JPH05273647A - Screen - Google Patents

Abstract

PURPOSE:To prevent an imprint from being caused by an over-scanned video from occurring by constituting a bottom bar fixed to the lower end of a screen sheet by a black based color. CONSTITUTION:In a screen which consits of a sheet housing part 1, the screen sheet 2 which can be drawn out to the lower part of the housing part 1 and the bottom bar 3 fixed to the lower end of the sheet 2 and which is obtained by constituting the sheet 2 by dividing it to the effective screen part 2a of a white based color and the inefective screen part 2b of the black based color around the screen part 2a, the surface of the bar 3 is constituted by the black based color. Then, the sheet 2 is irradiated with light projected from a projector and the video is projected on the screen part 2a. The projected light is over- scanned samewhat wider than the screen part 2a and the screen part 2a is irradiated with it. However, since not only the light irradiating the screen part 2b but also the light irradiating the bar 3 is absorbed, the imprint of the video is not generated and the video is projected only on the screen part 2a. As the result, the video is easily viewed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen for displaying an image on a projector or the like.

[0002]

2. Description of the Related Art A conventional screen is fixed to a sheet storage portion 1, a screen sheet 2 drawn out below the sheet storage portion 1, and a lower end of the screen sheet 2 as shown in FIG. It is composed of a bottom bar 3. The screen sheet 2 can be stored in the sheet storage portion 1, and the surface of the screen sheet 2 is divided into a white effective screen portion 2a and a black invalid screen portion 2b around the effective screen portion 2a.

Thus, the light projected from the projector irradiates the effective screen portion 2a to display an image. Here, the image from the projector is displayed by being overscanned a little wider than the effective screen portion 2a, but the invalid screen portion 2a is displayed.
Since the part projected on b is not displayed, the effective screen section 2
It is displayed as an image with a clear outline by a.

[0004]

However, since the bottom bar 3 of the conventional screen is preferably formed in a white color for the reason that it is preferable that the bottom bar 3 of the screen has the same color as that of the sheet storage portion 1 when the screen sheet 2 is stored, There was a defect that the scanned image was reflected in the texture.

Therefore, it is an object of the present invention to provide a screen in which no reflection due to an overscanned image occurs.

[0006]

A screen of the present invention for solving the above-mentioned problems includes a sheet storage portion, and a screen sheet that can be drawn out below the sheet storage portion.
A screen composed of a bottom bar fixed to the lower end of the screen sheet, wherein the screen sheet is divided into a white-colored effective screen portion and a black-colored invalid screen portion around the effective screen portion. In the above, the surface of the bottom bar is formed in a blackish color.

[0007]

[Function] Even if an overscanned image is projected on the bottom bar, the surface of the bottom bar is blackish and no reflection occurs.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a screen showing an embodiment of the present invention. In FIG. 1, the screen includes a sheet storage unit 1, a screen sheet 2, and a bottom bar 3.
It consists of and. The sheet storage portion 1 is fixed to a ceiling or a wall, and the sheet storage portion 1 has a sheet winding means (not shown) built therein. Between the position where the screen sheet 2 is accommodated in the sheet accommodating portion 1 by the sheet winding means (the imaginary line position in FIG. 1) and the position where all of the screen sheet 2 is drawn out below the sheet accommodating portion 1 (the solid line position in FIG. 1). Is displaced by.

The screen sheet 2 has a white screen color (for example, white) effective screen portion 2a and a periphery of the effective screen portion 2a.
In addition, the black screen color (for example, black, gray) invalid screen portion 2b
It is divided into and. The effective screen portion 2a is set to have the same aspect ratio as the projected image. In this embodiment, the screen sheet 2 is made of a scratch-resistant vinyl chloride steel plate, and the surface of the invalid screen portion 2b is finished by matte embossing.

The bottom bar 3 has a tubular shape and serves as a weight for holding the flat surface of the screen sheet 2.
The surface of the bottom bar 3 is formed in a black color (for example, black or gray). It does not matter whether the color is the same as that of the effective screen portion 2a.

The operation of the above configuration will be described below. The light projected from the projector irradiates the screen sheet 2 and an image is displayed on the effective screen portion 2a. Here, the projection light is overscanned and emitted slightly wider than the effective screen portion 2a, but not only the light emitted to the ineffective screen portion 2b but also the light emitted to the bottom bar 3 is absorbed, so that the image is reflected. Does not occur. Therefore, the image is displayed only on the effective screen portion 2a, which is easy to see.

In addition, ergonomically, it is possible to arrange the screen at a position where the bottom bar 3 is close to the floor because it is possible to watch the image for a long time without being tired by displaying the image at about 15 degrees below the line of sight. In this case, conventionally, the bottom bar 3 may be illuminated by the reflected light from the floor, but in the present embodiment, the bottom bar 3 is not illuminated by the reflected light from the floor.

[0014]

As described above, according to the present invention, since the bottom bar fixed to the lower end of the screen sheet is composed of a blackish color, there is an effect that an overscan image is not reflected.

[Brief description of drawings]

FIG. 1 is a perspective view of a screen (example).

FIG. 2 is a perspective view of a screen (conventional example).

[Explanation of Codes] 1 ... Sheet storage section 2 ... Screen sheet 2a ... Effective screen section 2b ... Invalid screen section 3 ... Bottom bar

Claims (1)

[Claims] 1. A sheet storage unit, a screen sheet that can be pulled out below the sheet storage unit, and a bottom bar fixed to the lower end of the screen sheet.
In the screen configured by dividing the screen sheet into an effective screen part of white system color and the periphery of the effective screen part, and an invalid screen part of black system color, the surface of the bottom bar is composed of black system color. A screen characterized by that.