JPH10221780A - Screen device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a screen hardly wrinkled and loosened and to prevent it from being warped by providing a device with extension supporting parts arranged along in the left and the right side directions of a screen part and used for supporting the left and right sides of the screen part and extending the screen part in a left-and-light direction when the screen part is drawn out and used and take-up devices separately taking up the screen part and the extension supporting parts. SOLUTION: The screen part 110 taken up by the take-up device 150 arranged in a housing part 140 is drawn out in the lower direction of the housing part 140 and used in order to project a video. Then, the extension supporting parts 120 obtained by taking two as one set are respectively arranged along in the left and the right side directions of the screen part 110 so as to support the left and the right sides of the screen part 110 and extend the screen part 110 in the left-and-right direction when the screen part 11 housed in the housing part 140 is drawn out and used as the screen. Besides, the screen part 110 and the supporting parts 120 are separately taken up by the take-up devices 150, 155 and 156.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen device using non-self-supporting films and sheets as a screen portion, and more particularly to a screen device used for images such as a reflection screen having no distortion or slack.

[0002]

2. Description of the Related Art There are two types of projection screens, such as televisions, of a transmissive type and a reflective type. The transmissive type uses a relatively thick sheet that is self-supporting. Based on this, the reflective surface is coated with beads or titanium oxide to obtain a bright image. In recent years, in reflection type screens,
In addition to cloth-based screens, resin film screens have also emerged. And, because the screen of this resin film has poor self-sustainability, it adopts a winding mechanism and adopts a roll-up system that lowers the screen from the ceiling or a roll-down system that pulls the screen up from the bottom and pulls it up and down Was used as However, in the case of these types of screens, although the screen can be pulled up and down, the left and right directions are free due to the winding mechanism, and wrinkles and loosening are likely to occur. In the case where the shape was manufactured, the left and right ends were often warped due to shrinkage after molding when the image was projected. In order to solve this, measures such as putting a frame when setting the screen are taken, but furthermore, with a relatively simple structure, wrinkles and looseness do not occur when setting the screen to capture images In particular, there has been a demand for a method capable of preventing warpage (curling).

[0003]

As described above, in a roll-up type or roll-down type screen device employing a winding mechanism used for an image such as a reflection screen, the image is formed with a relatively simple structure. There has been a demand for a method of preventing wrinkles and loosening from occurring when the screen is set to be in a state of being projected, and preventing the occurrence of warping even when a resin-made shape such as a lens is provided on the screen. The present invention is intended to cope with this, and a screen device using a roll-up type screen adopting a winding mechanism based on a film or sheet without independence is set to a state where an image is taken. An object of the present invention is to provide a screen which does not easily generate wrinkles or looseness and which does not warp even when a resin-made shape such as a lens is provided on a screen.

[0004]

According to the present invention, there is provided a screen apparatus comprising: a screen section made of a non-self-supporting synthetic resin film or sheet wound by a winder provided in a storage section; A screen device which is drawn out and extended downwardly of a storage unit for projection, and is provided along a left and right side direction of the screen unit when the screen unit is pulled out downwardly of the storage unit and used. Two supporting the left and right sides of the screen part and extending the screen part in the left and right direction.
A stretching support portion comprising a set, a screen portion and a stretching support portion, respectively, a plurality of winding devices for winding separately, a storage portion for storing these, and a drawer roll for pulling out the screen portion. The extension support section is composed of a plurality of fixing sections and a plurality of extension sections, and connects the fixing section and the extension section in a predetermined order, and allows each fixing section or the extension section to bend and bend. When pulling out the screen portion stored in the storage portion, the screen portion is drawn along the left and right sides of the screen portion, one by one on the left and right sides of the screen portion, respectively. And one end thereof is supported by a fixing unit by a winding device and a drawing roll, and the fixing unit is a fixing unit of a left and right expansion support unit of the screen unit. The extension portion is held at a predetermined width, and the extending portion is held by the fixed portion, and receives a force expanding from the fixed portion to the outside of the screen by a spring force or the like, thereby making the position of the screen portion in the left-right direction movable. And a fixing portion for fixing the screen portion. The screen portion has a predetermined width on both left and right sides of the film or the sheet, and has a predetermined width, and respectively has a fixing portion of the left and right extending support portions of the screen portion. The supporting sheet to be fixed is provided integrally, and when the screen part is pulled out from the storage part, the film and the sheet of the screen part are pulled out while being fixed to the fixing part provided in the stretching support part. The take-out of the screen is connected to the end of the screen and the end of the fixing part of the stretch support, and is provided over the entire width of the screen orthogonal to the winding direction. The screen portion is stretched in the left and right directions by the stretching portions held on the fixed portions of the stretching support portions provided on both the left and right sides of the screen portion, respectively. And a portion of the film or sheet of the screen portion fixed to the fixing portion is pulled outward of the screen portion. And in the above, the support portion sheet of the screen portion is made of a magnetic material, and each fixing portion of the extension support portion is
It is characterized by attaching a magnet and holding the screen by the magnet. Further, in the above description, the stretching support portion is provided with the fixing portion and the stretching portion alternately, and at the connecting portion between the fixing portion and the stretching portion, only in the direction along the winding direction of the winding device. The connecting portion connects the fixed portion and the extension portion via a shaft, and the extension portion extends from the fixed portion to the outside of the screen by a spring force. It is characterized in that a horizontal position of the screen portion is movable along the axis upon receiving a force.

[0005]

The screen device of the present invention is constructed as described above, and is a screen device of a roll-up type using a winding mechanism based on a film or a sheet having no self-supporting state, so that an image can be projected. When set, it is possible to provide a screen device that is unlikely to generate wrinkles or looseness, and that does not warp due to shrinkage after molding even when a resin shape such as a lens is imparted to the screen. . Specifically, the extension support portion is composed of a plurality of fixed portions and a plurality of extension portions, and connects the fixed portion and the extension portion in a predetermined order to form a band that can be bent at each fixed portion or the extension portion. When pulling out the screen part stored in the storage part, along the left and right sides of the screen part, one on each side of the screen part And one end thereof is supported by a fixing portion by a winding device and a draw-out roll, and the fixing portion is configured to increase the distance between the fixing portions of the left and right expansion support portions of the screen portion. Holding the predetermined width, the stretched portion is held by the fixed portion, receives a force that spreads outward from the fixed portion by a spring force or the like, and makes the horizontal position of the screen portion movable, And su The screen portion has a fixing portion for fixing the lean portion, and the screen portion has a predetermined width on both left and right sides of the film or sheet, and a support fixed to the fixing portions of the left and right expansion support portions of the screen portion, respectively. When the screen part is pulled out from the storage part, the film and the sheet of the screen part are pulled out while being fixed to the fixing part provided in the extension support part. The take-out is performed by connecting to the tip of the screen part and the tip of the fixed part of the stretching support part, and pulling the frame part provided over the entire width of the screen orthogonal to the winding direction. The extension in the direction is performed by the extension portions held on the fixed portions of the extension support portions provided on both the left and right sides of the screen portion, respectively. By pulling the film or portion of a sheet of anchored screen portion fixing portion parts outwardly of the screen portion, which achieves this. Specifically, the support portion sheet of the screen portion is made of a magnetic material, and each fixed portion of the extension support portion is provided with a magnet, and the screen portion is held by the magnet. This makes it possible to provide a screen device that can be securely fixed with a relatively simple structure without causing wrinkles or looseness on films or sheets of the screen portion.
In addition, the extension support portion is provided with the fixed portion and the extension portion alternately, and at the connection portion between the fixed portion and the extension portion, can be folded only in a direction along the winding direction of the winding device. The connecting portion connects the fixed portion and the extending portion via an axis, and the expanding portion receives a force that expands in the outward direction of the screen from the fixing portion by a spring force, and extends along the axis to form the screen portion. Since the position in the left-right direction is movable, the structure of the extension support section is relatively simple, and the tension of the screen section is stable and reliable.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a screen device according to the present invention will be described with reference to the drawings. FIG. 1A is a schematic perspective view of the screen device of the present embodiment, and FIG. 1B is a schematic view seen from the front of the screen unit in FIG. 1 (c) (a), FIG. 1 (c) (b), FIG. 1 (c)
(C) is a partially enlarged view as seen from the A1 direction in FIG. 1 (a), an enlarged sectional view along A1-A2 in FIG. 1 (b), and an enlarged sectional view along A3-A4, respectively. FIG. 3A is a cross-sectional schematic view of the inside of the storage portion, and FIG. 3A is a plan view showing an enlarged part including the extension support portion of FIG. 1A, and FIG. FIG. 4 is a diagram for explaining the operation of the extension support unit. 1, 2, 3, and 4, 100 is a screen device, 110 is a screen unit, 111 is a film, 112 is a support sheet, 1
Reference numeral 20 denotes an extension support portion, 121 denotes a fixed portion, 122 denotes a magnet (magnet), 123 denotes an extension portion, 124 denotes a fixed portion, and 125
Is a shaft, 126 is a spring, 127 is a protrusion, 130 is a draw-out frame, 140 is a storage part, 150, 155, and 156 are winding devices, and 160 is an alignment roller. The screen device 100 of the present embodiment has a screen portion made of a non-self-supporting synthetic resin film wound up by a winding device provided in the storage portion, in a downward direction of the storage portion in order to project an image. This is a roll-up type screen device that is drawn out and used so that warpage does not occur in the screen unit 110 when an image is projected.

[0007] The screen device 100 of the present embodiment is shown in FIG.
(B), the screen unit 110 wound by the winding device 150 provided in the storage unit 140 shown in FIG.
Is used by pulling it out below the storage section 140 in order to project an image. As shown in FIG. 1, the screen section 110 and the screen section stored in the storage section 140 are drawn out and used as a screen. A stretching support portion 120, which is provided along the left and right sides of the screen portion 110, supports the left and right sides of the screen portion 110, and extends the screen portion 110 in the left and right direction; Unit 110 and extension support unit 12
2 are separately provided, and are provided with a winding device 150, 155, 156 shown in FIG. 2, a storage section 140 for storing these, and a drawer roll 130 for pulling out the screen section.

[0008] The extension support portion 120 includes a plurality of fixing portions 121.
And a plurality of extending portions 123, and the fixing portion 121 and the extending portion 123 are alternately connected, and as shown in FIG. 3, the fixing portion 121 and the extending portion 123 are connected via a shaft 125. Then, a band that can be bent at each fixed portion or the extended portion is formed, and one end thereof is supported by the fixed portion by the winding device 155 (156) and the drawer roll 130, respectively. . As shown in FIG. 1, each of the extension supporting portions 120 extends along the left and right sides of the screen
Are provided. Then, when pulling the drawing roll 130 connected to the distal end of the screen unit 110 and pulling out the extension support unit 120, the screen unit 110 is pulled out.
Along with the left and right sides of the screen unit 110, while being superposed on the screen unit 110,
Each is pulled out one by one to the left and right of the screen unit 110. As shown in FIGS. 1C and 1C, the fixing portion 121 has a magnet (magnet) 122 at least in a part thereof. In addition, the extension unit 123 includes the fixing unit 12.
1 is connected via a shaft 125, but receives a force in the direction of the shaft 125, that is, outward in the left-right direction of the screen unit 110 by a spring 126 provided on the shaft 125.

The screen section 110 is provided integrally with a supporting sheet 112 made of a magnetic material having a predetermined width on each of the left and right sides of the film 111, as shown in FIG.
As shown in (c), the magnets (magnets) 12 are attached to the fixing portions 121 of the left and right extending support portions of the screen portion 110.
2 is fixed. In this embodiment, the support sheet 112 is integrated with the screen unit 110,
They need not necessarily be integrated. In addition, support sheet 1
As for 12, in order to have a space between the left and right sides of the screen unit 110, a certain degree of rigidity suitable for this is necessary.

The take-up device 150 includes a screen unit 110
Is wound with a fixed width at one end. In the case of the present embodiment, winding is performed while maintaining the distance between the left and right supporting sheet portions of the integrated screen portion 110 at a predetermined width. . The winding device 155 (or 156) winds the stretching support unit 120, and the screen unit 11
The positions of the fixed portions 121 of the left and right extension support portions 120 are
The interval is kept at a predetermined width. And the extension support 1
As shown in FIG.
The spring 126 is wound while the length of the spring 126 is gradually shortened by a guide (not shown) of the winding device 155 (or 156). FIG. 4 shows the winding device 155.
The drawing shows the relationship between the drawing distance from (or 156) and the position of the expanding portion 123 of the expanding supporting portion 120 at that distance. The graph shows the position of the expanding portion on the left side of the screen shown in FIG. 1 shows the position of the extension part on the right side of the screen part shown in FIG. Lm is the spring 12
5 is the maximum positional deviation amount due to expansion and contraction, and Ls indicates the distance between the left and right extending portions 120 of the screen unit shown in FIG. 1 in a state where the extending and supporting unit 120 is pulled out of the storage unit 140. Further, as shown in FIG. 5A, the fixing portion 121 and the expanding portion 123 of the expanding support portion 120 can rotate about the shaft 125 in the rotation direction of the winding device. As shown in FIG. 5B, the fixing portion 120 is provided with protrusions 121A and 121B, and
Protrusions 123A and 123B may be provided on 23, and the rotation direction may be restricted to one direction according to the winding direction depending on how the protrusions are fitted.

[0011] As shown in FIG.
0 is a device for superimposing the screen portion 110 and the stretching support portion 120 from the winding device when the screen portion 110 is pulled out. The screen unit 110 and the stretching support unit 120 are separated and wound.

The drawer frame 130 is connected to the screen 1
10 and the extension support portion 120. The leading end of the screen portion 110 is positioned so that the left and right support sheets 112 have a predetermined width.
0, and a pair of two extended support portions 1
20 also supports the fixed portion 121 at the tip such that the left and right fixed portions are kept at a predetermined interval.

Next, a brief description will be given of the extension operation and the principle of the extension of the screen device of this embodiment. The screen section 110 is pulled out from the state stored in the storage section 140 by using a drawer frame 130 provided at the front end of the screen section 110. The front end of the screen section 110 and the front end of the extension support section 120 are drawn out. Since the fixing portion 121 is supported by the drawer frame 130, the extension support portion 120 is also pulled out along with the drawing of the screen portion 110. When the leading end of the stretching support portion 120 is pulled out by the draw-out frame 130, the portion of the stretching support portion 120 wound by the winding device 155 (156) moves along a guide (not shown) of the winding device. The fixing portion 121 of the extension support portion 120 is pulled out, and the position in the left-right direction is fixed at a predetermined position.
As shown in FIG. 4, the extension portion 123 of the extension support portion 120 has a spring 126 of the extension support portion 120 while its position is restricted by a guide (not shown) of the winding device.
With the force of (1), the length of the spring 126 is gradually increased, and its position in the left-right direction is changed. That is, the extension support portion 12
0 fixed portion 121 always keeps the position in the left-right direction at a predetermined position, and the winding device 155 (or 15
In the state wound in 6), as shown in FIG.
The spring 126 is in a contracted state. From this state, the spring 126 is pulled out while being held down by a guide (not shown) of the winding device so that the spring 126 gradually extends. In this embodiment, in the state shown in FIG.
10 and the stretch supporting portion 120 are overlapped by the aligning roller 160 shown in FIG.
It is drawn from 0. Therefore, in the state shown in FIG. 3B, the fixing portion 127 (shown in FIGS. 1C and 1B) of the extending portion 123 is fixed to the film 111 of the screen portion 110, and passes through the guide and is pulled out. In this state (FIG. 3A), the spring 126 extends, and as a result, the film 111 is pulled outward in the left-right direction of the screen unit. On the other hand, the extension support 120
Is fixed at a predetermined position indicated by a guide (not shown) at a predetermined position, while keeping the left and right two spaces of the screen unit 110 at a predetermined width, the supporting sheet of the screen unit 110 and the aligning roller 160. Are superimposed. The state when the screen portion 110 and the stretch supporting portion 120 are overlapped by the aligning roller 160 shown in FIG. 2 is not particularly limited to the state shown in FIG. 3B, but the stretch portion 123 is fixed. Film 111 at part 127
At least above the dotted line L1 in FIG. 4, the screen portion 110 and the extension support portion 120 are pulled from FIG.
It is necessary to pull out from the storage section 140 in a superposed state by the aligning roller 160 shown in FIG.

In this manner, the film 111 of the screen unit 110 is stretched, but it is necessary that the position of the fixing unit 121 of the stretching support unit 120 be maintained at a predetermined position. Regarding this point, in the present embodiment, the two left and right extending support portions 1 of the screen portion 110 are used.
Each of the fixing portions 121 has a frame 130 and a winding device 155 (or 1 to 2).
56), the two support members are supported so that the interval between them is a predetermined width, and the support member 120 includes a plurality of fixing portions 121 and a plurality of expansion portions 123.
And the extending portion 123 are connected alternately, and as shown in FIG.
The fact that a caterpillar-like band is formed and the support sheets 112 on the left and right sides of the screen section 110 are pulled out at both ends thereof into the frame 130 and the winding device 155,
Both supporting sheets are supported so as to have a predetermined width, the fixing portion 121 is provided with a magnet (magnet), and the supporting sheet 111 is a magnetic material. By being fixed, this is achieved, and such extension of the film 111 is enabled. It should be noted that, in order to maintain the space between the left and right support sheets of the screen unit 110, the support sheet 112 needs to have a certain degree of rigidity.

[0015]

According to the present invention, as described above, a screen device using a roll-up type screen employing a winding mechanism based on a film or sheet having no independence is set to a state where an image is projected. This makes it possible to provide a screen device that does not easily generate wrinkles or looseness and that does not warp even when a resin-made shape such as a lens is applied to the screen.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a screen device according to an embodiment.

FIG. 2 is a schematic sectional view of a storage unit.

FIG. 3 is an enlarged plan view showing a part of the extension support portion.

FIG. 4 is a diagram for explaining the operation of the extension support unit.

FIG. 5 is a view for explaining a bending operation of the extension support portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 100 Screen device 110 Screen part 111 Film 112 Supporting sheet 120 Expansion support part 121 Fixed part 122 Magnet (magnet) 123 Expansion part 124 Fixed part 125 Axis 126 Spring 127 Projection 130 Pull-out frame 140 Storage part 150, 155, 156 Winding device 160 Roller for alignment

Claims (4)

[Claims] 1. A screen section made of a non-self-supporting synthetic resin film or sheet wound by a winding device provided in the storage section is drawn downward in the storage section in order to project an image. A screen device that is provided along the left and right sides of the screen unit when the screen unit is pulled out downward from the storage unit and used to support the left and right sides of the screen unit. And a stretching support portion consisting of a set of two for stretching the screen portion in the left-right direction, a plurality of winding devices for winding the screen portion and the stretching support portion separately, and a storage device for storing these. With a storage part and a drawer roll for pulling out the screen part,
The extension support portion is composed of a plurality of fixed portions and a plurality of extension portions, and connects the fixed portion and the extension portion in a predetermined order to form a band that can be bent at each fixed portion or extension portion.
When pulling out the screen part stored in the storage part, pull out the screen part along the left and right sides of the screen part, one each on the left and right sides of the screen part, accompanying the screen part. And one end of each of the winding device and the draw-out roll is supported by a fixed portion, and the fixed portion has a predetermined width between the fixed portions of the left and right extending support portions of the screen portion. The extending portion is held by the fixing portion, receives a force expanding from the fixing portion in the outward direction of the screen, and makes the position of the screen portion in the left-right direction movable, and fixes the screen portion. The screen portion is fixed to the left and right sides of the film or sheet at a predetermined width to the fixed portions of the left and right expansion support portions of the screen portion, respectively. When the screen part is pulled out from the storage part, the film and the sheet of the screen part are pulled out while being fixed to the fixing part provided in the extension support part. The take-out is performed by connecting the front end of the screen portion and the front end of the fixed portion of the stretching support portion, and pulling the frame portion provided over the entire width of the screen orthogonal to the winding direction, and The expansion in the left and right direction is performed by the expansion parts held on the fixed parts of the expansion support parts provided on both the left and right sides of the screen part, respectively.
A screen device characterized in that each of the screen devices is performed by pulling a part of the film or sheet of the screen portion fixed to the fixing portion of the extending portion in the outward direction of the screen portion. 2. The screen according to claim 1, wherein the support portion sheet of the screen portion is made of a magnetic material, and each fixing portion of the extension support portion is provided with a magnet, and the magnet holds the screen portion. A screen device, characterized in that: 3. The winding support device according to claim 1, wherein the stretching support portion is provided with fixing portions and stretching portions alternately, and a winding portion of the winding device is provided at a connecting portion between the fixing portion and the stretching portion. A screen device characterized by being tiltable only in a direction along the direction. 4. The connecting portion according to claim 3, wherein the connecting portion connects the fixed portion and the extending portion via a shaft, and the extending portion includes
A screen device which receives a force that expands in the outer direction of the screen by a spring force from a fixed portion, and makes the position of the screen portion in the left-right direction movable along the axis.