Curtain wall

Abstract

To provide a curtain wall capable of generating power by sunlight while reducing irradiation of the sunlight to the indoor side in a cavity formed between an outdoor side panel and an indoor side panel.SOLUTION: In a curtain wall 1, a cavity 8 is formed between an outdoor-side panel 2A and an indoor-side panel 2C. The curtain wall 1 is provided with a fin 21 that is disposed in the cavity 8 and shields sunlight. The fin 21 has a solar cell panel 23 provided on a receiving surface part 22 that receives sunlight.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a curtain wall that forms a cavity between an outdoor panel and an indoor panel.

Background Art

[0002] Conventionally, a curtain wall that forms a cavity between an outdoor panel and an indoor panel is known. In such a curtain wall, sunlight passes through the outdoor panel and the indoor panel, and the indoor side of the curtain wall is irradiated with sunlight. Therefore, measures against indoor solar radiation may be required. On the other hand, conventionally, a solar cell blind including a plurality of slats provided with solar cells is known, which is disposed on the indoor side of the glass panel of the curtain wall (see Patent Document 1).

[0003] In the conventional solar cell blind described in Patent Document 1, sunlight is blocked by a plurality of slats that are aligned in the closed position. In addition, a plurality of slats can generate electricity by the solar cells of each slat while dealing with indoor solar radiation. However, in the conventional solar cell blind, although the irradiation of sunlight to the indoor side can be reduced, a plurality of slats are disposed on the indoor side of the curtain wall, and there is room for improvement from the viewpoint of effectively utilizing the space on the indoor side of the curtain wall. In addition, there is also a concern that a person may collide with a slat provided with a solar cell on the indoor side of the curtain wall.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide a curtain wall capable of generating electricity by sunlight while reducing the irradiation of sunlight to the indoor side in a cavity formed between an outdoor panel and an indoor panel.

Means for Solving the Problems

[0006] The present invention is a curtain wall that forms a cavity between an outdoor panel and an indoor panel, comprising fins disposed in the cavity to block sunlight, wherein the fins have solar cell panels provided on light-receiving surfaces that receive sunlight.

Effects of the Invention

[0007] According to the present invention, it is possible to provide a curtain wall capable of generating electricity by sunlight while reducing the irradiation of sunlight to the indoor side in a cavity formed between an outdoor panel and an indoor panel.

Brief Description of the Drawings

[0008]

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Embodiments for Carrying Out the Invention

[0009] An embodiment of the curtain wall of the present invention will be described with reference to the drawings. The curtain wall of this embodiment is installed on the outer wall of a building and constitutes a part of the solar power generation system of the building. The solar power generation system is installed together with the curtain wall and generates electricity by sunlight in the curtain wall. Also, the curtain wall is an outer wall of the building and is installed between the indoor (inside) and outdoor (outside) of the building to form the outer wall of the building. Hereinafter, a plurality of embodiments of the curtain wall will be described in order.

[0010] (First Embodiment) FIG. 1 is a front view showing the curtain wall 1 of the first embodiment, showing a part of the curtain wall 1 installed in the building 10 as viewed from the outdoor side. FIG. 2 is a longitudinal sectional view showing the curtain wall 1 of the first embodiment, showing the curtain wall 1 and a part of the building 10 cut along a plane including the vertical direction R and the indoor-outdoor direction T. FIG. 3 is a cross-sectional view showing the curtain wall 1 of the first embodiment, showing the curtain wall 1 cut along a plane including the left-right direction S and the indoor-outdoor direction T.

[0011] When the curtain wall 1 installed in the building 10 is viewed from the front, the vertical direction is the vertical direction R, and the left-right direction is the left-right direction S. In FIG. 1, the vertical direction R is the vertical direction, and the left-right direction S is the horizontal direction. The indoor-outdoor direction T is the indoor-outdoor direction (indoor-outdoor direction) in the curtain wall 1 installed in the building 10. Also, the indoor-outdoor direction T is the front-rear direction (depth direction) and the thickness direction of the curtain wall 1 when the curtain wall 1 installed in the building 10 is viewed from the front. In FIG. 1, it is the horizontal direction orthogonal to the left-right direction S. Thus, the directions related to the curtain wall 1 are specified in the state of being installed in the building 10. Also, regarding the curtain wall 1, the indoor side and the outdoor side are the indoor side and the outdoor side in the state of being installed in the building 10.

[0012] As shown in the figure, the building 10 includes a curtain wall 1, an outer wall 11, a frame 12, a boundary portion 13 between the upper and lower floors of the building 10, and a floor portion 14 of each floor of the building 10. The frame 12, the boundary portion 13, and the floor portion 14 of the building 10 are located on the indoor side of the curtain wall 1. The frame 12 is a mounting body to which the curtain wall 1 is attached. The boundary portion 13 is a portion located at the boundary between the upper floor and the lower floor of the building 10 and is located between the floor portion 14 of the upper floor and the floor portion 14 of the lower floor. The floor portion 14 is a usable portion indoors in the building 10 and is located between the upper and lower boundary portions 13.

[0013] The curtain wall 1 includes a plurality of curtain wall units 2 arranged side by side on the building 10. The curtain wall unit 2 is a window unit that constitutes the curtain wall 1 and is pre-assembled before installation on the building 10. Also, the plurality of curtain wall units 2 are combined with each other to constitute a part of the curtain wall 1. The curtain wall units 2 are installed side by side in the vertical direction R and the horizontal direction S on the outer wall 11 of the building 10 and are connected to adjacent curtain wall units 2 respectively.

[0014] The curtain wall 1 and the curtain wall unit 2 are installed at the location of the outer wall 11 of the building 10 and constitute the outer wall 11 of the building 10. Also, the curtain wall 1 and the curtain wall unit 2 are arranged on the outdoor side of the building body 12 of the building 10 and are attached to the building body 12 of the building 10. In that state, the curtain wall 1 and the curtain wall unit 2 are located between the boundary portion 13 of the building 10 and the outdoor space 15, and between the floor portion 14 of the building 10 and the outdoor space 15, and are in contact with the outside air. The outdoor space 15 is the outdoor space of the building 10, the curtain wall 1, and the curtain wall unit 2, and the outside air is the air in the outdoor space 15.

[0015] The curtain wall 1 and the curtain wall unit 2 include a spandrel part 1A and a vision part 1B adjacent to each other in the vertical direction R. The spandrel part 1A and the vision part 1B are provided in the curtain wall unit 2 side by side vertically, are adjacent to each other in each curtain wall unit 2, and are adjacent to each other between the curtain wall units 2 adjacent in the vertical direction R. Also, the spandrel part 1A and the vision part 1B are alternately provided in the curtain wall 1 in the vertical direction R and are provided side by side in the horizontal direction S respectively. The spandrel part 1A is the waist portion located on the outdoor side of the boundary portion 13 of the building 10, and the vision part 1B is the window portion located on the outdoor side of the floor portion 14 of the building 10.

[0016] The spandrel part 1A is the upper part of the curtain wall unit 2, and the vision part 1B is the lower part of the curtain wall unit 2. The spandrel part 1A is located between the boundary part 13 (the indoor space 13A of the boundary part 13) of the building 10 and the outdoor space 15 in the indoor-outdoor direction T and faces the boundary part 13. The vision part 1B is located between the floor part 14 (the indoor space 14A of the floor part 14) of the building 10 and the outdoor space 15 in the indoor-outdoor direction T and faces the floor part 14. Thus, the curtain wall 1 and the curtain wall unit 2 are installed at the spandrel part 1A between the outdoor space 15 and the indoor space 13A of the boundary part 13 of the building 10, and at the vision part 1B between the outdoor space 15 and the indoor space 14A of the floor part 14 of the building 10.

[0017] The curtain wall 1 is a double-skin curtain wall having a double-skin structure, and the curtain wall unit 2 is a double-skin curtain wall unit having a double-skin structure. The curtain wall unit 2 includes a frame body 3 that partitions the spandrel part 1A and the vision part 1B, and three panels 2A, 2B, 2C (outdoor side panel 2A, first indoor side panel 2B, second indoor side panel 2C) held by the frame body 3. The frame body 3 is a rectangular opening frame, which is arranged on the outdoor side of the building body 12 of the building 10 and is attached to the building body 12 of the building 10. The frame bodies 3 of the plurality of curtain wall units 2 are arranged side by side in the vertical direction R and the horizontal direction S and are connected to each other with the frame bodies 3 of the adjacent curtain wall units 2.

[0018] The frame body 3 has four frames 4 to 6 (upper frame 4, lower frame 5, a pair of vertical frames 6) combined with each other and a jointless part 7, and the frames 4 to 6 form a rectangular opening 3A. The upper frame 4, the lower frame 5, and the jointless part 7 are horizontal members extending in the horizontal direction (horizontal direction S), and the pair of vertical frames 6 are vertical members extending in the vertical direction (vertical direction R). The upper frame 4 and the lower frame 5 are located at the upper and lower parts of the frame body 3, and the pair of vertical frames 6 are located at the left and right side parts of the frame body 3. The jointless part 7 is an intermediate frame located in the middle of the frame body 3 in the vertical direction R, located between the upper frame 4 and the lower frame 5, and connected to the pair of vertical frames 6.

[0019] The upper frame 4, the lower frame 5, and the ends of the left and right vertical frames 6 are connected to each other, and both ends of the blind 7 are connected to the left and right vertical frames 6, so that the frames 4 to 6 and the blind 7 are framed. The blind 7 is installed between a pair of left and right vertical frames 6 and divides the inside (opening 3A) of the frame body 3 vertically. The frames 4 to 6 and the blind 7 of the frame body 3 are frame members (frame constituting members) that are each made of a metal (for example, aluminum alloy) profile (extruded profile) formed by extrusion molding. The longitudinal direction of each of the upper frame 4, the lower frame 5, and the blind 7 is the left-right direction S, and the longitudinal direction of the vertical frame 6 is the up-down direction R.

[0020] The panels 2A, 2B, and 2C are rectangular panel materials (face materials) and are arranged inside the frame body 3 (opening 3A). The outdoor panel 2A is an outer skin (outer panel) arranged on the outdoor side at the opening 3A of the frame body 3, and the two indoor panels 2B and 2C are inner skins (inner panels) arranged on the indoor side at the opening 3A of the frame body 3. The outdoor panel 2A is provided across the spandrel part 1A and the vision part 1B and is arranged on the outdoor side of the indoor panels 2B and 2C. The first indoor panel 2B is an upper indoor panel located above the second indoor panel 2C and is provided at the spandrel part 1A. The second indoor panel 2C is a lower indoor panel located below the first indoor panel 2B and is provided at the vision part 1B.

[0021] The indoor panels 2B and 2C are adjacent to each other in the up-down direction R and are arranged on the indoor side of the outdoor panel 2A. The outdoor panel 2A and the first indoor panel 2B are fixed panels and are fixed to the opening 3A of the frame body 3. The outdoor panel 2A is a transparent glass panel (for example, plate glass, laminated glass, or composite glass), and the first indoor panel 2B is a non-glass panel (for example, a fireproof panel). The second indoor panel 2C is an inner glass body with a transparent glass panel that can be opened and closed with respect to the outdoor panel 2A which is an outer glass body, and is connected to the frame body 3 so as to be openable and closable and opens toward the indoor side.

[0022] The outdoor panel 2A is surrounded by the frames 4 to 6 of the frame body 3 and is attached to the frames 4 to 6. The first indoor panel 2B is in the spandrel part 1A, surrounded by the upper frame 4, the left and right vertical frames 6, and the blind 7, and is attached to the upper frame 4, the left and right vertical frames 6, and the blind 7. The second indoor panel 2C is in the vision part 1B, surrounded by the lower frame 5, the left and right vertical frames 6, and the blind 7, and is attached to the lower frame 5, the left and right vertical frames 6, and the blind 7. The blind 7 is arranged between the spandrel part 1A and the vision part 1B, and between the first indoor panel 2B and the second indoor panel 2C.

[0023] The curtain wall 1 and the curtain wall unit 2 are provided with a cavity 8 formed in the opening 3A of the frame body 3. The cavity 8 is a space part (void part) formed inside the frame body 3 and is formed between the outdoor panel 2A and the indoor panels 2B and 2C. The outdoor panel 2A and the indoor panels 2B and 2C are arranged at a distance in the indoor-outdoor direction T and face each other with the cavity 8 sandwiched between them in the indoor-outdoor direction T. The cavity 8 is located on the indoor side of the outdoor panel 2A and on the outdoor side of the indoor panels 2B and 2C, is surrounded by the frame body 3, and is formed across the spandrel part 1A and the vision part 1B.

[0024] The outdoor panel 2A is in the spandrel part 1A and the vision part 1B, is located on the outdoor side of the cavity 8, and is arranged between the cavity 8 and the outdoor space 15. The first indoor panel 2B is in the spandrel part 1A, is located on the indoor side of the cavity 8, and is arranged between the cavity 8 and the boundary part 13 (indoor space 13A). The second indoor panel 2C is in the vision part 1B, is located on the indoor side of the cavity 8, and is arranged between the cavity 8 and the floor part 14 (indoor space 14A). By opening the second indoor panel 2C, the cavity 8 is opened toward the indoor side (floor part 14).

[0025] The cavity 8 is surrounded by the upper frame 4, the lower frame 5, and the left and right vertical frames 6 of the frame body 3 in the up, down, left, and right directions. The upper frame 4 is located above the cavity 8, and the lower frame 5 is located below the cavity 8. The left and right vertical frames 6 are located on the left and right sides of the cavity 8. The blind 7 is spaced apart from the outdoor panel 2A toward the indoor side and is located on the indoor side of the outdoor panel 2A and the cavity 8.

[0026] The curtain wall 1 and the curtain wall unit 2 are provided with louvers 20 that block sunlight in the cavity 8. The louvers 20 are vertical louvers extending in the vertical direction and have a plurality of fins 21 that are light-shielding materials for blocking sunlight. The louvers 20 and the fins 21 are arranged between the outdoor panel 2A and the indoor panels 2B, 2C, and in the cavity 8, They are housed inside the cavity 8 and installed between the outdoor panel 2A and the indoor panels 2B, 2C. In FIGS. 1 and 3, only one fin 21 (here, 11 fins 21) provided in each curtain wall unit 2 is labeled, and the labeling of the other fins 21 is omitted.

[0027] The louvers 20 and the plurality of fins 21 are provided in the vision part 1B and the spandrel part 1A and are arranged over the entire vertical direction R of the cavity 8. The fins 21 are vertical fins extending in the vertical direction and are made of a metal profile (extruded profile) (for example, made of an aluminum alloy) formed by extrusion molding. The louvers 20 block sunlight received by the fins 21 in the cavity 8.

[0028] The plurality of fins 21 are arranged at intervals in the left - right direction S inside the cavity 8 and are separated from each other in the left - right direction S. The fins 21 are the louver blades (vanes) that constitute the louver 20 and are arranged on the indoor side of the outdoor panel 2A and on the outdoor sides of the indoor panels 2B and 2C. The fins 21 block a part of the sunlight irradiated toward the indoor panels 2B and 2C inside the cavity 8 and on the outdoor sides of the indoor panels 2B and 2C, and reduce the solar radiation on the floor portion 14, which is a location on the indoor side of the second indoor panel 2C.

[0029] The fin 21 has a light - receiving surface portion 22 that receives sunlight and a solar cell panel 23 (solar panel) provided on the light - receiving surface portion 22. The light - receiving surface portion 22 is the irradiated surface portion of the fin 21 irradiated with sunlight, and the solar cell panel 23 is provided on at least a part (the whole or a part) of the light - receiving surface portion 22. Here, the light - receiving surface portion 22 is the left - and - right side surface portions of the fin 21. The solar cell panels 23 are provided on the respective left - and - right light - receiving surface portions 22 and are irradiated with sunlight. The left - and - right solar cell panels 23 are provided on the left - and - right lateral sides of the fin 21, and the left - and - right light - receiving surface portions 22 and the solar cell panels 23 are arranged toward the left - and - right sides of the fin 21.

[0030] In the cavity 8, the fin 21 receives sunlight by the light - receiving surface portion 22 and the solar cell panel 23 and blocks the sunlight heading toward the indoor panels 2B and 2C. The solar cell panel 23 is a power - generating device (solar power generation panel) that receives sunlight and generates electricity, converting solar energy into electrical energy. Also, the solar cell panel 23 is a film - type solar cell panel (solar cell film) or a coating - type solar cell panel and is made of, for example, a perovskite solar cell.

[0031] FIG. 4 is a cross - sectional view showing the curtain wall 1 of the first embodiment, and shows the fin 21 whose posture has changed with respect to the fin 21 of the curtain wall 1 shown in FIG. 3. As shown in FIGS. 3 and 4, the fin 21 is rotatable, and by rotation, the orientation of the receiving surface portion 22 and the solar cell panel 23 can be changed. In FIG. 3, the fin 21, the receiving surface portion 22, and the solar cell panel 23 are arranged along the indoor-outdoor direction T. In FIG. 4, the fin 21, the receiving surface portion 22, and the solar cell panel 23 are arranged to be inclined in the left-right direction S toward the outdoor side with respect to the indoor-outdoor direction T.

[0032] The position of the sun is represented by altitude (elevation angle) and azimuth (azimuth angle), and the altitude and azimuth of the sun gradually change over time. In contrast, the fin 21 rotates to a position (posture) that blocks sunlight in response to a change in altitude or azimuth representing the position of the sun, thereby changing the orientation of the receiving surface portion 22 and the solar cell panel 23. The fin 21 rotates gradually, changing the orientation of the solar cell panel 23 while blocking sunlight, and generating electricity by the solar cell panel 23.

[0033] FIG. 5 is a cross-sectional view showing the curtain wall 1 of the first embodiment cut along the line X1-X1 in FIG. 1, showing two curtain wall units 2 adjacent to each other in the left-right direction S. In FIG. 5, the fin 21 rotated with respect to the fin 21 shown by the solid line is shown by the two-dot chain line. FIG. 6 is a longitudinal sectional view showing the curtain wall 1 of the first embodiment cut along the line X2-X2 in FIG. 1, showing two curtain wall units 2 adjacent to each other in the up-down direction R. FIG. 7 is a longitudinal sectional view showing an enlarged part of the curtain wall 1 of the first embodiment in FIG. 6. FIG. 8 is a longitudinal sectional view showing the curtain wall 1 of the first embodiment cut along the line X3-X3 in FIG. 7.

[0034] As shown in the figure, the fin 21 extends in the vertical direction R in the cavity 8 between the upper frame 4 and the lower frame 5, and is connected to each of the upper frame 4 and the lower frame 5, spanning across the upper frame 4 and the lower frame 5. The upper frame 4 is located above the fin 21 and the upper end portion of the fin 21, and the lower frame 5 is located below the fin 21 and the lower end portion of the fin 21. The solar cell panel 23 extends in the longitudinal direction (vertical direction R) of the fin 21 between the end portions on both sides in the longitudinal direction of the fin 21. Here, the solar cell panel 23 is a deformable film-type solar cell panel or a coating-type solar cell panel, and is deformed according to the shape of the receiving surface portion 22 of the fin 21 and is mounted on the receiving surface portion 22.

[0035] The lower frame 5 has a hollow portion 5A and a guide portion 5B located below the fin 21 and the cavity 8. The hollow portion 5A and the guide portion 5B are provided at a position between the outdoor panel A and the indoor panels 2B and 2C in the indoor-outdoor direction T, and face the fin 21 in the vertical direction R. The hollow portion 5A is an intermediate hollow portion located in the middle of the lower frame 5 in the indoor-outdoor direction T, is formed in a hollow shape, and extends in the longitudinal direction of the lower frame 5. The guide portion 5B is a groove portion (guide groove) formed in a groove shape (concave shape) and extends in the longitudinal direction of the lower frame 5. Also, the guide portion 5B is located above the hollow portion 5A, is located between the hollow portion 5A and the cavity 8, and is open toward the cavity 8. Here, the guide portion 5B is open upward where the fin 21 is located.

[0036] The curtain wall 1 has a support 30 that rotatably supports the fins 21, and a rotating device 40 that rotates the fins 21. The support 30 connects the fins 21 to the frame 3 in a state where the fins 21 are rotatably supported. Here, the support 30 is provided on the upper frame 4 and the lower frame 5 of the frame 3 and is disposed on both sides in the longitudinal direction of the fins 21. The upper and lower supports 30 are fixed to the upper frame 4 and the lower frame 5 respectively, and connect the fins 21 to the upper frame 4 and the lower frame 5. Among the upper and lower supports 30, the upper support 30 protrudes downward from the upper frame 4, and the lower support 30 among the upper and lower supports 30 protrudes upward from the lower frame 5. The fins 21 are disposed between the upper and lower supports 30 and are rotatably attached to the upper and lower supports 30. Both end portions (upper and lower end portions) of the fins 21 are rotatably supported by the supports 30 respectively.

[0037] The support 30 has a shaft member 31 fixed to the upper frame 4 and the lower frame 5, and a bearing 32 fixed to the fins 21. The shaft member 31 is a longitudinal shaft member extending in the longitudinal direction and is attached to the bearing 32. The fins 21 are rotatably supported by the shaft member 31 via the bearing 32 and rotate about the shaft member 31. The rotation axis of the fins 21 is the rotation center (axis center) of the fins 21 and extends in the longitudinal direction (here, the vertical direction R) through the center of the shaft member 31. The fins 21 are rotatably supported by the support 30 about a rotation axis (longitudinal axis) extending in the longitudinal direction so as to be rotatable left and right.

[0038] The rotating device 40 has a motor 41 as a drive source, a conversion mechanism 42 that converts the rotational motion of the motor 41 into a linear motion, a moving member 43 that is movable in the longitudinal direction of the lower frame 5, a mounting member 44 to which the moving member 43 is attached, and a connecting member 45 provided on the fins 21. The motor 41 is an electric motor (for example, a stepping motor) that operates by electric power, is housed inside the lower frame 5 (here, inside the hollow portion 5A), and is attached to the lower frame 5. The conversion mechanism 42 is housed inside the lower frame 5 (here, inside the hollow portion 2A and the guide portion 5B) and moves the moving member 43 in conjunction with the rotation of the motor 41.

[0039] The conversion mechanism 42 is a rack and pinion mechanism, and has a pinion 42A (gear) attached to the rotating shaft of the motor 41 and a rack 42B (plate-shaped gear) meshing with the pinion 42A. The rack 42B extends in the longitudinal direction of the lower frame 5, is attached to the attachment member 44, and is connected to the moving member 43 via the attachment member 44. When the pinion 42A rotates by the motor 41, the rack 42B moves in the longitudinal direction of the lower frame 5 in conjunction with the rotation of the pinion 42A. The conversion mechanism 42 causes the rack 42B, the attachment member 44, and the moving member 43 to move in the longitudinal direction of the lower frame 5 in conjunction with the rotation of the motor 41 by the pinion 42A.

[0040] The moving member 43 is a movable member that moves by sliding and extends in the longitudinal direction of the lower frame 5. Further, the moving member 43 is disposed in the guide portion 5B of the lower frame 5 and slides along the guide portion 5B. The moving member 43 is guided in the longitudinal direction of the lower frame 5 by the guide portion 5B and moves in the longitudinal direction of the lower frame 5 together with the attachment member 44 and the rack 42B. The rack 42B and the attachment member 44 are disposed from the inside of the hollow portion 5A to the guide portion 5B through a through hole formed in the lower frame 5 and move in the longitudinal direction of the lower frame 5 within the through hole.

[0041] The moving member 43 and the connecting member 45 are located on the lower side (the lower frame 5 side) of the fin 21. The connecting member 45 is a bracket fixed to the fin 21, protrudes from the fin 21 toward the moving member 43, and extends from the fin 21 to the moving member 43. The connecting member 45 connects the fin 21 to the moving member 43 and rotates together with the fin 21. The moving member 43 rotates the connecting member 45, and the connecting member 45 rotates the fin 21. The fin 21 rotates integrally with the connecting member 45 in conjunction with the movement of the moving member 43.

[0042] The moving member 43 has a connecting protrusion 43A that connects the connecting member 45 to the moving member 43. The connecting protrusion 43A rotates the connecting member 45 together with the fin 21. The connecting member 45 has a long hole portion 45A to which the connecting protrusion 43A is movably connected. The connecting protrusion 43A is movably disposed inside the long hole portion 45A and is connected to the long hole portion 45A so that its position inside the long hole portion 45A can be changed. When the moving member 43 moves in the longitudinal direction of the lower frame 5, the connecting protrusion 43A moves in the longitudinal direction of the lower frame 5 together with the moving member 43, and while changing its position inside the long hole portion 45A in the longitudinal direction of the long hole portion 45A, rotates the connecting member 45 and the fin 21.

[0043] The rotating device 40 rotates the pinion 42A in one direction and the other direction by the motor 41, moves the rack 42B, the mounting member 44, the moving member 43, and the connecting protrusion 43A to one side and the other side (right side and left side) in the longitudinal direction of the lower frame 5, and rotates the connecting member 45 and the fin 21 left and right by the connecting protrusion 43A. The conversion mechanism 42 (pinion 42A, rack 42B), the mounting member 44, the moving member 43, the connecting protrusion 43A, and the connecting member 45 constitute a transmission mechanism that transmits the driving force of the motor 41 to the fin 21 to rotate the fin 21. The rotating device 40 rotates the fin 21 supported by the support 30 by the motor 41 and the transmission mechanism, and changes the orientation of the receiving surface portion 22 of the fin 21 and the solar panel 23.

[0044] FIG. 9 is a block diagram showing the configuration of a solar power generation system including the curtain wall 1 of the first embodiment. As shown in the figure, the electricity generated by the solar cell panel 23 of the fin 21 is sent to the storage battery 51 via the power conditioner 50 and stored in the storage battery 51. The power conditioner 50 is a hybrid type power conditioner and sends the DC electric current generated by the solar cell panel 23 to the storage battery 51. The electricity stored in the storage battery 51 is supplied to the distribution board 52 and the motor 41 of the rotating device 40 via the power conditioner 50. The electricity supplied from the storage battery 51 is a DC current, which is converted from DC to AC by the power conditioner 50 and supplied to the motor 41 and the facilities of the building 10 using electricity via the distribution board 52.

[0045] The rotating device 40 including the motor 41 operates by the electricity (power) supplied from the storage battery 51 to rotate the fin 21. The control device 53 is connected to the rotating device 40 and controls the rotating device 40. At this time, the control device 53 controls the motor 41 of the rotating device 40 to rotate the motor 41. The motor 41 rotates by the electricity supplied from the storage battery 51. The control device 53 controls the rotating device 40 to rotate the fin 21 by the rotating device 40, and while blocking the sunlight by the fin 21, the receiving surface portion 22 of the fin 21 and the orientation of the solar cell panel 23 are changed to follow the altitude or azimuth of the sun representing the position of the sun. Thereby, the orientation of the solar cell panel 23 changes to the orientation corresponding to the altitude or azimuth of the sun, and the solar cell panel 23 is oriented in the direction corresponding to the altitude or azimuth of the sun.

[0046] In this way, the control device 53 follows the change in the altitude or azimuth of the sun to rotate the receiving surface portion 22 of the fin 21 and the solar cell panel 23 and change the orientation of the receiving surface portion 22 of the fin 21 and the solar cell panel 23. The position where the fin 21 is rotated is a position where sunlight can be blocked and a position where sunlight is irradiated on the solar cell panel 23 (a position where power generation by the solar cell panel 23 is possible), and is set so that the power generation efficiency by the solar cell panel 23 becomes higher. By the rotation of the fin 21, the orientation of the solar cell panel 23 changes to the orientation corresponding to the altitude or azimuth of the sun, and the solar cell panel 23 is oriented in the direction where sunlight is irradiated.

[0047] A sunlight sensor 54 is connected to the control device 53. The sunlight sensor 54 is a detector that detects the altitude and azimuth representing the position of the sun. For example, it is installed on the frame 3 or the building 10 and transmits the detection results of the altitude and azimuth of the sun to the control device 53. The control device 53 receives the detection results of the altitude and azimuth of the sun from the sunlight sensor 54 and acquires the data of the altitude and azimuth of the sun. Based on the altitude or azimuth of the sun detected by the sunlight sensor 54, the control device 53 controls the rotating device 40 (motor 41) to rotate the fin 21 by the rotating device 40, and changes the orientation of the solar panel 23 to follow the altitude or azimuth of the sun detected by the sunlight sensor 54.

[0048] Here, the sunlight sensor 54 is installed on the rooftop portion of the building 10. Also, based on the azimuth of the sun, the control device 53 controls the rotating device 40 to rotate the fin 21 by the rotating device 40, and changes the orientation of the solar panel 23 to follow the azimuth of the sun. The rotating device 40 is controlled by the control device 53 to rotate the fin 21 left and right, and changes the orientation of the solar panel 23 to follow the azimuth of the sun and change left and right.

[0049] The azimuth of the sun changes from one side to the other side in the left - right direction S with respect to the fin 21. While the azimuth of the sun is located on one side in the left - right direction S with respect to the fin 21, by the rotating device 40, the solar panel 23 on one side in the left - right direction S among the left and right solar panels 23 of the fin 21 is arranged facing the sun. In that state, by the rotating device 40, the fin 21 rotates toward the other side in the left - right direction S following the change of the azimuth of the sun toward the other side in the left - right direction S, and the orientation of the solar panel 23 on one side changes toward the other side in the left - right direction S following the change of the azimuth of the sun toward the other side in the left - right direction S as the fin 21 rotates.

[0050] While the azimuth of the sun is located on the other side of the left - right direction S with respect to the fin 21, the rotating device 40 arranges the solar cell panel 23 on the other side of the left - right direction S among the left and right solar cell panels 23 of the fin 21 facing the sun. In this state, by the rotating device 40, the fin 21 rotates toward the other side of the left - right direction S following the change of the azimuth of the sun toward the other side of the left - right direction S, and the orientation of the solar cell panel 23 on the other side changes toward the other side of the left - right direction S following the change of the azimuth of the sun toward the other side of the left - right direction S as the fin 21 rotates.

[0051] In the curtain wall 1 of the first embodiment described above, in the cavity 8, the fin 21 can reduce the irradiation of sunlight to the indoor side while receiving sunlight by the solar cell panel 23 of the fin 21 and generating electricity by sunlight. Also, by rotating the fin 21, the orientation of the solar cell panel 23 can be made to follow the altitude or azimuth of the sun (here, following the azimuth of the sun), and electricity can be efficiently generated by sunlight. By making the orientation of the solar cell panel 23 follow either the altitude or the azimuth of the sun, the structure of the support 30 and the rotating device 40 of the fin 21 can be prevented from becoming complicated, and the orientation of the solar cell panel 23 can be easily made to follow the altitude or azimuth of the sun.

[0052] By using the sunlight sensor 54, based on the detection result of the altitude or azimuth of the sun by the sunlight sensor 54, the orientation of the solar cell panel 23 can be accurately made to follow the altitude or azimuth of the sun. In the fin 21 that rotates left and right, corresponding to the change in the azimuth of the sun, while the fin 21 blocks sunlight, the solar cell panel 23 can efficiently generate electricity. The film - type solar cell panel 23 or the coating - type solar cell panel 23 is mounted on the receiving surface portion 22 of the fin 21, and the solar cell panel 23 can be deformed according to the shape of the receiving surface portion 22 of the fin 21, and the solar cell panel 23 can be easily provided on the receiving surface portion 22 of the fin 21.

[0053] Note that the solar cell panel 23 is not limited to a film-type solar cell panel or a coating-type solar cell panel, and may be other solar cell panels (for example, plate-shaped solar cell panels). The control device 53 may be provided inside the curtain wall 1 (for example, around the motor 41), or may be provided indoors in the building 10 (for example, the boundary portion 13, the floor portion 14) as a part of the curtain wall 1.

[0054] Next, the curtain wall 1 of another embodiment will be described. In the curtain wall 1 of another embodiment, the description of the same matters as those of the curtain wall 1 of the first embodiment will be omitted, and the matters different from those of the curtain wall 1 of the first embodiment will be mainly described. Further, for the curtain wall 1 of another embodiment, the same names as those of the components corresponding to the components of the curtain wall 1 of the first embodiment will be used for the components corresponding to the components of the curtain wall 1 of the first embodiment.

[0055] (Second Embodiment) FIG. 10 is a block diagram showing the configuration of a photovoltaic power generation system including the curtain wall 1 of the second embodiment. As shown in the figure, in the curtain wall 1 of the second embodiment, the sunlight sensor 54 is not connected to the control device 53. The control device 53 controls the rotating device 40 based on the data of the altitude or azimuth of the sun corresponding to the date and time (date and time), and rotates the fin 21 by the rotating device 40 to change the orientation of the solar cell panel 23 to follow the altitude or azimuth of the sun based on the data of the altitude or azimuth of the sun.

[0056] The data of the altitude or azimuth of the sun is data indicating the altitude or azimuth of the sun that changes corresponding to the date and time, and is preset and stored in the storage unit of the control device 53. The control device 53 acquires the data of the altitude or azimuth of the sun from the storage unit. The control device 53 controls the rotating device 40 (motor 41) based on the altitude or azimuth of the sun indicated by the acquired data, and rotates the fin 21 by the rotating device 40 to change the orientation of the solar cell panel 23 to follow the altitude or azimuth of the sun indicated by the acquired data.

[0057] In the curtain wall 1 of the second embodiment, based on the data of the altitude or azimuth of the sun corresponding to the date and time, the orientation of the solar panel 23 can be accurately made to follow the altitude or azimuth of the sun. Note that the data of the altitude or azimuth of the sun may be data calculated by a calculation formula for calculating the altitude or azimuth of the sun from the date and time. In this case, the control device 53 calculates the altitude or azimuth of the sun from the date and time by the calculation formula, and acquires the data of the altitude or azimuth of the sun.

[0058] (Third Embodiment) FIG. 11 is a front view showing the curtain wall 1 of the third embodiment, showing a part of the curtain wall 1 installed on the building 10 as viewed from the outdoor side. FIG. 12 is a longitudinal sectional view showing the curtain wall 1 of the third embodiment, showing a part of the curtain wall 1 and the building 10 cut along a plane including the vertical direction R and the indoor / outdoor direction T. FIG. 13 is a cross-sectional view showing the curtain wall 1 of the third embodiment, showing the curtain wall 1 cut along a plane including the left-right direction S and the indoor / outdoor direction T.

[0059] As shown in the drawing, in the curtain wall 1 of the third embodiment, the louver 60 is a horizontal louver extending in the horizontal direction, and the plurality of fins 61 of the louver 60 are horizontal fins extending in the horizontal direction. The louver 60 and the plurality of fins 61 are provided at the upper part of the vision part 1B and are arranged over the entire left-right direction S of the cavity 8. The plurality of fins 61 are arranged at intervals in the vertical direction R inside the cavity 8 and are spaced apart from each other in the vertical direction R. The receiving surface portion 62 of the fin 61 is the upper surface portion of the fin 61, and the receiving surface portion 62 and the solar panel 63 are arranged upward. The solar panel 63 is provided above the fin 61 and is irradiated with sunlight.

[0060] FIG. 14 is a longitudinal sectional view showing the curtain wall 1 of the third embodiment, showing the fins 61 whose postures have changed with respect to the fins 61 of the curtain wall 1 shown in FIG. 12. As shown in FIGS. 12 and 14, the fin 61 is rotatable up and down, and by rotation, the orientation of the receiving surface portion 62 and the solar cell panel 63 can be changed up and down. In FIG. 12, the fin 61, the receiving surface portion 62, and the solar cell panel 63 are arranged along the horizontal direction (the indoor / outdoor direction T). In FIG. 14, the fin 61, the receiving surface portion 62, and the solar cell panel 63 are arranged to be inclined obliquely downward toward the outdoor side with respect to the horizontal direction.

[0061] FIG. 15 is a longitudinal sectional view showing the curtain wall 1 of the third embodiment cut along the line X4-X4 in FIG. 11, and the fin 61 rotated with respect to the fin 61 shown by the solid line is shown by the two-dot chain line. FIG. 16 is a cross-sectional view showing the curtain wall 1 of the third embodiment cut along the line X5-X5 in FIG. 11, and shows two curtain wall units 2 adjacent to each other in the left-right direction S. FIG. 17 is a cross-sectional view showing the curtain wall 1 of the third embodiment with a part of FIG. 16 enlarged. FIG. 18 is a longitudinal sectional view showing the curtain wall 1 of the third embodiment cut along the line X6-X6 in FIG. 17.

[0062] As shown in the drawing, the fin 61 extends in the left-right direction S in the cavity 8 between the left and right vertical frames 6, is connected to each of the left and right vertical frames 6, and spans across the left and right vertical frames 6. The left and right vertical frames 6 are located on the side of the fin 61 and the ends of the fin 61 in the left-right direction S. The solar cell panel 63 extends in the longitudinal direction of the fin 61 between the ends on both sides in the longitudinal direction (left-right direction S) of the fin 61. The vertical frame 6 has a hollow portion 6A and a guide portion 6B located on the side of the fin 61 and the cavity 8. The hollow portion 6A and the guide portion 6B face the fin 61 in the left-right direction S. The hollow portion 6A is an intermediate hollow portion located in the middle of the vertical frame 6 in the indoor / outdoor direction T and extends in the longitudinal direction of the vertical frame 6. The guide portion 6B extends in the longitudinal direction of the vertical frame 6, is located on the cavity 8 side of the hollow portion 6A, and is open toward the fin 61 side in the left-right direction S.

[0063] The support body 70 is provided on the left and right vertical frames 6 of the frame body 3. The left and right support bodies 70 are fixed to the respective left and right vertical frames 6, project toward the fin 61 side in the left - right direction S, and connect the fin 61 to the left and right vertical frames 6. The fin 61 is disposed between the left and right support bodies 70 and is rotatably attached to the left and right support bodies 70. Both end portions (left and right end portions) of the fin 61 are rotatably supported by the support bodies 70 respectively. The shaft member 71 of the support body 70 is a horizontal shaft member extending in the lateral direction and is fixed to the vertical frame 6. The bearing 72 is fixed to the fin 61. The rotation axis of the fin 61 passes through the center of the shaft member 71 and extends in the lateral direction (here, the left - right direction S). The fin 61 is rotatably supported by the support body 70 about a rotation axis (horizontal axis) extending in the lateral direction so as to be rotatable up and down.

[0064] The rotation device 80 includes a motor 81, a conversion mechanism 82, a moving member 83 movable in the longitudinal direction of the vertical frame 6, a mounting member 84 to which the moving member 83 is attached, and a connecting member 85 provided on the fin 61. The motor 81 is housed inside the vertical frame 6 (here, inside the hollow portion 6A) and is attached to the vertical frame 6. The conversion mechanism 82 is housed inside the vertical frame 6 (here, inside the hollow portion 6A and the guide portion 6B). The pinion 82A of the conversion mechanism 82 is attached to the rotation shaft of the motor 81. The rack 82B of the conversion mechanism 82 extends in the longitudinal direction of the vertical frame 6 and moves in the longitudinal direction of the vertical frame 6 in conjunction with the rotation of the pinion 82A. The conversion mechanism 82 causes the rack 82B, the mounting member 84, and the moving member 83 to move in the longitudinal direction of the vertical frame 6 in conjunction with the rotation of the motor 81 by the pinion 82A.

[0065] The moving member 83 extends in the longitudinal direction of the vertical frame 6, is disposed in the guide portion 6B of the vertical frame 6, and slides along the guide portion 6B. The moving member 83 is guided in the longitudinal direction of the vertical frame 6 by the guide portion 6B and moves in the longitudinal direction of the vertical frame 6 together with the mounting member 84 and the rack 82B. The rack 82B and the mounting member 84 are disposed from the inside of the hollow portion 6A to the guide portion 6B through the through - holes formed in the vertical frame 6 and move in the longitudinal direction of the vertical frame 6 within the through - holes. The moving member 83 and the connecting member 85 are located on the side of the fin 61 in the left - right direction S.

[0066] The connecting projection 83A of the moving member 83 is connected to the long hole portion 85A of the connecting member 85. When the moving member 83 moves in the longitudinal direction of the vertical frame 6, the connecting projection 83A moves in the longitudinal direction of the vertical frame 6 together with the moving member 83, and rotates the connecting member 85 and the fin 61. The rotating device 80 rotates the pinion 82A in one direction and the other direction by the motor 81, and moves the rack 82B, the mounting member 84, the moving member 83, and the connecting projection 83A to one side and the other side (upper side and lower side) in the longitudinal direction of the vertical frame 6, and rotates the connecting member 85 and the fin 61 up and down by the connecting projection 83A.

[0067] The rotating device 80 is controlled in the same manner as the rotating device 40 of the first embodiment by the control device 53 (see FIG. 9) in the curtain wall 1 of the first embodiment, or is controlled in the same manner as the rotating device 40 of the second embodiment by the control device 53 (see FIG. 10) in the curtain wall 1 of the second embodiment. Further, the control device 53 controls the rotating device 80 based on the altitude of the sun, and rotates the fin 61 by the rotating device 80 to change the orientation of the solar cell panel 63 so as to follow the altitude of the sun. The rotating device 80 is controlled by the control device 53 to rotate the fin 61 up and down, and change the orientation of the solar cell panel 63 up and down so as to follow the altitude of the sun.

[0068] By the rotating device 80, the fin 61 rotates upward following the increase in the altitude of the sun, and the orientation of the solar cell panel 63 changes upward following the increase in the altitude of the sun as the fin 61 rotates. Also, by the rotating device 80, the fin 61 rotates downward following the decrease in the altitude of the sun, and the orientation of the solar cell panel 63 changes downward following the decrease in the altitude of the sun as the fin 61 rotates. In the curtain wall 1 of the third embodiment, corresponding to the change in the altitude of the sun, while the fin 61 blocks sunlight, the solar cell panel 63 can efficiently generate electricity.

[0069] In the curtain wall 1 of the first embodiment, the fins 21 are supported by the support 30, and in the curtain wall 1 of the second embodiment, the fins 61 are supported by the support 70. On the other hand, the fins 21 and 61 are not limited to being supported by the supports 30 and 70, respectively, and may be rotatably supported by other supports. For example, the fins 21 and 61 may be connected to the upper frame 4, the lower frame 5, or the vertical frame 6, and the fins 21 and 61 may be rotatably supported by the upper frame 4, the lower frame 5, or the vertical frame 6. In this case, the upper frame 4, the lower frame 5, or the vertical frame 6 serves as a support for supporting the fins 21 and 61.

[0070] The present invention is not limited to the curtain wall 1 provided with the curtain wall unit 2, and can be applied to other curtain walls (such as curtain walls with vertical columns and seamless ones). For example, in a curtain wall with vertical columns and seamless ones, the fins 21 and 61 are connected to the vertical columns or the seamless horizontal members.

[0071] As described above, in the present embodiment, the curtain walls described in the following (1) to (7) are disclosed.

[0072] (1) A curtain wall that forms a cavity between an outdoor panel and an indoor panel, comprising fins disposed in the cavity for blocking sunlight, wherein the fins have solar cell panels provided on a light-receiving surface for receiving sunlight. In the curtain wall described in (1), in the cavity formed between the outdoor panel and the indoor panel, it is possible to provide a curtain wall that can generate electricity using sunlight while reducing the irradiation of sunlight indoors.

[0073] (2) In the curtain wall described in (1), a support for rotatably supporting the fins, a rotating device for rotating the fins, A control device that controls the rotation device to rotate the fins, and changes the orientation of the solar panel so as to follow the altitude or azimuth of the sun; A curtain wall comprising the same. In the curtain wall according to (2), the orientation of the solar panel can be made to follow the altitude or azimuth of the sun, and power can be efficiently generated by sunlight.

[0074] (3) In the curtain wall according to (2), The control device is a curtain wall that controls the rotation device to rotate the fins based on the altitude or azimuth of the sun detected by a sunlight sensor. In the curtain wall according to (3), based on the detection result of the altitude or azimuth of the sun by the sunlight sensor, the orientation of the solar panel can be accurately made to follow the altitude or azimuth of the sun.

[0075] (4) In the curtain wall according to (2), The control device is a curtain wall that controls the rotation device to rotate the fins based on data of the altitude or azimuth of the sun corresponding to the date and time. In the curtain wall according to (4), based on the data of the altitude or azimuth of the sun corresponding to the date and time, the orientation of the solar panel can be accurately made to follow the altitude or azimuth of the sun.

[0076] (5) In the curtain wall according to any one of (2) to (4), The fins are supported by the support so as to be rotatable left and right about a rotation axis extending in the vertical direction, The control device is a curtain wall that changes the orientation of the solar panel so as to follow the azimuth of the sun. In the curtain wall according to (5), corresponding to the change in the azimuth of the sun, power can be efficiently generated by the solar panel while the fins block sunlight.

[0077] (6) In the curtain wall described in any one of (2) to (4), the fins are supported by the support so as to be rotatable up and down about a rotation axis extending in the lateral direction, the control device is a curtain wall that changes the orientation of the solar panel to follow the altitude of the sun. In the curtain wall described in (6), in response to a change in the altitude of the sun, while blocking sunlight by the fins, power can be efficiently generated by the solar panel.

[0078] (7) In the curtain wall described in any one of (1) to (6), the solar panel is a film-type solar panel or a coating-type solar panel mounted on the receiving surface portion. In the curtain wall described in (7), the solar panel can be easily provided on the receiving surface portion of the fins.

Explanation of Signs

[0079] 1... Curtain wall, 1A... Spandrel section, 1B... Vision section, 2... Curtain wall unit, 2A... Outdoor panel, 2B... First indoor panel, 2C... Second indoor panel, 3... Frame body, 3A... Opening, 4... Upper frame, 5... Lower frame, 5A... Hollow part, 5B... Guide part, 6... Vertical frame, 6A... Hollow part, 6B... Guide part, 7... Seamless, 8... Cavity, 10... Building, 11... Outer wall, 12... Structure, 13... Boundary part, 13A... Indoor space, 14... Floor part, 14A... Indoor space, 15... Outdoor space, 20... Louver, 21... Fin, 22... Receiving surface part, 23... Solar panel, 30... Support, 31... Shaft material, 32... Bearing, 40... Rotating device, 41... Motor, 42... Conversion mechanism, 42A... Pinion, 42B... Rack, 43... Moving material, 43A... Connecting protrusion, 44... Mounting material, 45... Connecting material, 45A... Long hole part, 50... Power conditioner, 51... Battery, 52... Distribution board, 53... Control device, 54... Solar sensor, 60... Louver, 61... Fin, 62... Receiving surface part, 63... Solar panel, 70... Support, 71... Shaft material, 72... Bearing, 80... Rotating device, 81... Motor, 82... Conversion mechanism, 82A... Pinion, 82B... Rack, 83... Moving material, 83A... Connecting protrusion, 84... Mounting material, 85... Connecting material, 85A... Long hole part, R... Vertical direction, S... Horizontal direction, T... Indoor / outdoor direction.

Claims

1. A curtain wall that forms a cavity between an outdoor panel and an indoor panel, comprising fins disposed in the cavity to block sunlight, wherein the fins have solar cell panels provided on a light-receiving surface that receives sunlight.

2. The curtain wall according to Claim 1, comprising a support that rotatably supports the fins, a rotating device that rotates the fins, and a control device that controls the rotating device to rotate the fins so that the orientation of the solar cell panels changes following the altitude or azimuth of the sun. A curtain wall provided with the above.

3. The curtain wall according to Claim 2, wherein the control device controls the rotating device to rotate the fins based on the altitude or azimuth of the sun detected by a sunlight sensor.

4. The curtain wall according to Claim 2, wherein the control device controls the rotating device to rotate the fins based on data of the altitude or azimuth of the sun corresponding to the date and time.

5. In the curtain wall according to any one of Claims 2 to 4, the fins are rotatably supported by the support left and right about a rotation axis extending in the vertical direction, and the control device changes the orientation of the solar cell panels following the azimuth of the sun.

6. In the curtain wall according to any one of Claims 2 to 4, the fins are rotatably supported by the support up and down about a rotation axis extending in the horizontal direction, and the control device changes the orientation of the solar cell panels following the altitude of the sun.

7. In the curtain wall according to any one of Claims 1 to 4, the solar cell panels are film-type solar cell panels or coating-type solar cell panels mounted on the light-receiving surface.

Images