Anti-collision LED display screen

Abstract

The utility model provides an anti-collision LED display screen which comprises a display device, a fixing device is arranged behind the display device, and a rotating device is arranged in the middle of the fixing device. The fixing device comprises a fixing box, two guide rails are symmetrically arranged in the fixing box, racks are slidably arranged on the guide rails, second springs are fixedly arranged on the outer sides of the racks, and clamping arms are fixedly arranged behind the racks; the rotating device comprises a rotating shaft, a reel is arranged at the front end of the rotating shaft, and a pull wire is arranged on the reel; according to the anti-collision LED display screen, through the design that the ratchet wheel and the pawl are arranged on the rotating shaft, the clamping arms can be driven to automatically lock the position of the device by pulling the pull wire, rapid installation is facilitated, the installation difficulty is reduced, and the anti-collision LED display screen is convenient to use in occasions such as field camping; and overall resetting can be conveniently driven through elastic force, and the operation convenience is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display screen design, in particular to an impact-resistant LED display screen. Background Art

[0002] LED display is an electronic display that uses LED (Light Emitting Diode) as a display element. It has high brightness, contrast and color vividness, and can be viewed at a wide viewing angle. LED displays are widely used in indoor and outdoor billboards, stage backgrounds, stadiums, traffic lights, information display boards, etc. LED displays have attracted widespread attention and adoption due to their low power consumption, long life and reliability. In actual use, LED displays are usually composed of many small LED modules, which are composed of single LEDs. These modules are arranged in a matrix and controlled by an electronic control system to achieve the display of images and videos. Depending on the requirements of the application scenario, LED displays can adopt different pixel pitches and resolutions.

[0003] Existing LED display screens need to be fixed with bolts and other parts during installation. They cannot be quickly fixed in outdoor environments where quick installation and disassembly are required. The installation is difficult and inconvenient. Utility Model Content

[0004] The utility model aims to provide an impact-resistant LED display screen, which can be quickly installed on a plate-shaped object, has low installation difficulty, is convenient for use in outdoor camping and other occasions, and has strong convenience in operation.

[0005] The embodiment of the utility model is achieved as follows:

[0006] An embodiment of the utility model provides an impact-resistant LED display screen, comprising a display device, a fixing device is arranged at the rear of the display device, and a rotating device is arranged in the middle of the fixing device; the fixing device comprises a fixing box, two guide rails are symmetrically arranged inside the fixing box, a rack is slidably arranged on the guide rail, a second spring is fixedly arranged on the outer side of the rack, and a clamping arm is fixedly arranged at the rear of the rack; the rotating device comprises a rotating shaft, a winding wheel is arranged at the front end of the rotating shaft, a traction line is arranged on the winding wheel, a gear is arranged in the middle of the rotating shaft, a ratchet is arranged at the rear end of the rotating shaft, a pawl is arranged on the top of the ratchet, and a third spring is fixedly arranged on one side of the pawl.

[0007] Optionally, the display device includes a support frame, a display is installed inside the support frame, a first spring is fixedly arranged at the bottom of the display, and a damping rod is arranged in the middle of the first spring.

[0008] Optionally, the guide rail has a T-shaped cross section.

[0009] Optionally, the second spring is bolted to the fixing box, and the clamp arm is L-shaped.

[0010] Optionally, the winding wheel, the gear and the ratchet are respectively connected to the rotating shaft with a flat key.

[0011] Optionally, the third spring is connected to the fixed box bolt, and the rotating shaft is connected to the fixed box bearing.

[0012] The beneficial effects of the embodiments of the utility model include: the embodiments of the utility model provide an impact-resistant LED display screen, which pulls the traction line to drive the winding wheel to rotate clockwise, and the winding wheel drives the gear to rotate through the rotating shaft. The gear simultaneously engages with two racks, so that it drives the clamping arms to slide inward along the guide rail, so that the two clamping arms clamp the plate-like object in the area to be fixed, and completes the rapid installation of the display screen. When the rotating shaft rotates, it simultaneously drives the ratchet to rotate clockwise, and when the ratchet rotates, it moves the pawl. The pawl is always tightly attached to the ratchet wheel under the elastic force of the third spring. When the clamping arm clamps the plate-like object, the pawl blocks the ratchet wheel from reversing, so that the rotating shaft and the gear cannot retreat, and the rack position can be locked. By arranging a ratchet and a pawl on the rotating shaft, the traction line can be pulled to drive the clamp arm to automatically lock the device position, which is convenient for quick installation and reduces the difficulty of installation. It is convenient for use in occasions such as outdoor camping. When the device needs to be disassembled, press down on the top of the pawl, and then move the pawl to the right to disengage it from the ratchet and release the rotating shaft lock. At this time, the compressed second spring drives the two racks to reset through elastic force, the gear and the winding wheel reverse, the traction line is rewound onto the winding wheel, the clamp arm synchronously resets the contact device and is fixed, and the design of arranging a second spring on the outside of the rack makes it easy to drive the overall reset through elastic force, thereby further improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the overall structure of an impact-resistant LED display screen of the utility model;

[0015] Figure 2 It is a partial cross-sectional view of a display device of an impact-resistant LED display screen of the utility model;

[0016] Figure 3 It is a partial cross-sectional view of a fixing device of an impact-resistant LED display screen of the utility model;

[0017] Figure 4 This is a schematic structural diagram of a rotating device for an impact-resistant LED display screen according to the utility model;

[0018] Figure 5 The utility model is a schematic diagram of the working principle of a fixing device and a rotating device of an impact-resistant LED display screen.

[0019] Icons: 1. Display device; 101. Support frame; 102. Display; 103. First spring; 104. Damping rod; 2. Fixing device; 201. Fixing box; 202. Rack; 203. Second spring; 204. Guide rail; 205. Clamp arm; 3. Rotating device; 301. Rotating shaft; 302. Winding wheel; 303. Gear; 304. Ratchet; 305. Pawl; 306. Third spring; 307. Traction line. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0022] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-5 As shown, an embodiment of the utility model provides an impact-resistant LED display screen, including a display device 1, a fixing device 2 is arranged behind the display device 1, and a rotating device 3 is arranged in the middle of the fixing device 2.

[0025] like Figure 2 As shown, the display device 1 includes a support frame 101 , a display 102 is installed inside the support frame 101 , a first spring 103 is fixedly arranged at the bottom of the display 102 , and a damping rod 104 is arranged in the middle of the first spring 103 .

[0026] In this embodiment, when in use, the support frame 101 wraps around the outside of the display 102. When impacted, the damping rod 104 absorbs the vibration to prevent the display 102 from being damaged. The first spring 103 drives the damping rod 104 to reset through elastic force to keep the display 102 at a normal height.

[0027] like Figure 3 As shown, the fixing device 2 includes a fixing box 201, two guide rails 204 are symmetrically arranged inside the fixing box 201, a rack 202 is slidably arranged on the guide rail 204, a second spring 203 is fixedly arranged on the outer side of the rack 202, a clamping arm 205 is fixedly arranged behind the rack 202, the cross-section of the guide rail 204 is T-shaped, the second spring 203 is bolted to the fixing box 201, and the clamping arm 205 is L-shaped.

[0028] In this embodiment, the gear 303 engages with the two racks 202 at the same time, so that it drives the clamping arm 205 to slide inward along the guide rail 204, so that the two clamping arms 205 clamp the plate-like object in the area to be fixed, thereby completing the rapid installation of the display screen. The compressed second spring 203 drives the two racks 202 to reset through elastic force, the gear 303 and the winding wheel 302 are reversed, and the traction line 307 is rewound onto the winding wheel 302, and the clamping arm 205 is synchronously reset and fixed with the contact device. By arranging the second spring 203 on the outside of the rack 202, it is convenient to drive the overall reset through elastic force, thereby further improving the convenience of operation.

[0029] like Figure 4As shown, the rotating device 3 includes a rotating shaft 301, a winding wheel 302 is arranged at the front end of the rotating shaft 301, a traction line 307 is arranged on the winding wheel 302, a gear 303 is arranged in the middle of the rotating shaft 301, a ratchet 304 is arranged at the rear end of the rotating shaft 301, a pawl 305 is arranged on the top of the ratchet 304, and a third spring 306 is fixedly arranged on one side of the pawl 305. The winding wheel 302, the gear 303 and the ratchet 304 are respectively connected to the rotating shaft 301 with a flat key, the third spring 306 is bolted to the fixed box 201, and the rotating shaft 301 is connected to the bearing of the fixed box 201.

[0030] In this embodiment, the traction line 307 is pulled to drive the winding wheel 302 to rotate clockwise, and the winding wheel 302 drives the gear 303 to rotate through the rotating shaft 301. When the rotating shaft 301 rotates, it simultaneously drives the ratchet 304 to rotate clockwise. When the ratchet 304 rotates, it moves the pawl 305. The pawl 305 is always pressed against the ratchet 304 under the elastic force of the third spring 306. When the clamp arm 205 clamps the plate-like object, the pawl 305 blocks the ratchet 304 from reversing. The wheels 303 cannot retreat, and the position of the rack 202 is locked. By arranging the ratchet 304 and the pawl 305 on the rotating shaft 301, pulling the traction line 307 can drive the clamping arm 205 to automatically lock the position of the device, which is convenient for quick installation and reduces the difficulty of installation. It is convenient for outdoor camping and other occasions. When the device needs to be disassembled, press the top of the pawl 305 downward, and then move the pawl 305 to the right to disengage it from the ratchet 304, thereby releasing the lock of the rotating shaft 301.

[0031] It should be noted that the utility model is an impact-resistant LED display screen. Before use, the device needs to be fixed first. Pull the traction line 307 to drive the winding wheel 302 to rotate clockwise. The winding wheel 302 drives the gear 303 to rotate through the rotating shaft 301. The gear 303 simultaneously engages the two racks 202, so that it drives the clamping arms 205 to slide inward along the guide rail 204, so that the two clamping arms 205 clamp the plate-like object in the area to be fixed, and the display screen is quickly installed. When the shaft 301 rotates, the ratchet 304 is synchronously driven to rotate clockwise. When the ratchet 304 rotates, the pawl 305 is moved. The pawl 305 is always pressed against the ratchet 304 under the elastic force of the third spring 306. When the clamp arm 205 clamps the plate-like object, the pawl 305 blocks the ratchet 304 from reversing. Therefore, the shaft 301 and the gear 303 cannot retreat, and the position of the rack 202 is locked. By arranging the ratchet 304 and the pawl 305 on the shaft 301, the traction line is pulled. 307 can drive the clamping arm 205 to automatically lock the device position, which is convenient for quick installation and reduces the difficulty of installation. It is convenient for use in occasions such as outdoor camping. When the device needs to be disassembled, press the top of the pawl 305 downward, and then move the pawl 305 to the right to disengage it from the ratchet 304, releasing the lock of the rotating shaft 301. At this time, the compressed second spring 203 drives the two racks 202 to reset through elastic force, the gear 303 and the winding wheel 302 reverse, and the traction line 307 is rewound onto the winding wheel 302, and the clamping arm 205 is synchronously reset to contact the device and fixed. The design of arranging the second spring 203 on the outside of the rack 202 facilitates the overall reset driven by elastic force, further improving the convenience of operation. When in use, the support frame 101 wraps the outside of the display 102. When it is hit, the damping rod 104 absorbs vibration to prevent the display 102 from being damaged. The first spring 103 drives the damping rod 104 to reset through elastic force to maintain the normal height of the display 102.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An impact-resistant LED display screen, comprising a display device (1), characterized in that: A fixing device (2) is arranged behind the display device (1), and a rotating device (3) is arranged in the middle of the fixing device (2); The fixing device (2) comprises a fixing box (201), two guide rails (204) are symmetrically arranged inside the fixing box (201), a rack (202) is slidably arranged on the guide rail (204), a second spring (203) is fixedly arranged on the outside of the rack (202), and a clamping arm (205) is fixedly arranged behind the rack (202); The rotating device (3) comprises a rotating shaft (301), a winding wheel (302) is arranged at the front end of the rotating shaft (301), a traction line (307) is arranged on the winding wheel (302), a gear (303) is arranged in the middle of the rotating shaft (301), a ratchet (304) is arranged at the rear end of the rotating shaft (301), a ratchet pawl (305) is arranged at the top of the ratchet (304), and a third spring (306) is fixedly arranged on one side of the ratchet pawl (305).

2. The impact-resistant LED display according to claim 1, characterized in that: The display device (1) comprises a support frame (101), a display (102) is installed inside the support frame (101), a first spring (103) is fixedly arranged at the bottom of the display (102), and a damping rod (104) is arranged in the middle of the first spring (103).

3. The impact-resistant LED display according to claim 1, characterized in that: The guide rail (204) has a T-shaped cross section.

4. The impact-resistant LED display according to claim 2, characterized in that: The second spring (203) is bolted to the fixing box (201), and the clamping arm (205) is L-shaped.

5. The impact-resistant LED display according to claim 1, characterized in that: The winding wheel (302), the gear (303) and the ratchet (304) are respectively connected to the rotating shaft (301) by parallel keys.

6. The impact-resistant LED display according to claim 1, characterized in that: The third spring (306) is bolted to the fixed box (201), and the rotating shaft (301) is bearing-connected to the fixed box (201).

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