JP2000330208A - Folding type large-sized screen device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a screen device which has excellent flatness like that of a stretch type screen, is small in a housing space like a roll screen type, allows the constitution of an ultra-large-sized screen, allows the constitution of a screen exclusive of a rectangular screen like a dome shape of a semicircular shape, etc., and is capable of enhancing the stage effect of videos in an event hall, etc. SOLUTION: This large-sized screen device of a folding type is constituted by forming the screen 1 to be hung and supported between a ceiling and a floor so as to have flexibility, fixing transverse supporting rod bodies (2) at plural points apart suitable intervals in a vertical direction in a developed state on the rear surface side of the screen, connecting linkage wires 5 of lengths corresponding to the spacings described above between the adjacent upper and lower transverse supporting rod bodies, connecting lifting wires 7 continuous with a lifting drive section (9) to the transverse supporting rod bodies existing in the uppermost stage or lowermost stage and constituting a housing section of the screen on the floor side or the ceiling side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable large screen device installed in a multipurpose facility for performing various events and the like.

[0002]

2. Description of the Related Art A screen installed in a multipurpose facility for holding various events or the like must be configured to be able to be stored when not in use. Conventionally, a screen is wound around a shaft as shown in FIG. As shown in FIG. 9, there are a roll screen type and a stuck screen type in which the screen is stored while being expanded.

[0003] The roll screen type has an advantage that a storage space is small because the screen is wound around a shaft and stored, and there are various types as shown in FIG. That is, (a) shows an upper shaft winding type in which the screen is wound on an upper shaft and stored on the ceiling side, and (b) shows a lower shaft in which the screen is wound on a lower shaft and stored on the ceiling. The winding type and the type shown in (C) are of a lower shaft winding type in which the screen is wound on a lower shaft and stored under the floor such as a stage.

[0004] On the other hand, the inlaid screen type is excellent in flatness because the flexible screen is held in an expanded state by the inlaid frame, and depends on the strength of the inlaid frame. There is an advantage that the screen can be formed not only in a rectangular shape but also in an arc shape such as a semicircle, and there are various types as shown in FIG. That is, the one shown in (a) is a flip-up type in which the screen is unfolded and flipped up and stored on the ceiling side, and the one shown in (b) is an unfolding type in which the screen is unfolded and raised and stored on the ceiling side. (C) is a protruding type which is lowered while the screen is unfolded and stored under the floor such as a stage.

[0005]

However, the conventional types described above have the following problems, respectively. (1) Roll screen type a. Because the winding shaft has a configuration of both ends supported, if the width of the screen is too large, the shaft will bend,
Wrinkles are generated on the screen during winding, and the screen width is limited to around 10 m. b. It is extremely difficult to configure the entire shape of the screen other than a rectangle, for example, to configure an arched shape such as a semicircle in accordance with the ceiling shape of a multipurpose facility. (2) Entrance screen type a. Since the screen is stored with the screen unfolded, a storage space corresponding to the size of the screen is required. From this viewpoint, it is difficult to configure a super-large screen. An object of the present invention is to solve the above problems.

[0006]

In order to solve the above-mentioned problems, according to the present invention, in a screen suspended and supported between a ceiling and a floor, the screen has a flexible structure, and the screen is in a developed state on the back side. In the above, the horizontal support rods are fixed at a plurality of locations appropriately spaced in the vertical direction, a connecting wire having a length corresponding to the interval is connected between adjacent upper and lower horizontal support rods, and The present invention proposes a folding large screen device in which an elevating wire connected to an elevating drive unit is connected to the lower horizontal support bar, and a screen storage unit is formed on the floor side or the ceiling side.

According to the present invention, in the above configuration,
It is proposed to install the lifting drive unit on the ceiling side or the floor side.

In the present invention described above, the plurality of lateral support rods are
By holding the screen and the connecting wire and the elevating wire at predetermined positions at predetermined intervals, the flexible screen can be developed and held in a flat state,
In this way, it can be used at a proper position between the ceiling and the floor of a multipurpose facility or the like. In the use state, the screen is maintained in a developed state by the plurality of lateral support rods, so that the screen has good flatness, and the load of the screen and the plurality of lateral support rods is distributed to the screen and the connecting wire, so that the screen is The screen can be held in an expanded state with an appropriate tensile load without giving an excessive tensile load to the screen. On the other hand, the screen is stored in a state in which the plurality of horizontal support rods are all lowered by the lifting wire connected to at least the uppermost horizontal support rod, and are folded in the storage portion configured on the floor side, or at least the lowermost row. Can be all lifted by the lifting wire connected to the horizontal support rod body, and can be stored in a folded state in the storage section formed on the ceiling side.

[0009]

Next, a first embodiment of the present invention will be described with reference to FIGS. FIGS. 1 and 2 are schematic diagrams showing the use state and the storage state of the screen as viewed from the back side of the screen, respectively. FIG. 3 is a diagram showing a temporary point in the process of shifting from the use state to the storage state or from the storage state to the use state. FIG. 4 is a schematic partial longitudinal sectional view, FIG. 4 is an enlarged view of a part of FIG. 3, and FIG. 5 is a schematic longitudinal sectional view showing a process of shifting from a stored state to a used state. In these figures, reference numeral 1 denotes a screen, and this screen 1 is formed in a semicircular arch shape by a flexible material. It is preferable to select a material that forms the screen 1 from a material that can display an image, has appropriate rigidity and flexibility, and does not easily cause folding wrinkles. Screen 1
In the unfolded state, the lateral support rods 2 (2a, 2b, 2) formed of a pipe member or the like are provided at a plurality of locations appropriately spaced in the vertical direction.
c, 2d,...) are fixed. As shown in the figure, in this embodiment, the horizontal support rods 2 are composed of four upper and lower ends of the screen 1 and two intermediate rods. Although the length corresponds to the width, the number, length, cross-sectional shape and the like of the lateral support rods 2 can be appropriately designed according to the size and shape of the screen 1. The method of fixing the lateral support rod 2 to the screen 1 is appropriate. In this embodiment, as shown in FIGS.
a, and a mounting groove 4b having a narrowed opening 4a is formed in the lateral support bar 2, and the width of the opening 3a is set in a state where the cylindrical portion 3a is inserted into the mounting groove 4b from the opening 4a. This is a configuration in which a fixed rod 3b having a larger diameter than the fixed rod 3b is inserted into the cylindrical portion 3a to be fixed. The space between adjacent upper and lower horizontal support rods 2a, 2b; 2b, 2c; 2c, 2d, that is, the upper and lower horizontal support rods 2a, 2b; 2c,
The connecting wire 5 having a length corresponding to the interval between 2d is connected. In this embodiment, the connecting wire 5 is
As shown in FIG. 3, the horizontal support rods 2 are connected to each other by protrusions 6 provided on the side opposite to the mounting grooves 4b for fixing the screen 1. Except for the horizontal support bar 2d corresponding to the lower end of the screen 1, the lifting wires 7 (7a, 7b, 7c,...) Are connected at both ends to the horizontal support bars 2a, 2b, 2c above it. Each lifting wire 7 is connected to a lifting drive unit 9 (9a, 9b, 9c,...) Such as a winch via a pulley 8. FIG.
In the figure, reference numeral 10 denotes a ceiling, 11 denotes a floor such as a stage, etc.
A pit is formed on one side as a storage section 12 for the screen 1, and a receiving stand 13 for the screen 1 is provided in the pit. When the storage portion 12 of the screen 1 is provided on the floor 11 side, the lifting wire 7 may be connected to at least the uppermost horizontal support rod 2a. When provided on the side, the lifting wire 7 may be connected to at least the lowermost horizontal support rod 2d as shown in FIG. 7 described later.

The operation of the above configuration will be described. First, FIG. 5A and FIG. 2 show all the lateral support rods 2a, 2a.
This shows a state in which the screen 1 is stored in the storage section 12 by lowering b, 2c, 2d. In this state, the screen 1 is folded and all the lateral support rods 2a, 2b, 2
c and 2d are stored in the storage section 12
Is housed inside. Here, when the screen 1 is used, first, the elevating drive unit 9a is operated to wind up the elevating wire 7a, and the uppermost horizontal support bar 2a is raised. In this operation, when the upper end of the screen 1 rises together with the lateral support rods 2a and the space between the screen 1 and the lower lateral support rods 2b becomes a predetermined distance, as shown in FIG. 5B and FIG. The portion between the horizontal support rods 2a and 2b is expanded to become a plane. In this state, the horizontal support rods 2a, 2b
The connection wire 5 between them is also stretched, and in this state, the load between the lateral support rods 2a and 2b is dispersed and supported by the screen 1 and the connection wire 5. FIG.
When the state shown in FIG. 3 (b) and FIG.
While the ascending operation of “a” is continued, the elevating drive unit 9b is operated to wind up the elevating wire 7b so that the horizontal support rod 2
b is raised. In this operation, while the portion between the horizontal support bars 2a and 2b of the screen 1 is maintained in an expanded state, the portion between the horizontal support bars 2b and 2c is gradually expanded. As shown in c), the screen 1 has a plane portion between the horizontal support rods 2a and 2c. When the state shown in FIG. 5C is reached, the lateral support rods 2a, 2b
By operating the lifting / lowering driving unit 9c and winding the lifting / lowering wire 7c while continuing the lifting operation of the horizontal support rod 2
Increase c. In this operation, while the portion between the horizontal support bars 2a and 2c of the screen 1 is maintained in an expanded state, the portion between the horizontal support bars 2c and 2d is gradually expanded. Becomes a plane.
Thereafter, when the screen 1 is further raised appropriately, the entire screen 1 is positioned at a predetermined position between the floor 11 and the ceiling 10 in a planar state, and the screen 1 is used as shown in FIG. 5D and FIG.

In such a use state, the lifting wires 7b, 7c of the horizontal support rods 2b, 2c are pulled by the tension of the screen 1 between the horizontal support rods 2a, 2b and between the horizontal support rods 2b, 2c. The tension is adjusted so that the load is sufficient to unfold the parts into a plane, but not too large, so that the respective lateral support bars 2b, 2b,
Support 2c. By doing so, the entire load of the screen 1 including the screen 1 itself and the horizontal support bar 2 is dispersedly suspended and supported by the lifting wires 7a, 7b, 7c connected to the lifting drive units 9a, 9b, 9c. . In addition, the adjustment of the tension ensures that the screen 1 is entirely flat when in use and does not receive an excessive tensile load. Further, since the connecting wires 5 are connected between the upper and lower horizontal supporting rods 2a, 2b; 2b, 2c; 2c, 2d, each connecting wire 5 reduces the tensile load to be applied to the screen 1 and also respectively. Of the horizontal support rods 2b, 2c, 2d. As shown in FIG. 3, the connecting wires 5 are connected to the respective lateral support rods 2 on the side opposite to the side where the screen 1 is fixed.
Are connected to each other, the rotation of the horizontal support bar 2 due to the moment can be prevented, and the deterioration of the flatness of the screen 1 due to the rotation can be prevented. The number of hanging points by the lifting wire 7 and the strength of the lateral support bar 2 can be appropriately set in consideration of the size, weight, and the like of the entire screen 1.

As described above, the screen 1 can be made very large. The shape is not only rectangular, but also
For example, an appropriate shape such as a semicircular arch shape as shown in the figure can be adopted in accordance with the ceiling of the stage of the multipurpose facility. With such a shape, for example, when projecting a high-definition size image, it is possible to make the screen larger than a normal rectangular screen of a television size. Also,
By projecting the trimmed image on the full screen 1, the effect of the event is enhanced. The screen 1 can also be used as a horizontal curtain. In addition, by adopting a light-transmissive material as the material of the screen 1, it is possible to attract an event visitor on the back side of the screen 1 by utilizing the fact that an inverted image can be viewed from the back side of the screen 1. It is possible.

In order to shift from the use state shown in FIGS. 1 and 5 (d) to the housed state, the screen 1 is moved by operating the lifting / lowering drive units 9a, 9b, 9c in the reverse order to the above. The state shown in FIG. 5D can be sequentially shifted to the housed state shown in FIGS. 5A and 2 through the states shown in FIGS. 5C and 5B. Note that the order described above is merely an example, and the transition from the use state to the storage state and from the storage state to the use state may be performed in addition to, for example, all of the elevation drive units 9a
9b and 9c are simultaneously driven to raise and lower wires 7a and 7c.
Other operating methods, such as operating each of b and 7c to wind or rewind by a preset length, can also be applied.

In the embodiment described above, the elevation drive unit 9 is installed on the ceiling 10 side.
As shown by a two-dot chain line, the elevation drive unit 9 can be installed on the floor 11 side. Further, in the embodiment described above, the storage unit 12 is configured on the floor 11 side.
As in the second embodiment shown in FIG. 7, it can be configured on the ceiling 10 side. In the configuration shown in FIGS. 6 and 7, the storage section 12 of the screen 1 is provided on the ceiling 10 side, and in this configuration, as described above, the lifting wire 7
(7d) may be connected to the lowermost horizontal support rod 2d as indicated by reference numeral 14 in the drawing. 6 and 7, the same components as those in FIGS. 1 to 5 are denoted by the same reference numerals, and redundant description will be omitted.

On the other hand, in the first and second embodiments,
Although not shown, an appropriate number of guide wires are installed from the ceiling 10 side to the floor 11 side for the purpose of preventing the screen 1 from shaking in a use state or the like.
Can be configured to move up and down along a guide wire.

[0016]

As described above, the present invention has the following effects. a. Excellent flatness similar to the screen type. b. The storage space is small like the roll screen type. c. It is possible to construct a very large screen. d. A screen other than a rectangle can be formed, such as a semicircular dome shape. e. At an event venue or the like, the effect of producing a video can be enhanced.

[Brief description of the drawings]

FIG. 1 is a schematic rear view showing an embodiment of a screen device of the present invention in a state where a screen is used.

FIG. 2 is a schematic rear view showing the embodiment of the screen device of the present invention in a state where the screen is stored.

FIG. 3 is a schematic partial vertical sectional view at a temporary point in a process of shifting the screen from a stored state to a used state or from a used state to a stored state.

FIG. 4 is an enlarged view of a part of FIG. 3;

FIG. 5 is a schematic vertical sectional view showing a process of shifting from a stored state to a used state.

FIG. 6 is a schematic rear view showing another embodiment of the screen device of the present invention in a state where the screen is stored.

FIG. 7 is a schematic view showing a stored state (a) and a used state (b) of the screen in the device of another embodiment shown in FIG.

FIG. 8 is a schematic view showing an example of a conventional roll screen type screen device.

FIG. 9 is a schematic view showing an example of a conventional screen device of a squeezing screen type.

[Explanation of symbols]

 1 Screen 2 (2a, 2b, 2c, 2d,) Horizontal support rod 3a Cylindrical part 3b Support rod 4a Opening 4b Mounting groove 5 Connecting wire 6 Projection 7 (7a, 7b, 7c) Elevating wire 8 Pulley 9 (9a) , 9b, 9c) lifting drive unit 10 ceiling 11 floor 12 storage unit 13 cradle 14 connection part

Claims (4)

[Claims] 1. A screen which is suspended and supported between a ceiling and a floor, wherein the screen has a flexible structure, and laterally supporting rods are provided on a rear surface side of the screen at a plurality of positions which are appropriately spaced apart in a vertical direction in a developed state. And connecting a connecting wire having a length corresponding to the distance between adjacent upper and lower horizontal support rods, and connecting a lifting wire connected to a lifting drive unit to at least the uppermost horizontal support rod. Foldable large screen device characterized by comprising a screen storage section on the floor side 2. A screen which is suspended and supported between a ceiling and a floor, wherein the screen has flexibility, and a plurality of horizontal support rods are provided on a rear surface side of the screen at a plurality of locations which are appropriately spaced apart in a vertical direction in a developed state. And connecting a connecting wire having a length corresponding to the distance between adjacent upper and lower horizontal support rods, and connecting a lifting wire connected to a lifting drive unit to at least the lowermost horizontal support rod. , A folding large screen device characterized by comprising a screen storage portion on the ceiling side 3. The folding large screen device according to claim 1, wherein the lifting drive unit is installed on the ceiling side. 4. The foldable large screen device according to claim 1, wherein the lifting drive unit is installed on the floor side.