JP2006133461A - Screen for projection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen for projection where a video position can be easily changed in the vertical directions, even at whatever position it may be attached or hung. <P>SOLUTION: One end of a transparent sheet-like member 4, composed of soft synthetic resin, is coupled with a rotating body to which the sheet-like member 4 is freely taken up, and one end of the reflection-type sheet-like flexible screen 1 for reflecting video from a projection device is coupled with the other end of the sheet-like member 4 whose one end is coupled with the rotating body, and an extending position in extending the screen 1 and the sheet-like member 4 taken up to the rotating body downward can be changed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is fixed to a wall or ceiling, and when not required, the screen is wound around a rotating body. When in use, the rotating body is rotated and the wound screen is drawn downward to draw out a projector or the like. The present invention relates to a projection screen configured to be able to project an image from a projection device.

The projection screen is connected to one end of the screen to a rotating body, and when used, the rotating body is driven to rotate to draw out the wound screen downward, and then reflect the image from the projector or other projection device. The image is projected on the screen by touching the screen from the front side (see, for example, Patent Document 1).
JP 2000-130057 (see FIG. 1)

  As in the above-mentioned Patent Document 1, a projection screen that is fixed to a wall or ceiling or suspended from the ceiling is configured to have a screen that is slightly larger than the image area required for projecting an image. It is common. Then, such a screen is pulled down and put into use, but the position of the screen at that time is always the same, so in order to change the position of the screen, the mounting position of the projection screen It has to be changed, and is troublesome and time-consuming. By the way, depending on the location, it may not be possible to attach a projection screen to the wall.In this case, the projector will be mounted on a high ceiling or suspended, and the screen cannot be placed at the desired height. There was room for improvement.

  SUMMARY OF THE INVENTION In view of the above situation, the present invention intends to provide a projection screen that can easily change the image position in the vertical direction regardless of the position at which it is attached or suspended. .

In order to solve the above-described problems, the present invention connects one end of a transparent sheet-shaped member made of a soft synthetic resin to a rotatable roll, and the sheet-shaped member has one end connected to the rotary body. When connecting one end of a reflection-type sheet-like flexible screen for projecting an image from the projection device to the other end of the projection device, the screen and the sheet-like member wound around the rotating body are drawn out downward. A projection screen was constructed by changing the feeding position.
By connecting the screen to the sheet-like member as described above, the screen can be extended and lowered to any position below. In addition, by forming the sheet-like member from a transparent material, the screen can be shown floating in the air via the transparent sheet-like member when used at night or in a dark place. In addition, it is preferable to set the thickness of the screen and the thickness of the sheet-like member to a thickness in the range of 0.075 mm to 0.4 mm. Even if the thin screen and the sheet-like member are wound around the rotating body, Compared to the case where only the screen is wound up, it does not become extremely thick. Further, for example, when the thickness of the sheet-like member is reduced compared to the thickness of the screen, the thickness of the state wound on the rotating body can be suppressed as small as possible, and conversely, the thickness of the screen is reduced. In contrast, when the thickness of the sheet-like member is increased, there is an advantage that wrinkles are hardly generated in the sheet-like member, and the sheet-like member is set according to the length of the sheet-like member.

  A casing for housing the rotating body is provided, and a lower end surface of the casing is provided with an opening that allows the screen and the sheet-like member wound around the rotating body to be drawn downward, and the casing is fixed to a wall or a ceiling. An attachment member for fixing to the member may be provided.

  In the state where the casing is fixed to the fixing member via the mounting member, the vertical length of the sheet member may be set so that the lower end of the screen drawn downward contacts the floor surface.

  You may comprise the said attachment member so that a position change is possible with respect to the said casing.

  Many air holes may be formed in the sheet-like member.

  By connecting the screen to the sheet-like member, it is possible to extend the screen and lower it to any position below, and even when attached to a high place such as the ceiling, the screen can be lowered to a position that is easy to see below It becomes unnecessary to change the mounting position, which is advantageous in terms of handling and use. Moreover, by constructing the sheet-like member from a transparent material, the screen can be shown floating in the air via the transparent sheet-like member during night use or use in a dark place. It can be increased to a product with high product value. In particular, even when the vertical dimension of the sheet-like member is set longer than the vertical dimension of the screen, by suppressing the thickness to 0.4 mm at the maximum, it becomes extremely thick in a state where they are wound around a rotating body. Therefore, it is possible to avoid an increase in the size of the entire projection screen.

  A casing for storing the rotating body is provided, and a lower end surface of the casing is provided with an opening that allows the screen and the sheet-like member wound around the rotating body to be drawn downward, and the casing is fixed to a fixing member such as a wall or a ceiling. By providing the fixing member for fixing, the casing can be quickly fixed to the fixing member via the mounting member.

  In the state where the casing is fixed to the fixing member via the mounting member, if the vertical length of the sheet member is set so that the lower end of the screen drawn downward contacts the floor surface, the ceiling to the floor surface It can be utilized as a sheet member of a projection screen and a partition member that can be partitioned by a screen.

  By configuring the mounting member so that the position of the mounting member can be freely changed, the mounting member can be positioned in accordance with the distance between the channel members on the ceiling, for example, and can be mounted at a position where it cannot be mounted. But there is an advantage that can be installed.

  By forming a large number of air holes in the sheet-like member, it is possible to prevent the screen from shaking greatly due to the wind from the air conditioner by allowing the air from the air conditioner to pass through the large number of air holes.

  FIG. 1 shows a projection screen 2 including a reflective sheet-like flexible screen 1 for projecting an image from a projection device such as a projector P (shown in FIG. 4). The projection screen 2 is provided with a cylindrical rotating body (not shown) that can be driven and rotated by an electric motor in a casing 3 having an opening (not shown) formed in the lower end surface. A transparent sheet-like member 4 (vertical dimension longer than the vertical dimension of the screen 1) made of a soft synthetic resin (for example, a PET (polyethylene terephthalate) film or another material). However, the sheet-like member 4 may be connected to one end of the sheet-like member 4 by connecting one end thereof. One end of the screen 1 is connected to the other end. Accordingly, the sheet-like member 4 is driven by driving an electric motor (not shown) for driving and rotating the rotating body using a remote control tool such as a remote control (wireless is preferable, but it may be wired). In addition, the screen 1 is configured to be switched between a storage state in which the screen 1 is wound around a rotating body and a use state in which an image can be projected from the opening of the casing 3 downward. A bar is provided at the other end (lower end) of the screen 1. A pair of left and right mounting members (brackets) 6 and 6 for fixing to a fixing member such as a wall or a ceiling are attached to the left and right ends of the casing 3. In addition to connecting the bottom surface of the sheet-like member 4 and the back surface of the top end of the screen 1 using a double-sided tape having an adhesive on both sides, it is directly connected with an adhesive, or in some cases by thermal welding or the like. You may connect. The screen 1 can be composed of, for example, a white paint applied to the surface of a PET (polyethylene terephthalate) film, or a film in which white particles are kneaded into PET (polyethylene terephthalate). It may be configured. And although the thickness of the screen 1 and the thickness of the sheet-like member 4 are about 0.1 mm, it is preferable to set to the thickness of the range of 0.075 mm-0.4 mm. In addition, the thickness of the screen 1 and the thickness of the sheet-like member 4 can be made the same, and either one can be increased.

  By providing the sheet-like member 4 having a longer vertical dimension than the screen 1 as described above, the vertical position of the screen 1 can be freely changed. For example, as shown in FIGS. The projection screen 2 may be used as a partition member for partitioning the opening 7 for forming a passage formed at the boundary between the two rooms A and B. Thus, by using the projection screen 2 as a partition member, it is possible to prevent light from the adjacent room A from leaking into the room B on the side where the projection screen 2 is viewed without using another shielding member. Can do. Further, when it is desired to keep the passage open, the sheet-like member 4 and the screen 1 may be rolled up and stored in the casing 3. 2 and 3, the screen 1 is positioned in a state where there is a gap between the bar 5 at the lower end of the screen 1 and the floor surface F, but the screen 1 is lowered until the bar 5 is in contact with the floor surface F. It can also be used. Therefore, the vertical length of the sheet-like member 4 is set so that the bar 5 at the lower end of the screen 1 can be lowered to a position where the casing 3 is attached to the ceiling or a position close to the ceiling. However, the length may be set such that a slight gap is generated between the bar 5 at the lower end of the screen 1 and the floor surface F. The viewing room B has an effect that the image can be clearly seen in a dark room or a room with reduced illuminance, but it may be a bright room. In addition, the adjoining room A, like the viewing room B, has an effect that the image is more clearly visible if it is a dark room or a room with reduced illuminance, but it may be a bright room.

  2 to 4 show a case where the projection screen 2 is used as a partition member, FIG. 5 shows a case where the projection screen 2 is attached to the ceiling surface T. In this case, by placing the screen 1 close to the ceiling surface T (the sheet-like member 4 is made shorter than that shown in FIG. 1), particularly at night or in a dark place (dots are added in the figure). ) To display the image on the screen 1, it is possible to make the screen 1 appear to float in the air. In FIG. 4, there is an advantage that the image can be made clear by making the room B in which the image is displayed a dark room (shown by dots), but it is not always necessary to use the dark room.

  Further, although the screen 1 is drawn out or wound up by using an electric force, it may be drawn out or wound up by a manual force. In this case, as shown in FIG. 5, one end of a transparent fishing line (which may not necessarily be transparent) 9 is tied to a hole 8A of a handle 8 attached to the center of the bar 5 in the left-right direction. If attached, the screen 1 can be pulled by a manual force by pulling the fishing line 9. The screen 1 in this case is provided with a stopper mechanism that can hold the screen 1 at an arbitrary vertical position by pulling the fishing line 9 and releasing the hand, and the screen held at an arbitrary position. When winding 1, the screen 1 can be wound by pulling the fishing line 9 downward slightly and releasing the hand.

  As shown in FIG. 5, the mounting members 6 and 6 may be configured to be position-changeable with respect to the casing 3. That is, the rail 3A for holding the mounting members 6 and 6 slidably in the left-right direction is provided on the back surface of the casing 3, and the mounting members 6 and 6 are slid to any left and right positions with respect to the casing 3. The attachment members 6 and 6 can be repositioned so that attachment is possible even at places where attachment is not possible.

  As shown in FIG. 6, a large number of air holes 4 </ b> A may be formed in the sheet-like member 4. By forming these ventilation holes 4A, the wind from the air conditioner passes through a large number of ventilation holes 4A, and the screen 1 is received by the sheet-like member 4 that is elongated by drawing the wind from the air conditioner downward. There is an advantage that a large shaking can be avoided.

It is a perspective view of the projection screen which shows the use condition which extended the screen. It is a front view of the projection screen which shows the state which has arrange | positioned the screen to the passage of two rooms. It is a perspective view of the projection screen which shows the state which has arrange | positioned the screen to the passage of two rooms. It is a top view of the projection screen which shows the state which has arrange | positioned the screen to the passage of two rooms. FIG. 10 is a perspective view of another projection screen in which the screen feed position is changed. It is a perspective view of another projection screen in which a vent is formed in a sheet-like member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Screen 2 Screen for projection 3 Casing 3A Rail part 4 Sheet-like member 4A Vent hole 5 Bar 6 Mounting member 7 Opening 8A Hole 8 Handle 9 Fishing line A, B Room F Floor surface P Projector T Ceiling surface

Claims (5)

  To connect one end of a transparent sheet-shaped member made of a soft synthetic resin to a revolvable rotating body and project an image from a projection device on the other end of the sheet-shaped member having one end connected to the rotating body A projection-type screen having a sheet-like flexibility is connected to the screen, and the screen and the sheet-like member wound around the rotating body are connected to each other so that the feeding position can be changed. screen.   A casing for housing the rotating body is provided, and a lower end surface of the casing is provided with an opening that allows the screen and the sheet-like member wound around the rotating body to be drawn downward, and the casing is fixed to a wall or a ceiling. The projection screen according to claim 1, further comprising an attachment member for fixing to the member.   The vertical length of the sheet member is set so that the lower end of the screen drawn downward contacts the floor surface in a state where the casing is fixed to the fixing member via an attachment member. Projection screen.   The projection screen according to claim 2 or 3, wherein the mounting member is configured to be freely changeable in position relative to the casing. The projection screen according to claim 1, wherein a plurality of ventilation holes are formed in the sheet-like member.

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