Large-screen whole-screen rear projection display device

Abstract

The utility model belongs to the technical field of rear projection display devices, and particularly relates to a large-screen whole-screen rear projection display device which comprises fixed columns, sliding grooves are formed in the sides, away from each other, of the fixed columns, a sliding column is connected into each sliding groove in a sliding mode, a plurality of threaded holes are formed in the upper surface of each sliding column, and the threaded holes are matched with the threaded holes. And two bolts are movably connected to the upper surface of the fixed column in a penetrating manner. Through the arrangement of the first threaded rod, the second conical teeth, the sliding blocks, the clamping columns, the connecting frames and the like, two fixing rods on the LED auxiliary display panel are inserted into the corresponding connecting frames, then the rotating disc is rotated, the rotating disc drives the first conical teeth to rotate through the rotating columns, and the LED auxiliary display panel is fixed through the sliding blocks. The first conical teeth drive the corresponding first threaded rods to rotate through the two second conical teeth, the two first threaded rods drive the corresponding clamping columns to move, the two clamping columns are clamped in the corresponding fixing holes, the LED auxiliary display panel is fixed, operation is easy, and the assembling efficiency can be improved easily.

Description

Technical Field

[0001] This utility model relates to the field of rear projection display technology, and in particular to a large-screen full-screen rear projection display device. Background Technology

[0002] Large-screen rear projection displays are commonly found in shopping malls, commercial performances, or plazas. These displays feature high brightness, high definition, vibrant colors, and large screen size. They also have multiple input interfaces to accommodate various video and computer signal input formats.

[0003] However, in existing equipment, most large-screen rear projection displays are assembled from multiple LED panels. Assembly requires multiple workers to install them with bolts, which is cumbersome and inefficient. Therefore, a large-screen full-screen rear projection display device is proposed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a large-screen full-screen rear projection display device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a large-screen full-screen rear projection display device, comprising a fixed column, a sliding groove provided on the opposite side of each fixed column, a sliding column slidably connected in each sliding groove, multiple threaded holes on the upper surface of each sliding column, two bolts movably connected through the upper surface of the fixed column, each bolt being adapted to a corresponding threaded hole, a movable column fixedly connected to the opposite end of each of the two sliding columns, two universal wheels movably connected to the bottom of each movable column, an outer column fixedly connected to the opposite end of each movable column, a telescopic component provided on each outer column, a column fixedly connected to the upper surface of the fixed column, a fixing block fixedly connected to the upper surface of the column, an LED main display panel fixedly connected to one side of the fixing block, two fixing structures provided on the LED main display panel, an LED secondary display panel provided on the opposite side of the LED main display panel, two fixing rods fixedly connected to one side of each LED secondary display panel, and a fixing hole provided on one side of each fixing rod.

[0006] As a further description of the above technical solution:

[0007] The fixing structure includes a fixing frame fixedly connected to one side of the LED main display panel, a rotating column rotatably connected through one side of the fixing frame, a first conical tooth fixedly connected to one end of the rotating column, and a rotating disk fixedly connected to the other end of the rotating column.

[0008] As a further description of the above technical solution:

[0009] Each of the fixed frames is rotatably connected to a first threaded rod on the opposite side. Each of the two first threaded rods is fixedly connected to a second conical tooth at one end. Both second conical teeth mesh with the first conical teeth. Each of the first threaded rods is threaded with a snap-fit ​​post.

[0010] As a further description of the above technical solution:

[0011] Two sliding blocks are fixedly connected to one side of the LED main display panel, and one end of each locking post is slidably connected through to one side of the corresponding sliding block.

[0012] As a further description of the above technical solution:

[0013] Two connecting frames are fixedly connected to one side of the LED main display panel. The inner sidewalls of the two connecting frames are movably connected to the corresponding fixing rods. The ends of the two locking posts that are far apart are slidably connected through the corresponding connecting frames to one side. The two locking posts are respectively adapted to the corresponding fixing holes.

[0014] As a further description of the above technical solution:

[0015] The telescopic assembly includes an inner sleeve column that is slidably connected inside the outer sleeve column. A rubber pad is fixedly connected to the bottom of the inner sleeve column. A second threaded rod is threadedly connected to the upper surface of the inner sleeve column. One end of the second threaded rod passes through and is rotatably connected to the inside of the outer sleeve column and is fixedly connected to a rotating disk.

[0016] This utility model has the following beneficial effects:

[0017] 1. Compared with existing technologies, this large-screen rear projection display device uses a fixed frame, rotating column, first conical tooth, first threaded rod, second conical tooth, sliding block, snap-fit ​​post, and connecting frame to insert two fixed rods on the LED sub-display board into the corresponding connecting frame. Then, the rotating disk rotates, and the rotating disk drives the first conical tooth to rotate through the rotating column. The first conical tooth drives the corresponding first threaded rod to rotate through two second conical teeth. The two first threaded rods drive the corresponding snap-fit ​​post to move, so that the two snap-fit ​​posts are snapped into the corresponding fixed holes to fix the LED sub-display board. The operation is simple and helps to improve assembly efficiency.

[0018] 2. Compared with the prior art, this large-screen rear projection display device, by setting a second threaded rod, a rotating disk and an inner sleeve column, rotates the rotating disk 602, which drives the second threaded rod 601 to rotate, and the second threaded rod 601 drives the inner sleeve column 603 to move. The inner sleeve column 603 drives the rubber pad to move, and the rubber pad contacts the ground and causes the four universal wheels 4 to leave the ground, reducing the probability of the large screen moving due to accidents. Attached Figure Description

[0019] Figure 1 This is a first-view three-dimensional structural diagram of a large-screen full-screen rear projection display device proposed in this utility model.

[0020] Figure 2 This is a second-view stereoscopic structural diagram of a large-screen full-screen rear projection display device proposed in this utility model.

[0021] Figure 3 This invention presents an exploded view of the LED main display screen and LED secondary display screen of a large-screen rear projection display device.

[0022] Figure 4 This is a schematic diagram of the fixing structure of a large-screen rear projection display device proposed in this utility model;

[0023] Figure 5 An exploded view of the fixed structure of a large-screen rear projection display device proposed in this utility model;

[0024] Figure 6 Exploded view of the fixed column and sliding column of the large-screen full-screen rear projection display device proposed in this utility model;

[0025] Figure 7 This is an exploded view of the telescopic component of a large-screen rear projection display device proposed in this utility model.

[0026] Legend:

[0027] 1. Fixed column; 2. Sliding column; 3. Moving column; 4. Caster wheel; 5. Outer column; 6. Telescopic assembly; 601. Second threaded rod; 602. Rotating disk; 603. Inner sleeve column; 7. Upright column; 8. Fixing block; 9. LED main display panel; 10. LED secondary display panel; 11. Fixing rod; 12. Fixing structure; 121. Fixing frame; 122. Rotating column; 123. First conical tooth; 124. First threaded rod; 125. Second conical tooth; 126. Sliding block; 127. Snap-fit ​​column; 128. Connecting frame. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figures 1 to 7This utility model provides a large-screen rear projection display device, comprising a fixed column 1, with sliding grooves on the opposite sides of each fixed column 1. A sliding column 2 is slidably connected within each sliding groove. Multiple threaded holes are formed on the upper surface of each sliding column 2. Two bolts are movably connected through the upper surface of the fixed column 1, each bolt fitting into a corresponding threaded hole. Movable columns 3 are fixedly connected to the opposite ends of the two sliding columns 2. Two casters 4 are movably connected to the bottom of each movable column 3. Removing the bolts and pulling the sliding column 2 outwards to a suitable position causes the sliding column 2 to move the movable column 3, which in turn moves the casters 4, expanding the support area and improving the overall display quality. The stability of the screen is achieved by using casters 4 to move the main LED display panel 9 and the secondary LED display panel 10 to the appropriate positions. Each moving column 3 has an outer column 5 fixedly connected to its far side. Each outer column 5 is equipped with a telescopic component 6. A column 7 is fixedly connected to the upper surface of the fixed column 1. A fixing block 8 is fixedly connected to the upper surface of the column 7. The main LED display panel 9 is fixedly connected to one side of the fixing block 8. The main LED display panel 9 is equipped with two fixing structures 12. Each secondary LED display panel 10 is equipped with two fixing rods 11 fixedly connected to one side of each secondary LED display panel 10. Each fixing rod 11 has a fixing hole on one side.

[0030] Reference Figure 3 , Figure 4 and Figure 5To improve assembly efficiency, the fixing structure 12 includes a fixing frame 121 fixedly connected to one side of the LED main display panel 9. A rotating column 122 is rotatably connected through one side of the fixing frame 121. A first conical tooth 123 is fixedly connected to one end of the rotating column 122, and a rotating disk is fixedly connected to the other end of the rotating column 122. First threaded rods 124 are rotatably connected through the opposite sides of the fixing frame 121. Second conical teeth 125 are fixedly connected to the opposite ends of the two first threaded rods 124, and both second conical teeth 125 are engaged with the first conical teeth 123. Each first threaded rod 124 is threadedly connected to a locking post 127. Two sliding blocks 126 are fixedly connected to one side of the LED main display panel 9. One end of each locking post 127 is slidably connected through to one side of the corresponding sliding block 126. Two connecting frames 128 are fixedly connected to one side of the LED sub-display panel 9. The inner sidewalls of the two connecting frames 128 are movably connected to the corresponding fixing rods 11. The ends of the two locking posts 127 that are far apart are slidably connected to one side of the corresponding connecting frame 128. The two locking posts 127 are adapted to the corresponding fixing holes. The two fixing rods 11 on the LED sub-display panel 10 are inserted into the corresponding connecting frames 128. Then, the rotating disk is rotated. The rotating disk drives the first conical tooth 123 to rotate through the rotating post 122. The first conical tooth 123 drives the corresponding first threaded rod 124 to rotate through the two second conical teeth 125. The two first threaded rods 124 drive the corresponding locking posts 127 to move, so that the two locking posts 127 are locked in the corresponding fixing holes, thus fixing the LED sub-display panel 10. The operation is simple and helps to improve the assembly efficiency.

[0031] Reference Figure 7 To reduce the likelihood of the large screen moving, the telescopic component 6 includes an inner sleeve column 603 slidably connected inside the outer sleeve column 5. A rubber pad is fixedly connected to the bottom of the inner sleeve column 603, and a second threaded rod 601 is threadedly connected to the upper surface of the inner sleeve column 603. One end of the second threaded rod 601 is rotatably connected to the inside of the outer sleeve column 5 and fixedly connected to a rotating disk 602. The rotating disk 602 drives the second threaded rod 601 to rotate, and the second threaded rod 601 drives the inner sleeve column 603 to move. The inner sleeve column 603 drives the rubber pad to move, and the rubber pad contacts the ground, causing the four casters 4 to detach from the ground, thus reducing the likelihood of the large screen moving due to accidents.

[0032] Working principle: Insert the two fixing rods 11 on the LED sub-display panel 10 into the corresponding connecting frame 128, and then rotate the rotating disk. The rotating disk drives the first conical tooth 123 to rotate through the rotating column 122. The first conical tooth 123 drives the corresponding first threaded rod 124 to rotate through the two second conical teeth 125. The two first threaded rods 124 drive the corresponding snap-fit ​​pins 127 to move, so that the two snap-fit ​​pins 127 are snapped into the corresponding fixing holes, thus fixing the LED sub-display panel 10. The operation is simple and helps to improve the assembly efficiency. After fixing, the LED main display panel 9 and the LED sub-display panel 10 can be moved to the appropriate position through the casters 4. Then rotate the rotating disk 602. The rotating disk 602 drives the second threaded rod 601 to rotate. The second threaded rod 601 drives the inner sleeve column 603 to move. The inner sleeve column 603 drives the rubber pad to move. The rubber pad contacts the ground and makes the four casters 4 off the ground, reducing the probability of the large screen moving due to accidents.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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. A large-screen rear projection display device, comprising a fixing column (1), characterized in that: Each of the fixed columns (1) has a sliding groove on its opposite side, and a sliding column (2) is slidably connected in each sliding groove. Each sliding column (2) has multiple threaded holes on its upper surface. Two bolts are movably connected through the upper surface of the fixed column (1), and each bolt is adapted to a corresponding threaded hole. A movable column (3) is fixedly connected to the opposite end of each of the two sliding columns (2). Two casters (4) are movably connected to the bottom of each movable column (3). An outer sleeve column (5) is fixedly connected to the opposite end of each movable column (3). (5) Each of them is provided with a telescopic component (6). The upper surface of the fixed column (1) is fixedly connected with a column (7). The upper surface of the column (7) is fixedly connected with a fixing block (8). One side of the fixing block (8) is fixedly connected with an LED main display panel (9). The LED main display panel (9) is provided with two fixing structures (12). The LED main display panel (9) is provided with an LED secondary display panel (10) on the side away from each other. Two fixing rods (11) are fixedly connected to one side of each LED secondary display panel (10). A fixing hole is opened on one side of each fixing rod (11).

2. The large-screen full-screen rear projection display device according to claim 1, characterized in that: The fixed structure (12) includes a fixed frame (121) fixedly connected to one side of the LED main display panel (9). A rotating column (122) is rotatably connected through one side of the fixed frame (121). A first conical tooth (123) is fixedly connected to one end of the rotating column (122), and a rotating disk is fixedly connected to the other end of the rotating column (122).

3. The large-screen full-screen rear projection display device according to claim 2, characterized in that: Each of the two fixed frames (121) is rotatably connected to a first threaded rod (124) on the opposite side. Each of the two first threaded rods (124) is fixedly connected to a second conical tooth (125) at the opposite end. Each of the two second conical teeth (125) is engaged with a first conical tooth (123). Each of the first threaded rods (124) is threaded with a snap-fit ​​post (127).

4. The large-screen rear projection display device according to claim 3, characterized in that: Two sliding blocks (126) are fixedly connected to one side of the LED main display panel (9), and one end of each snap-fit ​​post (127) is slidably connected to one side of the corresponding sliding block (126).

5. A large-screen full-screen rear projection display device according to claim 3, characterized in that: Two connecting frames (128) are fixedly connected to one side of the LED main display panel (9). The inner sidewalls of the two connecting frames (128) are movably connected to the corresponding fixing rods (11). The ends of the two locking posts (127) that are far apart are slidably connected to one side of the corresponding connecting frame (128). The two locking posts (127) are respectively adapted to the corresponding fixing holes.

6. A large-screen rear projection display device according to claim 1, characterized in that: The telescopic component (6) includes an inner sleeve (603) that is slidably connected inside the outer sleeve (5). A rubber pad is fixedly connected to the bottom of the inner sleeve (603). A second threaded rod (601) is threadedly connected to the upper surface of the inner sleeve (603). One end of the second threaded rod (601) is rotatably connected to the inside of the outer sleeve (5) and fixedly connected to a rotating disk (602).

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