JPH04203051A - Curtain wall having external angle section and reentrant angle section - Google Patents

Abstract

PURPOSE:To simplify fitting work by fitting a panel body with connecting metal fittings, over an external angle mullion and a reentrant angle mullion having a pair of left and right fitting recessed sections. CONSTITUTION:A pair of left and right fitting recessed sections 29 for an external angle mullion 1 are formed roughly in U-shapes with bottom sections 29a arranged roughly in parallel with each other, and room inside and outside opening end sections 29b, 29c inclined at the angle of 90 degrees to be directed to a reentrant angle mullion 2. Then, a pair of left and right fitting recessed sections 39 for the reentrant mullion 2 are formed roughly in U-shapes with bottom sections 39a arranged roughly in parallel with each other, and room inside and outside opening end sections 39b, 39C inclined at the angle of 90 degrees to be directed to the external angle mullion 1. After that, the one end section of a roughly parallelogram-shaped panel body is connected to the fitting recessed section 29 of the external angle mullion 1 with a connecting metal fittings 68. After that, the other end section of the panel body is connected to the fitting recessed section 39 of the reentrant angle mullion 2 with a connecting metal fittings 72. As a result, the external angle and reentrant angle mullions can be easily fitted on a structural body.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a curtain wall having a projecting corner and a large corner.

[Conventional technology]

In a curtain wall where panels such as glass are installed between mullions, adjacent panels are not aligned in a straight line,
For example, a curtain wall having a 90-degree projecting corner and a large corner is known.

For example, as shown in Japanese Unexamined Patent Publication No. 57-9943, a panel body is attached between an out-corner mullion and an in-corner mullion attached to a building frame, and as shown in Utility Model Application No. 63-83308. As shown in the figure, a panel body is attached to a pair of panel attachment parts of a mullion, and a panel body is attached to an adjacent attachment part of a mullion, as shown in Japanese Utility Model Publication No. 58-6972, etc. Are known.

[Problem to be solved by the invention]

In the first method, the mullion and the panel body are attached to the building frame separately, which not only requires a lot of work and positioning work, but also has a shape that follows the outer surface of the building frame or the panel body. - Not applicable to straight building frames.

In the second type, the pair of panel mounting parts of the mullion form the same angle as the angle formed by the adjacent panel bodies, the pair of panel mounting parts are separated by a large distance, and the left and right ends of the adjacent panel bodies are also separated by a large distance. Since the part without the panel body is large, when viewed from the outside, the mullioned part stands out and becomes an unsightly curtain wall.

In the third one, the adjacent part on the opposite side of the mullion where the panel body is attached is attached to the building frame side with a fastener, so
Although it is preferable as a large corner, it becomes difficult to attach a mullion in the case of a protruding corner.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a curtain wall having entrance and exit corners that can solve the above-mentioned problems.

[Means and effects for solving the problem] The mounting recess of the out-corner mullion and the mounting recess of the in-corner mullion constitute a panel body mounting part in the shape of a substantially parallelogram, and both longitudinal end surfaces of the panel body are It is a curtain wall that has a diagonal planar shape with a substantially parallelogram shape, and is connected with both ends of the panel body in the longitudinal direction facing the mounting recesses of the out-corner and in-corner mullions.
Positioning is facilitated, and both ends of the left and right panel bodies in the longitudinal direction can be approached.

〔Example〕

(Outline of curtain wall) As shown in Figures 2 and 3, connecting device B is connected to building frame A.
A frame part consisting of the outside corner mullion 1 and the inside corner mullion 2, which are attached to the outside corner mullion 1 and the inside corner mullion 2, is connected, and the frame part consists of this outside corner mullion], the inside corner mullion 2, and the top and bottom ends 3, 3. A panel 5 such as a heat-reflecting crow is attached to the panel 4 to form a cubic curtain wall having an outer corner 6 and an inner corner 7, and the upper and lower no-moons 3 and 3 and the panel 5 form a halo body. .

In the embodiment, a vertical rib 8 is connected between the upper and lower blinds 3, 3 to divide the frame portion 4 into two, and a panel 5 is attached to each frame portion 4, respectively.

As shown in FIG. 4, the aperture 3 has a shape in which an upper aperture and a lower aperture 10 form a space 11 that is continuous in the horizontal direction and serves as an air intake and exhaust port, and a bird prevention net is installed near the outdoor side of the aperture 11. 12 are provided, and a duct 13 is connected to the indoor side, and the upper and lower edges of the panel 5 are supported by the upper lower opening 0 and the lower upper opening 9, and the left and right vertical sides of the panel 5 are supported. As shown in FIG. Outside the room and the lower part 3
A fireproof panel 15 is attached across the outdoor side of the upper part 9.

(Shape of a mullion) As shown in FIG. 6, an out-corner mullion is made up of an indoor vertical board 20, one side vertical board 21, the other side vertical board 22, and a connecting vertical board 23 to form an indoor hollow part 24 and a room. It has a cross-sectional shape with an outer opening 25, and its -
The side and other side vertical plates 21 and 22 have a hook-shaped piece 26 continuous with the indoor vertical plate 20, a protruding piece 27 continuous with the hook-shaped piece 26, and a support piece 28 continuous with the actual height piece 27, and a mounting recess. 29, and the mounting recess 29 has a substantially U-shape inclined toward the indoor side with respect to the indoor/outdoor opening ends 29b, 29c or the bottom 29a, and extends over the piece-shaped piece 26 and the protruding piece 27. The ridge 14 is engaged, and the ridge 14 and the support piece 2
Indoor/outside vertical sealing material a, b facing glass 5 between 8 and 8
It is sealed.

As shown in FIG. 6, the interior corner mullion 2 has a cross section that includes an indoor vertical board 30, one side vertical board 31, an external vertical board 32, and a connecting vertical board 33, and has an indoor hollow part 34 and an outdoor opening 35. The negative and other side vertical plates 31 and 32 have a base protruding piece 36 that is continuous with the indoor vertical plate 30, and an L-shaped tip protruding piece 37 that is continuous with the middle part of the base protruding piece 36, The support piece 38 continuous with the tip protruding piece 37 has a shape having a mounting recess 39, and the mounting recess 39 has a substantially round shape with indoor and outdoor opening ends 39b and 39c inclined toward the outdoor side with respect to the bottom part 39a. The edge 14 is engaged between the tip of the protruding base piece 36 and the middle part of the protruding tip 37, and the glass 5 faces between the edge 14 and the support piece 38, and can be used both indoors and outdoors. vertical sealing material c,
It is sealed with d.

The mounting recess 29 of the outside corner mullion 1 and the mounting recess 39 of the inside corner mullion 39 are such that the bottoms 29a and 39a are parallel, the indoor opening ends 29b and 39b are in a straight line, and the outdoor opening end 29c
, 39c are opposed to each other so as to form a straight line, forming substantially parallelogram-shaped groove body mounting portions.

(Shape of the mesh 3) As shown in FIG. 7, the upper mesh 9 connects the upper parts of the indoor vertical board 40 and the intermediate vertical board 41 with the upper horizontal board 42.
The upper and lower middle of the outdoor vertical board 43 and the upper part of the outdoor vertical board 43 are connected by an intermediate horizontal board 44, and the upper and lower middle of the outdoor vertical board 43, the lower part of the intermediate vertical board 41, and the lower part of the indoor vertical board 40 are connected by a lower horizontal board 45. A mounting groove 49 has a cross-sectional shape having an inner hollow part 46 and an outdoor hollow part 47, and is integrally provided in the longitudinal direction with hook pieces 48 facing each other on the upper and lower sides of the indoor vertical board 40, and is open to the indoor side. The upper part of the outdoor vertical board 43 is provided with a ridged edge 5 with a hollow rectangular cross section.
) are engaged to form an upward concave portion 51 on the outdoor side, and the lower edge of the panel 5 faces the upward concave portion 51 on the outdoor side and is sealed with indoor/outdoor lower horizontal sealing materials e and f.

The lower section 10 connects the upper, lower, intermediate and lower parts of the indoor vertical board 52 and the upper and lower parts of the intermediate vertical board 53 to an upper horizontal board 54 and a lower horizontal board 55.
An outdoor vertical board 56 is integrally provided at the outdoor end of the upper horizontal board 54 and has an indoor hollow part 57 and an outdoor downward recessed part 58. The upper edge of the nozzle 5 faces the downward recess 58 on the outdoor side, and the indoor/outdoor upper horizontal sealing material g, h. It is sealed.

(Mulled and seamless connection structure) As shown in Fig. 1, both longitudinal ends of the hook pieces 48 and 59 of the mullion 3 are cut off, and both longitudinal ends of the outdoor vertical plate 43° 56 are hook-shaped. The notch part 61 is processed so that both ends in the longitudinal direction of the blind 3 are narrow, and one end in the longitudinal direction faces into the mounting recess 29 of the protruding corner mullion 1, and one end surface 3a in the longitudinal direction faces into the mounting recess 29. The indoor/outside surface of one end in the longitudinal direction of the blind 3 is parallel to the recess 29a of the mounting recess 29 and the indoor/outside opening end of the mounting recess 29. Part 29b.

29c, a vertical cover 62 is attached to one end surface 3a of the pitcher force direction of the hole 3 and the notch 61, so that one longitudinal end of the hole 3 is closed, and the other longitudinal end of the hole 3 is closed. Facing into the mounting recess 29 of the protruding corner mullion 1, the other end surface 3b in the longitudinal direction is parallel to the one end surface 3a in the longitudinal direction, and the open end 3 has a parallelogram shape. 39a, and the other end in the longitudinal direction is parallel to the indoor/outside surfaces, that is, the indoor vertical plates 40, 52 and the notch 6], and is parallel to the indoor/outdoor opening ends 39b, 39c of the mounting recess 39, A vertical cup 62 is attached to the other end surface 3b and the notch 61, and the other end in the longitudinal direction of the blind 3 is closed.

That is, the left and right end surfaces of the panel body are not perpendicular to the interior and exterior surfaces but are oblique to the interior and exterior surfaces, so that they have a planar shape of a slotted panel body or a substantially parallelogram shape, and the mounting recesses of the out-corner and in-corner mullions 1 and 2 are formed. It is disposed within a substantially parallelogram-shaped panel body mounting portion composed of 29 and 39.

The vertical cover 62 is integrally provided with a projection 63 for screw insertion, and the screw tightening surface 63a of the projection 6B is perpendicular to the screw hole 3 to facilitate screw tightening work.

Bolts 69 inserted into the mounting grooves 49 and 60 of the upper and lower blinds 9 and 1o on both sides 68a of the pair of upper and lower connecting fittings 68 attached to the interior vertical board 20 of the projecting corner mullion 1 with bolts 67 are connected by a nut 70, and this connecting metal fitting 68 connects one end in the longitudinal direction of the protruding corner mullion 1, left and right upper blind 9, and lower blind 1o.

A pair of upper and lower connecting fittings 72 attached to the base protruding pieces 36 and 36 of the one side vertical plate 31 and the other side vertical plate 32 of the corner mullion 2 with bolts 71, respectively, are connected to the mounting recesses of the upper and lower blinds 9 and 10. Bolt 73 and nut 74 inserted into grooves 49 and 60
The second connecting fitting 72 connects the inside corner mullion 2 and the other ends of the left and right upper blinds 9 and lower blinds 10 in the longitudinal direction.

As a result, the upper mullion 9 and the lower mullion 1o are connected to the outer corner mullion 1 and the inner corner mullion 2 with an interval in the vertical direction, and there is a space between the upper mullion 9 and the lower mullion 1o. 11.

(Details of the vertical cover 62) As shown in FIGS. 8, 9, and 10, the vertical cover 62
is a vertical plate 75 that is installed across the upper unopened 9 and lower unopened IC1 and has the same width as the interval between the indoor vertical boards 40, 52 and the outdoor vertical boards 43, 56, and one end in the width direction of the vertical board 75. It consists of an L-shaped vertical plate 76 at one end that is continuous at the upper and lower middle of the edge, and a vertical plate 77 at the other end that is continuous at the upper and lower middle at the other end of the vertical plate 75 in the width direction. 10 is closed, and one end plate 76 is used as the indoor vertical board 40 with no upper part 9.
The space between the protruding piece 40a that protrudes further toward the indoor side and the protruding piece 52a that protrudes toward the indoor side from the indoor vertical plate 52 of the lower blind 10 is closed, and the other end vertical plate 77 closes the notch 6. A closing plate 7 attached across the protruding piece 40a and the protruding piece 52a.
A sealing material 77 is provided between 8 and the other end plate 76 to close the interior portions of the upper blind 9 and the lower blind 10.

(Sealing structure of joint between mullion and no-mesh) As shown in Figs. 1 and 6, the vertical sealing material j attached to the hook piece 26 of the protruding corner mullion 1 is attached to the rim 14 and the indoor vertical board of the no-mesh 3. 4
0,52, and the support piece 28 and the notch 61 of the blind 3
A vertical sealing material j is installed between the vertical sealing material j, which is continuous with the outdoor vertical sealing material
That is, a sealing material K is installed between one end surface in the longitudinal direction of the blind 3 and the mounting recess 29 of the protruding corner mullion 1, and as shown in FIG. The lower horizontal plate 55 of the lower part 10 and the raised edge 1 are sealed with sealing material g.
4 is sealed with a sealing material m to create a vertical space C between the mounting recess 29 of the protruding corner mullion 1, the upper blind 9 of the upper blind 3, and the upper blind 9 of the lower blind 3. are composed of each.

It should be noted that since there is a seal between the inside corner mullion 2 and the other end in the longitudinal direction of the open corner 3 as well, the reference numerals are the same and the explanation will be omitted.

(Equivalent pressure structure of the sealing part) As shown in FIGS. 7 and 11, the lower horizontal plate 4 of the upper nozzle 9
5 and the upper horizontal plate 42 are formed with a lower outside air inlet 80 and an upper outside air inlet 81 that open into the indoor hollow part 46, and communicate the upper vertical space C with the space 11 by a sealing material. C is kept at the same pressure as the outside air, and the vertical plate 75 of the vertical cover 62
An outside air inlet 82 is formed in the indoor hollow part 46, and a sealing material communicates the vertical space C below with the space 1 to make the vertical space C have the same pressure as the outside air.

The upper outside air inlet 81 is formed at the end of the upper horizontal plate 42, as shown in FIG. This is to prevent the introduction port 81 from being blocked by the sealing material.

(Drainage structure of the seal part) As shown in Figs. 7 and 11, the sealing material has a stepped shape, with the indoor part being higher and the outdoor part being lower. It flows to the outdoor side along the same line, flows into the outdoor upward recess 51 of the upper nozzle 9, flows into the outdoor hollow part 47 through the upper drain hole 84 formed in the lower horizontal plate 44,
The intake and exhaust ports 11 are connected to the lower drain hole 85 formed in the lower horizontal plate 45.
It falls and is drained.

(Structure of the connecting part of the protruding corner mullion) As shown in Figs. 12 and 13, the upper end of the protruding corner mullion 1 has a stepped shape where the indoor side is higher and the outdoor side is lower. 90, a vertical surface 91, and an outdoor lower upper surface 92, a vertical recess 93 that is continuous with the vertical surface 91 is formed in the - side and other side vertical plates 21 and 22, and this vertical recess 93 is connected to the connecting vertical plate 23. It is flush with the inner surface of the body.

The lower end of the protruding corner mullion 1 has a stepped shape where the indoor side is high and the outdoor side is low, and has an indoor high lower surface 94, a vertical surface 95, and an outdoor low lower surface 96, and the vertical surface 95 is connected. This is the inner surface of the vertical plate 23.

The lower half of the joint sleeve 97 fits into the indoor hollow part 24 of the protruding corner mullion 1, and the upper half protrudes upward, and there is a gap between the outer peripheral surface of the joint sleeve 97 and the indoor hollow part 24. A sealing material 98 of an irregular shape is installed, and the upper half of the joint sleeve 97 is fitted into the indoor hollow part 24 of the upper corner mullion 1, thereby connecting the lower corner mullion 1 and the upper corner mullion. The vertical surfaces 91 and 95 are separated from each other and are connected to each other, and the vertical surfaces 91 and 95 are connected to each other while being separated from each other, and the shape is irregular across the upper surface 90 of the indoor high part, the lower surface 94 of the indoor high part, and the upper part of the vertical surface 95. Seal material 9
9 is attached, and a joint gasket 100 is provided on the outdoor side of the upper and lower protruding corner mullions 1.1 for sealing.

The joint packing 100 has vertical plate-like vertical parts 101 and 1.
, a pair of approximately U-shaped horizontal portions 102° ] 02 integrally provided at both ends of the vertical portion 101 in the width direction. It has a substantially U-shape that touches the outer surface of the tip, and its pair of lateral parts 102, 1
The upper and lower middle of 02 becomes thick and becomes the support part 103, and the support part 103 on the inner surface of the vertical part 101 and the horizontal part 102
A plurality of water returning pieces 104 are integrally provided at the upper part,
The support portion 103 of the pair of lateral portions 102.
The vertical plates 21 and 22 on one side and the other side have a shape between the upper and lower end surfaces of the tip portions and a groove, and a bottle hole 105 is formed in the tip portion.

The lower part of the vertical part 101 of the joint sleeve 100 fits tightly into the vertical recess 93 of the lower protruding corner mullion 1, and forms a space 106 between the lower end surface 101a and the sealing material 98. The upper part of is the vertical surface 91 facing each other.
, 95, and a joint pin 108 inserted into the pin hole 105 of the intermediate horizontal portion 102 is fitted into the pin hole 28a formed in the support piece 28 of the upper and lower protruding corner mullions 1.1. .

As a result, the upper and lower protruding corner mullions 1, 1 are connected by the joint sleeve 97, and the indoor part connected by the joint sleeve 97 is reliably sealed with the sealing material 98, 99, and the joint sleeve The outdoor portion without 97 is secured by the joint packing 100, and rainwater that has entered the joint is drained into the space 106 between the vertical lower end surface 101a of the joint packing 100 and the sealing material 98.
The water flows down into the vertical space C from the vertical recess 93 and is drained from the drain hole.

(Structure of the inner corner mullion connection part) As shown in Figures 14 and 15, the upper end of the inner corner mullion 2 has a stepped shape, with the indoor side being higher and the outdoor side being lower. Top surface 110, vertical surface 111, and outdoor lower part top surface 112
A vertical recess 113 that is continuous with the vertical surface 111 is formed in the - side and other side vertical plates 31 and 32, and this vertical recess 113 is flush with the inner surface of the connecting vertical plate 33.

The lower end of the corner mullion 2 has a stepped shape where the indoor side is higher and the outdoor side is lower, and has an indoor high lower surface 114, a vertical surface 115, and an outdoor lower lower surface 16, and the vertical surface 115 is the inner surface of the connecting vertical plate 33.

The lower half of the joint sleeve 117 fits into the indoor hollow part 34 of the corner mullion 2, and the upper half protrudes upward, and the outer peripheral surface of the joint sleeve 117 and the indoor hollow part 34
An irregularly shaped sealing material 118 is installed between the two, and the upper half of the join sleeve 117 is fitted into the indoor hollow part 34 of the upper corner mullion 2 to connect the lower corner mullion 2 and the upper corner mullion 2. Inner corner mullion 2 has a top and bottom surface separated from each other, and a vertical surface 111.1
15 are connected at a distance from each other, and a sealing material 119 of an irregular shape is installed across the upper surface 110 of the indoor side height, the lower surface 114 of the indoor side height, and the upper part of the vertical surface 115.
A joint pin 20 is provided at the outdoor portion of the housing 2 for sealing.

The joint packing 120 includes a vertical plate-shaped vertical portion 121;
A pair of substantially U-shaped horizontal portions 122° 122 integrally provided at both ends of the vertical portion 121 in the width direction connect the vertical plate 33 in a planar shape, and the ends of the vertical plates 31 and 32 on the negative side and the other side. It has a substantially U-shape that touches the outer surface of the part, and has a thick wall at the upper and lower middle of the pair of horizontal parts 122 to form a support part 123, and the vertical part 12
A plurality of water return pieces 124 are integrally provided above the supporting portion 123 on the inner surface of the inner surface of the lateral portion 1 and the horizontal portion] 22, and the supporting portions 123 of the pair of horizontal portions 122, 122 are attached to one side and the other side of the inner corner mullion 2. It has a shape that is between the upper and lower end surfaces of the tip portions of the side vertical plates 31 and 32, and a pin hole 125 is formed in the tip portion.

The lower part of the vertical part 121 of the joint packing 120 is tightly fitted into the vertical recess 113 of the lower corner mullion 2, and forms a space 126 between the lower end surface 121a and the sealing material]18, and the vertical part The upper part of 121 fits tightly into the space 127 between the opposing vertical surfaces 111 and 115, and the support part 123
The joint pin 128 inserted into the pin hole 125 of the pin hole 38a formed in the support piece 38 of the upper and lower corner mullions 2.2
is fitted.

As a result, the upper and lower corner mullions 2, 2 are connected by the joint sleeve 117, and the indoor part connected by the joint sleeve 117 is reliably sealed with the sealing materials 118, 119, and the joint sleeve The outdoor portion without the 1-nia is reliably sealed with the joint packing 120, and the rainwater that has entered the joint is removed from the vertical lower end surface 121a of the joint packing 120 and the sealing material 118.
It flows into the space 126 between the rain gutter 12 from the vertical recess 113.
9, it flows down into the vertical space C and is drained from the drain hole.

(Modified example) In the above embodiments, the panel 5 is attached between the upper and lower open spaces 3.3 to form a panel body, or the panel is attached within a frame body in which the upper frame, lower frame, left and right vertical frames are framed in a rectangular shape. It is also possible to make a unit type panel body by slanting the end faces of the left and right vertical frames so that they are parallel to each other.

〔Effect of the invention〕

Metal fittings 68.7 for connecting the outer corner mullion 1, the inner corner mullion 2 and the panel body
Since they are connected by 2, all you have to do is attach the exit and entry corner mullions 1゜2 to the building frame.The installation is not only easy, but also the positioning of both is easy, and it also fits the shape of the outside surface of the building frame. It can be installed even in a straight line without any restrictions.

Mounting recess 29 of the outer corner mullion 1 and mounting recess 39 of the inner corner mullion 2
At the indoor/outdoor opening end, the mounting recess 29 and the mounting recess 39, which are inclined and face each other with respect to the bottom wall, have a substantially parallelogram shape, and both end surfaces of the panel body are inclined and have a substantially parallelogram shape. Because of this, the pair of mounting recesses 29 for each mullion and the three bottoms 29a and 39a can be brought close to each other in parallel, and since the left and right ends of the adjacent panel bodies are close to each other, the parts that are not covered by the panel body are small and can be placed outside. When viewed from above, the mullioned portions do not stand out too much, resulting in a good-looking curtain wall.

Since the indoor portions of the out-corner and in-corner mullions 1 and 2 are attached to the building frame, the out-corner and in-corner mullions 1 and 2 can be easily attached to the building frame.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view of an entry/exit corner mullion and a seamless connection part, and FIGS. 2 and 3 are a schematic front view and a cross-sectional view of a mullion-type curtain wall. , Figures 4 and 5 are partial detailed longitudinal cross-sectional views and cross-sectional views, Figure 6 is a cross-sectional view of the entrance/exit corner mullions and the sealing part of the panel, and Figure 7 is a detailed vertical cross-sectional view of the closed portion. , Figures 8, 9, and 10 are perspective views of one side, the other side, and an exploded perspective view of the vertical cover attachment part. Figure 11 is a perspective view showing the drainage structure. Figures 12 and 13 are perspective views of the drainage structure. FIGS. 14 and 15 are a vertical cross-sectional view and an exploded perspective view of the corner mullion joint. FIGS. 14 and 15 are a longitudinal cross-sectional view and an exploded perspective view of the corner mullion joint. 1 is an out corner mullion, 2 is an in corner mullion, 29 is a mounting recess, 29a
29b, 29c are indoor/outdoor opening ends, 39 is a mounting recess, 39a is a bottom, and 39b. 39c is the indoor/outdoor opening end, and 68.72 is the connecting fitting. Applicant Y.K. Architectural
Brodataf Co., Ltd. Agent Patent Attorney Masaaki Yonehara Patent Attorney Tadashi Hamamoto

Claims (1)

[Claims] In the curtain wall having an entrance/exit corner portion in which a panel body is attached over an exit corner mullion 1 having a pair of left and right mounting recesses 29, 29 and an entrance corner mullion 2 having a pair of left and right mounting recesses 39, 39, the above-mentioned A pair of left and right mounting recesses 2 of the protruding corner mullion 1
9 and 29 are formed into a substantially U-shape with a bottom portion 29a that is substantially parallel to each other and indoor and outdoor opening ends 29b and 29c that are inclined at an angle different from 90 degrees toward the entrance mullion 2. A pair of left and right mounting recesses 39, 39 of the corner mullion 2 are formed with a bottom portion 39a that is substantially parallel to each other and indoor/outdoor opening ends 39b, 39c that are inclined at an angle different from 90 degrees toward the corner mullion 1. The mounting recesses 29 and 39 facing each other in a substantially U-shape constitute a panel body mounting portion having a substantially parallelogram shape. One longitudinal end of the panel body faces the mounting recess 29 of the out corner mullion 1 and is connected with a connecting fitting 68, and the other longitudinal end of the panel body faces the mounting recess 29 of the inner corner mullion 2. A curtain wall having entrance/exit corners facing 39 and connected by connecting fittings 72.