LED lamp box with canvas convenient to replace

Abstract

The utility model relates to the technical field of outdoor illumination and display, in particular to an LED lamp box convenient for replacing canvas, which comprises a box body, a cover body is slidably connected to the top end inside the box body, a rotating shaft is rotatably connected to the inside of the cover body, two pull ropes are fixedly connected to the outer wall of the rotating shaft, and the outer wall of the rotating shaft is fixedly connected with the outer wall of the box body. Two symmetrically-distributed second limiting plates are fixedly connected to the interior of the cover body, clamping rods extending to the exterior of the cover body are slidably connected to the interiors of the two second limiting plates correspondingly, the other ends of the two pull ropes are fixedly connected with the two clamping rods correspondingly, and third limiting plates are fixedly connected to the outer walls of the two clamping rods correspondingly; the outer walls of the two clamping rods are sleeved with second springs located between the second limiting plate and the third limiting plate, and the clamping rods can be clamped into the clamping holes or disengaged from the clamping holes through cooperation of the handle, the rotating shaft, the pull rope, the second limiting plate, the third limiting plate, the clamping rods and the second springs, so that the cover body is mounted or dismounted, and the canvas is convenient to replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to outdoor lighting and display technical field, specifically disclose a LED lamp house convenient for replacing canvas. BACKGROUND

[0002] In modern life, with the continuous prosperity of economy and commerce, more and more LED advertising lamp boxes appear in the streets and alleys, and the types of advertising lamp boxes are also more and more, and the canvas type advertising lamp box is favored by merchants because of its high picture accuracy, good color restoration, quality and stable advantages.

[0003] The existing LED canvas type advertising lamp box needs to twist multiple screws to disassemble the advertising lamp box when replacing the canvas, which is not convenient for replacing the canvas, therefore, a LED lamp house convenient for replacing canvas is needed to solve this problem. INVENTION CONTENTS

[0004] The utility model provides a LED lamp house convenient for replacing canvas, through the handle is twisted, can dismantle and install with the cover and the box, it is convenient for replacing the canvas.

[0005] The utility model is such a realization, a LED lamp house convenient for replacing canvas, including the box, the rear end surface of the inside of the box is installed with LED lamp, the top end of the inside of the box is connected with the cover and slides, the lower end surface of the cover is fixedly connected with two fixed plates of symmetry distribution, the front side of two fixed plates is provided with the pressing plate, the rear end surface of the pressing plate is fixedly connected with two slide rods, two slide rods are all with fixed plate sliding connection, the rear end surface of the slide rod is fixedly connected with first limit board, the first spring of first limit board and fixed plate between of the outer wall of the slide rod is connected, the fixed plate and the pressing plate are clamped and fixed with the canvas;

[0006] The inside of the cover is rotatably connected with the rotating shaft, the outer wall of the rotating shaft is fixedly connected with two pull ropes, the inside of the cover is fixedly connected with two symmetrically distributed second limit boards, the inside of two second limit boards is slidably connected with the clamping rod extending to the outside of the cover, the other end of two pull ropes is fixedly connected with two clamping rods respectively, the outer wall of two clamping rods is fixedly connected with third limit board, the outer wall of two clamping rods is connected with the second spring between second limit board and third limit board, the inner wall of the box is provided with two clamping holes matched with clamping rod.

[0007] In order to facilitate the rotation of the shaft, prevent the shaft from coming out of the cover, as a kind of LED lamp house convenient for replacing canvas of the utility model is preferred, the outer wall of the rotating shaft is fixedly connected with two limit rings abutting with the inner wall of the cover.

[0008] To facilitate the rotation of the rotating shaft, as a preferred embodiment of this utility model of an LED lightbox that allows for easy canvas replacement, the upper end of the rotating shaft extends to the outside of the cover and is fixedly connected to a handle.

[0009] To facilitate increasing the friction between the canvas, the fixing plate, and the pressure plate, as a preferred embodiment of this utility model of an LED lightbox that allows for easy canvas replacement, rubber pads are provided on the outer walls of the fixing plate and the pressure plate.

[0010] To extend the lifespan of the pull cord, the pull cord is preferably made of steel wire, which is a preferred design for an LED lightbox that facilitates canvas replacement according to this invention.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This type of LED lightbox, which facilitates canvas replacement, uses a handle, a pivot, a pull rope, a second limiting plate, a third limiting plate, a locking rod, and a second spring to engage or disengage the locking rod into or out of the locking hole, thereby installing or removing the cover. The cover can be disassembled and installed from the box body by turning the handle, making it convenient to replace the canvas. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of an LED lightbox for easy canvas replacement according to the present invention.

[0014] Figure 2 This is an anatomical diagram of an LED lightbox for easy canvas replacement according to the present invention.

[0015] Figure 3 This is a sectional view of the housing of this utility model;

[0016] Figure 4 This is a left view of the fixing plate and pressure plate of this utility model;

[0017] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle;

[0018] Figure 6 This is a cross-sectional view of the cover of this utility model;

[0019] Figure 7 This utility model Figure 6 Enlarged view of point B in the middle;

[0020] Figure 8 This is a diagram showing the internal structure of the cover of this utility model;

[0021] Figure 9 This utility model Figure 8 Enlarged view of point C in the middle.

[0022] In the diagram, 1. Box body; 2. Cover; 3. Fixing plate; 4. Pressure plate; 5. Slide rod; 6. First limiting plate; 7. First spring; 8. Canvas; 9. LED light; 10. Rotating shaft; 11. Second limiting plate; 12. Locking rod; 13. Third limiting plate; 14. Second spring; 15. Pull rope; 16. Handle; 17. Limiting ring; 18. Locking hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Please see Figures 1-9 An LED lightbox for easy canvas replacement includes a box body 1. An LED light 9 is installed on the rear end face inside the box body 1. A cover 2 is slidably connected to the top of the box body 1. Two symmetrically distributed fixing plates 3 are fixedly connected to the lower end face of the cover 2. A pressure plate 4 is provided on the front side of each of the two fixing plates 3. Two sliding rods 5 are fixedly connected to the rear end face of the pressure plate 4. Both sliding rods 5 are slidably connected to the fixing plate 3. A first limiting plate 6 is fixedly connected to the rear end face of the sliding rod 5. A first spring 7 located between the first limiting plate 6 and the fixing plate 3 is sleeved on the outer wall of the sliding rod 5. A canvas 8 is clamped and fixed between the fixing plate 3 and the pressure plate 4.

[0026] The inside of the cover 2 is rotatably connected to a rotating shaft 10. Two pull ropes 15 are fixedly connected to the outer wall of the rotating shaft 10. The inside of the cover 2 is fixedly connected to two symmetrically distributed second limiting plates 11. The inside of each of the two second limiting plates 11 is slidably connected to a locking rod 12 extending to the outside of the cover 2. The other ends of the two pull ropes 15 are fixedly connected to the two locking rods 12 respectively. The outer walls of each of the two locking rods 12 are fixedly connected to a third limiting plate 13. The outer walls of each of the two locking rods 12 are fitted with a second spring 14 located between the second limiting plate 11 and the third limiting plate 13. The inner wall of the box 1 has two locking holes 18 that match the locking rods 12.

[0027] In this embodiment: when changing the canvas 8, the handle 16 rotates the shaft 10, which pulls the two locking rods 12 relative to each other via the pull rope 15. This, in turn, compresses the second spring 14 via the third limiting plate 13, causing the locking rods 12 to disengage from the locking holes 18. At this point, the cover 2 can be lifted from the box 1, and the canvas 8 can be removed via the fixing plate 3 and the pressure plate 4. Pulling the pressure plate 4 forward causes it to move forward and slide the slide rod 5 forward, compressing the first spring 7. This causes the pressure plate 4 to lose its clamping force on the canvas 8, allowing it to be removed. Remove the canvas 8 and place the new canvas 8 between the fixing plate 3 and the pressure plate 4. Loosen the pressure plate 4, and the pressure plate 4 will clamp and fix the canvas 8 between the fixing plate 3 and the pressure plate 4 under the elastic force of the first spring 7. Put the canvas 8 back into the box 1, so that the cover 2 slides into the box 1. Loosen the handle 16, and the two locking rods 12 will re-lock into the locking holes 18 under the elastic force of the second spring 14, fixing the cover 2 to the box 1. The cover 2 can be disassembled and installed from the box 1 by turning the handle 16, making it convenient to replace the canvas 8.

[0028] As a technical optimization of this utility model, the outer wall of the rotating shaft 10 is fixedly connected with two limiting rings 17 that abut against the inner wall of the cover 2.

[0029] In this embodiment, the limiting ring 17 is used to limit the rotating shaft 10 and prevent the rotating shaft 10 from coming off the cover 2.

[0030] As a technical optimization of this utility model, the upper end of the rotating shaft 10 extends to the outside of the cover 2 and is fixedly connected to a handle 16.

[0031] In this embodiment, the handle 16 facilitates the rotation of the shaft 10 and the lifting of the cover 2 from the box 1.

[0032] As a technical optimization of this utility model, rubber pads are provided on the outer walls of the fixing plate 3 and the pressure plate 4 respectively.

[0033] In this embodiment, rubber pads are provided on the outer walls of the fixed plate 3 and the pressure plate 4 to increase the friction between the canvas 8 and the fixed plate 3 and the pressure plate 4, so that the canvas 8 is firmly clamped.

[0034] As a technical optimization of this utility model, the pull rope 15 is made of steel wire.

[0035] In this embodiment, by setting the pull rope 15 to a steel wire material, the strength of the pull rope 15 can be increased, thus extending its service life.

[0036] The working principle and usage process of this utility model are as follows: When replacing the canvas 8, firstly, rotate the shaft 10 by the handle 16. The shaft 10 pulls the two locking rods 12 relative to each other through the pull rope 15, and compresses the second spring 14 through the third limiting plate 13, causing the locking rods 12 to disengage from the locking holes 18. At this time, the cover 2 can be lifted from the box 1, and then the canvas 8 can be taken out through the fixing plate 3 and the pressure plate 4. Next, pull the pressure plate 4 forward, and the pressure plate 4 moves forward and drives the sliding rod 5 to slide forward, thereby compressing the first spring 7, so that the pressure plate 4 loses its pressure on the canvas 8. With the clamping force applied, the canvas 8 can be removed. Place the new canvas 8 between the fixing plate 3 and the pressure plate 4, and release the pressure plate 4. Under the elastic force of the first spring 7, the pressure plate 4 clamps and fixes the canvas 8 between the fixing plate 3 and the pressure plate 4. Then, put the canvas 8 back into the box 1, allowing the cover 2 to slide into the box 1. Release the handle 16, and the two locking rods 12 will re-lock into the locking holes 18 under the elastic force of the second spring 14, fixing the cover 2 to the box 1. The cover 2 can be disassembled and installed from the box 1 by turning the handle 16, making it convenient to replace the canvas 8.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An LED lightbox for easy canvas replacement, comprising a housing (1), wherein an LED light (9) is installed on the rear end face inside the housing (1), characterized in that: The top of the box (1) is slidably connected to a cover (2). The lower end face of the cover (2) is fixedly connected to two symmetrically distributed fixing plates (3). The front side of each of the two fixing plates (3) is provided with a pressure plate (4). The rear end face of the pressure plate (4) is fixedly connected to two slide rods (5). Both slide rods (5) are slidably connected to the fixing plate (3). The rear end face of the slide rod (5) is fixedly connected to a first limiting plate (6). The outer wall of the slide rod (5) is sleeved with a first spring (7) located between the first limiting plate (6) and the fixing plate (3). A canvas (8) is clamped and fixed between the fixing plate (3) and the pressure plate (4). The cover (2) is rotatably connected to a rotating shaft (10). Two pull ropes (15) are fixedly connected to the outer wall of the rotating shaft (10). Two symmetrically distributed second limiting plates (11) are fixedly connected to the inside of the cover (2). The two second limiting plates (11) are slidably connected to a locking rod (12) extending to the outside of the cover (2). The other ends of the two pull ropes (15) are fixedly connected to the two locking rods (12). The outer walls of the two locking rods (12) are fixedly connected to a third limiting plate (13). The outer walls of the two locking rods (12) are fitted with a second spring (14) located between the second limiting plate (11) and the third limiting plate (13). The inner wall of the box (1) has two locking holes (18) that match the locking rods (12).

2. The LED lightbox with easily replaceable canvas according to claim 1, characterized in that: The outer wall of the rotating shaft (10) is fixedly connected to two limiting rings (17) that abut against the inner wall of the cover (2).

3. The LED lightbox with easily replaceable canvas according to claim 1, characterized in that: The upper end of the pivot (10) extends to the outside of the cover (2) and is fixedly connected to a handle (16).

4. The LED lightbox with easily replaceable canvas according to claim 1, characterized in that: Rubber pads are provided on the outer walls of the fixing plate (3) and the pressure plate (4) respectively.

5. The LED lightbox with easily replaceable canvas according to claim 1, characterized in that: The pull rope (15) is made of steel wire.

Images