JP2583333Y2 - Projector device for multiple media - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an application of a projector, and more particularly, to a projector apparatus for a plurality of media, in which a CRT projector including R, G, and B CRTs and a slide projector such as a 35 mm film are shared.

[0002]

2. Description of the Related Art In recent years, projectors having a screen size of 100 inches or more have been required in high-vision museums and the like. In constructing this projector, it is necessary to share not only a CRT projector but also a film media projector in consideration of utilization of educational assets and the like. As a specific configuration, a two-stage projector is hit with a mirror, and switching to the slide projector of 35 mm film or the like is performed by moving the mirror.

FIG. 4 shows a conceptual diagram of a conventional projector for a plurality of media. The light is projected from a six-tube projector 401 to a transmission screen 403 via a mirror 402. A slide projector 404 such as a 35 mm film is disposed behind the mirror 402. When the slide projector 404 such as a 35 mm film is used, the mirror 402 is moved.

[0004]

The mirror 402 used in the above-mentioned conventional projector is generally 1 m × 2
The size was 50 kg or more in m size, and it was difficult to perform accurate positioning when moving. In addition, it took man-hours to deal with regular maintenance. It is indispensable and difficult to provide a high mechanical accuracy and to provide a special mechanical system and a feedback system for those involving movement. In addition, 55-11
No. 5171 “Projection television receiver” discloses a projector combining a CRT display device and a film display device. However, since the slide film display device is disposed on the magnetic deflection yoke of the CRT, the magnetic field generated from the cooling fan motor of the film display device may cause electromagnetic interference to the CRT display device, and the cooling device may be used. When an image is projected from the CRT display device to the screen while the fan motor is driven, the CRT
The deviation in deflection causes misconvergence, and there is a problem in that color deviation is likely to occur in an image on a screen. Also, if the above-mentioned three-tube type CRT display device is vertically
When a 6-tube projector is constructed by stacking the layers and a film display device is incorporated in the 6-tube projector, C
When the image of the slide film is superimposed and displayed on the projected image of the RT, the problem of color misregistration due to misconvergence is further exacerbated.
Japanese Patent Application Laid-Open No. 1-112547 discloses a CRT display device in which a magnetic shield cover for magnetically shielding a CRT is protruded from a panel glass surface of the CRT, and its tip is bent outward by a predetermined dimension. An apparatus is disclosed. However, the magnetic shield cover is not versatile, and the external magnetic field applied to the deflection yoke of the CRT wraps around from the panel glass surface to reach the deflection yoke.
The fact that even a CRT covered with a shield cover cannot eliminate color misregistration has already been confirmed in various laboratory experiments. Therefore, even if a film display is combined with a three-tube projector covered with a shield cover, it is clear that color shift occurs due to electromagnetic interference with the deflection yoke in a simple structure in which a CRT display and a film display are stacked. Met.

It is therefore an object of the present invention to provide a multi-media compatible projector which shares a slide projector of 35 mm film or the like and a multi-stage CRT projector.

[0006]

SUMMARY OF THE INVENTION Accordingly, in order to achieve the above-mentioned object, the present invention is directed to a pair of vertically arranged ones stacked with a predetermined gap therebetween to project an image toward the same screen. A three-tube projector and the pair of 3
The three-tube projector is disposed in the gap of the
Vertical or horizontal direction to the image projection direction of the ejector
A mirror tilted by is disposed in the pair of three-tube Pro
Separated by a distance that does not cause electromagnetic interference to the ejector.
A film slide projector or an overhead projector, which is disposed diagonally forward or laterally , reflects a projected image by the mirror and projects the projected image on the screen.

[0007]

According to the present invention, a 35 mm fill is provided by the above-described structure.
Generated from the cooling fan of the slide projector, etc.
The influence of the rotating magnetic field on the CRT projector
CRT projector and slide projector such as 35mm film
Shared with projector or overhead projector
Therefore, the large flat mirror does not need to be moved.
Therefore, maintenance is easy, and there is little deterioration in image quality.
Become.

[0008] Further , the mirror is mainly located at the center of the screen.
Tilt a given angle vertically or horizontally on the optical axis
The distance from the screen
By using refraction, a substantial projection distance can be secured.
Wear.

Furthermore, the above-mentioned film slide pro
Ejector or overhead projector
A predetermined distance away from the three-tube projector
Or placed sideways, so it is easy to generate electromagnetic interference
35 mm film slide with cooling fan
It is a safe distance that the electromagnetic wave does not affect the projector
The projector can be placed away from the three-tube projector.
And the linear distance from the screen is not very necessary
Therefore, designing the entire projection system compactly
Can be.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic view of the present invention, and FIG. 2 is a perspective view. An image projected from a six-tube projector 104 in which first and second projectors 104a and 104b each including R, G, and B tubes are stacked with a gap therebetween is a mirror 1
The light is reflected at 03 and projected on the screen 105. The projector 104 of the six-tube projector 104 in the upper and lower two stages
The mirror 102 is arranged between the a and 104b in a plane / upright manner. A screen projected from a slide projector or overhead projector (hereinafter, referred to as a slide projector) 101 such as a 35 mm film is deflected by 90 degrees by a mirror 102 arranged in a gap between the six tube projectors 104, reflected by a large flat mirror 103, and reflected by a screen 105. Is projected to The slide projector 101 is arranged at a place away from the six-tube projector 104 so as not to affect the six-tube projector 104 with a magnetic field generated by the built-in cooling fan.

FIG. 3 shows another embodiment. In the gap on the projection side of the upper and lower two-stage six-tube projector 104, for example, 500 ×
A mirror 301 having a size of 300 mm is arranged, and the slide projector 101 is arranged diagonally forward of the six-tube projector 104 to reduce the influence of a magnetic field.

[0012]

As described above, according to the present invention, a mirror is disposed in the middle gap between a pair of three-tube projectors stacked one above the other, and a distance that does not cause electromagnetic interference to the three-tube projector. The projection image of a film slide projector or overhead projector placed at a position separated only by a mirror is reflected by a mirror and projected on the screen. Therefore, a slide projector such as a 35 mm film having a cooling fan that easily generates interference electromagnetic waves. Is disposed electromagnetically isolated from a pair of three-tube mirrors, thereby eliminating the inconvenience that the CRT of a three-tube projector is affected by an external magnetic field and causes misconvergence. A three-tube projector that is susceptible to electromagnetic interference from installed electromagnetic Fused to the de-projector or overhead projector, it is possible to provide a useful audio-visual equipment to education and presentations, etc., and the actual
Is in the image projection direction of the three-tube projector.
Is it arranged at a predetermined angle vertically or horizontally?
Film that projects the projected image reflected on the mirror
Ride projector or overhead projector
The horizontal or up and down instead of behind the three tube projector
It can be placed around the direction
Effective projection distance using refraction instead of linear distance
Can be secured, and the film
Ride projector or overhead projector
Is a predetermined distance from the pair of three-tube projectors.
Since it is arranged diagonally forward or laterally,
35mm film with cooling fan
Disturbing electromagnetic waves do not affect the slide projector
Installed at a safe distance from the three-tube projector
And the straight line distance from the screen is
Since the projection system is not necessary,
It has excellent effects such as measurement .

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view according to FIG. 1;

FIG. 3 is a perspective view showing another embodiment of the present invention.

FIG. 4 is a conceptual diagram showing a conventional example.

[Explanation of symbols]

 101,404 slide projector 102,103.301,402 mirror 104,401 6-tube projector 104a first projector 104b second projector 105.403 screen

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of three-tube projectors which are vertically stacked with a predetermined gap therebetween and project an enlarged image toward the same screen, and are arranged in the gap between the pair of three-tube projectors. The three-tube projector
Tilted vertically or horizontally to the image projection direction
Was a mirror which is arranged, the pair of three-tube projector
Diagonally forward with a distance that does not cause electromagnetic interference
Alternatively, a projector apparatus for multiple media, comprising: a film slide projector or an overhead projector that is arranged in a horizontal direction and reflects a projection image on the mirror and projects the projection image on the screen.