JPH06274098A - Video projection device - Google Patents

Abstract

PURPOSE:To project an image over a wide range and decrease the number of projectors by providing a projector with a driving mechanism and moving it on an orbit in an optional direction, and projecting the image. CONSTITUTION:A rail 3 is installed bellow the projector 1 along a moving direction (a), casters 4 are fitted to the projector 1 so as to hold the rail 3 between, and casters 4 are fitted between the projector 1 and rail 3. Then a force is applied in the moving direction (a) to move the projection 1 on the rail 3 and then this one projector 3 serves as three projectors. Consequently, only the projector 1 can be moved, so a image having a wider range than a conventional image formation screen can be projected on an image formation screen. Further, images of optional parts can be displayed one over another when necessary.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector for projecting an image and a projection device comprising an image-forming screen for forming the image of the projected image. A plan view of this state is shown in FIG. In the figure, 1
Is a projector and 2 is an imaging screen.

[0002]

2. Description of the Related Art As a conventional technique, the projector section in the above projection apparatus is used by being fixed to a floor or a table for mounting.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
As the projection range of the image to be projected becomes wider, there is a drawback that a plurality of projector units are needed. According to the present invention, although the projection range of the image to be projected is wide, it is possible to reduce the number of projector units when it is not necessary to simultaneously project the image on the entire projection range (projecting only partially). To aim.

[0004]

According to the present invention, a drive mechanism is added to the projector section of the projection apparatus. That is, in a projection device configured by a projector for projecting an image and an imaging screen for forming an image of the projected image, a drive mechanism is provided in the projector unit to move in an arbitrary direction on an orbit, An image is projected, and if necessary, an image projected from a projector whose image projection direction is fixed and a projector unit having a rotation mechanism capable of changing the image projection direction are provided. It is designed to be displayed on the screen by superimposing the image of the section.

[0005]

As a result, since only the projector unit can be moved, it is possible to project an image in a wider range than that of the conventional imaging screen. Further, it is possible to display the video of an arbitrary portion in an overlapping manner, if necessary.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 2 and 3 are views showing a drive mechanism of the projector, FIG. 2 is a side view, and FIG. 3 is a rear view. As shown in both figures, the rail 3 is moved under the projector 1 in the moving direction (arrow a).
2), and two casters 4 are attached to the projector 1 so that the rails 3 are sandwiched between them. Next, four casters 4 are attached between the projector 1 and the rail 3 so that the six casters 4 rotate with respect to the rail surface. Here, when a force is applied in the direction of arrow a, the projector 1 moves on the rail 3. As a result, as shown in FIG. 1, one projector 1 can substitute for three projectors 1. 1 is a plan view of the embodiment. Next, as an example of use of the present invention, a simulated visual field display device for displaying a simulated video image created by a computer drawing method of a flight simulator for performing flight training on an airplane to the operator as a visual field will be described as an example. 4 and 5 show an example of a conventional simulated visual field display device. 4 is a plan view and FIG. 5 is a side view. As shown in the figure, the three projectors 1 project a simulated image on the spherical imaging screen 2, and the image thus formed is reflected by the concave mirror 5 so that the operator can see the image from the viewpoint position 6. Further, in the past, the resolution of the projected image was uniform over the entire visual field, but in order to partially improve the resolution, the high resolution projector 7 as shown in FIGS.
The image (the optical path of the image is indicated by hatching) is partially synthesized and projected on the image forming screen 2 by. 6 is a plan view and FIG. 7 is a side view. At this time, if the high-resolution projector 7 is fixed as in the conventional case, a plurality of high-resolution projectors 7 are required to project an image on the entire surface of the imaging screen 2. Therefore, FIG. 8 and FIG.
The high-resolution projector 7 as shown in FIG. 8 is a side view and FIG. 9 is a rear view. As shown in both figures, the rotation unit 8 serves as a rotation axis, and enables the high-resolution projector 7 to rotate up and down (shown by an arrow b). The rotation unit 9 serves as a rotation axis and enables the high-resolution projector 7 to rotate right and left (indicated by an arrow c). If this high-resolution projector 7 is installed near the spherical center of the spherical imaging screen 2, the direction can be changed over the entire range of the imaging screen 2, and a single high-resolution projector 7 can produce high-resolution images. It becomes possible to synthesize and project.

[0007]

According to the present invention, a small number of projector units can be used without installing a plurality of projector units.
Since it can be used as a substitute, the economy can be improved and the weight of the projection device can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an overall configuration of the present invention.

FIG. 2 is a side view showing an embodiment of the present invention.

FIG. 3 is a rear view showing an embodiment of the present invention.

FIG. 4 is a configuration plan view of a conventional simulated field-of-view display device for a flight simulator.

FIG. 5 is a configuration side view of a conventional simulated field-of-view display device for a flight simulator.

FIG. 6 is a configuration plan view of a high resolution simulated visual field display device showing an embodiment of the present invention.

FIG. 7 is a configuration side view of a high resolution simulated visual field display device according to an embodiment of the present invention.

FIG. 8 is a side view showing an embodiment of the present invention.

FIG. 9 is a rear view showing an embodiment of the present invention.

FIG. 10 is a plan view of a conventional example.

[Explanation of symbols]

 1 Projector 2 Imaging Screen 3 Rail 4 Castor 5 Concave Mirror 6 Viewpoint 7 High Resolution Projector 8 Rotation Axis 9 Rotation Axis

Claims (3)

[Claims] 1. A projection device comprising a projector for projecting an image and an image forming screen for forming an image of the projected image, wherein a drive mechanism is provided in the projector section, and an orbit is set in an arbitrary direction. An image projection device that moves and projects an image. 2. A projection device comprising a projector having a fixed image projection direction and an image forming screen for forming an image of the projected image, and a projector section having a rotation mechanism capable of changing the image projection direction. An image projecting device, wherein the image of the projector unit and the image from the projector whose image projection direction is fixed are superimposed and displayed on the screen. 3. A projection device comprising a plurality of projectors whose image projection directions are fixed, a spherical image-forming screen for forming an image of the projected image, and a concave mirror for enlarging the image formed on the screen. In, a projector unit having a rotation mechanism capable of changing the image projection direction is provided, and the image of the projector unit and the image from the projector whose image projection direction is fixed are superimposed and displayed on the screen. Video projection device.