Outdoor intelligent advertising machine with automatic safety debugging function

Abstract

The invention relates to the technical field of advertising players, in particular to an outdoor intelligent advertising player with an automatic safety debugging function, which comprises a casing and a screen arranged on the casing. A linear driver used for driving the screen to move in the horizontal direction is horizontally arranged in the machine shell, the screen has a retracting state and an extending state when moving stops, when the screen is in the retracting state, the end face, facing the outside, of the screen is located in the machine shell, and a cleaning unit is arranged in the machine shell. The cleaning unit comprises a water sprayer for spraying water to the screen in the retraction state; when the screen is in the extending state, the end face, facing the outside, of the screen is coplanar with the side wall end face of the machine shell. According to the invention, regular automatic cleaning can be realized, and the display angle during working is not limited by the cleaning unit.

Description

Technical Field

[0001] The present invention relates to the technical field of advertising machines, and particularly to an outdoor intelligent advertising machine with an automatic safety debugging function. Background Art

[0002] Existing advertising machines are usually sealed inside a housing to prevent water and moisture, which causes the heat generated during their operation to not be effectively dissipated, resulting in an increase in the temperature of the internal electrical components. In severe cases, it is easy to cause damage to the electrical components, reducing the overall service life and bringing certain losses to the owner's economic property.

[0003] Chinese Patent Publication No. CN216212116U discloses a high-efficiency moisture-resistant and waterproof ultra-high-definition liquid crystal display outdoor intelligent advertising machine, including a housing body. A transparent sealing plate is fixedly installed on the right side of the outer surface of the housing body. The middle end of the left side of the inner cavity of the housing body is fixedly connected with a hollow cooling plate. The right side of the hollow cooling plate is fixedly connected with a second heat conducting plate. An advertising machine body is fixedly installed between the right side of the outer surface of the hollow cooling plate and the right side of the second heat conducting plate. A circulation pump is fixedly installed between the lower end of the left side of the hollow cooling plate and the lower end of the left side of the outer surface of the housing body through a pipeline. The output end of the circulation pump and the upper end of the left side of the hollow cooling plate are fixedly installed with a radiator through a pipeline. The top of the housing body is fixedly connected with a drying box. The middle end of the top of the drying box is fixedly installed with a second electric valve through a pipeline. The middle end of the bottom of the drying box is fixedly installed with a first electric valve through a pipeline. A metal mesh plate is fixedly installed at the lower end of the inner cavity of the drying box. An electric heating tube is fixedly installed at the bottom of the metal mesh plate. Silica gel desiccant particles are placed on the top of the metal mesh plate and inside the drying box. A blower is fixedly installed between the left end of the top of the drying box and the lower end of the back surface of the housing body through a pipeline. The right side of the blower is fixedly installed on the left side of the outer surface of the drying box.

[0004] The above solution avoids the erosion of rainwater on the advertising machine body. However, during the use of outdoor advertising machines, a large amount of dust will accumulate on the outdoor advertising machines, resulting in the screen of the outdoor advertising machines being blocked by dust. The existing cleaning methods mostly rely on manual cleaning, but the cleaning workload is large. Although there are also some cleaning devices for outdoor advertising machines, the cleaning devices are mostly independent devices, and the outdoor advertising machines cannot achieve self-cleaning functions. If the cleaning device is directly sleeved on the advertising machine, the cleaning device will surround the surrounding of the advertising machine, resulting in an inlaid setting of the advertising machine, which affects the operation of the advertising machine. If the advertising machine is cleaned with rainwater on rainy days, the cleaning may not be thorough because some stains will adhere to the surface of the advertising machine. If cleaning liquid is sprayed on rainy days, although the cleaning liquid can dissolve the stains, there will be a situation where the cleaning liquid cannot be completely rinsed off. Summary of the Invention

[0005] To solve the above problems, an outdoor intelligent advertising machine with an automatic safety debugging function is provided. By installing a cleaning unit for cleaning the screen into the cabinet, and at the same time enabling the screen to move horizontally, when the screen retracts into the cabinet, the cleaning unit will clean the screen. After the screen is cleaned, the screen will extend again. When the screen is in the extended state, the end face of the screen facing the outside is coplanar with the side wall end face of the cabinet, and the cleaning unit will not surround the screen on all sides.

[0006] To solve the problems of the prior art, the present invention provides an outdoor intelligent advertising machine with an automatic safety debugging function, including a cabinet and a screen disposed on the cabinet; a linear driver for driving the screen to move horizontally is horizontally disposed in the cabinet. When the screen stops moving, it has a retracted state and an extended state. When the screen is in the retracted state, the end face of the screen facing the outside is located inside the cabinet. A cleaning unit is disposed in the cabinet, and the cleaning unit includes a water sprayer for spraying water on the screen when the screen is in the retracted state; when the screen is in the extended state, the end face of the screen facing the outside is coplanar with the side wall end face of the cabinet.

[0007] Preferably, the cleaning unit further includes a squeegee moving vertically. The end face of the screen facing the outside is called the display end face. When the screen is in the retracted state, the squeegee is in sliding fit with the display end face.

[0008] Preferably, when the squeegee moves downward, the squeegee is in a horizontal state, and the end of the squeegee is in sliding fit with the display end face. When the squeegee moves upward, the squeegee is in a downward inclined state, and the squeegee is disengaged from contact with the display end face.

[0009] Preferably, the cleaning unit further includes a drainage trough located below the screen when the screen is in the retracted state.

[0010] Preferably, lifting seats capable of driving the squeegee to move synchronously in the vertical direction are respectively disposed at both ends of the squeegee. A first limit block for limiting the squeegee in the horizontal state is horizontally and fixedly disposed on the lifting seat, and a second limit block for limiting the squeegee in the downward inclined state is inclined and fixedly disposed on the lifting seat.

[0011] Preferably, the cleaning unit includes a first reversing device disposed on the upper layer of the cabinet. The first reversing device includes a first rack vertically disposed on the cabinet. The teeth on the first rack are all inclined upward. A first ratchet wheel rotating synchronously with the squeegee is fixedly disposed at the end of the squeegee. When the squeegee descends, the first ratchet wheel meshes with the first rack.

[0012] Preferably, a first spring is horizontally disposed on the side of the first rack away from the first ratchet wheel.

[0013] Preferably, a magnet for fixedly connecting the two lifting seats is arranged between the two lifting seats. The magnet is arranged horizontally, and an iron sheet that can be magnetically attracted by the magnet is arranged on the upper part of the scraper.

[0014] Preferably, a second commutation device is arranged in the lower layer of the casing. The second commutation device includes a vertically arranged second rack, and a second ratchet is further arranged at the end of the scraper. The teeth on the second rack are all inclined downward. When the scraper ascends, the second ratchet meshes with the second rack.

[0015] Preferably, a second spring is arranged on the side of the second rack away from the second ratchet.

[0016] The beneficial effects of the present invention compared with the prior art are as follows:

[0017] 1. By installing the cleaning unit for cleaning the screen into the casing and enabling the screen to move horizontally, when the screen retracts into the casing, the cleaning unit will clean the screen. After the screen is cleaned, the screen will extend again. When the screen is in the extended state, the end face of the screen facing the outside is coplanar with the side wall end face of the casing, and the cleaning unit will not surround the screen on all sides, enabling the screen to be automatically cleaned regularly and the display angle during work not to be limited by the cleaning unit.

[0018] 2. By arranging the scraper, the scraper and the water sprayer cooperate with each other to clean the display end face of the screen. First, the water sprayer sprays water on the display end face of the screen. Subsequently, the scraper descends. During the descent of the scraper, it switches from a downward inclined state to a horizontal state. The end of the scraper facing the display end face is in sliding fit with the display end face. During the descent of the scraper, the water stains and stains attached to the display end face are scraped off. At the same time, during the ascent, the scraper switches from a horizontal state to a downward inclined state, and the scraper does not contact the display end face, avoiding the scraper coating some water stains onto the display end face. At the same time, when multiple cleanings are required, the downward inclined scraper will not obstruct the water flow sprayed by the water sprayer during the ascent, ensuring that the water flow can flow smoothly from the display end face. Description of the Drawings

[0019] Figure 1 is a three-dimensional schematic diagram of the screen in a normally working state in an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention.

[0020] Figure 2 is a three-dimensional schematic diagram of the screen in a cleaning state in an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention.

[0021] Figure 3 is a sectional three-dimensional schematic diagram of the screen in a cleaning state in an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention.

[0022] Figure 4 It is a partial enlarged schematic view of the A position in Figure 3 an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention.

[0023] Figure 5 It is a three-dimensional schematic view of an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention after removing the machine shell.

[0024] Figure 6 It is a partial enlarged schematic view of the B position in the 5th coating of an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention.

[0025] Figure 7 It is a sectional three-dimensional schematic view of an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention after removing the machine shell and when the scraper descends to the lowest position.

[0026] Figure 8 It is Figure 7 a partial enlarged schematic view of the C position in an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention.

[0027] Figure 9 It is a three-dimensional schematic view of an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention after removing the machine shell and when the scraper is at the highest position.

[0028] Figure 10 It is Figure 9 a partial enlarged schematic view of the D position in an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention.

[0029] Figure 11 It is a three-dimensional schematic view of an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention after removing the machine shell and the scraper.

[0030] Figure 12 It is Figure 11 a partial enlarged schematic view of the E position in an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention.

[0031] Figure 13 It is Figure 11 a partial enlarged schematic view of the F position in an outdoor intelligent advertising machine with an automatic safety debugging function according to the present invention.

[0032] The reference numerals in the figure are:

[0033] 1. Cabinet; 2. Screen; 3. Cleaning unit; 31. Sprinkler; 32. Scraper; 33. Drainage trough; 34. Lifting seat; 341. First limit block; 342. Second limit block; 343. First winding wheel; 344. First traction rope; 345. Second winding wheel; 346. Second traction rope; 347. Synchronous wheel; 348. Timing belt; 349. Rotary drive; 35. First reversing device; 351. First ratchet; 352. First rack; 353. First spring; 36. Magnet; 37. Second reversing device; 371. Second ratchet; 372. Second rack; 373. Second spring; 4. Linear drive. Detailed implementation mode

[0034] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation modes.

[0035] Refer to Figures 1 - 4 : An outdoor intelligent advertising machine with an automatic safety debugging function, including a cabinet 1 and a screen 2 arranged on the cabinet 1; a linear drive 4 for driving the screen 2 to move horizontally is horizontally arranged in the cabinet 1. When the screen 2 stops moving, it has a retracted state and an extended state. When the screen 2 is in the retracted state, the end face of the screen 2 facing the outside is located inside the cabinet 1. A cleaning unit 3 is arranged in the cabinet 1. The cleaning unit 3 includes a sprinkler 31 for spraying water on the screen 2 when it is in the retracted state; when the screen 2 is in the extended state, the end face of the screen 2 facing the outside is coplanar with the side wall end face of the cabinet 1.

[0036] Existing outdoor intelligent advertising machines are mainly composed of a cabinet 1 and a screen 2. The screen 2 is usually fixedly arranged on the side wall of the cabinet 1. Due to the influence of the use environment of outdoor intelligent advertising machines, after being used for a period of time, a layer of dust usually adheres to the surface of outdoor intelligent advertising machines, resulting in blurred pictures and texts displayed on the screen 2. Therefore, it is necessary to regularly clean outdoor intelligent advertising machines. Existing cleaning methods mostly use manual cleaning, but outdoor intelligent advertising machines are usually widely distributed, and manual cleaning has low efficiency and high working intensity. In order to improve the cleaning effect, some existing outdoor intelligent advertising machines are equipped with cleaning equipment on the periphery, but the installed cleaning equipment will surround the screen 2, making the screen 2 present a sunken state. The vision of pedestrians when observing outdoor intelligent advertising machines will be blocked by the cleaning equipment, and the display angle that the screen 2 can cover during operation is reduced. Since the screen 2 only needs to be cleaned regularly and does not need to be kept clean at all times, the existing cleaning equipment directly sleeved around the screen 2 has a greater impact on the normal operation of the screen 2.

[0037] To avoid the above situation, the structure of the existing outdoor intelligent advertising machine is redesigned. The cleaning unit 3 for cleaning the screen 2 is installed into the cabinet 1, and at the same time, the screen 2 can move horizontally. When the screen 2 retracts into the cabinet 1, the cleaning unit 3 will clean the screen 2. When the screen 2 is in the extended state, the end face of the screen 2 facing the outside is coplanar with the side wall end face of the cabinet 1, and the cleaning unit 3 does not surround the screen 2 on all sides, so that the screen 2 can be automatically cleaned regularly, and at the same time, the display angle during operation is not limited by the cleaning unit 3. The specific structure and working process of the present invention are as follows:

[0038] The linear driver 4 is preferably a linear electric cylinder. During daily use, the output end of the linear driver 4 is in the extended state, and the screen 2 is also in the extended state. The end face of the screen 2 facing the outside is coplanar with the side wall end face of the cabinet 1. At this time, the cleaning unit 3 provided in the cabinet 1 does not block the periphery of the screen 2, and the display angle of the screen 2 will not be limited due to the occlusion of the cleaning unit 3 during normal operation. After using for a period of time, the end face of the screen 2 facing the outside will be covered with dust. For the convenience of subsequent description, the end face of the screen 2 facing the outside is called the display end face. Subsequently, the linear driver 4 drives the screen 2 to retract horizontally into the cabinet 1, and the cleaning unit 3 provided in the cabinet 1 starts to clean the display end face of the screen 2. The water sprayer 31 sprays water flow on the display end face of the screen 2, and the water flow flushes the dust attached to the display end face of the screen 2. The water flow sprayed on the display end face flows from top to bottom. After the cleaning is completed, the water sprayer 31 stops spraying water, and the linear driver 4 pushes the screen 2 horizontally out, so that the display end face of the screen 2 is coplanar with the side wall end face of the cabinet 1.

[0039] By installing the cleaning unit 3 for cleaning the screen 2 into the cabinet 1, and at the same time enabling the screen 2 to move horizontally, when the screen 2 retracts into the cabinet 1, the cleaning unit 3 will clean the screen 2. After the screen 2 is cleaned, the screen 2 will extend again. When the screen 2 is in the extended state, the end face of the screen 2 facing the outside is coplanar with the side wall end face of the cabinet 1, and the cleaning unit 3 does not surround the screen 2 on all sides, so that the screen 2 can be automatically cleaned regularly, and at the same time, the display angle during operation is not limited by the cleaning unit 3.

[0040] Refer to Figure 4 and Figure 8 : The cleaning unit 3 further includes a squeegee 32 that moves vertically. The end face of the screen 2 facing the outside is called the display end face. When the screen 2 is in the retracted state, the squeegee 32 is in sliding fit with the display end face.

[0041] Refer to Figures 1 - 13When the squeegee 32 moves downward from top to bottom, the squeegee 32 is in a horizontal state, and the end of the squeegee 32 is in sliding fit with the display end face. When the squeegee 32 moves upward from bottom to top, the squeegee 32 is in a downward inclined state, and the squeegee 32 is disengaged from contact with the display end face.

[0042] By providing the squeegee 32, when the cleaning unit 3 cleans the display end face of the screen 2, first, the water sprayer 31 sprays water on the display end face. The squeegee 32 is in a downward inclined state. Subsequently, the water sprayer 31 stops spraying water, and the squeegee 32 moves downward from top to bottom. At this time, the squeegee 32 switches from the downward inclined state to the horizontal state. When the squeegee 32 slides relative to the display end face, it bends. The end of the squeegee 32 facing the display end face bends upward. When the squeegee 32 completely sweeps the display end face of the screen 2 during the descending process, the squeegee 32 starts to rise. The squeegee 32 switches from the horizontal state to the downward inclined state. When the squeegee 32 passes over the display end face of the screen 2, the squeegee 32 is disengaged from contact with the display end face. At this time, the water sprayer 31 sprays water again. When the squeegee 32 rises to the highest position, the water sprayer 31 stops spraying water. Subsequently, the squeegee 32 descends again. The squeegee 32 switches from the downward inclined state to the horizontal state, and this process repeats. It should be noted that when the squeegee 32 starts to descend from the highest position, the squeegee 32 switches from the downward inclined state to the horizontal state. When the squeegee 32 just switches to the horizontal state, the end of the squeegee 32 facing the display end face bends downward. As the squeegee 32 moves downward from top to bottom, the squeegee 32 bends further. Finally, the end of the squeegee 32 facing the display end face bends upward. The bending principle of the squeegee 32 is the same as that of an automobile windshield wiper.

[0043] By providing the squeegee 32, the squeegee 32 and the water sprayer 31 cooperate with each other to clean the display end face of the screen 2. First, the water sprayer 31 sprays water on the display end face of the screen 2. Subsequently, the squeegee 32 descends. During the descending process of the squeegee 32, it switches from the downward inclined state to the horizontal state. The end of the squeegee 32 facing the display end face is in sliding fit with the display end face. The squeegee 32 scrapes off the water stains and dirt attached to the display end face during the descending process. At the same time, during the ascending process, the squeegee 32 switches from the horizontal state to the downward inclined state. The squeegee 32 does not come into contact with the display end face, avoiding the squeegee 32 coating some water stains onto the display end face. At the same time, when multiple cleanings are required, the downward inclined squeegee 32 does not obstruct the water flow sprayed by the water sprayer 31 during the ascending process, ensuring that the water can flow smoothly from the display end face.

[0044] Refer to Figure 3 The cleaning unit 3 further includes a drainage groove 33, and the drainage groove 33 is located below the screen 2 in the retracted state.

[0045] When the water sprayer 31 sprays water on the display end face of the screen 2, the water flow flows down on the display end face and is received by the drain trough 33, avoiding the situation where the water flow randomly flows into the casing 1, and further avoiding the influence of the water flow for cleaning the screen 2 on the electronic components in the casing 1 after flowing into the casing 1.

[0046] Refer to Figures 9 - 13 : Lifting seats 34 capable of driving the squeegee 32 to move synchronously in the vertical direction are respectively arranged at both ends of the squeegee 32. A first limiting block 341 for limiting the squeegee 32 in a horizontal state is horizontally and fixedly arranged on the lifting seat 34, and a second limiting block 342 for limiting the squeegee 32 in a downward inclined state is obliquely and fixedly arranged on the lifting seat 34.

[0047] A first winding wheel 343 is rotatably arranged above the lifting seat 34, and a second winding wheel 345 is rotatably arranged below the lifting seat 34. A first traction rope 344 with one end fixedly connected to the upper part of the lifting seat 34 is wound on the first winding wheel 343, and a second traction rope 346 with one end fixedly connected to the lower part of the lifting seat 34 is wound on the second winding wheel 345. Three synchronous wheels 347 are arranged in the casing 1, and the three synchronous wheels 347 are arranged in a triangular structure. Two of the synchronous wheels 347 are respectively fixedly arranged at the ends of the first winding wheel 343 and the second winding wheel 345. A synchronous belt 348 is sleeved outside the three synchronous wheels 347, and the synchronous belt 348 is in transmission cooperation with the three synchronous wheels 347. The remaining one synchronous wheel 347 is not fixedly connected to the first winding wheel 343 and the second winding wheel 345. A rotary driver 349 for driving the synchronous wheel 347 to rotate is arranged at the end of the synchronous wheel 347. The rotary driver 349 is preferably a servo motor. When the rotary driver 349 operates, when the first winding wheel 343 winds, the second winding wheel 345 unwinds synchronously; conversely, when the first winding wheel 343 unwinds, the second winding wheel 345 winds synchronously, thereby achieving the effect of driving the lifting seat 34 to lift in the vertical direction.

[0048] Refer to Figure 10 : The cleaning unit 3 includes a first reversing device 35 arranged on the upper layer of the casing 1. The first reversing device 35 includes a first rack 352 vertically arranged on the casing 1. The teeth on the first rack 352 all incline upward. A first ratchet wheel 351 that rotates synchronously with the squeegee 32 is fixedly arranged at the end of the squeegee 32. When the squeegee 32 descends, the first ratchet wheel 351 meshes with the first rack 352.

[0049] Refer to Figure 10 : A first spring 353 is horizontally arranged on the side of the first rack 352 away from the first ratchet wheel 351.

[0050] When the scraping plate 32 rises to one side of the first reversing device 35, the first ratchet wheel 351 contacts the first rack 352. However, at this time, the first ratchet wheel 351 and the first rack 352 are in a non-engaged state. Since the teeth on the first rack 352 are all inclined upward, when the first ratchet wheel 351 contacts the first rack 352, as the scraping plate 32 continues to rise, the first ratchet wheel 351 pushes the first rack 352 in the horizontal direction. When the first rack 352 is pushed, the first spring 353 is compressed. It should be noted that at this time, the scraping plate 32 is in a downward inclined state, and the lower end surface of the scraping plate 32 abuts against the second limiting block 342, and the second limiting block 342 limits the scraping plate 32. When the scraping plate 32 rises and the first ratchet wheel 351 contacts the first rack 352, the first ratchet wheel 351 will generate a rotational thrust on the first ratchet wheel 351 during the process of pushing the first rack 352 away, causing the scraping plate 32 to rotate towards the second limiting block 342. However, due to the limitation of the second limiting block 342, it is ensured that the scraping plate 32 will not rotate further. When the scraping plate 32 rises to the highest position, if it is necessary to clean the display end surface of the screen 2 again at this time, the scraping plate 32 descends in the vertical direction. At this time, the first rack 352 meshes with the first ratchet wheel 351. Under the action of the first rack 352, the first ratchet wheel 351 starts to drive the scraping plate 32 to rotate synchronously, and the scraping plate 32 rotates towards the first limiting block 341, so that the scraping plate 32 is switched from the downward inclined state to the horizontal state.

[0051] Refer to Figure 8 and Figure 12 : A magnet 36 for fixedly connecting the two lifting seats 34 is arranged between the two lifting seats 34. The magnet 36 is arranged in a horizontal state, and an iron sheet that can be magnetically attracted by the magnet 36 is arranged on the upper part of the scraping plate 32.

[0052] When the scraping plate 32 descends, the first ratchet wheel 351 starts to rotate under the action of the first rack 352, and the scraping plate 32 is switched from the downward inclined state to the horizontal state. At this time, the magnet 36 adsorbs the iron sheet arranged on the scraping plate 32. At the same time, the first ratchet wheel 351 and the first rack 352 are disengaged from meshing, and the magnet 36 restricts the scraping plate 32 provided with the iron sheet in the horizontal state, avoiding the scraping plate 32 from starting to swing downward due to its own weight after the first ratchet wheel 351 and the first rack 352 are disengaged. After the scraping plate 32 is in the state limited by the magnet 36 and continues to descend, the end of the scraping plate 32 facing the screen 2 bends downward. However, due to the frictional force generated after the end of the scraping plate 32 contacts the display end surface of the screen 2, as the scraping plate 32 continues to descend, the originally downward-bent end of the scraping plate 32 will gradually bend further until the end of the scraping plate 32 facing the screen 2 bends upward. The scraping plate 32 is made of natural rubber material.

[0053] Refer to Figure 5 and Figure 6: A second reversing device 37 is provided in the lower layer of the housing 1. The second reversing device 37 includes a vertically arranged second rack 372. A second ratchet 371 is also provided at the end of the scraper 32. The teeth on the second rack 372 all slope downwards. When the scraper 32 rises, the second ratchet 371 meshes with the second rack 372.

[0054] Refer to Figure 6 : A second spring 373 is provided on the side of the second rack 372 away from the second ratchet 371.

[0055] When the scraper 32 descends, the second ratchet 371 descends with the scraper 32 and contacts the second rack 372. Since the teeth on the second rack 372 all slope downwards, the second ratchet 371 cannot mesh with the second rack 372 at this time. When the second ratchet 371 descends with the scraper 32, it intermittently pushes the second rack 372 in the horizontal direction. When the second rack 372 is pushed, the second spring 373 is compressed. At this time, the scraper 32 is in a horizontal state. At this time, the lifting force generated when the second ratchet 371 contacts the second rack 372 presses the scraper 32 against the first limit block 341. When the scraper 32 finishes descending and starts to rise, the second ratchet 371 meshes with the second rack 372, and the second ratchet 371 starts to rotate driven by the second rack 372. The second ratchet 371 drives the scraper 32 to break away from the adsorption of the magnet 36 and rotate downwards and tilt. When the second ratchet 371 disengages from the second rack 372, the scraper 32 rests on the second limit block 342 by its own gravity. The end of the downwardly tilted scraper 32 will not contact the display end face, and the water flow sprayed by the water sprayer 31 can smoothly flow into the drain tank 33.

[0056] Working principle: During daily use, the output end of the linear actuator 4 is in the extended state, and the screen 2 is also in the extended state. The end face of the screen 2 facing the outside is coplanar with the side wall end face of the housing 1. At this time, the cleaning unit 3 provided in the housing 1 does not block the periphery of the screen 2, and the screen 2 will not be limited in the display angle due to the occlusion of the cleaning unit 3 during normal operation. After using for a period of time, the end face of the screen 2 facing the outside will be covered with dust. For the convenience of subsequent description, the end face of the screen 2 facing the outside is referred to as the display end face. Subsequently, the linear actuator 4 drives the screen 2 to retract into the housing 1 in the horizontal direction, and the cleaning unit 3 provided in the housing 1 starts to clean the display end face of the screen 2. The water sprayer 31 sprays water flow on the display end face of the screen 2, and the water flow flushes the dust attached to the display end face of the screen 2. The water flow sprayed on the display end face flows from top to bottom. The scraper 32 is in a downward inclined state. Subsequently, the water sprayer 31 stops spraying water, and the scraper 32 moves from top to bottom. At this time, the scraper 32 switches from the downward inclined state to the horizontal state. When the scraper 32 slides relative to the display end face, it bends. The end of the scraper 32 facing the display end face bends upward. When the scraper 32 completely sweeps the display end face of the screen 2 during the descending process, the scraper 32 starts to rise, and the scraper 32 switches from the horizontal state to the downward inclined state. When the scraper 32 passes through the display end face of the screen 2, the scraper 32 is separated from the display end face. At this time, the water sprayer 31 sprays water again. When the scraper 32 rises to the highest position, the water sprayer 31 stops spraying water. Subsequently, the scraper 32 descends again, and the scraper 32 switches from the downward inclined state to the horizontal state, repeating in a cycle.

[0057] After the cleaning is completed, the water sprayer 31 stops spraying water, and the linear actuator 4 pushes the screen 2 out in the horizontal direction, so that the display end face of the screen 2 is coplanar with the side wall end face of the housing 1.

[0058] The above embodiments only represent one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An outdoor intelligent advertising machine with an automatic safety debugging function, comprising a machine case and a screen arranged on the machine case; It is characterized in that A linear driver for driving the screen to move horizontally is horizontally arranged in the machine case. The screen has a retracted state and an extended state when the movement stops. When the screen is in the retracted state, the end face of the screen facing the outside is located inside the machine case. A cleaning unit is arranged inside the machine case. The cleaning unit includes a water sprayer for spraying water on the screen in the retracted state. When the screen is in the extended state, the end face of the screen facing the outside is coplanar with the side wall end face of the machine case.

2. The outdoor intelligent advertising machine with an automatic safety debugging function according to claim 1, characterized in that, The cleaning unit further includes a scraper moving vertically. The end face of the screen facing the outside is called the display end face. When the screen is in the retracted state, the scraper is slidably engaged with the display end face.

3. An outdoor intelligent advertising machine with an automatic safety debugging function according to claim 2, characterized in that, When the scraper moves downward, the scraper is in a horizontal state, and the end of the scraper is slidably engaged with the display end face. When the scraper moves upward, the scraper is in a downward inclined state, and the scraper is disengaged from contact with the display end face.

4. An outdoor intelligent advertising machine with an automatic safety debugging function according to claim 1, wherein, The cleaning unit further includes a drainage trough located below the screen in the retracted state.

5. An outdoor intelligent advertising machine with an automatic safety debugging function according to claim 3, characterized in that, Lifting seats capable of driving the scraper to move synchronously in the vertical direction are respectively arranged at both ends of the scraper. A first limit block for limiting the scraper in the horizontal state is horizontally and fixedly arranged on the lifting seat. A second limit block for limiting the scraper in the downward inclined state is also inclined and fixedly arranged on the lifting seat.

6. An outdoor intelligent advertising machine with an automatic safety debugging function according to claim 5, characterized in that, The cleaning unit includes a first reversing device arranged on the upper layer of the machine case. The first reversing device includes a first rack vertically arranged on the machine case. The teeth on the first rack all incline upward. A first ratchet wheel rotating synchronously with the scraper is fixedly arranged at the end of the scraper. When the scraper descends, the first ratchet wheel meshes with the first rack.

7. An outdoor intelligent advertising machine with an automatic safety debugging function according to claim 6, characterized in that A first spring is horizontally arranged on the side of the first rack away from the first ratchet wheel.

8. An outdoor intelligent advertising machine with an automatic safety debugging function according to claim 7, characterized in that, A magnet for fixedly connecting the two lifting seats is arranged between the two lifting seats. The magnet is arranged in a horizontal state. An iron sheet capable of being magnetically attracted by the magnet is arranged on the upper part of the scraper.

9. The outdoor intelligent advertising machine with an automatic safety debugging function according to claim 6, wherein, A second reversing device is arranged on the lower layer of the machine case. The second reversing device includes a second rack arranged vertically. A second ratchet wheel is also arranged at the end of the scraper. The teeth on the second rack all incline downward. When the scraper ascends, the second ratchet wheel meshes with the second rack.

10. An outdoor intelligent advertising machine with an automatic safety debugging function according to claim 9, characterized in that, A second spring is arranged on the side of the second rack away from the second ratchet wheel.

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