Screen

Abstract

To provide a screen which can improve heat insulation and allows a clear view of an outside scenery from inside a house.SOLUTION: A screen 10 is installed on one side in a forward direction D1 of a sash 3 that opens and closes a building opening 2, and comprises: an opening / closing member 20 that is made of a transparent and rigid material; and a switching mechanism 30 that, by moving the opening / closing member 20, switches between a closed state in which the building opening 2 is closed by the opening / closing member 20 and an open state in which the building opening 2 is opened.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a technology for a screen for opening and closing a building opening. [Background technology]

[0002] Conventionally, the technology of screens for opening and closing building openings has been publicly known, as described in Patent Document 1, for example.

[0003] The heat insulating screen described in Patent Document 1 is configured to switch between a state in which the building opening is closed and a state in which the building opening is half-open, using two screen doors (a main screen body and a swing door) connected by a hinge. The two screen doors are colored charcoal, silver gray, or a similar color. The two screen doors are positioned opposite a sliding glass door installed in the building opening. When the two screen doors and the glass door are closed, an insulating layer of air is formed between the screen doors and the glass door. This insulating layer can suppress the transfer of heat between the indoor and outdoor sides, improving insulation.

[0004] However, the two screen doors in Patent Document 1 are colored charcoal or the like. Therefore, when looking outside from inside with the two screen doors closed, the outside scenery appears colored, making it difficult to see the outside scenery as it is (clearly). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-16383 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and the problem it aims to solve is to provide a screen that can improve heat insulation and allows a clear view of the outside scenery from inside the house. [Means for solving the problem]

[0007] The problem to be solved by the present invention is as described above, and the means for solving this problem will now be described.

[0008] That is, in claim 1, the screen is installed on one side of the sash that opens and closes a building opening, in the forward direction, and is equipped with an opening / closing member made of a material that is transparent and rigid, and a switching mechanism that, by moving the opening / closing member, switches between a closed state in which the opening is closed by the opening / closing member and an open state in which the opening is open.

[0009] In claim 2, a plurality of the opening / closing members are provided in the front direction.

[0010] In claim 3, the device further comprises a first communication portion that connects the internal space formed between the multiple opening and closing members in the closed state and a space on one side of the internal space in the forward direction, and a second communication portion that connects the internal space and a space on the other side of the internal space in the forward direction.

[0011] In claim 4, the first communicating portion and the second communicating portion are formed at different positions when viewed from the front direction.

[0012] In claim 5, the switching mechanism includes a guide portion that guides the plurality of opening and closing members in the up and down direction, and a connection portion that connects the plurality of opening and closing members to one another.

[0013] In claim 6, the air conditioner further comprises a suppression portion that suppresses air leakage from a portion of the internal space that is different from the first communication portion and the second communication portion.

[0014] In claim 7, the multiple opening / closing members are composed of multiple members arranged in the vertical direction, the switching mechanism switches from the closed state to the open state by moving the multiple members relative to each other, and the suppression unit has a first blocking unit that blocks the space between the multiple members in the closed state.

[0015] In claim 8, the guide portion is formed with an opposing surface that faces the multiple opening / closing members in the closed state, and the suppression portion is provided with a second blocking portion that blocks the space between the multiple opening / closing members and the opposing surface in the closed state.

[0016] In a ninth aspect, the suppressing section further includes a pressing section that presses the plurality of opening / closing members against the second closing section in the closed state.

[0017] In claim 10, the opening / closing member is formed with an insertion portion through which the connection portion is inserted, and the suppression portion further includes a third blocking portion that blocks the space between the insertion portion and the connection portion in the blocked state. [Effects of the Invention]

[0018] The present invention has the following effects.

[0019] In claim 1, the heat insulation can be improved and the outside scenery can be seen clearly from inside the room.

[0020] According to claim 2, the heat insulating property can be effectively improved.

[0021] According to claim 3, the decrease in ventilation performance can be suppressed.

[0022] According to claim 4, it is possible to prevent indoor heat from escaping through openings in the building.

[0023] In claim 5, the connecting portion allows the plurality of opening and closing members to be raised and lowered together.

[0024] According to claim 6, it is possible to effectively prevent indoor heat from escaping through the openings in the building.

[0025] According to claim 7, it is possible to reduce the installation space for the opening and closing members, and also to prevent air from leaking between the multiple members arranged vertically in the closed state.

[0026] According to claim 8, it is possible to prevent air from leaking between the opening / closing member and the opposing surface.

[0027] According to claim 9, it is possible to effectively prevent air from leaking between the plurality of opening / closing members and the opposing surfaces.

[0028] According to claim 10, it is possible to prevent air from leaking between the plurality of opening and closing members and the connecting portion. [Brief explanation of the drawings]

[0029] [Figure 1] FIG. 1 is a cross-sectional view taken along a viewing direction showing a screen according to an embodiment of the present invention. [Figure 2] Also, a plan cross-sectional view. [Figure 3] FIG. 10 is a cross-sectional view taken along the viewing direction showing the screen in an open state. [Figure 4] FIG. [Figure 5] FIG. 4 is an enlarged cross-sectional view taken along the viewing direction showing a part of the screen. [Figure 6] FIG. 6 is an enlarged view of a portion P1 shown in FIG. 5. [Figure 7] FIG. 6 is an enlarged view of a portion P2 shown in FIG. 5. [Figure 8] FIG. 4 is a plan cross-sectional view showing the opening / closing member, the fixing member, and the rail. [Figure 9] AA cross section. [Figure 10]FIG. 4 is a cross-sectional view taken along the front direction showing the opening / closing member and the joint portion in the closed state. [Figure 11] 1A is a cross-sectional view showing a state in which the opening / closing member descends along the rail, FIG. 1B is a cross-sectional view showing a state in which the fixing member abuts against the protrusion, and FIG. 1C is a cross-sectional view showing the opening / closing member in a closed state. DETAILED DESCRIPTION OF THE INVENTION

[0030] In the following description, the up and down directions are defined according to the arrows in the drawings. A screen 10 according to one embodiment of the present invention will be described below.

[0031] As shown in Figures 1 and 3, the screen 10 opens and closes the building opening 2 separately from the sash 3 of the building 1. First, the configuration of the building opening 2 will be described. The building opening 2 shown in Figure 1 is a portion that connects the indoor space K1 and outdoor space K2 of the building 1. The building opening 2 is formed, for example, by appropriately opening the exterior wall of the building 1. A frame (not shown) is provided on the inner surface of the building opening 2. Note that the direction D1 shown in the figures is the front direction D1. The front direction D1 is the depth direction of the building opening 2. Furthermore, the direction D2 shown in the figures (see Figure 2) is the sight direction D2. The sight direction D2 is a direction perpendicular to the sight direction D1 and the up-down direction.

[0032] A sash 3 is provided in the building opening 2. The sash 3 opens and closes the building opening 2. As shown in Figures 1 and 2, the sash 3 is composed of a sliding sash having a frame 3a and multiple (two in this embodiment) glass doors 3b.

[0033] The frame body 3a is fixed to the inner surface of the building opening 2. The frame body 3a is formed in a shape (rectangular ring) that follows the inner surface of the building opening 2. The glass door 3b is fitted into the frame body 3a and supported so as to be slidable in the viewing direction D2.

[0034] The sash 3 of this embodiment is provided with an introduction mechanism (not shown) that can introduce outside air. The introduction mechanism is equipped with a through-hole that penetrates the sash 3 in the projection direction D1, and an opening / closing unit that opens and closes the through-hole. Therefore, even when the building opening 2 is closed by the sash 3, outside air can be introduced into the building opening 2 as long as the through-hole is open. In this embodiment, outside air is introduced into the building opening 2 from the upper end of the sash 3.

[0035] Next, the configuration of the screen 10 will be described. The screen 10 is installed inside the building opening 2 relative to the sash 3 (on one side in the prospective direction D1), and opens and closes the building opening 2. Below, the configuration of the screen 10 will be described based on the state in which the building opening 2 is closed (the state shown in FIG. 1). The screen 10 comprises an opening / closing member 20 and a switching mechanism 30.

[0036] The opening / closing member 20 is a member that opens and closes the building opening 2. The opening / closing member 20 has multiple plate-like members 21 lined up vertically. When viewed from the front direction D1, the plate-like members 21 are formed in a rectangular shape that extends long in the sight direction D2 (not shown). As shown in FIG. 2, the plate-like members 21 are formed from one side to the other of the building opening 2 in the sight direction D2. As shown in FIG. 1, the vertical width of the plate-like members 21 is smaller than the vertical width of the building opening 2. For this reason, multiple plate-like members 21 are arranged so as to span from the upper end to the lower end of the building opening 2.

[0037] The plate-like member 21 is made of a transparent material. In this embodiment, transparency means that the plate-like member 21 is transparent (colorless and transparent) to such an extent that when the plate-like member 21 is viewed, it appears as if the plate-like member 21 does not exist. For example, the plate-like member 21 is made of a material that is more transparent than the rail 33 described below or a material that is more transparent than the glass of the glass door 3b.

[0038] The plate-like member 21 is made of a rigid material. In this embodiment, rigidity means that the plate-like member 21 has such high strength that it will not bend elastically even when subjected to a predetermined external force when the building opening 2 is closed. For example, the plate-like member 21 is made of a material that will not bend even when pushed by hand or exposed to the wind. Examples of the plate-like member 21 having the above properties (transparency and rigidity) include a transparent acrylic plate, a glass plate, a polycarbonate plate, etc.

[0039] In this embodiment, two opening / closing members 20 are provided along the front-view direction D1. Hereinafter, the two opening / closing members 20 will be referred to as a "pair of opening / closing members 20." Of the pair of opening / closing members 20, the opening / closing member 20 on the indoor side will be referred to as the "indoor opening / closing member 20A." Furthermore, the opening / closing member 20 on the outdoor side will be referred to as the "outdoor opening / closing member 20B." The pair of opening / closing members 20 are arranged at a distance from each other in the front-view direction D1. Therefore, in this embodiment, a space is formed between the pair of opening / closing members 20. Hereinafter, this space will be referred to as an "internal space K3."

[0040] As described above, in this embodiment, outside air is introduced into the building opening 2 from the upper end of the sash 3. The pair of opening / closing members 20 are configured to guide the outside air introduced from the sash 3 into the interior of the building via the internal space K3. More specifically, the screen 10 is provided with a first communication portion 20a that penetrates the indoor-side opening / closing member 20A along the projection direction D1, and a second communication portion 20b that penetrates the outdoor-side opening / closing member 20B along the projection direction D1. The first communication portion 20a and the second communication portion 20b are formed, for example, in the shape of a slit extending along the projection direction D2.

[0041] The first communication portion 20a is formed in the plate-like member 21 arranged at the uppermost position on the indoor side. The first communication portion 20a allows communication between the indoor space K1 and the internal space K3. The second communication portion 20b is formed in the plate-like member 21 arranged at the lowermost position on the outdoor side. The second communication portion 20b allows communication between the space between the sash 3 and the screen 10 and the internal space K3.

[0042] The black arrows in FIG. 4 indicate the circulation path of outside air through the building opening 2. As shown in FIG. 4, outside air introduced from the upper end of the sash 3 moves downward between the sash 3 and the screen 10 and is introduced into the internal space K3 through the second communication portion 20b. The outside air moves upward through the internal space K3. At this time, the outside air recovers heat (see the white arrows in FIG. 4) transferred to the internal space K3 through the indoor-side opening / closing member 20A, and is introduced into the indoor space K1 through the first communication portion 20a. With this configuration, heat that has escaped from the indoor space K1 toward the outdoor space K2 can be returned to the indoor space K1, thereby reducing heat loss at the building opening 2.

[0043] FIG. 5 illustrates a portion of a pair of opening / closing members 20. More specifically, the illustration shows two plate-shaped members 21 arranged vertically between connecting portions 32 of the indoor opening / closing member 20A, which are located on the indoor side, and two plate-shaped members 21 arranged vertically between connecting portions 32 of the outdoor opening / closing member 20B. In the following explanation, of the upper and lower plate-shaped members 21 shown in FIG. 5, the upper plate-shaped member 21 will be referred to as the upper plate-shaped member 21, and the lower plate-shaped member 21 will be referred to as the lower plate-shaped member 21. FIG. 6 also illustrates an enlarged view of the connecting portion (portion P1 shown in FIG. 5) of the upper and lower plate-shaped members 21. As shown in FIGS. 5 and 6, the upper and lower plate-shaped members 21 are connected to each other by a joint portion 31, which will be described later.

[0044] 6, protrusions 22 are formed on the upper and lower plate-shaped members 21. The protrusion 22 of the upper plate-shaped member 21 is formed so as to protrude downward from the lower end surface of the upper plate-shaped member 21. The protrusion 22 of the lower plate-shaped member 21 is formed so as to protrude upward from the upper end surface of the lower plate-shaped member 21. The upper and lower protrusions 22 overlap each other when viewed from the projection direction D1.

[0045] The upper and lower protrusions 22 are formed at positions offset from each other in the projection direction D1 so as not to interfere with each other when the building opening 2 is opened or closed by the screen 10. A first elastic member 23 is provided between the upper and lower protrusions 22. The first elastic member 23 closes the gap between the upper and lower protrusions 22. For example, the first elastic member 23 is attached to both the upper and lower protrusions 22.

[0046] The protrusions 22 are also formed on the upper end surface of the upper plate-like member 21 and the lower end surface of the lower plate-like member 21. The protrusions 22 are appropriately formed so that connection portions 32 (members extending in the projection direction D1) can be arranged thereon. For example, a plurality of protrusions 22 are formed on the upper end surface of the upper plate-like member 21 at intervals in the projection direction D2 (not shown). Similarly, a plurality of protrusions 22 are formed on the lower end surface of the lower plate-like member 21 at intervals in the projection direction D2 (not shown). With this configuration, the connection portions 32 can be arranged between the protrusions 22.

[0047] 1 and 3, the switching mechanism 30 moves the opening / closing member 20 to switch between a closed state (the state shown in FIG. 1) in which the opening part 2 is closed by the opening / closing member 20, and an open state (the state shown in FIG. 3) in which the opening part 2 is open. The switching mechanism 30 includes a joint part 31, a connecting part 32, a rail 33, a fixing member 34 (see FIG. 8), and an operating member 35. Note that the joint part 31 is shown schematically in FIGS. 1 and 3.

[0048] As shown in FIG. 5, the joint portion 31 connects the upper and lower plate-like members 21 to each other. The joint portion 31 is made of a transparent material. The joint portion 31 connecting the outdoor-side plate-like members 21 is disposed symmetrically in the projection direction D1 with the joint portion 31 connecting the indoor-side plate-like members 21. For this reason, the following describes the configuration of the joint portion 31 using the indoor-side joint portion 31 as an example, and a description of the outdoor-side joint portion 31 is omitted. As shown in FIG. 6, the joint portion 31 includes a shaft portion 31a, a cylindrical portion 31b, and a protruding portion 31c.

[0049] The shaft portion 31a is formed in a cylindrical shape with its axial direction facing the finding direction D2. The cylindrical portion 31b is a portion that is fitted onto the shaft portion 31a. The cylindrical portion 31b can rotate relative to the shaft portion 31a. A plurality of cylindrical portions 31b (not shown) are provided along the finding direction D2.

[0050] The protruding portion 31c is a portion that protrudes from the cylindrical portion 31b. The protruding portion 31c is provided on each of the multiple cylindrical portions 31b. Of these, some of the protruding portions 31c protrude upward from the cylindrical portion 31b and are fixed to the upper plate-like member 21. The remaining protruding portions 22 protrude downward from the cylindrical portion 31b and are fixed to the lower plate-like member 21. In this way, the joint portion 31 connects the upper and lower plate-like members 21 so that they can rotate (swing) relative to each other around the shaft portion 31a.

[0051] As shown in FIG. 5, the joint unit 31 of this embodiment includes a first joint unit 31A disposed outside the internal space K3 and a second joint unit 31B disposed inside the internal space K3. In this embodiment, the first joint unit 31A and the second joint unit 31B are alternately disposed from the top of the screen 10 (see FIG. 1). The uppermost first joint unit 31A is fixed to a rail 33 (described later) and is immovable in the vertical direction. The other joint units 31A and 31B are movable in the vertical direction. In this embodiment, the first joint unit 31A is immovable in the projection direction D1, and the second joint unit 31B is movable in the projection direction D1. Thus, in this embodiment, the second joint unit 31B is configured to be displaced in the projection direction D1 when the opening / closing member 20 rotates.

[0052] As shown in Fig. 6, the joint portion 31 of this embodiment supports the plate-shaped member 21 in a slightly oblique orientation when viewed from the front view direction D2. The straight lines L1 and L2 shown in Fig. 6 indicate the orientation of the plate-shaped member 21 when viewed from the front view direction D2. For the sake of explanation, Fig. 6 exaggerates the inclination angle of the straight lines L1 and L2 relative to the vertical direction. As shown by the straight lines L1 and L2, the joint portion 31 supports the plate-shaped member 21 in a slightly inclined orientation outward in the front view direction D1 (toward the indoor space K1 in Fig. 6) with respect to the internal space K3 as it moves from the first joint portion 31A (see Fig. 5) to the second joint portion 31B.

[0053] The connecting portion 32 shown in FIGS. 5 and 7 connects the pair of opening / closing members 20 to each other. The connecting portion 32 is formed to extend in the forward direction D1. For example, the connecting portion 32 is formed elongated with its longitudinal direction facing the forward direction D1. The connecting portion 32 is made of a transparent material. Both ends of the connecting portion 32 are connected to the first joint portion 31A on the indoor side and the outdoor side, respectively. For example, both ends of the connecting portion 32 are fixed to the shaft portion 31a of the first joint portion 31A (not shown). In this way, the connecting portion 32 moves integrally with the first joint portion 31A and is coupled to the first joint portion 31A so as not to rotate integrally with the plate-like member 21, and connects the pair of opening / closing members 20 to each other via the first joint portion 31A. The pair of opening / closing members 20 can move integrally by the connecting portion 32.

[0054] Further, a second elastic member 24 is provided between the connection portion 32 and the plate-like member 21. The second elastic member 24 seals the gap between the connection portion 32 and the plate-like member 21. The second elastic member 24 is attached to the plate-like member 21, for example.

[0055] The rail 33 shown in Figures 1 and 2 guides the opening / closing member 20 in the up and down direction. The rail 33 is formed in a longitudinal shape extending up and down. The rail 33 is formed so as to extend from the lower end to the upper end of the building opening 2. The rail 33 is made of, for example, a metal material. In this embodiment, the rail 33 is made of aluminum. As shown in Figure 2, the rail 33 is fixed to both ends of the building opening 2 in the view direction D2. A pair of rails 33 are provided in the view direction D1 so as to be able to guide each of the pair of opening / closing members 20. Note that the rail 33 is shown in a simplified form in Figure 2. Furthermore, the rail 33 is not shown in Figures 5 to 7.

[0056] Fig. 8 shows a plan cross-sectional view of the rail 33 that guides the outdoor-side opening / closing member 20B. The rail 33 that guides the indoor-side opening / closing member 20A is disposed symmetrically with the outdoor-side rail 33 in the projection direction D1. For this reason, the configuration of the rail 33 will be described below using the outdoor-side rail 33 as an example, and a description of the indoor-side rail 33 will be omitted. As shown in Fig. 8, the rail 33 includes a web 33a and a plurality of flanges 33b to 33d.

[0057] The web 33a is a plate-like portion arranged with its plate surface facing the front view direction D2. The web 33a is formed from the lower end to the upper end of the building opening 2. The flanges 33b to 33d are plate-like portions that protrude from the web 33a toward the inside of the building opening 2 in the front view direction D2 (toward the opening / closing member 20B shown in FIG. 8). The flanges 33b to 33d are arranged with their plate surfaces facing the front view direction D1. The flanges 33b to 33d are formed from the upper end to the lower end of the web 33a. The flanges 33b to 33d are arranged side by side in the front view direction D1.

[0058] Hereinafter, the flanges will be referred to as the "first flange 33b," "second flange 33c," and "third flange 33d," in order from the flange farthest from the internal space K3 in the projection direction D1. The outdoor-side opening / closing member 20B is disposed between the first flange 33b and the third flange 33d in the projection direction D1.

[0059] 9, a convex portion 33e is formed at the vertical midpoint of the first flange 33b, protruding toward the outdoor-side opening / closing member 20B when viewed from the viewing direction D2. A plurality of convex portions 33e are formed on the first flange 33b along the vertical direction. For example, the convex portions 33e are formed at the top, the vertical midpoint, and the bottom of the first flange 33b.

[0060] As shown in Fig. 8, the third flange 33d protrudes further inward in the viewing direction D2 of the building opening 2 than the first flange 33b and the second flange 33c. This protruding portion faces the outdoor-side opening / closing member 20B. An elastic member 33g is attached to a surface 33f of the third flange 33d that faces the opening / closing member 20B. The elastic member 33g is provided from the upper end to the lower end of the third flange 33d.

[0061] The fixing member 34 is a member fixed to a pair of opening and closing members 20. The fixing member 34 fixed to the indoor opening and closing member 20A is disposed symmetrically in the projection direction D1 with the fixing member 34 fixed to the outdoor opening and closing member 20B. For this reason, the configuration of the fixing member 34 will be described below using the outdoor fixing member 34 as an example, and a description of the indoor fixing member 34 will be omitted. The fixing member 34 has a first extending portion 34a and a second extending portion 34b.

[0062] The first extending portion 34a is a portion that extends along the front direction D2. The first extending portion 34a is disposed outside the internal space K3 (outside the front direction D1). As shown in FIG. 9, the first extending portion 34a abuts against the protrusion 33e of the rail 33. The second extending portion 34b is a portion that extends along the front direction D1. As shown in FIG. 8, the second extending portion 34b is formed in the middle of the first extending portion 34a and is fixed to the outdoor-side opening / closing member 20B.

[0063] One end of the first extending portion 34a is disposed between the first flange 33b and the second flange 33c in the projection direction D1. As described above, the outdoor-side opening / closing member 20B faces the third flange 33d (opposing surface 33f). In this way, the outdoor-side opening / closing member 20B is sandwiched between the first flange 33b and the third flange 33d via the fixing member 34. With this configuration, the opening / closing member 20B can be raised and lowered (guided by the rail 33) without the entire opening / closing member 20B being displaced in the projection direction D1 beyond the first flange 33b and the third flange 33d.

[0064] Although not shown in the drawings, the fixing members 34 are fixed to both ends of the outdoor-side opening / closing member 20B in the viewing direction D2. A plurality of fixing members 34 are provided along the vertical direction. In this embodiment, the number of fixing members 34 provided is the same as the number of protrusions 33e of the first flange 33b (three). The three fixing members 34 are arranged vertically at the same intervals as the protrusions 33e.

[0065] The fixing member 34 is appropriately positioned so as not to interfere with the rail 33 when the opening / closing member 20B rotates (for example, so as not to be displaced in the forward direction D1). For example, the fixing member 34 is positioned at the same height as the first joint part 31A. In this way, the fixing member 34 of this embodiment is configured so as not to be displaced in the forward direction D1 when the opening / closing member 20B rotates.

[0066] The configuration for raising and lowering the opening / closing member 20B along the rail 33 is not limited to this embodiment and can be modified as appropriate. For example, in this embodiment, the first joint part 31A is disposed outside the internal space K3 (on the same side as the fixed member 34) (see FIG. 5). Therefore, by extending the first joint part 31A up to the rail 33, it is also possible to raise and lower the opening / closing member 20B along the rail 33.

[0067] 1 is a member for operating the pair of opening / closing members 20 to raise and lower. The operating members 35 are provided on one side and the other side of the screen 10 in the viewing direction D2 (not shown). The operating member 35 is connected to, for example, the lowest plate-like member 21, and is formed so as to protrude from the plate-like member 21 into the indoor space K1. With a portion of the operating member 35 protruding toward the indoor space K1 in this way, a user of the screen 10 (for example, a resident of the building 1) can easily raise and lower the opening / closing members 20 from the indoor space K1.

[0068] The following describes the operation of switching between a closed state in which the building opening 2 is closed and an open state in which the building opening 2 is open. First, the operation of switching from the closed state to the open state will be described.

[0069] When switching from the closed state to the open state, the user lifts the operating member 35 shown in Fig. 1 to a predetermined position. At this time, the pair of opening / closing members 20, the first joint part 31A and the second joint part 31B rise while rotating relative to each other.

[0070] As described above, in this embodiment, the second joint part 31B is configured to be displaced in the forward direction D1 when the opening / closing member 20 rotates. Furthermore, the plate-like member 21 is supported in a position that is slightly inclined outward in the forward direction D1 with respect to the internal space K3 as it moves from the first joint part 31A to the second joint part 31B (see FIG. 6).

[0071] Therefore, when the operating member 35 is lifted upward, the first joint part 31A rises, and the second joint part 31B rises while being displaced outward in the forward direction D1. In this way, as shown in Fig. 10, the pair of opening / closing members 20, the first joint part 31A, and the second joint part 31B are moved relative to each other without interfering with each other, and are folded above the building opening 2. In this way, the closed state is switched to the open state. In this embodiment, switching to the open state opens approximately 84% of the building opening 2.

[0072] Although not shown in the drawings, the switching mechanism 30 is configured to maintain an open state. For example, the switching mechanism 30 can maintain the open state by fixing the operating member 35 to the rail 33.

[0073] Next, the operation when switching from the open state to the closed state will be described. When switching from the open state to the closed state, the user lowers the operating member 35. At this time, the pair of opening / closing members 20, the first joint part 31A, and the second joint part 31B move in the opposite direction to when switching from the closed state to the open state.

[0074] 11(a), the fixing member 34 is lowered along the first flange 33b of the rail 33. As shown in FIG. 11(b), the fixing member 34 comes into contact with the protrusion 33e of the first flange 33b. The fixing member 34 is further lowered from this state. In this manner, the fixing member 34 and the pair of opening / closing members 20 are pressed toward the third flange 33d by the protrusion 33e, and are lowered while being displaced toward the third flange 33d. Note that, for the sake of convenience in explanation, in FIG. 11, the pair of opening / closing members 20 are shown lowering without rotating, but in reality, the pair of opening / closing members 20 rotate as they descend.

[0075] As shown in Fig. 1, the screen 10 is switched to the closed state when the lowest plate-like member 21 is lowered to a predetermined position (for example, a position where it abuts against the underside of the building opening 2). In this embodiment, the closed state is maintained by the weight of the opening / closing members 20 and the like. In addition, the pair of opening / closing members 20 are maintained in a state displaced toward the third flange 33d in the closed state, as shown in Fig. 11(c).

[0076] By closing the building opening 2 with a pair of opening / closing members 20 in this way, it is possible to obtain the performance of a multiple sash without installing an additional sash at the building opening 2. More specifically, sound insulation can be improved. Furthermore, the opening / closing members 20 can suppress the transfer of heat between the indoor space K1 and the outdoor space K2 via the building opening 2. This improves the thermal insulation at the building opening 2, and ultimately improves the thermal insulation of the building 1.

[0077] Furthermore, since the opening / closing member 20 has rigidity, wrinkles (areas that impair visibility) are unlikely to occur in the opening / closing member 20. Furthermore, since the opening / closing member 20 is transparent, when the outside scenery is viewed from the indoor space K1 in the closed state, the outside scenery does not appear to be tinted. Therefore, the outside scenery can be clearly seen from the indoor space K1 in the closed state.

[0078] Furthermore, the screen 10 of this embodiment is provided with a plurality of elastic members 23, 24, 33g. The elastic members 23 and the like can prevent air from leaking from the internal space K3 through portions other than the first communication portion 20a and the second communication portion 20b (portions that penetrate the plate-like member 21 in the forward direction D1) in the closed state. This allows heat that has escaped from the indoor space K1 to be effectively returned to the outdoors (see FIG. 4).

[0079] More specifically, as shown in Figures 6 and 10, first elastic members 23 are provided on the upper and lower protrusions 22. The first elastic members 23 are spaced apart from each other in the open state shown in Figure 10, and gradually approach each other as the plate-shaped member 21 rotates when the open state is switched to the closed state. In addition, the first elastic members 23 are held in a state where they are in contact with each other and elastically deformed in the closed state shown in Figure 6. By sealing the gap between the upper and lower plate-shaped members 21 (protrusions 22) with the first elastic members 23 in this way, airtightness at that location can be ensured and air leakage can be suppressed.

[0080] This makes it easier for outside air to flow from the first communication section 20a to the second communication section 20b as planned (following the path shown in Figure 4), allowing heat to be effectively recovered by the outside air and returned to the indoor space K1.

[0081] As shown in FIG. 7 , second elastic members 24 are provided at the ends of the pair of opening / closing members 20 on the connection portion 32 side (upper ends in FIG. 7 ). As described above, the connection portion 32 does not rotate integrally with the plate-shaped member 21. Therefore, the second elastic members 24 are disposed apart from the connection portion 32 in the open state (see the second elastic members 24 indicated by the two-dot chain line in FIG. 7 ). When the plate-shaped member 21 rotates from the open state to the closed state, the second elastic members 24 gradually approach the connection portion 32. In addition, in the closed state shown in FIG. 7 , the second elastic members 24 are held in a state of being in contact with the connection portion 32 and elastically deformed. By sealing the gap between the upper and lower plate-shaped members 21 and the connection portion 32 with the second elastic members 24 in this way, it is possible to ensure airtightness at that location (to prevent air leakage).

[0082] 8, an elastic member 33g is provided on the third flange 33d of the rail 33. As shown in FIG. 11(c), the pair of opening / closing members 20 are held in a state displaced toward the third flange 33d in the closed state. With this configuration, in the closed state, the pair of opening / closing members 20 can be pressed against the elastic member 33g, causing the elastic member 33g to elastically deform. Therefore, the elastic member 33g can close the gap between the opposing surface 33f of the rail 33 and the opening / closing member 20, ensuring airtightness in that area.

[0083] As described above, the screen 10 of this embodiment is a screen 10 that is installed on one side (in this embodiment, on the indoor side) in the projection direction D1 of the sash 3 that opens and closes the building opening 2, and is equipped with an opening / closing member 20 made of a material that is permeable and rigid, and a switching mechanism 30 that, by moving the opening / closing member 20, switches between a closed state in which the building opening 2 is closed by the opening / closing member 20 and an open state in which the building opening 2 is open.

[0084] By configuring it in this way, it is possible to improve the heat insulation and also to have a clear view of the outside scenery from the indoor space K1.

[0085] Moreover, a plurality of the opening / closing members 20 are provided in the front direction D1 (see FIG. 1).

[0086] With this configuration, a plurality of members (opening and closing members 20) that suppress the transfer of heat between the indoor space K1 and the outdoor space K2 can be installed, thereby effectively improving the thermal insulation.

[0087] The screen 10 further includes a first communication portion 20a that connects the internal space K3 formed between the multiple opening and closing members 20 in the closed state with the space (indoor space K1) on one side of the internal space K3 in the forward direction D1, and a second communication portion 20b that connects the internal space K3 with the space (space between the sash 3 and the screen 10) on the other side of the internal space K3 in the forward direction D1 (see Figure 1).

[0088] By configuring in this way, it is possible to prevent the introduction of outside air through the sash 3 from being obstructed by the screen 10, and to prevent a decrease in ventilation performance.

[0089] Moreover, the first communication portion 20a and the second communication portion 20b are formed at different positions when viewed from the front direction D1. In this embodiment, as an example, the first communication portion 20a and the second communication portion 20b are described, which are located at different positions in the up-down direction (see FIG. 4).

[0090] By configuring in this way, it is possible to prevent heat from escaping from the indoor space K1 through the building opening 2. 4, in this embodiment, the outside air introduced into the building opening 2 from the sash 3 flows downward before being introduced into the internal space K3. By preventing the outside air from being introduced from the sash 3 into the internal space K3 in the shortest distance (along the prospective direction D1), the heat transferred from the internal space K3 to the outdoors can be effectively recovered by the outside air and returned to the indoor space K1, thereby effectively suppressing the escape of heat from the indoor space K1 through the building opening 2.

[0091] The switching mechanism 30 also includes rails 33 (guide portions) that guide the plurality of opening / closing members 20 in the up and down direction, and connection portions 32 that connect the plurality of opening / closing members 20 to one another.

[0092] With this configuration, the plurality of opening / closing members 20 can be raised and lowered together by the connecting portion 32. Furthermore, when the plurality of opening / closing members 20 are manually raised and lowered as in this embodiment, the opening / closing members 20 can be raised and lowered quickly.

[0093] In addition, it further includes a suppression section (first elastic member 23, second elastic member 24, and elastic member 33g) that suppresses air leakage from parts of the internal space K3 that are different from the first communicating section 20a and the second communicating section 20b.

[0094] By configuring in this way, it is possible to effectively prevent indoor heat from escaping through the building opening 2.

[0095] The plurality of opening / closing members 20 are composed of a plurality of members (plate-shaped members 21) arranged in the vertical direction, and the switching mechanism 30 switches from the closed state to the open state by moving the plurality of members relative to each other, and the suppression portion is provided with a first elastic member 23 (first blocking portion) that blocks the space between the plurality of members in the closed state (see Figure 6).

[0096] By configuring it in this way, the opening / closing member 20 can be made small in size when in the open state. For example, as shown in Fig. 3, multiple members (plate-shaped members 21) can be folded. This allows for a reduction in the installation space required for the opening / closing member 20. In addition, air leakage from between the multiple members (plate-shaped members 21) arranged vertically when in the closed state can be suppressed.

[0097] In addition, the rail 33 is formed with an opposing surface 33f that faces the multiple opening / closing members 20 in the closed state, and the suppression portion is equipped with an elastic member 33g (second closing portion) that blocks the space between the multiple opening / closing members 20 and the opposing surface 33f in the closed state (see Figure 8).

[0098] With this configuration, it is possible to prevent air from leaking between the opening / closing member 20 and the opposing surface 33f.

[0099] Moreover, the suppressing portion further includes a first extending portion 34a and a protruding portion 33e (pressing portion) that presses the plurality of opening / closing members 20 against the elastic member 33g in the closed state (see FIG. 11).

[0100] With this configuration, the gap between the opening / closing member 20 and the opposing surface 33f can be effectively blocked, and air leakage from between the opening / closing member 20 and the opposing surface 33f can be effectively suppressed.

[0101] The suppressing portion further includes a second elastic member 24 (third blocking portion) that blocks the gap between the plurality of opening / closing members 20 and the connecting portion 32 in the blocked state (see FIG. 7).

[0102] With this configuration, air leakage between the plurality of opening and closing members 20 and the connection portion 32 can be suppressed.

[0103] The rail 33 according to this embodiment is one embodiment of a guide portion according to the present invention. Moreover, the first elastic member 23, the second elastic member 24, and the elastic member 33g according to this embodiment are one embodiment of the suppression portion according to the present invention. The first elastic member 23 according to this embodiment is one embodiment of a first blocking portion according to the present invention. The elastic member 33g according to this embodiment is one embodiment of the second blocking portion according to the present invention. The first extending portion 34a and the protruding portion 33e according to this embodiment are one embodiment of the pressing portion according to the present invention. The second elastic member 24 according to this embodiment is one embodiment of a third blocking portion according to the present invention.

[0104] Although the embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0105] For example, in this embodiment, two (a pair) opening / closing members 20 are installed along the projection direction D1, but the number of opening / closing members 20 is not particularly limited. The number of opening / closing members 20 may be changed according to the number of sashes 3 installed. For example, when two sashes 3 are installed (in the case of a double sash), one opening / closing member 20 may be installed. By installing the opening / closing members 20 in this way according to the number of sashes 3 installed, it is possible to obtain appropriate sound insulation performance, heat insulation performance, etc. according to the specifications of the building 1.

[0106] When three or more opening / closing members 20 are installed at intervals in the forward direction D1, an internal space K3 is formed between each two opening / closing members 20 adjacent to each other in the forward direction D1. When multiple internal spaces K3 are formed in this way, it is desirable to provide communication sections so that the internal spaces K3 communicate with each other. This makes it possible to suppress a decrease in ventilation performance when three or more opening / closing members 20 are installed.

[0107] Furthermore, although the screen 10 is arranged on the indoor side of the sash 3, the arrangement of the screen 10 is not limited to this embodiment. For example, if there is an installation space on the outdoor side of the sash 3, the screen 10 can also be arranged on the outdoor side of the sash 3.

[0108] Furthermore, the switching mechanism 30 may be configured to switch between the closed state and the open state by moving the opening / closing member 20, and the detailed configuration is not limited to that of this embodiment. For example, the switching mechanism 30 may switch between the closed state and the open state by a method other than folding. For example, the switching mechanism 30 may switch from the closed state to the open state by winding up the opening / closing member 20, and may also switch from the open state to the closed state by unwinding the wound opening / closing member 20. Furthermore, the direction in which the opening / closing member 20 is moved is not limited to that of this embodiment (the up-down direction). For example, the switching mechanism 30 may move the opening / closing member 20 in the viewing direction D2.

[0109] Furthermore, although the pair of opening and closing members 20 are connected to each other and raised and lowered integrally, it is also possible to raise and lower the opening and closing members 20 separately.

[0110] In this embodiment, the first communication portion 20a is formed at the upper end of the indoor-side opening / closing member 20A (see FIG. 1), but the first communication portion 20a may be formed at another position that allows communication between the indoor space K1 and the internal space K3. In this embodiment, the second communication portion 20b is formed at the lower end of the outdoor-side opening / closing member 20B, but the second communication portion 20b may be formed at another position that allows communication between the space between the sash 3 and the screen 10 and the internal space K3.

[0111] In this embodiment, the gap between the upper and lower protrusions 22 is blocked by the first elastic members 23 provided on both the upper and lower protrusions 22 (see FIG. 6), but the configuration of the first blocking portion according to the present invention is not limited to this embodiment. For example, the gap between the upper and lower protrusions 22 may be blocked by an elastic member provided on only one of the upper and lower protrusions 22.

[0112] In this embodiment, the gap between the rail 33 and the opening / closing member 20 is closed by the elastic member 33g of the rail 33 (see FIG. 8), but the configuration of the second closing section according to the present invention is not limited to this embodiment. For example, the gap between the rail 33 and the opening / closing member 20 may be closed by elastic members provided on both the rail 33 and the opening / closing member 20. Also, for example, the gap between the rail 33 and the opening / closing member 20 may be closed by an elastic member provided between the second flange 33c and the opening / closing member 20.

[0113] In this embodiment, the gap between the connection part 32 and the opening / closing member 20 is blocked by the second elastic member 24 provided on the opening / closing member 20 (see FIG. 7), but the configuration of the third blocking part according to the present invention is not limited to this embodiment. For example, the gap between the connection part 32 and the opening / closing member 20 may be blocked by elastic members provided on both the connection part 32 and the opening / closing member 20. [Explanation of symbols]

[0114] 2 Building openings 3 Sash 10 screens 20 Opening and closing member 30 Switching mechanism D1 Prospective direction

Claims

1. A screen installed on one side of the sash that opens and closes the building opening, An opening and closing member made of a permeable and rigid material; a switching mechanism that switches between a closed state in which the opening / closing member closes the building opening and an open state in which the opening / closing member opens the building opening by moving the opening / closing member; Equipped with screen.

2. The opening and closing member is A plurality of such antennas are provided in the prospective direction. The screen of claim 1.

3. a first communication portion that communicates an internal space formed between the plurality of opening and closing members in the closed state with a space on one side of the internal space in the projection direction; A second communication portion that communicates the internal space and a space on the other side of the internal space in the projection direction; Further comprising:

3. The screen of claim 2.

4. The first communication portion and the second communication portion are are formed at different positions from each other when viewed from the projection direction, 4. The screen of claim 3.

5. The switching mechanism is a guide portion that guides the plurality of opening and closing members in the up and down direction; a connection portion that connects the plurality of opening and closing members to each other; Equipped with 5. A screen according to claim 3 or claim 4.

6. a suppression section that suppresses air leakage from a portion of the internal space other than the first communication section and the second communication section, 6. The screen of claim 5.

7. The plurality of opening and closing members are It is composed of multiple components arranged vertically, The switching mechanism is The plurality of members are moved relative to each other to switch from the closed state to the open state, The suppression unit is a first closing portion that closes spaces between the plurality of members in the closed state; 7. The screen of claim 6.

8. The guide portion has: In the closed state, an opposing surface is formed that faces the plurality of opening and closing members, The suppression unit is a second closing portion that closes a gap between the plurality of opening / closing members and the opposing surface in the closed state; 7. The screen of claim 6.

9. The suppression unit is The device further includes a pressing portion that presses the plurality of opening / closing members against the second closing portion in the closed state.

9. The screen of claim 8.

10. The suppression unit is a third closing portion that closes a gap between the plurality of opening / closing members and the connection portion in the closed state; 7. The screen of claim 6.

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