JP2010085642A - Screen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen that properly keeps the flatness of a projection surface during use and improves the conveyability during non-use. <P>SOLUTION: This screen 1 includes a rectangular screen body; and a frame member having a plurality of arm sections connected so as to be capable of bending and stretching by a plurality of hinges 52; a rectangular frame shape, in a developed state where the plurality of arm sections are stretched and the screen body installed in the frame. In the hinges 52, a first linking section 551 and a second linking section 552 are turnably interconnected about a turning shaft 553. Respective linking sections 551 and 552 have a first engagement projection 5513, that is disposed on the first linking section 551 and projects turnably; a first engaging recess 5521C that is disposed on the second linking section 552 and engages with the first engagement projection 5513 by turning of the linking sections 551 and 552; and a first locking mechanism 57V1 for keeping the developed state by engagement of the first engagement projection 5513 with the first engaging recess 5521C. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a screen.

Conventionally, as a screen on which image light enlarged and projected from a projector or the like is projected, a folding screen with improved transportability when not in use has been proposed (for example, see Patent Document 1).
The foldable screen described in Patent Document 1 employs a rectangular frame-shaped support frame that is configured to be foldable by connecting a plurality of arm portions so as to be able to bend and extend by hinges as a member that supports the screen curtain.
The screen curtain is supported by the support frame by passing a plurality of strings through a plurality of holes formed in the outer edge portion of the screen curtain and connecting the plurality of strings to the support frame.

International Publication WO02 / 097530

However, in the screen described in Patent Document 1, since the support frame is configured to be foldable, it is difficult to stably support the screen curtain.
That is, in the screen described in Patent Document 1, it is difficult to maintain a state where the plurality of arm portions are extended in a state where the plurality of arm portions are extended and a projection surface of the screen curtain is formed (expanded state). There are problems that the plurality of arm portions are easily bent and the flatness of the projection surface cannot be maintained well.

  An object of the present invention is to provide a screen that can maintain good flatness of a projection surface during use and can improve transportability when not in use.

  The screen according to the present invention is a stretched screen body in which a plurality of arm portions are connected to each other by a plurality of hinge portions so that the plurality of arm portions can bend and stretch, and a rectangular screen body on which image light is projected. A frame-like member having a rectangular frame shape in the state, and the screen body is installed inside the frame, wherein the hinge portion is connected to one adjacent arm portion, and the other arm portion And a second engagement portion that is pivotally connected about a rotation axis, and each of the connection portions includes a first engagement protrusion that is provided on one of the connection portions and protrudes in the rotation direction. A first engaging recess that is provided in the other connecting portion and engages with the first engaging protrusion by the rotation of each connecting portion, and the first engaging protrusion is formed in the first engaging recess. A first lock mechanism that maintains the extended state by engaging is provided. And features.

  In the present invention, the hinge portion constituting the frame-like member is provided with a first lock mechanism having a first engagement protrusion and a first engagement recess. As a result, in the extended state in which the plurality of arm portions are extended, the first engagement protrusion engages with the first engagement recess, and the rotation of each connecting portion around the rotation axis is restricted. That is, the first lock mechanism is set in a locked state that maintains the stretched state in the stretched state. Therefore, in the extended state, it is possible to suppress the bending of the plurality of arm portions, stabilize the support state of the screen body by the frame-like member, and maintain the flatness of the projection surface well.

Further, by releasing the engagement state of the first engagement protrusion and the first engagement recess (setting the first lock mechanism to the unlocked state), when the screen is not used, a plurality of arm portions are provided by the plurality of hinge portions. Can be bent to fold the frame member. That is, when the screen is not in use, the frame-like member can be miniaturized and the transportability can be improved.
If the bending direction of each adjacent arm part (arrangement position of each hinge part) is appropriately set, it becomes possible to fold the frame-shaped member while the screen body is installed on the frame-shaped member. Can be improved.
Moreover, as a 1st lock mechanism, while adopting the simple structure of a 1st engagement protrusion and a 1st engagement recessed part, while making the manufacture easy, a 1st lock | rock is achieved by applying force to a several arm part. The mechanism can be easily set to the locked state and the unlocked state.

In the screen according to the aspect of the invention, each connection portion may include a second engagement protrusion provided in one of the connection portions and protruding in the rotation direction, and a rotation of each connection portion provided in the other connection portion. A second engaging recess that engages with the second engaging protrusion, and the second engaging protrusion engages with the second engaging recess so that the plurality of arm portions are bent. It is preferable that the 2nd locking mechanism to maintain is provided.
In the present invention, the hinge portion is provided with a second lock mechanism having a second engagement protrusion and a second engagement recess. As a result, in the storage state in which the plurality of arm portions are bent, the second engagement protrusion engages with the second engagement recess, and the rotation of each connecting portion around the rotation axis is restricted. That is, the second lock mechanism is set in a locked state that maintains the stored state in the stored state. Therefore, for example, when the screen is transported, it is possible to suppress the expansion of the plurality of arm portions, so that the state where the frame-shaped member is folded (stored state) can be maintained, and the transportability can be further improved.

  In the screen according to the aspect of the invention, the plurality of hinge portions include the hinge portion disposed on one first end side of the pair of end portions facing each other in the screen body, and the other second end side. The first engaging projections of the hinge portion arranged on the first end side are arranged on the second end side. It is preferable that the hinge part is formed so that a protruding dimension is longer than the first engaging protrusion.

By the way, for example, a hinge part (hereinafter referred to as an upper hinge part) disposed on the upper side of the screen body and a hinge part (hereinafter referred to as a hinge part disposed on the lower side) disposed on the lower side. Are arranged so as to face each other in the vertical direction, and the projecting dimensions of the first engaging protrusions of both hinge portions are set to be the same, a problem occurs as shown below. There is a fear.
That is, when the screen is set from the extended state to the retracted state by applying a force to the plurality of arm portions disposed on the upper side, a favorable force is applied to the upper hinge portion. The lock mechanism can be easily set from the locked state to the unlocked state. On the other hand, since the lower hinge part is separated from the site where the force is applied, the applied force is weak. For this reason, it is difficult to set the first locking mechanism of the lower hinge portion from the locked state to the unlocked state. When the first locking mechanism of the lower hinge portion cannot be set to the unlocked state, it is necessary to apply force to the plurality of arm portions disposed on the lower side again.

  In the present invention, the first engaging protrusion of the hinge portion disposed on the first end side has a longer protruding dimension than the first engaging protrusion of the hinge portion disposed on the second end side. Is formed. Thus, in the above example, if the protruding dimension of the first engaging protrusion of the upper hinge part is set longer than the protruding dimension of the first engaging protrusion of the lower hinge part, in addition to the lower hinge part, Even if the applied force is weak, the first locking mechanism of the lower hinge portion can be easily set from the locked state to the unlocked state. For this reason, the screen is stored from the stretched state simply by applying a force to a plurality of arm portions disposed on one first end side (for example, the upper side) of a pair of opposite end portions of the screen body. Can be easily set to the state.

  In the screen according to the aspect of the invention, each of the connecting portions is provided with a lock assisting mechanism that assists the first locking mechanism, and the lock assisting mechanism is provided in one of the connecting portions along the rotating shaft. A columnar portion that has a columnar shape that extends and rotates around the rotation axis together with the one connecting portion, and the columnar portion that is provided at the other connecting portion and that rotates when the connecting portions rotate. A sliding portion that slides on the outer peripheral surface of the portion, and a biasing member that biases the sliding portion toward the cylindrical portion, and a part of the outer peripheral surface of the cylindrical portion includes the In the stretched state, it is preferable that a first urging concave portion that engages with the sliding portion is formed.

  In the present invention, each connecting portion is provided with a lock assist mechanism including a columnar portion, a sliding portion, and an urging member. As a result, in the extended state, the sliding portion engages with the first urging recess of the cylindrical portion by the urging force of the urging member, and the rotation of each connecting portion around the rotation axis is performed. Be regulated. That is, in the extended state, the lock assist mechanism is set in a locked state that maintains the extended state in the same manner as the first lock mechanism. Therefore, by adopting the lock assist mechanism in addition to the first lock mechanism, the effect that the flatness of the projection surface described above can be favorably maintained can be suitably achieved.

In the screen of the present invention, a part of the outer peripheral surface of the columnar part is formed with a second urging concave part that engages with the sliding part in the storage state in which the plurality of arm parts are bent. It is preferable.
In the present invention, in addition to the first urging concave portion, a second urging concave portion is formed on a part of the outer peripheral surface of the cylindrical portion. Thus, in the housed state, the sliding portion engages with the second biasing concave portion of the cylindrical portion by the biasing force of the biasing member, and the rotation of each connecting portion around the rotation shaft is performed. Be regulated. That is, in the housed state, the lock assist mechanism is set to a locked state that maintains the housed state, similarly to the second lock mechanism. Therefore, for example, by adopting the lock assist mechanism in addition to the second lock mechanism, it is possible to suitably achieve the effect that the above-described transportability can be further improved.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[Schematic configuration of screen]
1 and 2 are diagrams showing a schematic configuration of the screen 1. Specifically, FIG. 1 is a perspective view of the state in which the projection surface is formed as viewed from the front side. FIG. 2 is a view from the back side.
In the following, for convenience of explanation, in the state where the projection surface of the screen body 2 is formed, the projection surface side is the front surface, the opposite side to the projection surface is the back surface, the right side when viewed from the front surface side, the left is “right”, It is described as “Left”.
On the screen 1, for example, image light enlarged and projected from a projector or the like is projected. As shown in FIG. 1 or FIG. 2, the screen 1 includes a screen body 2, four cylindrical members 3 (see FIG. 3), an annular member 4 (see FIG. 3), a frame-like member 5, and 4 Two latching members 6 (FIG. 2).

[Configuration of screen body]
FIG. 3 is a diagram showing the configuration of the screen body 2.
The screen body 2 is formed in a flexible sheet shape, and the incident image light is projected thereon. In the present embodiment, the screen body 2 is constituted by a reflective screen that reflects incident image light.

[Configuration of cylindrical member]
FIG. 4 is a diagram showing the configuration of the cylindrical member 3. Specifically, FIG. 4 is an enlarged perspective view of a corner portion of the screen body 2.
As shown in FIG. 3, the four cylindrical members 3 are provided along the upper, lower, left, and right edges of the screen body 2.
In the present embodiment, as the screen main body 2, extra regions are provided in each of the upper, lower, left and right portions of the rectangular projection surface. And each part is folded and sewed, and as shown in FIG. 3 or FIG. 4, the cylindrical member 3 is provided on each of the upper, lower, left and right edges of the screen body 2. That is, the cylindrical member 3 is made of the same fabric as the screen body 2.

[Configuration of annular member]
FIG. 5 is a diagram illustrating a configuration of the annular member 4. Specifically, FIG. 5 is a diagram showing a part of the edge of the screen body 2.
The annular member 4 is formed by connecting both ends of a string-like annular member main body 41 so as to have an annular shape, and is inserted through the four tubular members 3 as shown in FIG.
As shown in FIGS. 3 to 5, the annular member 4 includes an annular member main body 41 and a tension spring 42 (FIG. 5).
In the present embodiment, the annular member main body 41 is constituted by a tentacle thread. In addition, as the annular member main body 41, you may employ | adopt not only a string thread but another string-like member.
As shown in FIG. 5, the tension spring 42 is a member that connects both ends of the annular member body 41. That is, both ends of the annular member main body 41 are connected by the tension spring 42, so that the annular member 4 can be expanded and contracted by the urging force of the tension spring 42.
In the annular member 4, the position where the tension spring 42 is disposed is set inside any one of the four cylindrical members 3 as shown in FIG. 5.

[Configuration of frame-shaped member]
6 and 7 are perspective views showing the configuration of the frame-like member 5. Specifically, FIG. 6 is a perspective view of the upper left side of the frame-like member 5 as viewed from the front side. FIG. 7 is a view showing a state in which the screen body 2 is installed on the frame-like member 5 shown in FIG.
As shown in FIG. 1 or 2, the frame-shaped member 5 has a rectangular frame shape, and the screen body 2 is installed inside the frame by the four cylindrical members 3, the annular member 4, and the four hooking members 6. It is a member. As shown in FIG. 1 or 2, the frame-like member 5 includes twelve arm portions 51 and twelve hinge portions 52 that connect the twelve arm portions 51 so as to be able to bend and stretch.
In the following description, of the twelve arm portions 51, each of the four arm portions 51 disposed on the upper side and the lower side and connected so as to extend in the left-right direction has substantially the same configuration. Therefore, it is described as a horizontal arm portion 51H.
Further, each of the two arm portions 51 disposed on the left side and the right side and connected so as to extend in the up-down direction has a substantially similar configuration, and therefore is referred to as a vertical arm portion 51V.
Further, among the 12 hinge portions 52, each of the three hinge portions 52 connecting the upper and lower four horizontal arm portions 51H has substantially the same configuration, and hence is described as a horizontal hinge portion 53H. .
In addition, among the twelve hinge portions 52, each one hinge portion 52 that connects the two left and right vertical arm portions 51 </ b> V has substantially the same configuration, and thus the first vertical hinge portion 54 </ b> V and Describe.
Further, of the twelve hinge portions 52, the four hinge portions 52 disposed at the four corners of the frame-like member 5 and connecting the horizontal arm portion 51H and the vertical arm portion 51V have substantially the same configuration. Therefore, it is described as the second vertical hinge portion 55V.

[Configuration of arm part]
As shown in FIG. 6, the horizontal arm portion 51 </ b> H has an overall substantially columnar shape with a substantially U-shaped cross section, and is disposed so that the U-shaped opening portion is positioned inside the frame of the frame-shaped member 5. That is, the first arm 511 extending along the extending direction of the horizontal arm 51H is formed on the inner side of the frame-shaped member 5 in the horizontal arm 51H.
Moreover, the 1st protrusion part 511A and the 2nd protrusion part 511B which are mutually opposed and are extended in the extension direction of the horizontal arm part 51H are formed in the front-end | tip part of the 1st groove part 511. As shown in FIG.

As shown in FIG. 6, the vertical arm portion 51V has an overall substantially columnar shape with a substantially U-shaped cross section, as in the horizontal arm portion 51H, and includes a first concave strip portion 511 and projecting portions 511A and 511B. Is provided.
Of the two vertical arm portions 51V arranged on the right side, in the vertical arm portion 51V1 arranged on the upper side, the position on the side surface outside the frame is away from the first vertical hinge portion 54V and is directed outward. An arm-side engagement protrusion 512A that protrudes in this manner is provided (see FIGS. 15 and 16).
Although not specifically shown, the arm-side engagement protrusion 512A is formed so that the tip has a substantially L-shaped cross section. Further, the arm-side engagement protrusion 512A is configured to have elasticity depending on the rigidity of the material, the protrusion size, and the like.
Further, in the vertical arm portion 51V2 disposed on the lower side, an arm side engagement hole 512B that engages with the arm side engagement protrusion 512A is located at a position separated from the first vertical hinge portion 54V on the side surface outside the frame. It is formed (see FIGS. 15 and 16).
Regarding the two vertical arm portions 51V disposed on the left side, the arm side engagement hole 512B is provided in the vertical arm portion 51V1 disposed on the upper side and disposed on the lower side, contrary to the above. The arm-side engagement protrusion 512A is formed on the vertical arm portion 51V2 (see FIGS. 15 and 16).

[Configuration of the second vertical hinge]
8 and 9 are perspective views showing the configuration of the second vertical hinge portion 55V. Specifically, FIG. 8 shows a state of the second vertical hinge portion 55V when the horizontal arm portion 51H and the vertical arm portion 51V are extended so as to be orthogonal to each other, and FIG. 9 shows the horizontal arm portion 51H and the vertical arm portion 51V. The state of the 2nd vertical hinge part 55V at the time of making it bend so that it may mutually overlap is shown. 8A and 9A are views seen from the front side, and FIGS. 8B and 9B are views seen from the back side.
As shown in FIG. 8 or FIG. 9, the second vertical hinge portion 55V is connected to one arm portion 51 of each arm portion 51 (51H, 51V) positioned at a corner portion of the frame-like member 5. The part 551 and the second connecting part 552 connected to the other arm part 51 have a configuration in which the part 551 and a second connecting part 552 connected to the other arm part 51 are connected so as to be rotatable around a turning shaft 553 along the front-rear direction.

FIG. 10 is a perspective view showing the internal structure of the second vertical hinge portion 55V. Specifically, FIG. 10A is a view of the state in which the respective front-side casings 5511B and 5521B are removed from the second vertical hinge portion 55V from the front side in the state of FIG. FIG. 10B is a view of the state in which the respective rear side housings 5511A and 5521A are removed from the second vertical hinge portion 55V in the state of FIG. 9 as viewed from the back side.
As shown in FIGS. 8 to 10, the first connecting portion 551 includes a first housing 5511, a first connecting portion main body 5512 (FIG. 10), and a first engagement protrusion 5513 (FIG. 9B, FIG. 10) and a second engagement protrusion 5514 (FIG. 8A, FIG. 10).

The first housing 5511 is a substantially rectangular parallelepiped housing that holds the first connecting portion main body 5512 and the engagement protrusions 5513 and 5514 inside.
In the following, for convenience of explanation, in the first housing 5511, the side surface on the inner side of the frame-like member 5 is the first side surface S11, the side surface on the outer side of the frame is the second side surface S12, and the side surface facing the second connecting portion 552. Is the third side surface S13, and the side surface facing the third side surface S13 is the fourth side surface S14.
The first housing 5511 is divided into two bodies, a front surface side and a back surface side, and includes a first back surface housing 5511A and a first front surface housing 5511B.

In the first housing 5511, the corner portion intersecting the first side surface S11 and the third side surface S13 is a first curved surface SC1 having a 90 ° arc in plan view with the rotation shaft 553 as the center (FIG. 8B, FIG. 9B).
Further, in the first housing 5511, the third side surface S13 and the first side surface S11 are provided with a first projecting hole 5511C (FIGS. 9B and 10A) for projecting the first engaging projection 5513 to the outside. ) And second protrusion holes 5511D (FIGS. 8A and 10A) for projecting the second engagement protrusion 5514 to the outside.
The first protruding hole 5511C is formed larger than the first engaging protrusion 5513 in consideration of the movement of the distal end portion of the first engaging protrusion 5513 described later. The same applies to the second protrusion hole 5511D.
Further, in the first housing 5511, a connection portion 5511E that is connected to one arm portion of each arm portion 51 (51H, 51V) positioned at a corner portion of the frame-shaped member 5 is formed on the fourth side surface S14. ing.

  As shown in FIG. 8 (A) or FIG. 9 (A), the first front-side housing 5511B has a cutout portion cut out along the fourth side surface S14, the first side surface S11, and the third side surface S13. 5511F is formed. That is, a part of the first front side housing 5511B (the frame inner side of the frame-like member 5) is separated from the first back side housing 5511A.

  As shown in FIG. 10A, the first connecting portion main body 5512 is formed in a plate shape, and is connected to the rotation shaft 553 and has a circular outer edge of approximately 270 ° centered on the rotation shaft 553. An arc-shaped portion 5512A and an extending portion 5512B that extends along the arc-shaped portion 5512A and is connected to the first back-side housing 5511A by a screw.

As shown in FIG. 10A, the first engagement protrusion 5513 is fixed in the vicinity of the third side surface S13 of the first housing 5511 (first back-side housing 5511A), and the first protrusion 5513 is interposed through the first protrusion hole 5511C. Projecting outside the first housing 5511. The first engagement protrusion 5513 protrudes in a rotation direction about the rotation shaft 553 from the outer peripheral surface of the cylindrical portion 5513A and the cylindrical portion 5513A, which is fixed to the first back-side housing 5511A with screws. It is comprised with the projection part 5513B.
The tip portion of the protrusion 5513B protrudes toward the rotation shaft 553 and has a substantially L-shaped cross section. The protrusion 5513B is configured to have elasticity depending on the rigidity of the material of the first engagement protrusion 5513, the protrusion size, and the like. Further, the protrusion 5513B has a position restriction rib provided on the second side surface S12 side with respect to the protrusion 5513B and on the base end side of the protrusion 5513B in the first back side housing 5511A due to its elasticity. 5511G (FIG. 10A) is used as a fulcrum, and the distal end portion is close to and separated from the rotation shaft 553.

As shown in FIG. 10A, the second engagement protrusion 5514 is fixed in the vicinity of the first side surface S11 of the first housing 5511 (first back-side housing 5511A), and via the second protrusion hole 5511D. Projecting outside the first housing 5511.
The configuration of the second engagement protrusion 5514 is the same as that of the first engagement protrusion 5513, and a specific description thereof will be omitted.

As shown in FIGS. 8 to 10, the second connecting portion 552 includes a second housing 5521 and a second connecting portion main body 5522 (FIG. 10).
The second housing 5521 is a substantially rectangular parallelepiped housing that holds the second connecting portion main body 5522 inside.
In the following, similarly to the first housing 5511, in the second housing 5521, the side surface inside the frame of the frame-shaped member 5 is the first side surface S 21, the side surface outside the frame is the second side surface S 22, and the first connecting portion. A side surface facing 551 is a third side surface S23, and a side surface facing the third side surface S23 is a fourth side surface S24.
Similar to the first housing 5511, the second housing 5521 is divided into two bodies, a front surface side and a back surface side, and includes a second back surface housing 5521A and a second front surface housing 5521B. ing.

In the second housing 5521, on the third side surface S23, as shown in FIG. 9 (B) or FIG. 10 (A), the first engagement as a first engagement recess that engages with the first engagement protrusion 5513 is provided. A combined hole 5521C is formed.
The first engagement protrusion 5513 and the first engagement hole 5521C correspond to the first lock mechanism 57V1 (FIG. 9B, FIG. 10) according to the present invention.
Note that the function of the first lock mechanism 57V1 will be described at the same time when the storage structure of the screen 1 (the operation of the screen 1) is described.
Further, in the second housing 5521, a connection portion 5521D connected to the other arm portion 51 of each arm portion 51 (51H, 51V) positioned at a corner portion of the frame-like member 5 is formed on the fourth side surface S24. Has been.

Further, the second housing 5521 is provided with an abutting portion 5523 connected to a corner portion intersecting the first side surface S21 and the third side surface S23.
A part of the side surface of the contact portion 5523 has a second curved surface SC2 and a contact surface SA, as shown in FIG. 8, FIG. 9B, or FIG.
The second curved surface SC2 is connected to the third side surface S23 and has an arc shape of about 180 ° in plan view with the rotation shaft 553 as the center from the third side surface S23. And 2nd curved surface SC2 contact | abuts to 1st curved surface SC1 in the 1st connection part 551. FIG.

The contact surface SA is connected to the second curved surface SC2 and extends substantially parallel to the third side surface S23.
As shown in FIG. 8A, the contact surface SA is formed with a second engagement hole 5521E as a second engagement recess that engages with the second engagement protrusion 5514.
The second engagement protrusion 5514 and the second engagement hole 5521E correspond to the second lock mechanism 57V2 (FIGS. 8A and 10) according to the present invention.
The function of the second lock mechanism 57V2 will be described at the same time as the storage structure of the screen 1 (the operation of the screen 1).
Further, as shown in FIG. 8A or FIG. 9A, the second front side housing 5521B is formed with a notch portion 5521F, similar to the notch portion 5511F of the first front side housing 5511B. Yes.

The second connecting portion main body 5522 is a member that connects the rotation shaft 553 and the second housing 5521, and like the first connecting portion main body 5512, as shown in FIG. And an extending portion 5522B.
As shown in FIG. 10, each of the connecting portion main bodies 5512 and 5522 has a cylindrical sliding contact member 5524 interposed between the arc-shaped portions 5512A and 5522A, and the arc-shaped portions 5512A and 5522A. The rotation shaft 553 is inserted through the center position and connected to each other.

With the above configuration, the second vertical hinge portion 55V has a position between the position where the third side surfaces S13 and S23 abut (FIG. 8) and the position where the first side surface S11 and the abutment surface SA abut. It is possible to rotate 90 ° about the rotation shaft 553.
The arm portions 51H and 51V are stretched so as to be orthogonal to each other (FIGS. 1, 2, and 6) by the rotation of the connection portions 551 and 552 around the rotation shaft 553, and to each other. Each moves to a state of overlapping and bending (see FIG. 17).

  Here, as shown in FIGS. 6 to 8A, the second vertical hinge portion 55V has the cutout portions 5511F and 5521F in a state where the connected arm portions 51H and 51V extend so as to be orthogonal to each other. A second groove 554 is formed which extends along the extending direction of the vertical arm 51V and communicates with each first groove 511 provided in each arm 51H, 51V.

[Configuration of the first vertical hinge]
FIG. 11 is a perspective view of the first vertical hinge portion 54V viewed from the back side. Specifically, FIG. 11A shows a state of the first vertical hinge portion 54V when the vertical arm portions 51V are extended, and FIG. 11B shows a state where the vertical arm portions 51V are bent so as to overlap each other. The state of the 1st vertical hinge part 54V is shown.
As shown in FIG. 11, the first vertical hinge portion 54V includes a first connecting portion 541 connected to one vertical arm portion 51V in the adjacent vertical arm portions 51V and a second connecting to the other vertical arm portion 51V. The connecting portion 542 has a configuration in which the connecting portion 542 is rotatably connected around a rotating shaft 543 along the front-rear direction.
In addition, the 1st connection part 541, the 2nd connection part 542, and the rotating shaft 543 are substantially the same as the 1st connection part 551, the 2nd connection part 552, and the rotating shaft 553 in the 2nd vertical hinge part 55V mentioned above. Therefore, in the following, parts having similar functions are denoted by the same reference numerals, and detailed description thereof is omitted.

As shown in FIG. 11, the first vertical hinge portion 54 </ b> V has a second curved surface SC <b> 2 having an arc shape of about 270 ° centered on the rotation shaft 543 in the second connecting portion 542, and a contact surface SA is provided on the second side surface S22.
That is, the first vertical hinge portion 54V is between the position where the third side surfaces S13 and S23 abut (FIG. 11A) and the position where the second side surfaces S12 and S22 (abutment surface SA) abut. That is, it is possible to rotate 180 ° about the rotation shaft 543.
Each vertical arm portion 51V is extended in a straight line in the vertical direction by the rotation of the connecting portions 541 and 542 around the rotation shaft 543 (FIGS. 1, 2, and 6). , And a state of overlapping each other and bending (see FIG. 18).
Although not specifically shown, the first vertical hinge portion 54V is different from the second vertical hinge portion 55V in that a second lock mechanism 57V2 (second engagement protrusion 5514 and second engagement hole 5521E) is provided. It is omitted.

[Configuration of the horizontal hinge]
In the following, the horizontal hinge portion 53HC (see FIGS. 15 and 16) positioned at the center of the three horizontal hinge portions 53H disposed on the upper side will be described as a representative.
FIG. 12 is a perspective view of the lateral hinge portion 53HC viewed from the front side. Specifically, FIG. 12 (A) shows the state of the horizontal hinge portion 53HC when each lateral arm portion 51H is extended, and FIG. 12 (B) shows the lateral direction when each lateral arm portion 51H is bent so as to overlap each other. The state of the hinge part 53HC is shown.
As shown in FIG. 12, the horizontal hinge portion 53HC includes a first connecting portion 531 that is connected to one horizontal arm portion 51H in the adjacent horizontal arm portions 51H, and a second connecting portion that is connected to the other horizontal arm portion 51H. 532 is connected so as to be rotatable about a rotation shaft 533 along the vertical direction.

The 1st connection part 531 is provided with the 1st housing | casing 5311 and the 1st engaging protrusion 5312 (FIG. 12 (B)), as shown in FIG.
The first housing 5311 is a substantially rectangular parallelepiped housing that holds the first engagement protrusion 5312 inside.
Hereinafter, for convenience of explanation, in the first housing 5311, the side surface on the front side is the first side surface S 31, the side surface on the back side is the second side surface S 32, and the side surface facing the second connecting portion 532 is the third side surface S 33. The side surface facing the third side surface S33 is referred to as a fourth side surface S34.
In the first housing 5311, a rotation shaft 533 is integrally provided at a corner portion intersecting the second side surface S32 and the third side surface S33.
The rotating shaft 533 will be described in detail when the second connecting portion 532 is described.

Further, in the first housing 5311, the third side surface S33 is formed with a first protruding hole 5311A (FIG. 12B) for protruding the first engaging protrusion 5312 to the outside.
The first protruding hole 5311A is formed larger than the first engaging protrusion 5312 in consideration of the movement of the tip portion of the first engaging protrusion 5312 described later.
Further, in the first housing 5311, a connection portion 5311B that connects to one horizontal arm portion 51H of each adjacent horizontal arm portion 51H is formed on the fourth side surface S34.
In the first housing 5311, the first side surface S31 and the second side surface S32 are formed with a protruding portion 5311C that protrudes from the inner edge of the frame-like member 5.

As shown in FIG. 12B, the first engagement protrusion 5312 is fixed in the vicinity of the third side surface S33 of the first housing 5311 and protrudes outside the first housing 5311 through the first protrusion hole 5311A. To do. The first engagement protrusion 5312 includes a substantially rectangular plate-like base 5312A fixed to the first housing 5311 with a screw, and a protrusion protruding in the rotation direction around the rotation shaft 533 from the outer edge of the base 5312A. 5312B (see FIG. 13).
The base 5312A is in a state in which the rotation around the screw is restricted by the first side face S31 or the position restriction rib 5311D (see FIG. 13) provided facing the first side face S31 inside the first housing 5311. The first casing 5311 is fixed.
The protruding portion 5312B has a substantially L-shaped cross section in which the tip portion protrudes toward the rotating shaft 533 and is configured to be elastic, like the protruding portion 5513B in each of the vertical hinge portions 54V and 55V. . Then, the protrusion 5513 </ b> B is elastically separated from the rotation shaft 533 at the tip end portion with the connection portion with the base 5312 </ b> A as a fulcrum.

FIG. 13 is a view showing the internal structure of the second connecting portion 532. Specifically, FIG. 13 (A) corresponds to the state of FIG. 12 (A), FIG. 13 (C) corresponds to the state of FIG. 12 (B), and FIG. 13 (B) corresponds to FIG. It is a figure corresponding to the state between FIG.
As shown in FIG. 12 or FIG. 13, the second connecting portion 532 includes a second housing 5321, a sliding portion 5322 (FIG. 13), and an urging member 5323 (FIG. 13).
The second housing 5321 is a substantially rectangular parallelepiped housing that holds the sliding portion 5322 and the biasing member 5323 inside.
In the following, for convenience of explanation, in the second housing 5321, the side surface on the front side is the first side surface S 41, the side surface on the back side is the second side surface S 42, and the first connecting portion 531 is the same as the first housing 5311. A side surface facing the third side surface S43 is a side surface facing the third side surface S43, and a side surface facing the third side surface S43 is a fourth side surface S44.
In the second housing 5321, a fitting portion 5321 </ b> A into which both ends of the rotation shaft 533 are fitted is provided at a corner portion intersecting the second side surface S <b> 42 and the third side surface S <b> 43.
Further, in the second housing 5321, the third side surface S43 has a first engagement as a first engagement recess that engages with the first engagement protrusion 5312 as shown in FIG. 12B or FIG. A hole 5321B is formed.
The first engagement protrusion 5312 and the first engagement hole 5321B correspond to the first lock mechanism 57H according to the present invention (FIGS. 12B and 13).
Note that the function of the first lock mechanism 57H will be described at the same time as the storage structure of the screen 1 (the operation of the screen 1).
Further, in the second housing 5321, a connection portion 5321C connected to the other horizontal arm portion 51H of each adjacent horizontal arm portion 51H is formed on the fourth side surface S44.
Further, in the second housing 5321, the first side surface S 41 and the second side surface S 42 are formed with a protruding portion 5321 D that protrudes from the inner edge of the frame-like member 5.

Here, before describing the sliding portion 5322 and the biasing member 5323, the shape of the rotation shaft 533 will be described.
The rotation shaft 533 is provided integrally with the first housing 5311 as described above, and has a substantially cylindrical shape with small diameters at both ends.
On the outer peripheral surface of the rotating shaft 533, a first rotationally symmetrical position of 180 ° about the columnar axis is provided as a first section having a substantially triangular cross section that engages with the tip portion of the sliding portion 5322 as shown in FIG. An urging recess 5331 and a second urging recess 5332 are formed.
The rotation shaft 533 corresponds to the columnar portion according to the present invention.

As shown in FIG. 13, the sliding portion 5322 has a substantially triangular cross section in accordance with each of the biasing recesses 5331 and 5332.
The sliding portion 5322 slides on the outer peripheral surface of the rotating shaft 533 when the first connecting portion 531 and the second connecting portion 532 rotate around the rotating shaft 533.
Further, the sliding portion 5322 has a corner portion where the first side surface S41 and the fourth side surface S44 intersect with each other and a corner portion where the second side surface S42 and the third side surface S43 intersect with each other by a rib formed inside the second housing 5321. It arrange | positions so that a movement on the straight line with a part is possible.
As shown in FIG. 13, the urging member 5323 is configured by a coil spring, and the rotation shaft 533 (the second side surface S42 and the third side surface S43 intersect each other) from the corner portion where the first side surface S41 and the fourth side surface S44 intersect. The sliding portion 5322 is urged toward the corner portion.
The rotating shaft 533, the sliding portion 5322, and the urging member 5323 correspond to the lock assist mechanism 58 (FIG. 13) according to the present invention.
The function of the lock assist mechanism 58 will be described at the same time as the storage structure of the screen 1 (the operation of the screen 1).

  With the above configuration, the horizontal hinge portion 53H has a position where the third side surfaces S33, S43 abut (FIG. 12A, FIG. 13A) and a position where the first side surfaces S31, S41 abut. In other words, it is possible to rotate 180 ° about the rotation shaft 533. That is, the two horizontal arm parts 51H connected by the horizontal hinge part 53H are stretched so as to be linear in the left-right direction by the rotation of the connection parts 531 and 532 around the rotation shaft 533. (FIG. 1, FIG. 2, FIG. 6) and a state of overlapping and bending (see FIGS. 15 and 16), respectively.

Here, as shown in FIG. 6, the horizontal hinge portion 54 </ b> H has the protrusion 5311 </ b> C and the protrusion 5321 </ b> D that are in contact with each other in a state where the connected horizontal arm portions 51 </ b> H extend in a straight line in the left-right direction. A second groove 534 is formed that extends in the extending direction of the horizontal arm 51H and communicates with each first groove 511 provided in each horizontal arm 51H.
Therefore, the first to third concave strip portions 511, 534, 554 communicate with each other, so that the four cylindrical members provided on the upper, lower, left and right edges of the screen body 2 are provided inside the frame-like member 5. 3 is formed. That is, in the state where the screen 1 is assembled, the four cylindrical members 3 are housed in the housing portion 56 as shown in FIG. 7, and are not visible from the outside.
In the state where the four cylindrical members 3 are stored in the storage portion 56, as shown in FIG. 7, the connecting portion between the screen body 2 and the cylindrical member 3 is sandwiched between the protrusions 511A and 511B. The cylindrical member 3 is prevented from being pulled out inside the frame of the frame-shaped member 5.

Of the three horizontal hinge portions 53H disposed on the upper side, the other two horizontal hinge portions 53HL and 53HR except the above-described horizontal hinge portion 53HC are centered on the vertical axis with respect to the horizontal hinge portion 53HC. They are arranged in a state rotated by 180 ° (see FIGS. 15 and 16).
Further, the three horizontal hinge portions 53H disposed on the lower side are also disposed in the same manner as the horizontal hinge portions 53HC, 53HL, and 53HR (see FIGS. 15 and 16).

FIG. 14 is a diagram showing a difference between each lateral hinge portion 53H disposed on the upper side and each lateral hinge portion 53H disposed on the lower side. Specifically, FIG. 14A shows the lateral hinge portion 53H disposed on the upper side, and FIG. 14B shows the lateral hinge portion 53H disposed on the lower side.
Here, each horizontal hinge part 53H (henceforth described as horizontal hinge part 53HU (refer FIG. 15, FIG. 16)) arrange | positioned by the upper side (1st edge part side), and the downward side (2nd edge part side) The horizontal hinges 53H (hereinafter referred to as horizontal hinges 53HD (see FIG. 15 and FIG. 16)) arranged in FIG.
That is, the horizontal hinge part 53HU and the horizontal hinge part 53HD are formed so that the protrusion dimensions LU, LD of the protrusion part 5312B of the first engagement protrusion 5312 are different as shown in FIG.
Specifically, the protrusion dimension LU of the first engagement protrusion 5312 in the lateral hinge part 53HU is formed to be longer than the protrusion dimension LD of the first engagement protrusion 5312 in the lateral hinge part 53HD.

[Configuration of latching member]
The latch member 6 is provided at a corner portion of the frame-shaped member 5 and is a member that latches the annular member 4 inserted through the four tubular members 3 and restricts the annular member 4 from moving to the inside of the frame. It is.
In the present embodiment, the hooking member 6 employs a so-called screw.
Specifically, the latching member 6 latches the annular member 4 as described below.
That is, as described above, the four cylindrical members 3 provided on the top, bottom, left, and right edges of the screen body 2 are stored in the storage portion 56.
In this state, the corner portion of the annular member 4 is positioned inside the connection portion between the horizontal arm portion 51H and the second vertical hinge portion 55V (intersection portion of the first concave portion 511 and the second concave portion 554). Will be.
Further, in the above state, although not specifically shown, an annular shape is formed via a long hole 513 (FIG. 2) formed at a position corresponding to a corner portion of the frame-like member 5 on the back surface of the horizontal arm portion 51H. The corner portion of the member 4 can be visually recognized from the outside.
In the above state, the latching member 6 is inserted into the lateral arm portion 51H through the long hole 513, and is disposed inside the lateral arm portion 51H so as to latch the corner portion of the annular member 4. Screwed to a moving member (not shown).
Although not specifically shown, the moving member is urged diagonally outward in the frame-like member 5 by an urging member such as a spring. That is, the latching member 6 screwed to the moving member is also urged diagonally outward.
Therefore, as the latching member 6 is biased outward in the diagonal direction, the corner portion of the annular member 4 latched by the latching member 6 is also biased outward in the diagonal direction, and the annular member 4 and the tubular member 3, tension is applied to the screen body 2.

[Screen storage structure]
15 to 18 are diagrams sequentially illustrating the operation of setting the screen 1 from the extended state to the retracted state. Specifically, FIGS. 15 to 18 are perspective views of the screen 1 as seen from the left side of the front surface.
15 to 18, the screen main body 2 is not shown for convenience of explanation.
First, in a state where each arm portion 51 is extended and the projection surface of the screen body 2 is formed (expanded state (FIG. 1)), the first lock mechanisms 57H and 57V1 and the lock assist mechanism 58 are as follows. It is functioning.
That is, in the first lock mechanism 57H, as shown in FIG. 13A, the first engagement protrusion 5312 is inserted into the second housing 5321 through the first engagement hole 5321B. And the front-end | tip part of the 1st engagement protrusion 5312 is the state latched in the 2nd housing | casing 5321 inside the 1st engagement hole 5321B peripheral part.
Therefore, the first lock mechanism 57H restricts the rotation of the connecting portions 531 and 532 around the rotation shaft 533, and maintains the state where the horizontal arm portion 51H is extended so as to be linear in the left-right direction. (First locked state).
In addition, also in the 1st lock mechanism 57V1 which comprises other vertical hinge parts 54V and 55V, it is a 1st locked state similarly to the above.

Further, in the lock assist mechanism 58, as shown in FIG. 13A, the tip portion of the sliding portion 5322 is engaged with the first urging concave portion 5331 of the rotating shaft 533 by the urging force of the urging member 5323. Match.
That is, the lock assisting mechanism 58, together with the first locking mechanism 57H, regulates the rotation of the connecting portions 531 and 532 around the rotation shaft 533 so that the lateral arm portion 51H is linear in the left-right direction. The extended state is maintained (first locked state).

Then, for example, by applying a force to each lateral arm portion 51H on the upper side from the extended state, the first lock mechanism 57H and the lock assist mechanism 58 operate as described below.
That is, in the first lock mechanism 57H, the force applied to the lateral arm portion 51H moves the distal end portion of the first engagement protrusion 5312 away from the rotation shaft 533, and the first engagement hole 5321B Is released (unlocked state).
Further, the lock assist mechanism 58 causes the sliding portion 5322 to ride on the first biasing recess 5331 against the biasing force of the biasing member 5323 by the force applied to the lateral arm portion 51H (unlocked state). ) It slides on the outer peripheral surface of the rotating shaft 533 (FIG. 13B).
As described above, when the first lock mechanism 57H and the lock assist mechanism 58 are in the unlocked state, as shown in FIG. 15, the horizontal hinge portions 53HC, 53HL, and 53HR disposed on the upper side and the lower side are used. The horizontal arm portions 51HC1 and 51HC2 positioned at the center in the left-right direction bend to the back side, and the horizontal arm portions 51HL and 51HR positioned on both sides in the left-right direction with respect to the horizontal arm portions 51HC1 and 51HC2 are front surfaces. Bend to the side. And as shown in FIG. 16, each horizontal arm part 51H arrange | positioned by the upper side and the downward side is set to the mutually overlapped state.

When the horizontal arm portions 51H are set to overlap each other, the lock assist mechanism 58 operates as described below.
That is, the tip portion of the sliding portion 5322 slides on the outer peripheral surface of the rotating shaft 533, and the urging force of the urging member 5323 causes the first portion of the rotating shaft 533 to slide as shown in FIG. 2 engages with the urging recess 5332.
That is, the lock assisting mechanism 58 restricts the rotation of the connecting portions 531 and 532 around the rotation shaft 533, and maintains the bent state so that the horizontal arm portions 51H overlap each other (second locked state). ).

Next, by applying a force to each horizontal arm portion 51H toward the left and right vertical arm portions 51V1 and 51V2, the first lock mechanisms 57V1 constituting the four second vertical hinge portions 55V As with the 1-lock mechanism 57H, the first locked state is shifted to the unlocked state.
Then, when the first lock mechanism 57V1 is in the unlocked state, as shown in FIG. 17, each of the horizontal arms on the upper side is directed toward the left and right vertical arm portions 51V1 by the four second vertical hinge portions 55V. While the part 51H is bent, the horizontal arm parts 51H on the lower side are bent toward the left and right vertical arm parts 51V2.

Here, in the state of FIG. 17, the second lock mechanism 57 </ b> V <b> 2 constituting each second vertical hinge portion 55 </ b> V operates as described below.
In other words, the second lock mechanism 57V2 moves away from the rotation shaft 553 while the tip end portion of the second engagement protrusion 5514 is in contact with the second engagement hole 5521E by the force applied to each lateral arm portion 51H. It moves and is inserted into the second housing 5521. The distal end portion of the second engagement protrusion 5514 is hooked to the peripheral portion of the second engagement hole 5521E inside the second housing 5521.
Accordingly, the second lock mechanism 57V2 regulates the rotation of the connecting portions 551 and 552 around the rotation shaft 553, and maintains the bent state so that the arm portions 51H and 51V overlap each other ( Second locked state).

Finally, by applying a force to each vertical arm portion 51V, the first lock mechanism 57V1 constituting the two first vertical hinge portions 54V is in the first locked state in the same manner as the first lock mechanism 57H described above. Transition to the unlocked state.
When the first lock mechanism 57V1 is unlocked, the left and right vertical arm portions 51V1 and 51V2 are bent by the left and right first vertical hinge portions 54V, as shown in FIG. 51V is set to overlap each other.

Here, in the state of FIG. 18, due to the force applied to each vertical arm portion 51V, the distal end portion of the arm side engagement projection 512A is elastically deformed while coming into contact with the arm side engagement hole 512B, and the other vertical arm portion Insert 51V inside. Then, the tip end portion of the arm side engagement protrusion 512A is hooked to the peripheral portion of the arm side engagement hole 512B inside the other vertical arm portion 51V.
Therefore, the arm-side engagement protrusion 512A and the arm-side engagement hole 512B regulate the rotation of the connecting portions 541 and 542 around the rotation shaft 543 and bend so that the vertical arm portions 51V overlap each other. It functions as an arm side lock mechanism 512 that maintains the state.
By the above operation, the frame-like member 5 is set in the housed state having a substantially W shape in plan view as shown in FIG.

Note that the screen 1 can be set from the retracted state to the extended state by operating in the reverse manner.
Then, for example, after the screen 1 is set in the extended state, as shown in FIG. 1 or 2, the support legs 8L and 8R are respectively attached to the positions of the horizontal hinge portions 53HL and 53HR on the lower side of the frame-like member 5. Thus, the screen 1 can be installed in a state of being erected from the floor surface.
In addition to being installed on the floor surface, a wire or the like is inserted into the ceiling suspension mounting portions 9L and 9R (FIGS. 1 and 2) provided on the upper end surface of the upper side arm portion 51H of the frame-shaped member 5. By connecting a wire or the like to the ceiling surface, the screen 1 can be installed even when suspended from the ceiling surface.

According to this embodiment described above, the following effects are obtained.
In the present embodiment, in the frame-shaped member 5 constituting the screen 1, the first locking mechanisms 57 </ b> H and 57 </ b> V <b> 1 are provided in each hinge portion 52. Accordingly, in the extended state, the first lock mechanisms 57H and 57V1 are set in the first lock state, and thus it is possible to suppress the bending of each arm portion 51. Therefore, in the extended state, the support state of the screen body 2 by the frame-like member 5 can be stabilized, and the flatness of the projection surface can be maintained well.

Further, by setting the first lock mechanisms 57H and 57V1 to the unlocked state, when the screen 1 is not used, the arm portions 51 can be bent by the hinge portions 52 and the frame-like member 5 can be folded. That is, when the screen 1 is not used, the frame-like member 5 can be reduced in size and the transportability can be improved.
Furthermore, the screen main body 2 is installed in the frame-shaped member 5 by arranging the horizontal hinge portion 53H, the first vertical hinge portion 54V, and the second vertical hinge portion 55V as the hinge portions 52 at the above positions. Thus, the frame-like member 5 can be folded, and the convenience can be improved.
Further, by adopting a simple structure of the first engagement protrusions 5312 and 5513 and the first engagement holes 5321B and 5521C as the first lock mechanisms 57H and 57V1, the manufacture thereof is facilitated, and each arm portion 51 is provided. By applying a force to the first locking mechanism 57H, 57V1 can be easily set to the first locked state and the unlocked state.

Further, the second vertical hinge portion 55V is provided with a second lock mechanism 57V2. Accordingly, in the retracted state, the second lock mechanism 57V2 is set to the second locked state, and therefore it is possible to prevent the arm portions 51H and 51V from extending. Therefore, for example, when the screen 1 is transported, the state in which the frame-like member 5 is folded (stored state) can be maintained, and the transportability can be further improved.
Further, an arm side locking mechanism 512 is provided in the vertical arm portion 51V. Thus, by adopting the arm-side lock mechanism 512 in addition to the second lock mechanism 57V2, it is possible to suitably achieve the effect of further improving the transportability described above.

  Further, each horizontal hinge portion 53HU disposed on the upper side is formed such that the protruding dimension of the protrusion 5312B is longer than each horizontal hinge portion 53HD disposed on the lower side. As a result, a force is applied to each lateral arm portion 51HU disposed on the upper side to bend each lateral arm portion 51H (FIG. 15), in addition to each lateral hinge portion 53HD disposed on the lower side. Even if the applied force is weak, the first locking mechanism 57H of each lateral hinge portion 53HD can be easily set from the locked state to the unlocked state. Therefore, each lateral arm 51H can be bent only by applying a force to each lateral arm 51H disposed on the upper side, and the operability of setting the screen 1 from the extended state to the retracted state can be improved.

Each horizontal hinge portion 53H is provided with a lock assist mechanism 58. As a result, in the extended state, the lock assist mechanism 58 is set to the first locked state, so that it is possible to suppress the bending of each lateral arm portion 51H. For this reason, by adopting the lock assist mechanism 58 in addition to the first lock mechanism 57H, the effect that the flatness of the projection surface described above can be favorably maintained can be suitably achieved.
Further, in the retracted state, the lock assist mechanism 58 is set to the second locked state, so that it is possible to suppress the extension of each lateral arm portion 51H. For this reason, the effect that the conveyance property mentioned above can be improved further can be aimed at suitably.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
In the embodiment, the second lock mechanism 57V2 is provided only in the second vertical hinge portion 55V, but may be provided in the other hinge portions 53H and 54V.
In the above-described embodiment, the protruding dimension of the protrusion 5312B is different between the horizontal hinge part 53HU disposed on the upper side and the horizontal hinge part 53HD disposed on the lower side. The protruding dimension of the protruding portion 5513B may be different between the first vertical hinge portion 54V disposed and the first vertical hinge portion 54V disposed on the right side.
In the embodiment, the configuration of the frame-shaped member 5 is not limited to the configuration described in the embodiment, that is, the number and shape of the arm portions 51, the number and shape of the hinge portions 52, and the arrangement positions, The shapes and arrangement positions of the lock mechanisms 57H, 57V1, and 57V2 are not limited to the configuration described in the above embodiment, and other numbers, shapes, and arrangement positions may be adopted.
In the above-described embodiment, the cylindrical member 3 is provided by sewing the screen main body 2, but is not limited thereto, and is configured separately from the screen main body 2. It may be configured to be connected to the edge.
In the embodiment, the screen body 2 is supported with respect to the frame-shaped member 5 by using the cylindrical member 3, the annular member 4, and the hooking member 6. However, the support structure of the screen body 2 is the same as that described above. In addition to the support structure described in the embodiment, other support structures may be adopted.
In the above-described embodiment, the screen body 2 is configured by a reflective screen, but is not limited thereto, and may be configured by a transmissive screen that transmits incident image light and displays a projected image.

  The screen of the present invention can maintain the flatness of the projection surface well when in use, and can improve the transportability when not in use, so that it can be used as a screen on which image light enlarged and projected from a projector or the like is projected.

The figure which shows schematic structure of the screen in this embodiment. The figure which shows schematic structure of the screen in the said embodiment. The figure which shows the structure of the screen main body in the said embodiment. The figure which shows the structure of the cylindrical member in the said embodiment. The figure which shows the structure of the annular member in the said embodiment. The perspective view which shows the structure of the frame-shaped member in the said embodiment. The perspective view which shows the structure of the frame-shaped member in the said embodiment. The perspective view which shows the structure of the 2nd vertical hinge part in the said embodiment. The perspective view which shows the structure of the 2nd vertical hinge part in the said embodiment. The perspective view which shows the internal structure of the 2nd vertical hinge part in the said embodiment. The perspective view which looked at the 1st vertical hinge part in the embodiment from the back side. The perspective view which looked at the horizontal hinge part in the said embodiment from the front side. The figure which shows the internal structure of the 2nd connection part in the said embodiment. The figure which shows the difference between each horizontal hinge part arrange | positioned in the upper side in the said embodiment, and each horizontal hinge part arrange | positioned below. The figure which showed in order the operation | movement which sets the screen in the said embodiment from an extended state to an accommodation state. The figure which showed in order the operation | movement which sets the screen in the said embodiment from an extended state to an accommodation state. The figure which showed in order the operation | movement which sets the screen in the said embodiment from an extended state to an accommodation state. The figure which showed in order the operation | movement which sets the screen in the said embodiment from an extended state to an accommodation state.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Screen, 2 ... Screen main body, 5 ... Frame-shaped member, 51 ... Arm part, 52 ... Hinge part, 57H, 57V1 ... 1st locking mechanism, 57V2 ... Second lock mechanism, 58... Lock assist mechanism, 531, 541, 551... First connection portion, 532, 542, 552... Second connection portion, 533. ), 543, 553... Rotating shaft, 5312, 5513... First engagement protrusion, 5321B, 5521C... First engagement hole (first engagement recess), 5322. , 5323 ... biasing member, 5331 ... first biasing recess, 5332 ... second biasing recess, 5514 ... second engagement protrusion, 5521E ... second engagement hole (Second engaging recess), LU, LD...

Claims (5)

A rectangular screen body having flexibility and projecting image light;
A plurality of arm portions connected to each other by a plurality of hinge portions so as to be able to bend and stretch; a frame-like member having a rectangular frame shape in a stretched state in which the plurality of arm portions are stretched; ,
The hinge part is
A first connecting part connected to one adjacent arm part and a second connecting part connected to the other arm part are connected so as to be rotatable around a rotation axis,
In each of the connecting parts,
A first engagement protrusion provided on one of the connection portions and protruding in the rotation direction, and a first engagement provided on the other connection portion and engaged with the first engagement protrusion by rotation of each of the connection portions. A screen having a mating recess, and provided with a first lock mechanism that maintains the stretched state by engaging the first engagement protrusion with the first engagement recess. The screen of claim 1,
In each of the connecting parts,
A second engagement protrusion provided on one of the connection portions and protruding in the rotation direction, and a second engagement provided on the other connection portion and engaged with the second engagement protrusion by rotation of each of the connection portions. A second locking mechanism is provided that maintains a retracted state in which the plurality of arm portions are bent by engaging the second engagement protrusion with the second engagement recess. Feature screen. The screen according to claim 1 or 2,
The plurality of hinge portions are
Of the pair of opposite end portions of the screen body, the hinge portion disposed on one first end side and the hinge portion disposed on the other second end side face each other. Arranged so that
The first engagement protrusion of the hinge portion disposed on the first end side has a longer projection dimension than the first engagement protrusion of the hinge portion disposed on the second end side. A screen characterized by being formed as follows. The screen according to any one of claims 1 to 3,
In each of the connecting parts,
A lock assist mechanism for assisting the first lock mechanism is provided;
The lock assist mechanism is
A cylindrical portion provided on one of the connecting portions, having a cylindrical shape extending along the rotating shaft, and rotating around the rotating shaft together with the one connecting portion;
A sliding portion provided on the other connecting portion, which slides on the outer peripheral surface of the columnar portion when each of the connecting portions is rotated, and an urging member that biases the sliding portion toward the columnar portion; A force member,
In a part of the outer peripheral surface of the cylindrical portion,
The screen according to claim 1, wherein a first urging concave portion that engages with the sliding portion is formed in the extended state. The screen according to claim 4.
In a part of the outer peripheral surface of the cylindrical portion,
A second urging concave portion that engages with the sliding portion in the storage state in which the plurality of arm portions are bent is formed.

Images