JPH0555673U - Multi-screen device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is to reduce the depth of a multi-screen in a multi-screen device which is formed by arranging projector units vertically and horizontally. [Structure] The projector unit is provided with a reflecting means, and the length in the front-rear direction can be shortened by reflecting and bending the image light obtained from the cathode-ray tube. Can be shortened.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a multi-screen device, and more particularly to a device having a reduced depth.

[0002]

[Prior Art]

 As a conventional multi-screen device 1, as shown in FIG. 6, a plurality of projector units 2 each having a rectangular parallelepiped shape are arranged so as to be stacked in a predetermined number (for example, three) in the vertical and horizontal directions when viewed from the front. Has proposed that the screen screen 3 is formed by 3 × 3 unit screens 2A of each projector unit 2.

As shown in FIG. 7, each projector unit 2 has a cathode ray tube (CRT) 5 disposed at a rear position on an optical axis L1 which penetrates a rectangular parallelepiped case 4 in a front-rear direction, and a CR T5. The image light L2 obtained from the image displayed on the display screen 5A is projected through the projection lens 6 onto the unit screen screen 2A provided on the front surface of the case 4 so as to be orthogonal to the optical axis L1.

Thus, on the screen screen 3 of the multi-screen apparatus 1, the image projected on the display screen 5A of the CRT 5 in each projector unit 2 is enlarged and arranged in a matrix of three rows and three columns. One image is displayed.

[0005]

[Problems to be solved by the device]

 However, in the conventional configuration shown in FIGS. 6 and 7, by selecting the case 4 of each projector unit 2 to have a rectangular parallelepiped shape, a plurality of projector units 2 can be stacked in a predetermined number in the vertical and horizontal directions. On the other hand, the optical axis L1 for projecting the image light L2 obtained from the CRT 5 onto the unit screen 2A through the projection lens 6 is formed so as to penetrate the case 4 in the front-rear direction. There is a problem that the length H1 in the front-rear direction of 2 becomes long and, accordingly, the depth of the multiscreen device 1 becomes long.

Incidentally, the length H1 of the projector unit 2 in the front-rear direction is actually determined based on the focal length of the projection lens 6 and the front-rear length on the outer shape of the CRT 5. Therefore, there is a limit when the depth of the multi-screen device 1 is shortened to make it thin. The present invention has been made in consideration of the above points, and is intended to propose a multi-screen device capable of making the depth as short as possible.

[0007]

[Means for Solving the Problems]

 In order to solve such a problem, in the present invention, a predetermined number of projector units 12 for projecting the image light L12 formed by the image light forming means 15 onto the screen 12A are arranged in a vertical and horizontal direction. By doing so, in the multi-screen device 1 for forming the screen screen 13, the projector unit 12 is provided between the image light forming means 15 and the screen 12A, and the reflecting means 7 for bending the image light L12 is provided.

[0008]

[Action]

 By bending the image light L12 obtained from the image light forming means 15 by the reflecting means 7, the length in the front-back direction of the projector unit can be shortened, and as a result, a multi-screen having a shorter depth than the conventional one can be realized. You can

[0009]

【Example】

 An embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 11 denotes a multi-screen device as a whole, and by arranging 3 × 3 project unit units 12 so as to be vertically and horizontally stacked, a unit screen 12 A is used to display a screen image. 13 is formed.

As shown in FIG. 2, each projector unit 12 has a CRT 15 as image light forming means, and image light L12 obtained from the image displayed on the display screen 15A thereof is aligned with the optical axis L11. After passing along the projection lens 16 along it, it is bent by the reflection mirror 7 and projected on the unit screen 12A.

In the case of this embodiment, the CRT 15 is arranged at the lower rear position of the case 14 so that the optical axis L 11 goes vertically upward so as to emit the image light L 12 upward, and the CRT 15 has a projection lens 16 Is disposed at the focal position of the CRT 15 so as to project the image light L12 obtained from the CRT 15, and the reflection mirror 7 horizontally moves the optical axis L11 forward so as to bend the image light L12 incident from the CRT 15 forward. The reflecting surface is disposed at an upper rear position of the case 14 so as to face toward the front, with the reflecting surface facing forward and downward by about 45 °.

Here, the left and right side surfaces 17L and 17R (FIG. 1) of the case 14 of each projector unit 12 are arranged in a vertical direction so that a plurality of projector units 12 can be arranged in close contact with each other in the left-right direction. It is formed to extend.

On the other hand, the upper and lower side surfaces 17U and 17D of the case 14 of each projector unit 12 extend rearward in parallel with each other in the horizontal direction from the upper and lower edges of the unit screen 12A. The horizontal plane portions 17U1 and 17D1 are provided, and the horizontal plane portions 17U1 and 17D1 are followed by inclined plane portions 17U2 and 17D2 which extend obliquely downward and rearward substantially parallel to each other and reach the rear side surface 17B.

Thus, the CRT 15 is housed in the protruding space portion 18 formed so as to protrude downward by the inclined surface 17D2 of the lower side surface 17D and the rear side surface portion 17B, and the inclined surface portion 17U2 of the upper side surface 17U is accommodated. The reflection mirror 7 is housed in the space formed so as to be recessed downward.

In the above structure, the 3 × 3 projector unit 12 is stacked in three steps in the lateral direction so that the left and right side surfaces 17L and 17R closely contact each other, and the upper and lower side surfaces 17U and 17R 17D are vertically stacked in three stages so as to be in close contact with each other and placed on a base 20 (FIG. 1), and thus a unit screen 12A of 3 × 3 projector units 12 is used to provide a multi-screen device. The screen screen 13 of 11 is formed.

According to the above configuration, in the projector unit 12, the CRT 15 is arranged so that the optical axis L11 is directed vertically upward, and the image light L12 obtained from the CRT 15 is reflected by the reflection mirror 7 to be projected. By making the back of the ejector unit fold downward, the depth can be shortened by the amount of folding, and the length H2 in the front-rear direction is shorter than the length H1 in the front-rear direction of the conventional project unit. It is possible to realize the project unit 12 having

Therefore, a multi-screen device 11 having a shorter depth than the conventional one is realized by arranging three projector units 12 each having a shorter length in the front-back direction than the conventional one so as to be stacked vertically and horizontally three by three. can do.

Since the length of the project unit in the front-rear direction can be shortened, the weight of the case 14 is reduced accordingly, and as a result, the weight of the project unit is further reduced. You can

In the case of the above-described embodiment, as shown by the alternate long and short dash line in FIG. 2, the back lid 8 of the projector unit 12 is provided in the vicinity of the lens portion so as to be opened and closed as indicated by the arrow a, so that the CRT 15 and the projection can be projected. The constituent parts of the lens 16 can be seen at a glance, and maintenance may be easily performed.

Further, in the above-mentioned embodiment, the case where the rear part of the projector unit is folded downward is described, but the present invention is not limited to this, and as shown in FIG. 3, contrary to the above-mentioned embodiment, The CRT 15 is arranged so that the optical axis L11 is directed vertically downward in the direction of the projector unit, and the image light L12 obtained from the CRT 15 is bent forward by the reflecting mirror 7, thus making it more forward and backward than the conventional projector unit. Even if the length is shortened, the same effect as the above case can be obtained.

Further, as shown in FIG. 4, the CRT 15 is arranged so that the optical axis L11 is bent to the right in the horizontal direction (or to the left in the horizontal direction) in the rear portion of the projector unit 12 in FIG. Even if provided, the same effect as described above with reference to FIG. 1 can be obtained.

Further, instead of providing the inclined surface portions 17U2 and 17D2 as described above with reference to FIG. 2, by providing step portions 17U3 and 17D3 following the horizontal surface portions 17U1 and 17D1 as shown in FIG. You may be able to stack in the direction.

Further, in the above-mentioned embodiment, the case where the CRT is used as the image light forming means has been described, but the present invention is not limited to this, and other image light forming means may be used.

[0025]

[Effect of the device]

 As described above, according to the present invention, in a multi-screen device in which a predetermined number of projector units are stacked in the vertical and horizontal directions to form an image light obtained from a cathode ray tube disposed behind the projector unit. Since the image light is bent by providing a reflection means for reflecting the light, the length of the projector unit in the front-rear direction can be shortened, and thus the depth of the entire multi-screen device can be further shortened. ..

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a multi-screen device according to the present invention.

FIG. 2 is a cross-sectional view showing a detailed structure of the projector unit shown in FIG.

FIG. 3 is a sectional view showing a projector unit according to another embodiment of the present invention.

FIG. 4 is a perspective view showing a multi-screen device according to another embodiment of the present invention.

FIG. 5 is a sectional view showing a projector unit according to another embodiment of the present invention.

FIG. 6 is a perspective view showing a conventional multi-screen device.

7 is a sectional view showing the projector unit of FIG.

[Explanation of symbols]

1, 11, 31 ... Multi-screen device, 2, 12,
22, 42 ... Projector unit, 2A, 12A ...
... Unit screen, 3,13 ... Screen screen,
4, 14 ... Case.

Claims (1)

[Scope of utility model registration request] 1. A multi-screen for forming a screen screen by arranging a predetermined number of projector units for projecting the image light formed by the image light forming means on the screen in a vertical and horizontal direction. In the apparatus, the projector unit comprises a reflection means provided between the image light forming means and the screen to bend the image light.