (27) is located on the upper side of the water wheel (6), and the driving shaft (5) forms a rotating structure with the lower water collecting tank (3) through the water wheel (6).

4. The interactive intelligent control light box according to claim 2, characterized in that: The vibration mechanism comprises an auxiliary frame (11), the auxiliary frame (11) is fixedly connected to the rear side of the light box smart screen (1), and a moving rod (13) is nested and connected at the center of the auxiliary frame (11), and a knocking plate (12) is fixedly connected to the inner side of the moving rod (13), and a cam (14) is fixedly connected to the center of the linkage shaft (7); The rear side of the light box smart screen (1) is fixedly connected to a limiting rod (15), the lower end of the knocking plate (12) is nested and connected to the outer side of the limiting rod (15), and a spring (16) is fixedly connected between the knocking plate (12) and the end side of the limiting rod (15).

5. The interactive intelligent control light box according to claim 4, characterized in that: The cam (14) is located directly behind the moving rod (13), and the linkage shaft (7) forms a rotating structure with the light box smart screen (1) through a transmission belt (4).

6. The interactive intelligent control light box according to claim 4, characterized in that: The moving rod (13) forms a sliding structure with the auxiliary frame (11) through the cam (14), and the knocking plate (12) forms a sliding structure with the moving rod (13) and the limiting rod (15), and the knocking plate (12) forms an elastic structure with the spring (16) and the limiting rod (15).

7. The interactive intelligent control light box according to claim 4, characterized in that: The wiping mechanism comprises a gear (19), the gear (19) is fixedly connected to the adjusting shaft (17), and the lower surface of the knocking plate (12) is fixedly connected to a toothed plate (18); The end side of the adjusting shaft (17) is fixedly connected with an adjusting disk (9), and the side of the adjusting disk (9) is nested with a sliding sleeve (24), the inner side of the fixing frame (10) is nested with a swing shaft (22), and the outer side of the swing shaft (22) is fixedly connected with a swing plate (23), and the inner side of the swing plate (23) is fixedly connected with a sliding rod (25), and the outer side of the sliding rod (25) is nested with a sliding sleeve (24), and the outer side of the sliding sleeve (24) is fixedly connected to the end side of the sliding sleeve (24); The outer end side of the swing shaft (22) is fixedly connected to a connecting plate (21), and the side of the connecting plate (21) is fixedly connected to a wiping cotton (20).

8. The interactive intelligent control light box according to claim 7, characterized in that: The toothed plate (18) and the gear (19) are meshed with each other, the adjusting shaft (17) forms a rotating structure with the fixed frame (10) through the gear (19), and the swinging shaft (22) forms a rotating structure with the fixed frame (10) through the swinging plate (23).

9. The interactive intelligent control light box according to claim 7, characterized in that: The sliding sleeve (24) forms a sliding structure with the sliding rod (25) through the adjusting rod (26), and the sliding rod (25) forms a sliding structure with the adjusting disk (9) through the sliding sleeve (24), the side of the wiping cotton (20) contacts the outer side of the sound box (8), and the wiping cotton (20) is elastic.

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