Flat large screen projector splicing device for parallel drawing image display

Abstract

The present invention discloses a flat large-screen projector splicing device for parallel drawing image display, and the problem to be solved is how to control the production cost of the projector splicing device and improve its correction convenience and stability. The device includes a plurality of horizontal displacement rods, a plurality of vertical displacement rods, a plurality of cross displacement racks, a plurality of projector brackets and a plurality of projectors. The cross displacement rack is formed by two hollow rods fixedly assembled in a cross shape. The horizontal displacement rod and the vertical displacement rod respectively pass through the horizontal and vertical hollow rods of the cross displacement rack. The projector bracket is fixedly connected to the cross displacement rack, and the projector is placed in the projector bracket. The device has low production cost and simple and effective correction work. The horizontal displacement rod and the vertical displacement rod cross each other to form a whole, which ensures the stability of correction and the flexibility of projection wall movement.

Description

Technical Field

[0001] The present invention relates to the technical field of display devices, in particular to the technical field of large-screen projector splicing display devices used for computer parallel drawing. Background Art

[0002] With the development of parallel rendering technology and the improvement of computer 3D scene rendering performance, the backwardness of 2D display technology has become more obvious. Although computer hardware has developed rapidly, the technical indicators of various display terminals, such as computer monitors, have been progressing slowly. The backward development of display technology has seriously affected the progress of computers brought about by other hardware improvements. How to display high-resolution, multi-pipeline input video content is a problem that needs to be solved.

[0003] Computer parallel rendering of images is a typical example of such problems. A more common solution is to splice multiple projector arrays to display ultra-high-resolution images in real time, where each projector is responsible for displaying its own corresponding computer graphics pipeline. For example, Minnesota's power Wall, Princeton's Scalable Display Wall, UNC's PixelFlex, and the projection wall Display-wall-in-a-Box jointly established by NCSA and UIUC. In addition, ViswallTM is a commercial product produced by Visbox in the United States. The projection wall can be composed of 9 to 96 projectors, providing display resolutions from 3072*2304 to 12288x6144. This solution has two outstanding advantages: the first is high resolution, which makes it more realistic and more details can be displayed in the fields of large-scale parallel rendering visualization and virtual reality; the second is the ultra-large display screen, which allows more people to watch at the same time, improving viewing and communication efficiency.

[0004] The biggest problem faced by this type of parallel drawing projector splicing system is that the images spliced ​​together by multiple projectors have obvious gaps, that is, all projectors need to be calibrated to reduce or eliminate the gaps. At present, the general solution is to use physical brackets to manually adjust the position and angle of the projectors so that multiple projectors can be correctly spliced ​​together. The problems with this type of device are: 1. The price of instruments such as physical brackets is too high; 2. The calibration work is very cumbersome; 3. The stability of the physical bracket is poor; 4. The flexibility of the projection wall is poor. Summary of the invention

[0005] The problem to be solved by a flat large-screen projector splicing device for parallel drawing image display is how to control the production cost of the projector splicing device and improve its correction convenience and stability.

[0006] A flat large-screen projector splicing device for parallel drawing image display includes a plurality of horizontal displacement rods, a plurality of vertical displacement rods, a plurality of cross displacement frames, a plurality of projector brackets and a plurality of projectors. The cross displacement frame is formed by two hollow rods fixedly assembled in a cross shape. The horizontal displacement rod and the vertical displacement rod respectively penetrate through the horizontal and vertical hollow rods of the cross displacement frame. The projector bracket is fixedly connected to the cross displacement frame, and the projector is placed in the projector bracket.

[0007] Preferably, the two hollow rods of the cross displacement frame are fixed by welding, and the length of the hollow rods is between 15-35 mm.

[0008] Preferably, the projector bracket is placed horizontally and is connected to the cross displacement bracket by welding or bolts.

[0009] Preferably, the projector is fixed in the projector bracket by bolts.

[0010] Preferably, the number of projector brackets is equal to the number of cross displacement brackets, and is equal to the product of the number of horizontal displacement rods and vertical displacement rods.

[0011] Preferably, the length of the horizontal displacement rod is 1.3-3 times that of the vertical displacement rod.

[0012] Preferably, the top ends of the vertical displacement rods are connected together via a suspension member.

[0013] Preferably, the vertical displacement rod located in the middle of the device has a plurality of jacks with equal spacing and is equipped with latches, and the number of the latches is equal to that of the horizontal displacement rod.

[0014] The overall structure of the device is simple, involving few parts, and all of them can be made of ordinary high-strength plastic, with low production cost. The placement displacement of the projector can be changed by moving the horizontal displacement rod and the vertical displacement rod, and the projection position of the projector can be changed. Since all projectors are located in the same plane and the projection axes are parallel to each other, the projections of the projectors can be spliced ​​into an integral flat large screen, and the calibration work is simple and effective. The horizontal displacement rod and the vertical displacement rod cross to form a whole, which ensures the stability of the calibration and the flexibility of the projection wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the overall structure of a flat large-screen projector splicing device for parallel drawing image display.

[0016] Figure 2 The present invention is a schematic diagram of the structure of a projector bracket and a projector part of a flat large-screen projector splicing device for parallel drawing image display.

[0017] Figure 3The present invention is a schematic diagram of the structure of the jack and latch parts of a flat large-screen projector splicing device used for parallel drawing image display.

[0018] In the figure: 1. horizontal displacement rod, 2. vertical displacement rod, 3. cross displacement frame, 4. projector bracket, 5. projector, 6. hanging part, 7. socket, 8. latch. DETAILED DESCRIPTION

[0019] like Figure 1 , 2 As shown, a flat large-screen projector splicing device for parallel drawing image display includes a plurality of horizontal displacement rods, a plurality of vertical displacement rods, a plurality of cross displacement frames, a plurality of projector brackets and a plurality of projectors. The cross displacement frame is formed by two hollow rods fixedly assembled in a cross shape. The horizontal displacement rod and the vertical displacement rod respectively pass through the horizontal and vertical hollow rods of the cross displacement frame. The projector bracket is fixedly connected to the cross displacement frame, and the projector is placed in the projector bracket.

[0020] The two hollow rods of the cross displacement frame are fixed by welding, and the length of the hollow rods is between 15-35mm. This is because the projector bracket and the projector have a certain weight. This assembly structure makes the cross displacement frame bear a large lateral force. The two hollow rods are fixed by welding to maintain the stability and reliability of the connection between the two hollow rods. The large length of the hollow rod ensures that the deformation of the vertical displacement rod is small under the condition of large lateral force.

[0021] The projector bracket is placed horizontally and connected to the cross displacement bracket by welding or bolts. The connection between the projector bracket and the cross displacement bracket is stable and reliable to avoid large deformation.

[0022] The projector is fixed in the projector bracket by bolts, which prevents the projector from shaking in the projector bracket when the projector bracket is moved.

[0023] The number of projector brackets is equal to the number of cross-displacement brackets, and is equal to the product of the number of horizontal displacement rods and vertical displacement rods. This is because there is a cross-displacement bracket at the intersection of the horizontal displacement rod and the vertical displacement rod, and each needs to be equipped with a projector.

[0024] The length of the horizontal displacement rod is 1.3-3 times that of the vertical displacement rod. The primary purpose is to limit the length of the vertical displacement rod. Two considerations are as follows: 1. Most projectors can adjust the projection position in the vertical direction, so the length of the vertical displacement rod can be shorter. The minimum value of 1.3 is based on the fact that the horizontal and vertical pixel ratios of general projectors are 4:3; 2. If the length of the vertical displacement rod is too long, it will block the viewer's line of sight. Secondly, most projectors do not have the function of adjusting the projection position in the horizontal direction, so the length of the horizontal displacement rod needs to be large enough so that the horizontal distance between two adjacent projectors and their corresponding projection center distances are basically equal. At the same time, a larger length of the horizontal displacement rod generally does not affect the viewing line of sight.

[0025] The top ends of the vertical displacement rods are connected together by a suspension member. The functions of the suspension member are: 1. Fixing the relative positions of the components of the device to stabilize the working position of the projector; 2. Suspending the entire device on the ceiling.

[0026] like Figure 3 As shown, the vertical displacement rod located in the middle of the device has a number of equally spaced holes and is equipped with latches, the number of which is equal to that of the horizontal displacement rods. The purpose is to fix the position of each vertical displacement rod to prevent it from sliding downward.

Claims

1. A flat large-screen projector splicing device for parallel drawing image display, characterized in that it includes a plurality of horizontal displacement rods, a plurality of vertical displacement rods, a plurality of cross displacement frames, a plurality of projector brackets and a plurality of projectors, wherein the cross displacement frame is formed by two hollow rods fixedly assembled in a cross shape, the horizontal displacement rod and the vertical displacement rod respectively pass through the horizontal and vertical hollow rods of the cross displacement frame, the projector bracket is fixedly connected to the cross displacement frame, the projector is placed in the projector bracket, and the placement position of the projector can be changed by moving the horizontal displacement rod and the vertical displacement rod, and the projection position of the projector can be changed, the number of projector brackets is equal to the number of cross displacement frames, and is equal to the product of the number of horizontal displacement rods and vertical displacement rods, and the length of the horizontal displacement rod is 1.3-3 times that of the vertical displacement rod.

2. According to the flat large-screen projector splicing device for parallel drawing and image display described in claim 1, it is characterized in that the two hollow rods of the cross displacement frame are fixed by welding, and the length of the hollow rods is between 15-35mm.

3. According to the flat large-screen projector splicing device for parallel drawing image display described in claim 1, it is characterized in that the projector bracket is placed horizontally and is fixedly connected to the cross displacement frame by welding or bolts.

4. The flat large-screen projector splicing device for parallel drawing image display according to claim 1, characterized in that the projector is fixed in the projector bracket by bolts.

5. The flat large-screen projector splicing device for parallel drawing and image display according to claim 1, characterized in that the top ends of the vertical displacement rods are connected together by a suspension member.

6. According to the flat large-screen projector splicing device for parallel drawing and image display described in claim 1, it is characterized in that the vertical displacement rod located in the middle of the device has a plurality of holes with equal spacing and is equipped with pins, and the number of the pins is equal to that of the horizontal displacement rod.

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