Light leakage prevention LED display screen

Abstract

The utility model relates to the technical field of LED display screens, in particular to a light leakage prevention LED display screen which comprises a back plate, and a supporting frame is installed on one side of the back plate. A fixed frame is arranged on the other side of the back plate along the edge of the back plate, the fixed frame is detachably mounted on the back plate, and a liquid crystal screen is arranged between the fixed frame and the back plate; push plates are arranged at the corners of the side, close to the back plate, of the liquid crystal screen, screws are rotationally installed on the sides, close to the back plate, of the push plates, the screws penetrate through the back plate and are in threaded connection with the back plate, a strip-shaped pressing plate is arranged between every two adjacent push plates, and the front projection of each pressing plate is located on the side, close to the liquid crystal screen, of the corresponding push plate. When the light leakage prevention LED display screen is used, the push plate can move towards or be far away from the liquid crystal display screen through rotation of the screw rod, so that the pressing plate can be pressed on the liquid crystal display screen, the liquid crystal display screen is tightly attached to the fixing frame, and the conditions that a gap is reserved between the liquid crystal display screen and the fixing frame, light is exposed from the gap, and light leakage occurs are prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED display screen technical field especially relates to a light leakage prevention LED display screen. BACKGROUND

[0002] ‌LED display screen is a kind of display screen for displaying various information such as text, graphics, images, animation, market situation, video and video signal by controlling the display mode of semiconductor light-emitting diode.

[0003] With the passage of time, the pressure applied on the display panel changes, for example, clamping camera on the display, peripheral ornaments, or improper installation of display and support, forcibly cleaning the screen surface, etc., all of which can cause the panel to physically warp and affect the way light passes through the LCD layer, thereby exacerbating light leakage. To this end, we propose a light leakage prevention LED display screen to solve the above problems. SUMMARY

[0004] The utility model discloses a light leakage prevention LED display screen to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a light leakage prevention LED display screen is designed, which comprises a back plate, a support frame is installed on one side of the back plate;

[0006] A fixed frame is provided on the other side of the back plate along its edge, and the fixed frame is detachably installed on the back plate. A liquid crystal screen is provided between the fixed frame and the back plate.

[0007] A push plate is provided on the side edge of the liquid crystal screen close to the back plate, and a screw rod is rotatably installed on the side of the push plate close to the back plate. The screw rod penetrates the back plate and is threadedly connected thereto. A strip-shaped pressing plate is provided between the adjacent two push plates. The front view projection of the pressing plate is located on the side of the push plate close to the liquid crystal screen, and the edge of the pressing plate corresponds to the edge of the liquid crystal screen. The end of the pressing plate is connected with an arc-shaped connecting plate, and the other end of the connecting plate is fixed on the push plate. The pressing plate and the connecting plate are both elastic sheets.

[0008] Preferably, a first limiting plate is vertically installed along the side edge of the back plate close to the fixed frame, and a second limiting plate is provided outside the first limiting plate. The second limiting plate is in clearance fit with the first limiting plate, and the second limiting plate is fixed on the fixed frame. The first limiting plate and the second limiting plate are fixed by a plurality of sparsely arranged bolts.

[0009] Preferably, a buffer pad is installed on the side of the fixed frame close to the back plate and on the side of the pressing plate close to the liquid crystal screen, and the buffer pad corresponds to the liquid crystal screen.

[0010] Preferably, the buffer pad is an elastic rubber pad.

[0011] Preferably, a handle is installed at the end of the screw far from the push plate.

[0012] Preferably, the support frame comprises a connecting seat fixed on the middle of the back plate far from the fixed frame, the connecting seat is fixed on the lifting frame, and the bottom of the lifting frame is provided with a support foot.

[0013] Preferably, the support foot comprises two first support legs in strip shape, which are arranged on both sides of the bottom of the lifting frame and are arranged to be inclined towards the fixed frame.

[0014] The lifting frame further comprises a second support leg fixed on the bottom of the lifting frame and arranged on the side of the lifting frame far from the fixed frame.

[0015] The design scheme of the utility model has the beneficial effects in the application process:

[0016] 1. The anti-leakage light LED display screen can move or move away from the liquid crystal screen through the rotation of the screw, so that the pressing plate can be pressed on the liquid crystal screen, so that the liquid crystal screen is tightly fixed on the fixed frame, and the gap between the liquid crystal screen and the fixed frame is prevented, so that the light is exposed from the gap and the leakage light occurs.

[0017] 2. The anti-leakage light LED display screen is provided with the elastic pressing plate and the connecting plate, so that the pressing plate can be deformed when contacting the liquid crystal screen, and the elastic force is applied to the liquid crystal screen, so that the fastening between the liquid crystal screen and the fixed frame is improved, and the contact between the liquid crystal screen and the fixed frame is buffered, so that the liquid crystal screen is prevented from being damaged due to excessive extrusion force. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure of the utility model is shown Figure One ;

[0019] Figure 2 The structure of the utility model is shown Figure Two ;

[0020] Figure 3 The utility model is an explosion diagram

[0021] Figure 4 The back plate inside structure of the utility model is shown. In the drawing: 1, back plate; 2, fixed frame; 3, first limiting plate; 4, second limiting plate; 5, liquid crystal screen; 6, pressing plate; 7, connecting plate; 8, push plate; 9, screw; 10, handle; 11, buffer pad; 12, connecting seat; 13, lifting frame; 14, support foot. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments.

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Figures 1-4 A light leakage prevention LED display screen comprises a back plate 1, a support frame is installed on one side of the back plate 1, a fixed frame 2 is arranged along the edge of the other side of the back plate 1, the fixed frame 2 is detachably installed on the back plate 1, a liquid crystal screen 5 is arranged between the fixed frame 2 and the back plate 1, and the whole LED display screen is formed, in the actual use process, the liquid crystal screen 5 is composed of liquid crystal glass, diffusion sheet, rhombic lens, diffusion sheet, light guide plate and reflecting sheet.

[0024] The support frame comprises a connecting seat 12, the connecting seat 12 is fixed on the middle part of the side of the back plate 1 away from the fixed frame 2, the connecting seat 12 is fixed on the lifting frame 13, and the bottom of the lifting frame 13 is provided with a support foot 14, so that the whole liquid crystal screen 5 can be adjusted.

[0025] Further, the support foot 14 comprises two first support legs in strip shape, the first support legs are arranged on the two sides of the bottom of the lifting frame 13 and are arranged to be inclined towards the fixed frame 2; the lifting frame 13 further comprises a second support leg, the second support leg is fixed on the bottom of the lifting frame 13 and is arranged on the side of the lifting frame 13 away from the fixed frame 2, so as to form multi-directional support, thereby improving the support stability of the lifting frame 13 to the liquid crystal screen 5.

[0026] In the installation process, the first limiting plate 3 is vertically installed along the side edge of the back plate 1 close to the fixed frame 2, the second limiting plate 4 is arranged outside the first limiting plate 3, the second limiting plate 4 is gap matched with the first limiting plate 3, the second limiting plate 4 is fixed on the fixed frame 2, and the first limiting plate 3 and the second limiting plate 4 are fixed by a plurality of interval arranged bolts, the liquid crystal screen 5 is placed in the first limiting plate 3, then the fixed frame 2 is taken and the second limiting plate 4 is covered on the first limiting plate 3, and the two limiting plates are fixed by using the bolts, so that the fixing of the bolts is facilitated, and the installation stability between the fixed frame 2 and the back plate 1 is ensured.

[0027] With the continuous use of the liquid crystal screen 5, if a gap appears between the liquid crystal screen 5 and the fixed frame 2 to cause light leakage, a push plate 8 is arranged at each side edge corner of the liquid crystal screen 5 close to the back plate 1, a screw rod 9 is rotatably arranged at the side of the push plate 8 close to the back plate 1, the screw rod 9 penetrates through the back plate 1 and is threadedly connected with the back plate 1, a strip-shaped pressing plate 6 is arranged between the two adjacent push plates 8, the front view projection of the pressing plate 6 is located at the side of the push plate 8 close to the liquid crystal screen 5, the pressing plate 6 corresponds to the edge of the liquid crystal screen 5, the end of the pressing plate 6 is connected with an arc-shaped connecting plate 7, the other end of the connecting plate 7 is fixed on the push plate 8, wherein the pressing plate 6 and the connecting plate 7 are elastic sheets, the screw rod 9 on the light leakage side can be twisted, the push plate 8 can push the pressing plate 6 to be close to the liquid crystal screen 5, so that the liquid crystal screen 5 is extruded, the liquid crystal screen 5 can be tightly attached to the fixed frame 2 again, and the gap causing the light leakage is prevented; in order to make the rotation of the screw rod 9 more labor-saving and convenient, a handle 10 is arranged at the end of the screw rod 9 away from the push plate 8.

[0028] It should be noted that the buffer pad 11 is arranged at the side of the fixed frame 2 close to the back plate 1 and at the side of the pressing plate 6 close to the liquid crystal screen 5, the buffer pad 11 corresponds to the liquid crystal screen 5, the buffer pad 11 is an elastic rubber pad, cooperates with the elastic effect of the connecting plate 7 and the pressing plate 6, improves the pushing and fastening effect of the pressing plate 6 on the liquid crystal screen 5, reduces the extrusion between the fixed frame 2 and the liquid crystal screen 5 and between the pressing plate 6 and the liquid crystal screen 5, and reduces the probability of damage of the liquid crystal screen 5. The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A light leakage prevention LED display screen, characterized in that: It includes a backboard (1), a support frame is installed on one side of the backboard (1); A fixed frame (2) is arranged on the other side of the backboard (1) along the edge thereof, the fixed frame (2) is detachably installed on the backboard (1), and a liquid crystal screen (5) is arranged between the fixed frame (2) and the backboard (1); A push plate (8) is arranged at each side corner of the liquid crystal screen (5) close to the backboard (1), a screw rod (9) is rotatably installed on one side of the push plate (8) close to the backboard (1), the screw rod (9) penetrates through the backboard (1) and is threadedly connected with the backboard (1), a strip-shaped pressing plate (6) is arranged between the adjacent two push plates (8), the normal projection of the pressing plate (6) is located on the side of the push plate (8) close to the liquid crystal screen (5), the pressing plate (6) corresponds to the edge of the liquid crystal screen (5), and the end of the pressing plate (6) is connected with an arc-shaped connecting plate (7), the other end of the connecting plate (7) is fixed to the push plate (8), wherein the pressing plate (6) and the connecting plate (7) are both elastic sheets.

2. The light leakage prevention LED display screen according to claim 1, characterized in that: A first limiting plate (3) is perpendicularly installed along the edge of the backboard (1) close to the fixed frame (2), a second limiting plate (4) is arranged outside the first limiting plate (3), the second limiting plate (4) is in gap cooperation with the first limiting plate (3), the second limiting plate (4) is fixed to the fixed frame (2), and the first limiting plate (3) and the second limiting plate (4) are fixed by a plurality of interval arranged bolts.

3. The light leakage proof LED display screen according to claim 2, characterized in that: A buffer pad (11) is installed on the side of the fixed frame (2) close to the backboard (1) and the side of the pressing plate (6) close to the liquid crystal screen (5), and the buffer pad (11) corresponds to the liquid crystal screen (5).

4. The light leakage prevention LED display screen according to claim 3, characterized in that: The buffer pad (11) is an elastic rubber pad.

5. The light leakage proof LED display screen according to claim 1, characterized in that: A handle (10) is installed on the end of the screw rod (9) away from the push plate (8).

6. The light leakage proof LED display screen according to claim 1, characterized in that: The support frame includes a connecting seat (12), the connecting seat (12) is fixed to the middle part of the side of the backboard (1) away from the fixed frame (2), the connecting seat (12) is fixed to a lifting frame (13), and the bottom of the lifting frame (13) is provided with a support foot (14).

7. The light leakage preventing LED display screen according to claim 1, characterized in that: The support foot (14) includes two first support legs in strip shape, the first support legs are arranged on the two sides of the bottom of the lifting frame (13) and are obliquely arranged towards the fixed frame (2); The support foot (14) further includes a second support leg, the second support leg is fixed to the bottom of the lifting frame (13) and is arranged on the side of the lifting frame (13) away from the fixed frame (2).

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