JPH02172380A - Video projector - Google Patents

Abstract

PURPOSE:To obtain a video of a large screen in a narrow space by placing a projection tube and a projection lens of a video projector perpendicular to a floor, providing a reflection mirror to the upper part and moving the projection tube, the projection lens or the reflection mirror vertically. CONSTITUTION:A projection tube and a projection lens 11 are placed nearly perpendicular to a floor, a reflection mirror 13 is provided to the upper part and the screen size is matched by moving the projection tube, the projection lens 11 or the reflection mirror 13 vertically. Then a light is projected upward by the video projection tube and the projection lens 11 and reflected in the reflection mirror 13 provided on the upper part and projected on a screen 16. When it is required to change the screen size or to change the room for installation, the projection of the main body 12 such as the projection tube or the projection lens 11 is adjusted vertically or the vertically position of the reflection mirror 13 at the upper part and the angle are adjusted, then the pattern with the screen size is obtained. Thus, the video image on a large screen size in a narrow installation space is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a video projector device for projecting television images and the like.

BACKGROUND OF THE INVENTION In recent years, there has been a demand for images reproduced by television equipment to have a high level of impact and a sense of realism. Among them, there is a video projector device for obtaining reproduced images on a large screen.

An example of a conventional video projector device will be described below with reference to the drawings.

FIG. 3 is a block diagram of a conventional video projector device, and FIG. 4 is a screen size correspondence diagram of the conventional video projector device. In FIG. 3, 31 is a projection type video projector, 32 is a projection screen, and 33
34 is a projection lens for red (R), 34 is a projection lens for green (G), and 36 is a projection lens for blue (B).

if, the projection type video projector 31 displays red and green.

A blue image is outputted to each projection tube, and the red image is outputted by the red projection lens 33, the green image is outputted by the green projection lens 34, and the blue image is outputted by the blue projection lens 35. The image is projected onto the projection screen 32. At this time, in order to focus the red, green, and blue images on the screen, the positions of the respective projection lenses are finely adjusted.

In addition, in order to correspond to the size of the screen (screen), screen A with screen size a as shown in Figure 4 is used.
41, the distance is 111 from Nuclean A41.
A video projector 43 is installed at ', a' at 31\-7. When projecting onto the screen B42 with screen size b, the video projector 43 may be installed at a distance b' from the screen B42.

There are also other types of video projectors, such as a ceiling-type video projector that fixes the video projector to the ceiling, and a rear-projection video projector that projects from behind the screen.

Problems to be Solved by the Invention However, with the above configuration, in order to reproduce images on a large screen, the video projector must be placed on the floor, which takes up space and makes it impossible to use the space in the room effectively. You still have to relocate and adjust the video projector every time you change the installation location or screen size. If ceiling-mounted (I) type is used, ceiling installation work will be difficult and dangerous. The rear projection type requires a lot of work to install and also requires a large installation space.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a video projector device that can realize large-screen images in a narrow installation space and can easily accommodate screen sizes without moving the installation location.

Means for Solving the Problems In order to solve the above problems, the video projector device of the present invention has a projection tube and a projection lens section installed in a direction substantially perpendicular to the floor surface, a reflecting mirror at the top, and It is designed to match the screen size by moving the tube, projection lens, or reflection mirror up and down.

Operation According to the present invention, with the above-described configuration, an image is projected upward by the image projection tube and the projection lens, reflected by the reflection mirror installed at the upper part, and projected onto the screen. It's Kade.
When changing the screen size or changing the room where the video projector is installed, adjust the position of the projection tube or projection lens up or down without changing the distance at which the video projector is installed. By adjusting the vertical position and angle of the reflecting mirror 5, the screen size can be adjusted according to the screen size, and a large screen image of any size can be easily projected.

Embodiment Hereinafter, a video projector device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a video projector device according to an embodiment of the present invention. In FIG. 1, 11 is a projection lens, 12 is a projection body, 13 is a reflection mirror, 14 is a projection body vertical adjustment lever, 15 is a reflection mirror vertical and angle adjustment lever, and 16 is a screen.

First, the projection body 12 emits red (R), green (G), and blue (B) images through respective projection tubes, and the image output of each color is projected upward by the projection lens 11 as shown in Fig. 1. do. Next, the images of each color are reflected by a partially attached reflecting mirror 13 and projected onto a screen 16 installed in the front.

Here, in order to change the size of the screen corresponding to various screen sizes, for example, the screen 6 /＼-/ To enlarge the screen, the projection main body 12 should be adjusted using the two-part adjustment lever 14 The position and angle of the reflecting mirror 13 are adjusted using the up and down and angle adjustment levers 15, and the focus is adjusted using the projection lenses of each color, and the image is projected onto the screen 16. To make the screen smaller, similarly adjust the projection body 12 by adjusting the two-part adjustment lever 1.
4, go up to the top, adjust the reflection mirror 13 and the projection lenses of each color, and project onto the screen 16.

As described above, according to this embodiment, the main body of the video projector device, such as the projection tube and the projection lens, is installed almost perpendicular to the floor surface, and the projector is mounted on the top of the video projector device. By moving the main body of the video projector device into two parts, it is possible to realize a large screen image in a small space, and to accommodate various screen sizes without having to move the installation location. Can be easily handled.

Next, other embodiments of the present invention will be described with reference to the drawings.

7-1 FIG. 2 is a block diagram of a video projector device according to another embodiment of the present invention. In FIG. 2, 11 is a projection lens, 12 is a projection main body, 13 is a reflection mirror, 14 is a vertical adjustment lever for the projection main body, 15 is a reflection mirror vertical and angle adjustment lever, and 16 is a screen.

The projection body 12 outputs red (R), green (G), and blue (B) images from respective projection tubes and projects them onto the upper part as shown in FIG. Next, the light is reflected by a reflecting mirror 13 attached to the upper part and projected onto a system screen 16 by a projection lens 11 attached to the front of the reflecting mirror 13. To change the size of the screen, move the projection body 12 up and down using the projection body up and down adjustment lever 14 as in the first embodiment, and move the reflection mirror 13 up and down using the reflection mirror up and down and angle adjustment levers 15. and screen 1
Project to 6.

According to another embodiment 7, the main body of the video projector device, such as a projection tube, is installed perpendicular to the floor, and the second part of the video projector device is provided with a reflecting mirror and a projection lens. By moving the projection body of the video projector device up and down and the reflection mirror up and down, it is possible to realize a large screen image in a small space, and it is also possible to easily accommodate various screen sizes without moving the installation location. .

Effects of the Invention As described above, according to the present invention, the projection tube and the projection lens of the video projector device are installed perpendicularly to the floor surface, and the reflection mirror is provided above the projection tube, the projection lens, or the projection tube. By moving the reflecting mirror up and down, a large screen image can be realized in a narrow space, and various screen sizes can be easily accommodated without changing the installation location.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the configuration of a video projector device according to an embodiment of the present invention, FIG. 2 is a schematic diagram of the configuration of a video projector device according to another embodiment of the invention, and FIG. 3 is a diagram of a conventional video projector device. The schematic configuration diagram, FIG. 4, is a 1ffi diagram showing the correspondence with the screen size of a conventional video projector device. 11 ・Projection lens, 12... Projection body, 13...
... Reflection mirror, 14 ... Projection main body vertical adjustment lever, 15 ... Reflection mirror vertical and angle adjustment lever 16
・ ・ Screen. Name of agent: Patent attorney Shigetaka Awano and one other person

Claims (1)

[Claims] A projection tube and a projection lens are installed in a direction substantially perpendicular to the floor surface, and a reflection mirror is provided above the projection tube to change the direction of the image from the projection tube toward a screen, and the projection tube, the projection mirror, or the reflection mirror is A video projector device configured to be movable up and down depending on the screen size.