JP3099301U - Membrane extension structure - Google Patents

Abstract

A projection projection screen or a projection screen, which hardly bends, can cope with expansion and contraction of a film body, can cope with a film body of a horizontally or vertically long screen type panel, and can be used as a self-standing stand structure. To provide a display panel and signboard sheet film extension structure.
A sheet-like film body (1) whose ends are fitted into a pair of frame members (3, 3 ') is stretched by frame stand members (5, 5'), one side being the other side. In the case where the length is sufficiently longer, in order to more securely stretch the membrane, the first and second sections are divided as shown in the figure, and each of the sections has a pair of frame stand frame members 5, 5 ', And the film body 1 is stretched by standing up. The frame frame member 3 and the frame stand frame member 5 have a substantially semicircular cross section, and have a cylindrical shape when folded, thereby preventing the film body from being creased during winding and storage.
[Selection diagram] Fig. 1

Description

(4) The present invention relates to a film structure which can be wound around a frame such as a projection screen or a sheet used as an exhibition panel or a signboard.

Conventionally, a projection screen such as a projector has been used in a structure in which the projection screen is wound around a storage tube and stored, and is pulled downward by the weight of the storage tube each time it is used. This structure has a drawback in that when stored for a long period of time, the sheet member bends and the screen is not sufficiently stretched to be flat. In order to solve this problem, there has been proposed a structure in which the upper and lower sides of the screen are stretched by vertical frame members (Patent Document 1).

FIG. 12 shows the screen extending structure of Patent Document 1. In the screen extending structure shown in FIG. 12, a pivot member 4 is provided near the opposite ends on the back surfaces of the frame members 3 and 3 ', and a frame stand frame member 5 made of an aluminum alloy or the like is provided here. The rotating shaft 5a at one end of the frame frame 5 'is pivotally supported, and the frame frame members 5 and 5' are folded along the back surfaces of the frame frames 3 and 3 'in the longitudinal direction to be housed. ing. In use, the frame frame members 5 and 5 'are erected, and the frame frame members 5 and 5' are freely attached to the engaging portions 6 and 6 'near the ends of the opposite frame frame members. The ends are locked, and a film 1 such as a screen or a display sheet is stretched.

However, the dimensions of the members of the film body 1 have a problem that the film body 1 expands and contracts due to a temperature change during manufacturing and use, and the film body 1 is stretched every time the film is stretched, and the stretching is loosened. In addition, if the film body 1 is wound around the frame member 3 during storage, there is a problem that the film body 1 (sheet 1) is creased along the corner of the frame member 3.

In addition, such a screen has been required to be used as an exhibition panel or a temporary indoor or outdoor signage because it is convenient to carry. However, a screen of a desired length is required to be used as a vertical signage. It was difficult to set up. In addition, there is a problem that the display panel cannot stand on a wall or a standing tree and stand alone.

Japanese Utility Model Registration No. 3086722 (pages 2, 3, 4 and 1, 2, 3, 4)

The present invention has been made in view of the above-described problems, and has an outer peripheral shape of a film frame stretching member for storing a film body such as a projection screen or an exhibition panel or a signboard sheet for storing, storing, or carrying the film. A major problem is to provide a tension structure that has a circular structure including a frame stand frame member and that is less likely to cause a fold habit of the film body portion when the film body is stored or carried in a wound state. is there.

(4) Further, the present invention provides a tensioning structure capable of coping with expansion and contraction of the film body and adding an extension mechanism of the frame member. In addition, the present invention provides a stretched structure that can handle a horizontally or vertically long screen type panel film. Still further, the present invention provides a stand structure which can be self-supported when the above-mentioned film body extending structure is vertically installed, or a stand type structure in which a plurality of sets of the vertically installed film body extending structures are combined and used. Aim.

Furthermore, it is an object of the present invention to provide a structure for extending not only vertically but also horizontally to the frame member of the curtain body.

In order to solve the above-mentioned problem, the film body stretching structure of the present invention is characterized in that elongate members having linear rigidity are attached to both ends of a film body including at least a screen or display object, and the parallel elongate members are attached. In order to stretch the film body in a direction perpendicular to the member, a film body stretching structure in which the elongated members are respectively mounted on fitting grooves formed on the front side of a pair of frame members,
Each of the frame members has a first semi-circular or larger circular first outer peripheral cross section with the front side being a semicircle or more. Is provided parallel to the center axis of the circle on the semicircle or more of the circumference,
Further, each frame member is provided on the rear side thereof near the opposite ends of the pair of frame members so as to pivotally support one end of a frame stand frame member for film stretching and rotate as a fulcrum. Support members, and
An engaging member is provided on the facing frame member, and an engaging member is provided to stop the free end of the upright frame member.
When not in use, the frame stand frame member is rotated by the pivot support member on the back side of the frame frame member, is folded along the central axis, and the outer peripheral cross section of the two members in the folded state is In order to form a circular shape, the back side has a second semicircular shape formed into a substantially semicircular or more circular shape having a semicircular or more circular shape,
When the frame frame member is used, the frame frame member is rotated by the pivot support member with respect to each frame frame member, and stands upright, and the free ends of the frame frame members are positioned at the positions of the frame frame members facing each other. It has a structure that is stopped by the engaging member provided in advance,
When stored and carried, the membrane is wound around a folded frame member having a circular outer periphery, and has a structure that does not easily cause a fold habit.

Further, at both ends of the film body including at least a screen or display, to attach an elongated member having linear rigidity, respectively, to stretch the film body in the vertical direction to the parallel elongated members, A film body stretching structure in which the elongated members are respectively attached to fitting grooves formed on the front side of a pair of frame members,
Each of the frame members has a first semicircular or larger circular first outer peripheral cross section, the front side of which is a semicircle or more. Is provided parallel to the center axis of the circle on the semicircle or more of the circumference,
The frame member is divided into a plurality of n sections at an arbitrary interval length from one end thereof, and the frame frame member forming a pair with the frame frame member is similarly divided into a plurality of n sections from the one end in accordance with the interval length. The pair of frame members are divided into a plurality of continuous n pairs of sections,
On the rear side of the frame member, one end of the frame stand frame member for film extension is pivoted near the opposite ends of the frame member in each of the plurality of n pairs of sections. And a pivot member for rotating as a fulcrum, and
An engaging member is provided for each section, provided on the facing frame member, and provided for stopping the free end of the upright frame member.
When not in use, the frame stand frame member is rotated by the pivot support member on the back side of the frame frame member for each section, is folded along the central axis, and the folded state of the two members Has a second outer peripheral cross section formed in a substantially semicircular or more circular shape in which the back side is a semicircle or more, so that the outer peripheral cross section forms a circular shape,
When the frame frame member is used, the frame frame member is rotated by the pivoting member with respect to each frame frame member for each section, and stands upright, and the free ends of the frame frame members are opposed to the respective frame frames. It has a structure in which the system is stopped by the engaging member provided in advance at the position of the frame member,
When stored and carried, the membrane is wound around a folded frame member having a circular outer periphery, so that the film is less likely to be folded.

Further, the frame stand frame member includes a coupling recess for coupling a long extension mechanism that extends the frame stand frame to a free end portion thereof,
The elongating mechanism is configured to irreversibly move the expanding member in the expanding direction, the connecting protrusion being inserted into the connecting concave portion to be connected, an expanding member movable in the longitudinal direction of the frame stand member, and the expanding member irreversibly. It is characterized by comprising a worm gear and a pivot metal fitting for rotating the worm gear.

Further, the frame stand frame member includes a coupling recess for coupling a long extension mechanism that extends the frame stand frame to a free end portion thereof,
The elongating mechanism includes a coupling protrusion inserted into the coupling recess and coupled with the coupling member, an extension member movable in a longitudinal direction of the frame member, and a spring member for applying pressure in a direction to expand the extension member. And characterized by the following.

Further, the pair of frame members is vertically arranged, a portion having no film body is provided for a predetermined length below each member, and fixed to the lower ends of the frame members by screws. A stand member that enables the frame member to stand alone.

Further, the film body is stretched, and a plurality of pairs of frame members are vertically arranged, and one frame member and another pair adjacent to each other are positioned at the upper / lower positions of each member. In order to be able to connect with one frame frame member by a bonding sheet, each of the frame frame members is provided with a connecting sheet fixing member provided with a screw hole at an upper end and / or a lower end portion for screwing both ends of the connecting sheet. It is characterized by the following.

Further, at least a pair of curtain end holes are provided at the same relative positions of both ends of the film body in the vertical direction with respect to both ends of the film body in the horizontal direction to which the elongated member is attached, and at least one pair of curtain end holes is provided. It is characterized by further comprising a horizontal curtain extending structure for extending the curtain toward the outside of the curtain in the horizontal direction at each edge portion by the end holes.

In addition, the horizontal curtain body extending structure includes a pair of a pair of screws in which the projections of the projection mounting brackets pass through the holes from the front side of the curtain body and further through the receiving holes of the receiving hole mounting brackets. Bush type mounting bracket is provided,
When the frame stand frame member is used, each frame stand frame member located on the both sides located at the minimum distance to the curtain end hole portion has the frame member penetrated along the longitudinal frame axis. At least one frame moving bracket formed movably is provided,
Further, the receiving hole mounting bracket is provided with a projecting rod receiving hole for receiving a projecting rod tip for extending the curtain horizontally.
On the other hand, the frame moving bracket is provided with a rod push hole for moving the end, which is the other end of the rod, horizontally by a push screw,
Insert the tip of the extension rod into each of the extension rod receiving holes of the receiving hole mounting bracket, move the frame moving bracket of the frame stand frame member, and insert the rear end of the extension rod into the extension rod pressing hole. The structure is provided with a mechanism having a mechanism in which each of the curtain end holes is pushed outward in the horizontal direction of the curtain by the push screw in a state where the extension rod is in the horizontal direction.

に よ According to the membrane stretching structure of the present invention, the following effects are exhibited. That is, when the frame stand member on which the film body is stretched is folded when not in use with respect to a pair of frame frame members which support and spread both ends of the film body, the outer peripheral cross section is formed in a circular shape (cylindrical). Therefore, even when the film is stored / preserved or packed / carried, it does not cause a habit such as crease wrinkles.

膜 Furthermore, by adding an extension mechanism to the frame stand frame member, the membrane can be adjusted without loosening. For this reason, it is possible to cope with incomplete installation due to a change in temperature and elongation of a film body due to a change with time. Furthermore, a mechanism for extending not only in the horizontal direction but also in the vertical direction with respect to the frame member is provided, and the curtain body can be extended on both the horizontal and vertical sides to form a surface without wrinkles and distortion. .

Also, by arranging the frame stand frame member for each of the plurality of sections, even if the film body has one long side, the film body can be uniformly stretched. Therefore, it can be used not only as a horizontal screen but also as a large display panel or signboard.

Furthermore, by attaching a stand member, it is possible to have a vertically standing self-standing structure. Further, by combining a plurality of sets of the film body extending structures, a self-standing type can be obtained. For this reason, if used as a standing panel for an exhibition or the like, it is possible to provide an exhibition panel that can be easily carried in and removed after the exhibition ends.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram showing the film body stretching structure 100 of the present invention, showing the back side after stretching.

Here, reference numeral 1 denotes a sheet-like film body for a screen or display panel or signboard, and 3 and 3 ′ denote a pair of frame members.

The front side of the film body 1 is the back side of the paper surface in FIG. 1, and the elongated members 2 and 2 ′ having linear rigidity attached to both ends of the film body 1 are fitted with the frame members 3 and 3 ′. The state of being inserted into the grooves 3m, 3m 'is not visible.

FIG. 3 shows the elongated members 2, 2 'inserted into the fitting grooves 3m, 3m'.

# 5 and 5 ′ are a pair of frame stand members for stretching the film body 1.

In the embodiment of FIG. 1 of the present invention, when one side of the rectangle of the membrane is sufficiently longer than the other side, the first and second sections are divided as shown in FIG. In this embodiment, a pair of frame stand members 5, 5 'is formed for each section, and the film body 1 is stretched by standing up.

# 4 and 4 'are pivotal support members for supporting the rotating shaft fulcrum ends 5a of the frame stand members 5 and 5' between the frame members 3 and 3 '.

The pivot members 4, 4 'are screwed to the screw receivers 3x, 3x' of the frame members 3, 3 'with the screws 9 with the rotation shaft fulcrum end 5a of the frame stand members 5, 5' interposed therebetween. . This state is illustrated in FIG.

Nos. 6, 6 'are engaging members for stopping the free ends 5b of the frame members 5, 5' between the frame members 3, 3 '.

係 合 The engaging members 6, 6 'are screwed to the screw receivers 3x, 3x' of the frame members 3, 3 'with the screws 9 with the free ends 5b of the frame members 5, 5' interposed therebetween. This state is illustrated in FIG.

断面 A cross section ZZ of the frame stand frame members 5 and 5 ′ is shown in the lower right of FIG. Note that FIG. 3C shows a cross section taken along line XX of FIG. Further, the frame stand members 5, 5 'shown in FIG. 3 (c) show the outer peripheral surface.

膜 The film body stretching structure after stretching has been described with reference to FIG. 1, but the film body stretching structure 100 before stretching with the frame stand frame member will now be described with reference to FIG. 2. FIG. 2 shows a state in which the frame stand members 5, 5 'are folded in parallel to the back side of the frame members 3, 3', and the film body is stretched from an unused state to an expanded state, A state in which the free end 5b is separated from the engaging members 6, 6 'with the frame stand frame members 5, 5' sandwiched between the pivotal support members 4, 4 'as the fulcrum of the rotation support shaft 5a is shown. FIG. 3A shows an XX cross section in an initial state when not used.

In the unused state shown in FIG. 3 (a), for storage / packing or carrying / transportation, the substantially semicircular frame members 3, 3 'having the first cross section have substantially semicircular shapes each having the second cross section. FIG. 3 (d) shows a state in which the frame members 5, 5 'are folded, their combined outer peripheral shape is circular, and the membrane 1 is wound around the circular outer periphery.

FIG. 4 is an enlarged view showing that the combined outer peripheral shape is circular.

構造 With such a structure, the film body 1 can be compactly wound and housed without causing a fold habit. Further, the film body 1 can be easily packed without damaging it.

1 and 2 show the embodiment in the case of the horizontally long film body 1, but the present invention does not divide the sections, that is, the case where the whole is one section and the frame stand frame member is a pair. Of course, it may be.

FIG. 5 is a diagram showing the elongating mechanism 20 of the frame stand frame members 5 and 5 ′. The film body 1 cannot avoid a certain degree of expansion and contraction depending on the temperature at the time of manufacturing, and it is difficult to finish the film body to strict dimensions. In addition, the length may increase due to aging or the number of times of use of the extension. Due to the change, the length of the frame frame may be insufficient, and the film body may be loosened. An extension mechanism of the frame stand frame member that can cope with such expansion and contraction of the film body is shown.

On the free end side of the frame stand frame members 5 and 5 ′, a coupling concave portion 22 is provided. On the other hand, the long extension mechanism 20 includes a coupling projection portion 21 that can be inserted and connected to the coupling concave portion 22. , An eccentric worm gear 24 for irreversibly moving the expanding member 23 in the expanding direction, and a rotating bracket for rotating the eccentric worm gear 24 29.

The screw 9 is fixed to the screw receiving portions 3x, 3x 'from the engaging members 6, 6' through the holes 25. When the rotary fitting 29 is inserted into the eccentric worm gear 24 and rotated, the expansion member 23 is pushed out by the eccentric worm gear 24, the frame stand frame member is elongated, and the film body 1 is further stretched and adjusted.

FIG. 6 shows another embodiment of the elongating mechanism 30 of the frame stand members 5, 5 '. The coupling recess 22 and the coupling projection 21 have the same structure as the elongated mechanism 20 in FIG. The long extension mechanism 30 includes an extension member 33 that is movable in the longitudinal direction of the connecting projection 21 and the frame stand frame member 5, and a spring member 34 that applies pressure in a direction to expand the extension member 33. . The expansion member 33 has a hole 35 for fixing the screw 9 to the screw receiving portions 3x, 3x 'through the screw 9.

FIG. 7 shows a portion where the film body 1 is not provided with a predetermined length below each frame member so that the pair of frame members 5 and 5 ′ can be placed vertically and used as an exhibition panel or a signboard. The stand member 70 is fixed to the lower end portions of these frame members by screwing, so that the pair of frame members 5, 5 'can be self-standing.

FIG. 8 shows a plurality of sets of a pair of frame members 3, 3 'in which the film body 1 is adjusted. And other sets of adjacent frame members 3 ′ are provided with connecting sheet fixing members 99, 99 for connecting with the connecting sheet 90.

The outer peripheral cross section when the connecting sheet fixing members 99, 99 are mounted on the frame members 3, 3 'is configured to be circular.

On the other hand, the adjacent members 3 and 3 may be connected to the lower side of each member 3 and 3 ′ with a connecting sheet in the same structure as the upper side, but as shown in FIG. 3, 3 'may be connected by a connecting sheet 80 using connecting sheet fixing members 89, 89. In this case, as shown in FIG. 8, it is convenient to use a self-standing stand type in which the film body 1 is on the upper side and the film body 1 is not on the lower side.

FIG. 8 shows the embodiment of the four sets of frame members 3 and 3 '. However, if two or three sets are joined at an angle (30 to 150 degrees), they can be made independent.

FIG. 9 shows an embodiment of the vertical and horizontal curtain body extending structure 200 of the present invention. Although the curtain body extending structure 100 in FIG. 1 is a curtain body extending structure only in the vertical direction, FIG. 9 is a structure further provided with a horizontal curtain extending mechanism. 10 and 11 are explanatory views of the detailed structure of the rear part. 9 and 10, the same reference numerals as those in FIG. 1 denote the same functions, and a description thereof will be omitted.

Here, reference numerals 5x and 5x 'denote frame moving brackets, each of which slightly rotates the rotation shaft fulcrum end 5a of the frame stand frame members 5 and 5' as shown in FIG. The frame stand members 5 and 5 'are made to penetrate through the center holes 5b to 5x and 5x' so that they can be used. In this embodiment, the frame moving metal fittings 5x are arranged at two places. However, a plurality of frame moving metal fittings 5x may be provided according to the length of the frame stand frame member 5.

Reference numerals 5y and 5y 'denote extension bars, and 5w and 5w' are slidable at one end (hereinafter referred to as a rear end) for applying a horizontal extension pressure to the extension bars 5y and 5y '. This is a support rod push hole supported by

Reference numerals 5z and 5z 'denote push screws. The push screws 5z and 5z' push out the extension rods 5y and 5y 'as shown in FIG. 11, and the receiving ends into which the tips of the extension rods 5y and 5y' are inserted. The tab 1 is extended in the horizontal direction by pushing the extension rod receiving hole 10d of the hole mounting bracket 10b to expand the curtain end hole of the curtain 1 outward.

The second outer peripheral sections of the frame stand frame members 5 and 5 'individually show a substantially 1/4 circular shape as shown in FIGS. 10 and 11, and the frame stand frame members 5, 5' ′ Is folded, and the outer cross sections of the two members 3 (3 ′) and 5 (5 ′) in the folded state are formed in a circular shape. That is, in the embodiment shown in FIGS. 9 to 11, the first outer peripheral cross section of the frame members 3, 3 'has a substantially 3/4 circular shape.

Hereinafter, a mechanism for extending the curtain 1 in the vertical and horizontal directions will be described in detail. As shown in FIG. 9, firstly, the frame frame members 3, 3 'are respectively engaged with the frame frame free end 5b with the frame frame rotation shaft fulcrum end 5a supported by the pivot members 4, 4' as the fulcrum. 6 and 6 ', the curtain body 1 is stretched in the vertical direction.

Next, as shown in FIG. 10, the projection of the projection mounting bracket 10 a is inserted into the curtain end hole 1 a from the front side of the curtain 1, and further inserted into the receiving hole arranged on the back side of the curtain 1. Then, the bush type mounting bracket 10 is formed by fixing with the screws 10c. In FIG. 10, the mounting state is shown at four locations.

Before the vertical stretching, two frame moving brackets 5x and 5x 'each having a quarter-circular hole are already inserted into the frame stand frame members 5 and 5', respectively. The frame moving brackets 5x, 5x 'are moved to correspond to the four bush-type mounting brackets 10 so as to be in a horizontal position.

Then, the extension rods 5y, 5y 'are mounted between the opposing extension rod receiving holes 10d and the extension rod pressing holes 5w, 5w'. Next, horizontal extending of the curtain body 1 is performed at four locations in the horizontal direction.

FIG. 3 is a perspective view of a stretched state of the film body stretching structure of the present invention. FIG. 4 is a perspective view of the membrane body stretching structure of the present invention in the middle of stretching. FIG. 2A is a cross-sectional view of the film body stretching structure of the present invention, in which FIG. 1A is a cross-sectional view taken along line XX of FIG. 1 before being stretched, FIG. FIG. 7D is a cross-sectional view of the film taken after stretching, and FIG. It is an expanded sectional view of a frame frame member and a plurality of frame stand frame members united therewith. 1A is a perspective view and FIG. 2B is a cross-sectional view illustrating an embodiment of a long elongation mechanism of a frame stand frame member. It is a perspective view of another embodiment of the elongation mechanism of a frame stand frame member. FIG. 3 is a perspective view of the stand type membrane body extending structure of the present invention. FIG. 4 is a perspective view of a stand-type membrane extending structure according to another embodiment of the present invention. It is a perspective view showing a vertical and horizontal direction curtain extension structure. It is explanatory drawing which shows the structure of a bush type mounting bracket and a frame moving bracket, (a) is an exploded perspective view of the bush type mounting bracket 10, (b) is a perspective view of the mounting state of the frame moving bracket 5. FIG. It is a structure sectional view of a horizontal direction curtain extension mechanism. It is explanatory drawing of the conventional screen extending structure.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Membrane, screen, sheet 1a Curtain end hole 2, 2 'Elongated member (membrane end clip)
3, 3 'frame member (front cover)
3m, 3m 'Fitting groove 3x, 3x' Screw receiving part 4, 4 'Pivot support member (frame stand frame rotating shaft support member)
5, 5 'frame stand frame member (support pipe)
5a Frame stand frame rotating shaft fulcrum end 5b Frame stand frame free end 5w, 5w 'Tension rod push hole 5x, 5x' Frame moving bracket 5y, 5y 'Tension rod 5z, 5z' Push screw 6, 6 'Engaging member (Frame stand free rotation end locking part)
Reference Signs List 9 screw 10 bush type mounting bracket 10a projection mounting bracket 10b receiving hole mounting bracket 10c screw 10d extension rod receiving hole 11 end mounting piece 20 frame vertical frame member elongating mechanism 21 connecting protrusion 22 connecting recess 23 expanding member 24 Eccentric worm gear 29 Rotating member 30 Frame stand frame member elongation mechanism 70 Stand member 80 Upper connection sheet (Stand connection at each corner)
90 Bottom binding sheet (Stand each side binding)
100, 200 Membrane extension structure

Claims (8)

At each end of the film body including at least a screen or display object, an elongated member having linear rigidity is attached, and the film body is stretched in a direction perpendicular to the parallel elongated members. A film body stretching structure in which the elongated members are respectively mounted on fitting grooves formed on the front side of a frame member,
Each of the frame members has a first semi-circular or larger circular first outer peripheral cross section with the front side being a semicircle or more. Is provided parallel to the center axis of the circle on the semicircle or more of the circumference,
Further, each frame member is provided on the rear side thereof near the opposite ends of the pair of frame members so as to pivotally support one end of a frame stand frame member for film stretching and rotate as a fulcrum. Support members, and
An engaging member is provided on the facing frame member, and an engaging member is provided to stop the free end of the upright frame member.
When not in use, the frame stand frame member is rotated by the pivot support member on the back side of the frame frame member, is folded along the central axis, and the outer peripheral cross section of the two members in the folded state is In order to form a circular shape, the back side has a second semicircular shape formed into a substantially semicircular or more circular shape having a semicircular or more circular shape,
When the frame frame member is used, the frame frame member is rotated by the pivot support member with respect to each frame frame member, and stands upright, and the free ends of the frame frame members are positioned at the positions of the frame frame members facing each other. It has a structure that is stopped by the engaging member provided in advance,
The film body extending structure, wherein the film body is wound around a folded outer peripheral frame member during storage / carrying, so that the film body is hardly creased. At each end of the film body including at least a screen or display object, an elongated member having linear rigidity is attached, and the film body is stretched in a direction perpendicular to the parallel elongated members. A film body stretching structure in which the elongated members are respectively mounted on fitting grooves formed on the front side of the frame member,
Each of the frame members has a first semi-circular or larger circular first outer peripheral cross section with the front side being a semicircle or more. Is provided parallel to the center axis of the circle on the semicircle or more of the circumference,
The frame member is divided into a plurality of n sections at an arbitrary interval length from one end thereof, and the frame frame member forming a pair with the frame frame member is similarly divided into a plurality of n sections from the one end in accordance with the interval length. The pair of frame members are divided into a plurality of continuous n pairs of sections,
On the rear side of the frame member, one end of the frame stand frame member for film extension is pivoted near the opposite ends of the frame member in each of the plurality of n pairs of sections. And a pivot member for rotating as a fulcrum, and
An engaging member is provided for each section provided on the facing frame member, and an engaging member for stopping the free end of the upright frame member,
When not in use, the frame stand frame member is rotated by the pivotal support member on the back side of the frame frame member for each section, is folded along the central axis, and the folded state of the two members Has a second outer peripheral cross section formed in a substantially semicircular or more circular shape in which the back side is a semicircle or more, so that the outer peripheral cross section forms a circular shape,
When the frame frame member is in use, the frame frame member is rotated by the pivoting member with respect to each frame frame member in each section, and stands upright, and the free ends of the frame frame members are opposed to each other. It has a structure in which the system is stopped by the engaging member provided in advance at the position of the frame member,
The film body extending structure, wherein the film body is wound around a folded outer peripheral frame member during storage / carrying, so that the film body is hardly creased. The frame stand frame member includes a coupling recess for coupling a long extension mechanism that extends the frame stand frame to a free end portion thereof,
The elongating mechanism is configured to irreversibly move the expanding member in the expanding direction, the connecting protrusion being inserted into the connecting concave portion to be connected, an expanding member movable in the longitudinal direction of the frame stand member, and the expanding member irreversibly. 3. The film body extending structure according to claim 1, comprising a worm gear and a pivot metal fitting for rotating the worm gear. The frame stand frame member includes a coupling recess for coupling a long extension mechanism that extends the frame stand frame to a free end portion thereof,
The elongating mechanism includes a coupling protrusion inserted into the coupling recess and coupled with the coupling member, an extension member movable in a longitudinal direction of the frame member, and a spring member for applying pressure in a direction to expand the extension member. 3. The film body extending structure according to claim 1, wherein the film body extending structure comprises: The pair of frame members are placed vertically, a portion having no film body is provided below the members by a predetermined length, and the frame members are fixed to the lower ends of the frame members by screws. The film body extending structure according to claim 1 or 2, further comprising a stand member that allows the frame member to stand on its own. The film body is stretched, and a plurality of pairs of frame members are vertically arranged, and one frame member and another adjacent pair of the other members are positioned at the upper / lower position of each member. And a connecting sheet fixing member provided with a screw hole at an upper end and / or a lower end of each of the frame members so as to screw both ends of the connecting sheet so that the connecting member can be connected to the frame member. The film body extending structure according to claim 1 or 2, wherein At least one pair of curtain end holes is provided at the same relative position of both ends of the film body in the vertical direction with respect to both ends of the film body in the horizontal direction to which the elongated member is mounted, and at least one pair of curtain end holes is provided. 3. The curtain body stretching according to claim 1, further comprising a horizontal curtain body stretching structure that stretches the curtain body toward the outside in the horizontal direction of the curtain body at each edge. Installation structure. The horizontal curtain body extending structure includes a pair of bushings that pass the projection of the projection mounting bracket through the hole from the front side of the curtain to the curtain end hole, and further screw through the receiving hole of the receiving hole mounting bracket. Type mounting bracket is provided,
When the frame stand frame member is used, each frame stand frame member located on the both sides located at the minimum distance to the curtain end hole portion has the frame member penetrated along the longitudinal frame axis. At least one frame moving bracket formed movably is provided,
Further, the receiving hole mounting bracket is provided with a projecting rod receiving hole for receiving a projecting rod tip for extending the curtain horizontally.
On the other hand, the frame moving bracket is provided with a rod push hole for moving the end, which is the other end of the rod, horizontally by a push screw,
Insert the tip of the extension rod into each of the extension rod receiving holes of the receiving hole mounting bracket, move the frame moving bracket of the frame stand frame member, and insert the rear end of the extension rod into the extension rod pressing hole. 8. The structure according to claim 7, wherein a mechanism is provided in which each of said curtain end holes is pushed outward in a curtain body horizontal direction by said push screw in a state where said extension bar is in a horizontal direction. Curtain extension structure.

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