Fireproof window

Abstract

To provide a fireproof window excellent in aesthetic property.SOLUTION: A fireproof window 1 includes a first window portion 20, a second window portion 40 arranged side by side with the first window portion 20 in the left-right direction, and a coupling portion 60 that couples the window portions 20, 40 and has a fire-resistant member 63. The coupling portion 60 includes an attachment steel member 61 that is disposed on the indoor side of each of inner vertical frames 22A, 42A of each of the window portions 20, 49 and to which the fire-resistant member 63 is attached, and a coupling member 66 that couples each of the vertical frames 22A, 42A and the attachment steel member 61. Each of the inner vertical frames 22A, 42A has a vertical frame main body portion 24A, 44A and extending in the vertical direction, and the coupling member 66 is disposed entirely on the indoor side with respect to each of the vertical frame main body portions 24A, 44A.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a fire window. [Background technology]

[0002] Conventionally, there exists a continuous window having a connecting part (such as a mullion) arranged between two adjacent window parts. Among continuous windows, there exists a continuous window as a fireproof window, in which the flame-blocking performance is enhanced by a fireproof board or the like (for example, Patent Document 1).

[0003] In the continuous window (fire window) of Patent Document 1, vertical members to which fireproof boards are attached are arranged on the indoor side of the vertical frames of each window section at the connecting parts. Each vertical frame and the vertical members are connected by a connecting member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2021-101085 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned continuous window, a part of the connecting member is interposed between each vertical frame. This causes the vertical frames to spread apart in the front direction, which ruins the aesthetic appearance of the continuous window. Furthermore, a sealant is placed in the gap between the vertical frames. Since the dimension of the sealant in the front direction is relatively large, the sealant stands out and also ruins the aesthetic appearance of the continuous window.

[0006] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a fire window that is aesthetically pleasing. [Means for solving the problem]

[0007] The present disclosure relates to a fire window provided in an opening of a building, comprising a first window section, a second window section provided alongside the first window section in the left-right direction, and a connecting section connecting the first window section and the second window section and having a fire-resistant member, wherein the first window section and the second window section each have a vertical frame, and the connecting section has a mounting member arranged on the indoor side of the vertical frame to which the fire-resistant member is attached, and a connecting member connecting the vertical frame and the mounting member, the vertical frame having a vertical frame main body extending in the up-down direction, and the connecting member is arranged entirely on the indoor side of the vertical frame main body. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a front view of a fire window according to a first embodiment, seen from the indoor side. [Diagram 2] FIG. 1 is a cross-sectional view of a fire window according to a first embodiment. [Diagram 3] FIG. 11 is a front view of a fire window according to a second embodiment, as seen from the indoor side. [Figure 4] FIG. 6 is a cross-sectional view of a fire window according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] (First embodiment) A first embodiment of the present disclosure will be described below with reference to Figures 1 and 2. A building 2 of this embodiment includes a room 3. A fire window 1 is a continuous window in which a first window section 20 and a second window section 40 are connected by a connecting section 60, and is provided in an opening 4 formed in an outer wall of the room 3.

[0010] In this specification, "up-down direction" refers to the top-bottom direction. "Left-right direction" refers to the left-right direction when looking at the fire window 1 from the indoor side X2. "Prospect direction" refers to the indoor-outdoor direction of the fire window 1. "Prospect direction" refers to the surface direction of the surface (e.g., glass 31 and glass 51) that is visible when looking at the fire window 1 from the front. The prospect direction is also the depth direction of the fire window 1. The prospect direction is also the up-down, left-right, and right-left directions. "Prospect surface" refers to a surface that extends perpendicular to the indoor-outdoor direction and is arranged to face the indoor side and the outdoor side, respectively. "Prospect surface" refers to a surface that extends along the indoor-outdoor direction.

[0011] As shown in Fig. 1, the fire window 1 comprises a frame 10, a first window section 20 and a second window section 40 arranged side by side in the left-right direction, and a connecting section 60 provided between the first window section 20 and the second window section 40. The first window section 20 is disposed to the left of the second window section 40. The first window section 20 and the second window section 40 are sometimes collectively referred to as "the window sections 20, 40."

[0012] The frame 10 is a rectangular frame body. The frame 10 is disposed along the edge of the opening 4. The frame 10 is disposed on the indoor side X2 of each of the window portions 20, 40.

[0013] The first window portion 20 is a fixed window. The first window portion 20 has a frame body 21 and a glass 31.

[0014] The frame body 21 is a rectangular frame body and includes a pair of left and right vertical frames 22. Of each vertical frame 22, the one on the connecting portion 60 side may be referred to as the "inner vertical frame 22A."

[0015] As shown in FIG. 2, the inner vertical frame 22A has a vertical frame main body portion 24A, a glass mounting portion 25A, a first extension piece 27A, and a second extension piece 28A.

[0016] The vertical frame body 24A is a hollow rectangular prism extending in the vertical direction. The indoor side wall 24Aa, which is the wall on the indoor side of the vertical frame body 24A, is along the front direction. The glass mounting portion 25A extends from the vertical frame body 24A to the outdoor direction. The glass mounting portion 25A has a groove portion 26A that opens in the front direction. The first extension piece 27A is a rectangular plate. The first extension piece 27A extends from the indoor side wall 24Aa to the second window portion 40 side with its plate surface oriented along the front direction. The second extension piece 28A is a rectangular plate. The second extension piece 28A extends from the vertical frame body 24A to the indoor side with its plate surface oriented along the front direction.

[0017] The glass 31 is disposed inside the frame 21. The glass 31 is inserted into the groove 26A together with an airtight material (not shown). The number of glass sheets 31 is not particularly limited. For convenience, the glass sheets 31 are not shown in FIG. 2.

[0018] The second window portion 40 is a fixed window. The second window portion 40 has a frame body 41 and a glass 51.

[0019] The frame body 41 is a rectangular frame body and includes a pair of left and right vertical frames 42. Of each vertical frame 42, the one on the connecting portion 60 side may be referred to as the "inner vertical frame 42A." Moreover, the inner vertical frame 22A and the inner vertical frame 42A may be collectively referred to as the "inner vertical frames 22A, 42A."

[0020] The inner vertical frame 42A has a vertical frame main body portion 44A, a glass mounting portion 45A, a first extension piece 47A, and a second extension piece 48A.

[0021] The vertical frame body 44A is a hollow rectangular column extending in the vertical direction. The indoor side wall 44Aa, which is the outdoor side wall of the vertical frame body 44A, has its indoor side surface along the front direction. The glass mounting portion 25A extends from the vertical frame body 44A in the outdoor direction. The glass mounting portion 45A has a groove portion 46A that opens in the front direction. The first extension piece 47A is a rectangular plate. The first extension piece 47A extends from the indoor side wall 44Aa to the first window portion 20 side with its plate surface oriented along the front direction. The second extension piece 48A is a rectangular plate. The second extension piece 48A extends from the vertical frame body 44A to the indoor side with its plate surface oriented along the front direction.

[0022] The first extension piece 27A and the first extension piece 47A may be collectively referred to as "first extension pieces 27A, 47A." The second extension piece 28A and the second extension piece 48A may be collectively referred to as "second extension pieces 28A, 48A." Additionally, each of the second extension pieces 28A, 48A corresponds to the "extension piece" in the claims.

[0023] In addition, the first extension pieces 27A, 47A are located close to each other, which makes it possible to prevent flames from entering between the inner vertical frames 22A, 42A.

[0024] Also, the glass mounting portion 25A and the glass mounting portion 45A are slightly spaced apart. Between the glass mounting portion 25A and the glass mounting portion 45A, a sealant 32 and a backup material 33 provided on the exterior side of the sealant 32 are arranged. This can further improve the flame blocking performance of the fire window 1. Both the sealant 32 and the backup material 33 have relatively small dimensions in the left-right direction. This can prevent the aesthetic appearance of the fire window 1 from being marred by the sealant or the like.

[0025] The glass 31 is disposed inside the frame 21. The glass 31 is inserted into the groove 26A together with an airtight material (not shown). The number of the glass 31 is not particularly limited. For convenience, the glass 31 is not shown in FIG. 2.

[0026] The connecting portion 60 has a mounting steel material 61 , a first connecting member 62 , a fire-resistant member 63 , a cover member 65 , a connecting member 66 , and a second connecting member 71 .

[0027] The mounting steel material 61 is made of steel and is disposed on the indoor side of each of the inner vertical frames 22A, 42A. The mounting steel material 61 has a hollow rectangular column shape extending in the vertical direction.

[0028] The first connection member 62 has a rectangular plate shape extending in the up-down direction. The first connection member 62 is disposed on the indoor side of the mounting steel material 61 with its plate surface abutting against the mounting steel material 61. The first connection member 62 is made of, for example, aluminum or steel. The first connection member 62 has a larger left-right dimension than the mounting steel material 61.

[0029] The fireproof member 63 is a so-called fireproof coating. The fireproof member 63 is, for example, configured by bonding together a plurality of calcium silicate plates, and has a rectangular prism shape extending in the vertical direction. The fireproof member 63 is disposed on the indoor side of the first connecting member 62. The fireproof member 63 is attached to the indoor side surface of the mounting steel material 61 via the first connecting member 62. The fireproof member 63 is screwed to the mounting steel material 61 by a screw S1 that penetrates the fireproof member 63 and the first connecting member 62 from the indoor side. The mounting steel material 61 corresponds to a mounting member.

[0030] The cover member 65 extends in the vertical direction, and its cross-sectional shape along the horizontal direction is U-shaped and opens to the outside of the room. The cover member 65 is made of a metal material such as aluminum. The cover member 65 covers the mounting steel material 61 and the fireproof member 63 from the inside of the room.

[0031] The connecting member 66 extends in the up-down direction and has a horizontal cross section that is U-shaped. The connecting member 66 has a middle wall portion 67 and a pair of left and right side wall portions 68.

[0032] The intermediate wall portion 67 is in the form of a rectangular plate, and is disposed so that its plate surface is aligned along the front direction. The front surface of the intermediate wall portion 67 facing the interior of the room is referred to as a "front surface 66a."

[0033] Each side wall portion 68 is formed in a rectangular plate shape, and is arranged so that the plate surface is along the projection direction. Each side wall portion 68 extends from the intermediate wall portion 67 toward the inside of the room. Each side wall portion 68 extends along each of the left and right sides of the intermediate wall portion 67. The cross-sectional shape of the connecting member 66 along the horizontal direction is U-shaped and opens toward the inside of the room. The projection surface of each side wall portion 68 is referred to as the "projection surface 66b."

[0034] The connecting member 66 is disposed on the indoor side of each of the inner vertical frames 22A, 42A. The facing surface 66a abuts against each of the vertical frame main body portions 24A, 44A and each of the first extending pieces 27A, 47A. The intermediate wall portion 67 is disposed between each of the second extending pieces 28A, 48A. The intermediate wall portion 67 is screwed to each of the first extending pieces 27A, 47A by a screw S2 that penetrates the intermediate wall portion 67 and each of the first extending pieces 27A, 47A from the indoor side. As a result, each of the inner vertical frames 22A, 42A is connected to the facing surface 66a of the connecting member 66.

[0035] The connecting member 66 is disposed on the exterior side of the mounting steel material 61. The projected surface 66b and the mounting steel material 61 face each other. Each side wall portion 68 is screwed to the mounting steel material 61 by a screw S3 that penetrates from each side wall portion 68 side toward the mounting steel material 61 side. In this way, the mounting steel material 61 is connected to the projected surface 66b of the connecting member 66.

[0036] The entire connecting member 66 is disposed inside the room relative to the vertical frame main bodies 24A, 44A. Therefore, the connecting member 66 is not interposed between the vertical frame main bodies 24A, 44A. This makes it possible to prevent the vertical frame main bodies 24A, 44A from moving apart due to the connecting member 66. This makes it possible to prevent the inner vertical frames 22A, 42A from moving apart.

[0037] The outer surface of the cover member 65 in the left-right direction is flush with the outer surface of the vertical frame main body 24A in the left-right direction, thereby making the connecting portion 60 aesthetically pleasing.

[0038] The second connection members 71 are provided as a pair on the left and right sides sandwiching the mounting steel material 61. Each second connection member 71 is covered by a cover member 65 from the indoor side.

[0039] Each second connecting member 71 has a first portion 72 extending in the projection direction, a second portion 73 extending from an outside end of the first portion 72, and a third portion 74 extending from an inside end of the first portion 72. Each second portion 73 extends from the first portion 72 in a direction away from the mounting steel material 61 and is further bent toward the inside of the room. Each third portion 74 extends from the first portion 72 in a direction away from the mounting steel material 61 and is further bent toward the inside of the room.

[0040] In one second connection member 71, the first portion 72 has an end portion on the exterior side thereof abutting against the second extending piece 28A. The second extending piece 28A also abuts against the projected surface 66b of the connecting member 66. The first portion 72, the second extending piece 28A, and the connecting member 66 (side wall portion 68) are fixed together with a screw S4. In the other second connection member 71, the first portion 72 has an end portion on the exterior side thereof abutting against the second extending piece 48A. The second extending piece 48A also abuts against the projected surface 66b of the connecting member 66. The first portion 72, the second extending piece 48A, and the connecting member 66 (side wall portion 68) are fixed together with a screw S4. This connects the coupling member 66 to each of the inner vertical frames 22A, 42A, and connects each of the second connection members 71 to the coupling member 66 and each of the inner vertical frames 22A, 42A.

[0041] A portion of each second portion 73 extending in the forward direction abuts against the cover member 65. Each second portion 73 and the cover member 65 are fixed by a screw S5. A portion of each third portion 74 extending in the forward direction abuts against the first connecting member 62. Each first connecting member 62 and each third portion 74 are fixed by a screw S6. This fixes the cover member 65 at a predetermined position.

[0042] Next, a description will be given of a procedure for constructing the connecting portion 60. Note that the window portions 20, 40 are arranged in the fire window 1 prior to the construction of the connecting portion 60.

[0043] First, the connecting member 66 is placed on the room side of each of the inner vertical frames 22A, 42A. The connecting member 66 is placed between each of the second extension pieces 28A, 48A. At this time, the visible surface 66a of the intermediate wall portion 67 is abutted against each of the vertical frame main body portions 24A, 44A and each of the first extension pieces 27A, 47A of each of the inner vertical frames 22A, 42A, and the visible surface 66b of each of the side wall portions 68 is abutted against each of the second extension pieces 28A, 48A. Then, the intermediate wall portion 67 and each of the first extension pieces 27A, 47A are fixed by passing the screws S2 through them from the room side.

[0044] Next, the mounting steel material 61 is placed on the indoor side of the connecting member 66. The mounting steel material 61 is placed between each side wall portion 68, and the projecting surface 66b of each side wall portion 68 is brought into contact with the outer surface in the left-right direction of the mounting steel material 61. Then, each side wall portion 68 and the mounting steel material 61 are fixed by passing a screw S3 through from each side wall portion 68 side toward the mounting steel material 61 side.

[0045] Next, each second connection member 71 is placed on the room side of each vertical frame body portion 24A, 44A. Each first portion 72 is abutted against each second extension piece 28A, 48A, and each second portion 73 is abutted against each vertical frame body portion 24A, 44A. Then, each first portion 72, each second extension piece 28A, 48A, and each side wall portion 68 are fixed by passing a screw S4 through from the first portion 72 side toward the side wall portion 68 side.

[0046] Next, the first connecting member 62 is placed on the indoor side of the mounting steel material 61. The outdoor side surface of the first connecting member 62 is brought into contact with the indoor side surface of the mounting steel material 61 and the indoor side surfaces of the third portions 74 of each second connecting member 71. Then, the first connecting member 62 and each third portion 74 are fixed together by passing screws S6 through them from the indoor side.

[0047] Next, the fireproof member 63 is placed on the indoor side of the first connecting member 62. The outdoor side surface of the fireproof member 63 is abutted against the indoor side of the first connecting member 62. Then, the fireproof member 63 and the first connecting member 62 are fixed together by passing the screw S1 through from the indoor side.

[0048] Next, the cover member 65 is placed on the indoor side of the mounting steel material 61. The fireproof member 63, the first connection member 62, the second connection member 71, and the mounting steel material 61 are covered from the indoor side by the cover member 65. The surface of the second part 73 of each second connection member 71 away from the mounting steel material 61 and the surface of the cover member 65 facing the mounting steel material 61 are brought into contact with each other. Then, the cover member 65 and each second part 73 are fixed by passing the screw S5 from the cover member 65 side toward the second part 73 side. This completes the construction of the connecting part 60.

[0049] According to this embodiment, the following effects are achieved.

[0050] The entire connecting member 66 is disposed inside the room relative to the vertical frame main bodies 24A, 44A. In this case, the connecting member 66 is not interposed between the vertical frame main bodies 24A, 44A. This makes it possible to prevent the gap between the inner vertical frames 22A, 42A from widening and the connecting portions of the window sections 20, 40 from widening in the left-right direction due to the connecting member 66. This makes it possible to provide a fire window 1 with excellent aesthetics.

[0051] In addition, by suppressing the expansion of the gap between the inner vertical frames 22A, 42A, the sealant 32 and the backup material 33 arranged in the gap can be made smaller in the left-right direction. This prevents the aesthetic appearance of the fire window 1 from being marred by the sealant or the like.

[0052] Each of the inner vertical frames 22A, 42A is connected to the projected surface of the connecting member 66. In this case, the connecting member 66 can be connected to each of the inner vertical frames 22A, 42A without being interposed between each of the vertical frame main bodies 24A, 44A. This makes it possible to prevent the gap between each of the inner vertical frames 22A, 42A from widening and the connecting portions of each of the window sections 20, 40 from widening in the left-right direction due to the connecting member 66.

[0053] The mounting steel material 61 is connected to the projecting surface 66b of the connecting member 66. This allows the inner vertical frames 22A, 42A to be suitably connected to the mounting steel material 61 arranged on the indoor side thereof.

[0054] Each of the inner vertical frames 22A, 42A has a second extension piece 28A, 48A that extends from each of the vertical frame main bodies 24A, 44A toward the room side, and the second extension piece 28A, 48A is connected to the projecting surface 66b of the connecting member 66. This makes it possible to more appropriately connect each of the inner vertical frames 22A, 42A and the connecting member 66.

[0055] The inner vertical frames 22A, 42A are connected to each other by a single connecting member 66. This allows the structure of the fire window 1 to be simplified.

[0056] Further, the gap between each of the inner vertical frames 22A, 42A is covered from the inside of the room by the connecting member 66. This makes it possible to suppress the intrusion of flames into the inside of the room.

[0057] The cross section of the connecting member 66 taken along the horizontal direction is U-shaped, making it possible to obtain the desired effect with a simple structure.

[0058] The left-right outer surface of the cover member 65 and the left-right outer surface of the vertical frame main body 24A are flush with each other. This improves the aesthetic appearance of the fire window 1.

[0059] Second embodiment Hereinafter, a second embodiment of the present disclosure will be described with reference to Fig. 3 and Fig. 4. The differences from the first embodiment will be mainly described. The same components as those in the first embodiment will be denoted by the same reference numerals, and the description thereof will be omitted.

[0060] The first window portion 120 and the second window portion 140 according to the second embodiment are both openable / closable windows, and more specifically, are vertical sliding windows.

[0061] As shown in Fig. 3 and Fig. 4, the first window section 120 has a vertical sliding door 131. The vertical sliding door 131 has a rectangular frame-shaped door frame 132, a door handle 133, and glass 134 provided inside the door frame 132. The vertical sliding door 151 can be opened by pulling the door tip into the room. For convenience, the glass 134 is not shown in Fig. 4.

[0062] The inner vertical frame 122A of the first window portion 120 has a vertical frame main body portion 123A extending in the up-down direction, a first extension piece 27A, and a second extension piece 28A. The vertical frame main body portion 123A has a first wall portion 124A, a second wall portion 125A, and a third wall portion 126A.

[0063] The first wall 124A is a rectangular plate, and its plate surface is along the projection direction. The second wall 125A extends from the end of the first wall 124A on the indoor side in a direction away from the second window 140. The second wall 125A is a rectangular plate, and its plate surface is along the projection direction. The third wall 126A extends from the end of the second wall 125A on the side away from the second window 140 to the outdoor side. The third wall 126A is a rectangular plate, and its plate surface is along the projection direction. The projection dimension of the third wall 126A is smaller than the projection dimension of the first wall 124A.

[0064] The first extension piece 27A extends from the end of the second wall portion 125A on the second window portion 140 side toward the second window portion 140. The second extension piece 128A extends from the second wall portion 125A toward the indoor side.

[0065] An airtight material 129A is provided on the outside end of the third wall portion 126A. When the vertical sliding screen 131 is closed, the indoor end of the hanging point of the vertical sliding screen 131 abuts against the airtight material 129A. This can increase airtightness between the vertical sliding screen 131 and the inner vertical frame 122A.

[0066] The second window section 140 has a vertical sliding door 151. The vertical sliding door 151 has a rectangular frame-shaped door frame 152, a door handle 153, and glass 154 provided inside the door frame 152. The vertical sliding door 151 is opened by pulling the door end into the room and rotating it around a rotation axis provided at the hanging point. For convenience, the glass 154 is omitted from FIG. 4. The vertical sliding door 131 and the vertical sliding door 151 are sometimes collectively referred to as "vertical sliding door 131, 151". Each of the vertical sliding door 131, 151 corresponds to a door.

[0067] The inner vertical frame 122A of the second window portion 140 has a vertical frame main body 143A, a first extension piece 47A, and a second extension piece 48A, similar to the inner vertical frame 122A of the first window portion 120. The shape of the inner vertical frame 142A is generally the same as the shape of the inner vertical frame 122A when it is inverted from left to right. The vertical frame main body 143A has a first wall portion 144A, a second wall portion 145A, and a third wall portion 146A.

[0068] An airtight material 149A is provided on the outside end of the third wall portion 146A. When the vertical sliding screen 151 is closed, the surface of the door tip of the vertical sliding screen 151 facing the inside of the room abuts against the airtight material 149A. This can improve airtightness between the vertical sliding screen 151 and the inner vertical frame 122A.

[0069] Also, the first wall portion 124A and the first wall portion 144A are slightly spaced apart. A sealant 155 and a backup material 156 provided on the indoor side of the sealant 155 are disposed in the gap between the first wall portion 124A and the first wall portion 144A. This can further improve the flame blocking performance of the fire window 100.

[0070] When the vertical sliding screen 131 and the vertical sliding screen 151 are in a closed state, the end of the vertical sliding screen 131 on the second window section 140 side and the end of the vertical sliding screen 151 on the first window section 120 side face each other. Only a part of the end of the vertical sliding screen 131 on the second window section 140 side on the room side is covered from the second window section 140 side by the first wall section 124A, and only a part of the end of the vertical sliding screen 151 on the first window section 120 side on the room side is covered from the first window section 20 side by the first wall section 144A. Therefore, the vertical sliding screen 131 and the vertical sliding screen 151 face each other without the respective inner vertical frames 122A, 142A being interposed therebetween, and more specifically, the vertical sliding screen 131 and the vertical sliding screen 151 face each other at a part of their exterior sides without the respective inner vertical frames 122A, 142A being interposed therebetween. An airtight material 135 is provided in the area near the exterior side of the end of the vertical sliding screen 131 on the first window section 120 side. When the vertical sliding screen 131 and the vertical sliding screen 151 are in the closed state, the end of the vertical sliding screen 151 on the first window section 120 side abuts against the airtight material 135. This can increase the airtightness between the vertical sliding screens 131, 151.

[0071] According to this embodiment, the following effects are achieved.

[0072] The vertical sliding screens 131, 151 face each other without the inner vertical frames 122A, 142A in between. In this case, the vertical sliding screens 131, 151 can be easily brought close to each other, which prevents the gaps between the vertical sliding screens 131, 151 from spoiling the aesthetic appearance of the fire window 100. In addition, it is easy to increase the airtightness between the vertical sliding screens 131, 151.

[0073] Although the preferred embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be modified as appropriate.

[0074] In the above embodiments, the window portion is a fixed window or a vertical sliding window, but the type of window is not particularly limited. For example, it may be an outward-tilting window.

[0075] In each of the above embodiments, the connecting member 66 has a U-shaped cross section along the horizontal direction, but the shape of the connecting member is not limited to this. Also, each of the inner vertical frames 22A, 42A does not have to be connected to the mounting steel material 61 by a single connecting member. For example, the connecting member may have an L-shaped cross section along the horizontal direction. In that case, each of the inner vertical frames 22A, 42A is connected to the mounting steel material 61 by a separate connecting member. However, it is preferable that the connecting member has the configuration of each of the above embodiments, since this simplifies the configuration and improves airtightness and heat insulation.

[0076] [Aspect 1] A fire window installed in an opening of a building, comprising: a first window section; a second window section installed alongside the first window section in the left-right direction; and a connecting section that connects the first window section and the second window section and has a fire-resistant member, wherein the first window section and the second window section each have a vertical frame, and the connecting section has a mounting member that is arranged on the indoor side of the vertical frame and to which the fire-resistant member is attached, and a connecting member that connects the vertical frame and the mounting member, the vertical frame has a vertical frame main body portion extending in the up-down direction, and the connecting member is arranged entirely on the indoor side of the vertical frame main body portion. [Aspect 2] The fire window of claim 1, wherein the vertical frame is connected to a visible surface of the connecting member. [Aspect 3] The fire window according to claim 1 or 2, wherein the mounting member is connected to a prospective surface of the connecting member. [Aspect 4] A fire window as described in aspect 3, wherein the vertical frame has an extension piece extending from the vertical frame main body portion toward the inside of the room, and the extension piece is connected to the connecting member. [Aspect 5] The fire window according to any one of aspects 1 to 4, wherein the vertical frames are connected to each other by one of the connecting members. [Aspect 6] A fire window as described in aspect 5, wherein the cross-sectional shape of the connecting member along the horizontal direction is U-shaped. [Aspect 7] A fire window as described in any of aspects 1 to 6, wherein the connecting portion has a cover member that covers the fire-resistant member from the indoor side, and the projected surface of the cover member and the projected surface of the vertical frame main body portion are flush with each other. [Aspect 8] The first window portion and the second window portion each have a shoji screen, A fire window according to any one of aspects 1 to 7, wherein the shoji screens face each other without the vertical frame therebetween. [Explanation of symbols]

[0077] 1,100: fire window, 2: building, 4: opening, 20,120: first window section, 22,42: vertical frame, 24A,44A: vertical frame main body, 28A,48A: second extension piece (extension piece), 40,140: second window section, 60: connecting section, 61: mounting steel material (mounting member), 63: fire-resistant member, 65: cover member, 66: connecting member, 66a: visible surface of connecting member, 66b: visible surface of connecting member, 131,151: vertical sliding screen (screen).

Claims

1. A fire window installed in an opening of a building, A first window portion; A second window portion provided next to the first window portion in the left-right direction; a connecting portion that connects the first window portion and the second window portion and has a fire-resistant member; Equipped with The first window portion and the second window portion each have a vertical frame, The connecting portion includes a mounting member disposed on the indoor side of the vertical frame to which the fireproof member is attached, and a connecting member connecting the vertical frame and the mounting member, The vertical frame has a vertical frame main body portion extending in the up-down direction, A fire window in which the entire connecting member is positioned inside the room relative to the vertical frame main body portion.

2. The fire window according to claim 1 , wherein the frame is connected to a front surface of the connecting member.

3. The fire window according to claim 1 or 2, wherein the mounting member is connected to a visible surface of the connecting member.

4. The vertical frame has an extension piece extending from the vertical frame main body portion to the indoor side, The fire window according to claim 3 , wherein the extension piece is connected to the connecting member.

5. The fire window according to claim 1 or 2, wherein the vertical frames are connected to each other by one of the connecting members.

6. The fire window according to claim 5 , wherein the cross-sectional shape of the connecting member taken along the horizontal direction is U-shaped.

7. The connecting portion has a cover member that covers the fireproof member from the indoor side, The fire window according to claim 1 or 2, wherein a projected surface of the cover member and a projected surface of the vertical frame main body portion are flush with each other.

8. The first window portion and the second window portion each have a shoji screen, The fire window according to claim 1 or 2, wherein the shoji screens face each other without the vertical frame therebetween.

Images