CN202434173U - Large screen rear projection high resolution advertising wall system structure - Google Patents

Abstract

A large screen rear projection high resolution advertisement wall system structure, includes: a box body, the side of which is a glass or acrylic resin plate; the rear projection film is attached to the glass or acrylic resin plate of the box body; a plurality of projectors installed inside the cabinet; a plurality of reflectors which are arranged inside the box body; the fixed brackets are arranged in the box body and respectively fix the projector and the reflector; a computer host installed inside the case; two image amplification dividers, which are respectively installed in the interior of the box body and above the computer host, and the above-mentioned projector picture is connected to the image output end of the computer host by means of image amplification divider; and the stereo equipment is arranged at the front end of the box body, and the sound source output of the computer host is connected to the stereo equipment. The utility model discloses except the fusion cost of many projectors of reduction that can be obvious, also make the stability that fuses the system promote by a wide margin, create the seamless fusion display wall of high-resolution, hi-lite.

Description

Large screen rear projection high resolution advertising wall system structure

technical field

The utility model relates to a large-screen rear projection high-resolution advertising wall system structure, in particular to a low-cost and highly flexible image fusion of multiple projectors, within a very short shooting distance and wall depth, It projects an image with brighter brightness, higher resolution and larger projection area than the original single projector on the rear projection screen, and it also has the general stereo sound playback function.

Background technique

At present, it is widely used in outdoor/indoor exhibition spaces, commercial exhibition venues, entertainment venues, conference centers or store windows, etc., large-screen display devices that need to display high-resolution audio-visual advertising content, nothing more than light-emitting diode (LED) displays screen, liquid crystal display (LCD) splicing screen and internal projection TV (DLP) splicing screen. These three mainstream display devices have their insurmountable shortcomings. For example, the resolution of the LED display is not Watch high-resolution video content at close range within 1-2 meters; LCD splicing screens and DLP splicing screens, because of the screen splicing of the hardware structure, no matter how small they are, there will be obvious physical splicing that can be easily detected by the naked eye. Seams, the physical seams that divide the screen and cause unpleasant viewing experience, thereby destroying the overall sense of the image.

Furthermore, in addition to the above three display devices, the projection display system is another option for large-screen display devices. After all, the movie projection that people are familiar with is the most common large-screen display, but the projection display system will produce Several problems to be overcome such as brightness, resolution, and projection distance limit the application of projection display systems in large-screen display devices. in:

1. Brightness: The cinema is a nearly completely dark environment, so the projected picture can be viewed clearly. Traditional projection must turn off the lights or limit the brightness of the ambient light to maintain the quality of the picture, so the projection display system needs to overcome The first problem is the impact of brightness and reducing ambient light pollution on picture quality. In a generally bright indoor environment or semi-outdoor spaces such as arcades, high-quality display pictures can be maintained, and the picture brightness must reach at least 800-1000cd/m2 .

2. Resolution: The projection display system must achieve a resolution similar to or higher than that of an LCD TV, and at least be able to directly play Blu-ray Disc 1080P movies. As the display screen increases, the resolution of the screen must also increase. The picture is blurred or even mosaic, and the resolution of more than 6 bars per centimeter is maintained in the horizontal X direction and vertical Y direction.

3. Projection distance: Compared with the mainstream LED display, LCD splicing screen and DLP splicing screen, the biggest disadvantage of the rear projection display system is the projection distance. Traditionally, the bigger the screen needs to be longer Otherwise, it is necessary to use reflectors to shorten the projection distance. If a large display system (visible screen above 120 inches) is to be easily accepted by users, the thickness of the entire projection box must be less than 80 cm. So as not to take up too much indoor space.

In the past, the digital projector device of internal projection TV used a single projector (optical machine) and mirror reflection principle to enlarge and project the image, and project a larger picture as much as possible in a certain space. However, in addition to reducing the projection brightness due to the specular reflection of the mirror, there is also a limit to the image magnification, and the brightness of the picture that can be projected by a single projector is also very limited. At the same time, the installation method, projection time, and location of the projector are also limited and cannot be adjusted flexibly. If the projector is to be upgraded to a high-brightness, high-resolution type, the cost will be too high.

Utility model content

The main technical problem to be solved by the utility model is to overcome the above-mentioned defects in the prior art and provide a large-screen rear projection high-resolution advertising wall system structure. The utility model can obviously reduce the fusion of multiple projectors. In addition to the cost, the stability of the fusion system has also been greatly improved, creating a high-resolution, high-brightness seamless fusion display wall.

The technical scheme that the utility model solves its technical problem adopts is:

A large-screen rear projection high-resolution advertising wall system structure is characterized in that it includes: a box body, the side of which is glass or acrylic resin plate; a rear projection film, attached to the glass or acrylic resin plate of the box body above; several projectors installed inside the box; several reflectors installed inside the box; several fixing brackets installed inside the box to respectively fix the projectors and reflectors; Inside the cabinet; two image amplification and splitters are respectively installed inside the cabinet and above the host computer, and the above-mentioned projector screen is connected to the image output end of the computer host through the image amplification splitter; a stereophonic device, Installed on the front of the cabinet, the audio output of the host computer is connected to the stereo equipment.

The aforementioned large-screen rear projection high-resolution advertising wall system structure, in which the projector is equipped with a short-focus lens.

The aforementioned large-screen rear projection high-resolution advertising wall system structure, wherein the host computer is a computer with dual DVI image output.

The aforementioned large-screen rear projection high-resolution advertising wall system structure, wherein the stereo equipment is a 20W dual-channel system.

The structure of the large-screen rear projection high-resolution advertising wall system of the utility model consists of more than two projectors, a box body equipped with a rear projection screen, several projector fixing brackets, and one image fusion and correction software. It consists of a personal computer and two image amplification splitters (MAKA BOX) connected to the video output of the personal computer. The rear projection screen is made of a transparent medium (glass, acrylic resin, PMMA, MS) attached to an optical It is composed of glass bead rear projection rear projection film; in this way, a part of the screen image projected by multiple single-shot projectors is projected on the projection screen of the box structure through the control of software and expansion divider, creating a High-resolution, high-brightness seamless fusion display wall.

The beneficial effect of the utility model is that, in addition to significantly reducing the fusion cost of multiple projectors, the utility model also greatly improves the stability of the fusion system and creates a high-resolution, high-brightness seamless fusion display wall.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a three-dimensional structure schematic diagram of the first embodiment of the large-screen rear projection high-resolution advertising wall of the present invention (four projectors are fused).

Fig. 2 is a three-dimensional structural schematic diagram of the second embodiment of the large-screen rear projection high-resolution advertising wall of the present invention (integration of eight projectors).

Explanation of symbols in the figure:

10 projectors 20 rear projection film

30 fixed bracket 40 cabinet

50 computer mainframe 60 image amplification divider

70 mirrors 80 stereo equipment

Detailed ways

Please refer to shown in Fig. 1, the first embodiment diagram of the large-screen rear projection high-resolution advertising wall system structure of the present invention, this embodiment is the structure that combines with four projectors, comprises: a box body 40, a back Structures such as projection film 20, four projectors 10, four fixed supports 30, four reflectors 70, one computer host 50, two image amplification dividers 60 and a set of stereophonic equipment 80.

A rear projection film 20 is attached to the glass or acrylic resin plate on the side of the casing (or shell) 40, and the rear projection film 20 can be 3M Vikuiti rear projection film or other rear projection films.

Four projectors (or optical machines) 10 are installed inside the casing 40, and the projector 10 is equipped with a short-focus lens, and its projection ratio is between 0.5-1.0; and four fixed brackets 30 and four reflectors 70 are also installed in the casing 40, the fixing bracket 40 can respectively fix the projector 10 and the reflector 70, and the reflector 70 can be an optical total reflection mirror coated on the surface.

A host computer 50 is installed inside the box body 40 and is a desktop computer with dual DVI image outputs. Two image amplification dividers (MAKA BOX) 60 are respectively installed above the computer host 50, and all projectors 10 screens are connected to the image output end of the computer host 50 through the image amplification divider 60, and the images are fused and corrected during use. The software is adjusted to achieve a perfect fusion effect, and then the fusion is projected on the optical rear projection film 20 .

A set of stereo equipment 80 is installed in casing 40 front ends, can be 20W two-channel system, and the sound source output of computer host 50 is connected to stereo equipment 80, provides basic sound effect for the utility model advertising wall.

Please refer to Fig. 2, the second embodiment diagram of the large-screen rear projection high-resolution advertising wall system structure of the present invention, this embodiment is a fusion structure of eight projectors, including: a box 40, a back Structures such as projection film 20, eight projectors 10, eight fixed supports 30, eight mirrors 70, one computer host 50, two image amplification dividers 60 and a set of stereophonic equipment 80.

Furthermore, with the host computer 50 and the image expansion and splitter 60 as the host, the software is used to adjust and correct the image, replacing the expensive precision machines required for image segmentation and fusion in the prior art, only using a very common computer host 50 and image expansion. By adding the splitter 60, the seamless fusion of images can be achieved, and the required hardware cost can be greatly reduced. This low-cost image fusion system can be used on cabinets of any shape and size.

In addition, the image enlarger and divider 60 used in the present invention is a small black box in appearance, and can connect two or three monitors to a notebook computer or a desktop computer. They can be connected to a DVI or DisplayPort output and are suitable for platforms that were previously limited to a single display, especially desktops and notebooks with built-in graphics cards. Traditionally, this kind of image amplification divider is used to increase the number of computer LCD screens, so that the images of one computer host 50 can be synchronously merged and displayed on two LCD screens, which increases the convenience of users. It belongs to a kind of A fairly common PC peripheral product.

Secondly, the image augmentation divider 60 of the utility model is a self-developed product, and some modifications have been made on the basis of the original technology, so that the image augmentation divider 60 is especially suitable for the fusion array of multiple projectors, which improves the image fusion Compatibility and stability of the software to the image augmentation segmenter 60. An image amplification divider 60 can allow an image input to be amplified and divided into three or four outputs, that is, a personal computer with dual digital image output terminals is connected to two image amplification dividers 60, and the maximum It can be connected to eight projectors 10, so that the images of these eight projectors 10 can be controlled through software, so as to achieve a whole large picture seamlessly integrated. Using image augmentation divider 60 or similar products plus image fusion and correction software, it is possible for an ordinary personal computer to control the fusion of eight projectors and 10 screens at the same time, while most hardware fusion machines on the market in the past can only be responsible for two For the integration of six projectors, if six or even eight projectors are to be integrated, in addition to expensive expenses, a lot of hardware equipment will be used, which will easily lead to system instability. The structure disclosed by the utility model can not only significantly reduce the fusion cost of multiple projectors, but also greatly improve the stability of the fusion system, making such a fusion system more commercially competitive.

The utility model fuses a plurality of small images to form a complete large image. It takes the image fusion and correction software system as the core, and performs front projection or rear projection on projection screens of various shapes according to the needs of use. The utility model discloses The system can connect eight projectors to one personal computer. If necessary, more computer hosts can be connected in series to connect more projectors for a larger projection area. This kind of super-high-resolution pixel projection screen is seamlessly integrated through the accumulation of projector resolution pixels, which is very suitable for image projection on irregular surfaces such as curved surfaces, spheres, and cylinders.

In the rear projection box 40, with this multi-projector picture fusion system disclosed by the utility model, the overall picture resolution and brightness are increased by the division of labor and cooperation of each projector 10; the projection distance is also solved If it is too short, the distance required for projection, that is, the thickness of the rear projection box 40 can be greatly reduced.

The device disclosed in the utility model only needs a general personal computer mainframe 50 with a price of about 20,000 yuan and two image outputs (DVI/VGA), and the two image outputs are respectively connected to an image amplification and splitter (MAKA BOX) 60, you can set the splicing combination of various projectors 10 according to your needs. 7, 1×8) or square array (2×2, 2×3, 2×4), and then connect the image output (DVI/VGA) of each image amplification divider 60 to a common XGA projection machine, and then use a set of picture fusion and geometric correction software to make geometric adjustments to the picture to be fused and adjust the brightness of the overlapping part of the picture, and then use the additional reflector to greatly shorten the projection distance required for projection. Only one computer mainframe 50 can achieve the seamless integration of the pictures of eight projectors 10, and a display picture of more than 120 inches can be projected at a projection distance within 70 centimeters.

This set of software of the utility model can combine the pictures of multiple projectors 10 into a complete image with ultra-high brightness, high resolution and large size in only about ten minutes of adjustment time. For example, the fusion of four 2×2 screens can produce a picture with a resolution of up to 2048×1536, and the fusion of six 3×2 screens can produce a picture with a resolution of up to 3072×1536. Also will increase along with the increase of fusion projector number, compared with the projector 10 price of a 20000 lumen HD image quality (1920 * 1080) will be up to more than one hundred thousand dollars, and the utility model device compares It only needs to use a relatively low cost to achieve similar picture quality and brightness.

If the utility model needs the fusion of more than eight projectors 10 pictures, the number of pictures to be fused can be increased by means of serial connection of computer mainframes 50. The first computer mainframe 50 first divides the picture into two image outputs, and each output The HD image capture card with a resolution of 1080p is input to two different secondary computer hosts 50, and each secondary computer host 50 uses the above-mentioned method to fuse the required projection images. Such a two-stage series connection can fuse up to 16 images at the same time. A projector with 10 screens. If the first host computer 50 has three image outputs, which are input to three different sub-computer hosts 50, the two-stage series connection can fuse 24 projectors 10. In this way, multiple projectors can be fused in series almost without limitation. Projector 10 screens, the only limitation is the original resolution of the original screen and the budget of the installation system.

The utility model can project top-quality images at the most economical cost, projected on the rear projection film 20 attached to the transparent material, and this transparent material and the rear projection film 20 can be Arbitrary curved surface shape, combined with the commonly used sound system. It can be widely used in outdoor/indoor exhibition spaces, business exhibition venues, entertainment venues, conference centers, or shop windows and other places that need to display high-resolution audio-visual advertising content.

Claims (4)

1. the one kind big high advertising wall system architecture of resolving of screen back projection is characterized in that, comprising:

One casing, its side are glass or acrylic resin board;

One back projection film is attached on the glass or acrylic resin board of casing;

Several projectors are installed in box house;

Several catoptrons are installed in box house;

Several fixed supports are installed in box house, and fix projector and catoptron respectively;

One host computer is installed in box house;

Two images amplification dispenser is installed in box house respectively, and is installed in the host computer top, and above-mentioned projector picture is connected to the image output terminal of host computer through image amplification dispenser;

One stereophony equipment is installed in the casing front end, and stereophony equipment is received in the source of sound output of host computer.

2. the high advertising wall system architecture of resolving of big screen back projection according to claim 1 is characterized in that said projector is equipped with the short-focus mirror head.

3. the high advertising wall system architecture of resolving of big screen back projection according to claim 1 is characterized in that said host computer is the computer with two DVI image outputs.

4. the high advertising wall system architecture of resolving of big screen back projection according to claim 1 is characterized in that said stereophony equipment is 20W two-channel system.

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