JP3782624B2 - Projection device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a projection apparatus that can be used by arbitrarily switching between a projector and a digital video projector, and in particular, switching between a projector and a digital video projector used in a large video viewing facility such as a movie theater for the same light source apparatus. The present invention relates to a projection apparatus that can be used.
[0002]
[Prior art]
Recently, digital video projectors that catch video signals sent by satellite broadcasting, reproduce video signals, and project them onto a screen have begun to spread rapidly. Therefore, it has become a trend that permanent movie theaters have to switch between the screening by a projector using a conventional movie film and the screening by a digital video projector at any time.
Currently, a projection apparatus used in a movie theater or the like is configured as a device independent of a projector using a movie film and a digital video projector that reproduces and broadcasts a video signal.
[0003]
[Problems to be solved by the invention]
However, since the light source device including the power supply unit has a large capacity and a large weight in a large projection device, a space for installing both a film projector and a digital video projector for reproducing video signals in a narrow projection room of a movie theater There is no inconvenience that both are carried in and used alternately. In addition, for this reason, there is a problem that it is necessary to align and adjust each time one of the projection apparatuses is installed.
The present invention is not only capable of selectively switching between a projector and a digital video projector with respect to an existing light source device, but is also easy to switch, has a small space, and does not require complicated adjustments. An object is to provide an apparatus.
[0004]
[Means for Solving the Problems]
The present invention achieves the purpose of space saving and labor saving by switching between a projector and a digital video projector for a common light source device.
[0005]
That is, the projection apparatus of the present invention is a light source device configured to selectively attach a light source unit for a projector and a light source unit for a digital video projector; a projector main body using an external light source, and a digital video using an external light source A moving table for mounting the projector body in parallel and having moving means for moving the projector body relative to the light source device; guiding the moving table in a direction perpendicular to the optical axis of the light source device And the moving table at a position where the optical axis of the projector matches the optical axis of the light source device or a position where the optical axis of the video projector matches the optical axis of the light source device. And positioning / fixing means for selectively positioning and fixing.
[0006]
The projector is, for example, a 35 mm projector and is a large projector mainly used in a movie theater or the like.
A digital video projector that uses an external light source, for example, uses a digital light processing system (DLP system) developed by Texas Instruments to convert a video signal sent by satellite broadcasting into a micromirror. It is a video projector that is used to reproduce a video signal and project it onto a screen.
[0007]
The light source device uses a high-pressure xenon lamp, and includes a power source device and a light source unit including a lamp, a reflection 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 normal double mirror light source unit is used for a video projector. However, a common light source unit may be used in the future. .
[0008]
In the case of a large projection apparatus, the moving table is a tray type, and has four legs, each with wheels, and runs on a rail. Each of the four legs has 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 placed on a shelf plate attached to the light source device by a slide table. On the moving table, a projector and a video projector are arranged in parallel, that is, parallel to the optical axis of the light source device, and the positions of both eyepieces that receive the light emitted from the light source device are relative to the optical axis. It is placed and fixed so as to be in a vertical plane.
[0009]
As a guide mechanism, a combination of a linear rail installed at right angles to the optical axis of the light source device and a wheel running on it, and for a linear slide installed at right angles to the optical axis of the light source device A combination of the guide ridge and the guide groove can be used.
[0010]
【Example】
Embodiment 1 FIGS. 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 a 35 mm projector, 3 is a digital video projector (for example, DLP Cinema (registered trademark) manufactured by Texas Instruments, other companies), 4A is a moving table, and 5 is a guide. The rail as a mechanism is shown.
[0011]
The light source device 1 includes a lamp housing 11 incorporating a light source unit and a power housing 12 incorporating a power supply device. As shown in FIG. 5, the lamp housing 11 is provided with four fixing screws 13 for mounting the light source unit. Reference numeral 12 denotes an exhaust hole, and reference numeral 14 denotes a nut screwed to the fixing screw 13.
[0012]
There are two types of light source units: a light source unit 15A for a projector (FIG. 6) and a light source unit 15B for a digital video projector (FIG. 7), and they are exchanged according to their respective purposes. A single-type mirror 16A is used as a light source reflection mirror in the light source unit 15A used for a projector. In the light source unit 15B for the digital video projector, a double-type mirror 16B is used as a light source reflection mirror. In addition, 17 is a base, 18 is a through-hole for fitting in the fixing screw 13 provided in the lamp housing 11, and 19 is a handle for carrying the light source unit.
[0013]
The projector 2 is equipped with a lens system 21, a film drive mechanism 22, a sound head 23, a reel base 24, and the like. Below that, 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 incorporating an image reproducing device, and the like. Below that, four mounting plates 46 for mounting on the moving table are mounted. The moving table 4A includes a table substrate 41, four legs 42 to which wheels 43 are attached, and the like. Each of the legs 42 is provided with a length adjusting screw 44 so that the angle of the projector or the video projector can be adjusted by expanding and contracting the length of the legs 42.
[0014]
As shown in FIG. 4, the moving table 4A has a mounting hole 61 for mounting on the mounting plate 45 of the projector 2 with a bolt, and a mounting hole 62 for mounting on the mounting plate 46 of the digital video projector 3 with a bolt. Is provided. Further, a side plate 63 is provided on a side surface facing the light source device 1, and there are six fixing screws 65A, 65B, 65C, 65D, 65E, and 65F for positioning the moving table 4A and fixing the moving table, and a lateral plate. One guide hole 64 in the direction is provided.
[0015]
On the side wall of the light source device 1 facing the side plate 63, there are several guides loosely inserted in the guide holes 64 and screw holes 67A, 67B, 67C, 67D for receiving four of the six fixing screws. Protrusions 66A, 66B, 66C are provided. Reference numeral 26 denotes a hood for light rays emitted from the light source unit.
[0016]
Since the rail 5 is provided in a direction perpendicular to the optical axis of the light beam emitted from the light source device 1, the projector 2 or the digital video projector 3 placed on the moving table 4A is selectively moved from the light source device 1. It can be led to a position that matches the optical axis of the irradiated light beam.
[0017]
(Method of operation)
In the projection apparatus of the present invention, when the 35 mm projector 2 is used, the light source unit of the light source apparatus 1 is replaced with a projector unit 15A (FIG. 6). Then, as shown in FIG. 3 (showing a state where the lamp housing 11 is removed), the moving table 4A is moved rightward in the drawing. The wheel 43 of the moving table 4 </ b> A rotates on the rail 5 and moves in a direction perpendicular to the optical axis of the light beam emitted from the light source device 1.
[0018]
As shown in FIG. 4, the position of the projector 2 is positioned when the leftmost end of the guide hole 64 comes into contact with the leftmost guide protrusion 66 </ b> A protruding from the side wall of the light source device 1. 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 light of the projector 2 is fixed. The moving table 4A can be fixed at a position where the axis and the optical axis of the light source device 1 coincide.
[0019]
Next, when the digital video projector 3 is used, 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 digital video projector 3 is positioned by bringing the rightmost end of the guide hole 64 into contact with the rightmost guide protrusion 66C. Therefore, if the fixing screw 65C is inserted into the screw hole 67A, 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 into the screw hole 67D and tightened, the digital video projector 3 can be tightened. The moving table 4A can be fixed at a position where the optical axis and the optical axis of the light source device 1 coincide.
[0020]
(Example 2)
FIG. 8 shows an embodiment of a small projection device. 7 is a shelf plate protruding from the side wall of the light source device 1, on which the moving table 4B is placed.
The shelf plate 7 is provided with two guide protrusions 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.
[0021]
Further, as shown in FIG. 9, tightening knobs 73 for fixing the moving table 4B to the shelf board 7 are provided at the four corners of the moving table 4B. The tip of the tightening knob 73 reaches the back 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 fastened to the shelf board 7.
[0022]
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 to move the projector or the projector to the position corresponding to the optical axis of the light source device. The digital video projector can be selectively moved and fixed.
[0023]
Reference numeral 76 denotes an adjustment screw. The screw 76 is screwed into the screw hole 78, and the tip of the screw 76 is pressed against the shelf plate 7, thereby providing a gap between the movable table 4B and the shelf plate 7. By adjusting up and down, the elevation angle of the projector or digital video projector placed on the moving table 4B can be adjusted.
[0024]
【The invention's effect】
In 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 selected to coincide with each other. Therefore, the projector and the digital video projector can be switched between a simple operation and a short time in correspondence with the movie theater program.
[0025]
Since the projection apparatus of the present invention is configured so that the projector and the digital video projector can be selectively switched with respect to one light source device, the projection apparatus and the digital video projector are compared with the case where they are configured separately. It saves space and can be installed in a narrow projection room.
[Brief description of the drawings]
FIG. 1 is a side view of a projection apparatus according to an embodiment of the present invention.
FIG. 2 is a front view of the projection apparatus.
FIG. 3 is a perspective view when the projection apparatus 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 apparatus.
FIG. 9 is a partial cross-sectional side view showing details of the moving table.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Light source device 2 Projector 3 Digital video projector 4A, 4B Moving table 5 Rail 7 Shelf board 11 Housing

Claims (1)

A light source device configured to selectively attach a light source unit for a projector and a light source unit for a digital video projector;
Together placed in parallel digital video projector body to use the projector body and the external light source using an external light source, moving table with moving means for relatively moving with respect to the light source device;
A guide mechanism for guiding the moving table in a direction perpendicular to the optical axis of the light source device;
The movable table is selectively positioned at a position where the optical axis of the projector matches the optical axis of the light source apparatus or a position where the optical axis of the video projector matches the optical axis of the light source apparatus. And a positioning / fixing means for fixing the projection.

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