LED display anti-collision device

Abstract

The present invention provides an anti-collision device for an LED display screen, comprising a box body, a telescopic rotating mechanism, an anti-collision sheet and a display module; a mounting hole and a receiving groove for receiving the anti-collision sheet are provided on the peripheral side of the box body; the telescopic rotating mechanism is embedded in the mounting hole and movably connected to the box body; the anti-collision sheet is fixedly connected to the telescopic rotating mechanism; when the telescopic rotating mechanism is not subjected to external force, the telescopic rotating mechanism automatically causes the anti-collision sheet to block the peripheral side of the display module outside the receiving groove; when the telescopic rotating mechanism is subjected to external force, the telescopic rotating mechanism can automatically drive the anti-collision sheet outside the receiving groove to retract and rotate so as to be embedded in the receiving groove. The anti-collision device for an LED display screen provided by the present invention automatically drives the anti-collision sheet to block the display module through the telescopic rotating mechanism to protect the display module; when subjected to external force, the telescopic rotating mechanism can automatically drive the anti-collision sheet to retract and rotate so as to embed the display module in the receiving groove. The whole process does not require manual operation by the user, which is convenient for the user to use.

Description

Technical Field

[0001] The invention belongs to the technical field of display screen protection equipment, and more specifically, relates to an LED display screen anti-collision device. Background Art

[0002] LED display is a flat-panel display used to display information such as text, images, videos and video signals. Because LED display can be extended arbitrarily, seamlessly spliced, has a long operating time, can use interactive technology, and has good display effects, it is widely used in airports, shopping malls, hotels, high-speed railways, subways, cinemas, exhibitions, office buildings and other places.

[0003] The LED display screen includes a box body and a display module installed on the box body. The display module includes a PCB board and lamp beads arranged on the PCB board. During the transportation of the LED display screen, it is very easy to cause collisions, which may cause the PCB board to deform and be damaged, or cause the lamp beads on the PCB board to be knocked off.

[0004] In the prior art, before transporting the LED display screen, the transport personnel will manually set the corner protectors on the edge of the display module; when splicing the LED display screen, the operator will manually remove the corner protectors from the edge of the display module to prevent the corner protectors from affecting the assembly of the LED display screen. Therefore, the existing display module protection device is very inconvenient to use. Summary of the invention

[0005] The purpose of the present invention is to provide an LED display screen anti-collision device to solve the technical problem that the display module protection device existing in the prior art is inconvenient to use.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an LED display screen anti-collision device, comprising a box, a telescopic rotation mechanism, an anti-collision sheet and a display module installed on the box;

[0007] The peripheral side of the box body is provided with a mounting hole and a receiving groove for receiving the anti-collision sheet;

[0008] The telescopic rotating mechanism is embedded in the mounting hole and movably connected to the box body;

[0009] The anti-collision sheet is fixedly connected to the telescopic rotating mechanism;

[0010] When the telescopic rotating mechanism is not subjected to an external force along its telescopic direction, the telescopic rotating mechanism automatically causes the anti-collision sheet to shield the peripheral side of the display module outside the receiving groove;

[0011] When the telescopic rotating mechanism is subjected to an external force in a direction in which the mechanism retracts into the box body, the telescopic rotating mechanism can automatically drive the anti-collision sheet outside the receiving groove to retract and rotate so as to be embedded in the receiving groove.

[0012] Furthermore, the telescopic rotation mechanism includes an elastic mechanism embedded in the mounting hole, and the anti-collision sheet is fixed on the elastic mechanism;

[0013] The elastic mechanism can drive the anti-collision sheet to extend out of or retract into the receiving groove.

[0014] Further, the elastic mechanism comprises a guide shaft slidably arranged in the mounting hole and a first elastic member embedded in the mounting hole, and the anti-collision sheet is fixedly connected to the guide shaft;

[0015] Two ends of the first elastic member are respectively in contact with the guide shaft and a hole wall of the mounting hole.

[0016] Furthermore, the guide shaft is a shaft sleeve; the telescopic rotation mechanism further comprises a positioning shaft, the positioning shaft is embedded in the shaft sleeve and is non-rotatably connected to the hole wall of the mounting hole;

[0017] The outer side of the positioning shaft or the inner side of the sleeve is provided with a spirally ascending sliding groove with closed ends, and the inner side of the sleeve or the outer side of the positioning shaft is provided with a sliding block accordingly;

[0018] The sliding block is slidably disposed in the sliding groove, and the first elastic component can drive the shaft sleeve to move relative to the positioning shaft.

[0019] Furthermore, it also includes a limiter installed on the box body;

[0020] A limiting groove is provided on the side surface of the positioning shaft, and the limiting member extends into the limiting groove.

[0021] Furthermore, the telescopic rotating mechanism is provided in plurality and is distributed on two opposite sides of the box body;

[0022] The end of the positioning shaft of the telescopic rotating mechanism located on one side of the box body that is exposed from the anti-collision plate has a convex portion, and the end of the positioning shaft of the telescopic rotating mechanism located on the other side of the box body that is exposed from the anti-collision plate has a positioning hole;

[0023] When adjacent boxes are spliced, the protrusion of the positioning shaft on one box extends into the positioning hole of the positioning shaft on the other box.

[0024] Furthermore, it also includes a second elastic member disposed in the mounting hole, and the limiting groove extends along the axial direction of the positioning shaft;

[0025] Two ends of the second elastic member are respectively in contact with the positioning shaft and a hole wall of the mounting hole.

[0026] Furthermore, a guide hole is provided on the positioning shaft, and one end of the second elastic member is arranged in the guide hole.

[0027] Further, the positioning shaft has a first large diameter section and a first small diameter section;

[0028] The sleeve abuts against an end wall of the first large-diameter section close to the first small-diameter section.

[0029] Further, the sleeve has a second large diameter section and a second small diameter section;

[0030] The outer diameter of the second small diameter section is the same as the outer diameter of the first large diameter section;

[0031] The first elastic member is sleeved on the second small diameter section;

[0032] The anti-collision sheet is fixedly arranged on the end surface of the second large-diameter section away from the second small-diameter section.

[0033] The beneficial effects of the LED display screen anti-collision device provided by the present invention are as follows: compared with the prior art, a mounting hole is provided on the box body of the LED display screen anti-collision device of the present invention, and the telescopic rotating mechanism is embedded in the mounting hole, which can make its structure more compact; the accommodating groove and the mounting hole are both arranged on the peripheral side of the box body, which shortens the response time of the anti-collision plate and simplifies the structure of the telescopic rotating mechanism; the telescopic rotating mechanism is movably connected to the box body, which avoids the telescopic rotating mechanism from being separated from the box body, thereby avoiding inconvenience for protecting the display module; the anti-collision plate is fixedly connected to the telescopic rotating mechanism, so that the movement state of the anti-collision plate is synchronized with the telescopic rotating mechanism, thereby facilitating the anti-collision plate to protect the display module through the telescopic rotating mechanism; when the telescopic rotating mechanism is not affected by the telescopic rotating mechanism along its telescopic direction, the anti-collision plate can be driven to protect the display module; When there is an external force, the telescopic rotating mechanism can automatically drive the anti-collision sheet to block the surrounding side of the display module outside the receiving groove, thereby protecting the display module and avoiding damage to the display module; when assembling the boxes of two LED display screens, the boxes close to each other will give the telescopic rotating mechanism an external force in the direction of its retracting into the box body, so as to squeeze the telescopic rotating mechanism toward the direction of the installation hole, and automatically drive the anti-collision sheet to rotate through the telescopic rotating mechanism until the anti-collision sheet is retracted into the receiving groove, thereby avoiding the anti-collision sheet from interfering with the assembly of the LED display screen and reducing the assembly gap between two adjacent LED display screens; when not assembled, the anti-collision sheet blocks the surrounding side of the display module, and when assembled, the anti-collision sheet is retracted into the receiving groove. The whole process does not require manual operation by the user, which is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 A schematic diagram of the structure of the LED display screen anti-collision device provided by the embodiment of the present invention Figure 1 ;

[0036] Figure 2 A schematic diagram of the structure of the LED display screen anti-collision device provided by the embodiment of the present invention Figure 2 ;

[0037] Figure 3 for Figure 2 Middle AA section view;

[0038] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0039] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0040] Figure 6 for Figure 4 Exploded view of the middle part of the structure;

[0041] Figure 7 for Figure 1 Schematic diagram of the splicing of the anti-collision devices of two adjacent LED display screens Figure 1 ;

[0042] Figure 8 for Figure 7 The enlarged view of point D in the middle;

[0043] Fig. 9 for Figure 8 Schematic diagram of the splicing of the anti-collision devices of two adjacent LED display screens Figure 2 ;

[0044] Fig.10 for Figure 8 Schematic diagram of the splicing of the anti-collision devices of two adjacent LED display screens Figure 3 ;

[0045] Fig.11 for Figure 8 Schematic diagram of the splicing of the anti-collision devices of two adjacent LED display screens Figure 4 .

[0046] Among them, the reference numerals in the figure are:

[0047] 1. Box body; 11. Accommodating groove; 12. Mounting hole; 2. Display module; 3. Telescopic rotating mechanism; 31. Elastic mechanism; 311. Bushing; 3111. Second large diameter section; 3112. Second small diameter section; 3113. Slide groove; 312. First elastic member; 32. Positioning shaft; 321. First large diameter section; 3211. Guide hole; 3212. Limiting groove; 322. First small diameter section; 3221. Sliding block; 3222. Positioning hole; 4. Anti-collision sheet; 5. Second elastic member; 6. Limiting piece. DETAILED DESCRIPTION

[0048] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0050] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] See also Figures 1 to 4 The LED display screen anti-collision device provided by the present invention is now described. The LED display screen anti-collision device comprises a box body 1, a telescopic rotating mechanism 3, an anti-collision sheet 4 and a display module 2 installed on the box body 1;

[0053] The peripheral side of the box body 1 is provided with a mounting hole 12 and a receiving groove 11 for receiving the anti-collision sheet 4;

[0054] The telescopic rotating mechanism 3 is embedded in the mounting hole 12 and movably connected to the box body 1;

[0055] The anti-collision sheet 4 is fixedly connected to the telescopic rotating mechanism 3;

[0056] When the telescopic rotating mechanism 3 is not subjected to external force along its telescopic direction, the telescopic rotating mechanism 3 automatically makes the anti-collision sheet 4 shield the peripheral side of the display module 2 outside the receiving groove 11;

[0057] When the telescopic rotating mechanism 3 is subjected to an external force in the direction in which it retracts into the box body 1 , the telescopic rotating mechanism 3 can automatically drive the anti-collision sheet 4 located outside the receiving groove 11 to retract and rotate so as to be embedded in the receiving groove 11 .

[0058] When the two boxes 1 are spliced, the telescopic rotating mechanism 3 is subjected to an external force in the direction in which the box 1 is retracted, and the telescopic rotating mechanism 3 automatically drives the anti-collision plate 4 located outside the accommodating groove 11 to retract and rotate so as to be embedded in the accommodating groove 11; when the two spliced ​​boxes 1 are disassembled, the telescopic rotating mechanism 3 is not subjected to an external force in the direction in which the box 1 is retracted, and the telescopic rotating mechanism 3 automatically drives the anti-collision plate 4 located in the accommodating groove 11 to extend and rotate so as to shield the surrounding side of the display module 2 outside the accommodating groove 11.

[0059] Compared with the prior art, the LED display screen anti-collision device provided by the present invention has a mounting hole 12 on the box body 1, and the telescopic rotating mechanism 3 is embedded in the mounting hole 12, which can make its structure more compact; the accommodating groove 11 and the mounting hole 12 are both arranged on the peripheral side of the box body 1, which shortens the response time of the anti-collision plate 4 and simplifies the structure of the telescopic rotating mechanism 3; the telescopic rotating mechanism 3 is movably connected to the box body 1, avoiding the telescopic rotating mechanism 3 from being separated from the box body 1, thereby avoiding inconvenience for protecting the display module 2; the anti-collision plate 4 is fixedly connected to the telescopic rotating mechanism 3, so that the movement state of the anti-collision plate 4 is synchronized with the telescopic rotating mechanism 3, thereby facilitating the anti-collision plate 4 to protect the display module 2 through the telescopic rotating mechanism 3; when the telescopic rotating mechanism 3 is not subjected to external force along its telescopic direction, the telescopic rotating mechanism 3 can automatically drive the anti-collision sheet 4 to block the surrounding side of the display module 2 outside the receiving groove 11, so as to protect the display module 2 and prevent the display module 2 from being damaged; when assembling the boxes 1 of two LED display screens, the boxes 1 approaching each other will give the telescopic rotating mechanism 3 an external force in the direction of its retraction into the box 1, so as to squeeze the telescopic rotating mechanism 3 toward the direction of the mounting hole 12, and automatically drive the anti-collision sheet 4 to rotate through the telescopic rotating mechanism 3 until the anti-collision sheet 4 is retracted into the receiving groove 11, so as to prevent the anti-collision sheet 4 from interfering with the assembly of the LED display screen and reduce the assembly gap between the two adjacent LED display screens; when not assembled, the anti-collision sheet 4 blocks the surrounding side of the display module 2, and when assembled, the anti-collision sheet 4 is retracted into the receiving groove 11. The whole process does not require manual operation by the user, which is simple and convenient.

[0060] Specifically, the shape of the anti-collision sheet 4 is designed according to actual needs.

[0061] For further information, see Figure 4 As a specific embodiment of the LED display screen anti-collision device provided by the present invention, the telescopic rotation mechanism 3 includes an elastic mechanism 31 embedded in the mounting hole 12, and the anti-collision sheet 4 is fixed on the elastic mechanism 31;

[0062] The elastic mechanism 31 can drive the anti-collision plate 4 to extend or retract into the receiving groove 11. Compared with the automatic control method of motor, cylinder, etc. to drive the anti-collision plate 4 to move, the elastic mechanism 31 drives the anti-collision plate 4 to extend or retract into the receiving groove 11 through the mechanical movement of the elastic mechanism 31, which has the characteristics of low cost and simple structure.

[0063] For further information, see Figure 4 and Figure 6 As a specific embodiment of the LED display anti-collision device provided by the present invention, the elastic mechanism 31 includes a guide shaft slidably arranged in the mounting hole 12 and a first elastic member 312 embedded in the mounting hole 12, and the anti-collision sheet 4 is fixedly connected to the guide shaft so that the movement state of the anti-collision sheet 4 is the same as that of the guide shaft, and is slidably arranged in the mounting hole 12 through the guide shaft, so that the hole wall of the mounting hole 12 guides the movement of the guide shaft, thereby ensuring that the anti-collision sheet 4 can smoothly extend or retract into the receiving groove 11, avoiding the anti-collision sheet 4 from tilting during the movement and failing to protect the display module 2 well, or avoiding the anti-collision sheet 4 from failing to be embedded in the receiving groove 11;

[0064] The two ends of the first elastic member 312 are respectively in contact with the guide shaft and the hole wall of the mounting hole 12, so that the elasticity of the first elastic member 312 is utilized to drive the guide shaft to slide, thereby simplifying the structure.

[0065] For further information, see Figure 4 and Figure 6 As a specific embodiment of the LED display anti-collision device provided by the present invention, the guide shaft is a shaft sleeve 311; the telescopic rotation mechanism 3 also includes a positioning shaft 32, the positioning shaft 32 is embedded in the shaft sleeve 311, and is non-rotatably connected to the hole wall of the mounting hole 12 to ensure that the positioning shaft 32 is always located in the mounting hole 12, and the positioning shaft 32 is prevented from being separated from the mounting hole 12;

[0066] The outer side of the positioning shaft or the inner side of the sleeve 311 is provided with a spirally ascending sliding groove 3113 with closed ends, and the inner side of the sleeve or the outer side of the positioning shaft 32 is correspondingly provided with a sliding block 3221;

[0067] The slider 3221 is slidably arranged in the slide groove 3113, and the first elastic member 312 can drive the sleeve 311 to move relative to the positioning shaft 32, so that the slider 3221 slides in the slide groove 3113, and when the positioning shaft 32 does not rotate and the slide groove 3113 spirally rises, the sleeve 311 rotates relative to the positioning shaft 32, thereby driving the anti-collision plate 4 to rotate through the sleeve 311; the two ends of the slide groove 3113 are closed, which can ensure that the sleeve 311 will not separate from the positioning shaft 32.

[0068] For further information, see Figures 4 to 6 As a specific embodiment of the LED display anti-collision device provided by the present invention, it also includes a limit member 6 installed on the box body 1; a limit groove 3212 is provided on the side of the positioning shaft 32, and the limit member 6 extends into the limit groove 3212, so that the positioning shaft 32 is limited in the installation hole 12 by the limit member 6, and the rotation of the positioning shaft 32 is restricted.

[0069] Specifically, the limiting member 6 is a machine screw.

[0070] For further information, see Figure 4 , Figure 5 and Figures 7 to 11 As a specific embodiment of the LED display screen anti-collision device provided by the present invention, the telescopic rotation mechanism 3 is provided in multiple numbers and distributed on opposite sides of the box body 1 so as to protect different parts of the display module 2;

[0071] The end of the positioning shaft 32 of the telescopic rotating mechanism 3 located on one side of the box body 1 that is exposed to the anti-collision plate 4 has a convex portion, and the end of the positioning shaft 32 of the telescopic rotating mechanism 3 located on the other side of the box body 1 that is exposed to the anti-collision plate 4 has a positioning hole 3222;

[0072] When adjacent box bodies 1 are spliced, the convex portion of the positioning shaft 32 on one box body 1 extends into the positioning hole 3222 of the positioning shaft 32 on the other box body 1, so as to quickly align the two box bodies 1 to be spliced, thereby improving the splicing efficiency of the adjacent box bodies 1; when positioning the two box bodies 1 to be spliced, the positioning shaft 32 on one box body 1 can first abut against the hole wall of the positioning hole 3222 on the positioning shaft 32 on the other box body 1, so the positioning shaft 32 will be subjected to an external force along the direction in which it retracts into the box body 1, thereby driving the anti-collision plate 4 to retract and rotate to be embedded in the accommodating groove 11, thereby avoiding affecting the splicing of the two box bodies 1.

[0073] For further information, see Figures 3 to 5, as a specific embodiment of the LED display anti-collision device provided by the present invention, it also includes a second elastic member 5 arranged in the mounting hole 12, and the limiting groove 3212 extends along the axial direction of the positioning shaft 32, so that the limiting member 6 can slide in the limiting groove 3212, so that the positioning shaft 32 can move in the mounting hole 12 along the axial direction of the positioning shaft 32;

[0074] The two ends of the second elastic member 5 are respectively in contact with the positioning shaft 32 and the hole wall of the mounting hole 12, so that the second elastic member 5 can directly drive the positioning shaft 32 to slide along the axial direction of the positioning shaft 32 in the mounting hole 12, thereby providing a movable margin for the telescopic rotating mechanism 3 to position the adjacent box bodies 1, facilitating the positioning and splicing of the two box bodies 1, and avoiding the positioning shaft 32 being too long, which would cause the gap between the two assembled box bodies 1 to be too large.

[0075] Specifically, the first elastic member 312 and the second elastic member 5 are both springs.

[0076] For further information, see Figure 4 and Figure 5 As a specific embodiment of the LED display anti-collision device provided by the present invention, a guide hole 3211 is provided on the positioning shaft 32, and one end of the second elastic member 5 is arranged in the guide hole 3211, so as to limit the second elastic member 5 by the hole wall of the guide hole 3211 to guide the movement of the second elastic member 5, thereby preventing the second elastic member 5 from being skewed and affecting the telescopic movement of the positioning shaft 32 in the mounting hole 12.

[0077] For further information, see Figures 4 to 6 As a specific implementation of the LED display screen anti-collision device provided by the present invention, the positioning shaft 32 has a first large diameter section 321 and a first small diameter section 322;

[0078] The sleeve 311 abuts against the end wall of the first large diameter section 321 close to the first small diameter section 322, so as to drive the positioning shaft 32 to extend along the mounting hole 12 through the second elastic member 5, so that the end wall of the first large diameter section 321 close to the first small diameter section 322 drives the sleeve 311 to move in the direction of extending out of the mounting hole 12, and at the same time, the first elastic member 312 also drives the sleeve 311 to move in the direction of extending out of the mounting hole 12, thereby providing a greater force for the anti-collision plate 4 to extend out of the accommodating groove 11.

[0079] Specifically, the guide hole 3211 is provided on the first large diameter section 321 .

[0080] Specifically, the limiting groove 3212 is provided in the first large diameter section 321 .

[0081] For further information, see Figures 4 to 6As a specific embodiment of the LED display screen anti-collision device provided by the present invention, the shaft sleeve 311 has a second large diameter section 3111 and a second small diameter section 3112;

[0082] The outer diameter of the second small diameter section 3112 is the same as the outer diameter of the first large diameter section 321, so as to open the mounting hole 12 and avoid the outer diameter of the second small diameter section 3112 being too large to increase the processing cost of the mounting hole 12;

[0083] The first elastic member 312 is sleeved on the second small diameter section 3112 so that the first elastic member 312 abuts against the end wall of the second large diameter section 3111 close to the second small diameter section 3112, thereby improving the stability of the first elastic member 312 and preventing the outer diameter of the second small diameter section 3112 from being too small, thereby increasing the distance between the first elastic member 312 and the second small diameter section 3112.

[0084] The anti-collision sheet 4 is fixedly mounted on the end surface of the second large diameter section 3111 away from the second small diameter section 3112 to increase the contact area between the anti-collision sheet 4 and the shaft sleeve 311 , thereby facilitating fixing the anti-collision sheet 4 on the shaft sleeve 311 .

[0085] Specifically, the anti-collision plate 4 is fixed to the end surface of the second large-diameter section 3111 by screws.

[0086] Specifically, the sliding groove 3113 is disposed at the second large-diameter section 3111 , and the sliding block 3221 is disposed at the first small-diameter section 322 .

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An LED display screen anti-collision device, comprising a box and a display module mounted on the box, characterized in that: It also includes a telescopic rotating mechanism and an anti-collision sheet; The peripheral side of the box body is provided with a mounting hole and a receiving groove for receiving the anti-collision sheet; The telescopic rotating mechanism is embedded in the mounting hole and movably connected to the box body; The anti-collision sheet is fixedly connected to the telescopic rotating mechanism; When the telescopic rotating mechanism is not subjected to an external force along its telescopic direction, the telescopic rotating mechanism automatically causes the anti-collision sheet to shield the peripheral side of the display module outside the receiving groove; When the telescopic rotating mechanism is subjected to an external force in the direction in which it retracts into the box body, the telescopic rotating mechanism can automatically drive the anti-collision sheet located outside the receiving groove to retract and rotate so as to be embedded in the receiving groove; The telescopic rotating mechanism comprises an elastic mechanism embedded in the mounting hole, and the anti-collision sheet is fixed on the elastic mechanism; The elastic mechanism can drive the anti-collision sheet to extend out of or retract into the receiving groove; The elastic mechanism comprises a guide shaft slidably arranged in the mounting hole and a first elastic member embedded in the mounting hole, and the anti-collision sheet is fixedly connected to the guide shaft; Two ends of the first elastic member are respectively in contact with the guide shaft and the hole wall of the mounting hole; The guide shaft is a shaft sleeve; the telescopic rotation mechanism also includes a positioning shaft, the positioning shaft is embedded in the shaft sleeve and is non-rotatably connected to the hole wall of the mounting hole; The outer side of the positioning shaft or the inner side of the sleeve is provided with a spirally ascending sliding groove with both ends closed, and the inner side of the sleeve or the outer side of the positioning shaft is provided with a sliding block accordingly; The sliding block is slidably disposed in the sliding groove, and the first elastic component can drive the shaft sleeve to move relative to the positioning shaft; It also includes a limiting member installed on the box body; A limiting groove is provided on the side of the positioning shaft, and the limiting member extends into the limiting groove; The telescopic rotating mechanism is provided in a plurality and is distributed on two opposite sides of the box body; The end of the positioning shaft of the telescopic rotating mechanism located on one side of the box body that is exposed from the anti-collision plate has a convex portion, and the end of the positioning shaft of the telescopic rotating mechanism located on the other side of the box body that is exposed from the anti-collision plate has a positioning hole; When adjacent boxes are spliced, the protrusion of the positioning shaft on one box extends into the positioning hole of the positioning shaft on another box; It also includes a second elastic member disposed in the mounting hole, and the limiting groove extends along the axial direction of the positioning shaft; Two ends of the second elastic member are respectively in contact with the positioning shaft and the hole wall of the mounting hole; The positioning shaft is provided with a guide hole, and one end of the second elastic member is arranged in the guide hole; The positioning shaft has a first large diameter section and a first small diameter section; The sleeve abuts against an end wall of the first large-diameter section close to the first small-diameter section.

2. The LED display screen anti-collision device according to claim 1, characterized in that: The sleeve has a second large diameter section and a second small diameter section; The outer diameter of the second small diameter section is the same as the outer diameter of the first large diameter section; The first elastic member is sleeved on the second small diameter section; The anti-collision sheet is fixedly arranged on the end surface of the second large-diameter section away from the second small-diameter section.

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