curtain wall

Abstract

To provide a curtain wall excellent in sound insulation, heat insulation and design. [Solution] The curtain wall 1 comprises a plurality of glass panels 110 arranged in a space partitioned by the gables 10 and the mullions 70, outdoor-side retaining members 13, 45, 73 that hold the glass panels 110, indoor-side retaining members 37, 63, 88 that are provided on the indoor side of the outdoor-side retaining members 13, 45, 73 at intervals from the outdoor-side retaining members 13, 45, 73 and hold the glass panels 110, and a shielding body 136. The glass panel 110 has a first glass panel 111 held by the outdoor-side retaining members 13, 45, 73 and a second glass panel 117 held by the indoor-side retaining members 37, 63, 88, and an insulating layer 132 is formed consisting of the space surrounded by the gables 10, the mullions 70, the first glass panel 111, and the second glass panel 117.

Description

[Technical Field]

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

[0002] Conventionally, there exists a curtain wall that is installed on the periphery of a building and includes mullions (vertical frames), mullions (horizontal frames), and glass panels installed in openings surrounded by the mullions and mullions. Some curtain walls separate the indoors and outdoors with multiple (usually two) glass panels arranged side by side with a specified gap between them (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-111833 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, the importance of sound insulation, heat insulation, and design as functions of curtain walls has been increasing. For example, redevelopment of areas around major train stations has been actively carried out in recent years. Because curtain walls can achieve a glass-based exterior, there are many cases where they are used in buildings constructed as part of redevelopment. Areas undergoing redevelopment are prone to noise generation. For this reason, buildings constructed as part of redevelopment are required to have particularly high levels of sound insulation. Buildings constructed as part of redevelopment are also required to have higher levels of insulation and aesthetics than ever before. The level of demand for these functions is increasing not only for buildings related to redevelopment, but for buildings in general.

[0005] However, in the curtain wall of Patent Document 1, slits are provided in the vertical frames surrounding the hollow layer, connecting the hollow layer to the space outside the hollow layer. This increases the ventilation efficiency of the hollow layer. In this case, there is a risk that outdoor sound may be transmitted indoors through the slits. Also, in winter, there is a risk that cold air from outdoors may enter the indoors through the slits, causing a cold inside. Furthermore, the slits may be visible through the glass panels, which may impair the design of the curtain wall. Therefore, the curtain wall of Patent Document 1 has room for improvement in terms of sound insulation, heat insulation, and design.

[0006] An object of the present disclosure is to provide a curtain wall that is excellent in sound insulation, heat insulation, and design. [Means for solving the problem]

[0007] The curtain wall of the present disclosure is a curtain wall installed on the periphery of a building, and comprises a lattice-shaped frame body having a plurality of mullions and a plurality of uprights, a plurality of glass panels arranged in a space partitioned by the mullions and the uprights, an outdoor-side retaining portion that holds the glass panels, an indoor-side retaining portion that is arranged indoors on the outdoor-side retaining portion at a distance from the outdoor-side retaining portion and holds the glass panels, and a shielding body, wherein the glass panels comprise an outdoor-side glass panel held by the outdoor-side retaining portion and an indoor-side glass panel held by the indoor-side retaining portion, and an insulating layer is formed consisting of the space surrounded by the mullions, the uprights, the outdoor-side glass panel, and the indoor-side glass panel. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a view of the curtain wall of the first embodiment as seen from the outdoor side. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 2 is a cross-sectional view taken along the line III-III in FIG. [Figure 4]FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Figure 5] FIG. 10 is a view of a curtain wall according to a second embodiment, corresponding to FIG. 2. [Figure 6] FIG. 4 is a view of a curtain wall according to a second embodiment, corresponding to FIG. 3. [Figure 7] FIG. 10 is a view of a curtain wall according to a third embodiment, corresponding to FIG. 2. [Figure 8] FIG. 10 is a view of a curtain wall according to a third embodiment, corresponding to FIG. 3. DETAILED DESCRIPTION OF THE INVENTION

[0009] First Embodiment A first embodiment of the present disclosure will be described below with reference to FIGS. 1 to 4. As shown in FIG. 1, a curtain wall 1 is provided on the periphery of a building 150. The building 150 is, for example, a medium- to high-rise building such as a building. As shown in FIG. 2, the building 150 includes a ceiling portion 151 and a floor portion 155. The floor portion 155 includes a floor surface material 156 and floor beams 157. The ceiling portion 151 includes a ceiling surface material 152 and ceiling beams 153. In the building 150, the portion between the ceiling portion 151 and the floor portion 155 constitutes a floor portion 150a of the building 150, and the portion between the ceiling portion 151 of a lower floor and the floor portion 155 of an upper floor constitutes an inter-floor portion 150b, which is a boundary portion between the upper and lower floors.

[0010] In this specification, the "visible direction" refers to the indoor / outdoor direction of the curtain wall 1 installed in the building 150. The "visible direction" refers to the longitudinal direction of the transom 10 and the mullion 70 (described later) (i.e., the in-plane direction of the glass panel 110 (described later)). The visible direction is also the direction in which a plane perpendicular to the indoor / outdoor direction extends. The "left-right direction" refers to the left-right direction of the visible direction when the curtain wall 1 installed in the building 150 is viewed from the outdoor side.

[0011] The curtain wall 1 is a curtain wall with a so-called double-skin structure. The portion of the curtain wall 1 that overlaps with the floor section 150a when viewed from the front is sometimes referred to as the "vision section 1a." The portion of the curtain wall 1 that overlaps with the inter-floor section 150b when viewed from the front is sometimes referred to as the "spandrel section 1b." The curtain wall 1 comprises a frame 2, a plurality of glass panels 110, a plurality of fire-resistant boards 127, and a plurality of shielding bodies 136.

[0012] (Frame) The frame body 2 is fixed to the ceiling 151 and floor 155 of the building 150. The frame body 2 has a lattice shape. The frame body 2 has a plurality of lattices 10 and a plurality of mullions 70.

[0013] (No eyes) The transom 10 is elongated with its longitudinal direction in the horizontal direction. The multiple transoms 10 are arranged at intervals in the vertical direction. The transom 10 has a first transom 11 fixed to the floor 155 and a second transom 41 fixed to the ceiling 151. The first transom 11 and the second transom 41 are arranged alternately at intervals in the vertical direction.

[0014] (No. 1 No-Eye) The first crosspiece 11 is provided on the outdoor side of the floor portion 155. The first crosspiece 11 has a first upper crosspiece 12, a first lower crosspiece 25, and a lower frame portion .

[0015] The first upper transom part 12 has an outdoor holding portion 13, a hollow portion 14, a projection wall portion 15, a holder portion 16, an upper connection portion 17, a hollow portion 18, and a door stop portion 22.

[0016] The outdoor-side retaining portion 13 is provided at the outdoor-side end of the first upper interlining 12. The outdoor-side retaining portion 13 is groove-shaped and opens upward, extending in the left-right direction. A watertight material 13a is provided at the outdoor-side end of the underside of the outdoor-side retaining portion 13. The watertight material 13a is a splash barrier. The watertight material 13a is, for example, fin-shaped and extends in the vertical direction. The watertight material 13a is formed, for example, from ethylene propylene diene rubber.

[0017] The hollow portion 14 is adjacent to the indoor side of the outdoor-side holding portion 13. The hollow portion 14 has a generally rectangular tubular shape that extends in the left-right direction.

[0018] The visible wall portion 15 is provided on the indoor side of the hollow portion 14. The visible wall portion 15 extends to the outdoor side from the vertical middle portion of the hollow portion 14. The visible wall portion 15 has a generally flat plate shape with a plate surface extending horizontally.

[0019] The upper connection portion 17 is provided below the projected wall portion 15. The upper connection portion 17 protrudes downward from the lower surface of the projected wall portion 15. The upper connection portion 17 has the shape of a long rectangular tube with its longitudinal direction extending in the left-right direction.

[0020] The hollow portion 18 is adjacent to the outdoor side of the visible wall portion 15. The outdoor side and lower end of the holder portion 16 is connected to the indoor side end of the visible wall portion 15. The hollow portion 18 has a long rectangular tubular shape with the left-right direction as the longitudinal direction.

[0021] A frame 33 is provided on the indoor side of the hollow portion 18. The frame 33 is fixed to the indoor side of the hollow portion 18, more specifically, by screws. The frame 33 extends from the hollow portion 18 to the indoor side, then further downward, and then further to the outdoor side. The indoor side of the frame 33 abuts or is close to the indoor end of the floor surface material 156. The underside of the lower end of the frame 33 abuts against the upper surface of the floor beam 157. The lower end of the frame 33 is fixed to the floor beam 157, for example, more specifically, by screws. The first upper interlocking member 12 is fixed to the floor beam 157 via the frame 33.

[0022] The holder portion 16 is a portion where the desiccant 137, which will be described later, is attached. The holder portion 16 is provided in a space surrounded by the hollow portion 14, the projecting wall portion 15, and the hollow portion 18. The holder portion 16 has an internal space in which the desiccant 137, which will be described later, can be placed. The shape of the internal space of the holder portion 16 when viewed from the left to right is, for example, approximately rectangular. The upper surface of the holder portion 16 is provided with a plurality of through-holes 16a that connect the internal space of the holder portion 16 with the space above the first interlining 11.

[0023] The doorstop portion 22 is adjacent to the upper side of the hollow portion 18. The doorstop portion 22 has a long rectangular tubular shape with the longitudinal direction in the left-right direction. An airtight material 22a is provided on the indoor side of the doorstop portion 22. For example, two airtight materials 22a are provided at a distance in the vertical direction. The airtight materials 22a are formed, for example, from resin.

[0024] The first lower flap portion 25 is provided below the first upper flap portion 12. The first lower flap portion 25 has an outdoor-side retaining portion 26, a hollow portion 27, a hollow portion 28, a lower connecting portion 31, and an indoor-side retaining portion 32.

[0025] The outdoor-side retaining portion 26 is provided at the outdoor-side end of the first lower transom section 25. The outdoor-side retaining portion 26 is groove-shaped and opens downward, extending in the left-right direction. The outdoor-side retaining portion 26 is aligned vertically with the outdoor-side retaining portion 13 of the first upper transom section 12 at a distance. The upper surface of the outdoor-side retaining portion 26 abuts against the watertight material 13a. This improves the watertightness between the outdoor-side retaining portion 13 and the outdoor-side retaining portion 26.

[0026] The hollow portion 27 is provided adjacent to the indoor side of the outdoor-side holding portion 26. The hollow portion 27 has a generally elongated rectangular tubular shape with the left-right direction as the longitudinal direction.

[0027] The hollow portion 28 is provided adjacent to the indoor side of the hollow portion 27. The hollow portion 28 has a generally long rectangular tubular shape with the longitudinal direction extending in the left-right direction. The outer shape of the hollow portion 28 viewed in the left-right direction is generally rectangular with the longitudinal direction extending in the viewing direction. The indoor-side lower end of the hollow portion 28 is recessed toward the outdoor side and upward.

[0028] The lower connection portion 31 is adjacent to the upper side of the hollow portion 28. The lower connection portion 31 is groove-shaped and opens upward, extending in the left-right direction. The upper connection portion 17 is inserted into the space surrounded by the lower connection portion 31.

[0029] A watertight material 31a is provided on the outdoor-side upper end of the inner circumferential surface of the groove of the lower connecting portion 31. The watertight material 31a is a rain barrier. The watertight material 31a is made of an elastically deformable material, such as rubber. The watertight material 31a abuts against the upper connecting portion 17. This improves the watertightness between the first open upper portion 12 and the first open lower portion 25.

[0030] An airtight material 31b is provided on the indoor side and upper end of the inner circumferential surface of the groove of the lower connection portion 31. The airtight material 31b is a wind barrier. The airtight material 31b is made of an elastically deformable material, such as rubber. The airtight material 31b abuts against the upper connection portion 17. This improves the airtightness between the first upper open section 12 and the first lower open section 25.

[0031] The indoor side holding portion 32 is provided at the indoor side and lower end of the hollow portion 28. The indoor side holding portion 32 is groove-shaped and opens downward and extends in the left-right direction.

[0032] The lower frame portion 35 is provided on the indoor side of the first upper interlocking member 12. The lower frame portion 35 is provided on the upper side of the frame 33. The lower frame portion 35 has a hollow portion 36 and an indoor side retaining portion 37.

[0033] The hollow portion 36 is provided on the indoor side below the hollow portion 18 of the first upper transom 12. The hollow portion 36 faces the hollow portion 18 in the front direction. The hollow portion 36 has a generally elongated rectangular cylindrical shape with the longitudinal direction extending in the left-right direction.

[0034] The indoor side holding portion 37 is provided on the indoor side of the outdoor side holding portion 26 at a distance from the outdoor side holding portion 26. The indoor side holding portion 37 is adjacent to the upper side of the hollow portion 36. The indoor side holding portion 37 is provided on the indoor side above the hollow portion 36. The indoor side holding portion 37 is groove-shaped and opens upward and extends in the left-right direction.

[0035] The lower frame portion 35 abuts against the airtight material 22a provided in the doorstop portion 22. The hollow portion 36 abuts against one side of the airtight material 22a, and the indoor retaining portion 37 abuts against the other side of the airtight material 22a. This improves the airtightness between the lower frame portion 35 and the first upper interlocking member 12.

[0036] (2nd No-Eyes) The second transom 41 is provided on the outdoor side of the ceiling portion 151. The second transom 41 has a second transom main body portion 42 and an upper frame portion 61.

[0037] The second transom main body 42 has an outdoor side holding portion 43, an outdoor side holding portion 45, a hollow portion 46, a condensation drain valve 47, a visible wall portion 49, a visible wall portion 51, a condensation receiver 52, an indoor side holding portion 53, a hollow portion 55, a shielding body mounting portion 56, and a door stop portion 57.

[0038] The outdoor-side holding portion 43 is provided at the outdoor-side end of the second transom main body portion 42. The outdoor-side holding portion 43 is groove-shaped and opens upward and extends in the left-right direction.

[0039] The outdoor-side holding part 45 is provided at the outdoor-side end of the second transom main body part 42. The outdoor-side holding part 45 is provided below the outdoor-side holding part 43. The outdoor-side holding part 45 is adjacent to the outdoor-side holding part 43. The outdoor-side holding part 43 is groove-shaped and opens downward and extends in the left-right direction.

[0040] The hollow portion 46 is provided on the indoor side of the outdoor holding portion 43 and the outdoor holding portion 45. The hollow portion 46 is adjacent to the outdoor holding portion 43 and the outdoor holding portion 45. The hollow portion 46 has a substantially elongated rectangular tubular shape with the left-right direction as the longitudinal direction.

[0041] The condensation drain valve 47 is a member for draining condensation water. The condensation drain valve 47 is provided at the top of the hollow portion 46. The condensation drain valve 47 drains condensation water accumulated on the top surface of the second transom 41 to the outdoors.

[0042] The visible wall portion 49 extends upward from the outdoor and upper ends of the hollow portion 46. The visible wall portion 49 has a generally rectangular plate shape with the plate surface extending in the visible direction. The visible wall portion 49 has an elongated shape with the left-right direction as the longitudinal direction.

[0043] The visible wall portion 51 extends from the upper end of the visible wall portion 49 toward the indoor side. The visible wall portion 51 is a generally rectangular plate whose surface extends in the visible direction. The visible wall portion 51 is elongated with its longitudinal direction extending in the left-right direction. The portion of the upper surface of the second transom 41, from the upper surface of the hollow portion 46 to the upper surface of the visible wall portion 51, is stepped.

[0044] The condensation tray 52 is provided above the projected wall portion 51. The condensation tray 52 covers the projected wall portion 51 from above and extends up to the upper side of the hollow portion 46. The condensation tray 52 is attached to the upper surface of the projected wall portion 51. The condensation tray 52 is a long, flat plate whose surface extends in the projected direction and whose longitudinal direction is the left-right direction. The upper surface of the condensation tray 52 slopes downward from the indoor side to the outdoor side. Therefore, condensation water received by the condensation tray 52 flows down the condensation tray 52 to the outdoor side and down to the upper surface of the hollow portion 46. The condensation water flows into the condensation drain valve 47 and is discharged to the outdoor side. Therefore, the condensation tray 52 can prevent condensation water from accumulating on the upper surface of the projected wall portion 51.

[0045] The indoor side retaining portion 53 is provided in the middle in the projection direction of the upper surface of the projection wall portion 51, more specifically, at a position slightly spaced from the indoor side end toward the outdoor side. The indoor side retaining portion 53 is groove-shaped and opens upward, extending in the left-right direction.

[0046] The hollow portion 55 is provided on the indoor side of the visible wall portion 51. The outdoor-side and upper end of the hollow portion 55 is adjacent to the indoor-side end of the visible wall portion 51. The hollow portion 55 has a generally elongated rectangular tubular shape with the left-right direction as the longitudinal direction.

[0047] A frame 59 is provided on the indoor side of the hollow portion 55. The frame 59 extends from the indoor side and lower end of the hollow portion 55 to the indoor side. The frame 59 is connected to the hollow portion 55, more specifically, engaged with it. The indoor side end of the frame 59 rises upward. The shape of the frame 59 when viewed in the left-right direction is approximately L-shaped. The frame 59 is elongated with the left-right direction as the longitudinal direction. The rising portion of the indoor side end of the frame 59 abuts or is close to the ceiling surface material 152.

[0048] The shielding body mounting portion 56 is a portion where a shielding body 136 that limits solar radiation is mounted. The shielding body mounting portion 56 is formed by being surrounded by the indoor side surface of the hollow portion 55, the indoor side surface of the visible wall portion 49, the lower surface of the visible wall portion 51, and the outdoor side surface of the hollow portion 55. When viewed from the left to right, the shape of the shielding body mounting portion 56 is approximately U-shaped and opens downward. The shielding body mounting portion 56 is groove-shaped and opens downward and extends in the left to right direction.

[0049] The doorstop portion 57 is provided below the hollow portion 55. The doorstop portion 57 is adjacent to the hollow portion 55. The doorstop portion 57 has a generally long rectangular cylindrical shape with the longitudinal direction in the left-right direction. An airtight material 57a is provided on the indoor side of the doorstop portion 57. For example, two airtight materials 57a are provided. One of the airtight materials 57a is provided at the top of the hollow portion 55, and the other airtight material 57a is provided at the bottom of the hollow portion 55.

[0050] The upper frame portion 61 is provided on the indoor side of the hollow portion 55 of the second transom main body portion 42. The upper frame portion 61 is provided on the underside of the frame 59. The upper frame portion 61 abuts against the airtight material 57a provided in the hollow portion 55. This improves the airtightness between the second transom main body portion 42 and the upper frame portion 61. The upper frame portion 61 has a hollow portion 62 and an indoor side retaining portion 63.

[0051] The hollow portion 62 is provided at the top of the upper frame portion 61. The hollow portion 62 faces the indoor side of the upper part of the doorstop portion 57 of the second transom main body portion 42. The hollow portion 62 abuts against the airtight material 57a. The hollow portion 62 faces the underside of the frame 59. The hollow portion 62 is in the shape of a substantially elongated rectangular tube with its longitudinal direction extending in the left-right direction.

[0052] The indoor side retaining portion 63 is provided below the hollow portion 62. The indoor side retaining portion 63 is adjacent to the hollow portion 62. The indoor side retaining portion 63 faces the indoor side of the lower part of the door stop portion 57. The indoor side retaining portion 63 abuts against the airtight material 63 a. The indoor side retaining portion 63 is groove-shaped and opens upward and extends in the left-right direction.

[0053] (Mullet) The mullions 70 are elongated with the vertical direction as the longitudinal direction. Multiple mullions 70 are arranged at intervals in the horizontal direction. The mullions 70 include a first mullion 71 provided in the vision section 1a and a second mullion 95 provided in the spandrel section 1b. The first mullions 71 and the second mullions 95 are arranged alternately in the vertical direction.

[0054] (1st mullion) The first mullion 71 has a first mullion main body portion 72, a partition portion 81, a door stop portion 85A, a door stop portion 85B, a first vertical frame portion 87A, and a second vertical frame portion 87B.

[0055] The first vertical main body 72 has an outdoor retaining portion 73A, a left-side projecting wall portion 74A, a left-side facing wall portion 75A, a left-side facing wall portion 76A, a left-side facing wall portion 77A, an outdoor retaining portion 73B, a right-side projecting wall portion 74B, a right-side facing wall portion 75B, a right-side facing wall portion 76B, a right-side facing wall portion 77B, a hollow portion 83, a doorstop portion 85A, and a doorstop portion 85B.

[0056] The outdoor-side holding portion 73A is provided at the outdoor-side end of the first mullion body portion 72. The outdoor-side holding portion 73A is groove-shaped and opens to the left side and extends in the vertical direction.

[0057] The left-side projected wall portion 74A is provided on the indoor side of the outdoor-side holding portion 73A. The left-side projected wall portion 74A extends indoors from the indoor-side, left-side end of the outdoor-side holding portion 73A. The left-side projected wall portion 74A is a generally flat plate whose surface extends in the projected direction. The left-side projected wall portion 74A is elongated, with the vertical direction as its longitudinal direction.

[0058] The left-side observation wall portion 75A is provided on the indoor side of the outdoor-side holding portion 73A. The left-side observation wall portion 75A is provided at a distance from the outdoor-side holding portion 73A in the projection direction. The left-side observation wall portion 75A extends to the right from the middle of the projection direction of the right side surface of the left-side projection wall portion 74A. The left-side observation wall portion 75A is elongated with its longitudinal direction extending vertically.

[0059] The left side observation wall portion 76A is provided on the indoor side of the left side observation wall portion 76A. The left side observation wall portion 76A is provided at a distance from the left side observation wall portion 75A in the front-to-back direction. The left side observation wall portion 76A extends to the right from the middle of the right side surface of the left side observation wall portion 74A in the front-to-back direction. The left side observation wall portion 76A is elongated with the vertical direction as the longitudinal direction.

[0060] The left side observation wall portion 77A is provided on the indoor side of the left side observation wall portion 77A. The left side observation wall portion 77A is aligned with the left side observation wall portion 76A at a distance in the projection direction. The left side observation wall portion 77A extends to the right from the indoor side end of the left side observation wall portion 74A. The left side observation wall portion 77A is elongated with the vertical direction as the longitudinal direction.

[0061] The outdoor-side holding portion 73B is provided at the outdoor end of the first mullion body portion 72. The outdoor-side holding portion 73B is provided to the right of the outdoor-side holding portion 73A. The outdoor-side holding portion 73B is aligned with the outdoor-side holding portion 73A at a distance in the left-right direction. The outdoor-side holding portion 73B is groove-shaped, opening to the right and extending in the vertical direction.

[0062] The right-side projected wall portion 74B is provided on the indoor side of the outdoor-side holding portion 73B. The right-side projected wall portion 74B extends from the indoor-side, right-side end of the outdoor-side holding portion 73B to the indoor side. The right-side projected wall portion 74B is a substantially flat plate whose plate surface extends in the projected direction. The right-side projected wall portion 74B is elongated, with the vertical direction as the longitudinal direction.

[0063] The right-side observation wall portion 75B is provided on the indoor side of the outdoor-side holding portion 73B. The right-side observation wall portion 75B is aligned with the outdoor-side holding portion 73B at a distance in the projection direction. The right-side observation wall portion 75B extends leftward from the middle of the left side surface of the right-side observation wall portion 74B in the projection direction, then extends slightly toward the indoor side, and then extends further leftward. The right-side observation wall portion 75B is elongated with its longitudinal direction extending vertically. The left end portion of the right-side observation wall portion 75B is aligned with the right end portion of the left-side observation wall portion 75A in the projection direction.

[0064] A watertight material 75Ba is provided on the outdoor side and left end of the right-side facing wall portion 75B. The watertight material 75Ba is a rain barrier. The watertight material 75Ba abuts against the left-side facing wall portion 75A. The watertight material 75Ba is made of, for example, ethylene propylene diene rubber. This improves the watertightness of the first mullion 71.

[0065] The space surrounded by outdoor retaining portion 73A, left-side projecting wall portion 74A, left-side visible wall portion 75A, right-side visible wall portion 75B, right-side projecting wall portion 74B, and outdoor retaining portion 73B forms hollow portion 78. Hollow portion 104 communicates with the space on the outdoor side of curtain wall 1 through the gap between outdoor retaining portion 73A and outdoor retaining portion 73B.

[0066] The right-side observation wall portion 76B is provided on the indoor side of the right-side observation wall portion 75B. The right-side observation wall portion 76B is provided at a distance from the right-side observation wall portion 75B in the projection direction. The right-side observation wall portion 76B extends to the left from the middle of the left side of the right-side observation wall portion 74B in the projection direction, then extends slightly toward the outdoors, and then extends further to the left. The right-side observation wall portion 76B is elongated with its longitudinal direction extending vertically. The left end of the right-side observation wall portion 76B is aligned in the projection direction with the right end of the left-side observation wall portion 76A.

[0067] An airtight material 76Ba is provided on the indoor side and left end of the right-side facing wall portion 76B. The airtight material 76Ba is a wind barrier. The airtight material 76Ba abuts against the left-side facing wall portion 76A. The airtight material 76Ba is made of an elastically deformable material, such as ethylene propylene diene rubber. This enhances the airtightness of the first mullion 71.

[0068] The space surrounded by the left side visible wall portion 75A, the left side visible wall portion 74A, the left side visible wall portion 76A, the right side visible wall portion 76B, the right side visible wall portion 74B, and the right side visible wall portion 75B forms a hollow portion 79.

[0069] The right-side observation wall portion 77B is provided on the indoor side of the right-side observation wall portion 76B. The right-side observation wall portion 77B is provided at a distance from the right-side observation wall portion 77B in the front-view direction. The right-side observation wall portion 77B extends to the left from the indoor-side end of the right-side observation wall portion 74B, then extends slightly to the outdoor side, and then extends further to the left. The right-side observation wall portion 77B is elongated with its longitudinal direction extending vertically. The left end of the right-side observation wall portion 77B is aligned with the right end of the left-side observation wall portion 77A in the front-view direction. The left end of the right-side observation wall portion 77B abuts or is close to the right end of the left-side observation wall portion 77A.

[0070] The space surrounded by the left side visible wall portion 76A, the left side visible wall portion 74A, the left side visible wall portion 77A, the right side visible wall portion 78B, the right side visible wall portion 74B, and the right side visible wall portion 76B forms a hollow portion 80.

[0071] The partition section 81 is provided on the indoor side of the first mullion body section 72. The partition section 81 has a left-side projecting wall section 82A, a right-side projecting wall section 82B, a hollow section 83, a left-side visible wall section 84A, and a right-side visible wall section 84B.

[0072] The left-side projected wall 82A is provided in the portion of the partition 81 closer to the exterior. The left-side projected wall 82A is adjacent to the right end of the left-side visible wall 77A of the first mullion main body 72. The left-side projected wall 82A is generally flat with its plate surface extending in the projected direction. The left-side projected wall 82A is elongated with its longitudinal direction extending in the up-down direction. The left-side projected wall 82A is fixed to the left-side visible wall 77A, for example, via an L-shaped fixing member 82Aa. The fixing member 82Aa is formed, for example, from metal. The fixing member 82Aa is fixed to the left-side visible wall 77A, for example, by screws.

[0073] The right-side projected wall portion 82B is provided in the portion of the partition portion 81 closer to the exterior. The right-side projected wall portion 82B is aligned with the left-side projected wall portion 82A at a distance in the left-right direction. The right-side projected wall portion 82B abuts or is adjacent to the left end of the right-side projected wall portion 77B of the first mullion main body portion 72. The right-side projected wall portion 82B is generally flat with its plate surface extending in the projected direction. The right-side projected wall portion 82B is elongated with its longitudinal direction extending in the up-down direction.

[0074] The hollow portion 83 is provided on the indoor side of the left-side projected wall portion 82A and the right-side projected wall portion 82B. The hollow portion 83 is adjacent to the indoor end of the left-side projected wall portion 82A. The hollow portion 83 is adjacent to the indoor end of the right-side projected wall portion 82B. The hollow portion 83 has a substantially elongated rectangular tubular shape with the left-right direction as the longitudinal direction. The left-right dimension of the hollow portion 83 is smaller than the left-right dimension of the first mullion main body portion 72.

[0075] The left side observation wall 84A is provided on the left side of the hollow section 83. The left side observation wall 84A extends to the left from the indoor end of the left side of the hollow section 83. The left side observation wall 84A is a generally flat plate whose surface extends in the observation direction. The left side observation wall 84A is elongated, with the vertical direction as the longitudinal direction.

[0076] The right-side facing wall 84B is provided on the right side of the hollow portion 83. The right-side facing wall 84B extends to the right from the indoor-side end of the right side of the hollow portion 83. The right-side facing wall 84B is a generally flat plate whose surface extends in the facing direction. The right-side facing wall 84B is elongated, with the vertical direction as its longitudinal direction.

[0077] The doorstop portion 85A is provided on the left side of the first mullion body portion 72. The doorstop portion 85A is adjacent to the indoor end of the left side of the first mullion body portion 72. The doorstop portion 85A is fixed to the first mullion body portion 72, for example, by screws. The doorstop portion 85A has a substantially elongated rectangular cylindrical shape with the vertical direction as the longitudinal direction. An airtight material 85Aa is provided on the indoor side of the doorstop portion 85A. For example, two airtight materials 85Aa are provided. One of the airtight materials 85Aa is provided at the left end of the doorstop portion 85A, and the other airtight material 85Aa is provided in the middle of the doorstop portion 85A in the left-right direction.

[0078] The doorstop portion 85B is provided on the right side of the first mullion body portion 72. The doorstop portion 85B is adjacent to the indoor end of the right side of the first mullion body portion 72. The doorstop portion 85B is fixed to the first mullion body portion 72, for example, by screwing. The doorstop portion 85B has a substantially elongated rectangular cylindrical shape with the vertical direction as the longitudinal direction. An airtight material 85Ba is provided on the indoor side of the doorstop portion 85B. For example, two airtight materials 85Ba are provided. One of the airtight materials 85Ba is provided at the right end of the doorstop portion 85B, and the other airtight material 85Ba is provided in the middle of the doorstop portion 85B in the left-right direction.

[0079] The first vertical stile portion 87A is provided on the left side of the partition portion 81. The first vertical stile portion 87A is provided on the indoor side of the doorstop portion 85A. The first vertical stile portion 87A abuts against an airtight material 85Aa provided on the doorstop portion 85A. This improves the airtightness between the first vertical stile portion 87A and the doorstop portion 85A. The first vertical stile portion 87A has an indoor side retaining portion 88A, a hollow portion 89A, and a visible wall portion 91A.

[0080] The indoor side retaining portion 88A is provided on the indoor side of the outdoor side retaining portion 73A at a distance from the outdoor side retaining portion 73A. The indoor side retaining portion 88A is provided at the indoor side end of the first mullion 71. The indoor side retaining portion 88A is provided on the left side of the first vertical frame portion 87A. The indoor side retaining portion 88A is groove-shaped, opening to the left and extending vertically.

[0081] The hollow portion 89A is provided on the right side of the indoor side holding portion 88A. The hollow portion 89A is adjacent to the indoor side holding portion 88A. The hollow portion 89A has a generally elongated rectangular tubular shape with the longitudinal direction extending in the left-right direction.

[0082] The facing wall 91A is provided on the right side of the hollow portion 89A. The facing wall 91A extends to the right from the right end of the hollow portion 89A on the indoor side. The facing wall 91A is generally flat, with the plate surface extending in the facing direction. The facing wall 91A is elongated, with the vertical direction as the longitudinal direction. An airtight material 91Aa is provided at the right end of the outdoor side of the facing wall 91A. The airtight material 91Aa is fin-shaped and extends in the left-right direction. The airtight material 91Aa is made of, for example, ethylene propylene diene rubber. The airtight material 91Aa abuts against the left end of the outdoor side of the left facing wall 84A of the partition portion 81. This improves the airtightness between the first vertical frame portion 87A and the first mullion main body portion 72.

[0083] A handle portion 92 can be attached to the indoor side of the first vertical frame portion 87A. The handle portion 92 can be attached to the hollow portion 89A. The handle portion 92 is detachable.

[0084] The second vertical stile portion 87B is provided on the right side of the partition portion 81. The second vertical stile portion 87B is provided on the indoor side of the doorstop portion 85B. The second vertical stile portion 87B abuts against an airtight material 85Bb provided on the doorstop portion 85B. This improves the airtightness between the second vertical stile portion 87B and the doorstop portion 85B. The second vertical stile portion 87B has an indoor side retaining portion 88B, a hollow portion 89B, a visible wall portion 91B, and a pivot shaft portion 93.

[0085] The indoor side retaining portion 88B is provided on the indoor side of the outdoor side retaining portion 73B at a distance from the outdoor side retaining portion 73B. The indoor side retaining portion 88B is provided at the indoor side end of the first mullion 71. The outdoor side retaining portion 73B is provided on the right side of the second vertical frame portion 87B. The indoor side retaining portion 88B is groove-shaped, opening to the right and extending vertically.

[0086] The hollow portion 89B is provided on the left side of the indoor side holding portion 88B. The hollow portion 89B is adjacent to the indoor side holding portion 88B. The hollow portion 89B has a generally elongated rectangular tubular shape with the longitudinal direction extending in the left-right direction.

[0087] The visible wall portion 91B is provided on the left side of the hollow portion 89B. The visible wall portion 91B extends leftward from the right end of the hollow portion 89B on the indoor side. The visible wall portion 91B is generally flat, with the plate surface extending in the visible direction. The visible wall portion 91B is elongated, with the vertical direction as the longitudinal direction. An airtight material 91Ba is provided at the right end of the outdoor side of the visible wall portion 91B. The airtight material 91Ba is fin-shaped, extending in the left-right direction. The airtight material 91Ba abuts against the right end of the outdoor side of the visible wall portion 91B of the partition portion 81. The airtight material 91Ba is made of, for example, ethylene propylene diene rubber. This improves the airtightness between the second vertical frame portion 87B and the first mullion main body portion 72.

[0088] The pivot shaft 93 is provided on the left side of the hollow portion 89B. The pivot shaft 93 is provided on the outdoor side of the visible wall portion 91B. The pivot shaft 93 is provided on the portion of the second vertical frame portion 87B closer to the indoor side. The pivot shaft 93 is a long, approximately cylindrical shape with its longitudinal direction extending vertically. The second vertical frame portion 87B can pivot around the pivot shaft 93 as its central axis.

[0089] (Second mullion) The second mullion 95 has a second mullion main body portion 96, an indoor side holding portion 108A, and an indoor side holding portion 108B.

[0090] The second mullion body 96 is fixed to the floor beam 157 via fasteners B1 and brackets B2. The second mullion body 96 has an outdoor-side retaining portion 97A, a left-side projecting wall portion 98A, a left-side facing wall portion 99A, a left-side facing wall portion 101A, a left-side facing wall portion 102A, an outdoor-side retaining portion 97B, a right-side facing wall portion 98B, a right-side facing wall portion 99B, a right-side facing wall portion 101B, and a right-side facing wall portion 102B. The second mullion body 96 has a configuration that generally corresponds to, for example, the first mullion body 72. The first mullion body 72 and the second mullion body 96 are, for example, integral.

[0091] The outdoor-side holding portion 97A is provided at the outdoor-side end of the second mullion 95. The outdoor-side holding portion 97A is groove-shaped and opens to the left side and extends in the vertical direction.

[0092] The left-side projected wall portion 98A is provided on the indoor side of the outdoor-side holding portion 97A. The left-side projected wall portion 98A extends indoors from the indoor-side, left-side end of the outdoor-side holding portion 97A. The left-side projected wall portion 98A is a generally flat plate whose surface extends in the projected direction. The left-side projected wall portion 98A is elongated, with the vertical direction as its longitudinal direction.

[0093] The left-side observation wall portion 99A is provided on the indoor side of the outdoor-side holding portion 97A. The left-side observation wall portion 99A is provided at a distance from the outdoor-side holding portion 97A in the projection direction. The left-side observation wall portion 99A extends to the right from the middle of the projection direction of the right side surface of the left-side projection wall portion 98A. The left-side observation wall portion 99A is elongated, with the vertical direction as the longitudinal direction.

[0094] The left side observation wall 101A is provided on the indoor side of the left side observation wall 99A. The left side observation wall 101A is provided at a distance from the left side observation wall 99A in the front direction. The left side observation wall 101A extends to the right from the middle of the front direction of the right side of the left side observation wall 98A. The left side observation wall 101A is elongated with its longitudinal direction extending vertically.

[0095] The left observation wall 102A is provided on the indoor side of the left observation wall 101A. The left observation wall 102A is aligned with the left observation wall 101A at a distance in the projection direction. The left observation wall 102A extends to the right from the indoor end of the right side of the left observation wall 98A. The left observation wall 102A is elongated, with the vertical direction as the longitudinal direction.

[0096] The outdoor-side holding portion 97B is provided at the outdoor end of the first mullion body portion 72. The outdoor-side holding portion 97B is provided to the right of the outdoor-side holding portion 97A. The outdoor-side holding portion 97B is aligned with the outdoor-side holding portion 97A at a distance in the left-right direction. The outdoor-side holding portion 97B is groove-shaped and opens to the right and extends vertically.

[0097] The right-side projected wall portion 98B is provided on the indoor side of the outdoor-side holding portion 97B. The right-side projected wall portion 98B extends from the indoor-side, right-side end of the outdoor-side holding portion 97B to the indoor side. The right-side projected wall portion 98B is a substantially flat plate whose plate surface extends in the projected direction. The right-side projected wall portion 98B is elongated, with the vertical direction as the longitudinal direction.

[0098] The right-side observation wall portion 99B is provided on the indoor side of the outdoor-side holding portion 97B. The right-side observation wall portion 99B is aligned with the outdoor-side holding portion 97B at a distance in the projection direction. The right-side observation wall portion 99B extends to the left from the middle of the projection direction of the left side surface of the right-side observation wall portion 98B, then extends slightly toward the indoor side, and then extends further to the left. The left-side observation wall portion 99A is elongated with its longitudinal direction extending vertically. The left end portion of the right-side observation wall portion 99B is aligned with the right end portion of the left-side observation wall portion 99A in the projection direction.

[0099] A watertight material 99Bb is provided on the outdoor side and left end of the right-side facing wall portion 99B. The watertight material 99Bb is a rain barrier. The watertight material 99Bb abuts against the left-side facing wall portion 99A. The watertight material 99Bb is made of an elastically deformable material, such as ethylene propylene diene rubber.

[0100] The space surrounded by the outdoor retaining portion 97B, the left-side projected wall portion 98A, the left-side visible wall portion 99A, the right-side visible wall portion 99B, the right-side projected wall portion 98B, and the outdoor retaining portion 97B forms a hollow portion 105. The hollow portion 105 communicates with the space on the outdoor side of the curtain wall 1 through the gap between the outdoor retaining portion 97A and the outdoor retaining portion 97B.

[0101] The right-side observation wall portion 101B is provided on the indoor side of the right-side observation wall portion 99B. The right-side observation wall portion 101B is provided at a distance from the right-side observation wall portion 99B in the front-view direction. The right-side observation wall portion 101B extends to the left from the middle of the left side of the right-side observation wall portion 98B in the front-view direction, then extends slightly toward the outdoors, and then extends further to the left. The right-side observation wall portion 101B is elongated with its longitudinal direction extending vertically. The left end of the right-side observation wall portion 101B is aligned with the right end of the left-side observation wall portion 101A in the front-view direction.

[0102] An airtight material 101Ba is provided on the indoor side and left end of the right-side facing wall 101B. The airtight material 101Ba is a wind barrier. The airtight material 101Ba abuts against the left-side facing wall 101A. The airtight material 101Ba is made of an elastically deformable material, such as ethylene propylene diene rubber.

[0103] The space surrounded by the left side visible wall portion 99A, the left side visible wall portion 98A, the left side visible wall portion 101A, the right side visible wall portion 101B, the right side visible wall portion 98B, and the right side visible wall portion 99B forms a hollow portion 105.

[0104] The right-side observation wall portion 102B is provided on the indoor side of the right-side observation wall portion 101B. The right-side observation wall portion 102B is provided at a distance from the right-side observation wall portion 101B in the front-view direction. The right-side observation wall portion 102B extends to the left from the indoor end of the left side of the right-side observation wall portion 98B, then extends slightly toward the outdoor side, and then extends further to the left. The right-side observation wall portion 102B is elongated with its longitudinal direction extending vertically. The left end of the right-side observation wall portion 102B is aligned with the right end of the left-side observation wall portion 102A in the front-view direction. The left end of the right-side observation wall portion 102B abuts or is adjacent to the right end of the left-side observation wall portion 102A.

[0105] The space surrounded by the left side visible wall portion 101A, the left side visible wall portion 98A, the left side visible wall portion 102A, the right side visible wall portion 102B, the right side visible wall portion 98B, and the right side visible wall portion 101B forms a hollow portion 106.

[0106] The indoor side holding portion 108A is provided on the indoor side of the outdoor side holding portion 97A at a distance from the outdoor side holding portion 97A. The indoor side holding portion 108A is provided on the indoor side of the left side visible wall portion 101A. The indoor side holding portion 108A is provided on the left side of the left side visible wall portion 98A. The indoor side holding portion 108A is fixed to the left side surface of the left side visible wall portion 98A, for example, by screws. The indoor side holding portion 108A is groove-shaped, opening to the left and extending in the vertical direction.

[0107] The indoor side holding portion 108B is provided on the indoor side of the outdoor side holding portion 97B at a distance from the outdoor side holding portion 97B. The indoor side holding portion 108B is provided on the indoor side of the right side visible wall portion 101B. The indoor side holding portion 108B is provided on the right side of the right side visible wall portion 98B. The indoor side holding portion 108B is fixed to the right side surface of the right side visible wall portion 98B, for example, by screws. The outdoor side holding portion 97B is groove-shaped, opening to the right and extending in the vertical direction.

[0108] The outdoor-side holding portion 13, the outdoor-side holding portion 45, the outdoor-side holding portion 73A, and the outdoor-side holding portion 73B may be collectively referred to as the "outdoor-side holding portion 13, 45, 73." The outdoor-side holding portion 26, the outdoor-side holding portion 43, the outdoor-side holding portion 97A, and the outdoor-side holding portion 97B may be collectively referred to as the "outdoor-side holding portion 26, 43, 97." The indoor-side holding portion 37, the indoor-side holding portion 63, the indoor-side holding portion 88A, and the indoor-side holding portion 88B may be collectively referred to as the "indoor-side holding portion 37, 63, 88." The indoor-side holding portion 32, the indoor-side holding portion 53, the indoor-side holding portion 108A, and the indoor-side holding portion 108B may be collectively referred to as the "indoor-side holding portion 32, 53, 108."

[0109] (glass panel) The glass panel 110 is provided in a space partitioned by the mullions 70 and the transom 10. The glass panel 110 is formed in a rectangular plate shape. The glass panel 110 is transparent. The glass panel 110 has a first glass panel 111 and a second glass panel 117 provided in the vision section 1a, and a third glass panel 122 provided in the spandrel section 1b.

[0110] The first glass panel 111 is provided in a space surrounded by the first transom 11, the second transom 41, and a pair of first mullions 71. The first glass panel 111 is held by outdoor-side holders 13, 45, and 73. The first glass panel 111 is composed of, for example, two glass panels, and more specifically, is laminated glass. An interlayer film 111a, for example, is provided between the two glass panels that make up the first glass panel 111. The interlayer film 111a is formed of, for example, an adhesive. The interlayer film 111a bonds the two glass panels that make up the first glass panel 111 together. However, the configuration of the first glass panel 111 is not limited to laminated glass and can be modified as appropriate.

[0111] A glazing gasket 112 is provided between the outdoor side surface of the first glass panel 111 and the outdoor-side holding portions 13, 45, and 73. The glazing gasket 112 is made of, for example, ethylene propylene diene rubber.

[0112] A sealant 113 and an internal spacer 114 are provided between the indoor side of the first glass panel 111 and the outdoor-side retaining portion 13, 45, 73. The sealant 113 is provided further back in the groove of the outdoor-side retaining portion 13, 45, 73 than the internal spacer 114. However, in the lower frame portion 35, the sealant 113, a backup material 115, and the internal spacer 114 are provided between the indoor side of the first glass panel 111 and the inner peripheral surface of the groove of the outdoor-side retaining portion 13 and the outdoor side of the hollow portion 14. The backup material 115 is provided between the sealant 113 and the internal spacer 114. The sealant 113 is made of, for example, a silicone-based material. The internal spacer 114 is made of, for example, ethylene propylene diene rubber. The backup material 115 is made of, for example, a glass fiber-based material.

[0113] The glazing gasket 112, sealant 113, backup material 115, and internal spacer 114 improve airtightness, watertightness, heat insulation, and sound insulation near the outer peripheral edge of the first glass panel 111.

[0114] The second glass panel 117 is provided in a space surrounded by the first transom 11, the second transom 41, and the pair of first mullions 71. The second glass panel 117 is held by the indoor-side holders 37, 63, and 88. The second glass panel 117 is provided on the indoor side of the first glass panel 111. The second glass panel 117 is provided at a distance from the first glass panel 111 in the projection direction. The second glass panel 117 is, for example, composed of two glass panels, and more specifically, double-glazed glass. The two glass panels constituting the second glass panel 117 are provided at a distance from each other in the projection direction. A spacer 117a and a sealant 117b are provided between the peripheral edges of the two glass panels constituting the second glass panel 117. The spacer 117a is made of, for example, aluminum. The sealant 117b is provided closer to the outer periphery of the second glass panel 117 than the spacer 117a. The sealing material 117b is made of, for example, a silicone-based material. However, the configuration of the second glass panel 117 is not limited to double-glazing, and can be changed as appropriate.

[0115] The first glass panel 111 corresponds to an outdoor side glass panel, and the second glass panel 117 corresponds to an indoor side glass panel.

[0116] A glazing gasket 118 is provided between the outdoor side of the second glass panel 117 and the indoor side retaining portions 37, 63, 88. The glazing gasket 118 is made of, for example, ethylene propylene diene rubber.

[0117] A glazing gasket 119 and a sealing material 121 are provided between the indoor side of the second glass panel 117 and the indoor side retaining portion 37, 63, 88. The glazing gasket 119 is provided on the back side of the sealing material 121 in the groove of the indoor side retaining portion 37, 63, 88. The glazing gasket 119 is made of, for example, ethylene propylene diene rubber. The sealing material 121 is made of, for example, a silicone-based material.

[0118] Glazing gasket 118, glazing gasket 119, and sealant 121 improve airtightness, watertightness, heat insulation, and sound insulation in the vicinity of the outer peripheral edge of second glass panel 117.

[0119] In addition, in the curtain wall 1, a first intermediate air layer 132 is formed, which is a space surrounded by the first interlining 11, the second interlining 41, a pair of first mullions 71 on the left and right, the first glass panel 111, and the second glass panel 117.

[0120] The second glass panel 117, the upper frame portion 61, the lower frame portion 35, the first vertical frame portion 87A, and the second vertical frame portion 87B constitute a shoji screen 135. The shoji screen 135 is rotatable around the second vertical frame portion 87B (more specifically, the pivot shaft portion 93). The shoji screen 135 is capable of being opened and closed toward the interior. The second glass panel 117 is provided so as to be openable and closable. A user can attach a handle portion 92 to the first vertical frame portion 87A and operate the handle portion 92 to open or close the shoji screen 135.

[0121] The third glass panel 122 is provided in a space surrounded by the first transom 11, the second transom 41, and a pair of second mullions 95. The third glass panel 122 is held by outdoor-side holders 26, 43, and 97. The third glass panel 122 is, for example, a single-layer glass panel. However, the configuration of the third glass panel 122 is not limited to single-layer glass and can be changed as appropriate.

[0122] A glazing gasket 123 is provided between the exterior side surface of the third glass panel 122 and the exterior-side holding portions 26, 43, and 97. The glazing gasket 123 is made of, for example, ethylene propylene diene rubber.

[0123] A glazing gasket 125 and a sealant 126 are provided between the indoor side of the third glass panel 122 and the outdoor-side retaining portions 26, 43, and 97. The sealant 126 is provided on the inner side of the grooves of the outdoor-side retaining portions 26, 43, and 97 relative to the glazing gasket 125. The glazing gasket 125 is made of, for example, ethylene propylene diene rubber. The sealant 126 is made of, for example, a silicone-based material.

[0124] The glazing gasket 123, the glazing gasket 125, and the sealant 126 improve the airtightness, watertightness, heat insulation, and sound insulation around the outer peripheral edge of the third glass panel 122.

[0125] (fireproof board) The fireproof board 127 is provided in the spandrel portion 1b. The fireproof board 127 is provided in a space surrounded by the first transom 11, the second transom 41, and a pair of second mullions 95. The fireproof board 127 is held by the indoor-side holding portions 32, 53, 108. Each indoor-side holding portion 32, 53, 108 holds, for example, one fireproof board 127. The fireproof board 127 has a rectangular plate shape. The fireproof board 127 is provided on the indoor side of the third glass panel 122. The fireproof board 127 is provided at a distance from the third glass panel 122 in the projection direction. The projection position of the fireproof board 127 is, for example, closer to the indoor side than the projection position of the second glass panel 117. The fireproof board 127 is fixed to the floor portion 155 by brackets B2.

[0126] The fire-resistant board 127 is made of a non-combustible material such as calcium silicate. Therefore, the fire-resistant board 127 can improve the fire resistance of the curtain wall 1. The fire-resistant board 127 is made of an opaque material. Therefore, the fire-resistant board 127 can conceal the inter-story portion 150b.

[0127] A fire-resistant tape 128 is provided in the area extending from the indoor side of the fire-resistant board 127 to the indoor side of the indoor-side retaining portions 32, 53, 108.

[0128] The fire-resistant tape 128 covers the boundary between the indoor side of the fire-resistant board 127 and the indoor side of the indoor-side retaining portions 32, 53, 108. The fire-resistant tape 128 is formed from a fire-resistant material, such as aluminum or glass cloth. Rock wool 131 is provided in the area from the indoor side of the fire-resistant board 127 to the indoor side of the first interlocking member 11, the area from the indoor side of the fire-resistant board 127 to the indoor side of the second interlocking member 41, and the area from the indoor side of the fire-resistant board 127 to the indoor side of the second mullion 95. The rock wool 131 covers the fire-resistant tape 128 from the indoor side.

[0129] In addition, the curtain wall 1 has a second intermediate air layer 133, which is a space surrounded by the first transom 11, the second transom 41, a pair of second mullions 95 on the left and right, the third glass panel 122, and the fireproof board 127.

[0130] (shielding body) The shielding body 136 is a member that adjusts the amount of solar radiation transmitted. The shielding body 136 is provided in the vision unit 1a. The shielding body 136 is provided, for example, inside the first intermediate air layer 132. The upper part of the shielding body 136 is attached to the shielding body attachment part 56.

[0131] Here, the curtain wall 101 has an insulating layer 132 formed therein, which is a space surrounded by the transom 10, the mullions 70, the first glass panel 111, and the second glass panel 117. The first intermediate air layer 132 serves as the insulating layer 132. The insulating layer 132 is a space that suppresses the transfer of heat between indoors and outdoors. The first intermediate air layer 132 is not provided with an air supply / exhaust mechanism for supplying and exhausting air in the first intermediate air layer 132 to and from the indoors and outdoors.

[0132] In this specification, the term "insulating layer" refers to a space that is substantially sealed from the outdoor space and the indoor space. The term "insulating layer" includes not only a strictly sealed space, but also a space that is substantially sealed by gaps that are not provided for ventilation. The term "gaps that are not provided for ventilation" as used herein includes, for example, gaps between components that arise due to manufacturing tolerances, gaps between components that arise due to deformation of components, gaps between components that are provided to take into account the expansion of components, and through holes (e.g., screw holes) formed for attaching components.

[0133] The visible surface of the mullions 70 is imperforate, in other words, the part of the mullions 70 that faces the insulating layer 132 is imperforate.

[0134] In this specification, "non-porous" refers to a state in which no holes are formed that connect the intermediate air layer to the indoor and outdoor spaces. Holes that connect the intermediate air layer to the indoor and outdoor spaces include not only through-holes with annular peripheries, but also slits or notches with partially open peripheries. Furthermore, even if holes are formed in the mullions 70, they are considered non-porous if the holes are blocked.

[0135] The shield 136 is provided inside the thermal insulation layer 132 .

[0136] The shielding body 136 is a blind 136. The blind 136 is made of, for example, resin. By making the blind 136 out of resin, it is possible to prevent the shielding body 136 from absorbing heat due to sunlight and from deteriorating due to moisture.

[0137] The curtain wall 1 is provided with a desiccant 137. The desiccant 137 is provided in the internal space of the holder portion 16. The internal space of the holder portion 16 is in communication with the first intermediate air layer 132 through the through-hole portion 16a. In other words, the internal space of the holder portion 16 constitutes part of the first intermediate air layer 132. The desiccant 137 is provided below the insulating layer 132. The desiccant 137 is in contact with the air in the insulating layer 132. The desiccant 137 is made of a hygroscopic material, for example, silica gel.

[0138] <Effects of the first embodiment> The curtain wall 1 of this embodiment provides the following effects.

[0139] The curtain wall 1 is provided on the outer periphery of the building 150, and includes a lattice-shaped frame 2 having a plurality of gables 10 and a plurality of mullions 70, a plurality of glass panels 110 arranged in a space partitioned by the gables 10 and the mullions 70, outdoor-side retaining portions 13, 45, 73 that hold the glass panels 110, and outdoor-side retaining portions 13, 45, 73 that are provided indoors at intervals from the outdoor-side retaining portions 13, 45, 73, and the glass panels The glass panel 110 has an indoor side holding portion 37, 63, 88 that holds the first glass panel 111, and a shielding body 136. The glass panel 110 has a first glass panel 111 that is held by the outdoor side holding portion 13, 45, 73, and a second glass panel 117 that is held by the indoor side holding portion 37, 63, 88. An insulating layer 132 is formed, consisting of a space surrounded by the mullion 10, the mullion 70, the first glass panel 111, and the second glass panel 117.

[0140] With this configuration, the heat insulating layer 132 is a space that is substantially sealed off from the outdoor space and the indoor space, which makes it possible to prevent sound from entering the heat insulating layer 132. This improves the sound insulation of the curtain wall 1.

[0141] Furthermore, since the cold air from the outdoors can be prevented from entering the heat insulating layer 132, a drop in the indoor temperature can be prevented.

[0142] If the insulating layer 132 were a substantially sealed space, the temperature inside the insulating layer 132 would easily rise, raising concerns about a decrease in cooling efficiency. However, the shielding body 136 can block sunlight, thereby suppressing the rise in temperature inside the room.

[0143] These can improve the thermal insulation properties of the curtain wall 1.

[0144] Furthermore, compared to a configuration in which an air supply and exhaust mechanism such as a slit is formed in the mullion 70, the deterioration of appearance caused by the air supply and exhaust mechanism can be suppressed, thereby improving the design of the curtain wall 1.

[0145] Therefore, it is possible to provide a curtain wall 1 that is excellent in sound insulation, heat insulation and design.

[0146] The shield 136 is provided inside the thermal insulation layer 132 .

[0147] According to this configuration, heat can be blocked by the shield 136, and therefore, the temperature rise inside the frame 2 can be suitably suppressed.

[0148] Furthermore, because the heat insulating layer 132 is an airtight space, it is possible to suppress wind pressure from acting on the shielding body 136, and therefore it is possible to suppress the shielding body 136 from shaking due to wind pressure and coming into contact with the glass panel 110. In other words, this configuration can be suitably applied to a configuration in which the space between the first glass panel 111 and the second glass panel 117 is an airtight space.

[0149] The second glass panel 117 is openable and closable.

[0150] According to this configuration, the heat insulating layer 132 can be appropriately ventilated by opening and closing the second glass panel 117. This makes it possible to prevent the temperature of the air in the heat insulating layer 132 from rising.

[0151] In addition, condensed water, dust, etc. inside the heat insulating layer 132 can be easily removed.

[0152] Furthermore, in a configuration in which the shield 136 is provided inside the heat insulating layer 132, the shield 136 can be easily operated and maintained.

[0153] The shield 136 is a blind 136 .

[0154] According to this configuration, the blinds 136 have relatively excellent weather resistance, which can increase the durability of the curtain wall 1. In addition, since the heat insulation can be improved with a relatively inexpensive configuration, the manufacturing cost of the curtain wall 1 can be reduced.

[0155] The curtain wall 1 is provided with a desiccant 137 , which is in contact with the air in the insulating layer 132 .

[0156] If the heat insulating layer 132 is sealed, there is a concern that the humidity inside the heat insulating layer 132 may increase. However, with this configuration, the desiccant 137 can suppress the humidity inside the heat insulating layer 132 from increasing.

[0157] Second Embodiment Next, a second embodiment of the present disclosure will be described with reference to Figures 5 and 6. The description will focus on differences from the first embodiment. Configurations similar to those in the first embodiment will be given the same reference numerals and descriptions thereof may be omitted.

[0158] In the curtain wall 201 of the second embodiment, the configuration of the vision section 201a is different from that of the first embodiment. As shown in Figures 5 and 6, in the curtain wall 201, the shielding body 136 is provided on the indoor side of the second glass panel 117.

[0159] A shielding body mounting portion 158 is provided at the outdoor end of the ceiling portion 151. The shielding body mounting portion 158 is provided on the indoor side of the second glass panel 117. The shielding body mounting portion 158 is provided, for example, on the outdoor side of the ceiling beam 153. The shielding body mounting portion 158 is open downward and has a groove shape extending in the left-right direction. A flat plate-shaped plate member 159 is provided on the inner peripheral surface of the shielding body mounting portion 158.

[0160] The frame 160 of the second embodiment extends indoors from the doorstop portion 57 of the first transom 211 of the second embodiment, and extends along the inner peripheral surface (plate material 159) of the shielding body mounting portion 158. The frame 160 forms the inner peripheral surface of the shielding body mounting portion 158. The frame 160 is fixed to the doorstop portion 57, more specifically, by screws. The frame 160 is fixed to the plate material 159, more specifically, by screws.

[0161] A shield 136 is attached to the shield mounting portion 158. The upper end of the shield 136 is located in the internal space of the shield mounting portion 158. The shield 136 hangs down from the shield mounting portion 158 and covers the second glass panel 117 from the indoor side.

[0162] The second transom body 242 of the second embodiment does not have a shield mounting portion 56. The second transom body 42 has a hollow portion 243 instead of the hollow portion 46, the visible wall portion 49, the visible wall portion 51, the condensation tray 52, and the hollow portion 55.

[0163] The hollow portion 243 is provided on the indoor side of the outdoor-side retaining portion 43 and the outdoor-side retaining portion 45. The hollow portion 243 extends in the front direction from the outdoor-side retaining portion 43 and the outdoor-side retaining portion 45 to a position on the indoor side of the fire-resistant board 127. The hollow portion 243 has a substantially elongated rectangular tubular shape with the longitudinal direction in the left-right direction. An indoor-side retaining portion 53 is provided on the upper surface of the hollow portion 243.

[0164] In the second embodiment, the second glass panel 117 cannot be opened or closed.

[0165] In the first interlock 211 of the second embodiment, the lower frame 35 is fixed to the doorstop 22, for example, by screws. A spacer 216 is provided between the lower frame 35 and the doorstop 22 in place of the lower one of the two airtight materials 22a. The spacer 216 is, for example, a rubber washer. The lower frame 35, the spacer 216, and the doorstop 22 are inserted together, for example, by screws.

[0166] In the second interlock 241 of the second embodiment, the upper frame portion 61 is fixed to the doorstop portion 57, for example, by screws. A spacer 246 is provided between the upper frame portion 61 and the doorstop portion 57 in place of the upper one of the two airtight materials 57a. The spacer 246 is, for example, a rubber washer. The upper frame portion 61, the spacer 246, and the doorstop portion 57 are inserted together, for example, by screws.

[0167] In the first mullion 271 of the second embodiment, the first vertical frame portion 87A is fixed to the indoor side of the first mullion main body portion 72 (more specifically, the left-side facing wall portion 77A), for example, by screws. An airtight material 87Aa is provided on the outdoor side of the first vertical frame portion 87A. The airtight material 87Aa is made of, for example, synthetic rubber. A spacer 272A is provided between the first vertical frame portion 87A and the first mullion main body portion 72. The airtight material 87Aa is provided on the left side of the spacer 272A. The spacer 272A is, for example, a rubber washer. The first vertical frame portion 87A, the spacer 272A, and the left-side facing wall portion 77Aa are inserted together, for example, by screws.

[0168] The second vertical frame portion 87B is fixed to the indoor side of the first vertical frame main body portion 72 (more specifically, the right-side facing wall portion 77B), for example, by screws. An airtight material 87Ba is provided on the outdoor side of the second vertical frame portion 87B. The airtight material 87Ba is made of, for example, synthetic rubber. A spacer 272A is provided between the second vertical frame portion 87B and the first vertical frame main body portion 72. The airtight material 87Ba is provided on the right side of the spacer 272B. The spacer 272B is, for example, a rubber washer. The second vertical frame portion 87B, the spacer 272B, and the left-side facing wall portion 77Ba are inserted together, for example, by screws.

[0169] In the second embodiment, the first mullion 271 is not provided with the partition portion 81, the doorstop portion 85A, the doorstop portion 85B, the handle portion 92, and the rotation shaft portion 93.

[0170] In the second embodiment, the desiccant 137 is provided on the upper part of the heat insulating layer 132. The desiccant 137 is provided in the second open end 41 instead of the first open end 11. The desiccant 137 is provided on the upper part of the heat insulating layer 132.

[0171] The second transom body 242 has a holder 245 .

[0172] The holder portion 245 is provided near the indoor side and upper end of the first intermediate air layer 132 (insulating layer 132). The holder portion 245 is provided between the hollow portion 243 and the doorstop portion 57. The holder portion 245 is fixed to the hollow portion 243, specifically by screws. The holder portion 245 is fixed to the hollow portion 243, specifically by screws. A desiccant 137 is provided in the internal space of the holder portion 245. The desiccant 137 can come into contact with the air in the insulating layer 132, for example, through a through-hole 245a provided in the holder portion 245. The rock wool 131 continuously covers the lower end of the fireproof board 127, the hollow portion 243, the holder portion 245, and the upper end of the doorstop portion 57 from the indoor side.

[0173] The first open upper portion 212 of the second embodiment has a visible wall portion 213 and a visible wall portion 215 instead of the visible wall portion 15, the holder portion 16, and the hollow portion .

[0174] The visible wall portion 213 is provided on the outdoor side of the hollow portion 14. The visible wall portion 213 extends in the visible direction from the indoor side and upper end of the hollow portion 14. In the second embodiment, the upper connection portion 17 is adjacent to the lower surface of the visible wall portion 213.

[0175] The visible wall portion 215 is provided on the indoor side of the visible wall portion 213. The vertical middle portion of the visible wall portion 215 is connected to the indoor side end portion of the visible wall portion 213. The visible wall portion 215 is a generally flat plate whose surface extends in the visible direction. The upper portion of the visible wall portion 215 is fixed to the hollow portion 14, more specifically, by screws. The lower portion of the visible wall portion 215 is fixed to the frame 33, more specifically, by screws.

[0176] The position of the second glass panel 117 in the front view is closer to the indoor side than the position of the fire-resistant board 127 in the front view.

[0177] In this way, the position where the desiccant 137 is provided is not limited to the position in the first embodiment, but can be changed as appropriate.

[0178] <Effects of the second embodiment> The curtain wall 1 of this embodiment provides the following effects.

[0179] The second glass panel 117 cannot be opened or closed.

[0180] According to this configuration, the heat insulating layer 132 can be sealed more suitably, and the effects obtained by the heat insulating layer 132 can be obtained more suitably.

[0181] The shield 136 is provided on the indoor side of the second glass panel 117.

[0182] When the shielding body 136 is provided on the indoor side of the second glass panel 117, it is considered that the strength and weather resistance required of the shielding body 136 will be lower than when the shielding body 136 is provided on the outdoor side of the second glass panel 117. With this configuration, it is possible to easily use a less expensive shielding body 136, which makes it easier to reduce the manufacturing costs of the curtain wall.

[0183] The desiccant 137 is provided on top of the heat insulating layer 132 .

[0184] Since the density of air decreases as the humidity of the air increases, it is thought that air with higher humidity tends to collect at the top of the insulating layer 132. With this configuration, the desiccant 137 can be brought into contact with the air above the insulating layer 132, thereby efficiently dehumidifying the insulating layer 132. In addition, it is possible to prevent problems such as the desiccant 137 coming into contact with condensed water that has flowed down inside the insulating layer 132 and dust accumulating on the top surface of the desiccant 137.

[0185] <Third embodiment> A third embodiment of the present disclosure will be described below with reference to Figures 7 and 8. The description will focus on differences from the second embodiment. Configurations similar to those in the second embodiment will be given the same reference numerals and descriptions thereof may be omitted.

[0186] In the curtain wall 301 of the third embodiment, the configuration of the vision section 301a is different from that of the above-mentioned embodiments. As shown in Figures 7 and 8, the vision section 1a of the curtain wall 301 of the third embodiment is smaller than the vision section 1a of the second embodiment. The distance between the first glass panel 111 and the second glass panel 117 in the third embodiment is smaller than the distance between the first glass panel 111 and the second glass panel 117 in the second embodiment. In other words, the projection dimension of the insulating layer 132 (first intermediate air layer 132) in the third embodiment is smaller than the projection dimension of the insulating layer 132 (first intermediate air layer 132) in the first and second embodiments.

[0187] The second glass panel 117 overlaps the fireproof board 127 in the vertical direction. The first intermediate air layer 132 has a smaller dimension in the projection direction than the second intermediate air layer 133.

[0188] In the first transom 311 of the third embodiment, the first transom upper part 312 is not provided with a door stopper 22. The indoor side retaining part 37 is fixed to the projection wall part 213, more specifically, by screws. The indoor side retaining part 37 overlaps with the fireproof board 127 when viewed in the vertical direction.

[0189] In the second transom 341 of the third embodiment, the position of the holder 245 in the second transom main body 342 in the front direction is closer to the outdoor side than the position of the holder 245 in the second embodiment in the front direction. The holder 245 overlaps with the indoor holding part 37 in the vertical direction.

[0190] The vertical dimension of the doorstop portion 57 of the second transom main body 42 is smaller than the vertical dimension of the doorstop portion 57 in the second embodiment. The projection dimension of the doorstop portion 57 is slightly larger than the projection dimension of the doorstop portion 57 in the second embodiment. An indoor-side extension portion 343 is provided at the indoor-side lower end of the doorstop portion 57. The indoor-side extension portion 343 extends from the indoor-side lower end of the doorstop portion 57 toward the indoor side and further rises upward. The indoor-side extension portion 343 is approximately L-shaped when viewed left and right. The rising portion of the indoor-side extension portion 343 is fixed to the frame 160, more specifically, by screws. The underside of the indoor-side extension portion 343 and the underside of the doorstop portion 57 are approximately flush with each other.

[0191] The indoor side retaining portion 63 is provided below the doorstop portion 57 and the indoor side extending portion 343. The indoor side retaining portion 63 overlaps the fireproof board 127 in the vertical direction. The indoor side retaining portion 63 is fixed to the underside of the doorstop portion 57, more specifically, by screws. An airtight material 343a is provided between the doorstop portion 57 and the underside of the indoor side extending portion 343. The airtight material 343a is made of, for example, ethylene propylene diene rubber.

[0192] In the first mullion 371 of the third embodiment, the indoor side retaining portion 88A is provided on the left side of the first mullion main body portion 72. The indoor side retaining portion 88A is located closer to the outdoor side than the indoor side end of the first mullion main body portion 72. The indoor side retaining portion 88A overlaps the fireproof board 127 in the left-right direction. The indoor side retaining portion 88A is fixed to the left side surface of the first mullion main body portion 72, more specifically, screwed in place. An airtight material 371a is provided between the outdoor side and right side end of the indoor side retaining portion 88A and the first mullion main body portion 72. The airtight material 371a is formed, for example, from ethylene propylene diene rubber.

[0193] The indoor side retaining portion 88B is provided on the right side of the first mullion body portion 72. The indoor side retaining portion 88B is located closer to the outdoors than the indoor side end of the first mullion body portion 72. The indoor side retaining portion 88B overlaps the fireproof board 127 in the left-right direction. The indoor side retaining portion 88B is fixed to the right side of the first mullion body portion 72, more specifically, by screws. An airtight material 371a is provided between the outdoor side and left side end of the indoor side retaining portion 88B and the first mullion body portion 72. The airtight material 371a is formed, for example, from ethylene propylene diene rubber.

[0194] <Effects of the third embodiment> The curtain wall 301 of this embodiment provides the following effects.

[0195] In the curtain wall 301 of this embodiment, the vision section 1a is made smaller than that of the second embodiment. The projection dimension of the first intermediate air layer 132 (i.e., the heat insulating layer 132) is relatively small. This makes it easier to ensure a spacious living space.

[0196] Furthermore, in the curtain wall 301 of this embodiment, the shielding body 136 is disposed on the indoor side of the second glass panel 117. This makes it easier to reduce the projected dimension of the heat insulating layer 132.

[0197] Furthermore, in the curtain wall 301 of this embodiment, the projection positions of the indoor-side holding parts 37, 63, 88 that hold the second glass panel 117 overlap with the projection position of the fire-resistant board 127. The curtain wall 1 having such a configuration can also sufficiently improve sound insulation and heat insulation. In other words, the projection position of the second glass panel 117 does not necessarily have to be closer to the indoor side than the projection position of the fire-resistant board 127.

[0198] Although the embodiments of the curtain wall of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and includes modifications, improvements, etc. within the scope of achieving the object of the present disclosure. Various modified examples and alterations that do not depart from the gist of the present disclosure are encompassed in the present disclosure.

[0199] For example, in the above embodiment, the shielding body 136 is a blind, but the type of shielding body 136 is not limited to this. The shielding body 136 may be, for example, a light-control glass that can adjust the amount of solar radiation transmitted by electronic control. For example, at least one of the outdoor glass panel and the indoor glass panel may be a light-control glass that functions as a shielding body.

[0200] According to this configuration, light blocking can be achieved without providing the curtain wall with shading components such as blinds, thereby simplifying the configuration of the curtain wall. This allows the curtain wall to be suitably improved. Furthermore, the light-controlling glass can be operated by electronic control. Therefore, the light-controlling glass can be suitably used as an outdoor-side glass panel in a configuration in which the indoor-side glass panel cannot be opened or closed.

[0201] The light control glass may be provided in the curtain wall as a separate member from the outdoor glass panel and the indoor glass panel. The curtain wall may include both the light control glass as a shielding body and blinds as a shielding body.

[0202] The blinds may be manually opened or closed, or may be remotely opened or closed. Remotely opened or closed blinds are suitable for use in a structure in which the indoor glass panel is openable and closable.

[0203] In each of the above embodiments, the spandrel portion 1b was provided with a third glass panel 122 and a fire-resistant board 127, but the spandrel portion 1b may be provided with other types of surface materials instead of the third glass panel 122 or the fire-resistant board 127.

[0204] [Aspect 1] A curtain wall installed on the periphery of a building, comprising: a lattice-shaped frame having a plurality of uprights and a plurality of transoms; a plurality of glass panels arranged in a space partitioned by the uprights and the transoms; an outdoor-side retaining portion that holds the glass panels; an indoor-side retaining portion that is arranged on the indoor side of the outdoor-side retaining portion at a distance from the outdoor-side retaining portion and holds the glass panels; and a shielding body, wherein the glass panels comprise outdoor-side glass panels held by the outdoor-side retaining portion and indoor-side glass panels held by the indoor-side retaining portion, and an insulating layer is formed consisting of the space surrounded by the transoms, the uprights, the outdoor-side glass panels, and the indoor-side glass panels. [Aspect 2] The curtain wall of aspect 1, wherein the shielding body is disposed inside the thermal insulation layer. [Aspect 3] The curtain wall according to aspect 1 or 2, wherein the shielding body is disposed on the indoor side of the indoor-side glass panel. [Aspect 4] A curtain wall according to any one of aspects 1 to 3, wherein the indoor-side glass panel is openable and closable. [Aspect 5] A curtain wall according to any one of aspects 1 to 3, wherein the indoor-side glass panel cannot be opened or closed. [Aspect 6] A curtain wall according to any one of aspects 1 to 5, wherein the shielding body is a blind. [Aspect 7] A curtain wall according to any one of aspects 1 to 6, wherein at least one of the outdoor-side glass panel and the indoor-side glass panel is a light-control glass serving as the shielding body. [Aspect 8] Aspect 8. The curtain wall according to any one of aspects 1 to 7, wherein the curtain wall includes a desiccant that comes into contact with the air in the thermal insulation layer. [Explanation of symbols]

[0205] 1, 201, 301: curtain wall, 2: frame, 10: transom, 13, 26, 43, 45, 73A, 73B, 97A, 97B: outdoor side retaining part, 32, 53, 89A, 89B, 108A, 108B: indoor side retaining part, 70: mullion, 110: glass panel, 111: first glass panel (outdoor side glass panel), 117: second glass panel (indoor side glass panel), 132: insulating layer, 136: shielding body (blind), 137: desiccant, 150: building.

Claims

1. A curtain wall installed on the outer perimeter of a building, a lattice-shaped frame body having a plurality of lattices and a plurality of mullions; Multiple glass panels are arranged in the space partitioned by the transom and the mullions, an outdoor-side holding portion that holds the glass panel; An indoor-side retaining portion is provided on the indoor side of the outdoor-side retaining portion, spaced apart from the outdoor-side retaining portion, and holds the glass panel. A shield; Equipped with the glass panels include an outdoor-side glass panel held by the outdoor-side holding portion and an indoor-side glass panel held by the indoor-side holding portion, A curtain wall in which an insulating layer is formed as a space enclosed by the transom, the mullions, the outdoor glass panel, and the indoor glass panel.

2. The curtain wall according to claim 1, wherein the shielding body is disposed inside the thermal insulation layer.

3. The curtain wall according to claim 1 or 2, wherein the shielding body is positioned on the indoor side of the indoor-side glass panel.

4. The curtain wall according to claim 1 or 2, wherein the indoor glass panel is openable and closable.

5. The curtain wall according to claim 1 or 2, wherein the indoor glass panel is not openable or closable.

6. The curtain wall according to claim 1 or 2, wherein the shielding body is a blind.

7. The curtain wall according to claim 1 or 2, wherein at least one of the outdoor glass panel and the indoor glass panel is a light-adjusting glass panel serving as a shielding element.

8. The curtain wall according to claim 1 or 2, wherein the curtain wall comprises a drying material that comes into contact with the air in the heat insulating layer.

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