Curtain wall

Abstract

To provide a curtain wall that can introduce outside air between an outdoor panel and an indoor panel and has a good design.SOLUTION: A curtain wall comprises: indoor side panels 4B arranged adjacently to each other in a left-right direction; outdoor side panels 4A arranged adjacently to each other in a left-right direction and arranged at an outdoor side of the indoor side panels 4B; a panel space S1 formed between the indoor side panel 4B and the outdoor side panel 4A; a mullion member 16 supporting left and right ends of the outdoor side panel 4A; a first inlet T11 formed on an outdoor surface of the mullion member 16 facing the outdoors and capable of introducing outside air into an interior of the mullion member; and a second inlet T13 formed on a width surface of the mullion member 16 facing the panel space S1 and communicating with the first inlet T11 and the panel space S1.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] Conventionally, a double-skin curtain wall, in which two glass panels are installed at a distance in the indoor / outdoor directions, has been known as a curtain wall installed at an opening of a building. A space is formed between the two glass panels. A configuration has been proposed in which an air circulation port is formed on the visible surface corresponding to the side of the mullion, and outside air is introduced from the circulation port into the space between the two glass panels (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-111833 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the curtain wall of Patent Document 1, the ventilation openings are formed on the visible surface of the mullion, which makes them noticeable from the indoor side and results in poor design.

[0005] The present disclosure has been made in consideration of the above circumstances, and provides a curtain wall that is capable of introducing outside air between an outdoor panel and an indoor panel and has good design properties. [Means for solving the problem]

[0006] A curtain wall according to one embodiment of the present disclosure comprises indoor-side panels arranged adjacent to each other in the left-right direction, an outdoor-side panel arranged adjacent to each other in the left-right direction and arranged on the outdoor side of the indoor-side panel, a panel space formed between the indoor-side panel and the outdoor-side panel, a stand member supporting the left-right ends of the outdoor-side panel, a first inlet formed on the outdoor surface of the stand member facing the outdoors and capable of introducing outside air into the interior of the stand member, and a second inlet formed on a visible surface of the stand member facing the panel space portion and communicating with the first inlet and the panel space portion. [Brief description of the drawings]

[0007] [Figure 1] FIG. 2 is a front view of the curtain wall according to the present embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Diagram 3] FIG. 2 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is an enlarged view of part IV in FIG. [Diagram 5] FIG. 4 is a schematic diagram showing the flow of outside air. [Figure 6] This is a horizontal cross-sectional view when an airtight material is installed. [Figure 7] 4 is an enlarged view of a portion IV in FIG. 3 according to a modified example of the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0009] In the following explanation, the direction connecting the outdoor side and the indoor side and running horizontally is referred to as the indoor-outdoor direction. The direction perpendicular to the indoor-outdoor direction and running horizontally is referred to as the left-right direction. The direction perpendicular to the indoor-outdoor direction and the left-right direction is referred to as the up-down direction. The indoor-outdoor direction is indicated by arrow Y, with the outdoor side indicated as the +Y side in Figure 2 etc. and the indoor side indicated as the -Y side in Figure 2 etc. The left-right direction is indicated by arrow X. The up-down direction is indicated by arrow Z.

[0010] As shown in Fig. 1, the curtain wall 100 is composed of a plurality of curtain wall units 101 arranged adjacent to each other in the left-right and up-down directions and connected to each other. As shown in Fig. 2, the curtain wall unit 101 includes an outdoor side frame body 1, an indoor side frame body 2, an outdoor side glass panel 4A, and an indoor side glass panel 4B.

[0011] The outdoor frame body 1 includes a pair of outdoor side mullions 11, 11 shown in FIG. 3, an outdoor upper mullion 12 which serves as the upper frame, and an outdoor lower mullion 13 which serves as the lower frame, shown in FIG. 2. The outdoor frame body 1 supports the outdoor glass panel 4A. As shown in FIG. 3, the outdoor side mullions 11 extend in the vertical direction. The pair of outdoor side mullions 11, 11 are spaced apart in the left-right direction. As shown in FIG. 2, the outdoor upper mullion 12 and the outdoor lower mullion 13 extend in the left-right direction. The outdoor upper mullion 12 connects the upper ends of the pair of outdoor side mullions 11, 11. The outdoor lower mullion 13 connects the lower ends of the pair of outdoor side mullions 11, 11.

[0012] The outdoor side frame bodies 1 are arranged adjacent to each other in the left-right and up-down directions. An outdoor side glass panel 4A is arranged on each outdoor side frame body 1. The outdoor side glass panel 4A is double-glazed. The outdoor side glass panel 4A may be single-glazed or a panel made of a material other than glass. The outdoor side glass panel 4A corresponds to the outdoor side panel in the claims.

[0013] The indoor side frame body 2 is disposed on the indoor side of the outdoor side frame body 1. The indoor side frame body 2 may be connected to the outdoor side frame body 1 by a connecting member (not shown). The indoor side frame body 2 includes a pair of indoor side mullions 21, 21 shown in FIG. 3, an indoor side upper mullion 22 serving as an upper frame, and an indoor side lower mullion 23 serving as a lower frame, shown in FIG. 2. The indoor side frame body 2 supports the indoor side glass panel 4B. The indoor side mullions 21 extend in the vertical direction. The pair of indoor side mullions 21, 21 are disposed apart in the left-right direction. As shown in FIG. 2, the indoor side upper mullion 22 and the indoor side lower mullion 23 extend in the left-right direction. The indoor side upper mullion 22 connects the upper ends of the pair of indoor side mullions 21, 21 to each other. The indoor side lower mullion 23 connects the lower ends of the pair of indoor side mullions 21, 21 to each other.

[0014] The indoor side frame bodies 2 are arranged adjacent to each other in the left-right and up-down directions. An indoor side glass panel 4B is arranged on each indoor side frame body 2. The indoor side glass panel 4B is a double-glazed glass. The indoor side glass panel 4B may be a single-glazed glass or a panel made of a material other than glass. The indoor side glass panel 4B corresponds to the indoor side panel in the claims.

[0015] A panel space S1 is formed between the outdoor side glass panel 4A and the indoor side glass panel 4B. The outdoor side glass panel 4A and the indoor side glass panel 4B are spaced apart from each other by, for example, about 500 mm.

[0016] The structure of the outdoor side wall 11 will be described in detail. As shown in Fig. 4, the outdoor side wall 11 supporting the left-right end 4a of one of a pair of outdoor side glass panels 4A adjacent in the left-right direction is referred to as the first wall 11A. The outdoor side wall 11 supporting the left-right end 4a of the other of a pair of outdoor side glass panels 4A adjacent in the left-right direction is referred to as the second wall 11B. The first wall 11A and the second wall 11B are shaped symmetrically in the left-right direction. The first wall 11A and the second wall 11B may be collectively referred to as the wall member 16.

[0017] In the explanation of the outdoor side columns 11, the left-right direction may be referred to as the width direction. The center side in the left-right direction of a pair of adjacent outdoor side columns 11, 11 may be referred to as the inside in the width direction, and the side opposite the center side in the left-right direction may be referred to as the outside in the width direction.

[0018] The outdoor side column 11 has a first plate portion 111, a second plate portion 112, a third plate portion 113, a fourth plate portion 114, a fifth plate portion 115, and a sixth plate portion 116.

[0019] The first plate portion 111 is formed in a plate shape. The plate surface of the first plate portion 111 faces the width direction. The second plate portion 112 extends from the indoor end of the first plate portion 111 toward the inside in the width direction. The second plate portion 112 is formed in a plate shape. The plate surface of the second plate portion 112 faces the indoor / outdoor direction. The third plate portion 113 extends from the middle of the first plate portion 111 in the indoor / outdoor direction toward the inside in the width direction. The third plate portion 113 is formed in a plate shape. The plate surface of the third plate portion 113 faces the indoor / outdoor direction. The fourth plate portion 114 connects the inner end of the second plate portion 112 in the width direction and the inner end of the third plate portion 113 in the width direction. The fourth plate portion 114 is formed in a plate shape. The plate surface of the fourth plate portion 114 faces the width direction.

[0020] The first plate portion 111, the second plate portion 112, the third plate portion 113 and the fourth plate portion 114 form a hollow portion S2 having a substantially rectangular horizontal cross section.

[0021] The fifth plate portion 115 extends from the outdoor end of the first plate portion 111 toward the inside in the width direction. The fifth plate portion 115 is formed in a plate shape. The plate surface of the fifth plate portion 115 faces the indoor / outdoor direction. The sixth plate portion 116 extends from the inner end of the fifth plate portion 115 in the width direction toward the outdoor side. A pressing edge 118 is engaged with the sixth plate portion 116. A groove portion 119 that opens to the outside in the width direction is formed by the fifth plate portion 115, the sixth plate portion 116, and the pressing edge 118. The edge 4a of the outdoor side glass panel 4A is fitted into the groove portion 119.

[0022] A portion of first plate portion 111 that is closer to the outdoors than the connection portion with third plate portion 113 and closer to the indoors than the connection portion with fifth plate portion 115 is referred to as first plate intermediate portion 117.

[0023] In the upright member 16, the first upright 11A and the second upright 11B are arranged so that the fourth plate portion 114 faces each other. The second upright 11B is configured as a symmetrical structure of the first upright 11A, and a description thereof will be omitted. A upright space S10 is formed between the first upright 11A and the second upright 11B.

[0024] The mullioned space S10 has an outdoor space S11, a wide space S12, and an indoor space S13.

[0025] The outdoor space S11 is formed between the sixth plate portion 116 and the ridge 118 of the first upright 11A and the sixth plate portion 116 and the ridge 118 of the second upright 11B. The wide space S12 is formed between the first plate intermediate portion 117 of the first upright 11A and the first plate intermediate portion 117 of the second upright 11B. The indoor space S13 is formed between the fourth plate portion 114 of the first upright 11A and the fourth plate portion 114 of the second upright 11B. The sixth plate portion 116 and the fourth plate portion 114 are arranged at approximately the same position in the width direction. The outdoor space S11 and the indoor space S13 have approximately the same width length. The first plate intermediate portion 117 is arranged set back outward in the width direction from the sixth plate portion 116 and the fourth plate portion 114. The width direction length of the wide space S12 is longer than the width direction lengths of the outdoor space S11 and the indoor space S13.

[0026] The outdoor space S11 is open to the outdoor side. The opening in the outdoor space S11 is called the first inlet T11. The first inlet T11 is located on a line connecting the surface 118a of the edging 118 of the first mullion 11A facing the outdoors and the surface 118a of the edging 118 of the second mullion 11B facing the outdoors.

[0027] The indoor space S13 opens into the panel space S1. The opening in the indoor space S13 is referred to as the second inlet T13. The second inlet T13 is located on a line connecting the sight surface 112a of the second plate portion 112 of the first mullion 11A facing the panel space S1 and the sight surface 112a of the second plate portion 112 of the second mullion 11B facing the panel space S1.

[0028] The outdoor space S11 is in communication with the outdoor space S11, the wide space S12, the indoor space S13, the first introduction port T11, and the panel space portion S1.

[0029] A water-repellent member 5 is arranged in the wide space S12. The water-repellent member 5 is fixed to the third plate portion 113 of one of the outdoor side columns 11 via a fixing member 6. The water-repellent member 5 is arranged over substantially the entire length of the outdoor side column 11 in the vertical direction. A plurality of fixing members 6 are fixed to the water-repellent member 5 at intervals in the vertical direction. In FIG. 4, the fixing members 6 are fixed to the second column 11B, but they may also be fixed to the first column 11A.

[0030] The fixing member 6 has a first fixing portion 61 and a second fixing portion 66. The first fixing portion 61 is disposed along a surface of the third plate portion 113 facing the outdoors. The first fixing portion 61 is fixed to the third plate portion 113 of the second mullion 11B with a screw 62. The second fixing portion 66 extends inward in the width direction from the first fixing portion 61. A nut groove 67 in which a nut 68 is placed is formed in the second fixing portion 66.

[0031] The water return member 5 has a fixed portion 51, a guide portion 52, and an extension portion 53. The fixed portion 51 is disposed on the outdoor side of the second fixed portion 66 of the fixed member 6. A bolt 54 is inserted through a bolt hole in the fixed portion 51 and fastened to a nut 68 provided on the fixed member 6. The guide portion 52 is provided on both sides in the width direction of the fixed portion 51. A guide surface 52a on the indoor side of the guide portion 52 is arc-shaped. The guide surface 52a has a convex shape that bulges outward in the width direction and toward the indoor side. The guide surface 52a is a quarter circle. The extension portion 53 protrudes from the fixed portion 51 to the outdoor side. The extension portion 53 is provided at two locations spaced apart in the width direction.

[0032] Rainwater that has entered the wide space S12 from the first inlet T11 through the outdoor space S11 collides with, for example, the tip of the guide portion 52 or the extension portion 53 of the water-repelling member 5. By colliding with the water-repelling member 5, the rainwater is prevented from entering the indoor side more than by the water-repelling member 5 in the mullion space S10.

[0033] As shown in FIG. 5, in the area where the fixing member 6 is not attached, the outside air A shown by the two-dot chain line is introduced into the outdoor space S11 from the first inlet T11. The outside air passes through the outdoor space S11 from the first inlet T11 and is introduced into the wide space S12. In the wide space S12, the outside air A collides with the tip of the guide portion 52 or the extension portion 53 of the water return member 5, for example, and flows to both outsides in the width direction. The outside air A flows to the indoor side between the guide portion 52 and the first plate middle portion 117 of the outdoor side stand 11. The outside air A is guided by the guide surface 52a between the guide portion 52 and the third plate portion 113 of the outdoor side stand 11 and flows inward in the width direction. Outside air A flows inward from both outer sides in the width direction and is collected near the boundary between the wide space S12 and the indoor space S13, passes through the indoor space S13, and is introduced into the outdoor space S11 through the first inlet T11.

[0034] As shown in Figure 4, at the location where the fixing member 6 is attached, the outside air A after colliding with the water-repelling member 5 in the wide space S12 passes mainly through the side in the width direction where the fixing member 6 is not attached, that is, the left side of the paper in Figure 4, and passes between the fixing member 6 and the third plate portion 113 to be introduced into the indoor space S13.

[0035] As shown in FIG. 6, the water-returning member 5 has a portion where an airtight material 7 is provided. The airtight material 7 is provided on both sides of the water-returning member 5 in the width direction. The airtight material 7 has a fitting portion 71 and a fin portion 72. The fitting portion 71 is fitted between the tip of the guide portion 52 of the water-returning member 5 and the tip of the extension portion 53. The fin portion 72 extends from the fitting portion 71 to the outdoor side. The fin portion 72 is provided at two positions separated in the width direction. The tip of the fin portion 72 abuts against the surface 115a of the fifth plate portion 115 of the outdoor side stand 11 facing the indoor side. The airtight material 7 closes the space between the water-returning member 5 and the surface 115a of the fifth plate portion 115, thereby restricting the flow of the outside air A. The surface 115a of the fifth plate portion 115 corresponds to the inner surface of the first stand and the inner surface of the second stand in the claims.

[0036] As shown in FIG. 1, the airtight material 7 is not attached to the area B1 indicated by the two-dot chain line. The airtight material 7 is attached to the area B2 indicated by the two-dot chain line. In one upright member 16A, when the area B1 is at the lower end, the upper side of the area B1 is the area B2. In the upright member 16B arranged next to the one upright member 16A, the upper end is the area B1, and the lower side of the area B1 is the area B2. Outside air is introduced into the panel space S1 from the area B1 of the upright member 16A, and the rising outside air is discharged to the outside from the area B1 at the upper end of the adjacent upright member 16B. The flow of outside air discharged from the panel space S1 to the outside is a flow in the opposite direction to the flow introduced from the outside to the panel space S1. The outside air passes through the second inlet T13 from the panel space portion S1, the indoor space S13, the wide space S12, and the outdoor space S11, and is discharged to the outdoors from the first inlet T11.

[0037] In the example shown in FIG. 1, the vertical length of the region B1 where the airtight material 7 is not attached is shorter than the vertical length of the region B2 where the airtight material 7 is attached.

[0038] In the curtain wall 100, outside air is introduced into the panel space S1 from a first inlet T11 formed on the outdoor surface of the upright member 16 through a second inlet T13 formed on the visible surface of the upright member 16. Outside air can be introduced into the panel space S1 between the outdoor panel 4A and the indoor panel 4B.

[0039] The first inlet T11 and the second inlet T13 are formed on a surface along the left-right direction of the upright member 16. If the first inlet and the second inlet were formed on a surface along the indoor-outdoor direction, the first inlet and the second inlet would be conspicuous when viewed from indoors, but since the first inlet T11 and the second inlet T13 are formed on a surface along the left-right direction, they are not conspicuous when viewed from indoors, resulting in a good design.

[0040] The mullion space S10 formed between each outdoor side mullion 11 supporting adjacent outdoor side glass panels 4A, 4A serves as a passage for outside air. Since there is no need to form through holes penetrating the outdoor side mullion 11 in the indoor-outdoor direction to serve as a passage for outside air, the outdoor side mullion 11 can be easily manufactured.

[0041] The outside air is guided along the arc-shaped guide surface 52a of the water-return member 5. The outside air can be smoothly guided into the upright space S10.

[0042] The outside air can flow evenly along the guide surfaces 52a on both the left and right sides of the water-return member 5.

[0043] Since the water-repelling member 5 is provided with an airtight material 7, the gap between the water-repelling member 5 and the surface 115a of the fifth plate portion 115 of the outdoor side stand 11 is blocked. In the area where the airtight material 7 is provided, the introduction of outside air into the panel space portion S1 is restricted, so the flow rate, flow, etc. of the outside air can be adjusted.

[0044] (Modification) Next, a curtain wall according to a modified example will be described mainly with reference to Fig. 7. In the description of the modified example shown below, the same members as those described above are given the same reference numerals, and the description thereof will be omitted.

[0045] 7, in the curtain wall 100A, the fixing member 6A is attached to each of the first and second uprights 11A and 11B. The fixing member 6A has a first fixing portion 61, a second fixing portion 63, and a support portion 64.

[0046] The first fixing part 61 of the fixing member 6A is fixed to the third plate part 113 of the outdoor side column 11 with a screw 62. The second fixing part 63 extends from the inside in the width direction of the first fixing part 61 to the outdoor side. The support part 64 extends from the outside end part in the width direction of the first fixing part 61 to the outdoor side. The tip part 64a of the support part 64 is shaped to correspond to the guide surface 52a of the water return member 5A described later.

[0047] The water returning member 5A has a first water returning portion 55, a second water returning portion 56, and a connection portion 59.

[0048] The first water returning section 55 is fixed to the first upright 11A. The first water returning section 55 has a fixed section 57 and a guide section 52. The fixed section 57 is arranged along the outer side in the width direction of the second fixed section 63 of the fixed member 6A. The fixed section 57 is fixed to the second fixed section 63 with a screw 58. The guide section 52 is provided at the indoor end of the fixed section 57. The guide section 52 is supported by a tip section 64a of a support section 64 of the fixed member 6A. In the area where the fixed member 6A is not attached, the guide surface 52a of the guide section 52 is exposed.

[0049] The second water return section 56 is fixed to the second upright 11B. The second water return section 56 has a fixed section 57, a guide section 52, and an engagement section 60. The configurations of the fixed section 57 and guide section 52 of the second water return section 56 are the same as those of the fixed section 57 and guide section 52 of the first water return section 55. The engagement section 60 extends inward in the width direction from the outdoor side end of the fixed section 57. The surface of the engagement section 60 facing the indoor side is formed with a groove for engaging with the connection section 59 described later.

[0050] The connecting part 59 connects the first water return part 55 and the second water return part 56. The end of the connecting part 59 on the first water return part 55 side abuts the tip of the fixing part 57 of the first water return part 55. The connecting part 59 may be fixed to the first water return part 55. The end of the connecting part 59 on the second water return part 56 side engages with the groove of the engaging part 60.

[0051] In the curtain wall 100, outside air is introduced into the panel space S1 from a first inlet T11 formed on the outdoor surface of the upright member 16 through a second inlet T13 formed on the visible surface of the upright member 16. Outside air can be introduced into the panel space S1 between the outdoor panel 4A and the indoor panel 4B.

[0052] The first inlet T11 and the second inlet T13 are formed on a surface along the left-right direction of the upright member 16. If the first inlet T11 and the second inlet T13 were formed on a surface along the indoor-outdoor direction, the first inlet T11 and the second inlet T13 would be conspicuous when viewed from indoors, but since the first inlet T11 and the second inlet T13 are formed on a surface along the left-right direction, they are not conspicuous when viewed from indoors, and the design is good.

[0053] The water-returning member 5A is divided into a first water-returning section 55 fixed to the first upright 11A and a second water-returning section 56 fixed to the second upright 11B, and the first water-returning section 55 and the second water-returning section 56 are connected by a connection section 59. By dividing the water-returning member 5A, components such as the first water-returning section 55 and the second water-returning section 56 can be made smaller.

[0054] Although the preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings, it goes without saying that the present disclosure is not limited to the examples. The shapes and combinations of the components shown in the above examples are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present disclosure.

[0055] In the embodiment described above, the vertical length of the region B1 where the airtight material 7 is not attached is shorter than the vertical length of the region B2 where the airtight material 7 is attached, but this is not limited to the above. The airtight material 7 only needs to be provided in at least a portion of the water-reflecting member 5 in the vertical direction. The vertical length of the region B1 may be longer than the vertical length of the region B2. In one upright member 16, the region B1 where the airtight material 7 is not attached may be provided in multiple locations above and below.

[0056] In the embodiment described above, the mullion member 16 supporting the exterior glass panels 4A, 4A adjacent to each other in the left-right direction is configured with two members to have a first mullion 11A and a second mullion 11B, but this is not limited to this. A mullion member configured with one member may support two exterior glass panels. It is sufficient that the first inlet is formed on the exterior surface of the mullion member and the second inlet is formed on the visible surface.

[0057] In the embodiment described above, the water-returning member 5 is provided, but the present invention is not limited to this. The water-returning member 5 does not necessarily have to be provided.

[0058] In the embodiment described above, the water-returning member 5 has the guide surface 52a on both sides in the width direction, but this is not limited to this. The guide surface 52a may be formed only on one side in the width direction of the water-returning member 5. The guide surface 52a may not be formed.

[0059] (1) Indoor panels arranged adjacent to each other in the left-right direction; an outdoor panel disposed adjacent to the indoor panel in the left-right direction and disposed on the outdoor side of the indoor panel; a panel space formed between the indoor panel and the outdoor panel; a vertical member for supporting the left and right ends of the outdoor panel; A first inlet port is formed on an outdoor surface of the vertical member facing the outdoors and capable of introducing outside air into the inside of the vertical member; A curtain wall comprising: a second inlet formed on a visible surface of the upright member facing the panel space portion, the second inlet communicating with the first inlet and the panel space portion. (2) The upright member is a first support supporting one end of one of the pair of outdoor-side panels adjacent in the left-right direction; a second upright arranged to support one end of the other of the pair of outdoor-side panels and to form a upright space between the first upright and the second upright, The curtain wall according to (1) above, wherein the upright space is connected to the first inlet and the second inlet. (3) A water return member is provided in the upright space to suppress the inflow of rainwater into the panel space, The curtain wall according to (2) above, wherein the water-repellent member has an arc-shaped guide surface that guides outside air into the interior of the building. (4) A curtain wall as described in (3) above, wherein the water-repellent member has the guide surface on both the left and right sides. (5) A curtain wall described in (3) or (4) above, wherein the water-repellent member is provided in at least a portion of the vertical direction and has an airtight material that seals the space between the water-repellent member and the inner surface of the first upright and the inner surface of the second upright. (6) The water return member is A first water return portion fixed to the first upright and having the guide surface; A second water return portion fixed to the second upright and having the guide surface; A curtain wall according to any one of (3) to (5) above, having a connecting portion that connects the first water return portion and the second water return portion. [Explanation of symbols]

[0060] 4A outdoor glass panel (outdoor panel), 4B indoor glass panel (indoor panel), 5, 5A water return member, 7 airtight material, 11A first upright, 11B second upright, 16, 16A, 16B upright member, 52a guide surface, 55 first water return section, 56 second water return section, 59 connection section, 100, 100A curtain wall, A outside air, S1 panel space section, S10 upright space, T11 first inlet, T13 second inlet

Claims

1. Indoor panels arranged adjacent to each other in the left-right direction; an outdoor panel disposed adjacent to the indoor panel in the left-right direction and disposed on the outdoor side of the indoor panel; a panel space formed between the indoor panel and the outdoor panel; a vertical member for supporting the left and right ends of the outdoor panel; A first inlet is formed on an outdoor surface of the vertical member facing the outdoors, and is capable of introducing outside air into the inside of the vertical member; A curtain wall comprising: a second inlet formed on a facing surface of the upright member facing the panel space portion, the second inlet communicating with the first inlet and the panel space portion.

2. The upright member is a first support supporting one end of one of the pair of outdoor-side panels adjacent in the left-right direction; a second upright arranged to support one end of the other of the pair of outdoor panels and to form a upright space between the first upright and the second upright, The curtain wall according to claim 1 , wherein the vertical space is in communication with the first inlet and the second inlet.

3. A water return member is provided in the upright space to suppress the inflow of rainwater into the panel space, The curtain wall according to claim 2 , wherein the water return member has an arc-shaped guide surface that guides outside air into the interior of the building.

4. The curtain wall according to claim 3 , wherein the water return member has the guide surface on both the left and right sides.

5. A curtain wall as described in claim 3, further comprising an airtight material provided on at least a portion of the water-repellent member in the vertical direction, sealing the space between the water-repellent member and the inner surface of the first upright and the inner surface of the second upright.

6. The water return member is A first water return unit fixed to the first upright and having the guide surface; A second water return portion fixed to the second upright and having the guide surface; The curtain wall according to claim 3, further comprising a connecting portion that connects the first water return portion and the second water return portion.

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