JP2001133879A - Projecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projecting device realizing space saving and easily adjusted in installation by selectively switching and using a projector and a digital video projector with respect to one light source device. SOLUTION: A projector 2 and a digital video projector 3 are placed in parallel on the table base plate 41 of a moving table 4A capable of travelling on a rail 5 installed in a direction perpendicular to the optical axis of the light source device 1. In the case of using the projector 2, the table 4A is moved in a rightward direction in the figure and stopped and fixed at a position where the optical axis of the projector 2 is aligned with the optical axis of the device 1. In the case of using the projector 3, the table 4A is moved in a leftward direction in the figure and stopped and fixed at a position where the optical axis of the projector 3 is aligned with the optical axis of the device 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector which can be used by switching between a projector and a digital video projector arbitrarily. In particular, a projector and a digital video projector used in a large image viewing facility such as a movie theater are the same. The present invention relates to a projection device that can be switched and used for the light source device.

[0002]

2. Description of the Related Art Recently, digital video projectors that catch a video signal transmitted by satellite broadcasting, reproduce a video signal, and project the video signal on a screen have begun to spread rapidly. Accordingly, there has been a trend in permanent movie theaters in which it is necessary to perform both a performance using a projector using a conventional movie film and a performance using a digital video projector at any time. 2. Description of the Related Art At present, projectors used in movie theaters and the like are configured as devices independent of a projector that uses a movie film and a digital video projector that reproduces and broadcasts a video signal.

[0003]

However, in a large-sized projector, a light source device including a power supply device has a large capacity and a large weight. Therefore, in a narrow projection room of a movie theater, a film projector and a video signal are reproduced. There is no space for installing both the digital video projector and the inconvenience of alternately loading and using both. In addition, for that purpose, there is a trouble that the positioning and the adjustment have to be performed every time one of the projection devices is installed.
SUMMARY OF THE INVENTION An object of the present invention is to provide a projection apparatus which can easily switch between a projector and a digital video projector, has a small space, and does not require complicated adjustment.

[0004]

SUMMARY OF THE INVENTION The present invention achieves the object of saving space and power by making it possible to switch between a projector and a digital video projector for a common power supply device.

That is, a projection device according to the present invention is a light source device configured so that a light source unit for a projector and a light source unit for a digital video projector can be selectively attached;
A moving table including a projector body using an external light source and a digital video projector main body using an external light source arranged in parallel, and a moving table provided with moving means for moving the main body relative to the power supply device; A guide mechanism for guiding the projector in a direction perpendicular to the optical axis of the light source device; and a position where the optical axis of the projector matches the optical axis of the light source device, or the optical axis of the light source device. Positioning and fixing means for selectively positioning and fixing the moving table at positions where the optical axes of the video projector coincide with each other are provided.

The projector is, for example, a 35 mm projector, and is a large projector mainly used in movie theaters and the like. A digital video projector using an external light source is, for example, a digital light processing method (DLP method) developed by Texas Instruments, which uses a micromirror to convert a video signal transmitted by satellite broadcasting into a micromirror. A video projector that reproduces a video signal and projects it on a screen.

The light source device uses a high-pressure xenon lamp or a mercury lamp, and includes a power supply device and a light source unit including a lamp, a reflecting mirror, and the like. As a light source unit, a normal single mirror light source unit is used for a 35 mm projector, and a double mirror light source unit is usually used for a video projector.

[0008] In the case of a large projection device, the moving table has a tray type and has wheels on four legs.
It runs on rails. Each of the four legs is provided with a length adjusting screw so that the depression angle of the projector or video projector can be adjusted. In the case of a small projection device, it is mounted on a shelf attached to the light source device with a sliding table. On the moving table, the projector and the video projector are arranged in parallel, that is, the positions of both eyepieces that are parallel to the optical axis of the light source device and that receive the light beam emitted from the light source device are aligned with respect to the optical axis. It is placed and fixed so that it lies in a vertical plane.

The guide mechanism includes a combination of a linear rail installed at right angles to the optical axis of the light source device and wheels running on the rail, and a linear rail installed at right angles to the optical axis of the light source device. A combination of a guide ridge and a guide groove for sliding can be used.

[0010]

1 and 2 show an overall view of a projection apparatus according to the present invention. FIG. 1 is a side view thereof, and FIG. 2 is a front view thereof. In the figure, 1 is a light source device, 2 is 3
5 mm projector, 3 is a digital video projector (DLP Cinema (registered trademark) manufactured by Texas Instruments), 4A is a moving table, and 5 is a rail as a guide mechanism.

The light source device 1 includes a lamp housing 11 containing a light source unit and a power supply housing 12 containing a power supply device. As shown in FIG. 5, the lamp housing 11 has four fixing screws 13 protruding therein for mounting the light source unit. In addition, 12 is an exhaust hole, and 14 is a nut screwed to the fixing screw 13.

The light source unit is a light source unit 1 for a projector.
5A (FIG. 6) and a light source unit 15B (FIG. 7) for a digital video projector.
It is exchanged for each purpose. The light source unit 15A used for the projector uses a single type mirror 16A as a reflecting mirror of the light source. In the light source unit 15B for the digital video projector, a double type mirror 16B is used as a reflection mirror of the light source. Reference numeral 17 denotes a base, reference numeral 18 denotes a through hole for insertion into a fixing screw 13 provided in the lamp housing 11, and reference numeral 19 denotes a handle for carrying the light source unit.

The projector 2 is equipped with a lens system 21, a film driving mechanism 22, a sound head 23, a rerouting 24 and the like. Below it, four mounting plates 45 for mounting on the moving table are mounted. The digital video projector 3 includes a lens system 31, a main body 32 containing an image reproducing device, and the like. Further, four mounting plates 46 for mounting on the moving table are mounted below the moving table. The moving table 4A includes a table board 41, wheels 4
3 are provided with four legs 42 and the like. Each leg 42 is provided with a length adjusting screw 44 so that the length of the leg 42 can be expanded or contracted to adjust the depression angle of the projector or video projector.

As shown in FIG. 4, the moving table 4A
Are provided with mounting holes 61 for mounting to the mounting plate 45 of the projector 2 with bolts, and mounting holes 62 for mounting to the mounting plate 46 of the digital video projector 3 with bolts. A side plate 63 is provided on a side surface facing the light source device 1.
Provided therein are six fixing screws 65A, 6 for positioning the moving table 4A and fixing the moving table.
5B, 65C, 65D, 65E, 65F and one lateral guide hole 64 are provided.

On the side wall of the light source device 1 facing the side plate 63, screw holes 67A, 67B, 67C, 67D for receiving four fixing screws out of the six fixing screws, and the number of screws loosely inserted into the guide holes 64. Book guide projections 66A, 66B, 66
C is provided. Reference numeral 26 denotes a hood for light beams emitted from the light source unit.

Since the rail 5 is provided at right angles to the optical axis of the light beam emitted from the light source device 1, the projector 2 or the digital video projector 3 mounted on the moving table 4A can be selectively used as a light source. The light can be guided to a position that coincides with the optical axis of the light beam emitted from the device 1.

(Operation method) In the projection device of the present invention,
When the 35 mm projector 2 is used, the light source unit of the light source device 1 is replaced with a projector unit 15A (FIG. 6). Then, as shown in FIG. 3 (showing a state in which the lamp housing 11 is removed), the moving table 4A is moved rightward in the drawing. The moving table 4A has its wheels 43 rotated on the rails 5 and moves in a direction perpendicular to the optical axis of the light beam emitted from the light source device 1.

As shown in FIG. 4, the leftmost end of the guide hole 64 contacts the leftmost guide protrusion 66A projecting from the side wall of the light source device 1, whereby the position of the projector 2 is determined. Therefore, if the fixing screw 65A is inserted into the screw hole 67A, the fixing screw 65B is inserted into the screw hole 67B, the fixing screw 65C is inserted into the screw hole 67C, and the fixing screw 65D is inserted into the screw hole 67D and tightened. The moving table 4A can be fixed at a position where the axis coincides with the optical axis of the light source device 1.

Next, when using the digital video projector 3, the light source unit of the light source device 1 is replaced with a projector unit 15B (FIG. 7). Then, the moving table 4A is moved leftward in FIGS.
The rightmost end of the guide hole 64 contacts the rightmost guide protrusion 66C, whereby the digital video projector 3 is positioned. Therefore, the fixing screw 65C is inserted into the screw hole 67A,
If the fixing screw 65D is inserted into the screw hole 67B, the fixing screw 65E is inserted into the screw hole 67C, and the fixing screw 65F is inserted and tightened, the optical axis of the digital video projector 3 and the optical axis of the light source device 1 match. The moving table 4A can be fixed at the position where it has been set.

(Embodiment 2) FIG. 8 shows an embodiment of a small projection device. Reference numeral 7 denotes a shelf protruding from the side wall of the light source device 1, on which the moving table 4B is mounted. The shelf plate 7 is provided with two guide projections 71 having a triangular cross section in a direction perpendicular to the optical axis of the light source device 1. on the other hand,
The moving table 4B is provided with two guide grooves 72 at positions corresponding to the guide protrusions 71. Therefore, the moving table 4B can be slid and moved in a direction perpendicular to the optical axis of the light source device 1.

Further, as shown in FIG.
At four corners of B, fastening knobs 73 for fixing the moving table 4B to the shelf 7 are provided. The tip of the tightening knob 73 reaches the rear surface of the shelf 7 through a through-hole 74 provided through the moving table 4B and a through-hole 75 provided through the shelf 7, and is moved by the nut 79. The table 4B can be tightened to the shelf 7.

If the tightening knob 73 is provided at the position where the projector is set and the position where the digital video projector is set, the moving table is moved to the left and right, so that the moving table is moved to the position coincident with the optical axis of the light source device. , The projector or digital video projector can be selectively moved to fix it.

Reference numeral 76 denotes an adjustment screw. The screw 76 is screwed into the screw hole 78 and the tip thereof is pressed against the shelf plate 7 to provide a gap between the moving table 4B and the shelf plate 7. By adjusting the gap up and down, the elevation angle of the projector or digital video projector placed on the moving table 4B can be adjusted.

[0024]

According to the projection apparatus of the present invention, a projector and a digital video projector are mounted in parallel on a moving table, and the optical axis of the light source device and the optical axis of the projector or the optical axis of the digital video projector are aligned. Since the projector and the digital video projector can be selectively moved to the coincident positions, the projector and the digital video projector can be switched and used in a short time in a simple operation corresponding to the program of the movie theater.

The projector according to the present invention is configured so that the projector and the digital video projector can be selectively switched and used for one light source device. Therefore, when the projector and the digital video projector are separately configured. This saves space and allows installation in a small projection room.

[Brief description of the drawings]

FIG. 1 is a side view of a projection device according to an embodiment of the present invention.

FIG. 2 is a front view of the projection device.

FIG. 3 is a perspective view when the projection device is set for a projector.

FIG. 4 is a perspective view showing a relationship between a light source device and a moving table.

FIG. 5 is an enlarged perspective view of a part of the light source device.

FIG. 6 is a perspective view of a light source unit.

FIG. 7 is a perspective view of another type of light source unit.

FIG. 8 is a side view showing another embodiment of the projection device.

FIG. 9 is a partial cross-sectional side view showing details of the moving table.

[Explanation of symbols]

 Reference Signs List 1 light source device 2 projector 3 digital video projector 4A, 4B moving table 5 rail 7 shelf 11 housing

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[Procedure amendment]

[Submission date] February 17, 2000 (2000.2.1
7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0002

[Correction method] Change

[Correction contents]

[0002]

2. Description of the Related Art Recently, digital video projectors that catch a video signal transmitted by satellite broadcasting, reproduce a video signal, and project the video signal on a screen have begun to spread rapidly. Accordingly, there has been a trend in permanent movie theaters in which it is necessary to switch between screening by a projector using a conventional movie film and screening by a digital video projector at any time. 2. Description of the Related Art At present, projectors used in movie theaters and the like are configured as devices independent of a projector that uses a movie film and a digital video projector that reproduces and broadcasts a video signal.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0003

[Correction method] Change

[Correction contents]

[0003]

However, in a large-sized projector, a light source device including a power supply device has a large capacity and a large weight. Therefore, in a narrow projection room of a movie theater, a film projector and a video signal are reproduced. There is no space for installing both the digital video projector and the inconvenience of alternately loading and using both. In addition, for that purpose, there is a trouble that the positioning and the adjustment have to be performed every time one of the projection devices is installed.
The present invention not only allows a projector and a digital video projector to be selectively used for an existing light source device, but also makes the switching easy, requires little space, and does not require complicated adjustment. It is intended to provide a device.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

SUMMARY OF THE INVENTION The present invention achieves the object of saving space and power by making it possible to switch between a projector and a digital video projector for a common light source device.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

That is, a projection device according to the present invention is a light source device configured so that a light source unit for a projector and a light source unit for a digital video projector can be selectively attached;
A moving table including a projector body using an external light source and a digital video projector main body using an external light source arranged in parallel, and having moving means for moving the main body relative to the light source device; A guide mechanism for guiding the projector in a direction perpendicular to the optical axis of the light source device; and a position where the optical axis of the projector matches the optical axis of the light source device, or the optical axis of the light source device. Positioning and fixing means for selectively positioning and fixing the moving table at positions where the optical axes of the video projector coincide with each other are provided.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

The projector is, for example, a 35 mm projector, and is a large projector mainly used in movie theaters and the like. A digital video projector using an external light source is, for example, a digital light processing system (DLP) developed by Texas Instruments.
A video projector that uses a micromirror to reproduce a video signal sent by satellite broadcasting into a video signal and projects the video signal on a screen.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

The light source device uses a high-pressure xenon lamp, and includes a power supply device and a light source unit including a lamp, a reflecting mirror, and the like. 3 for the light source unit
A normal single mirror light source unit is used for a 5 mm projector, and a double mirror light source unit is usually used for a video projector, but a common light source unit may be used in the future.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010]

1 and 2 show an overall view of a projection apparatus according to the present invention. FIG. 1 is a side view thereof, and FIG. 2 is a front view thereof. In the figure, 1 is a light source device, 2 is 3
5 mm projector, 3 is a digital video projector (for example, DLP Cinema (registered trademark) manufactured by Texas Instruments, or other companies), 4A is a moving table, and 5 is a rail as a guide mechanism.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

The projector 2 is equipped with a lens system 21, a film driving mechanism 22, a sound head 23, a reel base 24, and the like. Below it, four mounting plates 45 for mounting on the moving table are mounted. The digital video projector 3 includes a lens system 31, a main body 32 containing an image reproducing device, and the like. Below it, four mounting plates 46 for mounting on the moving table are mounted. The moving table 4A includes a table board 41, four legs 42 to which wheels 43 are attached, and the like. Legs 42
Are provided with a length adjusting screw 44, respectively, so that the length of the leg 42 can be expanded or contracted to adjust the depression angle of the projector or the video projector.

Claims (1)

[Claims] 1. A light source device configured to selectively mount a light source unit for a projector and a light source unit for a digital video projector; a projector body using an external light source and a digital video projector body using an external light source are arranged in parallel. A moving table for moving the moving table relative to the power supply device; a guide mechanism for guiding the moving table in a direction perpendicular to the optical axis of the light source device; And selectively positioning the moving table at a position where the optical axis of the projector matches the optical axis of the light source device or at a position where the optical axis of the video projector matches the optical axis of the light source device. And a positioning and fixing means for fixing.