Solar power generation equipment

Abstract

The present invention provides a solar power generation device that can be installed on the exterior material of a building and that can suppress damage to the exterior material even when localized uplift loads are applied. [Solution] The solar power generation device 1 comprises eight linear bodies 12 and a power generation module 10. Each linear body 12 is flexible and arranged sequentially in the X direction. The power generation module 10 is composed of a plurality of divided sections 11. Each section 11 is supported by a linear body 12. Each of the eight linear bodies 12 has oblique extensions 122a, 122c, ... extending in directions oblique to both the X and Y directions. Each linear body 12 is connected to an adjacent linear body 12 on one side in the X direction at one end of the oblique extension 122a, 122c, ... and to an adjacent linear body 12 on the other side in the X direction at the other end of the oblique extension 122a, 122c, ...

Description

Technical Field

[0001] The present invention relates to a photovoltaic power generation device, and particularly to an attachment structure of a photovoltaic power generation device to an exterior material of a building.

Background Art

[0002] In recent years, a photovoltaic power generation device may be attached to an exterior material such as a roof of a building.

[0003] Patent Document 1 discloses a photovoltaic power generation device including a plurality of support structures and a plurality of solar cell modules fixed to the support structures. The plurality of support structures are arranged in parallel with a space therebetween. Each support structure has a pantograph structure and is stretchable and retractable, and is fixed to a roof or an outer wall at one end. That is, in the photovoltaic power generation device of Patent Document 1, it is provided in a state of a cantilever beam in which one end of each support structure is fixed to a roof or the like.

[0004] The plurality of solar cell modules are arranged side by side in the stretching and retracting direction of the support structure between adjacent support structures.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the above Patent Document 1, it is said that the power generation amount can be increased by extending the support structure when there is no wind or the wind is weak, and the photovoltaic power generation device can be protected from the wind by contracting the support structure when the wind is strong.

[0007] When the support structure is under tension, wind can enter a portion of the space between the exterior materials such as the roof and the solar power generation equipment. In such cases, a localized uplift load is applied to a portion of the solar power generation equipment.

[0008] However, in the structure disclosed in Patent Document 1, when a localized uplift load is applied, the load is concentrated and transmitted to the support structures located on both sides of the applied portion, resulting in a concentrated load on the support structures. Consequently, there is a concern that the parts of the exterior material corresponding to the fixing points of the support structures may be damaged.

[0009] The present invention has been made to solve the above-mentioned problems, and aims to provide a solar power generation device that can be installed on the exterior material of a building and can suppress damage to the exterior material even when localized uplift loads are applied. [Means for solving the problem]

[0010] A photovoltaic power generation device according to one aspect of the present invention is a photovoltaic power generation device that is mounted on the exterior material of a building and comprises n (n: an even number of 4 or more) linear bodies and a power generation module. Each of the n linear bodies is flexible and is arranged sequentially in a first direction along the outer surface of the exterior material. The power generation module is supported by the n linear bodies and converts solar energy into electricity.

[0011] In the photovoltaic power generation device according to this embodiment, each of the n linear bodies is fixed and stretched to the exterior material at both ends. Of the n linear bodies, the linear bodies excluding the two linear bodies located on both outer sides in the first direction are defined as intermediate linear bodies. In this case, in a plan view from a third direction perpendicular to the outer surface of the exterior material, each of the intermediate linear bodies has an oblique extension portion that extends in a direction oblique to both the first and second directions. Each of the intermediate linear bodies is connected to a linear body adjacent to it in one direction in the first direction at one end of the oblique extension portion, and is connected to a linear body adjacent to it in the other direction in the first direction at the other end of the oblique extension portion.

[0012] In the photovoltaic power generation device according to the above embodiment, all intermediate linear bodies except for the two linear bodies located on both outer sides in the first direction have diagonal extensions. Each intermediate linear body is connected to an adjacent linear body on one side in the first direction at one end of its diagonal extension, and to an adjacent linear body on the other side in the first direction at the other end of its diagonal extension. Therefore, even when a localized updraft is applied, the first-direction component of the applied load is distributed to the adjacent linear bodies on both sides in the first direction that are connected at both ends of the diagonal extension. Thus, in the photovoltaic power generation device according to the above embodiment, even when a localized updraft is applied, the first-direction component of the applied load is sequentially distributed to the n linear bodies, and the concentration of load on some linear bodies is suppressed.

[0013] Furthermore, in the solar power generation device according to the above embodiment, since a flexible linear body is used, the linear body can be folded during or before construction, making it compact for transportation and superior in terms of ease of handling.

[0014] Furthermore, in the above-described photovoltaic power generation device, since the number of linear elements n is an even number of 4 or more, the load can be evenly distributed to both the linear elements adjacent to one side and the linear elements adjacent to the other side. For example, if n=3, there will be only one intermediate linear element, and it will not be possible to form a grid where the tension of the three linear elements is balanced, and the load cannot be evenly distributed to adjacent linear elements. Also, if n is an odd number of 5 or more, the grid shape formed by some of the intermediate linear elements and the linear elements adjacent in the first direction will inevitably be distorted and different from the others, and the load cannot be evenly distributed to adjacent linear elements. Therefore, in the above-described photovoltaic power generation device, by setting the number of linear elements n to an even number of 4 or more, it is possible to form a grid where the tension of the linear elements is balanced, and even when a localized updraft load is applied, it is possible to suppress the concentration of the load on the fixed points of some linear elements.

[0015] Therefore, in the above-mentioned solar power generation device, even if a localized updraft load is applied, the concentration of load on the anchoring portion of some of the linear elements (the portion anchored to the exterior material) is suppressed, and damage to the exterior material can be suppressed.

[0016] In the photovoltaic power generation device according to the above embodiment, two rails and a plurality of anchoring frames may be further provided. When the direction along the outer surface of the exterior material and intersecting the first direction is defined as the second direction, the two rails each extend in the first direction and are fixed to the exterior material spaced apart from each other in the second direction. The plurality of anchoring frames are each arranged relative to the two rails and are configured to be movable along the rails in the first direction.

[0017] Furthermore, in the photovoltaic power generation device according to this embodiment, each of the n linear bodies may have both ends fixed to the anchoring frame positioned on one of the two rails and to the anchoring frame positioned on the other of the two rails.

[0018] In the above-described solar power generation system, both ends of each linear body are fixed to a fixing frame that is movable in a first direction relative to each of the two rails. Therefore, during the installation of the solar power generation system, both ends can be fixed to the fixing frame and then the fixing frame can be moved along the rails. Thus, in the above-described solar power generation system, the amount of work required on the exterior material can be reduced during installation compared to when the system is pre-deployed and positioned along the exterior material.

[0019] In the photovoltaic power generation device according to the above embodiment, the power generation module may comprise a film and a module body. The film is flexible and has a strip shape in plan view, each extending in the first direction, and may be stretched between at least two of the n linear bodies. The module body is flexible and has a photoelectric conversion function, and may be fixed to the film.

[0020] In the above-described photovoltaic power generation system, since both the membrane and the module body are flexible, the power generation module can be folded when fixing both ends to the anchoring frame, and then unfolded by moving the anchoring frame along the rails. Therefore, when installing the above-described photovoltaic power generation system, work efficiency can be improved compared to when the power generation module is placed on the exterior material in a pre-unfolded state.

[0021] In the photovoltaic power generation device according to the above embodiment, the power generation module may have a plurality of segments that are divided from each other. In this case, the plurality of segments may be arranged with gaps between adjacent segments in at least one of the first and second directions.

[0022] In the above photovoltaic power generation device, since a plurality of divided bodies are arranged with a gap between the divided bodies adjacent to each other in at least one of the first direction and the second direction, even when wind blows between the exterior material and the divided body (power generation module), the wind can escape through the gap. Therefore, in the above photovoltaic power generation device, even when wind blows between the exterior material and the divided body, it is possible to suppress the addition of a large load to the fixing portion with respect to the exterior material.

[0023] In the photovoltaic power generation device according to the above aspect, at least a part of the plurality of divided bodies may be arranged such that at least a part of the intermediate linear body is straddled by the module body in the plan view.

[0024] In the above photovoltaic power generation device, it is not necessary for all the divided bodies to be sized to fit within the region between the linear bodies adjacent to the module body, and a configuration in which the module body straddles at least a part of the intermediate linear body as described above can also be adopted. When such a configuration is adopted, the module size in the first direction can be appropriately selected.

[0025] In the photovoltaic power generation device according to the above aspect, the n linear bodies may be arranged and connected such that a plurality of hexagonal grids or a plurality of rhombic grids arranged in a matrix in the plan view as viewed from the third direction are formed.

[0026] In the above photovoltaic power generation device, since the n linear bodies are arranged and connected such that a plurality of hexagonal grids or a plurality of rhombic grids arranged in a matrix in the plan view are formed, even when a local uplift load is applied, the load is efficiently dispersed to the n linear bodies.

Advantages of the Invention

[0027] The photovoltaic power generation device according to each of the above aspects is arranged on the exterior material of a building, and even when a local uplift load is applied, damage to the exterior material can be suppressed.

Brief Description of the Drawings

[0028] [Figure 1] This is a plan view showing the solar power generation system according to the first embodiment installed on a roof. [Figure 2] (a) is a cross-sectional view showing the divided body in its unfolded state, and (b) is a cross-sectional view showing the divided body in its folded state. [Figure 3] This is a plan view showing a partial configuration of a solar power generation system. [Figure 4] (a) is a cross-sectional view showing a fixing frame used to secure a solar power generation device to a roof, and (b) is a cross-sectional view showing the fixing structure of a linear body to the fixing frame. [Figure 5] This is a schematic diagram illustrating the load distribution when a localized updraft load is applied to a solar power generation system. [Figure 6] This is a schematic diagram illustrating the transmission of load when a localized updraft load is applied to a photovoltaic power generation system in a comparative example. [Figure 7] This is a plan view showing a partial configuration of a photovoltaic power generation system according to the second embodiment. [Figure 8] This is a plan view showing a partial configuration of a photovoltaic power generation system according to Modification Example 1. [Figure 9] This is a plan view showing a partial configuration of a photovoltaic power generation system according to Modification Example 2. [Figure 10] This is a plan view showing a partial configuration of a photovoltaic power generation system according to Modification 3. [Figure 11] This is a cross-sectional view showing a part of the configuration of a photovoltaic power generation device according to Modification 4. [Modes for carrying out the invention]

[0029] Embodiments of the present invention will be described below with reference to the drawings. The embodiments described below are illustrative examples of the present invention, and the present invention is not limited to these embodiments except for its essential configuration.

[0030] [First Embodiment] The solar power generation device 1 according to the first embodiment is mounted on the exterior material of a building. In this embodiment, the mounting target for the solar power generation device 1 is, for example, the roof 3.

[0031] 1. Outline configuration of solar power generation system 1 The general configuration of the solar power generation system 1 will be explained using Figure 1. Figure 1 is a plan view of the solar power generation system 1 mounted on the roof 3, viewed from above.

[0032] As shown in Figure 1, four solar power generation devices 1 are installed on the roof 3. However, the number of solar power generation devices 1 installed on the roof 3 may be three or fewer, or five or more. The number of solar power generation devices 1 to be installed on the roof 3 can be determined by considering the relationship between the area of ​​the roof 3 and the area occupied by the solar power generation devices 1.

[0033] Roof 3 is a corrugated metal roof, with alternating peaks and valleys in the X direction (first direction), and each of the peaks and valleys extending in the Y direction (second direction).

[0034] Three rails 2 are fixed to the roof 3. Each of the three rails 2 extends in the first direction (X direction) and is arranged to be spaced apart from one another in the second direction (Y direction).

[0035] Each of the four solar power generation devices 1 comprises n (n: an even number of 4 or more) linear bodies 12 stretched between adjacent rails 2, and a power generation module 10. In this embodiment, the number of linear bodies n in each solar power generation device 1 is, for example, 8 (n=8). However, the number of linear bodies 12 is not limited to this, as long as it is an even number of 4 or more.

[0036] In each solar power generation device 1, the power generation module 10 is divided into a plurality of segments 11. In this embodiment, the power generation module 10 in each solar power generation device 1 is divided into five segments 11. Each segment 11 is supported by a linear body 12.

[0037] Each linear body 12 is anchored to the roof 3 via rails 2 at both ends in the Y direction. The eight linear bodies 12 provided on each solar power generation device 1 are arranged sequentially from one side to the other in the X direction, and are arranged so as not to intersect with each other. As an example, the linear bodies 12 are made of wire cables.

[0038] 2. Structure of each divided body 11 The structure of each divided body 11 will be explained using Figure 2.

[0039] As shown in Figure 2(a), each segment 11 of the power generation module 10 is composed of a flexible membrane 11a and a similarly flexible module body 11b. The membrane 11a is made of a material that has resistance to wind and rain, such as fluororesin materials such as ETFE (tetrafluoroethylene) ethylene copolymer or PTFE (polytetrafluoroethylene), polyvinyl chloride resin material or polyethylene resin material.

[0040] The membrane 11a has a membrane body portion 111 having an elongated strip shape in the X direction, and a membrane piece 112 disposed between the membrane body portion 111 and the linear body 12. The module body 11b is fixed to the outer surface 111a, which is one of the main surfaces of the membrane body portion 111 (arrow B1). The membrane piece 112 is fixed to the inner surface 111b, which is the other main surface of the membrane body portion 111, with the linear body 12 sandwiched between them. The fixing of the module body 11b to the outer surface 111a of the membrane body portion 111, and the fixing of the membrane piece 112 to the membrane body portion 111 are, for example, done using an adhesive.

[0041] The module body 11b is a device having a photoelectric conversion function. Power output wiring is connected to the module body 11b, but this is omitted from the diagrams attached to this specification.

[0042] In this embodiment, the module body 11b is supported on the linear body 12 via a membrane 11a. However, the module body 11b can also be directly attached to the linear body 12 without the membrane 11a. Nevertheless, the structure of this embodiment is preferable because the membrane 11a acts as a buffer against the load when the linear body 12 bends due to wind or other factors, thereby preventing damage to the module body 11b.

[0043] 3. The relative arrangement of the divided parts 11 The relative arrangement of the segmented parts 11 that make up the power generation module 10 will be explained using Figure 3. Note that Figure 3 shows only a part of the photovoltaic power generation device 1, but the other parts have a similar configuration.

[0044] As shown in Figure 3, each segment 11 passes over eight linear members 12 and is supported by the linear members 12 at each point of passage. Multiple segments 11 are arranged such that there are gaps G between adjacent segments 11 in the Y direction. The gaps G between segments 11 in the Y direction serve as an exhaust path for wind when wind blows between the roof 3 and the power generation module 10.

[0045] As shown in Figure 3, in this embodiment, the module body 11b is positioned so as to fit within the region between linear bodies 12 that are adjacent to each other in the X direction, relative to a strip-shaped membrane body 11a extending in the X direction. However, the arrangement of the module body 11b is not limited to this. For example, a module body 11b that passes over some of the linear bodies 12 in the X direction may be adopted.

[0046] 4. Connecting structure of linear body 12 The connecting structure of the linear body 12 will be explained further using Figure 3.

[0047] As described above, in this embodiment, each photovoltaic power generation device 1 is equipped with eight linear bodies 12. In the following description, in order of arrangement in the X direction, the eight linear bodies 12 are referred to as the first linear body 121, the second linear body 122, the third linear body 123, the fourth linear body 124, the fifth linear body 125, the sixth linear body 126, the seventh linear body 127, and the eighth linear body 128. Of these, linear bodies 122 to 127 are intermediate linear bodies, excluding the first linear body 121 and the eighth linear body 128 which are located on both outer sides in the arrangement in the X direction.

[0048] Each of the eight linear bodies 121 to 128 is stretched in the Y direction. In Figure 3, the first linear body 121 and the eighth linear body 128 are shown to have portions that extend diagonally with respect to the Y direction, but the first linear body 121 and the eighth linear body 128 do not necessarily have portions that extend diagonally as shown in Figure 3. That is, the first linear body 121 and the eighth linear body 128 may each be formed to extend linearly along the Y direction.

[0049] The second linear body 122 has diagonal extensions 122a and 122c that extend diagonally with respect to both the X and Y directions, and a rail-to-rail extension 122b that extends along the Y direction. The second linear body 122 is connected to the first linear body 121 adjacent to it on one side in the X direction at one end of the diagonal extensions 122a and 122c (connecting parts P1 and P2). The second linear body 122 is also connected to the third linear body 123 adjacent to it on the other side in the X direction at the other end of the diagonal extensions 122a and 122c (connecting parts P3 and P4).

[0050] As shown in the enlarged portion of Figure 3, at the connecting portion P3, the linear body 122 and the linear body 123 are connected by a connecting member JM. The linear bodies 122 and 123 connected by the connecting member JM are constrained so that they cannot be displaced relative to each other at the connecting portion P3. Although only the connecting portion P3 is shown in the enlarged portion of Figure 3, the linear bodies 12 are connected to each other in a similar configuration at the other connecting portions P1 to P2 and P4 to P14.

[0051] In the Y direction, the connecting portions P1 and P2 with the first linear body 121 adjacent to one side and the connecting portions P3 and P4 with the third linear body 123 adjacent to the other side are arranged in a positional relationship with a relative displacement.

[0052] The third linear body 123 has diagonal extensions 123a and 123c that extend diagonally with respect to both the X and Y directions, and a rail-to-rail extension 123b that extends along the Y direction. The third linear body 123 is connected to the second linear body 122 adjacent to it on one side in the X direction at one end of each of the diagonal extensions 123a and 123c (connecting parts P3 and P4). The third linear body 123 is also connected to the fourth linear body 124 adjacent to it on the other side in the X direction at the other end of each of the diagonal extensions 123a and 123c (connecting parts P5 and P6).

[0053] In the Y direction, the connecting portions P3 and P4 with the second linear body 122 adjacent to one side in the X direction and the connecting portions P5 and P6 with the fourth linear body 124 adjacent to the other side are arranged in a positional relationship with a relative offset.

[0054] In the photovoltaic power generation device 1, a hexagonal grid is formed by four linear bodies 121 to 124 arranged in the X direction, with the connecting parts P1 to P6 as vertices. The hexagonal grid is formed with the outer edges being the parts 122a to 122c between the connecting parts P1 to P4 of the second linear body 122, and the parts 123a to 123c between the connecting parts P3 to P6 of the third linear body 123.

[0055] The fourth linear body 124 has diagonal extensions 124a and 124c that extend diagonally with respect to both the X and Y directions, and a rail-to-rail extension 124b that extends along the Y direction. The fourth linear body 124 is connected to the third linear body 123 adjacent to it on one side in the X direction at one end of each of the diagonal extensions 124a and 124c (connecting parts P5 and P6). The fourth linear body 124 is also connected to the fifth linear body 125 adjacent to it on the other side in the X direction at the other end of each of the diagonal extensions 124a and 124c (connecting parts P7 and P8).

[0056] In the Y direction, the connecting portions P5 and P6 with the third linear body 123 adjacent to one side in the X direction and the connecting portions P7 and P8 with the fifth linear body 125 adjacent to the other side are arranged in a positional relationship with a relative offset.

[0057] The fifth linear body 125 has diagonal extensions 125a and 125c that extend diagonally with respect to both the X and Y directions, and a rail-to-rail extension 125b that extends along the Y direction. The fifth linear body 125 is connected to the fourth linear body 124 adjacent to it on one side in the X direction at one end of each of the diagonal extensions 125a and 125c (connecting parts P7 and P8). The fifth linear body 125 is also connected to the sixth linear body 126 adjacent to it on the other side in the X direction at one end of each of the diagonal extensions 125a and 125c (connecting parts P9 and P10).

[0058] In the Y direction, the connecting portions P7 and P8 with the fourth linear body 124 adjacent to one side in the X direction and the connecting portions P9 and P10 with the sixth linear body 126 adjacent to the other side are arranged in a positional relationship with a relative displacement.

[0059] In the photovoltaic power generation device 1, a hexagonal grid is formed by four linear bodies 123 to 126 arranged in the X direction, with the connecting parts P5 to P10 as vertices. The hexagonal grid is formed with the parts 124a to 124c between the connecting parts P5 to P8 of the fourth linear body 124, and the parts 125a to 125c between the connecting parts P7 to P10 of the fifth linear body 125 as its outer edges.

[0060] The sixth linear body 126 has diagonal extensions 126a and 126c that extend diagonally with respect to both the X and Y directions, and a rail-to-rail extension 126b that extends along the Y direction. The sixth linear body 126 is connected to the fifth linear body 125 adjacent to it on one side in the X direction at one end of each of the diagonal extensions 126a and 126c (connecting parts P9 and P10). The sixth linear body 126 is also connected to the seventh linear body 127 adjacent to it on the other side in the X direction at one end of each of the diagonal extensions 126a and 126c (connecting parts P11 and P12).

[0061] In the Y direction, the connecting parts P9 and P10 with the fifth linear body 125 adjacent to one side in the X direction and the connecting parts P11 and P12 with the seventh linear body 127 adjacent to the other side are arranged in a positional relationship with a relative displacement.

[0062] The seventh linear body 127 has diagonal extensions 127a and 127c that extend diagonally with respect to both the X and Y directions, and a rail-to-rail extension 127b that extends along the Y direction. The seventh linear body 127 is connected to the sixth linear body 126 adjacent to it on one side in the X direction at one end of each of the diagonal extensions 127a and 127c (connecting parts P11 and P12). The seventh linear body 127 is also connected to the eighth linear body 128 adjacent to it on the other side in the X direction at one end of each of the diagonal extensions 127a and 127c (connecting parts P13 and P14).

[0063] In the Y direction, the connecting parts P11 and P12 with the sixth linear body 126 adjacent to one side in the X direction and the connecting parts P13 and P14 with the eighth linear body 128 adjacent to the other side are arranged in a positional relationship with a relative displacement.

[0064] In the photovoltaic power generation device 1, a hexagonal grid is formed by four linear bodies 125 to 128 arranged in the X direction, with the connecting parts P9 to P14 as vertices. The hexagonal grid is formed with the outer edges being the parts 126a to 126c between the connecting parts P9 to P12 of the sixth linear body 126, and the parts 127a to 127c between the connecting parts P11 to P14 of the seventh linear body 127.

[0065] Although we have described a portion of the grid structure composed of the linear bodies 12 in the photovoltaic power generation device 1 in the Y direction, a grid is similarly formed in other parts of the Y direction, with the connecting parts P1 to P14 of the linear bodies 12 as vertices.

[0066] 5. Anchoring structure of the linear body 12 to the roof 3 The anchoring structure of the linear body 12 to the roof 3 will be explained using Figure 4. Although only some of the anchoring portions of the linear body 12 are shown in Figure 4, the other anchoring portions have a similar structure.

[0067] As shown in Figure 4(a), the roof 3 is mounted on a tight frame 4 fixed to the beam 6. The roof 3 is fixed to the tight frame 4 at multiple points using bolts BLT2 integrally provided on the tight frame 4. The rail 2 is placed on top of the roof 3. The rail 2 is fixed at multiple points to a fixed frame 5 extending in the Z direction using bolts BLT1.

[0068] The fixed frame 5 is secured to the beam 6 below the tight frame 4 using bolts BLT4 that pass through the valleys of the roof 3 and the tight frame 4 in the Z direction.

[0069] Each rail 2 is provided with a fixing frame 7 that secures the end of the linear body 12. The fixing frame 7 has a frame body portion 71 which has an inverted T shape in side view, and rollers 72 attached to the portion of the frame body portion 71 that is housed within the rail 2. The rollers 72 abut against the inner bottom surface 2a of the rail 2 and are capable of rolling on the inner bottom surface 2a. Therefore, the fixing frame 7 is movable along the longitudinal direction (Y direction) of the rail 2.

[0070] As shown in Figure 4(b), a threaded fitting 8 is used to secure the end 12a of the linear body 12 to the fixing frame 7. The threaded fitting 8 has a linear body fixing portion 8a and a male threaded portion 8b. The linear body fixing portion 8a of the threaded fitting 8 has a cylindrical shape.

[0071] The linear body 12 is fixed to the threaded fitting 8 by inserting its end 12a into the cylinder of the linear body fixing portion 8a of the threaded fitting 8 and compressing the linear body fixing portion 8a from the radially outer side.

[0072] The frame body portion 71 of the anchoring frame 7 has a through hole 71a that penetrates in the Y direction. The screw-type fitting 8 is fixed to the anchoring frame 7 by inserting the male threaded portion 8b through the through hole 71a and screwing the nut NT onto the male threaded portion 8b. The anchoring frame 7 is configured so that the tension of the linear body 12 can be adjusted by the degree to which the nut NT is tightened onto the male threaded portion 8b.

[0073] In this manner, the linear body 12 is fixed to the roof 3.

[0074] Furthermore, for the eight linear bodies 12 provided by each photovoltaic power generation device 1, excluding the linear bodies 12 located on both outer sides in the X direction (the first linear body 121 and the eighth linear body 128), the ends 12a of adjacent linear bodies 12 in the X direction may be fixed to one fixing frame 7. Specifically, the ends 12a of adjacent linear bodies 12 in the arrangement direction of the linear bodies 12 may be fixed to one fixing frame 7. This reduces the number of fixing frames 7 and thus reduces manufacturing costs.

[0075] 6. Installation of solar power generation device 1 on roof 3 The procedure for installing the solar power generation device 1 on the roof 3 will be explained using Figures 2 to 4.

[0076] As shown in Figure 4(a), the fixing frames 5 are placed on each valley of the roof 3 and the tight frame 4, and the fixing frames 5 are secured to the beams 6 using bolts BLT 4.

[0077] Next, the rails 2 are placed on the raised section of the roof 3, and the rails 2 are fixed to the fixing frame 5 using bolts BLT1.

[0078] On the other hand, as explained using Figure 2(a), a divided body 11, in which a module body 11b is fixed to the outer surface 111a of the membrane body portion 111 of the membrane body 11a, is fixed to eight linear bodies 12. A power generation module 10 is fixed to the outer surface 111a of the membrane body portion 111 of each membrane body 11a.

[0079] Furthermore, as explained using Figure 4(b), a threaded fitting 8 is fixed to the end 12a of each linear body 12. In addition, the end 12a of each linear body 12 is fixed to the fixing frame 7 via each threaded fitting 8. At this time, a predetermined tension can be applied to the linear body 12 by screwing the nut NT onto the male threaded portion 8b of the threaded fitting 8.

[0080] As described above, the assembly unit, which consists of each segment 11 of the power generation module 10, the linear body 12, the screw fitting 8, and the anchoring frame 7, is attached to the rail 2 on the roof 3. In this case, when attaching the anchoring frame 7 to the rail 2, the spacing between the linear bodies 12 can be narrowed and the segment 11 can be folded, as shown by arrow B2 in Figure 2(b). By folding the segment 11 in this way, the size can be made more compact. Therefore, compared to the case where the assembly unit including the segment 11 is handled and attached to the rail 2 in the unfolded state shown in Figure 3, higher work efficiency can be achieved.

[0081] After attaching the assembly unit to the rail 2, the rollers 72 of the anchoring frame 7 are rolled on the inner bottom surface 2a of the rail 2 to bring the assembly unit into the unfolded state shown in Figure 2. Then, the anchoring frame 7 is fixed to the rail 2 using bolts BLT3 to prevent it from moving undesirably along the rail 2.

[0082] As described above, the installation of the solar power generation device 1 on the roof 3 is complete.

[0083] 7. Effects In the photovoltaic power generation device 1 according to this embodiment, the intermediate linear bodies 122 to 127, excluding the two linear bodies 121 and 128 located on both outer sides in the X direction among the n linear bodies 12, each have diagonally extended portions 122a, 122c, 123a, 123c, 124a, 124c, 125a, 125c, 126a, 126c, 127a, and 127c, respectively. Each of the intermediate linear bodies 122-127 is connected to an adjacent linear body 12 on one side in the X direction at one end of the diagonally extending portion 122a, 122c, 123a, 123c, 124a, 124c, 125a, 125c, 126a, 126c, 127a, 127c, and is connected to an adjacent linear body 12 on the other side in the X direction at the other end of the diagonally extending portion 122a, 122c, 123a, 123c, 124a, 124c, 125a, 125c, 126a, 126c, 127a, 127c. Therefore, as shown in Figure 5, even when a localized uplift load C1 is applied, the Y-direction component of the applied load is distributed to adjacent linear bodies 12 on both sides in the X-direction, which are connected at both ends of the diagonally extended sections 122a, 122c, 123a, 123c, 124a, 124c, 125a, 125c, 126a, 126c, 127a, and 127c. Therefore, in the photovoltaic power generation device 1 according to this embodiment, even when a localized updraft load C1 is applied, the applied load C1 is sequentially distributed to the eight linear bodies 12 arranged in the X direction, and then distributed to each anchoring point of the eight linear bodies 12 (each end 121d, 123d, 124d, 125d, 126d, 127d, 128d, 121e, 122e, 123e, 124e, 125e, 126e, 127e, 128e) (distributed loads C2 to C11). Consequently, the photovoltaic power generation device 1 according to this embodiment suppresses the concentration of load on some of the linear bodies 12.

[0084] The load distribution described above is due to each intermediate linear body 122-127 having diagonally extended portions 122a, 122c, 123a, 123c, 124a, 124c, 125a, 125c, 126a, 126c, 127a, 127c, and being connected to adjacent linear bodies 12 in the X direction at the ends of the diagonally extended portions 122a, 122c, 123a, 123c, 124a, 124c, 125a, 125c, 126a, 126c, 127a, 127c. With this configuration, as described above, even when a localized uplift load C1 is applied, the load is sequentially distributed to the eight linear bodies 121-128 via the connecting portions P1-P14.

[0085] Therefore, in the photovoltaic power generation device 1, the locally applied updraft load C1 is distributed and transmitted to each end 121d, 123d, 124d, 125d, 126d, 127d, 128d, 121e, 122e, 123e, 124e, 125e, 126e, 127e, and 128e of the eight linear bodies 121 to 128.

[0086] On the other hand, as shown in the comparative example in Figure 6, the intermediate linear bodies 922-924 do not have diagonally extending portions that extend in directions oblique to both the X and Y directions, and adjacent linear bodies 921-925 in the X direction are connected only via the membrane 911. In this case, the locally applied uplift load D1 is distributed only to the linear bodies 921, 924, and 925 adjacent to each other in the X direction via the membrane 911 (distributed loads D6-D11), and is not distributed as in the structure in this embodiment where the linear bodies 12 are connected to each other. Therefore, in the comparative example structure, a large load is transmitted to the linear bodies 922 and 923 to which the uplift load D1 is applied (loads D2-D5). And only the minute loads D6-D11 transmitted via the membrane 911 are transmitted to the other linear bodies 921, 924, and 925. Therefore, in the comparative example solar power generation device 9, when a localized updraft load D1 is applied, a large load D2 to D5 is applied only to the ends 922e, 922f, 923e, and 923f of each end (anchoring part) 921e to 925e and 921f to 925f of each linear body 921 to 925, raising concerns about damage to the anchoring points of the ends 922e, 922f, 923e, and 923f on the roof 3.

[0087] Therefore, in the photovoltaic power generation device 1 according to this embodiment, even when a localized updraft load C1 is applied to the photovoltaic power generation device 9 according to the comparative example described above, the load C2 to C11 is efficiently distributed to the eight linear bodies 121 to 128, thereby suppressing damage to the anchoring points at the ends 121d to 128d and 121e to 128e of the roof 3.

[0088] It is also possible to assume a structure in which linear bodies extending in the X direction are arranged in relation to the structure shown in Figure 6, and these linear bodies connect the linear bodies 921 to 925. However, even in this structure, since it does not adopt a structure in which the diagonally extending portion of the intermediate linear body connects to adjacent linear bodies in the X direction as in this embodiment, the load distribution shown in Figure 5 cannot be achieved. In other words, the locally applied uplift load acts only on the linear bodies in the region where the uplift load is applied, and is transmitted only in the X and Y directions, respectively. Therefore, even if the load transmitted in the X direction reaches the linear bodies 921 and 925, since it is only the load component in the X direction, it is not distributed to the respective ends 921d, 921e, 924d, 924e, 924e, 925d, and 925e of the linear bodies 921, 924, and 925 to which the uplift load is not applied.

[0089] In the photovoltaic power generation device 1 according to this embodiment, a flexible linear body 12 is used, so the divided body 11 can be folded up during or before construction, making it compact for transport and also superior in terms of ease of handling.

[0090] Furthermore, in the solar power generation device 1 according to this embodiment, a fixing frame 7 that is movable in the X direction relative to the rail 2 is provided, and the ends 121d to 128d and 121e to 128e of the linear bodies 121 to 128 are fixed to the fixing frame 7. Therefore, when installing the solar power generation device 1, both ends 121d to 128d and 121e to 128e can be moved along the rail 2 together with the fixing frame 7. Thus, in the solar power generation device 1, when installing, as shown in Figure 2(b), the fixing frame 7 is attached to the rail 2 with the divided body 11 folded, and then unfolded. This reduces the amount of work (such as handling) required on the roof 3 compared to when the device is pre-unfolded and positioned along the roof 3.

[0091] Furthermore, in the solar power generation device 1 according to this embodiment, adjacent segmented bodies 11 are arranged with a gap G between them in the Y direction, so that even if wind blows between the roof 3 and the power generation module 10, the wind can escape through the gap G. Therefore, in the solar power generation device 1, even if wind blows between the roof 3 and the segmented bodies 11, it is possible to suppress the application of a large load to the anchoring portions of the linear bodies 121 to 128 to the roof 3.

[0092] Furthermore, in the photovoltaic power generation device 1 according to this embodiment, the linear bodies 121 to 128 are arranged and connected in such a way that a plurality of hexagonal grids are arranged in a matrix when viewed from a plan view from a direction perpendicular to both the X and Y directions (third direction). Therefore, even if a localized uplift load C1 is applied, the load C1 is efficiently distributed to the eight linear bodies 121 to 128 as shown by the arrows in Figure 5 (distributed loads C2 to C11).

[0093] As described above, the solar power generation device 1 according to this embodiment is installed on the roof 3 of a building, and even if a localized uplift load C1 is applied, damage to the anchoring points of the linear bodies 121 to 128 on the roof 3 is suppressed.

[0094] [Second Embodiment] The configuration of the photovoltaic power generation device 1 according to the second embodiment will be explained with reference to Figure 7. Note that the photovoltaic power generation device 1 according to this embodiment differs from the first embodiment only in the arrangement of the linear bodies 121-128 and the structure of the connections between them; the other structures are the same as those of the first embodiment. Therefore, Figure 7 only shows the linear bodies 121-128 of the configuration of the photovoltaic power generation device 1. Furthermore, only the arrangement of the linear bodies 121-128 and the structure of the connections between them, which are differences from the first embodiment, will be explained below.

[0095] As shown in Figure 7, the photovoltaic power generation device 1 according to this embodiment also comprises eight linear members 121 to 128. The eight linear members 121 to 128 are also fixed to the roof 3 at both ends 121d to 128d and 121e to 128e.

[0096] In this embodiment as well, the eight linear bodies 121 to 128 are distinguished as the first linear body 121, the second linear body 122, the third linear body 123, the fourth linear body 124, the fifth linear body 125, the sixth linear body 126, the seventh linear body 127, and the eighth linear body 128, according to their arrangement in the X direction. In the arrangement in the X direction, the intermediate linear bodies 122 to 127, excluding the outermost first linear body 121 and the eighth linear body 128, are intermediate linear bodies.

[0097] The intermediate linear body, the second linear body 122, has oblique extensions 122a and 122c that extend in directions oblique to both the X and Y directions. The second linear body 122 is connected to the first linear body 121 adjacent to it on one side in the X direction at one end of each of the oblique extensions 122a and 122c (connecting part P22). The second linear body 122 is also connected to the third linear body 123 adjacent to it on the other side in the X direction at the other end of each of the oblique extensions 122a and 122c (connecting parts P21 and P23). In this embodiment as well, the linear bodies 121 to 128 are connected in connecting parts P21 to P30 in the same configuration as shown in the enlarged portion of Figure 3. That is, in each of the connecting parts P21 to P30, the linear bodies are constrained so that relative displacement cannot occur in the connecting parts P21 to P30 by being connected by a connecting member JM.

[0098] In the Y direction, connecting portion P22 and connecting portions P21 and P23 are positioned in a relative positional relationship with a displacement between them.

[0099] The third linear body 123 has oblique extensions 123a and 123c that extend in directions oblique to both the X and Y directions. The third linear body 123 is connected to the second linear body 122 adjacent to it on one side in the X direction at one end of each of the oblique extensions 123a and 123c (connecting parts P21 and P23). The third linear body 123 is also connected to the fourth linear body 124 adjacent to it on the other side in the X direction at the other end of each of the oblique extensions 123a and 123c (connecting part P25).

[0100] In the Y direction, connecting parts P21, P23 and connecting part P22 are positioned in a relative positional relationship with a displacement between them.

[0101] In the photovoltaic power generation device 1, a rhombic grid is formed by four linear bodies 121 to 124 arranged in the X direction, with the connecting parts P21 to P23 and P25 as vertices. The rhombic grid is formed with the parts 122a and 122b between the connecting parts P21 to P23 of the second linear body 122, and the parts 123a and 123b between the connecting parts P21, P23, and P25 of the third linear body 123 as its outer edges.

[0102] The fourth linear body 124 has oblique extensions 124a and 124c that extend in directions oblique to both the X and Y directions. The fourth linear body 124 is connected to the third linear body 123 adjacent to it on one side in the X direction at one end of each of the oblique extensions 124a and 124c (connecting part P25). The fourth linear body 124 is also connected to the fifth linear body 125 adjacent to it on the other side in the X direction at the other ends of each of the oblique extensions 124a and 124c (connecting parts P24 and P26).

[0103] In the Y direction, connecting portion P25 and connecting portions P24 and P26 are positioned in a relative positional relationship with a displacement between them.

[0104] The fifth linear body 125 has oblique extensions 125a and 125c that extend in directions oblique to both the X and Y directions. The fifth linear body 125 is connected to the fourth linear body 124 adjacent to it on one side in the X direction at one end of each of the oblique extensions 125a and 125c (connecting parts P24 and P26). The fifth linear body 125 is also connected to the sixth linear body 126 adjacent to it on the other side in the X direction at the other end of each of the oblique extensions 125a and 125c (connecting part P28).

[0105] In the Y direction, connecting parts P24, P26 and connecting part P28 are positioned in a relative positional relationship with a displacement between them.

[0106] The sixth linear body 126 has oblique extensions 126a and 126c that extend in directions oblique to both the X and Y directions. The sixth linear body 126 is connected to the fifth linear body 125 adjacent to it on one side in the X direction at one end of each of the oblique extensions 126a and 126c (connecting part P28). The sixth linear body 126 is also connected to the seventh linear body 127 adjacent to it on the other side in the X direction at the other ends of each of the oblique extensions 126a and 126c (connecting parts P27 and P29).

[0107] In the Y direction, connecting portion P28 and connecting portions P27 and P29 are positioned in a relative positional relationship with a displacement between them.

[0108] In the photovoltaic power generation device 1, a rhombic grid is formed by four linear bodies 123 to 126 arranged in the X direction, with connecting parts P24 to P26 and P28 as vertices. The rhombic grid is formed with the outer edges being the parts 124a and 124b between the connecting parts P24 to P26 of the fourth linear body 124, and the parts 125a and 125b between the connecting parts P24, P26, and P28 of the fifth linear body 125.

[0109] The seventh linear body 127 has oblique extensions 127a and 127c that extend in directions oblique to both the X and Y directions. The seventh linear body 127 is connected to the sixth linear body 126 adjacent to it on one side in the X direction at one end of each of the oblique extensions 127a and 127c (connecting parts P27 and P29). The seventh linear body 127 is also connected to the eighth linear body 128 adjacent to it on the other side in the X direction at the other end of each of the oblique extensions 127a and 127c (connecting part P30).

[0110] In the Y direction, connecting parts P27, P29 and connecting part P30 are positioned in a relative positional relationship with a displacement between them.

[0111] In the photovoltaic power generation device 1, a rhombic grid is formed by four linear bodies 125 to 128 arranged in the X direction, with the connecting parts P27 to P30 as vertices. The rhombic grid is formed with the parts 126a and 126c between the connecting parts P27 to P29 of the sixth linear body 126, and the parts 127a and 127c between the connecting parts P27, P29, and P30 of the seventh linear body 127 as its outer edges.

[0112] In the photovoltaic power generation device 1, a grid structure composed of linear bodies 12 has been described by focusing on a portion in the Y direction. However, in other parts of the Y direction, a grid structure is similarly formed with the connecting parts of the linear bodies 12 as vertices. In these grids as well, the tension of the connected linear bodies 121 to 128 is balanced.

[0113] As described above, the arrangement and connection structure of the linear bodies 121-128 in the photovoltaic power generation device 1 is such that, when the entire device is viewed from above, each of the multiple rhombus-shaped grids has a portion that extends diagonally, and both ends of these diagonally extending portions 122a, 122c, 123a, 123c, 124a, 124c, 125a, 125c, 126a, 126c, 127a, and 127c are connected to adjacent linear bodies 12. Therefore, in the photovoltaic power generation device 1 according to this embodiment, even if a localized updraft load is applied to the power generation module 10, the load is distributed to the ends 121d, 122d, 123d, 124d, 125d, 126d, 127d, 128d, 121e, 122e, 123e, 124e, 125e, 126e, 127e, and 128e of each linear body 121 to 128.

[0114] Therefore, the photovoltaic power generation device 1 according to this embodiment can obtain the same effects as the first embodiment described above.

[0115] [Example 1] The configuration of the photovoltaic power generation device 1 according to Modification 1 will be explained with reference to Figure 8. Note that the number of segmented bodies 11 constituting the power generation module 10 and their arrangement differ from the first embodiment, while other configurations are the same as the first embodiment. Therefore, the following will explain the differences from the first embodiment, namely the number and arrangement of the segmented bodies 11.

[0116] As shown in Figure 8, in the photovoltaic power generation device 1 according to this modified example, the power generation module 10 is divided into eight segments 11. Although the division of the power generation module 10 in the photovoltaic power generation device 1 according to this modified example differs from that of the first embodiment, the other configurations, including the configuration of the segments 11 themselves, are the same as those of the first embodiment.

[0117] As described above, the photovoltaic power generation device 1 according to this modified example comprises a power generation module 10 consisting of eight segmented bodies 11. The eight segmented bodies 11 are not supported by all eight linear bodies 121 to 128, but only by some of the linear bodies 121 to 128. Specifically, the photovoltaic power generation device 1 comprises segmented bodies 11 fixed only to the first linear body 121 to the fourth linear body 124, segmented bodies 11 supported only to the fifth linear body 125 to the eighth linear body 128, and segmented bodies 11 supported only to the second linear body 122 to the seventh linear body 127.

[0118] In the photovoltaic power generation device 1 employing the arrangement of the divided body 11 as described above, there is a region in the X direction where the divided body 11 is not present (gap BA).

[0119] In this modified example, a gap G is left between adjacent segments 11 in the Y direction. Therefore, in the photovoltaic power generation device 1 according to this modified example, the eight segments 11 are arranged such that gaps BA and G are left between adjacent segments 11 in both the X and Y directions.

[0120] As described above, the modified photovoltaic power generation device 1 differs from the first embodiment in the division configuration of the power generation module 10, but the other configurations are the same, and the same effects as the first embodiment can be obtained. Furthermore, the configuration of this modified example can also be applied to the photovoltaic power generation device 1 according to the second embodiment, and the same effects can be obtained in that case as well.

[0121] Furthermore, in the modified photovoltaic power generation device 1, a region is provided in which a gap BA is left between adjacent divided bodies 11 in the X direction, and a gap G is provided between adjacent divided bodies 11 in the Y direction. Therefore, even if wind blows between the roof 3 and the divided bodies 11, the wind can escape through the gaps BA and G. Thus, in the modified photovoltaic power generation device 1, even if wind blows between the roof 3 and the divided bodies 11, it is possible to suppress the application of a large load to the anchoring portions of the linear bodies 121 to 128 to the roof 3.

[0122] [Differentiation 2] The configuration of the photovoltaic power generation device 1 according to Modification 2 will be explained with reference to Figure 9. Note that the support structure of the divided body 11 to the linear body 12 in the modified photovoltaic power generation device 1 differs from that of the first embodiment, but the other configurations are the same as those of the first embodiment. Also, although only a portion of the photovoltaic power generation device 1 is shown in Figure 9, the parts omitted from the illustration are also constructed with a similar structure.

[0123] As shown in Figure 9, the divided body 11, which has a rectangular shape in plan view, has hook holes 113 provided at the four corners of the membrane 11a. The hook holes 113 in the membrane 11a are formed by eyelet processing.

[0124] The segmented body 11 is supported by the linear body 12 by a hook 13 that is stretched between the hook-hanging hole 113 and the connecting parts P5, P6, P9, and P10 located near the corner where the hook-hanging hole 113 is provided.

[0125] As described above, the photovoltaic power generation device 1 according to this modified example differs from the first embodiment in the support structure of the divided body 11 to the linear body 12, but the other configurations are the same, and the same effects as the first embodiment can be obtained.

[0126] Furthermore, in the photovoltaic power generation device 1 according to this modified example, the segmented body 11 is supported on the linear body 12 via the hook 13, so the segmented body 11 that is initially supported can be removed later, or the segmented body 11 can be attached later to the area that was initially designated as a gap BA (see Figure 8). Therefore, it is possible to modify the device appropriately after construction in accordance with various environmental conditions.

[0127] Furthermore, the configuration of this modified example can also be applied to the photovoltaic power generation device 1 according to the second embodiment described above, and the same effects as described above can be obtained in those cases as well.

[0128] [Difference 3] The configuration of the photovoltaic power generation device 1 according to Modification 3 will be explained with reference to Figure 10. In the modified photovoltaic power generation device 1, the structure of some of the power generation modules 101 and 102 differs from that of the first embodiment, while the other configurations are the same as those of the first embodiment.

[0129] As shown in Figure 10, the photovoltaic power generation device 1 according to this modified example includes a segmented body 11 that is arranged to straddle some of the linear bodies 12 in a plan view and has a length in the X direction that is longer than the other module bodies 10b. Specifically, the photovoltaic power generation device 1 includes a segmented body 11 having a module body 11b arranged to straddle the fourth linear body 124 and the fifth linear body 125 (the front side of the page in Figure 10) in the row indicated by arrow E2. The photovoltaic power generation device 1 also includes a segmented body 11 having a module body 11b arranged to straddle the third linear body 123 to the sixth linear body 126 in the row indicated by arrow E3.

[0130] On the other hand, the segmented bodies 11 arranged in the row indicated by arrow E1 do not have a module body 11b that is arranged to straddle the linear body 12.

[0131] As described above, the photovoltaic power generation device 1 according to this modified example differs from the first embodiment in that, as described above, the size of the module body 11b is not the same for all power generation modules 10, and the device includes a segmented body 11 having some module bodies 11b of different sizes. However, the other configurations are the same, and the same effects as the first embodiment can be obtained.

[0132] Furthermore, in the photovoltaic power generation device 1 according to this modified example, by adopting a configuration in which the module body 11b straddles at least a portion of the intermediate linear bodies 122 to 127, it is possible to appropriately select the module size in the X direction, thereby ensuring a high degree of freedom in module selection.

[0133] Furthermore, the configuration of this modified example can also be applied to the photovoltaic power generation device 1 according to the second embodiment described above, and to the photovoltaic power generation device 1 according to the modified examples 1 and 2 described above, and in that case the same effects as described above can be obtained.

[0134] Furthermore, the relationship between the size of the module body 11b and its placement location is not limited to the configuration shown in Figure 10.

[0135] [Differentiation Example 4] The configuration of the photovoltaic power generation device 1 according to Modification 4 will be explained with reference to Figure 11. Note that the photovoltaic power generation device 1 according to Modification 4 differs from the first embodiment in that the fixing frame 7 is directly fixed to the roof (exterior material) 3, but the other configurations are the same as those of the first embodiment.

[0136] As shown in Figure 11, the anchoring frame 7 of the photovoltaic power generation device 1 according to this modified example is not attached to the rail 2 as in the first embodiment, but is directly fixed to the roof 3. The anchoring frame 7 is fixed to the roof 3 by screwing bolts BLT5, which are inserted through the valleys of the roof 3 and the tight frame 4, into the beam 6. As described above, the modified photovoltaic power generation device 1 differs from the first embodiment in that the fixing frame 7 is directly fixed to the roof 3, but the other configurations are the same, and the same effects as the first embodiment can be obtained.

[0137] Furthermore, the configuration of this modified example can also be applied to the photovoltaic power generation device 1 according to the second embodiment described above, and to the photovoltaic power generation device 1 according to the modified examples 1 to 3 described above, and in that case the same effects as described above can be obtained.

[0138] [Other variations] In the first embodiment, the second embodiment, and the modifications 1 to 4 described above, a solar power generation device 1 mounted on a roof 3 was used as an example, but the present invention can also be applied to a solar power generation device 1 mounted on an exterior wall.

[0139] Furthermore, in the first embodiment, the second embodiment, and the modifications 1 to 4 described above, the photovoltaic power generation device 1 is provided with eight linear bodies 12, but in the present invention, it is sufficient to provide n (n: an even number of 4 or more) linear bodies 12.

[0140] Furthermore, in the first embodiment, the second embodiment, and the modifications 1 to 4 described above, both the membrane 11a and the module body 11b are flexible. However, in the present invention, the membrane 11a and the module body 11b do not necessarily need to be flexible.

[0141] Furthermore, in the first embodiment, the second embodiment, and the modifications 1 to 4 described above, the linear body 12 is fixed to the roof 3 via the fixing frame 7. However, in the present invention, the linear body 12 may be directly fixed to the exterior material such as the roof 3 without using the fixing frame 7.

[0142] Furthermore, in this invention, instead of fixing the anchoring frame 7 on the roof 3 as in the modified example 4 above, the anchoring frame 7 may be fixed to the eaves portion of the exterior wall.

[0143] Furthermore, while wire cables were used as an example of the linear body 12 in the first embodiment, the second embodiment, and the 1-4 modifications described above, the present invention is not limited to the linear body 12 made of wire cables. For example, galvanized steel wire, fiber rope, etc., may be used.

[0144] Furthermore, in the first embodiment, the second embodiment, and the modified examples 1 to 4 described above, a connection configuration is employed in which, at each connecting portion P1 to P14, P21 to P30 of the linear body 12, two adjacent linear bodies 12 are connected by a connecting member JM, thereby constraining the linear bodies 12 connected at each connecting portion P1 to P14, P21 to P30 so that they cannot be displaced relative to each other. However, the present invention is not limited thereto. A configuration can also be adopted in which the linear body 12 is constrained to be in a state where it can be displaced relative to the linear body 12 connected at the connecting portions P1 to P14, P21 to P30. [Explanation of Symbols]

[0145] 1. Solar power generation system 2 rails 3. Roof (exterior materials) 10 power generation modules 11 Split body 11a Membrane body 11b Module body 12,121~128 linear body 122a,122c,123a,123c,124a,124c,125a,125c,126a,126c,127a,127c Diagonal extensions P1~P14,P21~P30 connection part

Claims

1. A solar power generation device that is installed on the exterior material of a building, Each of the n (n: an even number of 4 or more) linear bodies is flexible and arranged in sequence in a first direction along the outer surface of the exterior material, A power generation module supported by the aforementioned n linear bodies, which converts solar energy into electricity, Equipped with, Each of the n linear bodies is fixed and stretched at both ends at locations in the exterior material that are spaced apart in a second direction intersecting the first direction. When, of the n linear bodies, the linear bodies other than the two linear bodies located on both outer sides in the first direction are defined as intermediate linear bodies, In a plan view from a third direction perpendicular to the outer surface of the exterior material, each of the intermediate linear bodies has an obliquely extending portion that extends in a direction oblique to both the first and second directions. Each of the intermediate linear bodies is connected to a linear body adjacent to it on one side in the first direction at one end of the diagonal extension portion, and is connected to a linear body adjacent to it on the other side in the first direction at the other end of the diagonal extension portion. Solar power generation equipment.

2. Two rails are fixed to the exterior material, each extending in the first direction and spaced apart from each other in the second direction, A plurality of anchoring frames are arranged on each of the two rails and configured to be movable in the first direction along the rails, Furthermore, Each of the n linear bodies is fixed at both ends to the anchoring frame positioned on one of the two rails and to the anchoring frame positioned on the other of the two rails. The solar power generation apparatus according to claim 1.

3. The aforementioned power generation module is A membrane having flexibility and having a strip shape in plan view, each extending in the first direction, and stretched between at least two of the n linear bodies, A module body that is flexible, has a photoelectric conversion function, and is fixed to the film body, Equipped with, The photovoltaic power generation device according to claim 2.

4. The power generation module has a plurality of segments that are divided from each other, The plurality of divisions are arranged with gaps between adjacent members in at least one of the first and second directions. The photovoltaic power generation device according to claim 3.

5. At least a portion of the plurality of divisions is arranged such that, in the plan view, the module body straddles at least a portion of the intermediate linear body. The photovoltaic power generation device according to claim 4.

6. The n linear bodies are arranged and connected such that, in a plan view from the third direction, they form a plurality of hexagonal grids or a plurality of rhombic grids arranged in a matrix. A solar power generation device according to any one of claims 1 to 5.

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