JP7702585B2 - Curtain walls, solar panel installation structure and solar panel maintenance method - Google Patents

Description

The present disclosure relates to a curtain wall, a solar panel installation structure, and a solar panel maintenance method . This application claims priority based on Japanese Patent Application No. 2023-32411 filed in Japan on March 3, 2023, the contents of which are incorporated herein by reference.

Conventionally, in structures in which curtain walls form the exterior walls of a structure, curtain walls in which solar cell module units are installed instead of the glass panels of the curtain wall have been known (see, for example, Patent Document 1).

Japanese Patent Application Publication No. 2014-136919

However, in the curtain wall of Patent Document 1, when performing maintenance on the solar cell module unit, it is necessary to remove the solar cell module unit from the outside. In order to remove the solar cell module unit, it is necessary to use a gondola or a crane or to set up scaffolding, which creates a problem of the large-scale work involved.

This disclosure has been made in consideration of such problems, and aims to provide a solar panel installation structure and curtain wall that allows for easy maintenance of solar panels.

The solar panel installation structure according to the present disclosure comprises a glass panel arranged on the outside of the room and a solar panel arranged at a distance on the inside of the room from the glass panel.

FIG. 1 is a front view of a curtain wall according to a first embodiment of the present disclosure. 2 is a cross-sectional view taken along line AA in FIG. 1. 2 is a cross-sectional view taken along line BB in FIG. 1. 2 is a cross-sectional view taken along line CC of FIG. 1. 2 is a cross-sectional view taken along line DD in FIG. 1. FIG. 2 is a plan view showing the installation state of the solar panel. FIG. 4 is a cross-sectional view corresponding to FIG. 3 according to a second embodiment of the present disclosure. FIG. 7 is a plan view corresponding to FIG. 6, showing a second embodiment of the present disclosure. FIG. 7 is a plan view corresponding to FIG. 6 and showing another aspect of the second embodiment of the present disclosure. FIG. 8 is a cross-sectional view corresponding to FIG. 7, showing yet another aspect of the second embodiment. FIG. 11 is a plan view showing the embodiment of FIG. 10. A cross-sectional view showing another aspect of the upper frame panel holding portion. FIG. 13 is a plan view showing the embodiment of FIG. 12.

The solar panel installation structure and curtain wall according to an embodiment of the present disclosure are described with reference to the attached drawings.

In the following explanation, when directions are indicated, they will be explained as follows: The left-right direction when viewing the curtain wall from the front is referred to as the width direction. The direction perpendicular to the width direction and along the horizontal direction is referred to as the indoor-outdoor direction. The direction perpendicular to the width direction and the indoor-outdoor direction is referred to as the up-down direction or height direction.

First Embodiment
As shown in Figures 1 and 2, a building or other such structure 1 comprises a structural body 2 and a curtain wall 3 attached along the periphery of the structural body 2. The structural body 2 has columns 4 and beams 5, and a floor 6 is provided for each floor of the building 1. Inside the building 1, a predetermined space above the floor 6 is configured as a living room 7, and an attic space 9 is formed between a ceiling 8 of the living room 7 and the floor 6 of the upper floor. The curtain wall 3 is connected to the structural body 2 via fasteners 10 (see Figures 3 and 5) to form the exterior wall of the building 1.

As shown in Figures 3 to 5, the curtain wall 3 is manufactured as a unit in a factory or the like and is attached to a predetermined location at the construction site using a crane or the like. The curtain wall 3 comprises a frame 11 made, for example, of aluminum, and a glass panel 12 attached to the exterior side of the frame 11. The frame 11 may be made of a material other than aluminum, such as stainless steel.

The glass panels 12 of the curtain wall 3 are composed of a first glass panel 12A attached to a position on the outside of the living room 7, and a second glass panel 12B attached to a position on the outside of the attic space 9 or floor 6. The second glass panel 12B is provided in the so-called spandrel section 20. The first glass panel 12A is, for example, triple glass. The second glass panel 12B is, for example, double glass using float transparent glass. The second glass panel 12B is preferably a highly transparent glass panel. The type of glass panel 12 may be of a different configuration.

A solar panel 13 is provided on the indoor side of the second glass panel 12B. In a plan view, the solar panel 13 is positioned closer to the indoor side than the first glass panel 12A on the upper floor and the shoji screens (not shown) provided on the upper floor. In a side view, the lower end of the solar panel 13 is located in the attic space 9 area and the upper end is located at the height of the lower part of the living room 7 on the upper floor. The upper end of the solar panel 13 is positioned slightly higher than the upper surface of the floor panel 18 provided in the living room 7 on the upper floor.

An insulating panel 14 is provided on the indoor side of the solar panel 13. The insulating panel 14 is formed in a plate shape. The insulating panel 14 is formed to be approximately the same size as the solar panel 13 when viewed from the front. The insulating panel 14 comprises an aluminum plate 15 arranged on the outdoor side, and an insulating material 16 arranged on the indoor side of the aluminum plate 15. The aluminum plate 15 and the insulating material 16 are, for example, bonded together to form a single plate. The aluminum plate 15 is not necessary.

A ventilation unit 17 is provided between the first glass panel 12A and the second glass panel 12B of the curtain wall 3. The ventilation unit 17 connects the outside to the attic space 9.

The curtain wall 3 is an integral unit consisting of a frame body 11, a first glass panel 12A, a second glass panel 12B, a solar panel 13, an insulating panel 14, and a ventilation unit 17.

The structure of the spandrel portion 20 of the curtain wall 3 will be explained in detail using Figures 3 to 5.

The frame body 11 of the spandrel section 20 is formed into a roughly rectangular shape when viewed from the front, consisting of an upper frame 21, a lower frame 22, and left and right vertical frames 23, 24.

As shown in Figure 3, the upper frame 21 comprises an upper frame main body 31 having a hollow portion formed therein, a first extension piece 32 extending from the upper end of the upper frame main body 31 on the outdoor side to the outdoor side, and a second extension piece 33 extending downward from the outdoor side end of the first extension piece 32. The upper frame 21 comprises an upper frame connecting portion 35 having a connecting piece 34 extending from the indoor side end of the upper frame main body 31 to the indoor side. The upper frame 21 comprises an upper frame panel holding portion 36 extending from the indoor side end of the upper frame connecting portion 35 to the indoor side. The upper frame main body 31 and the upper frame connecting portion 35 are connected using screws 94. The upper frame connecting portion 35 and the upper frame panel holding portion 36 are connected using screws 94.

The upper end of the second glass panel 12B is held in a recess 37 surrounded by the upper frame main body portion 31, the first extension piece 32, and the second extension piece 33.

The upper frame panel holding portion 36 has an upper plate 38 extending horizontally, a first protruding piece 39 extending downward from the outer end of the upper plate 38, a second protruding piece 40 extending downward at a distance to the indoor side of the first protruding piece 39, and a third protruding piece 41 extending downward from the indoor end of the upper plate 38 on the indoor side of the second protruding piece 40. The upper end of the solar panel 13 is held in a recess 42 surrounded by the upper plate 38, the first protruding piece 39, and the second protruding piece 40. The upper end of the insulation panel 14 is held in a recess 43 surrounded by the upper plate 38, the second protruding piece 40, and the third protruding piece 41.

As shown in FIG. 4, the lower frame 22 includes a lower frame body 45 having a hollow portion formed therein, a third extension piece 46 extending from the lower end of the lower frame body 45 on the outdoor side to the outdoor side, and a fourth extension piece 47 extending upward from the outdoor side end of the third extension piece 46. The lower frame 22 includes a lower frame panel holding portion 48 extending from the indoor side end of the lower frame body 45 to the indoor side. The lower frame panel holding portion 48 has a hollow portion formed therein. The lower frame body 45 and the lower frame panel holding portion 48 are connected using screws 94. The lower end of the second glass panel 12B is held in a recess 49 surrounded by the lower frame body 45, the third extension piece 46, and the fourth extension piece 47.

The lower frame panel holding portion 48 has an upper plate 50 extending horizontally, a fourth protruding piece 51 extending upward from the middle of the upper plate 50 in the indoor/outdoor direction, a fifth protruding piece 52 extending upward at a distance on the indoor side of the fourth protruding piece 51, and a sixth protruding piece 53 extending upward from the indoor side end of the upper plate 50 on the indoor side of the fifth protruding piece 52. The lower end of the solar panel 13 is held in a recess 54 surrounded by the upper plate 50, the fourth protruding piece 51, and the fifth protruding piece 52. The lower end of the insulation panel 14 is held in a recess 55 surrounded by the upper plate 50, the fifth protruding piece 52, and the sixth protruding piece 53.

As shown in FIG. 5, the vertical frames 23 and 24 have a substantially symmetrical shape in the main parts, so the vertical frame 23 on the left side in the front view will be used for explanation. The vertical frame 23 includes a vertical frame body 60 extending in the indoor/outdoor direction, a fifth extension piece 61 extending outward in the width direction from the outdoor end of the vertical frame body 60, a sixth extension piece 62 extending in the outdoor direction from the outdoor end of the fifth extension piece 61, and a seventh extension piece 63 extending inward in the width direction from the outdoor end of the sixth extension piece 62. The vertical frame 23 includes a vertical frame panel holding portion 64 extending from the indoor end of the vertical frame body 60 to the indoor side. The vertical frame body 60 and the vertical frame panel holding portion 64 are connected using screws 94. The left end (side end) of the second glass panel 12B is held in a recess 65 surrounded by the fifth extension piece 61, the sixth extension piece 62, and the seventh extension piece 63.

The vertical frame panel holding portion 64 has a side panel 66 extending in the indoor/outdoor direction, a seventh protruding piece 67 extending inward in the width direction from the middle of the side panel 66 in the indoor/outdoor direction, an eighth protruding piece 68 extending inward in the width direction at a distance from the indoor side of the seventh protruding piece 67, and a ninth protruding piece 69 extending inward in the width direction from the indoor side end of the side panel 66 on the indoor side of the eighth protruding piece 68. The left end (side end) of the solar panel 13 is held in a recess 70 surrounded by the side panel 66, the seventh protruding piece 67, and the eighth protruding piece 68. The left end (side end) of the insulation panel 14 is held in a recess 71 surrounded by the side panel 66, the eighth protruding piece 68, and the ninth protruding piece 69.

The vertical frame 24 has a structure similar to that of the vertical frame 23, and holds the right end (side end) of the second glass panel 12B. The vertical frame 24 holds the right end (side end) of the solar panel 13. The vertical frame 24 holds the right end (side end) of the insulation panel 14.

The installation method of the solar panels 13 will be described in detail using Figure 6. Three solar panels 13 are arranged on one curtain wall 3. The three solar panels 13 are arranged side by side in the horizontal direction. In Figure 6, the panel arranged on the left side is the first solar panel 13A, the panel arranged on the right side is the second solar panel 13B, and the panel arranged in the middle is the third solar panel 13C.

The left end (side end) of the first solar panel 13A is held between the seventh protruding piece 67 and the eighth protruding piece 68 of the vertical frame 23. A pair of protruding pieces 73, 73 protruding toward the room are formed at the inner end of the seventh protruding piece 67 in the width direction. An airtight material 74 is provided between the pair of protruding pieces 73, 73. The airtight material 74 is a rubber member. When the first solar panel 13A is held between the seventh protruding piece 67 and the eighth protruding piece 68, the outside surface 75 of the first solar panel 13A and the airtight material 74 are in surface contact. The outside surface 75 of the first solar panel 13A and the airtight material 74 are in surface contact over approximately the entire length in the height direction. An airtight line is formed by the contact between the first solar panel 13A and the airtight material 74.

The right end (side end) of the second solar panel 13B is held between the seventh protruding piece 67 and the eighth protruding piece 68 of the vertical frame 24. A pair of protruding pieces 73, 73 protruding toward the room are formed at the inner end of the seventh protruding piece 67 in the width direction. An airtight material 74 is provided between the pair of protruding pieces 73, 73. The airtight material 74 is a rubber member. When the second solar panel 13B is held between the seventh protruding piece 67 and the eighth protruding piece 68, the outside surface 76 of the second solar panel 13B and the airtight material 74 are in surface contact. The outside surface 76 of the second solar panel 13B and the airtight material 74 are in surface contact over approximately the entire length in the height direction. An airtight line is formed by the contact between the second solar panel 13B and the airtight material 74.

A panel connecting member 80 is attached to the right end (side end) of the first solar panel 13A. The panel connecting member 80 is provided over substantially the entire height of the first solar panel 13A. The panel connecting member 80 includes an attachment piece 81 attached to the back surface 77 of the first solar panel 13A, a boundary piece 82 extending from the outer end of the attachment piece 81 in the width direction in the indoor/outdoor direction, a protruding piece 83 extending outward in the width direction from the indoor end of the boundary piece 82, a pressing piece 84 extending on both sides in the width direction from the outdoor end of the boundary piece 82, and protruding pieces 85, 85 extending in the indoor direction from both ends in the width direction of the pressing piece 84.

The mounting piece 81 is formed in a plate shape. The first solar panel 13A and the mounting piece 81 are connected using screws 94 or the like. The screws 94 are attached at multiple points in the height direction of the first solar panel 13A.

The boundary piece 82 is formed in a plate shape. The boundary piece 82 is provided over approximately the entire height of the first solar panel 13A.

The protruding piece 83 is formed in a plate shape. The protruding piece 83 is provided over approximately the entire height of the third solar panel 13C.

The pressing piece 84 is formed in a plate shape. The pressing piece 84 is provided over substantially the entire height direction of the first solar panel 13A and the third solar panel 13C. The pressing piece 84 is formed with a width large enough to accommodate the airtight material 74.

An airtight material 74 is provided in a recess 86 surrounded by the boundary piece 82, the pressing piece 84, and the protruding piece 85. When the panel connecting member 80 is attached to the first solar panel 13A, the airtight material 74 is in surface contact with the outdoor surface 75 of the first solar panel 13A. The airtight material 74 is in surface contact with the outdoor surface 75 of the first solar panel 13A over substantially the entire length in the height direction. An airtight line is formed by the contact between the first solar panel 13A and the airtight material 74.

The left end (side end) of the third solar panel 13C is held in a recess 87 surrounded by the boundary piece 82, the protruding piece 83, and the tip of the protruding piece 85 of the panel connecting member 80 of the first solar panel 13A. When the third solar panel 13C is held by the panel connecting member 80 of the first solar panel 13A, the outdoor side surface 78 of the third solar panel 13C is in surface contact with the airtight material 74. The outdoor side surface 78 of the third solar panel 13C is in surface contact with the airtight material 74 over approximately the entire length in the height direction. An airtight line is formed by the contact between the third solar panel 13C and the airtight material 74.

The structure between the second solar panel 13B and the third solar panel 13C is also configured to be held and connected in a similar manner to the first solar panel 13A and the third solar panel 13C.

Returning to Figure 3, a pair of protruding pieces 57, 57 extending toward the indoor side are formed near the lower end of the first protruding piece 39 of the upper frame panel holding portion 36. An airtight material 74 is provided in a recess 58 surrounded by the first protruding piece 39 and the pair of protruding pieces 57, 57. When the solar panel 13 (13A, 13B, 13C) is attached to the curtain wall 3, the outdoor side surfaces 75, 76, 78 of the solar panel 13 are in surface contact with the airtight material 74. The outdoor side surfaces 75, 76, 78 of the solar panel 13 are in surface contact with the airtight material 74 over substantially the entire width direction. An airtight line is formed by the contact between the solar panel 13 and the airtight material 74.

As shown in Figure 4, a pair of protruding pieces 95, 95 extending in the indoor direction are formed near the upper end of the fourth protruding piece 51 of the lower frame panel holding portion 48. An airtight material 74 is provided in a recess 96 surrounded by the fourth protruding piece 51 and the pair of protruding pieces 95, 95. When the solar panel 13 (13A, 13B, 13C) is attached to the curtain wall 3, the outdoor surface 75, 76, 78 of the solar panel 13 is in surface contact with the airtight material 74. The outdoor surface 75, 76, 78 of the solar panel 13 is in surface contact with the airtight material 74 over approximately the entire width direction. An airtight line is formed by the contact between the solar panel 13 and the airtight material 74.

When the solar panel 13 is attached to the curtain wall 3, the airtight material 74 is in contact with the entire periphery of the surfaces 75, 76, and 78 of the solar panel 13. Airtight lines are formed at the positions of the surfaces 75, 76, and 78 of the solar panel 13.

As shown in FIG. 3, a cover member 90 is provided at the boundary between the solar panel 13 and the living room 7. The cover member 90 is formed in a generally L-shape in a side view. The cover member 90 includes a side plate 91 extending vertically and an upper plate 92 extending from the upper end of the side plate 91 toward the outside. The cover member 90 is formed by bending a steel plate. The cover member 90 is formed to have a length substantially equal to the width of the curtain wall 3. The side plate 91 is connected to a connecting piece 93 extending from the floor 6 near the lower end by using a screw 94. The screw 94 is provided at a position lower than the upper surface of the floor panel 18. The outside end of the upper plate 92 is arranged in contact with the frame body 11 of the curtain wall 3. When the cover member 90 is attached, the solar panel 13 is not visible.

The solar panel 13 is equipped with electrical wiring (not shown) such as a power cable. The electrical wiring is connected, for example, to the back surface 77 of the first solar panel 13A and is arranged on the indoor side through the gap between the insulation panel 14 and the frame body 11. Since the electrical wiring is arranged on the indoor side of the airtight line, it does not affect the airtightness of the curtain wall 3.

As shown in Figures 3 to 5, an outside air introduction hole 99 is formed in the frame body 11 of the curtain wall 3. The outside air introduction hole 99 is formed in the vertical frames 23, 24. The outside air introduction hole 99 is circular. The outside air introduction hole 99 is formed in two locations on each of the vertical frames 23, 24, spaced apart in the vertical direction, for a total of four locations. The outside air introduction hole 99 may be formed in only two locations, one below the vertical frame 23 and one above the vertical frame 24. The outside air introduction hole 99 may be formed only in two locations spaced apart in the vertical direction on the vertical frame 23, and not in the vertical frame 24. The shape of the outside air introduction hole 99 may be other than circular.

This section explains how to maintain solar panel 13.

First, remove the cover member 90 that corresponds to the location where the solar panel 13 to be maintained is located. To remove the cover member 90, partially remove the floor panel 18 in that location. Remove the screws 94 that connect the cover member 90 to the connecting piece 93, and remove the cover member 90.

Next, remove the upper frame panel holding portion 36. To remove the upper frame panel holding portion 36, remove the screw 94 connecting the upper frame panel holding portion 36 to the upper frame connecting portion 35. Once the screw 94 is removed, the upper frame panel holding portion 36 can be removed.

Next, the solar panels 13 are removed. First, the third solar panel 13C is removed by lifting it vertically upwards. The third solar panel 13C is not fixed anywhere, but is only held between the first solar panel 13A and the second solar panel 13B, so it can be easily lifted and removed. Next, the second solar panel 13B is removed by lifting it vertically upwards. Finally, the first solar panel 13A is removed by lifting it vertically upwards. At this time, there are no obstacles such as shoji screens on the upper floor vertically above the solar panel 13, and an attachment/detachment space 98 has been formed, so the solar panel 13 can be easily removed.

Once maintenance of the solar panel 13 is completed, return the solar panel 13 to its original position. The solar panel 13 to be returned may be the same as the one that was removed, or it may be a new product. When returning the solar panel 13, the solar panel 13 can be easily returned to its original position within the curtain wall 3 from the living room 7 side by reversing the steps described above.

The curtain wall 3 comprises a glass panel 12 arranged on the outside of the room, and a solar panel 13 arranged at intervals on the indoor side of the glass panel 12. The solar panel 13 is installed so that it can be attached and detached from the living room 7 side. The curtain wall 3 allows easy maintenance of the solar panel 13. Because the solar panel 13 is arranged at intervals on the indoor side of the glass panel 12, the solar panel 13 is difficult to see from the outside, and the exterior design can be finished to look good.

The solar panels 13 are installed in the spandrel section 20, making effective use of dead space in the building 1.

A cover member 90 is provided on the side of the solar panel 13 facing the living room 7 above the solar panel 13, which is detachably attached to the frame 11 of the curtain wall 3, and a recess 42 is formed to hold the upper end of the solar panel 13, and an upper frame panel holding portion 36 is provided detachably to the frame 11 of the curtain wall 3. By simply removing the cover member 90 and the upper frame panel holding portion 36, the solar panel 13 can be attached and removed from the living room 7 side.

A space 98 for attaching and detaching the solar panel 13 is formed above the installation position of the solar panel 13. When performing maintenance on the solar panel 13 from the living room 7 side, the solar panel 13 can be easily lifted vertically upward. There are no obstacles when returning the solar panel 13 to the curtain wall 3, and the solar panel 13 can be smoothly installed in its original position.

An airtight material 74 is arranged on the periphery of the outdoor surface of the solar panel 13. By mounting the solar panel 13 in a specified position, the surface of the solar panel 13 and the airtight material 74 come into contact with each other, reliably forming an airtight line.

The curtain wall 3 includes a frame 11 that holds the glass panels 12, and outside air introduction holes 99 are formed in the frame 11 that is arranged around the space formed between the glass panels 12B of the spandrel section 20 and the solar panels 13. The temperature inside the space does not become too high, allowing the solar panels 13 to function effectively.

Second Embodiment
A second embodiment of the present disclosure will be described with reference to FIGS. 7 to 9. The same components as those in the first embodiment are given the same reference numerals, and the description will be omitted. The solar panel 100 used in this embodiment is a flexible sheet-like one, for example, a perovskite solar cell. The solar panel 100 includes a PV cell 150, a back sheet 151 provided on the back side of the PV cell 150, and a cover sheet 152 provided on the front side of the PV cell 150 so as to cover the PV cell 150. The PV cell 150, the back sheet 151, and the cover sheet 152 are integrated by a sealant 161. The peripheral portion of the solar panel 100 does not include the PV cell 150, and is composed of the back sheet 151, the cover sheet 152, and the sealant 161.

As shown in Figure 7, the upper frame 21 has an upper frame connecting portion 35 with a connecting piece 34 extending from the indoor end of the upper frame main body portion 31 to the indoor side. The upper frame 21 has an upper frame panel holding portion 101 extending from the indoor end of the upper frame connecting portion 35 to the indoor side. The upper frame connecting portion 35 and the upper frame panel holding portion 101 are connected using screws 94.

The upper frame panel retaining portion 101 comprises a first plate portion 102 connected to the connecting piece 34 and extending horizontally, a first protruding piece 103 extending upward from the indoor side end of the first plate portion 102, a second protruding piece 104 extending vertically approximately parallel to the first protruding piece 103 at a distance on the indoor side, an upper plate 105 extending horizontally from the upper end of the second protruding piece 104 toward the indoor side, a third protruding piece 106 extending vertically downward from the indoor side end of the upper plate 105, a second plate portion 107 extending horizontally from the lower end of the third protruding piece 106 toward the indoor side, a fourth protruding piece 108 extending vertically downward from the indoor side end of the second plate portion 107, and a fifth protruding piece 109 extending vertically downward from near the outdoor side end of the second plate portion 107. The upper end of the solar panel 100 is held in a recess 110 surrounded by the upper plate 105, the second protruding piece 104, and the third protruding piece 106. The upper end of the solar panel 100 is fixed by a bolt 111 and a nut 112 that connects between the second protruding piece 104 and the third protruding piece 106. The solar panel 100 is suspended and supported by the bolt 111 and the nut 112 in the recess 110. The bolts 111 and the nuts 112 are provided at multiple locations at intervals in the width direction of the upper frame panel holding part 101. The solar panel 100 is suspended and supported by the upper frame panel holding part 101 so as not to bend. The upper end of the fireproof board 153 is held in the area surrounded by the second plate part 107, the fourth protruding piece 108, and the fifth protruding piece 109.

The solar panel 100 is supported by a bolt 111 and a nut 112. The bolt 111 is detachable from the upper frame panel holding part 101. The nut 112 is fixed to the outside of the second protruding piece 104 of the upper frame panel holding part 101. A through hole through which the bolt 111 is inserted is formed near the upper end of the solar panel 100. The method of supporting the solar panel 100 is not limited to this. For example, without providing the nut 112, a structure in which a female thread is machined on the second protruding piece 104 and the bolt 111 is tightened and fixed thereto may be used. Alternatively, the upper part of the solar panel 100 may be clamped and fixed with a jig such as an aluminum shaped material, and the jig may be fixed to the upper frame panel holding part 101 to support the solar panel 100 in a suspended state.

The lower end of the solar panel 100 is positioned at approximately the same height as in Figure 4. The solar panel 100 is suspended from the upper panel holding part 101, and the lower end of the solar panel 100 is held in the recess 54 of the lower frame panel holding part 48. The lower end of the fireproof board 153 is held in the recess 55.

As shown in FIG. 8, the main parts of the vertical frames 23 and 24 are substantially symmetrical, so the vertical frame 23 on the left side when viewed from the front will be used for the explanation. The vertical frame panel holding portion 64 has a side plate 66 extending in the indoor/outdoor direction, a seventh protruding piece 67 extending inward in the width direction from the middle of the side plate 66 in the indoor/outdoor direction, an eighth protruding piece 68 extending inward in the width direction at a distance from the indoor side of the seventh protruding piece 67, and a ninth protruding piece 69 extending inward in the width direction from the indoor end of the side plate 66 on the indoor side of the eighth protruding piece 68. The left end (side end) of the solar panel 100 is held in a recess 70 surrounded by the side plate 66, the seventh protruding piece 67, and the eighth protruding piece 68. The left end (side end) of the fireproof board 153 is held in a recess 120 surrounded by the side plate 66, the eighth protruding piece 68, and the ninth protruding piece 69.

The vertical frame 24 has approximately the same structure as the vertical frame 23, and holds the right end (side end) of the solar panel 100 and the right end (side end) of the fireproof board 153.

The installation method of the solar panels 100 will be explained in detail using Figure 8. One solar panel 100 is arranged on one curtain wall 3.

A pair of protruding pieces 73, 73 that protrude toward the room are formed at the inner tip of the seventh protruding piece 67 in the width direction. An airtight material 74 is provided between the pair of protruding pieces 73, 73. The airtight material 74 is a rubber member. When the solar panel 100 is held between the seventh protruding piece 67 and the eighth protruding piece 68, the outdoor side surface 121 of the solar panel 100 and the airtight material 74 are in surface contact. The outdoor side surface 121 of the solar panel 100 and the airtight material 74 are in surface contact over approximately the entire length in the height direction. An airtight line is formed by the contact between the solar panel 100 and the airtight material 74.

The right end (side end) of the solar panel 100 is held between the seventh protruding piece 67 and the eighth protruding piece 68 of the vertical frame 24. The fit between the right end (side end) of the solar panel 100 and the vertical frame 24 is the same as the left end.

Returning to Figure 7, a pair of protruding pieces 160, 160 protruding toward the room are formed at the lower end of the second protruding piece 104 of the upper frame panel holding portion 101. An airtight material 74 is provided between the pair of protruding pieces 160, 160. The airtight material 74 is a rubber member. When the solar panel 100 is held between the recesses 110, there is surface contact between the outdoor side surface 121 of the solar panel 100 and the airtight material 74. There is surface contact between the outdoor side surface 121 of the solar panel 100 and the airtight material 74 over approximately the entire length in the width direction. An airtight line is formed by the contact between the solar panel 100 and the airtight material 74.

As in FIG. 4, the lower end of the solar panel 100 is in surface contact between the outdoor surface 121 of the solar panel 100 and the airtight material 74. The outdoor surface 121 of the solar panel 100 is in surface contact with the airtight material 74 over substantially the entire length in the width direction. An airtight line is formed by the contact between the solar panel 100 and the airtight material 74.

When the solar panel 100 is attached to the curtain wall 3, an airtight line is formed around the entire periphery of the surface 121 of the solar panel 100.

This section describes how to maintain the solar panel 100.

First, remove the cover member 90 that corresponds to the location where the solar panel 100 to be maintained is located. To remove the cover member 90, partially remove the floor panel 18 in that location. Remove the screws 94 that connect the cover member 90 to the connecting piece 93, and remove the cover member 90.

Next, remove the upper frame panel holding part 101. To remove the upper frame panel holding part 101, remove the screw 94 that connects the upper frame panel holding part 101 to the upper frame connecting part 35. Once the screw 94 is removed, the upper frame panel holding part 101 can be removed.

Next, remove the solar panel 100. The upper end of the solar panel 100 is fixed to the upper frame panel holding part 101. By lifting the upper frame panel holding part 101, the solar panel 100 can be lifted together. At this time, the solar panel 100 can be lifted easily because it is a flexible sheet-like body and lightweight. Since the fireproof board 153 is not integrated with the solar panel 100, only the solar panel 100 can be lifted. The solar panel 100 and the fireproof board 153 may be integrated. By removing the bolts 111 attached to the upper frame panel holding part 101, the fixation between the solar panel 100 and the upper frame panel holding part 101 can be released. It is also possible to remove only the upper frame panel holding part 101 first, and then lift and remove only the solar panel 100.

Once maintenance of the solar panel 100 is completed, return the solar panel 100 to its original position. The solar panel 100 to be returned may be the same as the one that was removed, or it may be a new product. When returning the solar panel 100, the solar panel 100 can be easily returned to its original position within the curtain wall 3 from the living room 7 side by reversing the steps described above.

Since the solar panel 100 is arranged as a single sheet in the width direction of the curtain wall 3, the power wiring for the solar panel 100 can be simplified and wiring work can be carried out efficiently. By reducing the number of junction boxes for the solar panel 100, the installation space for the junction boxes can be saved and labor for construction and maintenance can be reduced.

Figure 9 is yet another embodiment of Figure 8. In Figure 9, the solar panel 100 is divided into three in the width direction as in the first embodiment. The installation structure of the flexible sheet-like solar panel 100 (100A, 100B, 100C) has the same structure as in Figure 7 at the top end, and is substantially the same structure as in the first embodiment apart from the top end.

When performing maintenance on the solar panels 100 (100A, 100B, 100C) shown in Figure 9, they may be configured so that they can be removed and installed one by one, as in the first embodiment, or they may be configured so that all three solar panels 100 (100A, 100B, 100C) can be removed and installed at the same time. The flexible sheet-like solar panels 100 (100A, 100B, 100C) are lightweight, so it is easy to remove and install all three at the same time.

Figures 10 and 11 show further different aspects of the second embodiment. In Figure 10, the fifth protruding piece 109 is not formed in the upper frame panel holding portion 101. In Figures 10 and 11, the solar panel 100 and the fireproof board 153 are configured separately, but they may be formed integrally. In Figure 10, no airtight material is provided, but an airtight material 74 may be provided as in Figure 7.

12 and 13 show another embodiment of the upper frame panel holding part of FIG. 7. The upper frame panel holding part 101 shown in FIG. 12 has a pair of protruding pieces 165, 165 protruding toward the room from the lower end of the fifth protruding piece 109. An airtight material 74 is provided between the pair of protruding pieces 165, 165. The airtight material 74 is a rubber member. When the fireproof board 153 is held in the area surrounded by the second plate portion 107, the fourth protruding piece 108, and the fifth protruding piece 109, the outside surface 166 of the fireproof board 153 and the airtight material 74 are in surface contact. The outside surface 166 of the fireproof board 153 and the airtight material 74 are in surface contact over almost the entire width. An airtight line is formed by the contact between the fireproof board 153 and the airtight material 74.

As shown in FIG. 13, a pair of protruding pieces 73, 73 that protrude toward the room are formed at the inner tip of the eighth protruding piece 68 in the width direction. An airtight material 74 is provided between the pair of protruding pieces 73, 73. The airtight material 74 is a rubber member. When the fireproof board 153 is held between the eighth protruding piece 68 and the ninth protruding piece 69, the outdoor surface 166 of the fireproof board 153 is in surface contact with the airtight material 74. The outdoor surface 166 of the fireproof board 153 is in surface contact with the airtight material 74 over approximately the entire length in the height direction. An airtight line is formed by the contact between the fireproof board 153 and the airtight material 74.

The right end (side end) of the fireproof board 153 is held between the eighth protruding piece 68 and the ninth protruding piece 69 of the vertical frame 24. The fit between the right end (side end) of the fireproof board 153 and the vertical frame 24 is the same as the left end.

The bottom end of the fireproof board 153 is fitted in substantially the same manner as in Figure 12. When the fireproof board 153 is attached, the exterior surface 166 of the fireproof board 153 is in surface contact with the airtight material 74. The exterior surface 166 of the fireproof board 153 is in surface contact with the airtight material 74 over substantially the entire length in the width direction. The contact between the fireproof board 153 and the airtight material 74 forms an airtight line.

In the configurations of Figures 12 and 13, the solar panel 100 is arranged on the outdoor side of the airtight line. In this case, the solar panel 100 may simply be supported by hanging, and the seventh protruding piece 67 of the vertical frame 23 may not be formed. The lower end of the solar panel 100 may be held without touching the lower frame.

The solar panel installation structure and curtain wall according to the present disclosure are not limited to the configurations of the above-described embodiments, and appropriate modifications and substitutions can be made without departing from the gist of the present disclosure.

In this embodiment, the solar panels 13 are provided in the spandrel portion 20, but the structure of the curtain wall 3 may be different.

In this embodiment, a cover member 90 and an upper frame panel holding portion 36 are provided, but the shape and configuration of the member holding the upper end of the solar panel 13 and the cover member may be designed as appropriate.

In this embodiment, an attachment/detachment space 98 is provided within the living room 7, but if the solar panel 13 can be attached and detached from the living room 7 side, it is not necessary to provide the attachment/detachment space 98 vertically above the solar panel 13.

In this embodiment, an airtight line is formed by providing an airtight material 74 on the frame body 11 facing the surface of the solar panel 13, but the airtight material 74 may be configured to be attached in advance to the surface side of the solar panel 13. The airtight line may be formed between the frame body 11 and the insulation panel 14.

In this embodiment, an outside air inlet hole 99 is formed in the frame body 11 of the curtain wall 3, but if thermal measures are taken in the hollow portion of the curtain wall 3, the outside air inlet hole 99 is not necessary.

In this embodiment, we have described the case where a solar panel installation structure is used on a curtain wall, but a similar structure may also be used, for example, on fixed windows for residential use.

In this embodiment, the structure 2 has a beam 5, but the structure 2 may have a structure without a beam.

In this embodiment, the upper end of the solar panel 13 is positioned slightly higher than the upper surface of the floor panel 18, but the position of the upper end of the solar panel 13 may be set arbitrarily.

For example, as shown in FIG. 8, in this embodiment, the solar panel and the fireproof board have the same width dimensions, but the solar panel may be shorter or longer than the fireproof board. The area of the solar panel may be smaller or larger than the area of the fireproof board. There are no limitations on the area or dimensions of the solar panel.

3...Curtain wall, 12...Glass panel, 13, 100...Solar panel, 20...Spandrel section, 36, 101...Upper frame panel holding section (panel holding member), 42, 110...Recess (holding section), 74...Airtight material, 90...Cover member, 98...Removable space, 99...Outside air intake hole

Claims (19)

A glass panel provided on the outside of the room;
A solar panel provided on the indoor side of the glass panel at a distance;
A frame for holding the glass panel;
a cover member provided in an indoor space above the solar panel;
The solar panel is provided in a curtain wall so as to be insertable and removable from the inside of the room. A glass panel provided on the outside of the room;
A solar panel provided on the indoor side of the glass panel at a distance;
A frame for holding the glass panel;
a cover member provided in an indoor space above the solar panel;
The solar panel is provided in a curtain wall so as to be removable from the inside of the room. A panel holding member is provided on the upper end of the solar panel,
3. The curtain wall according to claim 1, wherein the solar panel having the panel holding member is configured to be insertable and removable from the indoor side. A panel holding member is provided on the upper end of the solar panel,
The curtain wall according to claim 1 or 2, wherein the panel holding member is fixed to the frame body. A panel holding member is provided on the upper end of the solar panel,
The curtain wall according to claim 1 or 2, wherein the panel holding member is fixed to the indoor side of the frame body. A panel holding member is provided on the upper end of the solar panel,
The curtain wall according to claim 1 or 2, wherein the solar panel is detachable from the panel holding member. The curtain wall according to claim 1 or 2, wherein the cover member is detachable from the frame body. A panel holding member is provided on the upper end of the solar panel,
The curtain wall according to claim 1 or 2, wherein the panel holding member is detachable from the frame body. The curtain wall according to claim 1 or 2, in which the solar panels are installed in the spandrel section. The curtain wall according to claim 1 or 2, in which a space for attaching and detaching the solar panel is formed above the installation position of the solar panel. The curtain wall according to claim 1 or 2, wherein an airtight material is provided on the outer peripheral edge of the solar panel. The curtain wall according to claim 1 or 2, wherein the solar panel is in the form of a flexible sheet. The curtain wall according to claim 1 or 2, in which the solar panels are supported by hanging. The curtain wall according to claim 1 or 2, in which an outside air introduction hole is formed in the frame provided around the space formed between the glass panel and the solar panel. A glass panel provided on the outside of the room;
A solar panel provided on the indoor side of the glass panel at a distance;
A frame for holding the glass panel;
A cover member provided in an indoor space above the solar panel;
A curtain wall comprising: a panel holding member having a holding portion formed therein for holding the upper end of the solar panel. A glass panel provided on the outside of the room;
A solar panel provided on the indoor side of the glass panel at a distance;
A frame for holding the glass panel;
A cover member detachably provided on the frame body in an indoor space above the solar panel;
A curtain wall comprising: a panel holding member having a holding portion for holding the upper end of the solar panel and removably attached to the frame body. A glass panel provided on the outside of the room;
A solar panel provided on the indoor side of the glass panel at a distance;
A frame for holding the glass panel;
A cover member detachably provided on the frame body in an indoor space above the solar panel;
A solar panel installation structure comprising: a panel holding member having a holding portion for holding an upper end of the solar panel and removably attached to the frame body. A maintenance method for solar panels installed on a curtain wall including a glass panel installed on an exterior side and a frame body that holds the glass panel, comprising:
The solar panel is provided on the indoor side of the glass panel at a distance from the indoor side,
A cover member provided in an indoor space above the solar panel;
a panel holding member provided on an upper end of the solar panel,
A solar panel maintenance method comprising removing the cover member from the indoor side and then removing the solar panel attached to the panel holding member from the curtain wall. A maintenance method for solar panels installed on a curtain wall including a glass panel installed on an exterior side and a frame body that holds the glass panel, comprising:
The solar panel is provided on the indoor side of the glass panel at a distance from the indoor side,
A cover member provided in an indoor space above the solar panel;
a panel holding member provided on an upper end of the solar panel,
A solar panel maintenance method comprising removing the cover member from the indoor side, removing the panel holding member from the curtain wall, and then removing the solar panel from the curtain wall.

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