JPH0351878A - Projector device - Google Patents

Abstract

PURPOSE:To improve the degree of freedom in using a floor surface by emitting a video light from the projector main body in the opposite direction to a screen, reflecting the light by a mirror, and then making the light incident on the screen. CONSTITUTION:The projector 6 is mounted on one side wall 4 perpendicular to a back wall 2 and a video is projected on a screen 3. The projector 6 is provided with the main body 61 having a lens and a video producing part, and the mirror 62 which almost reverses the optical path for emitted light. The main body 61 emits red, green and blue image lights produced from respective input video signals in the opposite direction to the screen 3, as the uniaxial video light. After the light is reflected by the mirror 62, the projector makes the video light incident on the screen 3. Thereby, the degree of freedom in using the floor surface is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a projector device for displaying an enlarged video image. [Prior Art] This type of projector device consists of a projector and a screen, and the projector emits red (R) image light,
Green (G) image light and blue (B) image light are projected onto a screen, and the colors are combined on the screen to display an image.

By the way, in conventional projector devices, the projector is installed on the floor because the screen is installed on the wall.

[Problem to be solved by the invention]

However, the projector has a relatively large external shape, and when installed on the floor, it makes a narrow room even narrower, causing various inconveniences.

The present invention has been made in view of these points, and an object thereof is to provide a projector device that solves the above-described problems.

[Means to solve the problem]

For this purpose, the first invention is to attach a screen to one of the orthogonal walls, attach a projector to the other wall, and provide the projector with a mirror in addition to the projector body, so that the image light from the projector body can be reflected. The light is emitted in the opposite direction to the screen, reflected by the mirror, and then made incident on the screen.

A second invention is to attach a screen to one of the orthogonal walls, attach a projector to the other wall, provide the projector with a mirror in addition to the projector body, and provide another mirror at a position facing the screen. The image light from the projector main body is emitted toward the screen, is reflected by the mirror, and is then reflected by the other mirror before being incident on the screen.

〔Example〕

Examples of the present invention will be described below. In FIG. 1, 1 indicates a projection room, 2 is a rear wall from which a screen 3 is suspended, and 4 and 5 are side walls. In this embodiment, the projector 6
is formed into a thin shape and attached to the surface of one side wall 4 perpendicular to the back wall 2 to project an image onto the screen 3.

The projector 6 includes a main body 61 having a lens and a video production section, and a mirror 62 that changes the optical path of emitted light in substantially the opposite direction. In the main body 61, a mirror 6 is used as image light in which the optical axes of red image light, green image light, and blue image light created according to an input video signal are aligned on one axis.
Therefore, the optical path of the image light can be expanded by almost double the angle by the mirror 62. An image can be projected onto the central screen 3. Also, compared to the case where the image light is projected directly from the zero body 6l toward the screen 3, the optical path length becomes larger by the amount of mirror 62 used, and the incident angle of the image light on the screen 3 becomes closer to a right angle. , screen distortion and focus characteristics can be improved accordingly. Also, since it is not necessary to use a lens with a particularly large magnification, the lens can also be inexpensive. In this case, the mounting height of the projector 6 on the side wall 4 is preferably higher so that the projected light is not blocked by the head of the listener located in front of the screen 3, and the height increases as the distance from the back wall 2 increases. This is preferable because the rate can be increased.

FIG. 3 is a diagram showing another example. Here, a mirror 8 is installed on the front wall 7 opposite to the back wall 2, and the direction of the projector 6 attached to the side wall 4 is reversed from that shown in FIG. The reflected light from the mirror 8 was made to enter the screen 3 on the back wall 2 side.

In this embodiment, the image light emitted from the main body 61 of the projector 6 is reflected by the mirror 62 inside the projector 6, and further reflected by the main mirror 8 of the front wall 7, and then the image light is emitted from the screen 3.
Since the path of incidence is followed, the length of the forward path is longer than in the embodiment shown in FIG. Characteristics can be further improved, and lenses can be used at lower prices. Note that the mirror 8 does not necessarily need to be attached to the front wall 7, and may be supported by a ball or the like and hung from the ceiling, or may be erected from the floor.

〔Effect of the invention〕

As described above, according to the present invention, since the projector is attached to the wall, the degree of freedom in using the floor surface is increased, and by making the projector thin, it is possible to reduce the protrusion from the wall.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating the use of a projector device according to an embodiment of the present invention, FIG. 2 is a detailed diagram illustrating the projector, and FIG. 3 is a diagram illustrating the use of another example of the projector device.

Claims (2)

[Claims] (1) A screen is attached to one of the orthogonal walls, a projector is attached to the other wall, a mirror is provided in addition to the projector body, and the image light from the projector body is directed in the opposite direction to the screen. A projector device characterized in that the light is emitted toward the mirror, is reflected by the mirror, and is then made incident on the screen. (2) A screen is attached to one of the orthogonal walls, a projector is attached to the other wall, a mirror is provided on the projector in addition to the projector body, and another mirror is provided at a position facing the screen, A projector device characterized in that image light from the projector main body is emitted toward the screen, is reflected by the mirror, is then reflected by another mirror, and then is made incident on the screen. .