CN111653208A

CN111653208A - Automatic folding and unfolding system applied to outdoor folding LED display screen and control method thereof

Info

Publication number: CN111653208A
Application number: CN201911426121.1A
Authority: CN
Inventors: 张海政; 张远齐; 李文; 梁文彬; 邓小彪; 梁启金
Original assignee: Guangzhou Leafun Culture Science and Technology Co Ltd
Current assignee: Guangzhou Leafun Culture Science and Technology Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-11

Abstract

The utility model provides an automatic receive and release system and control method for outdoor folding LED display screen, its strutting arrangement includes the bracing piece, bear frame and mount, the bracing piece is vertical to be set up, the mount is located and bears the frame top and with bear the frame interval setting, folding display screen locates and bears between frame and the mount, and the polylith display element of folding display screen can fold each other or expand, actuating mechanism sets firmly in the mount and is connected with the display element who is located the top, the controller is connected with actuating mechanism electricity, be used for acquireing the wind speed signal that bears the weight of current environment wind speed and send this wind speed signal to actuating mechanism, actuating mechanism is used for folding each other or expand according to the polylith display element of this wind speed signal drive folding display screen. According to the automatic folding and unfolding system and the control method thereof, the folding display screen can be folded in time when the weather is strong wind, and the problem of safety accidents caused by collapse of the supporting device is solved.

Description

Automatic folding and unfolding system applied to outdoor folding LED display screen and control method thereof

Technical Field

The invention relates to the technical field of folding display screens, in particular to an automatic folding and unfolding system applied to an outdoor folding LED display screen and a control method thereof.

Background

At present, most outdoor folding LED display screen generally all fixes at outdoor eminence through the support frame on the market, consequently, outdoor folding LED display screen's use receives outdoor environment's restriction usually, for example when strong wind weather appears, if not in time pack up the LED display screen, outside wind power is used in the LED display screen of expansion state, probably causes the LED display screen damaged, even probably causes the whole support frame that supports the LED display screen to overturn, thereby causes serious incident. Therefore, in order to avoid safety accidents, when the weather is strong wind, the LED display screen is usually folded by field workers in an emergency, so as to avoid safety accidents such as the LED display screen is damaged or the support frame is overturned.

However, the way of manually folding up the LED display screen does not have real-time performance, so that the situation that the LED display screen cannot be immediately folded up at the moment when the LED display screen bears the maximum wind pressure still exists, and the occurrence of safety accidents cannot be completely avoided.

Disclosure of Invention

The embodiment of the invention discloses an automatic folding and unfolding system applied to an outdoor folding LED display screen and a control method thereof, which can fold up the folding display screen in time when strong wind weather occurs, thereby effectively solving the problem of safety accidents caused by the collapse of a support frame of the folding display screen.

In order to achieve the above object, in a first aspect, an embodiment of the present invention provides an automatic folding and unfolding system applied to an outdoor foldable LED display screen, including:

the supporting device comprises a supporting rod, a bearing frame and a fixing frame, wherein the supporting rod is vertically arranged, the bearing frame is arranged on the supporting rod and is perpendicular to the supporting rod, and the fixing frame is vertically arranged on the supporting rod, is positioned above the bearing frame and is arranged at intervals with the bearing frame;

the foldable display screen is arranged between the bearing frame and the fixing frame and comprises a plurality of display units which are arranged up and down relatively, two adjacent display units are hinged and connected, and the display unit positioned at the bottommost part is connected with the bearing frame;

the driving mechanism is fixedly arranged on the fixed frame and is connected with the display unit positioned at the topmost part;

the controller is electrically connected with the driving mechanism and used for acquiring a speed signal bearing current ambient wind speed and wind and sending the wind speed signal to the driving mechanism, and the driving mechanism is used for driving a plurality of display units of the folding display screen to be mutually folded or mutually unfolded according to the wind speed signal; and

and the monitoring device is used for synchronously playing the synchronous demonstration animations of the plurality of display units of the folding display screen which are mutually folded or mutually unfolded.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, an air speed measurer is disposed on the foldable display screen, and the air speed measurer is electrically connected to the controller, and is configured to measure a current ambient air speed and send the air speed signal carrying the current ambient air speed to the controller.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, a displacement sensor is disposed on the foldable display screen, the displacement sensor is electrically connected to the monitoring device, the displacement sensor is configured to measure a real-time height of the display unit located at the topmost position and send a corresponding height signal to the monitoring device, and the monitoring device is configured to play a synchronous demonstration animation in which a plurality of display units of the foldable display screen are folded or unfolded with respect to each other according to the corresponding height signal.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, the driving mechanism includes a driving motor and a first rope, the driving motor is disposed on the top of the fixed frame, and the driving motor is electrically connected to the wind speed measuring device, a rotating shaft of the driving motor is fixedly provided with a movable pulley, one end of the first rope is wound around the movable pulley, and the other end of the first rope is fixedly connected to the display unit located at the topmost part;

the driving motor is used for driving the movable pulley rotates to drive the first rope to be opposite to the movable pulley for tensioning or loosening, and the first rope is used for enabling the display units of the folding display screen to be mutually unfolded or mutually folded.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, there are two driving motors, two first ropes are provided corresponding to the two driving motors, the two driving motors are arranged side by side at an interval in a middle position of a top portion of the fixing frame, and the other ends of the two first ropes are fixed to the topmost display unit at an interval.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, the fixing frame is an elongated truss, a length direction of the fixing frame is a horizontal direction perpendicular to the supporting rod, the fixing frame includes a front surface and a bottom surface perpendicular to the front surface, and the front surface is in the same direction as a display surface of each display unit;

the driving mechanism further comprises two first fixed pulley blocks, the two first fixed pulley blocks are respectively arranged corresponding to the two first ropes, the two first fixed pulley blocks are arranged at the middle position of the bottom surface of the fixed frame at intervals in the horizontal direction, and each first rope is wound to each first fixed pulley block from each movable pulley.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, a width direction of the fixing frame is a direction perpendicular to the vertical direction and the horizontal direction, each of the first fixed pulley groups includes at least two fixed pulleys, in the width direction of the fixing frame, the two fixed pulleys are fixedly arranged on the bottom surface of the fixing frame at intervals, and the two fixed pulleys are a first fixed pulley and a second fixed pulley respectively;

each movable pulley comprises a first winding part and a second winding part, the second winding part and the first winding part are arranged side by side, the first rope is wound on the first winding part, and the other end of the first rope is wound on the first fixed pulley and is connected with the topmost display unit;

the driving mechanism further comprises two second ropes and two third fixed pulleys, the two second ropes are respectively corresponding to the two driving motors, the two third fixed pulleys are respectively corresponding to the two second ropes and arranged in the horizontal direction, the two first fixed pulleys are located between the two third fixed pulleys, one end of each second rope is wound on the second winding portion, and the other end of each second rope is sequentially wound on the second fixed pulleys and the third fixed pulleys and is connected with the display unit at the top.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, there are two support rods, the two support rods are disposed at an interval, and the fixing frame is fixedly disposed at the top end of the support rod.

In a second aspect, the embodiment of the invention provides a control method of an automatic folding and unfolding system applied to an outdoor folding LED display screen, the automatic folding and unfolding system includes a supporting device, a folding display screen, a driving mechanism, a controller and a monitoring device, the supporting device includes a supporting rod, a bearing frame and a fixing frame, the supporting rod is vertically arranged, the bearing frame is arranged on the supporting rod and is perpendicular to the supporting rod, the fixing frame is vertically arranged on the supporting rod and is located above the bearing frame and is spaced from the bearing frame, the folding display screen is arranged between the bearing frame and the fixing frame, the folding display screen includes a plurality of display units which are arranged relatively up and down, two adjacent display units are hinged with each other, the display unit located at the bottommost is connected to the bearing frame, the driving mechanism is fixedly arranged on the fixing frame and connected with the display unit positioned at the topmost part, the controller is electrically connected with the driving mechanism, and the control method comprises the following steps:

the controller acquires a wind speed signal bearing the current ambient wind speed of the folding display screen and sends the wind speed signal to the driving mechanism;

the driving mechanism drives a plurality of display units of the folding display screen to be mutually folded or mutually unfolded according to the wind speed signal;

and the monitoring device synchronously plays synchronous demonstration animations of the plurality of display units of the folding display screen which are mutually folded or mutually unfolded.

As an optional implementation manner, in an embodiment of the second aspect of the present invention, a displacement sensor is disposed on the foldable display screen, and the displacement sensor is electrically connected to the monitoring device;

the monitoring device synchronously plays a plurality of blocks of the folding display screen, and the synchronous demonstration animations that the display units are mutually folded or mutually unfolded specifically comprise:

when the driving mechanism drives a plurality of display units of the folding display screen to be mutually folded or mutually unfolded according to the wind speed signal, the displacement sensor measures the real-time height of the display unit positioned at the topmost part and sends the height signal to the monitoring device;

and the monitoring device synchronously plays the synchronous demonstration animations that the display units of the folding display screen are mutually folded or mutually unfolded according to the height signal.

As an alternative implementation, in the embodiment of the second aspect of the present invention, the synchronous demonstration animation is a real-time animation of folding the display screen during the upward movement or the downward movement of the topmost display unit, and the type of the synchronous demonstration animation includes at least two-dimensional, three-dimensional, panoramic or VR.

As an optional implementation manner, in an embodiment of the second aspect of the present invention, the driving mechanism includes a driving motor and a first rope, the driving motor is disposed on the top of the fixing frame and electrically connected to the controller, a rotating shaft of the driving motor is fixedly provided with a movable pulley, one end of the first rope is wound around the movable pulley, and the other end of the first rope is fixedly connected to the display unit located at the topmost part;

Compared with the prior art, the invention has the beneficial effects that:

according to the folding and unfolding system applied to the outdoor folding LED display screen and the control method thereof, the wind speed measurer is arranged on the folding display screen, so that the wind speed of the current environment of the folding display screen can be measured in real time and corresponding electric signals are sent to the driving mechanism, when the wind speed of the current environment of the folding display screen reaches or exceeds a preset wind speed value (10.8m/s), the driving mechanism can timely drive a plurality of display units of the folding display screen to be folded together, namely, when strong wind weather occurs, the folding and unfolding system can timely fold the folding display screen, so that the folding display screen can be effectively protected, and meanwhile, the problem of safety accidents caused by the fact that a support frame of the folding display screen collapses can be effectively solved.

In addition, in the control method provided by the invention, in the process of folding or unfolding the folding display screen, the monitoring device is used for synchronously playing the synchronous demonstration animation with the folding action or the unfolding action of the folding display screen, so that the folding and unfolding processes of the folding display screen can be monitored in real time, the monitoring instantaneity is improved, and the folding display screen can be smoothly folded or unfolded.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a folding and unfolding system of a folding LED display screen according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a folding and unfolding system when a folding LED display screen is folded according to an embodiment of the present invention;

FIG. 3 is a schematic view of the retraction system of FIG. 1 in an a-a orientation;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

FIG. 5 is a partial enlarged view at B in FIG. 3;

FIG. 6 is an enlarged view of a portion of FIG. 5 at C;

FIG. 7 is a schematic structural diagram of two adjacent display units according to an embodiment of the present invention when they are unfolded;

fig. 8 is a schematic structural diagram of two adjacent display units when they are folded according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a connection structure according to an embodiment of the present invention;

FIG. 10 is a schematic view of the connection structure of FIG. 9 from another perspective;

FIG. 11 is a schematic structural diagram of a first connecting component according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a second connecting part according to a first embodiment of the present invention;

fig. 13 is a flowchart of a control method according to a second embodiment of the present invention;

fig. 14 is a detailed flowchart of step 103 according to the second embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The invention discloses an automatic folding and unfolding system applied to an outdoor folding LED display screen and a control method thereof, which can fold up the folding display screen in time when strong wind weather occurs, thereby effectively protecting the folding display screen and simultaneously effectively solving the problem of safety accidents caused by the collapse of a support frame of the folding display screen.

The technical solution of the present invention will be further described with reference to the following embodiments and the accompanying drawings.

Example one

Referring to fig. 1 to 4 together, an embodiment of the present invention provides an automatic folding and unfolding system for an outdoor foldable LED display screen, which includes a supporting device, a foldable display screen 2, a driving mechanism 3, and a controller (not shown). Specifically, the supporting device includes a supporting rod 10, a bearing frame 11 and a fixing frame 12, wherein the supporting rod 10 is vertically disposed, the bearing frame 11 is disposed on the supporting rod 10, the bearing frame 11 is disposed perpendicular to the supporting rod 10, and the fixing frame 12 is disposed perpendicular to the supporting rod 10, above the bearing frame 11 and spaced apart from the bearing frame 11. The folding display screen 2 is arranged between the bearing frame 11 and the fixing frame 12, the folding display screen 2 comprises a plurality of display units 20 which are arranged up and down relatively, the two adjacent display units 20 are connected in a hinged mode, and the display unit 20 located at the bottommost portion is connected to the bearing frame 11.

The driving mechanism 3 is fixedly arranged on the fixed frame 12 and connected with the display unit 20 positioned at the topmost part, the controller is electrically connected with the driving mechanism 3 and used for acquiring a wind speed signal bearing the current ambient wind speed and sending the wind speed signal to the driving mechanism 3, and the driving mechanism 3 is used for driving the display units 20 of the folding display screen 2 to be mutually folded or mutually unfolded according to the wind speed signal.

As an optional implementation manner, the controller may send a positioning signal carrying positioning information of the area where the foldable display screen 2 is located to the meteorological platform, and when the meteorological platform receives the positioning signal, the meteorological platform obtains the current wind speed of the area where the foldable display screen 2 is located according to the positioning information, and feeds the current wind speed of the area where the foldable display screen 2 is located back to the controller, so that the controller may obtain a wind speed signal carrying the current ambient wind speed.

As another alternative, an anemometer (not shown) may be disposed on the foldable display screen 2. The wind speed measurer can be electrically connected with the controller and is used for measuring the wind speed of the current environment and sending a wind speed signal bearing the wind speed of the current environment to the controller, so that the controller can acquire the wind speed signal bearing the wind speed of the current environment.

Preferably, the present invention is provided with an anemometer on the folding display screen 2.

For example: when the plurality of display units 20 of the foldable display screen 2 are mutually unfolded, that is, when the foldable display screen 2 is in the unfolded state, if the wind speed measurer measures that the wind speed of the current environment reaches 10.8m/s or more than 10.8m/s, the wind speed measurer sends a wind speed signal carrying the wind speed of the current environment to the controller, and then the controller sends the wind speed signal to the driving mechanism 3, so that the driving mechanism 3 drives the plurality of display units 20 of the foldable display screen 2 to be mutually folded together to fold the foldable display screen 2. On the contrary, when the plurality of display units 20 of the foldable display screen 2 are folded with each other, that is, when the foldable display screen 2 is in the folded state, if the wind speed measurer measures that the wind speed of the current environment is lower than 10.8m/s, the wind speed measurer sends a wind speed signal carrying the current environment wind speed to the controller, and then the controller sends the wind speed signal to the driving mechanism 3, so that the driving mechanism 3 drives the plurality of display units 20 of the foldable display screen 2 to be unfolded with each other, so as to unfold the foldable display screen 2.

It will be appreciated that in other embodiments the anemometer may also send a wind speed signal carrying the current ambient wind speed directly to the drive mechanism 3.

Wherein, the mutual unfolding of the plurality of display units 20 of the foldable display screen 2 can mean: the plurality of display units 20 of the folding display screen 2 are unfolded in line; the plurality of display units 20 of the foldable display screen 2 are folded with each other may mean: the plurality of display units 20 of the display screen 2 are folded to be approximately stacked.

By adopting the scheme, the wind speed of the current environment of the folding display screen 2 can be measured in real time based on the wind speed measurer, and the corresponding electric signal is sent to the driving mechanism 3, when the wind speed of the current environment of the folding display screen 2 reaches or exceeds a preset wind speed value (10.8m/s), the driving mechanism 3 can timely drive the display units 20 of the folding display screen 2 to be folded together, namely, when strong wind weather occurs, the automatic folding and unfolding system can timely fold the folding display screen 2, so that the folding display screen 2 can be effectively protected, and meanwhile, the problem of safety accidents caused by the fact that the support frame of the folding display screen 2 collapses can be effectively solved. Therefore, in this embodiment, in order to grasp the folding and unfolding conditions of the foldable display screen 2 in real time, the folding and unfolding process of the foldable display screen 2 is usually monitored in real time, and the automatic folding and unfolding system further includes a monitoring device, which can be used to synchronously play the synchronous demonstration animation in which the plurality of display units 20 of the foldable display screen 2 are folded or unfolded.

The monitoring device may be a background server, which includes a display screen, and the display screen may be used to display the above mentioned synchronous demonstration animation.

Specifically, a displacement sensor is arranged on the folding display screen 2. The displacement sensor is electrically connected with the monitoring device, and the displacement sensor can be used for measuring the real-time height of the display unit 20 positioned at the topmost part and sending a corresponding height signal to the monitoring device, and the monitoring device can be used for playing synchronous demonstration animations that a plurality of display units 20 of the folding display screen 2 are mutually folded or mutually unfolded according to the corresponding height signal.

For example: when the wind speed measurer measures that the wind speed of the current environment reaches 10.8m/s or more than 10.8m/s, the driving mechanism 3 can drive the plurality of display units 20 of the folding display screen 2 to be folded together, so as to pack the folding display screen 2, meanwhile, the displacement sensor measures the real-time height of the display unit 20 positioned at the topmost part and sends a corresponding height signal to the monitoring device, and therefore the monitoring device can play and pack the synchronous demonstration animation of the folding display screen 2 according to the corresponding height signal. So, pack up when folding display screen 2, can carry out real time monitoring to it, if the condition that can't pack up folding display screen 2 completely appears in the in-process of packing up folding display screen 2, also can be convenient for the staff in time discover and can in time maintain it to ensure that folding display screen 2 can pack up smoothly.

Similarly, when the driving mechanism 3 drives the plurality of display units 20 of the foldable display screen 2 to be unfolded to unfold the foldable display screen 2, the monitoring device can simultaneously play the synchronous demonstration animation that the plurality of display units 20 of the foldable display screen 2 are unfolded, and the process of synchronously playing the synchronous demonstration animation is similar to the process of synchronously playing the synchronous demonstration animation when the foldable display screen 2 is folded, so that the description is omitted.

Wherein, the synchronous demonstration animation may be a real-time animation of the folding display screen 2 during the upward movement or downward movement of the display unit 20 located at the topmost part, for example, assuming that when the folding display screen 2 is unfolded, the distance height of the display unit located at the topmost part relative to the display unit located at the bottommost part is 13m, and during the process of folding the folding display screen 2, the display unit located at the topmost part moves downward, specifically, the display unit located at the topmost part moves downward by 3m, then the displacement sensor measures the distance height of the display unit located at the topmost part relative to the display unit located at the bottommost part to be 10m, and then the height signal carrying the display unit located at the topmost part moving downward by 3m is sent to the monitoring device, so that the display screen of the monitoring device plays the animation of the folding display screen 2 in which the display unit located at the topmost part moves downward by 3m, i.e. the monitor's display will play an animation of the folded display 2 having a height of 10m from the topmost display unit to the bottommost display unit.

Further, the type of the synchronized presentation animation may include at least two-dimensional, three-dimensional, panoramic, or VR.

By adopting the scheme, in the process of folding or unfolding the folding display screen 2, the monitoring device is used for synchronously playing the synchronous demonstration animation with the folding action or the unfolding action of the folding display screen 2, the folding and unfolding processes of the folding display screen can be monitored in real time, the monitoring instantaneity is improved, and the folding display screen 2 can be smoothly folded or unfolded.

In this embodiment, in order to improve the load-bearing capacity of the support bar 10, two support bars 10 may be preferred. Specifically, two support rods 10 are disposed at intervals, wherein the fixing frame 12 is fixedly disposed at the top ends of the support rods 10.

Further, the fixing frame 12 is a long bar truss, the length direction of the fixing frame 12 is a horizontal direction x perpendicular to the support bar 10, and the width direction z of the fixing frame 12 is a direction perpendicular to the vertical direction y and the horizontal direction x. The fixing frame 12 includes a front surface and a bottom surface perpendicular to the front surface, wherein the front surface is oriented in the same direction as the display surface of each display unit 20.

That is, the support bar 10 is substantially located at the back of the fixing frame 12 and the loading frame 11 when set.

In the embodiment, the supporting frame 11 includes a supporting plate 111 and a plurality of first vertical bars 112. Specifically, the supporting board 111 extends from one of the supporting rods to the other supporting rod, and the plurality of first vertical rods 112 are disposed at the edge of the supporting board 111 and extend upward from the supporting board 111, and form a placing space by enclosing with the supporting board 111. The display unit 20 at the bottom is disposed in the placing space, and the display unit 20 at the bottom is connected to the supporting board 111 or the first vertical bar 112.

Further, in order to improve the carrying capacity of the loading frame 11, the bottom of the loading plate 111 is provided with an elongated truss 11 a.

As shown in fig. 3 to 6, in the present embodiment, in order for the driving mechanism 3 to drive the plurality of display units 20 of the foldable display screen 2 to be folded or unfolded from each other, the driving mechanism 3 includes a driving motor 30 and a first rope 31. Specifically, the driving motor 30 is disposed on the top of the fixing frame 12, the driving motor 30 is electrically connected to the wind speed measuring device, the rotating shaft 22 of the driving motor 30 is fixedly provided with a movable pulley 32, one end of the first rope 31 is wound around the movable pulley 32, and the other end of the first rope 31 is fixedly connected to the topmost display unit 20, so that the driving motor 30 can be used to drive the movable pulley 32 to rotate so as to drive the first rope 31 to tension or release the movable pulley 32, and thus the first rope 31 can be used to unfold or fold the plurality of display units 20 of the foldable display screen 2.

Further, the driving mechanism 3 further comprises two first fixed pulley sets 33. Specifically, the two first fixed pulley blocks 33 are respectively disposed corresponding to the two first ropes 31, and in the horizontal direction, the two first fixed pulley blocks 33 are disposed at the middle position of the bottom surface of the fixed frame 12 at intervals, and each first rope 31 is wound around each first fixed pulley block 33 from each movable pulley 32.

For example: if the rotating shaft 22 of the driving motor 30 rotates clockwise and the other end of the first rope 31 can move upward, the rotating shaft 22 of the driving motor 30 rotates clockwise and drives the movable pulley 32 to rotate clockwise, so that the first rope 31 wound around the movable pulley 32 can be tensioned with respect to the movable pulley 32, that is, the other end of the first rope 31 moves upward and pulls the topmost display unit 20 to move upward, so as to drive the plurality of display units 20 of the foldable display screen 2 to unfold. On the contrary, the rotating shaft 22 of the driving motor 30 can drive the movable pulley 32 to rotate counterclockwise while rotating counterclockwise, so that the first rope 31 wound on the movable pulley 32 can be loosened relative to the movable pulley 32, that is, the other end of the first rope 31 can move downward, at this time, the tensile force of the first rope 31 on the foldable display screen 2 is smaller than the gravity of the foldable display screen 2, and the foldable display screen 2 can be folded together with the display units 20 of the foldable display screen 2 under the action of its own gravity.

It will be appreciated that in other embodiments, the drive mechanism 3 may also comprise a power member and a telescopic rod. Specifically, one end of the telescopic rod is connected to the topmost display unit 20, the other end of the telescopic rod is connected to the power unit, and the power unit can be used to drive the telescopic rod to perform telescopic motion, so that the plurality of display units 20 of the foldable display screen 2 can be unfolded or folded.

As shown in fig. 1, 4 and 5, in the present embodiment, the driving motors 30 may preferably be two, and the first rope 31 may also be two corresponding to the two driving motors 30. Specifically, two driving motors 30 are arranged side by side at intervals at the middle position of the top of the fixed frame 12, and the other ends of the two first ropes 31 are fixed at intervals on the topmost display unit 20. More specifically, in the horizontal direction x, the driving motor 30 from left to right is a first driving motor and a second driving motor in sequence, wherein one first rope is located at the left side of the first driving motor, and the other first rope is located at the right side of the second driving motor, and the first driving motor and the second driving motor can be two driving motors with opposite rotation directions.

As shown in fig. 1, 4, 5 and 6, in the present embodiment, in order to ensure that the driving mechanism 3 has enough force to unfold the foldable display 2 and to unfold the foldable display 2 smoothly during unfolding of the foldable display 2, each first fixed pulley set 33 includes at least two fixed pulleys, and the driving mechanism 3 further includes two second ropes 34 and two third fixed pulleys 35. Specifically, in the width z direction of the fixed frame 12, two fixed pulleys are fixedly arranged on the bottom surface of the fixed frame 12 at intervals, and the two fixed pulleys are a first fixed pulley 33a and a second fixed pulley 33b, respectively. The two second ropes 34 are respectively disposed corresponding to the two driving motors 30, the two third fixed pulleys 35 are respectively disposed corresponding to the two second ropes 34, and the two first fixed pulleys 33a are located between the two third fixed pulleys 35 in the horizontal direction x.

More specifically, each of the movable pulleys 32 includes a first winding portion 321 and a second winding portion 322 disposed side by side with the first winding portion 321, the first rope 31 is wound around the first winding portion 321, and the other end of the first rope 31 is wound around the first fixed pulley and then connected to the topmost display unit 20. One end of the second rope 34 is wound around the second winding portion 322, and the other end of the second rope 34 is sequentially wound around the second fixed pulley and the third fixed pulley 35 and then connected to the topmost display unit 20.

It is to be noted that the number of each of the second ropes 34 in the two second ropes 34 may be one or more, and similarly, the number of each of the second winding portions 322 in the two second winding portions 322 may be one or more, and the number of each of the second fixed pulleys 33b in the two second fixed pulleys 33b may be one or more.

For example: if the number of each second rope 34 is 3, the number of each second winding portion 322 is 3 corresponding thereto, and similarly, the number of each second fixed pulley 33b is 3 corresponding thereto.

As shown in fig. 7 to 10, in the present embodiment, the front surface of each display unit 20 is the display surface of each display unit 20 (i.e., the front surface of each display unit 20 as shown in fig. 1), and the steel structure 4 is fixedly disposed on the back surface of each display unit 20. For the two display units 20 disposed up and down, the steel structure 4 on the lower display unit 20 is the first steel structure 40, and the steel structure 4 on the upper display unit 20 is the second steel structure 41.

In order to realize the hinge connection between two adjacent display units 20, the foldable display screen 2 further comprises a connection structure 2 a. Specifically, the connecting structure includes a first connecting part 20, a second connecting part 21 and a rotating shaft 22, the first connecting part 20 includes a first body portion 201 and a first connecting portion 202, the first body portion 201 is fixedly connected to the top of the first steel structure 40, the first connecting portion 202 is disposed on the first body portion 201, and the first connecting portion 202 is disposed with a first shaft hole 2021. The second connecting member 21 includes a second body portion 211 and a second connecting portion 212, the first body portion 201 is fixedly connected to the bottom of the second steel structure 41, the second connecting portion 212 is disposed on the second body portion 211, and the second connecting portion 212 is provided with a second shaft hole 2121. The rotating shaft 22 is fixedly connected with the first shaft hole 2021 and rotatably connected with the second shaft hole 2121, and the radius of the rotating shaft 22 is 6mm to 10mm, for example: 6mm, 7mm, 8mm, 9mm, 10mm, or the like.

The two adjacent display units 20 are connected by the above-mentioned connection structure, and when the foldable display screen 2 is in the unfolded state, the second coupling member 21 can abut against the first coupling member 20 due to the rotation shaft 22, so that the first and

second coupling members

20 and 21 may function to mainly support the foldable display screen 2, the rotation shaft 22 is located at the outer periphery of the first connecting part 20 and the second connecting part 21, and may be located at the front of the foldable display 2, as shown in fig. 7, therefore, the stress of the rotating shaft 22 can be reduced, and thus, the radius of the rotating shaft 22 can be controlled within the range of 6mm to 10mm, thereby reducing the distance between two adjacent display units 20, particularly enabling the distance between two adjacent display units 20 to reach 25 mm-30 mm, the definition of the folding display screen 2 can be effectively improved, so that the folding display screen 2 has a better display effect.

In addition, since the rotating shaft 22 is disposed on the front surface of the foldable display screen 2 (as shown in fig. 7) when the foldable display screen 2 is in the unfolded state, the first connecting portion 202 and the second connecting portion 212 can be prevented from colliding with the display unit 20 to damage the display unit 20 during the process of folding the foldable display screen 2.

In this embodiment, in order to ensure the strong bearing capacity of the connection structure, the material of the connection structure may preferably be steel. Specifically, the material of the first and

second connection members

20 and 21 may preferably be Q345 steel, and the material of the rotating shaft 22 may preferably be 304 stainless steel.

Further, in order to reduce the friction force against the rotating shaft 22 when the second connecting part 21 rotates relative to the first connecting part 20, a lubricating oil may be coated on the hole wall of the second shaft hole 2121, so that the rotation process of the second connecting part 21 can be made smoother, and the rotation of the second connecting part 21 can be facilitated.

As shown in fig. 7 and 8, in the present embodiment, in order to fix the first connection part 20 on the top of the first steel structure 40, the foldable display 2 further includes a first connection plate 23 and a first fastener 24. Specifically, a first through groove 2011 is formed in the first main body portion 201, a first through hole is formed in the first connecting plate 23 corresponding to the first through groove 2011, the first steel structure 4 includes a first upper surface and a first lower surface opposite to the first upper surface 401, the first main body portion 201 is attached to the first upper surface, the first connecting plate 23 is attached to the first lower surface, and the first through groove 2011 and the first through hole are penetrated by the first fastener 24, so that the first main body portion 201 is fixed to the top of the first steel structure 40.

The first fastening member 24 may be a bolt or a screw.

Further, as shown in fig. 7 and 10, in order to fix the first body portion 201 on the top of the first steel structure 41 more firmly, the first through grooves 2011 may preferably be four. Specifically, the four first through grooves 2011 are arranged in a square array on the first body portion 201. More specifically, the first through grooves 2011 may be four U-shaped through grooves, and each first through groove 2011 penetrates through the end surface of the first main body portion 201, so that the position of the first fastening member 24 relative to the first through groove 2011 can be conveniently adjusted, and therefore, the first fastening member 24 can be conveniently passed through the first through groove 2011 and the first through hole at the same time.

Similarly, as shown in fig. 7 and 8, the display panel further includes a second connecting plate 25 and a second fastening member 26 in order to fix the second connecting member 21 to the bottom of the second steel structure 41. Specifically, the second main body portion 211 is provided with a second through-groove 2111, the second connecting plate 25 is provided with a second through-hole corresponding to the second through-groove 2111, the second steel structure 4 includes a second lower surface and a second upper surface opposite to the second lower surface, the second main body portion 211 is attached to the second lower surface, the second connecting plate 25 is attached to the second upper surface, and the second fastening member 26 is inserted into the second through-groove 2111 and the second through-hole to fix the second main body portion 211 to the bottom of the second steel structure 41.

The second fastening member 26 can be a bolt or a screw.

Further, as shown in fig. 7 and 10, in order to more firmly fix the second body portion 211 to the top of the second steel structure 41, the second through grooves 2111 may preferably be four. Specifically, the four second through slots 2111 are arranged on the second main body portion 211 in a square arrangement, more specifically, the second through slots 2111 are four U-shaped through slots, and each second through slot 2111 penetrates through the end surface of the second main body portion 211, so that the position of the second fastening member 26 relative to the second through slot 2111 can be conveniently adjusted, and the second fastening member 26 can conveniently penetrate through the second through slot 2111 and the second through hole at the same time.

In the present embodiment, in order to improve the stability of the rotation of the second connection member 21 with respect to the first connection member 20, there are two first connection portions 202. Specifically, the two first connecting portions 202 are disposed on the first body portion 201 at intervals, and the second connecting portion 212 is located between the two first connecting portions 202, i.e., the second shaft hole 2121 is located between the two first shaft holes 2021.

As shown in fig. 9, 10 and 11, in this embodiment, the first main body portion 201 includes a first bottom plate 2012 and two first side plates 2013 disposed at two sides of the first bottom plate 2012, the two first side plates 2013 and the first bottom plate 2012 enclose to form a first space, the first bottom plate 2012 is attached to the first steel structure 40, specifically, to the first upper surface of the first steel structure 40, and the first through groove 2011 is specifically disposed on the first bottom plate 2012. Each first connection portion 202 includes a first fastening portion 2022 and a first axial connection portion 2023 connected to the first fastening portion 2022, wherein the first fastening portion 2022 is disposed on the first bottom plate 2012 and located in the first space, the first axial connection portion 2023 is located outside the first space, and the first axial connection portion 2023 is disposed with the first axial hole 2021.

In this patent, the first bottom plate 2012 may preferably be a square plate, such as: the first side plate 2013 may be a strip-shaped plate. It is understood that in other embodiments, the first bottom plate 2012 can be a prism plate, a circular plate, an oval plate, etc., and the first side plate 2013 can be a trapezoid plate, a square plate, etc.

Similarly, as shown in fig. 9, 10, and 12, the second body portion 211 of the present invention may include a second bottom plate 2112 and two second side plates 2113 disposed on two sides of the second bottom plate 2112, the two second side plates 2113 and the second bottom plate 2112 enclose to form a second space, the second bottom plate 2112 is attached to the bottom of the second steel structure 4, specifically to the second lower surface of the second steel structure 41, and the second through-slot 2111 is specifically disposed on the second bottom plate 2112. Each of the second connecting portions 212 includes a second fixing portion 2122 and a second connecting portion 2123 connected to the second fixing portion 2122, wherein the second fixing portion 2122 is disposed on the second base plate 2112 and located in the second space, the second connecting portion 2123 is located outside the second space, and the second connecting portion 2123 is provided with a second shaft hole 2121.

In this patent, the second bottom plate 2112 may preferably be a square plate, such as: a rectangular or square plate, and the second side panels 2113 may preferably be strip-shaped panels. It is understood that in other embodiments, the second bottom plate 2112 may be a prism plate, a circular plate, an oval plate, etc., and the second side plate 2113 may be a trapezoid plate, a square plate, etc.

In this embodiment, as shown in fig. 9 and 11, the first coupling portion 2023 includes a first portion 2024 and a second portion 2025 connected to the first portion 2024. The first portion 2024 extends upward from the first fastening portion 2022, and the second portion 2025 has a first axial hole 2021. Specifically, the first portion 2024 may be an elongated rod, the second portion 2025 may be a circular rod, and the second portion 2025 is coaxial with the first shaft hole 2021. Similarly, as shown in fig. 9 and 12, the second connecting portion 2123 can include a third portion 2124 and a fourth portion 2125 connected to the third portion 2124, wherein the third portion 2124 extends downward from the first fastening portion 2022, and the fourth portion 2125 has a second shaft hole 2121. Specifically, the first portion 2024 may be an elongated rod, the fourth portion 2125 may be a circular rod, and the fourth portion 2125 is coaxial with the second shaft hole 2121.

As can be seen from the above, in order to avoid the first axial portion 2023 and the second axial portion 2123 colliding with the display unit 20 and damaging the display unit 20 during the process of folding the foldable display screen 2, the rotating shaft 22 may be located on the front surface 201 of the foldable display screen 2 when the foldable display screen 2 is in the unfolded state (as shown in fig. 7). The method specifically comprises the following steps: when the foldable display screen 2 is in the unfolded state, the first main body portion 201 and the second main body portion 211 of the connection structure of the present invention can be relatively rotated into the folded state, that is, the second body portion 211 can be overlapped on the first body portion 201, and the first portion 2024 can extend from the first fastening portion 2022 to the back surface 202 of the display unit 20, and may extend through the gap between two adjacent display units 20 to the front face 202 of the display unit 20, so that the second portion 2025 can be located on the front side 201 of the display unit 20 and, as such, the third portion 2124 may extend from the second attachment portion 2122 towards the back side 202 of the display unit 20, and may extend to the front surface 201 of the display unit 20 through the gap between two adjacent display units 20, so that the fourth portion 2125 may be located on the front surface 201 of the display unit 20, so that the hinge 22 of the present invention can be positioned at the front of the foldable display 20 when the foldable display 2 is in the unfolded state.

As shown in fig. 8, when the foldable display screen 2 is in the folded state, the first main body portion 201 and the second main body portion 211 of the connection structure of the present invention are rotated and unfolded relatively, that is, the second main body portion 211 is unfolded in line with the first main body portion 201, the first portion 2024 can extend upward from the first fastening portion 2022, so that the second portion 2025 can be located in the gap formed by the front faces 202 of the two adjacent display units 20, and similarly, the third portion 2124 can extend downward from the second fastening portion 2122, so that the fourth portion 2125 can be located in the gap formed by the front faces 202 of the two adjacent display units 20, so that the rotation shaft 22 is located in the gap formed by the front faces 202 of the two adjacent display units 20 when the foldable display screen 2 is in the folded state.

However, the foldable display screen 2 according to the present invention can control the distance between the two display units 20 within the range of 25mm to 30mm, and in order to avoid the first portion 2024 and the fourth portion 2125 from shielding the display units 20, the distance R between the outer peripheral surface of the second portion 2025 and the axis of the first axis hole 2021 is set to be shorter than the distance R between the outer peripheral surface of the first portion 2025 and the axis of the first axis hole 2021₁15mm to 25mm, for example: 15mm, 17mm, 19mm, 21mm, 23mm, 25mm, etc., i.e., the radius of the second portion 2025 is 15mm to 25 mm. Distance R between the outer peripheral surface of the fourth portion 2125 and the axial center of the second shaft hole 2121₂15mm to 25mm, for example: 15mm, 17mm, 19mm, 21mm, 23mm, 25mm, etc., i.e., the radius of the fourth portion 2125 is 15mm to 25 mm.

As shown in fig. 6, in the present embodiment, in order to enable the foldable display screen 2 to be unfolded upward in the vertical direction z when the foldable display screen 2 is unfolded, the steel structure 4 is provided with a first guide member 43, and a second guide member extends toward the back surface 202 of the display unit 20 on the support rod 10. Specifically, the first guide member is provided with a first sliding portion 431, and the second guide member 43 is provided with a second sliding portion 101, wherein the first sliding portion 431 is slidably connected to the second sliding portion 101. More specifically, the first sliding portion 431 may be a slide rail or a slider, and the second sliding portion 101 may be a slider or a slide rail. For example, when the first sliding portion 431 is a slide rail, the second sliding portion 101 is a slider; when the first sliding portion 431 is a slider, the second sliding portion 101 is a slide rail.

Preferably, there are two second sliding portions 101, and the two second sliding portions 101 may be sliding rails disposed on both sides of the second guide member, and the first sliding portions 431 are disposed on both sides of the first guide member 43 as sliding blocks.

According to the folding and unfolding system applied to the outdoor folding LED display screen, the wind speed measurer is arranged on the folding display screen, the wind speed of the current environment of the folding display screen can be measured in real time, and a corresponding electric signal is sent to the driving mechanism, so that when the wind speed of the current environment of the folding display screen reaches or exceeds a preset wind speed value (10.8m/s), the driving mechanism can timely drive a plurality of display units of the folding display screen to be folded together, namely, when strong wind weather occurs, the folding and unfolding system can timely fold the folding display screen, the folding display screen can be effectively protected, and meanwhile, the problem of safety accidents caused by the fact that a support frame of the folding display screen collapses can be effectively solved.

Example two

Referring to fig. 13 and 14 and referring to fig. 1 to 3 again, wherein fig. 13 is a flowchart of a control method based on the automatic retraction system in the first embodiment according to the second embodiment. Since the second embodiment of the present invention provides a control method for an automatic retraction system applied to an outdoor foldable LED display screen, which is based on the control method for an automatic retraction system provided in the first embodiment of the present invention, for detailed description of the automatic retraction system, please refer to the description of the automatic retraction system in the first embodiment, and therefore, details are not repeated in this embodiment.

In this embodiment, the control method includes:

101. the controller obtains the wind speed in the current environment carrying the folding display screen and sends a wind speed signal to the driving mechanism.

The foldable display screen 2 disclosed in the embodiment of the present invention may be generally installed in an outdoor place, such as a park, a square, etc., so that, in a strong wind weather, if the foldable display screen 2 is not timely retracted, external wind acts on the foldable display screen 2 in an unfolded state, which may cause the foldable display screen 2 to be damaged, and even may cause the whole supporting device supporting the foldable display screen 2 to tip over, thereby causing a serious safety accident.

Based on this, according to the scheme, the controller is arranged on the folding display screen 2, so that a wind speed signal bearing the current environment wind speed can be obtained and sent to the driving mechanism 3, and when the current environment wind speed of the folding display screen 2 reaches or exceeds a preset wind speed value (10.8m/s), the driving mechanism 3 can timely drive the plurality of display units 20 of the folding display screen 2 to be folded together, namely, when strong wind weather occurs, the folding and unfolding system can automatically and timely fold the folding display screen 2, so that the folding display screen 2 can be effectively protected, and meanwhile, the problem of safety accidents caused by the fact that the support frame 10 of the folding display screen 2 collapses can be effectively solved.

102. The driving mechanism drives the display units of the folding display screen to be mutually folded or mutually unfolded according to the wind speed signal.

In the embodiment, when the real-time wind speed of the current environment is greater than or equal to the preset wind speed (10.8m/s), the wind speed measurer measures the real-time wind speed of the current environment to be greater than or equal to 10.8m/s or more than 10.8m/s, generates a first wind speed signal carrying the real-time wind speed greater than or equal to 10.8m/s, and sends the first wind speed signal to the controller, and then the controller sends the wind speed signal to the driving mechanism 3, so that the driving mechanism 3 drives to fold the folding display screen 2.

As can be seen from the first embodiment, the driving mechanism 3 includes the driving motor 30 and the first rope 31. The driving motor 30 is disposed on the top of the fixing frame 12, the driving motor 30 is electrically connected to the controller, a rotating shaft of the driving motor 30 is fixedly provided with a movable pulley 32, one end of the first rope 31 is wound around the movable pulley, and the other end of the first rope 31 is fixedly connected to the topmost display unit 20. Therefore, when the driving mechanism 3 drives the multiple display units 20 of the foldable display screen 2 to be folded, the driving mechanism drives the movable pulley 32 to rotate to drive the first rope 31 to loosen relative to the movable pulley 32 through the driving motor 30, that is, the other end of the first rope 31 moves downwards, the tensile force of the first rope 31 on the foldable display screen 2 is smaller than the gravity of the foldable display screen 2, and the foldable display screen 2 is folded under the gravity of the foldable display screen 2, so that the multiple display units 20 of the foldable display screen 2 are folded together.

And when the real-time wind speed of the current environment is smaller than the preset wind speed, the wind speed measurer measures the real-time wind speed of the current environment to be smaller than 10.8m/s, generates a second wind speed signal carrying the real-time wind speed to be smaller than 10.8m/s and sends the second wind speed signal to the controller, then the controller sends the wind speed signal to the driving mechanism 3, and therefore the driving mechanism 3 can unfold the folding display screen 2. Specifically, when the driving mechanism 3 drives the plurality of display units 20 of the foldable display 2 to unfold from each other, it is essential that the driving motor 30 drives the movable pulley 32 to rotate so as to drive the first rope 31 to tension with respect to the movable pulley 32, that is, the other end of the first rope 31 moves upward, and at the same time, pulls the topmost display unit 20 to move upward, so as to drive the plurality of display units 20 of the foldable display 2 to unfold from each other.

Therefore, by implementing the method, the folding display screen 2 can be used under the condition that the current wind speed is less than the preset wind speed all the time, and the purpose of protecting the folding display screen 2 can be achieved.

103. The monitoring device synchronously plays synchronous demonstration animations that a plurality of display units of the folding display screen are mutually folded or mutually unfolded.

In this embodiment, the automatic retraction system further includes a monitoring device, and the monitoring device can be used to synchronously play the synchronous demonstration animation in which the plurality of display units 20 of the foldable display screen 2 are folded or unfolded. The monitoring device can be a background server and comprises a display screen, and the display screen of the monitoring device can be used for displaying the synchronous demonstration animation.

The synchronous demonstration animation may be a real-time animation of the foldable display screen 2 during the upward movement or the downward movement of the topmost display unit 20, for example, assuming that when the foldable display screen 2 is unfolded, the height of the topmost display unit is 13m relative to the bottommost display unit, and during the process of folding the foldable display screen 2, the topmost display unit moves downward, specifically, the topmost display unit moves downward by 3m, the displacement sensor measures that the height of the topmost display unit relative to the bottommost display unit is 10m, and then sends a height signal carrying the topmost display unit moving downward by 3m to the monitoring device, so that the display screen of the monitoring device plays the animation of the foldable display screen 2 in which the topmost display unit moves downward by 3m, i.e. the monitor's display will play an animation of the folded display 2 having a height of 10m from the topmost display unit to the bottommost display unit.

The folding display screen 2 is provided with a displacement sensor. The displacement sensor is electrically connected with the monitoring device, and the displacement sensor can be used for measuring the real-time height of the display unit 20 positioned at the topmost part and sending a corresponding height signal to the monitoring device, and the monitoring device can be used for playing synchronous demonstration animations that a plurality of display units 20 of the folding display screen 2 are mutually folded or mutually unfolded according to the corresponding height signal.

In this embodiment, as shown in fig. 14, the step 103 specifically includes:

1031. the driving mechanism folds or unfolds the folding display screen according to the wind speed signal, and meanwhile, the displacement sensor measures the real-time height of the display unit located at the topmost part and sends a height signal to the monitoring device.

1032. And the monitoring device synchronously plays the synchronous demonstration animation which is in the action of folding or unfolding the display screen according to the height signal.

When the wind speed measurer measures that the wind speed of the current environment reaches 10.8m/s or more than 10.8m/s, the driving mechanism 3 drives the plurality of display units 20 of the folding display screen 2 to be folded together so as to pack the folding display screen 2, meanwhile, the displacement sensor measures the real-time height of the display unit 20 positioned at the topmost part and sends a corresponding height signal to the monitoring device, so that the monitoring device can play a synchronous demonstration animation for packing the action of the folding display screen 2 according to the corresponding height signal, thus, when the folding display screen 2 is packed, the folding display screen 2 can be monitored in real time, if the situation that the folding display screen 2 cannot be completely packed occurs in the process of packing the folding display screen 2, the situation can be found in time and maintained in time so as to ensure that the folding display screen 2 can be smoothly packed,

on the contrary, when the driving mechanism 3 drives the plurality of display units 20 of the foldable display screen 2 to unfold the foldable display screen 2, the monitoring device simultaneously plays the synchronous demonstration animation that moves with the plurality of display units 20 of the foldable display screen 2 to unfold, and the process of playing the synchronous demonstration animation synchronously is similar to the process of playing the synchronous demonstration animation when the foldable display screen 2 is folded, so the description is omitted here.

In summary, the automatic retraction system applied to the outdoor foldable LED display screen provided in the embodiments of the present invention is configured with the controller on the foldable display screen, and can acquire the wind speed signal bearing the current ambient wind speed and send the wind speed signal to the driving mechanism, so that when the current ambient wind speed of the foldable display screen reaches or exceeds the preset wind speed value (10.8m/s), the driving mechanism can timely drive the plurality of display units of the foldable display screen to be folded together, that is, when the wind speed reaches or exceeds the preset wind speed value (10.8m/s), the retraction system of the present invention can timely retract the foldable display screen, thereby effectively protecting the foldable display screen, and simultaneously, effectively solving the problem of safety accidents caused by the support frame of the foldable display screen collapsing.

In addition, according to the control method of the automatic folding and unfolding system applied to the outdoor folding LED display screen, the monitoring device is used for synchronously playing the synchronous demonstration animation with the folding action or the unfolding action of the folding display screen in the process of folding or unfolding the folding display screen, the folding and unfolding process of the folding display screen can be monitored in real time, the real-time performance of monitoring is improved, and therefore the folding display screen can be smoothly folded or unfolded.

The automatic folding and unfolding system applied to the outdoor folding LED display screen and the control method thereof disclosed by the embodiment of the invention are described in detail, a specific embodiment is applied in the system to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the principle and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. The utility model provides an automatic receive and release system for outdoor folding LED display screen which characterized in that includes:

the controller is electrically connected with the driving mechanism and used for acquiring a wind speed signal bearing the current ambient wind speed and sending the wind speed signal to the driving mechanism, and the driving mechanism is used for driving the display units of the folding display screen to be mutually folded or mutually unfolded according to the wind speed signal; and

2. The automatic retraction system according to claim 1, wherein an air speed measurer is disposed on the foldable display screen and electrically connected to the controller, and is configured to measure a current ambient air speed and send the air speed signal carrying the current ambient air speed to the controller.

3. The automatic retraction system according to claim 1, wherein a displacement sensor is further disposed on the foldable display screen, the displacement sensor is electrically connected to the monitoring device, the displacement sensor is used for measuring a real-time height of the display unit located at the topmost portion and sending a corresponding height signal to the monitoring device, and the monitoring device is used for playing a synchronous demonstration animation in which a plurality of display units of the foldable display screen are mutually folded or mutually unfolded according to the corresponding height signal.

4. The automatic retraction system according to any one of claims 1 to 3, wherein the driving mechanism includes a driving motor and a first rope, the driving motor is disposed on the top of the fixed frame and electrically connected to the controller, a rotating shaft of the driving motor is fixedly provided with a movable pulley, one end of the first rope is wound around the movable pulley, and the other end of the first rope is fixedly connected to the topmost display unit;

5. The automatic retraction system according to claim 4, wherein the number of the driving motors is two, the number of the first ropes is two corresponding to the two driving motors, the two driving motors are arranged at a middle position of the top of the fixed frame side by side at intervals, and the other ends of the two first ropes are fixed on the topmost display unit at intervals.

6. The automatic retraction system according to claim 5, wherein the fixing frame is a long strip truss, the length direction of the fixing frame is perpendicular to the horizontal direction of the support rod, the fixing frame comprises a front surface and a bottom surface perpendicular to the front surface, and the front surface is in the same direction as the display surface of each display unit;

7. The automatic retraction system according to claim 6, wherein the width direction of the fixed frame is a vertical direction and a horizontal direction, each of the first fixed pulley sets comprises at least two fixed pulleys, the two fixed pulleys are fixedly arranged on the bottom surface of the fixed frame at intervals in the width direction of the fixed frame, and the two fixed pulleys are a first fixed pulley and a second fixed pulley respectively;

8. A control method of an automatic folding and unfolding system applied to an outdoor folding LED display screen is characterized in that the automatic folding and unfolding system comprises a supporting device, a folding display screen, a driving mechanism, a controller and a monitoring device, the supporting device comprises a supporting rod, a bearing frame and a fixing frame, the supporting rod is vertically arranged, the bearing frame is arranged on the supporting rod, the bearing frame is vertically arranged with the supporting rod, the fixing frame is vertically arranged on the supporting rod and is positioned above the bearing frame and is arranged at intervals with the bearing frame, the folding display screen is arranged between the bearing frame and the fixing frame, the folding display screen comprises a plurality of display units which are relatively arranged up and down, two adjacent display units are hinged with each other, the display unit positioned at the bottommost part is connected with the bearing frame, the driving mechanism is fixedly arranged on the fixing frame and is connected with the display unit positioned at the topmost part, the controller is electrically connected with the driving mechanism, and the control method comprises the following steps:

9. The control method according to claim 8, wherein a displacement sensor is arranged on the foldable display screen and is electrically connected with the monitoring device;

10. The control method according to claim 8 or 9, wherein the synchronous demonstration animation is a real-time animation of folding a display screen during upward movement or downward movement of the display unit located at the topmost part, and the type of the synchronous demonstration animation includes at least two-dimensional, three-dimensional, panoramic or VR.

11. The control method according to claim 8 or 9, wherein the driving mechanism includes a driving motor and a first rope, the driving motor is disposed on the top of the fixing frame and electrically connected to the controller, a rotating shaft of the driving motor is fixedly provided with a movable pulley, one end of the first rope is wound around the movable pulley, and the other end of the first rope is fixedly connected to the topmost display unit;