JPH05328272A - Multi-projection unit - Google Patents

Abstract

PURPOSE:To reduce an arrangement space remarkably by decreasing the depth and to facilitate the transportation and the rearrangement. CONSTITUTION:A reflecting mirror 3, a cathode ray tube 4 and a projection lens 5 are incorporated in a box 1 and projection unit 7 with a screen 2 provided thereto is combined in the upper/lower and left/right sides. Taking the projection units 71, 72 in the upper lower position relation as an example, a display picture of a cathode ray tube 4. of the projection unit 71 placed at the lower side is magnified by a projection lens 51 and reflected in a reflection mirror 32 at a right angle in the projection unit 72 at the lower side and displayed on a screen 22 with magnification. The distance between a pattern displayed on a cathode ray tube and the screen 2 is selected larger to decrease the depth considerably and the disassembly/assembly of the projection unit 7 becomes possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-projection unit in which a large number of projection units are vertically and horizontally incorporated and connected.

[0002]

2. Description of the Related Art As a conventional multi-projection unit, a screen having a Fresnel lens is arranged in one box, and a plurality of projection units corresponding to the Fresnel lens are screened at the rear of the box. -The one arranged in a state of being largely separated from the screen, or the screen having the Fresnel lens divided into a plurality is arranged on the front surface of one box body, and in the optical path between the rear surface and each projection unit. There was one with a reflector.

[0003]

By the way, in the former multi-projection unit, since the reflecting mirror is not arranged in one box, the optical path becomes long,
The size of the box, especially the depth, has become large and a wide installation space has been required.

On the other hand, in the latter multi-projection unit described above, since the reflecting mirror is provided, the depth dimension of the box body does not become particularly large, but
Since multiple sets of projection units including cathode ray tubes and the same number of screens are built in one box, the weight becomes very large. The screen and the screen are removed, and the box is disassembled for transfer. Further, also in the assembling after the transfer, the assembling of the box body and the attaching work of the projection unit and the screen are required, which is very troublesome work.
In addition, they are not compatible and cannot be mass-produced.
There were also problems such as high costs.

An object of the present invention is to provide a multi-projection unit which solves such a problem, avoids troublesome work such as transfer, reduces the installation space, and is inexpensive.

[0006]

In order to achieve the above-mentioned object, the present invention provides a plurality of projection units each having a projection unit for displaying an image, a reflecting mirror and a screen in a box body. Assembled vertically and horizontally and connected,
An image projected by a projection unit built in the projection unit is reflected by a reflecting mirror built in another projection unit adjacent to the projection unit, and projected on a screen of the other projection unit. .

[0007]

For example, the light of the image from the projection unit in the projection unit located on the lower side enters the projection unit located on the upper side of the same structure as this, is reflected by the reflecting mirror, and is projected on the screen. With this configuration, the distance between the projection unit and the screen on which the projected image is projected can be made sufficiently large, and the image can be displayed in a sufficiently large scale. In addition, the depth of the projection unit box can be made smaller, the installation space can be made smaller than that of conventional multi-projection TVs, and even if the projector unit is disassembled, the disassembled product is sufficiently small and disassembly and assembly are easy. It is also convenient for transportation.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. First, a specific example of a projection unit which is an assembly unit of the multi-projection unit according to the present invention will be described with reference to FIG. However, 1 is a box, 2 is a screen, 3 is a reflecting mirror, 4 is a cathode ray tube, 5 is a projection lens, and 6a and 6b are openings.

In FIG. 2, a transmissive screen 2 having one Fresnel lens is arranged in the entire opening of the box body 1, and a reflecting surface is opposed to the screen 2 and is approximately 45 °.
One reflecting mirror 3 is provided with an inclination of. Further, one cathode ray tube 4 which is a projection tube and a projection lens 5 which magnifies the projected image are installed on the opposite side of the reflecting mirror 3 from the screen 2. Where screen 2
Is in the horizontal direction with respect to the reflecting mirror 3, and the image projection surface of the cathode ray tube 4 faces upward with respect to the reflecting mirror 3 and orthogonal to the direction of the screen 2.

An opening 6a through which at least all the light of the image projected by the cathode ray tube 4 and enlarged by the projection lens 5 passes is provided in the upper portion of the box body 1 facing the projection lens 5. An opening 6b of the same size is also provided in the lower part of the box body 1 at a position facing the opening 6a. As will be described later, these openings 6a and 6b are necessary when a plurality of projection units having such a configuration are combined to form a multi-projection unit according to the present invention.

FIG. 1 is a sectional view showing an embodiment of a multi-projection unit according to the present invention. In this embodiment, a plurality of projection units described in FIG. 2 are incorporated in the vertical and horizontal directions. Here, it is assumed that four projection units are incorporated in the vertical direction, and FIG. Figure 3 shows a cross section of a row of projection units incorporated in a direction. However, in FIG. 1, 7 ₁ , 7 ₂ , 7 ₃ , and 7 ₄ are projection units having the configuration described in FIG. 2, and the parts corresponding to FIG. 2 are shown with the same reference numerals and suffixes, Suffixes indicate that they are components of different projection units.

In FIG. 1, four projection units 7 ₁ , 7 ₂ , 7 ₃ , 7 ₄ having the structure described with reference to FIG. 2 are sequentially stacked and connected, and between the two projection units that move up and down, The above-mentioned opening 6a provided in the upper part of the box 1 of the lower projection unit and the above-mentioned opening 6b provided in the upper part of the box 1 of the upper projection unit are combined.

Therefore, when the multi-projection unit operates, looking at the _two projection units 7 ₁ and 7 ₂ that move up and down, the image projected on the fluorescent screen of the cathode ray tube 4 ₁ of the projection unit 7 ₁ is as follows. is enlarged by the projection lens 5 ₁ enters the projection unit 7 ₂ on the upper side via the upper opening of the box body 1 _1, it is reflected at a right angle at the reflection mirror 3 ₂ subscription - projected down 3 ₂ Is displayed.

[0014] In this case, the reflecting mirror 3 ₂ at the projection unit 7 ₂ positioned on the upper side, the box body 1 ₁ of the upper portion of the opening in the projection unit ₇₁ positioned on the lower side (the opening 6a in FIG. 2 2) and the projection lens 5 ₁ that has passed through the upper opening (corresponding to the opening 6b in FIG. 2) of the box 1 ₁ in the projection unit 7 ₂ located on the upper side.
Is positioned so that all the light from is reflected, and the screen 2 ₂ is set to a size and position for displaying the entire image reflected by the reflecting mirror 3 ₂ .

Similarly, the projection unit 7
₂ CRT 4 ₂ Utsude image to the projection unit 7 ₃ of the screen 2 ₃ thereon, a cathode-ray tube 4 ₃ Utsude image projection unit 7 ₃ expand respectively the screen 2 ₄ projection unit 7 ₄ thereon Is displayed.

Therefore, by combining a plurality of projection units vertically and horizontally as described above,
The screens of these projection units are integrated to form a large screen of one multi-projection unit. Then, by displaying individual partial images of one image on the screen of these projection units, one large image is displayed on the screen of the multi-projection unit, and by switching operation by a device (not shown) or the like, respectively. For each screen of the projection unit of, that is, the screen of the multi-projection unit
It is also possible to display different images for each of the divided areas.

In the above embodiment, the image projected on the projection unit of the lower projection unit is enlarged and displayed on the screen of the upper projection unit, but the present invention is not limited to this. The projected image of the unit may be enlarged and displayed on the screen of the lower, right or left projection unit.

[0018]

As described above, according to the present invention,
A projection unit including a projection unit, a reflecting mirror, and a screen is combined vertically and horizontally, and a projected image of the projection unit of the projection unit is reflected by a reflecting mirror of another projection unit arranged next to the projection unit. Since it is displayed on the screen of each projection unit, the distance between the projection unit and the screen on which the image is displayed can be increased to display a sufficiently enlarged image, while the depth of each projection unit is increased. The size, and therefore the depth of the entire device, can be greatly reduced, the space for installation can be made sufficiently small, the entire device can be easily disassembled in units of projection units, and the combination of such projection units can also be easily done. Transportation or moving relocation also becomes very easy. In particular, it is possible to make the projection unit large enough to easily pass through the entrance door of the room, which greatly enhances the merchantability of the present invention.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a multi-projection unit according to the present invention.

FIG. 2 is a vertical cross-sectional view showing a specific example of a projection unit which is a structural unit of the embodiment shown in FIG.

[Explanation of symbols]

1,1 _1, 1 _2, 1 _3, 1 ₄ box 2,2 _{1, 2} 2, 2 _3, 2 ₄ Subscription - down 3,3 _1, 3 _{2, 3} 3, 3 ₄ reflector 4,4 ₁ , 4 ₂ , 4 ₃ , 4 ₄ Braun tube 5, 5 ₁ , 5 ₂ , 5 ₃ , 5 ₄ Projection lens 6a, 6b Opening 7, 7 ₁ , 7 ₂ , 7 ₃ , 7 ₄ Projection unit

Claims (1)

[Claims] 1. A multi-projection unit comprising a projection unit having a structure for reflecting a projected image of a projection unit by a reflecting mirror and projecting the projected image on a screen in a vertically and horizontally assembled manner and connected to the projection unit. A multi-projection unit, characterized in that an image projected by the projection unit is reflected by a reflecting mirror incorporated in another projection unit adjacent to the projection unit and projected on a screen of the other projection unit.