Curtain wall

Abstract

To provide a curtain wall capable of improving adiabaticity in a simple structure.SOLUTION: A curtain wall is provided with: a frame member 15 having a frame side engagement part 157; a batten 41 having a batten side engagement part 414 engaged on the frame side engagement part 157; a panel groove 18 formed using the frame member 15 and the batten 41; a panel 36 of which an end is placed in the panel groove 18; and adiabatic material 51 placed between the frame side engagement part 157 and the batten side engagement part 414.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to curtain walls. [Background technology]

[0002] Curtain walls installed at openings in buildings have been known for some time. In the curtain wall disclosed in Patent Document 1, a heat insulating material is fitted between a metal indoor member and a metal outdoor member of a frame material such as a mullion or a mullion that supports an exterior wall panel such as glass, in order to improve heat insulation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-353390 Summary of the Invention [Problem to be solved by the invention]

[0004] Manufacturing a frame material in which a heat insulating material is fitted between an indoor-side member and an outdoor-side member has the problem that the processing of the indoor-side member and the outdoor-side member becomes complicated.

[0005] The present disclosure has been made in consideration of the above circumstances, and provides a curtain wall that can improve thermal insulation with a simple configuration. [Means for solving the problem]

[0006] A curtain wall according to one aspect of the present disclosure comprises a frame material having a frame-side retaining portion, a ledge having a ledge-side retaining portion that retains with the frame-side retaining portion, a panel groove formed by the frame material and the ledge, a panel having an end portion disposed in the panel groove, and an insulating material disposed between the frame-side retaining portion and the ledge-side retaining portion. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a front view of a curtain wall according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 3 is an enlarged view of part IV in FIG. 2. [Figure 5] FIG. 3 is an enlarged view of part V in FIG. 2. [Figure 6] FIG. 4 is an enlarged view of a portion VI in FIG. 3. [Figure 7] FIG. 7 is an enlarged view of part VII in FIG. [Figure 8] FIG. 8 is an enlarged view of part VIII in FIG. 5. [Figure 9] FIG. 7 is an enlarged view of part IX in FIG. 6. [Figure 10] FIG. 7 is an enlarged view of a portion VII of FIG. 4 of the curtain wall according to the second embodiment. [Figure 11] FIG. 8 is an enlarged view of a portion VIII of FIG. 5 of the curtain wall according to the second embodiment. [Figure 12] FIG. 7 is an enlarged view of a portion IX of FIG. 6 of the curtain wall according to the second embodiment. [Figure 13] FIG. 10 is a diagram showing the batten of the curtain wall according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] (First embodiment) The curtain wall according to the first embodiment will be described below with reference to the drawings. The following embodiment shows one aspect of the present disclosure, does not limit the present disclosure, and can be modified as desired within the scope of the technical concept of the present disclosure. In the following drawings, the scale of each structure is different from the actual structure to make each configuration easier to understand.

[0009] In the following explanation, the direction connecting the outdoor side and the indoor side and running horizontally will be referred to as the indoor-outdoor direction Y. The direction perpendicular to the indoor-outdoor direction Y and running horizontally will be referred to as the left-right direction X. The direction perpendicular to the indoor-outdoor direction Y and the left-right direction X will be referred to as the up-down direction Z. Within the indoor-outdoor direction Y, the side facing the living room will be referred to as the indoor side Y2, and the side opposite the living room will be referred to as the outdoor side Y1.

[0010] As shown in FIG. 1, a structure 9 such as a building includes a structural body 90 and a curtain wall 100 shown in FIG.

[0011] As shown in FIG. 2, the structural body 90 has columns and beams 91 (not shown). Each floor of the building 9 has a floor 92. Inside the building 9, the space above the floor 92 is a living room 93. An attic space 9S is formed between a ceiling 94 of the living room 93 and the floor 92 of the upper floor. The curtain wall 100 is connected to the structural body 90 via fasteners 95 (shown in FIG. 6) to form the exterior wall of the building 9.

[0012] As shown in FIG. 1, the curtain wall 100 includes a frame body 1, panel bodies 3A, 3B, and 3C, battens 41, 42, 43, and 44 shown in FIGS.

[0013] As shown in Figure 1, the frame 1 comprises a rafter 10 and a mullion 20. The rafter 10 has an upper rafter 11, a middle rafter 13, and a lower rafter 15. The upper rafter 11, the middle rafter 13, the lower rafter 15, and the mullion 20 are made of a metal material such as an aluminum alloy. The upper rafter 11, the middle rafter 13, the lower rafter 15, and the mullion 20 correspond to the frame material in the claims.

[0014] The upper crosspieces 11, the middle crosspieces 13, and the lower crosspieces 15 are repeatedly arranged in a vertical direction. The upper crosspieces 11, the middle crosspieces 13, and the lower crosspieces 15 extend in the left-right direction X. The mullion 20 extends in the up-down direction Z. The mullion 20 connects the ends of the upper crosspieces 11, the middle crosspieces 13, and the lower crosspieces 15 in the left-right direction X.

[0015] The area between the upper loop 11 and the middle loop 13 corresponds to a so-called spandle portion A1. The area between the middle loop 13 and the lower loop 15 corresponds to a non-spanddle portion A2.

[0016] As shown in Figure 2, panel bodies 3A and 3B are arranged in spandrel section A1. Panel body 3C is arranged in non-spandrel section A2. Panel bodies 3A and 3B are arranged inside a frame formed by upper interlining 11, middle interlining 13, and a pair of left and right mullions 20, 20. Panel body 3C is arranged inside a frame formed by middle interlining 13, lower interlining 15, and a pair of left and right mullions 20, 20.

[0017] In the spandle portion A1, the panel body 3B is arranged on the indoor side Y2 of the panel body 3A at a distance from the panel body 3A. The panel bodies 3C are arranged directly above and directly below the panel body 3A.

[0018] The panel body 3A has a glass panel 31. The upper end of the glass panel 31 is supported by the upper transom 11. As shown in FIG. 5, the lower end of the glass panel 31 is supported by the middle transom 13. As shown in FIG. 6, both left and right ends of the glass panel 31 are supported by the mullions 20. In the illustrated example, the glass panel 31 is single-glazed. The glass panel 31 is not limited to single-glazed glass, and may be double-glazed or triple-glazed. The panel body 3A may have a panel made of a material other than glass. The glass panel 31 corresponds to the panel in the claims.

[0019] As shown in FIG. 4, the panel body 3B includes a fire-resistant board 32, a vacuum insulation board 33, and a decorative panel 34. The fire-resistant board 32, the vacuum insulation board 33, and the decorative panel 34 are arranged in this order from the indoor side Y2 to the outdoor side Y1. The upper ends of the fire-resistant board 32, the vacuum insulation board 33, and the decorative panel 34 are supported by an upper interlining 11. As shown in FIG. 5, the lower ends of the fire-resistant board 32, the vacuum insulation board 33, and the decorative panel 34 are supported by an intermediate interlining 13. As shown in FIG. 6, the left and right ends of the fire-resistant board 32, the vacuum insulation board 33, and the decorative panel 34 are supported by mullions 20.

[0020] The vacuum insulation board 33 has a core material 33a and a bag body 33b. The core material 33a contains at least one of amorphous silica and glass fiber. For example, the core material 33a is a microporous insulating material made of an infrared-transmitting material mixed with filaments as a reinforcing material. The bag body 33b is made of a metal material and has a bag shape. For example, the bag body 33b is made of an impermeable metal welding film. The bag body 33b seals the core material 33a in a vacuum state. The thermal conductivity of the vacuum insulation board 33 is preferably about 0.0042 W / m·K. The thickness of the vacuum insulation board 33 is preferably about 5 mm to 50 mm.

[0021] As shown in FIG. 4, the panel body 3C has a glass panel 36. The lower end of the glass panel 36 is supported by the middle transom 13. As shown in FIG. 5, the upper end of the glass panel 36 is supported by the upper transom 11. Both left and right ends of the glass panel 36 are supported by the mullions 20. In the illustrated example, the glass panel 36 is double-glazed. The glass panel 36 is not limited to double-glazed glass, and may be single-glazed or triple-glazed. The panel body 3C may have a panel made of a material other than glass. The glass panel 36 corresponds to the panel in the claims.

[0022] As shown in FIG. 4, the lower interlocking member 15 has an upper plate portion 151 , a lower plate portion 152 , an outdoor plate portion 154 , and an indoor plate portion 155 .

[0023] The upper plate portion 151 is formed in a plate shape. The plate surface of the upper plate portion 151 faces the vertical direction Z. The upper plate portion 151 is located above the lower interlocking member 15.

[0024] The lower plate portion 152 is formed in a plate shape. The plate surface of the lower plate portion 152 faces the vertical direction Z. The lower plate portion 152 is disposed below the upper plate portion 151. The lower plate portion 152 is located below the lower transom 15. An upwardly recessed recess 153 is formed in the middle of the lower plate portion 152 in the indoor-outdoor direction Y. The upper portion of the recess 153 abuts the upper plate portion 151.

[0025] The outdoor side plate 154 connects an end portion of the upper side plate 151 on the outdoor side Y1 to an end portion of the lower side plate 152 on the outdoor side Y1. The outdoor side plate 154 is formed in a plate shape. The plate surface of the outdoor side plate 154 faces the indoor-outdoor direction Y.

[0026] The indoor side plate portion 155 connects the middle of the upper plate portion 151 in the indoor-outdoor direction Y and the end portion of the lower plate portion 152 on the indoor side Y2. The indoor side plate portion 155 is formed in a plate shape. The plate surface of the indoor side plate portion 155 faces the indoor-outdoor direction Y.

[0027] The lower plate portion 152 has an outdoor-side extending portion 156 that extends outdoors beyond the connection portion with the outdoor-side plate portion 154. As shown in Fig. 7, the outdoor-side extending portion 156 is formed in a plate shape. The plate surface of the outdoor-side extending portion 156 faces the vertical direction Z. The thickness of the outdoor-side extending portion 156 in the vertical direction Z gradually decreases toward the outdoor side Y1.

[0028] The lower part of the outdoor-side extension 156 has a first frame-side locking part 157. The first frame-side locking part 157 is disposed directly below the glass panel 36. The first frame-side locking part 157 has a downward wall part 157a and an inward wall part 157b. The downward wall part 157a extends downward from the outdoor-side extension 156. The inward wall part 157b extends from the lower end of the downward wall part 157a toward the indoor side Y2. A first ledge-side locking part 414 of the ledge 41, which will be described later, is locked to the first frame-side locking part 157.

[0029] 4, the upper plate portion 151 protrudes toward the indoor side Y2 beyond the connection portion with the indoor side plate portion 155. The end portion of the upper plate portion 151 on the indoor side Y2 has a cover mounting wall portion 158 extending in the up-down direction Z.

[0030] A cover material fixing metal fitting 961 having an L-shape in side view is fixed to the cover mounting wall portion 158 with a screw 962 .

[0031] The cover material 96 is formed in an L-shape in a side view. The cover material 96 has an upper plate portion 963 and a side plate portion 964.

[0032] The upper plate portion 963 is formed in a plate shape. The plate surface of the upper plate portion 963 faces the up-down direction Z. A first bent wall portion 963a extending downward is provided at the end of the upper plate portion 963 on the outdoor side Y1. The first bent wall portion 963a abuts against the cover mounting wall portion 158 of the lower transom 15. The first bent wall portion 963a may be fixed to the cover mounting wall portion 158 with a fastener such as a screw. A second bent wall portion 963b extending toward the indoor side Y2 is provided at the lower end of the first bent wall portion 963a. The second bent wall portion 963b abuts against the upper side of the covering material fixing bracket 961. The first bent wall portion 963a is supported by the covering material fixing bracket 961. The first bent wall portion 963a is fixed to the covering material fixing bracket 961 with a fastener such as a screw.

[0033] The side plate portion 964 extends downward from the end of the upper plate portion 963 on the indoor side Y2. The side plate portion 964 is formed in a plate shape. The plate surface of the side plate portion 964 faces the indoor-outdoor direction Y. A covering material fixing bracket 965, which is L-shaped in side view, is fixed to the lower end of the side plate portion 964 with a fixing device such as a screw. The covering material fixing bracket 965 is fixed to the floor 92 with a fixing device such as a screw.

[0034] The cover material 96 is formed to have substantially the same length as the length of the panel body 3B in the left-right direction X. By attaching the cover material 96, the panel body 3B cannot be seen from the living room 93.

[0035] The lower transom 15 has hollows S1 and S2. The hollow S1 is a space surrounded by the upper plate 151, the outdoor plate 154, the lower plate 152, and the recess 153. The hollow S2 is a space surrounded by the upper plate 151, the recess 153, the lower plate 152, and the indoor plate 155. The hollows S1 and S2 improve the thermal insulation of the lower transom 15.

[0036] As shown in FIG. 7, the flange 41 is engaged with the lower interlining 15. The flange 41 is disposed over substantially the entire length of the lower interlining 15 in the left-right direction X. The flange 41 is made of a metal material such as an aluminum alloy. The other flanges described below are also made of the same material. The flange 41 has a facing plate portion 411 and a facing plate portion 412.

[0037] The sight plate portion 411 is disposed on the outdoor side Y1 of the glass panel 36. The sight plate portion 411 is formed in a plate shape. The plate surface of the sight plate portion 411 faces the indoor-outdoor direction Y. A locking recess 411a recessed toward the outdoor side Y1 is formed on a surface 411b of the upper part of the sight plate portion 411 facing the indoor side Y2.

[0038] A gasket 81 is engaged in the engagement recess 411a. The gasket 81 abuts against the sight plate 411 and the glass panel 36. The gasket 81 seals the gap between the sight plate 411 and the glass panel 36. For example, the gasket 81 is made of a soft resin material, and polyvinyl chloride resin, chloroprene rubber, or the like can be used.

[0039] The projection board portion 412 extends from the lower end of the projection board portion 411 toward the indoor side Y2. The projection board portion 412 is formed in a plate shape. The plate surface of the projection board portion 412 faces the up-down direction Z. A step portion 413 is formed in the middle of the projection board portion 412 in the indoor-outdoor direction Y so that the indoor side Y2 portion of the projection board portion 412 is positioned lower than the outdoor side Y1 portion of the projection board portion 412.

[0040] The indoor side Y2 end of the projection board portion 412 has a first ridge-side locking portion 414. The first ridge-side locking portion 414 has an upward wall portion 414a and an outward wall portion 414b. The upward wall portion 414a extends upward from the indoor side Y2 end of the projection board portion 412. The outward wall portion 414b extends from the upper end of the upward wall portion 414a to the outdoor side Y1.

[0041] The first ridge-side locking portion 414 is locked to the first frame-side locking portion 157 of the lower interlining 15. The upward wall portion 414a of the first ridge-side locking portion 414 is disposed on the indoor side Y2 of the inward wall portion 157b of the first frame-side locking portion 157. The outward wall portion 414b of the first ridge-side locking portion 414 is disposed above the inward wall portion 157b of the first frame-side locking portion 157. Engaging the first ridge-side locking portion 414 with the first frame-side locking portion 157 restricts movement of the ridge 41 downward and toward the outdoor side Y1.

[0042] A heat insulating material 51 is provided between the first ridge-side engaging portion 414 and the first frame-side engaging portion 157. The heat insulating material 51 is arranged over substantially the entire length of the first ridge-side engaging portion 414 and the first frame-side engaging portion 157 in the left-right direction X. The heat insulating material 51 is arranged over the lower side, indoor side Y2, and upper side of the inward-facing wall portion 157b of the first frame-side engaging portion 157. The heat insulating material 51 is arranged over the upper side of the end of the projection board portion 412 on the indoor side Y2, and over the lower side of the outdoor side Y1 and outward-facing wall portion 414b of the upward-facing wall portion 414a of the first ridge-side engaging portion 414. The heat insulating material 51 may be arranged over only a portion of the first ridge-side engaging portion 414 and the first frame-side engaging portion 157 in the left-right direction X, or may be arranged scattered throughout the left-right direction X.

[0043] The heat insulating material 51 is fixed by adhesive, double-sided tape, or other fasteners across the upper side of the indoor side Y2 end of the projection board portion 412 of the batten 41 and the outdoor side Y1 of the upward wall portion 414a and the underside of the outward wall portion 414b of the first batten side engaging portion 414. For example, the material of the heat insulating material 51 can be PDM-S, PVC, ABS, 66 nylon, POM (polyoxymethylene), etc. The same applies to the material of the heat insulating material described below.

[0044] An upwardly recessed locking groove 415 is formed on the underside of the projection plate 412. An airtight material 86 is provided in the locking groove 415. The lower end of the airtight material 86 abuts against the upper surface of the projection plate 422 of the flange 42, which is locked to the upper transom 11 (described later).

[0045] The lower part of the facing plate part 411 has a second frame-side engaging part 416 that protrudes toward the indoor side Y2. The second frame-side engaging part 416 is formed in a plate shape. The plate surface of the second frame-side engaging part 416 faces the vertical direction Z. The second frame-side engaging part 416 is located above the second frame-side engaging part 159, which is the end of the outdoor side Y1 of the outdoor-side extension part 156 of the lower interlining 15.

[0046] The second flange-side engaging portion 416 is engaged with the second frame-side engaging portion 159 of the lower interlining 15. By engaging the second flange-side engaging portion 416 with the second frame-side engaging portion 159, downward movement of the flange 41 is restricted.

[0047] A heat insulating material 52 is provided between the second ridge-side engaging portion 416 and the second frame-side engaging portion 159. The heat insulating material 52 is arranged over substantially the entire length of the second ridge-side engaging portion 416 and the second frame-side engaging portion 159 in the left-right direction X. The heat insulating material 52 is arranged on both the top and bottom of the second ridge-side engaging portion 416 on the surface 411b of the facing plate portion 411, on the upper surface of the second ridge-side engaging portion 416, and on the end surface and undersurface on the indoor side Y2. The heat insulating material 52 may be arranged only over a portion of the second ridge-side engaging portion 416 and the second frame-side engaging portion 159 in the left-right direction X, or may be arranged scattered throughout the left-right direction X.

[0048] The insulation material 52 is fixed by fasteners such as adhesive or double-sided tape over both the upper and lower sides of the second flange side engaging portion 416 on the surface 411b of the flange 41, the upper surface of the second flange side engaging portion 416, and the end surface and lower surface on the indoor side Y2.

[0049] By interposing the heat insulating materials 51, 52 between the batten 41 and the lower runner 15, it is possible to block heat transfer from the batten 41 made of a metal material to the lower runner 15. The temperature of the batten 41, cooled by the cold air on the outdoor side Y1, is prevented from being transferred to the indoor side Y2.

[0050] A downwardly recessed panel groove 18 is formed by the ledge 41, the outdoor side plate portion 154 of the lower transom 15, and the outdoor extension portion 156. A setting block 19 is disposed above the outdoor extension portion 156, which forms the bottom of the panel groove 18. The setting block 19 is a block-shaped member. For example, the setting block 19 can be made of EPDM (ethylene propylene rubber). The setting blocks 19 are disposed at multiple locations in the left-right direction X of the panel groove 18 at intervals. The lower end of the glass panel 36 is installed in the setting block 19. The lower end of the glass panel 36 is disposed in the panel groove 18.

[0051] As shown in Figure 4, a sealant 82, a backup material 83, and a gasket 84 are provided between the outdoor side panel 154 of the lower transom 15 and the glass panel 36. The sealant 82, the backup material 83, and the gasket 84 are arranged in this order from bottom to top. The sealant 82, the backup material 83, and the gasket 84 seal the gap between the outdoor side panel 154 and the glass panel 36.

[0052] The upper transom 11 is disposed below the lower transom 15 with a gap therebelow. The upper transom 11 has an upper plate portion 111, a lower plate portion 112, an outdoor side plate portion 114, an indoor side plate portion 115, and an intermediate plate portion 113.

[0053] The upper plate portion 111 is formed in a plate shape. The plate surface of the upper plate portion 111 faces the vertical direction Z. The upper plate portion 111 is located at the top of the upper interlining 11.

[0054] The lower plate portion 112 is formed in a plate shape. The plate surface of the lower plate portion 112 faces the vertical direction Z. The lower plate portion 112 is disposed below the upper plate portion 111. The lower plate portion 112 is located below the upper interlining 11.

[0055] A recess 112a recessed at the top is formed in the indoor side Y2 portion of the lower plate portion 112. The upper ends of the decorative panel 34, the vacuum insulation board 33, and the fireproof board 32 are arranged in the recess 112a. The indoor side Y2 end of the lower plate portion 112 abuts against the decorative panel 34. This restricts movement of the decorative panel 34 toward the outdoor side Y1.

[0056] The outdoor side plate 114 connects the outdoor side Y1 end of the upper side plate 111 and the outdoor side Y1 end of the lower side plate 112. The outdoor side plate 114 is formed in a plate shape. The plate surface of the outdoor side plate 114 faces the indoor-outdoor direction Y.

[0057] The indoor side plate portion 115 connects the indoor side Y2 end portion of the upper plate portion 111 and the indoor side Y2 end portion of the lower plate portion 112. The indoor side plate portion 115 is formed in a plate shape. The plate surface of the indoor side plate portion 115 faces the indoor-outdoor direction Y. The upper end portion of the indoor side plate portion 115 abuts against the indoor side plate portion 155 of the lower crossbeam 15.

[0058] The intermediate plate portion 113 connects the middle of the upper plate portion 111 in the indoor-outdoor direction Y to the middle of the lower plate portion 112 in the indoor-outdoor direction Y. The intermediate plate portion 113 is formed in a plate shape. The plate surface of the intermediate plate portion 113 faces the indoor-outdoor direction Y. The upper end of the intermediate plate portion 113 abuts against the recess 153 of the lower transom 15.

[0059] The upper plate portion 111 has an outdoor extension portion 116 that extends outdoors beyond the connection portion with the outdoor plate portion 114. As shown in Fig. 7, the outdoor extension portion 116 is formed in a plate shape. The plate surface of the outdoor extension portion 116 faces the vertical direction Z.

[0060] The upper part of the outdoor-side extension 116 has a first frame-side locking portion 117. The first frame-side locking portion 117 is disposed directly above the glass panel 31. The first frame-side locking portion 117 has an upward wall portion 117a and an inward wall portion 117b. The upward wall portion 117a extends upward from the outdoor-side extension 116. The inward wall portion 117b extends from the upper end of the upward wall portion 117a toward the indoor side Y2. A first ledge-side locking portion 424 of the ledge 42, which will be described later, is locked to the first frame-side locking portion 117.

[0061] As shown in Fig. 4, a fire-resistant board fixing frame 97 is fixed to the indoor side plate portion 115 with screws 971. A wall portion 972 extending in the vertical direction Z of the fire-resistant board fixing frame 97 is disposed on the indoor side Y2 of the fire-resistant board 32. This restricts movement of the fire-resistant board 32 toward the indoor side Y2.

[0062] A fire-resistant board fixing metal fitting 98 is fixed to the fire-resistant board 32. The fire-resistant board fixing metal fitting 98 is formed in an L-shape when viewed from the side. The fire-resistant board fixing metal fitting 98 has a first fixing plate portion 981 and a second fixing plate portion 982.

[0063] The first fixing plate portion 981 is formed in a plate shape. The plate surface of the first fixing plate portion 981 faces the indoor / outdoor direction Y. The first fixing plate portion 981 is disposed on the indoor side Y2 of the fire-resistant board 32. The first fixing plate portion 981 is fixed to the fire-resistant board 32 with screws 983.

[0064] The second fixing plate portion 982 extends from the lower end of the first fixing plate portion 981 toward the indoor side Y2. The second fixing plate portion 982 is formed in a plate shape. The plate surface of the second fixing plate portion 982 faces the up-down direction Z. The second fixing plate portion 982 is disposed above the floor 92. The second fixing plate portion 982 is fixed to the floor 92 with screws 984. In this way, the fire-resistant board 32 is fixed to the floor 92.

[0065] The upper transom 11 has hollow portions S11 and S12. The hollow portion S11 is a space surrounded by the upper plate portion 111, the outdoor plate portion 114, the lower plate portion 112, and the intermediate plate portion 113. The hollow portion S12 is a space surrounded by the upper plate portion 111, the intermediate plate portion 113, the lower plate portion 112, and the indoor plate portion 115. The hollow portions S11 and S12 improve the thermal insulation properties of the upper transom 11.

[0066] As shown in Fig. 7, the ledge 42 is engaged with the upper interlining 11. The ledge 42 is disposed over substantially the entire length of the upper interlining 11 in the left-right direction X. The ledge 42 has a sight plate portion 421 and a sight plate portion 422.

[0067] The sight plate portion 421 is disposed on the outdoor side Y1 of the glass panel 31. The sight plate portion 421 is formed in a plate shape. The plate surface of the sight plate portion 421 faces the indoor-outdoor direction Y. A locking recess 421a recessed toward the outdoor side Y1 is formed on a surface 421b of the lower part of the sight plate portion 421 facing the indoor side Y2.

[0068] The gasket 81 is engaged in the engagement recess 421a. The gasket 81 abuts against the sight plate portion 421 and the glass panel 31. The gasket 81 seals the gap between the sight plate portion 421 and the glass panel 31.

[0069] The projection plate portion 422 extends from the upper end of the projection plate portion 421 toward the indoor side Y2. The projection plate portion 422 is formed in a plate shape. The plate surface of the projection plate portion 422 faces in the up-down direction Z.

[0070] The indoor side Y2 end of the projection board portion 422 has a first ridge-side locking portion 424. The first ridge-side locking portion 424 has a downward wall portion 424a and an outward wall portion 424b. The downward wall portion 424a extends downward from the indoor side Y2 end of the projection board portion 422. The outward wall portion 424b extends from the lower end of the downward wall portion 424a to the outdoor side Y1.

[0071] The first ridge-side locking portion 424 is locked to the first frame-side locking portion 117 of the upper interlining 11. The downward wall portion 424a of the first ridge-side locking portion 424 is disposed on the indoor side Y2 of the inward wall portion 117b of the first frame-side locking portion 117. The outward wall portion 424b of the first ridge-side locking portion 424 is disposed below the inward wall portion 117b of the first frame-side locking portion 117. Engaging the first ridge-side locking portion 424 with the first frame-side locking portion 117 restricts movement of the ridge 42 upward and toward the outdoor side Y1.

[0072] A heat insulating material 53 is provided between the first ridge-side engaging portion 424 and the first frame-side engaging portion 117. The heat insulating material 53 is arranged over substantially the entire length of the first ridge-side engaging portion 424 and the first frame-side engaging portion 117 in the left-right direction X. The heat insulating material 53 is arranged over the upper side, indoor side Y2, and lower side of the inward-facing wall portion 117b of the first frame-side engaging portion 117. The heat insulating material 53 is arranged under the indoor side Y2 end of the projection board portion 422, and over the outdoor side Y1 of the downward-facing wall portion 424a of the first ridge-side engaging portion 424 and the upper side of the outward-facing wall portion 424b. The heat insulating material 53 may be arranged only over a portion of the first ridge-side engaging portion 424 and the first frame-side engaging portion 117 in the left-right direction X, or may be arranged scattered throughout the left-right direction X.

[0073] The insulation material 53 is fixed by fasteners such as adhesive or double-sided tape across the underside of the indoor side Y2 end of the projection plate portion 422 of the flange 42, and the outdoor side Y1 and upper side of the outward-facing wall portion 424b of the downward-facing wall portion 424a of the first flange side engaging portion 424.

[0074] The upper part of the facing plate portion 421 has a second frame-side engaging portion 426 that protrudes toward the indoor side Y2. The second frame-side engaging portion 426 is formed in a plate shape. The plate surface of the second frame-side engaging portion 426 faces the vertical direction Z. The second frame-side engaging portion 426 is located below the second frame-side engaging portion 119, which is the end of the outdoor side Y1 of the outdoor-side extension portion 116 of the upper interlining 11.

[0075] The second flange-side engaging portion 426 is engaged with the second frame-side engaging portion 119 of the upper interlining 11. By engaging the second flange-side engaging portion 426 with the second frame-side engaging portion 119, upward movement of the flange 42 is restricted.

[0076] A heat insulating material 54 is provided between the second ridge-side engaging portion 426 and the second frame-side engaging portion 119. The heat insulating material 54 is arranged over substantially the entire length of the second ridge-side engaging portion 426 and the second frame-side engaging portion 119 in the left-right direction X. The heat insulating material 54 is arranged on both the top and bottom of the second ridge-side engaging portion 426 on the surface 421b of the facing plate portion 421, on the upper surface of the second ridge-side engaging portion 426, and on the end surface and undersurface on the indoor side Y2. The heat insulating material 54 may be arranged only over a portion of the second ridge-side engaging portion 426 and the second frame-side engaging portion 119 in the left-right direction X, or may be arranged scattered in the left-right direction X.

[0077] The insulation material 54 is fixed to both the upper and lower sides of the second flange side engaging portion 426 on the surface 421b of the flange 42, the upper surface of the second flange side engaging portion 426, and the end surface and lower surface on the indoor side Y2 using fixing devices such as adhesive or double-sided tape.

[0078] By interposing the heat insulating materials 53, 54 between the batten 42 and the upper interlining 11, it is possible to block heat transfer from the batten 42, which is made of a metal material, to the upper interlining 11. The temperature of the batten 42, cooled by the cold air on the outdoor side Y1, is prevented from being transferred to the indoor side Y2.

[0079] An upwardly recessed panel groove 18 is formed by the ledge 42, the exterior side plate portion 114 of the upper transom 11, and the exterior extension portion 116. The upper end of the glass panel 31 is positioned in the panel groove 18.

[0080] As shown in Figure 4, a sealant 82 and a gasket 84 are provided between the outdoor side panel 114 of the upper transom 11 and the glass panel 31. The sealant 82 and the gasket 84 are arranged in this order from top to bottom. The sealant 82 and the gasket 84 seal the gap between the outdoor side panel 114 and the glass panel 31.

[0081] As shown in FIG. 5, the intermediate interlock 13 has an upper plate portion 131 , a lower plate portion 132 , an outdoor side plate portion 134 , an indoor side plate portion 135 , and an extending plate portion 133 .

[0082] The upper plate portion 131 is located at the top of the intermediate interlock 13. The upper plate portion 131 is formed in a stepped shape so that the indoor side Y2 portion of the upper plate portion 131 is positioned higher than the outdoor side Y1 portion of the upper plate portion 131. The lower end of the fire-resistant board 32, the lower end of the vacuum insulation board 33, and the lower end of the decorative panel 34 are installed on the indoor side Y2 portion of the upper plate portion 131. A decorative panel holding portion 131a that protrudes upward is provided in the middle of the upper plate portion 131 in the indoor / outdoor direction Y. The decorative panel holding portion 131a abuts against the surface of the decorative panel 34 that faces the outdoor side Y1.

[0083] The lower plate portion 132 is disposed below the upper plate portion 131. The lower plate portion 132 is located below the intermediate interlock 13. The lower plate portion 132 is formed in a stepped shape so that the indoor side Y2 portion of the lower plate portion 132 is disposed lower than the outdoor side Y1 portion of the lower plate portion 132.

[0084] The outdoor side plate 134 connects the outdoor side Y1 end of the upper side plate 131 and the outdoor side Y1 end of the lower side plate 132. The outdoor side plate 134 is formed in a plate shape. The plate surface of the outdoor side plate 134 faces the indoor-outdoor direction Y.

[0085] The indoor side plate portion 135 connects the indoor side Y2 end portion of the upper plate portion 131 and the indoor side Y2 end portion of the lower plate portion 132. The indoor side plate portion 135 is formed in a plate shape. The plate surface of the indoor side plate portion 135 faces the indoor / outdoor direction Y.

[0086] 8, the extending plate portion 133 extends from the middle of the outdoor-side plate portion 134 in the vertical direction Z to the outdoor side Y1. The extending plate portion 133 is formed in a plate shape. The plate surface of the extending plate portion 133 faces in the vertical direction Z.

[0087] The lower portion of the extending plate portion 133 has a first frame side locking portion 137 and a second frame side locking portion 139 .

[0088] The first frame-side locking portion 137 is disposed directly below the glass panel 31. The first frame-side locking portion 137 has a downward wall portion 137a and an inward wall portion 137b. The downward wall portion 137a extends downward from the extension plate portion 133. The inward wall portion 137b extends from the lower end of the downward wall portion 137a toward the indoor side Y2. A first ledge-side locking portion 434 of the ledge 43, which will be described later, is locked to the first frame-side locking portion 137.

[0089] The second frame-side locking portion 139 is disposed on the outdoor side Y1 of the first frame-side locking portion 137. The second frame-side locking portion 139 has a downward wall portion 139a and an inward wall portion 139b. The downward wall portion 139a extends downward from the extension plate portion 133. The inward wall portion 139b extends from the lower end of the downward wall portion 139a toward the indoor side Y2. A second ledge-side locking portion 436 of the ledge 43, which will be described later, is locked to the second frame-side locking portion 139.

[0090] 5, the intermediate interlock 13 has a hollow portion S21. The hollow portion S21 is a space surrounded by the upper plate portion 131, the outdoor plate portion 134, the lower plate portion 132, and the indoor plate portion 135. The hollow portion S21 improves the thermal insulation of the intermediate interlock 13.

[0091] As shown in Fig. 8, the pressing edge 43 is engaged with the intermediate interlock 13. The pressing edge 43 is disposed over substantially the entire length of the intermediate interlock 13 in the left-right direction X. The pressing edge 43 has a sight plate portion 431 and a sight plate portion 432.

[0092] The sight plate portion 431 is disposed on the outdoor side Y1 of the glass panel 31 and the glass panel 36. The sight plate portion 431 is formed in a plate shape. The plate surface of the sight plate portion 431 faces the indoor-outdoor direction Y. Locking recesses 431a recessed toward the outdoor side Y1 are formed on the upper and lower parts of the surface 431b of the sight plate portion 431 facing the indoor side Y2.

[0093] A gasket 81 is engaged in the engagement recess 431a. The gasket 81 engaged in the upper engagement recess 431a abuts against the sight plate portion 431 and the glass panel 31. The gasket 81 seals the gap between the sight plate portion 431 and the glass panel 31. The gasket 81 engaged in the lower engagement recess 431a abuts against the sight plate portion 431 and the glass panel 36. The gasket 81 seals the gap between the sight plate portion 431 and the glass panel 36.

[0094] The projection plate portion 432 extends from the middle of the projection plate portion 431 in the vertical direction Z toward the indoor side Y2. The projection plate portion 432 is formed in a plate shape. The plate surface of the projection plate portion 432 faces in the vertical direction Z.

[0095] The indoor side Y2 end of the projection board portion 432 has a first ridge-side locking portion 434. The first ridge-side locking portion 434 has an upward wall portion 434a and an outward wall portion 434b. The upward wall portion 434a extends upward from the indoor side Y2 end of the projection board portion 432. The outward wall portion 434b extends from the upper end of the upward wall portion 434a to the outdoor side Y1.

[0096] The first ridge-side locking portion 434 is locked to the first frame-side locking portion 137 of the intermediate interlining 13. The upward wall portion 434a of the first ridge-side locking portion 434 is disposed on the indoor side Y2 of the outward wall portion 434b of the first frame-side locking portion 137. The outward wall portion 434b of the first ridge-side locking portion 434 is disposed above the inward wall portion 137b of the first frame-side locking portion 137. Engaging the first ridge-side locking portion 434 with the first frame-side locking portion 137 restricts movement of the ridge 43 downward and toward the outdoor side Y1.

[0097] A heat insulating material 55 is provided between the first ridge-side engaging portion 434 and the first frame-side engaging portion 137. The heat insulating material 55 is arranged over substantially the entire length of the first ridge-side engaging portion 434 and the first frame-side engaging portion 137 in the left-right direction X. The heat insulating material 55 is arranged over the upper side of the inward-facing wall portion 137b of the first frame-side engaging portion 137, the indoor side Y2 of the downward-facing wall portion 137a, and the lower side of the extension plate portion 133. The heat insulating material 55 is arranged over the lower side, outdoor side Y1, and upper side of the outward-facing wall portion 434b of the first ridge-side engaging portion 434. The heat insulating material 55 may be arranged only over a portion of the first ridge-side engaging portion 434 and the first frame-side engaging portion 137 in the left-right direction X, or may be arranged scattered throughout the left-right direction X.

[0098] The heat insulating material 55 is fixed to the underside, outdoor side Y1 and upper side of the outward wall portion 434b of the first flange side engaging portion 434 of the flange 43 with fixing devices such as adhesive, double-sided tape or the like.

[0099] The projection board portion 432 has a second ridge-side engaging portion 436 in the middle in the indoor-outdoor direction Y. The second ridge-side engaging portion 436 has an upward wall portion 436a and an outward wall portion 436b. The upward wall portion 436a extends upward from the middle of the projection board portion 432 in the indoor-outdoor direction Y. The outward wall portion 436b extends from the upper end of the upward wall portion 436a to the outdoor side Y1.

[0100] The second ridge-side locking portion 436 is locked to the second frame-side locking portion 139 of the intermediate interlining 13. The upward wall portion 436a of the second ridge-side locking portion 436 is disposed on the indoor side Y2 of the inward wall portion 139b of the second frame-side locking portion 139. The outward wall portion 436b of the second ridge-side locking portion 436 is disposed above the inward wall portion 139b of the second frame-side locking portion 139. Engaging the second ridge-side locking portion 436 with the second frame-side locking portion 139 restricts movement of the ridge 43 downward and toward the outdoor side Y1.

[0101] A heat insulating material 56 is provided between the second ridge-side engaging portion 436 and the second frame-side engaging portion 139. The heat insulating material 56 is arranged over substantially the entire length of the second ridge-side engaging portion 436 and the second frame-side engaging portion 139 in the left-right direction X. The heat insulating material 56 is arranged over the lower side of the inward-facing wall portion 139b of the second frame-side engaging portion 139, the indoor side Y2, the upper side, the indoor side Y2 of the downward-facing wall portion 139a, and the lower side of the extension plate portion 133. The heat insulating material 56 is arranged over the upper side of the projection plate portion 432, the outdoor side Y1 of the upward-facing wall portion 436a of the second ridge-side engaging portion 436, and the lower side, outdoor side Y1, and upper side of the outward-facing wall portion 436b. The heat insulating material 56 may be arranged only over a portion of the second ridge-side engaging portion 436 and the second frame-side engaging portion 139 in the left-right direction X, or may be arranged scattered throughout the left-right direction X.

[0102] The insulation material 56 is fixed by fasteners such as adhesive or double-sided tape over the upper side of the projection plate portion 432 of the flange 43, the outdoor side Y1 of the upward wall portion 436a of the second flange side engaging portion 436, and the lower side, outdoor side Y1 and upper side of the outward wall portion 436b.

[0103] By interposing the heat insulating materials 55, 56 between the batten 43 and the intermediate interlining 13, it is possible to block heat transfer from the batten 43 made of a metal material to the intermediate interlining 13. The temperature of the batten 43 cooled by the cold air on the outdoor side Y1 is prevented from being transferred to the indoor side Y2.

[0104] At the top of the intermediate transom 13, a downwardly recessed panel groove 18 is formed by the ledge 43, the extension plate portion 133 of the intermediate transom 13, and the exterior side plate portion 134. The lower end of the glass panel 31 is positioned in the panel groove 18.

[0105] A sealant 82 and a gasket 84 are provided between the exterior side panel 134 of the intermediate transom 13 and the glass panel 31. The sealant 82 and the gasket 84 are arranged in this order from bottom to top. The sealant 82 and the gasket 84 seal the gap between the exterior side panel 134 and the glass panel 31.

[0106] At the bottom of the intermediate transom 13, an upwardly recessed panel groove 18 is formed by the ledge 43 and the lower plate portion 132 of the intermediate transom 13. The upper end of the glass panel 36 is disposed in the panel groove 18.

[0107] A sealant 82 and a gasket 84 are provided between the lower plate portion 132 of the intermediate transverse section 13 and the glass panel 36. The sealant 82 and the gasket 84 are arranged in this order from top to bottom. The sealant 82 and the gasket 84 seal the gap between the lower plate portion 132 and the glass panel 36.

[0108] 6, the upright 20 has a first upright member 21 and a second upright member 26. The first upright member 21 and the second upright member 26 are arranged opposite each other in the left-right direction X. In describing each of the first upright member 21 and the second upright member 26, the side closer to the opposing upright member in the left-right direction X will be referred to as one side, and the side away from the opposing upright member will be referred to as the other side.

[0109] The first upright member 21 has a side plate portion 211 , an indoor plate portion 212 , a first intermediate plate portion 213 , a second intermediate plate portion 214 , an outdoor plate portion 215 , and an extending plate portion 216 .

[0110] The side plate portion 211 is formed in a plate shape. The plate surface of the side plate portion 211 faces the left-right direction X.

[0111] A decorative panel support fitting 71 is fixed to the side plate portion 211. A support wall portion 711 of the decorative panel support fitting 71 extending in the left-right direction X and the up-down direction Z abuts against the surface of the decorative panel 34 facing the outdoor side Y1. This restricts movement of the decorative panel 34 toward the outdoor side Y1.

[0112] A first holding frame 72 is fixed to the side plate portion 211. A first wall portion 721 of the first holding frame 72 extending in the indoor-outdoor direction Y and the up-down direction Z is disposed with a small gap between it and the end face of the vacuum insulation board 33 in the left-right direction X. This restricts movement of the vacuum insulation board 33 in the left-right direction X. The first wall portion 721 may abut against the end face of the vacuum insulation board 33 in the left-right direction X.

[0113] The second wall portion 722 of the first holding frame 72, which extends in the left-right direction X and the up-down direction Z, is disposed between the fire-resistant board 32 and the vacuum insulation board 33. The vacuum insulation board 33 and the decorative panel 34 are sandwiched between the second wall portion 722 and the support wall portion 711 of the decorative panel support bracket 71, thereby restricting movement of the vacuum insulation board 33 and the decorative panel 34 in the indoor-outdoor direction Y.

[0114] The second holding frame 73 is fixed to a third wall portion 723 extending in the left-right direction X and the up-down direction Z of the first holding frame 72. A wall portion 731 extending in the left-right direction X and the up-down direction Z of the second holding frame 73 is disposed with a slight gap between it and the surface of the fire-resistant board 32 facing the indoor side Y2. The fire-resistant board 32 is fixed to the floor 92 with fixing brackets 74.

[0115] The indoor plate portion 212 extends from the end portion of the side plate portion 211 on the indoor side Y2 toward the opposing second upright member 26, which is one side in the left-right direction X. The indoor plate portion 212 is formed in a plate shape. The plate surface of the indoor plate portion 212 faces the indoor-outdoor direction Y.

[0116] The first intermediate plate portion 213 extends from the middle of the side plate portion 211 in the indoor-outdoor direction Y toward the opposing second upright member 26. The first intermediate plate portion 213 is formed in a plate shape. The plate surface of the first intermediate plate portion 213 faces in the indoor-outdoor direction Y.

[0117] The second intermediate plate portion 214 extends from the middle of the side plate portion 211 in the indoor-outdoor direction Y toward the opposing second upright member 26. The second intermediate plate portion 214 is disposed on the outdoor side Y1 of the first intermediate plate portion 213. The second intermediate plate portion 214 is formed in a plate shape. The plate surface of the second intermediate plate portion 214 faces the indoor-outdoor direction Y.

[0118] The outdoor plate portion 215 extends from the end of the side plate portion 211 on the outdoor side Y1 toward the opposing second upright member 26. The outdoor plate portion 215 is formed in a plate shape. The plate surface of the outdoor plate portion 215 faces the indoor-outdoor direction Y.

[0119] The extension plate portion 216 extends from one end of the outdoor plate portion 215 in the left-right direction X to the outdoor side Y1.

[0120] An indoor side ridge 49 is fitted into the corner formed by the outdoor plate portion 215 and the extension plate portion 216. As shown in Figure 9, a sealant 82 and a gasket 84 are arranged between the indoor side ridge 49 and the glass panel 31, side by side from the end face side of the glass panel 31 in the left-right direction X to the center side of the glass panel 31 in the left-right direction X. The sealant 82 and the gasket 84 seal the gap between the indoor side ridge 49 and the glass panel 31.

[0121] A locking recess 221 recessed toward the other side in the left-right direction X is formed on a surface of the extending plate portion 216 facing one side in the left-right direction X.

[0122] The extending plate portion 216 has a first frame-side locking portion 222. The first frame-side locking portion 222 is disposed away from one side of the bottom portion 221a of the locking recess 221 in the left-right direction X. A gap is formed between the bottom portion 221a and the first frame-side locking portion 222. A first pressing-edge-side locking portion 444 of the pressing edge 44, which will be described later, is locked to the first frame-side locking portion 222.

[0123] The ledge 44 is engaged with the first upright member 21. The ledge 44 has a facing plate portion 441 and a facing plate portion 442.

[0124] The sight plate portion 441 is disposed on the outdoor side Y1 of the glass panel 31. The sight plate portion 441 is formed in a plate shape. The plate surface of the sight plate portion 441 faces the indoor-outdoor direction Y. A locking recess 441a recessed toward the outdoor side Y1 is formed on a surface 441b of the sight plate portion 441 on the other side in the left-right direction X, facing the indoor side Y2.

[0125] The gasket 81 is engaged in the engagement recess 441a. The gasket 81 abuts against the sight plate portion 441 and the glass panel 31. The gasket 81 seals the gap between the sight plate portion 441 and the glass panel 31.

[0126] The projection plate portion 442 extends from one end of the projection plate portion 441 in the left-right direction X toward the indoor side Y2. The projection plate portion 442 is formed in a plate shape. The plate surface of the projection plate portion 442 faces in the left-right direction X.

[0127] The indoor side Y2 end of the projection board portion 442 has a first ridge-side locking portion 444. The first ridge-side locking portion 444 has an outward-facing wall portion 444a and an outdoor-facing wall portion 444b. The outward-facing wall portion 444a extends from the indoor side Y2 end of the projection board portion 442 in a direction away from the second upright member 26, which is the other side in the left-right direction X. The outdoor-facing wall portion 444b extends from the other side end of the outward-facing wall portion 444a in the left-right direction X to the outdoor side Y1.

[0128] The first ridge-side locking portion 444 is locked to the first frame-side locking portion 222 of the first upright member 21. The outward-facing wall portion 444a of the first ridge-side locking portion 444 is disposed on the indoor side Y2 of the first frame-side locking portion 222. The outdoor-facing wall portion 444b of the first ridge-side locking portion 444 is disposed on the other side in the left-right direction X of the first frame-side locking portion 222. Engaging the first ridge-side locking portion 444 with the first frame-side locking portion 222 restricts movement of the ridge 44 to one side in the left-right direction X and to the outdoor side Y1.

[0129] A heat insulating material 57 is provided between the first ledge-side locking portion 444 and the first frame-side locking portion 222. The heat insulating material 57 is arranged over the surface of the first frame-side locking portion 222 facing the other side in the left-right direction X, the surface facing the indoor side Y2, and the surface facing one side in the left-right direction X. The heat insulating material 57 is arranged over the surface of the projection board portion 442 facing the other side in the left-right direction X, the surface of the outward-facing wall portion 444a facing the outdoor side Y1, and the surface of the outdoor-facing wall portion 444b facing one side in the left-right direction X.

[0130] The heat insulating material 57 is fixed by adhesive, double-sided tape or other fasteners across the surface facing the other side in the left-right direction X of the projection plate portion 442 of the pressing edge 44, the surface facing the outdoor side Y1 of the outward-facing wall portion 444a, and the surface facing one side in the left-right direction X of the outdoor-facing wall portion 444b.

[0131] The surface 441b of the facing plate portion 441 has a second frame-side engaging portion 446 that protrudes toward the indoor side Y2. The second frame-side engaging portion 446 is formed in a plate shape. The plate surface of the second frame-side engaging portion 446 faces the left-right direction X. The second frame-side engaging portion 446 is located on the other side in the left-right direction X of the second frame-side engaging portion 224, which is the end of the extension plate portion 216 of the first upright member 21 on the outdoor side Y1.

[0132] The second pressing-edge side locking portion 446 is locked to the second frame-side locking portion 224 of the first upright member 21. By locking the second pressing-edge side locking portion 446 to the second frame-side locking portion 224, movement of the pressing edge 44 to one side in the left-right direction X is restricted.

[0133] A heat insulating material 58 is provided between the second edge-side engaging portion 446 and the second frame-side engaging portion 224. The heat insulating material 58 is arranged on both sides in the left-right direction X of the second edge-side engaging portion 446 on the surface 441b of the facing plate portion 441, on the surface facing one side in the left-right direction X of the second edge-side engaging portion 446, on the end surface on the indoor side Y2, and on the surface facing the other side in the left-right direction X.

[0134] The heat insulating material 58 is fixed by fasteners such as adhesive or double-sided tape over both sides in the left-right direction X of the second edge-side engaging portion 446 on the surface 441b of the facing plate portion 441, the surface facing one side in the left-right direction X of the second edge-side engaging portion 446, the end surface on the indoor side Y2, and the surface facing the other side in the left-right direction X.

[0135] By interposing the heat insulating materials 57, 58 between the flange 44 and the first upright member 21, it is possible to block heat transfer from the flange 44 made of a metal material to the first upright member 21. The temperature of the flange 44, cooled by the cold air on the outdoor side Y1, is prevented from being transferred to the indoor side Y2.

[0136] The pressing edge 44, the outdoor plate portion 215 of the first upright member 21, and the extending plate portion 216 form a panel groove 18 that is recessed to one side in the left-right direction X. An end of the glass panel 31 in the left-right direction X is disposed in the panel groove 18.

[0137] As shown in Figure 6, the second upright member 26 has a side plate portion 261, an indoor plate portion 262, a first intermediate plate portion 263, a second intermediate plate portion 264, an outdoor plate portion 265, and an extending plate portion 266.

[0138] The side plate portion 261 is formed in a plate shape. The plate surface of the side plate portion 261 faces the left-right direction X. The side plate portion 261 is disposed opposite the side plate portion 211 of the first upright member 21 in the left-right direction X.

[0139] A decorative panel support fitting 71 is fixed to the side plate portion 261. A support wall portion 711 of the decorative panel support fitting 71 extending in the left-right direction X and the up-down direction Z abuts against the surface of the decorative panel 34 facing the outdoor side Y1. This restricts movement of the decorative panel 34 toward the outdoor side Y1.

[0140] A first holding frame 72 is fixed to the side plate portion 261. A first wall portion 721 of the first holding frame 72 extending in the indoor-outdoor direction Y and the up-down direction Z is disposed with a small gap between it and the end face of the vacuum insulation board 33 in the left-right direction X. This restricts movement of the vacuum insulation board 33 in the left-right direction X. The first wall portion 721 may abut against the end face of the vacuum insulation board 33 in the left-right direction X.

[0141] The second wall portion 722 of the first holding frame 72, which extends in the left-right direction X and the up-down direction Z, is disposed between the fire-resistant board 32 and the vacuum insulation board 33. The vacuum insulation board 33 and the decorative panel 34 are sandwiched between the second wall portion 722 and the support wall portion 711 of the decorative panel support bracket 71, thereby restricting movement of the vacuum insulation board 33 and the decorative panel 34 in the indoor-outdoor direction Y.

[0142] The second holding frame 73 is fixed to a third wall portion 723 extending in the left-right direction X and the up-down direction Z of the first holding frame 72. A wall portion 731 extending in the left-right direction X and the up-down direction Z of the second holding frame 73 is disposed with a slight gap between it and the surface of the fire-resistant board 32 facing the indoor side Y2. The fire-resistant board 32 is fixed to the floor 92 with fixing brackets 74.

[0143] The indoor board portion 262 extends from the end of the side board portion 261 on the indoor side Y2 to the opposing first upright member 21 side, which is one side in the left-right direction X. The indoor board portion 262 is formed in a plate shape. The plate surface of the indoor board portion 262 faces the indoor-outdoor direction Y. The end of the indoor board portion 262 in the left-right direction X is arranged on the outdoor side Y1 of the end of the indoor board portion 212 of the first upright member 21 in the left-right direction X. The end of the indoor board portion 262 in the left-right direction X may also be arranged on the indoor side Y2 of the end of the indoor board portion 212 of the first upright member 21 in the left-right direction X.

[0144] The first intermediate plate portion 263 extends from the middle of the side plate portion 261 in the indoor-outdoor direction Y toward the opposing first upright member 21. The first intermediate plate portion 263 is formed in a plate shape. The plate surface of the first intermediate plate portion 263 faces the indoor-outdoor direction Y. An end portion of the first intermediate plate portion 263 in the left-right direction X is arranged on the outdoor side Y1 of the end portion of the first intermediate plate portion 213 of the first upright member 21 in the left-right direction X. The end portion of the first intermediate plate portion 263 in the left-right direction X may also be arranged on the indoor side Y2 of the end portion of the first intermediate plate portion 213 of the first upright member 21 in the left-right direction X.

[0145] The second intermediate plate portion 264 extends from the middle of the side plate portion 261 in the indoor-outdoor direction Y toward the opposing first upright member 21. The second intermediate plate portion 264 is arranged on the outdoor side Y1 of the first intermediate plate portion 263. The first intermediate plate portion 263 is formed in a plate shape. The plate surface of the second intermediate plate portion 264 faces the indoor-outdoor direction Y. An end portion in the left-right direction X of the second intermediate plate portion 264 is arranged on the indoor side Y2 of an end portion in the left-right direction X of the second intermediate plate portion 214 of the first upright member 21. An end portion in the left-right direction X of the second intermediate plate portion 264 may be arranged on the outdoor side Y1 of an end portion in the left-right direction X of the second intermediate plate portion 214 of the first upright member 21.

[0146] The outdoor plate portion 265 extends from the end of the side plate portion 261 on the outdoor side Y1 toward the opposing first upright member 21. The outdoor plate portion 265 is formed in a plate shape. The plate surface of the outdoor plate portion 265 faces the indoor-outdoor direction Y.

[0147] The extension plate portion 266 extends from one end of the exterior plate portion 265 in the left-right direction X to the exterior side Y1.

[0148] An indoor side ridge 49 is fitted into the corner formed by the outdoor plate portion 265 and the extension plate portion 266. As shown in Figure 9, a sealant 82 and a gasket 84 are arranged between the indoor side ridge 49 and the glass panel 31, side by side from the end face side of the glass panel 31 in the left-right direction X to the center side of the glass panel 31 in the left-right direction X. The sealant 82 and the gasket 84 seal the gap between the indoor side ridge 49 and the glass panel 31.

[0149] Similar to the first upright member 21, a locking recess 221 recessed toward the other side in the left-right direction X is formed on the surface of the extending plate portion 266 facing one side in the left-right direction X.

[0150] The first frame-side locking portion 222 of the second upright member 26 has a configuration obtained by left-right mirroring the first frame-side locking portion 222 of the first upright member 21, and is therefore designated by the same reference numeral and its description will be omitted. The second frame-side locking portion 224 of the second upright member 26 has a configuration obtained by left-right mirroring the second frame-side locking portion 224 of the first upright member 21, and is therefore designated by the same reference numeral and its description will be omitted. The pressing edge 44 that is locked by the first frame-side locking portion 222 and the second frame-side locking portion 224 of the second upright member 26 has a configuration obtained by left-right mirroring the pressing edge 44 that is locked by the first frame-side locking portion 222 and the second frame-side locking portion 224 of the first upright member 21, and is therefore designated by the same reference numeral and its description will be omitted.

[0151] As shown in Fig. 6, the mullions 20 have hollow portions S31 and S32. The hollow portion S31 is a space surrounded by the indoor plate portion 212, the side plate portion 211, and the first intermediate plate portion 213 of the first mullions member 21, and the first intermediate plate portion 263, the side plate portion 261, and the indoor plate portion 262 of the second mullions member 26. The hollow portion S32 is a space surrounded by the first intermediate plate portion 213, the side plate portion 211, and the second intermediate plate portion 214 of the first mullions member 21, and the second intermediate plate portion 264, the side plate portion 261, and the first intermediate plate portion 263 of the second mullions member 26. The hollow portions S31 and S32 improve the thermal insulation of the mullions 20.

[0152] In the curtain wall 100, insulating materials 51, 52 are interposed between the batten 41 and the lower batten 15. Heat transfer from the batten 41 to the lower batten 15 is blocked. Heat insulating materials 53, 54 are interposed between the batten 42 and the upper batten 11. Heat transfer from the batten 42 to the upper batten 11 is blocked. Heat insulating materials 55, 56 are interposed between the batten 43 and the intermediate batten 13. Heat transfer from the batten 43 to the intermediate batten 13 is blocked. Heat insulating materials 57, 58 are interposed between the batten 44 and the mullion 20. Heat transfer from the batten 44 to the mullion 20 is blocked. The temperature of the battens 41, 42, 43, 44, cooled by the cold air on the outdoor side Y1, is prevented from being transferred to the indoor side Y2, thereby improving insulation.

[0153] The first frame side locking portion 157 of the flange 41 is locked to the first frame side locking portion 157 of the lower transom 15. The second flange side locking portion 416 of the flange 41 is locked to the second frame side locking portion 159 of the lower transom 15. The first flange side locking portion 424 of the flange 42 is locked to the first frame side locking portion 117 of the upper transom 11. The second flange side locking portion 426 of the flange 42 is locked to the second frame side locking portion 119 of the upper transom 11. The first flange side locking portion 434 of the flange 43 is locked to the first frame side locking portion 137 of the intermediate transom 13. The second flange side locking portion 436 of the flange 43 is locked to the second frame side locking portion 139 of the intermediate transom 13. The first ridge-side engaging portion 444 of the ridge 44 is engaged with the first frame-side engaging portion 222 of the mullion 20. The second ridge-side engaging portion 446 of the ridge 44 is engaged with the second frame-side engaging portion 224 of the mullion 20. There is no need to complicate the processing of the lower transom 15, upper transom 11, intermediate transom 13 and the mullion 20 itself, allowing for a simple configuration.

[0154] The insulating materials 51 and 52 are fixed to the batten 41. The insulating materials 53 and 54 are fixed to the batten 42. The insulating materials 55 and 56 are fixed to the batten 43. The insulating materials 57 and 58 are fixed to the mullion 20. The insulating materials can be easily installed by simply engaging the batten to which the insulating materials are fixed to the frame material.

[0155] The panel body 3B, which is arranged on the indoor side Y2 of the glass panel 31, has a fireproof board 32 and a vacuum insulation board 33. The vacuum insulation board 33, which is arranged on the outdoor side Y1 of the fireproof board 32, is formed in a plate shape rather than being made of sprayed rock wool as in the past, and can be made thinner. This allows for improved insulation without affecting the floor area of ​​the living room 93.

[0156] (Second embodiment) The curtain wall according to the second embodiment will be described mainly with reference to Figures 10 to 12. In the description of the embodiment shown below, the same members as those described above are given the same reference numerals, and the description thereof will be omitted.

[0157] As shown in Figure 10, the insulating material 51A placed between the flange 41 and the lower interlining 15 is continuously arranged from the engagement portion between the first flange side engagement portion 414 of the flange 41 and the first frame side engagement portion 157 of the lower interlining 15 to the engagement portion between the second flange side engagement portion 416 of the flange 41 and the second frame side engagement portion 159 of the lower interlining 15.

[0158] The heat insulating material 51A is disposed over substantially the entire length of the batten 41 and the lower interlining 15 in the left-right direction X. The heat insulating material 51A is disposed over the upper side of the inward-facing wall portion 157b of the first frame-side engaging portion 157 of the lower interlining 15, the indoor side Y2, the lower side, the lower side of the second frame-side engaging portion 159, and the upper side of the end portion of the second frame-side engaging portion 159 on the outdoor side Y1. The heat insulating material 51A is disposed over the lower side of the outward-facing wall portion 414b of the first batten 414, the outdoor side Y1 of the upward-facing wall portion 414a, the upper side of the projection plate portion 412, the surface 411b of the sight plate portion 411 below the second batten-side engaging portion 416, the lower surface of the second batten-side engaging portion 416, the end surface on the indoor side Y2, the upper surface, and the surface 411b of the sight plate portion 411 above the second batten-side engaging portion 416. The heat insulating material 51A is also arranged at the corners, which are the connection portions between the facing plate portion 411 and the facing plate portion 412 of the ledge 41. The heat insulating material 51A may be arranged only in a portion of the ledge 41 and the lower interlining 15 in the left-right direction X, or may be arranged scattered in the left-right direction X.

[0159] The insulating material 51A is fixed by fixing devices such as adhesive or double-sided tape over the underside of the outward wall portion 414b of the first ridge side engaging portion 414 of the ridge 41, the outdoor side Y1 of the upward wall portion 414a, the upper side of the projection plate portion 412, the surface 411b of the sight plate portion 411 below the second ridge side engaging portion 416, the underside of the second ridge side engaging portion 416, the end face and upper surface on the indoor side Y2, and the surface 411b of the sight plate portion 411 above the second ridge side engaging portion 416.

[0160] By interposing the heat insulating material 51A between the ridge 41 and the lower ridge 15, it is possible to block heat transfer from the ridge 41 made of a metal material to the lower ridge 15. The temperature of the ridge 41, cooled by the cold air on the outdoor side Y1, is prevented from being transferred to the indoor side Y2.

[0161] The insulating material 53A placed between the flange 42 and the upper liner 11 is arranged continuously from the engagement portion between the first flange side engagement portion 424 of the flange 42 and the first frame side engagement portion 117 of the upper liner 11 to the engagement portion between the second flange side engagement portion 426 of the flange 42 and the second frame side engagement portion 119 of the upper liner 11.

[0162] The heat insulating material 53A is arranged over substantially the entire length in the left-right direction X of the ledge 42 and the upper interlining 11. The heat insulating material 53A is arranged over the underside of the inward wall portion 117b of the first frame-side locking portion 117 of the upper interlining 11, the indoor side Y2, the upper side, above the second frame-side locking portion 119, and the underside of the end of the second frame-side locking portion 119 on the outdoor side Y1. The heat insulating material 53A is disposed over the upper side of the outward-facing wall portion 424b of the first ridge-side engaging portion 424 of the ridge 42, the outdoor side Y1 of the downward-facing wall portion 424a, the lower side of the projection plate portion 422, the upper side of the second ridge-side engaging portion 426 on the surface 421b of the projection plate portion 421, the upper surface of the second ridge-side engaging portion 426, the end surface on the indoor side Y2, the lower surface, and the lower side of the second ridge-side engaging portion 426 on the surface 421b of the projection plate portion 421. The heat insulating material 53A is also disposed at the corners where the projection plate portion 421 and the projection plate portion 422 of the ridge 42 connect. The heat insulating material 53A may be disposed only on a portion of the ridge 42 and the upper interlining 11 in the left-right direction X, or may be disposed scattered throughout the left-right direction X.

[0163] The insulating material 53A is fixed with fixing devices such as adhesive or double-sided tape over the upper side of the outward wall portion 424b of the first flange side engaging portion 424 of the flange 42, the outdoor side Y1 of the downward wall portion 424a, the lower side of the projection plate portion 422, the upper side of the second flange side engaging portion 426 on the surface 421b of the sight plate portion 421, the upper surface of the second flange side engaging portion 426, the end surface on the indoor side Y2, the lower surface and the lower side of the second flange side engaging portion 426 on the surface 421b of the sight plate portion 421.

[0164] By interposing the heat insulating material 53A between the batten 42 and the upper runner 11, it is possible to block heat transfer from the batten 42, which is made of a metal material, to the upper runner 11. The temperature of the batten 42, cooled by the cold air on the outdoor side Y1, is prevented from being transferred to the indoor side Y2.

[0165] As shown in Figure 11, the insulating material 55A is fixed by fasteners such as adhesive or double-sided tape over the underside, outdoor side Y1, and upper side of the outward-facing wall portion 434b of the first flange side engaging portion 434 of the flange 43, the indoor side Y2 of the upward-facing wall portion 434a, the underside of the projection board portion 432, and the surface 431b of the projection board portion 431.

[0166] The insulating material 56A is fixed by fixing devices such as adhesive or double-sided tape over the upper side, outdoor side Y1, and lower side of the outward wall portion 436b of the second flange side engaging portion 436 of the flange 43, the outdoor side Y1 of the upward wall portion 436a, the upper side of the projection plate portion 432, and the surface 431b of the projection plate portion 432.

[0167] By interposing the heat insulating materials 55A, 56A between the ridge 43 and the intermediate interlining 13, it is possible to block heat transfer from the ridge 43 made of a metal material to the intermediate interlining 13. The temperature of the ridge 43 cooled by the cold air on the outdoor side Y1 is prevented from being transferred to the indoor side Y2.

[0168] As shown in Figure 12, the insulating material 57A arranged between the flange 44 and the upright 20 is arranged continuously from the engagement portion between the first flange side engagement portion 444 of the flange 44 and the first frame side engagement portion 222 of the upright 20 to the engagement portion between the second flange side engagement portion 446 of the flange 44 and the second frame side engagement portion 224 of the upright 20.

[0169] The heat insulating material 57A is fixed by fixing devices such as adhesive or double-sided tape over the surface facing one side in the left-right direction X of the outdoor-facing wall portion 444b of the edge 44, the surface facing the outdoor side Y1 of the outward-facing wall portion 444a, the surface facing the other side in the left-right direction X of the projection plate portion 442, the surface 441b of the projection plate portion 441, both sides in the left-right direction X of the second edge side engaging portion 446 and the surface facing the indoor side Y2.

[0170] By interposing the heat insulating material 57A between the ridge 44 and the mullion 20, it is possible to block heat transfer from the ridge 44, which is made of a metal material, to the mullion 20. The temperature of the ridge 44, cooled by the cold air on the outdoor side Y1, is prevented from being transferred to the indoor side Y2.

[0171] In the curtain wall 100, a thermal insulator 51A is interposed between the batten 41 and the lower batten 15. This blocks heat transfer from the batten 41 to the lower batten 15. A thermal insulator 53A is interposed between the batten 42 and the upper batten 11. This blocks heat transfer from the batten 42 to the upper batten 11. A thermal insulator 55A, 56A is interposed between the batten 43 and the intermediate batten 13. This blocks heat transfer from the batten 43 to the intermediate batten 13. A thermal insulator 57A is interposed between the batten 44 and the mullion 20. This blocks heat transfer from the batten 44 to the mullion 20. This prevents the temperature of the battens 41, 42, 43, 44, which have been cooled by the cold air on the outdoor side Y1, from being transferred to the indoor side Y2, thereby improving insulation.

[0172] The first frame side locking portion 157 of the flange 41 is locked to the first frame side locking portion 157 of the lower transom 15. The second flange side locking portion 416 of the flange 41 is locked to the second frame side locking portion 159 of the lower transom 15. The first flange side locking portion 424 of the flange 42 is locked to the first frame side locking portion 117 of the upper transom 11. The second flange side locking portion 426 of the flange 42 is locked to the second frame side locking portion 119 of the upper transom 11. The first flange side locking portion 434 of the flange 43 is locked to the first frame side locking portion 137 of the intermediate transom 13. The second flange side locking portion 436 of the flange 43 is locked to the second frame side locking portion 139 of the intermediate transom 13. The first ridge-side engaging portion 444 of the ridge 44 is engaged with the first frame-side engaging portion 222 of the mullion 20. The second ridge-side engaging portion 446 of the ridge 44 is engaged with the second frame-side engaging portion 224 of the mullion 20. There is no need to complicate the processing of the lower transom 15, upper transom 11, intermediate transom 13 and the mullion 20 itself, allowing for a simple configuration.

[0173] Insulating material 51A is arranged continuously from the first ridge side engaging portion 414, where ridge 41 is engaged with the lower interlining 15, to the second ridge side engaging portion 416. Insulating material 53A is arranged continuously from the first ridge side engaging portion 424, where ridge 42 is engaged with the upper interlining 11, to the second ridge side engaging portion 426. Insulating material 57A is arranged continuously from the first ridge side engaging portion 444, where ridge 44 is engaged with the mullion 20, to the second ridge side engaging portion 446. Since insulating materials 51A, 53A, and 57A can be fixed to ridges 41, 42, and 44, respectively, at one time, fixing of insulating materials 51A, 53A, and 57A can be made even easier.

[0174] (Third embodiment) The curtain wall according to the third embodiment will be described mainly with reference to Figure 13. In the description of the embodiment below, the same components as those previously described will be given the same reference numerals, and their description will be omitted. In Figure 13, cross-sectional hatching of components such as the lower interlining 15 and batten 41 has been omitted to clearly show the sliding members 61 and 62. The range of the sliding members 61 and 62 is indicated by dashed lines.

[0175] 13, the portion of the heat insulating material 51B that comes into contact with the lower interlining 15 has a sliding member 61. The portion of the heat insulating material 52B that comes into contact with the lower interlining 15 has a sliding member 62.

[0176] The sliding properties of the sliding members 61 and 62 are higher than the sliding properties of the portions of the heat insulating members 51B and 52B that do not come into contact with the lower interlining 15. For example, the sliding members 61 and 62 are coated with fluororesin.

[0177] Although not shown in the figures, the other heat insulating materials 53, 54, 55, 56, 57, 58 also have sliding members 61 in the portions that come into contact with the upper interlining 11, the intermediate interlining 13, and the mullion 20.

[0178] In the curtain wall 100, heat insulating materials 51B, 52B are interposed between the batten 41 and the lower runner 15. This blocks heat transfer from the batten 41 to the lower runner 15. This prevents the temperature of the batten 41, cooled by the cold air on the outdoor side Y1, from being transferred to the indoor side Y2, thereby improving thermal insulation.

[0179] The first frame side locking portion 157 of the flange 41 is locked to the first frame side locking portion 157 of the lower transom 15. The second flange side locking portion 416 of the flange 41 is locked to the second frame side locking portion 159 of the lower transom 15. There is no need to make the processing of the lower transom 15 itself complicated, and a simple configuration can be achieved.

[0180] The provision of the sliding members 61 and 62 on the heat insulating members 51B and 52B allows the ledge 41 to be smoothly engaged with the lower interlining 15.

[0181] Since the sliding members 61 and 62 are coated with fluororesin, the sliding members 61 and 62 can be easily provided on the heat insulating members 51B and 52B.

[0182] While preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings, it goes without saying that the present disclosure is not limited to these examples. The shapes and combinations of the components shown in the above examples are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present disclosure.

[0183] In the embodiment described above, the vacuum insulation board 33 is installed, but this is not limiting. The vacuum insulation board 33 does not necessarily have to be installed.

[0184] In the embodiment described above, the decorative panel 34 is disposed on the outdoor side Y1 of the vacuum insulation board 33, but this is not limited to this. The decorative panel 34 does not have to be disposed on the outdoor side Y1 of the vacuum insulation board 33.

[0185] In the above embodiment, the core material 33a of the vacuum insulation board 33 is sealed in the bag 33b under a vacuum, but this is not limiting. The vacuum insulation board 33 may have a configuration in which the core material 33a is exposed without having the bag 33b.

[0186] The materials of the core material 33a and the bag body 33b of the vacuum insulation board 33 can be set appropriately. The thermal conductivity of the vacuum insulation board 33 is not limited to 0.0042 W / m·K and can be set appropriately. The thickness of the vacuum insulation board 33 is not limited to 5 mm to 50 mm and can be set appropriately.

[0187] In the embodiment described above, the insulating materials 51 and 52 are fixed to the batten 41 side, but this is not limited to this. The insulating materials 51 and 52 may also be fixed to the lower batten 15 side. The insulating materials 53 and 54 may also be fixed to the upper batten 11 side. The insulating materials 55 and 56 may also be fixed to the middle batten 13 side. The insulating materials 57 and 58 may also be fixed to the mullion 20 side.

[0188] In the embodiment described above, the lower interlining 15 has hollow portions S1 and S2, but this is not limited to this. The lower interlining 15 does not have to have hollow portions S1 and S2. The upper interlining 11 does not have to have hollow portions S11 and S12. The middle interlining 13 does not have to have hollow portion S21. The mullion 20 does not have to have hollow portions S31 and S32. [Explanation of symbols]

[0189] 11 Upper side lattice (frame material), 13 Middle lattice (frame material), 15 Lower side lattice (frame material), 20 Mullion (frame material), 31, 36 Glass panel (panel), 32 Fireproof board, 33 Vacuum insulation board, 33a Core material, 33b Bag body, 34 Decorative panel, 51, 51A, 51B, 52, 52B, 53, 52A, 54, 55, 55A, 56, 56A, 57, 57A, 58 Heat insulating material, 100 Curtain wall, 117 First frame side fastening portion, 119 Second frame side fastening portion, 137 First frame side fastening portion, 139 Second frame side fastening portion, 157 First frame side fastening portion, 159 Second frame side fastening portion, 222 First frame side fastening portion, 224 Second frame side fastening portion, 414 First ridge side engaging portion, 416 Second ridge side engaging portion, 424 First ridge side engaging portion, 426 Second ridge side engaging portion, 434 First ridge side engaging portion, 436 Second ridge side engaging portion, 444 First ridge side engaging portion, 446 Second ridge side engaging portion, Y1 outdoor side, Y2 indoor side

Claims

1. a frame member provided with a frame-side locking portion; a ledge having a ledge-side engaging portion that is engaged with the frame-side engaging portion; a panel groove formed by the frame material and the batten; a panel having an end portion disposed in the panel groove; A curtain wall comprising an insulating material arranged between the frame side engaging portion and the edge side engaging portion.

2. The curtain wall of claim 1 , wherein the insulation is secured to the batten.

3. The curtain wall according to claim 2, wherein the frame-side engaging portion and the edge-side engaging portion are each provided at two locations.

4. The curtain wall according to claim 3, wherein the insulating material is also fixed to the area between the two edge-side retaining portions.

5. A curtain wall as described in claim 1 or 2, wherein the portion of the insulating material that contacts the frame material has a sliding material that has a higher slipperiness than the portion of the insulating material that does not contact the frame material.

6. The curtain wall according to claim 5, wherein the sliding material is a fluororesin coating.

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