Fitting structure for film type photovoltaic power generation device, jacket material with film type photovoltaic power generation device, and structure

Abstract

To provide a fitting structure for a film type photovoltaic power generation device that has easy workability at low cost, and enables a photovoltaic power generation device to be easily replaced when deteriorating, and also to provide a jacket material with the film type photovoltaic power generation device that uses the fitting structure and a structure.SOLUTION: A fitting structure for a film type photovoltaic power generation device 1 provides a method of fitting the film type photovoltaic power generation device 1 to a surface of a jacket material 7 joined to a roof skeleton 9 of a structure, and is characterized in fixing the film type photovoltaic power generation device 1 with an end side part of the film type photovoltaic power generation device 1 held between a cap member 13 arranged to cover a joint part 11 joining the jacket material 7 to the roof skeleton 9 and the jacket material 7.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an attachment structure of a film-type solar power generation device to an exterior material of a structure, an exterior material with a film-type solar power generation device using the attachment structure, and a structure.

Background Art

[0002] In recent years, as a solution to the problem of greenhouse gas emissions such as carbon dioxide due to the use of fossil fuels, the use of natural energy has been recommended. Examples of natural energy include hydraulic power, wind power, geothermal energy, tidal power, etc. In the construction industry, solar power generation devices are often used because of their ease of installation on structures.

[0003] As solar power generation devices, there are panel types with a large plate thickness and high rigidity, and film types (thin film types) with a small plate thickness and low rigidity, and both types have been installed on structures. An example of a method for attaching a solar power generation device to a structure is disclosed in Patent Documents 1 and 2, for example.

[0004] The method of Patent Document 1 is characterized in that a unit is created by integrating a roof body having a bent portion and a solar cell, and a plurality of the units are combined and fixed to a roof structural member by a detachable fixture. The method of Patent Document 2 is characterized in that a frame is created on a roof, and a thin film type solar cell is inserted and held in the frame.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] In Patent Document 1, a photovoltaic power generation device is directly joined to a roofing material to form a unit. However, the durability of a crystalline photovoltaic power generation device is said to be about 20 to 25 years, and there is a large durability gap with the roofing material that is required for long-term use. Therefore, even during the service life of the roofing material, it is necessary to replace the photovoltaic power generation device due to aging deterioration or the like of the photovoltaic power generation device. However, since the photovoltaic power generation device and the roofing material are integrated, it is necessary to replace the entire roofing material, which is costly and time-consuming. There is also a problem that it cannot be easily installed on an existing roof.

[0007] On the other hand, in the method of Patent Document 2, since both side ends of a thin-film type photovoltaic power generation device are slidably held by a frame provided on the roofing material, the replacement of the photovoltaic power generation device is easy. However, since the thin-film type photovoltaic power generation device has low rigidity, there is a risk that the photovoltaic power generation device may be deformed and come out of the frame and scatter during a storm. In addition, since it is necessary to previously provide a frame for holding the photovoltaic power generation device on the roof, the steel plate used for the roof or the outer wall has to be formed into a special shape, increasing the manufacturing cost of the roof or the outer wall. Furthermore, the number of members increases, and the load of on-site construction also increases.

[0008] In addition to Patent Documents 1 and 2, for example, as an attachment structure of a film type photovoltaic power generation device, there is also a method of directly joining the photovoltaic power generation device to the exterior material of a structure with an adhesive. However, when joining with an adhesive, it is laborious to remove the photovoltaic power generation device from the roof when replacing the photovoltaic power generation device. In addition, there is also the labor of removing the adhesive adhering to the exterior material after removal.

[0009] The present invention has been made to solve the above problems, and an object thereof is to provide an attachment structure for a film type photovoltaic power generation device that realizes easy constructability with cost suppression and enables easy replacement when the photovoltaic power generation device deteriorates. Another object is to provide an exterior material and a structure with a film type photovoltaic power generation device using the attachment structure.

Means for Solving the Problems

[0010] (1) The mounting structure of the film-type solar power generation device according to the present invention is for mounting the film-type solar power generation device on the surface of the exterior material joined to the structural body of the structure, and is characterized in that: A cap member is disposed so as to cover the joint portion where the exterior material is joined to the structural body, and the film-type solar power generation device is fixed by sandwiching the edge portion of the film-type solar power generation device between the cap member and the exterior material.

[0011] (2) Further, in the structure described in (1) above, among a pair of the film-type solar power generation devices arranged on both sides with the cap member interposed therebetween, one of the film-type solar power generation devices covers the upper surface of the cap member, and the edge portions of the one film-type solar power generation device and the other film-type solar power generation device are overlapped and sandwiched between the covered cap member and the exterior material.

[0012] (3) Further, in the structure described in (1) above, a mounting fitting having a through hole is provided at the edge portion of the film-type solar power generation device, and the film-type solar power generation device is fixed by inserting a bolt or a screw for joining the exterior material to the structural body through the through hole.

[0013] (4) Further, in the structure described in (3) above, when the structural body is a roof body, and the joint portion is constituted by a tight frame fixed to the roof body and a hanger fixed to the tight frame with bolts and nuts, a mounting fitting having a through hole is provided at the edge portion of the film-type solar power generation device, and the film-type solar power generation device is fixed by inserting the bolt through the through hole.

[0014] (5) Further, in the case of the one described in (3) above, when the structural body is a wall body and the joint portion is formed by fixing the recessed portion on the wall body side of the exterior material to the wall body with the screws, Providing a mounting fitting having a through hole at the edge portion of the film-type solar power generation device, Characterized in that the film-type solar power generation device is fixed by inserting the screw through the through hole.

[0015] (6) Further, in the case of the one described in (1) above, arranging a pressing fitting having a through hole so as to press the edge portion of the film-type solar power generation device, Characterized in that the film-type solar power generation device is fixed by inserting a bolt or a screw for joining the exterior material to the structural body through the through hole.

[0016] (7) Further, in the case of the one described in (6) above, when the structural body is a roof body and the joint portion is formed by a tight frame fixed to the roof body and a hanger fixed to the tight frame with bolts and nuts, Characterized in that the edge portion of the film-type solar power generation device is sandwiched between a pressing fitting having a through hole and the hanger, and the pressing fitting, the hanger and the tight frame are fastened with the bolt inserted through the through hole to fix the film-type solar power generation device.

[0017] (8) Further, in the case of the one described in (6) above, when the structural body is a wall body and the joint portion is formed by fixing the protruding portion on the wall body side of the exterior material to the wall body with the screws, Characterized in that the edge portion of the film-type solar power generation device is sandwiched between a pressing fitting having a through hole and the exterior material, and the exterior material is fixed to the wall body with the screw inserted through the through hole to fix the film-type solar power generation device.

[0018] (9) Further, in the case of the above-described (1), where the structural body is a roof body, and the joint portion is constituted by a tight frame fixed to the roof body and a hanger fixed to the tight frame with bolts and nuts, The tight frame and the hanger sandwich the edge portion of the film-type solar power generation device to fix the film-type solar power generation device.

[0019] (10) Further, the exterior material with a film-type solar power generation device according to the present invention is characterized in that the film-type solar power generation device is attached to the exterior material by the attachment structure according to any one of (1) to (9) above.

[0020] (11) Further, the structure according to the present invention includes an exterior material with a film-type solar power generation device, The exterior material with a film-type solar power generation device is characterized in that the film-type solar power generation device is attached to the exterior material by the attachment structure according to any one of claims 1 to 9.

Effect of the Invention

[0021] In the present invention, since the film-type solar power generation device is fixed using a cap member generally disposed at the joint portion between the structural body of the structure and the exterior material, the film-type solar power generation device can be easily attached without incurring costs. Further, since the film-type solar power generation device attached by the attachment structure of the present invention is also easy to remove, the film-type solar power generation device can be easily replaced when the film-type solar power generation device deteriorates over time.

[0022] Furthermore, by sandwiching the film-type solar power generation device between the cap member and the exterior material, the watertightness of this portion is improved, making it difficult for rainwater to enter the inside of the cap member. As a result, the members for joining the exterior material to the structural body of the structure and the screw holes provided in the structural body are less likely to corrode.

Brief Description of the Drawings

[0023]

Figure 1

Figure 2

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Figure 8

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Figure 10

Figure 11

Figure 12

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Figure 14

Figure 15

Figure 16

Embodiments for Carrying Out the Invention

[0024] [Embodiment 1] The mounting structure of the film-type solar power generation device of the present embodiment is a structure for mounting the film-type solar power generation device on the surface of the exterior material joined to the structural body such as the roof portion or wall portion of the structure. Here, the structure refers to a structure having a roof and columns or walls among the structures fixed to the ground. That is, the structures of the present embodiment include, in addition to general buildings, structures such as the upper part of a platform. First, the film-type solar power generation device 1 used in the present embodiment will be described below.

[0025] As shown in FIG. 2, the film-type solar power generation device 1 has a rectangular and thin film shape, and is composed of a thin film-shaped power generation layer 3 and a protective layer 5 that protects the power generation layer 3 from rain and the like. Here, examples of the power generation layer 3 include organic thin film solar cells and perovskite solar cells. Further, examples of the material of the protective layer 5 include fluororesin with high light transmittance and high durability, or a film containing fluororesin with polyimide or polyethylene terephthalate as a base material.

[0026] The protective layer 5 is formed so as to cover the front and back surfaces of the power generation layer 3, and is attached to the power generation layer 3 with a heat-sealing adhesive. Further, the protective layer 5 is formed so as to protrude from the outer peripheral end of the power generation layer 3 by a predetermined distance so that rain does not enter, and thus the power generation layer 3 is in a state of being sealed by the protective layer 5. As described above, the film-type solar power generation device 1 shown in FIG. 2 has a very small bending rigidity due to its thin shape as a whole. In particular, the outer peripheral portion of the film-type solar power generation device 1 is formed only of the film-shaped protective layer 5, and thus has flexibility. In the following description, when referring to the "edge portion of the film-type solar power generation device 1", it refers to the above-mentioned outer peripheral portion, that is, the portion formed only of the protective layer 5 (the thin gray portion in FIG. 2(a)).

[0027] Next, the structure for attaching the above-described film-type solar power generation device 1 to the surface of the exterior material of the structure will be described below with reference to FIGS. 1 to 5. The attachment structure of the present embodiment is characterized in that the film-type solar power generation device 1 is fixed using a cap member 13 generally disposed at a joint portion 11 for joining the exterior material to the structural frame of the structure. Therefore, first, the structure of the joint portion 11 in the example of FIG. 1 and the cap member 13 disposed at the joint portion 11 will be described in detail.

[0028] As the structural frame, a roof frame and a wall frame are assumed. FIG. 1 is a diagram showing an example of attaching the film-type solar power generation device 1 to the surface of the exterior material 7 installed on the roof frame. FIG. 1(a) shows the state before attachment, clearly showing the arrangement relationship of each member, and FIG. 1(b) shows the state after attachment. In addition, partial enlarged views of the joint portion 11 in FIGS. 1(a) and 1(b) are shown in FIGS. 3 and 4, respectively.

[0029] The exterior material 7 is rectangular in plan view, and FIG. 1 shows the state as viewed from the short side of the exterior material 7. That is, the horizontal direction in the drawing is the width direction of the exterior material 7, and the depth direction in the drawing is the longitudinal direction of the exterior material 7, which is the same in FIGS. 8 to 16.

[0030] As shown in FIG. 1(a), on the roof frame 9 which is the structural frame of the structure, tight frames 15 are arranged at predetermined intervals. The tight frame 15 is a member that holds the exterior material 7 together with the suspension 17, and has a trapezoidal portion 15a with a trapezoidal cross section and flange portions 15b extending from both sides of the trapezoidal portion 15a, and the flange portions are fixed to the roof frame 9. Bolts 19 for fixing the suspension 17 to the tight frame 15 are provided in advance at the upper bottom portion of the trapezoidal portion in the tight frame 15.

[0031] The exterior material 7 is composed of folded thin steel plates, is arranged along the roof body 9 between the tight frames 15, and the left and right side edges are arranged up to the upper bottom along the tight frame 15. At the end of the side edge of the exterior material 7, a rising part 7a rising from the upper bottom of the tight frame 15 and a folded part 7b folded back in an L shape from the rising part 7a are formed.

[0032] The rising parts 7a of the exterior material 7 arranged on the left and right of the tight frame 15 are arranged facing each other with a predetermined gap therebetween as shown in FIGS. 1(a) and 3, and a hanger 17 is arranged in the gap. The hanger 17 has a groove-shaped part 17a with a rectangular groove cross-section and a folded part 17b folded back outward in an L shape from the upper end of the groove wall of the groove-shaped part 17a. This folded part 17b is arranged so as to overlap the folded part 7b of the exterior material 7 in the installed state of the hanger 17.

[0033] When the hanger 17 is arranged between the rising parts 7a of the exterior material 7 arranged on the left and right of the tight frame 15, the rising part 7a and the groove wall, and the folded part 7b and the folded part 17b overlap each other. In this state, by fixing the hanger 17 to the tight frame 15 with bolts 19 and nuts 21, the exterior material 7 is joined to the roof body 9. Thus, the joint part 11 for joining the exterior material 7 to the roof body 9 is composed of the tight frame 15 holding the exterior material 7 and the hanger 17.

[0034] After joining the exterior material 7 to the roof body 9, a cap member 13 is attached to the joint part 11. The cap member 13 is made of a resin or a metal elastic body, and as shown in FIGS. 1 and 3, has a substantially dome-shaped cross-section with an opening at the lower part, and has engaging parts 13a that engage with the folded parts 7b of the exterior material 7 arranged on the left and right of the tight frame 15 on both sides of the opening. When attaching the cap member 13, it is placed so as to cover the joint portion 11 and pushed in. As a result, the cap member 13 is elastically deformed and the opening expands, and then, by elastic recovery, the engaging portions 13a on both sides engage with the folded-back portion 7b of the exterior material 7, and the cap member 13 is fitted to the joint portion 11. By attaching the cap member 13, it is possible to prevent members such as the hanger 17 and the bolt 19 and the roof body 9 from being exposed to rain and prevent them from corroding.

[0035] As described above, generally, a cap member 13 for preventing corrosion of the members used for joining and the roof body 9 is attached to the joint portion 11 that joins the exterior material 7 to the roof body 9. Therefore, in the present embodiment, the film-type solar power generation device 1 is fixed using this cap member 13.

[0036] Specifically, the hanger 17 is fixed to the tie frame 15, and after the exterior material 7 is joined to the roof body 9, the end side portion of the film-type solar power generation device 1 is disposed at the joint portion 11, and the cap member 13 is attached so as to sandwich this between the cap member 13 and the exterior material 7. As a result, as shown in FIG. 4, the end side portion of the film-type solar power generation device 1 is sandwiched between the cap member 13 and the exterior material 7, and the cap member 13 and the hanger 17, and the film-type solar power generation device 1 can be easily fixed.

[0037] As described above, by fixing the opposing end side portions of the film-type solar power generation device 1 at the adjacent joint portions 11, the film-type solar power generation device 1 can be attached to the surface of the exterior material 7 as shown in FIG. 5. Note that the width of the film-type solar power generation device 1 is made larger than the width of the exterior material 7 so that the end side portion can be sandwiched between the cap member 13 and the exterior material 7. Also, in the case of the rectangular film-type solar power generation device 1 as shown in FIG. 2, when the end side portion of the long side portion is fixed as shown in FIG. 5, the fixing force becomes high, which is preferable.

[0038] In the attached state, as shown in Fig. 1(b), the film-type photovoltaic device 1 is stretched in a state floating from the exterior material 7 between the joints 11. Therefore, when a load due to snow accumulation or wind and rain acts on the film-type photovoltaic device 1, a force is generated that pulls out the edge portion of the film-type photovoltaic device 1. Therefore, it is desirable to fix the film-type photovoltaic device 1 with a fixing force that can withstand these loads so that the film-type photovoltaic device 1 is not pulled out from the joint 11 and does not fall off.

[0039] If it is assumed that the load acting on the film-type photovoltaic device 1 is extremely small, the film-type photovoltaic device 1 may be inserted up to about half the width of the cap member 13 as shown in Fig. 3, the cap member 13 may be attached, and the film-type photovoltaic device 1 may be fixed. In this case, as shown in Fig. 4, the edge portion of the film-type photovoltaic device 1 is sandwiched between the engaging portion 13a on one side of the cap member 13 and the exterior material 7. That is, the edge portion of the film-type photovoltaic device 1 arranged on the left side of the tight frame 15 is sandwiched between the exterior material 7 arranged on the left side of the tight frame 15 and the engaging portion 13a on the left side of the cap member 13. Also, the edge portion of the film-type photovoltaic device 1 arranged on the right side of the tight frame 15 is sandwiched between the exterior material 7 arranged on the right side of the tight frame 15 and the engaging portion 13a on the right side of the cap member 13.

[0040] On the other hand, when it is assumed that the load acting on the film-type photovoltaic device 1 is large, the film-type photovoltaic device 1 may be inserted so as to span the engaging portions 13a on both sides of the cap member 13, and the cap member 13 may be attached (not shown). In this case, at the two engaging portions where the cap member 13 and the exterior material 7 engage, the edge portions of the film-type photovoltaic devices 1 arranged on the left and right of the tight frame 15 are sandwiched in a state where they overlap each other. By doing so, since the edge portions of the film-type photovoltaic device 1 are sandwiched at two locations, the film-type photovoltaic device 1 can be fixed more firmly.

[0041] Further, the shape of the engaging portion between the cap member 13 and the exterior material 7, or between the cap member 13 and the hanging member 17 may be adjusted to further enhance the fixing force. Additionally, the cap member 13 and the edge portion of the film-type solar power generation device 1 may be adhered using an adhesive, adhesive tape, or the like. Also, the exterior material 7 and the edge portion of the film-type solar power generation device 1 may be adhered in the same manner. Furthermore, the edge portion of the film-type solar power generation device 1 may be adhered to both the cap member 13 and the exterior material 7 in the same manner. Also, members that mechanically apply friction (such as packing materials, friction members, etc.) may be interposed at these parts, or anti-slip protrusions may be provided on the cap member 13 or the hanging member 17 to prevent the edge portion of the film-type solar power generation device 1 from slipping out. In that case, the number and size of the protrusions, etc. can be adjusted according to the magnitude of the load acting on the film-type solar power generation device 1.

[0042] Note that although FIGS. 1, 3, and 4 show the shape of a general exterior material 7, in this embodiment, it is only necessary that the edge portion of the film-type solar power generation device 1 can be sandwiched between the exterior material 7 and the cap member 13, and the shape of the exterior material 7 is not limited. Therefore, for example, as shown in FIGS. 6 and 7, the upper part of the rising portion 7b may be bent into a triangular shape. Also in this case, when fitting the cap member 13 to this part, the edge portion of the film-type solar power generation device 1 can be sandwiched and fixed.

[0043] In the above, an example of attaching the film-type solar power generation device 1 to the exterior material 7 joined to the roof housing 9 has been described. As another aspect, in the case where the structural housing is a wall housing, an example of attaching the film-type solar power generation device 1 will be described with reference to FIG. 8. FIG. 8(a) shows the state before attachment that clearly shows the arrangement relationship of each member, and FIG. 8(b) shows the state after attachment. First, the joining structure of the joining portion 11 in the example of FIG. 8 and the cap member 23 disposed at the joining portion 11 will be described.

[0044] FIG. 8 shows a state in which a vertical cross-section of the wall body of the exterior material 27 in the joined state is viewed from the width direction of the exterior material 27. In the example shown in FIG. 8, a plurality of exterior materials 27 are joined in a state where the width-direction ends are overlapped. As shown in FIG. 8(a), each exterior material 27 has a substantially L-shaped bent portion at both ends, which consists of an inclined piece portion 27a bent obliquely toward the wall body 25 side and a horizontal piece portion 27b bent horizontally continuously with the inclined piece portion 27a. Then, the horizontal piece portions 27b of adjacent exterior materials are overlapped, and this portion is fixed to the wall body 25 by screws 29 via a washer or a metal fitting (not shown) for fixing the cap. Further, an engaging step portion 27c for engaging with the cap member 23 is formed on the inclined piece portion 27a.

[0045] When observing the exterior material 27 joined to the wall body 25, portions that are recessed in a groove shape at predetermined intervals in the width direction of the exterior material 27 are formed, and this portion is fixed to the wall body 25 by screws 29 to constitute the joint portion 11, and the cap member 23 is installed so as to cover this joint portion 11.

[0046] The cap member 23 is made of a resin or a metal elastic body, and as shown in FIG. 8(a), it has a flat top surface portion and side wall portions extending from both sides of the top surface portion so as to approach each other, and has a shape in which an opening is formed between the lower ends of both side wall portions. And the side wall portion has an engaging portion 23a that engages with the engaging step portion 27c of the exterior material 27. When installing the cap member 23, it is arranged and pushed in so as to cover the joint portion 11. As a result, the cap member 23 is elastically deformed and the opening is narrowed, and then, by elastic recovery, the engaging portions 23a on both sides engage with the engaging step portion 27c of the exterior material 27, and the cap member 23 is fitted to the joint portion 11.

[0047] By fitting the cap member 23 to the joint portion 11, as shown in FIG. 8(b), the surface of the exterior material 27 and the top surface portion of the cap member 23 become substantially flush, resulting in a flat appearance. In addition, by disposing the cap member 23 at the joint portion 11, the joint portion 11 is protected from rain or the like, and corrosion of the screw 29 and the screw holes formed in the wall housing 25 can be prevented.

[0048] The exterior material 27 shown in FIG. 8 had substantially L-shaped bent portions at both ends of a substantially flat surface, but there may be a case where a groove-shaped concave portion is formed between both ends. In this case as well, the concave portion is fixed to the wall housing 25 with the screw 29, and further, the cap member 23 is disposed.

[0049] As described above, also in the exterior material 27 provided on the wall portion of the structure, generally, the cap member 23 is disposed at the joint portion 11. Also in the exterior material 27 in such a mode, similarly to the example of FIG. 1, the edge portion of the film-type solar power generation device 1 can be fixed by sandwiching it between the cap member 23 and the exterior material 27.

[0050] Specifically, when installing the cap member 23 on the joint portion 11 fixed with the screw 29, the edge portion of the film-type solar power generation device 1 is sandwiched between the cap member 23 and the exterior material 27. Thereby, as shown in FIG. 8(b), the edge portion of the film-type solar power generation device 1 is sandwiched between the cap member 23 and the exterior material 27, and the film-type solar power generation device 1 can be easily fixed. Note that the edge portion to be sandwiched preferably has a length that overlaps at least the engaging step portion 27c of the exterior material 27 so as to be more firmly sandwiched.

[0051] As described above, the present embodiment fixes the film-type solar power generation device 1 by using a cap member that is generally disposed at the joint portion 11 for joining the exterior material to the structural housing. Therefore, the film-type solar power generation device 1 can be easily attached to the surfaces of the exterior material 7 provided on the roof portion of the structure and the exterior material 27 provided on the wall portion without incurring costs.

[0052] In addition, since it is not necessary to provide special members on the exterior materials 7 and 27 in this embodiment, the film-type solar power generation device 1 can be easily attached to existing roofs and walls as well.

[0053] Furthermore, since the film-type solar power generation device 1 can be easily removed simply by removing the cap members 13 and 23, when the film-type solar power generation device 1 malfunctions or deteriorates over time, the film-type solar power generation device 1 can be easily replaced without affecting the exterior materials 7 and 27.

[0054] Also, by sandwiching the edge portion of the film-type solar power generation device 1 between the cap member 13 and the exterior material 7 (or between the cap member 23 and the exterior material 27), the waterproofness of this portion is improved and rainwater is less likely to enter the joint portion 11. As a result, the members constituting the joint portion 11 (such as the hanger 17, the tight frame 15, the screws 29, etc.) and the structural housing are less likely to corrode.

[0055] [Embodiment 2] In Embodiment 1, a method of fixing the film-type solar power generation device 1 using the engaging portions 13a on both the left and right sides of the cap member 13 was described. In this embodiment, as another fixing method, a method of fixing the film-type solar power generation device 1 using only one of the engaging portions 13a on the left or right side of the cap member 13 will be described.

[0056] FIG. 9 is a diagram showing an example of attaching the film-type solar power generation device 1 to the exterior material 7 joined to the roof housing 9. Since the structure of the joint portion 11 for joining the exterior material 7 to the roof housing 9 is the same as that in FIG. 1, the same reference numerals are given and the description thereof is omitted. In the example of Fig. 9, among the pair of film-type solar power generation devices 1 arranged on both sides of the cap member 13, one film-type solar power generation device 1 covers the upper surface of the cap member 13, and between the engaging portion 13a on the right side in the figure of the covered cap member 13 and the exterior material 7, the edge portions of the pair of film-type solar power generation devices 1 are overlapped and clamped. Fig. 9 shows an example in which the edge portions of the two film-type solar power generation devices 1 are fixed by the engaging portion 13a on the right side of the cap member 13, but they can also be fixed in the same manner by the engaging portion 13a on the left side of the cap member 13.

[0057] In the mounting structure described in Embodiment 1, the film-type solar power generation device 1 is not disposed on the upper surface of the cap member 13 (see Fig. 5), but in the mounting structure of this embodiment, the film-type solar power generation device 1 can also be disposed on the upper surface of the cap member 13. Therefore, the area of the surface of the film-type solar power generation device 1 that receives sunlight can be increased, and the power generation amount can be increased. Also in this case, as in Embodiment 1, it is advisable to use an adhesive or interpose a packing material to prevent the film-type solar power generation device 1 from coming off due to the load of snow, wind, rain, etc.

[0058] As shown in Fig. 10, the mounting structure of the present embodiment described above can also be applied when mounting the film-type solar power generation device 1 on the exterior material 27 joined to the wall structure 25. In Fig. 10, since the structure of the joint portion 11 for joining the exterior material 27 to the wall structure 25 is the same as that in Fig. 8, the same reference numerals are given and the description is omitted.

[0059] In Fig. 10, between the inclined piece portion 27a of the exterior material 27 arranged on the right side of the cap member 23 and the side wall portion on the right side in the figure of the cap member 23, the edge portions of the film-type solar power generation devices 1 arranged on the left and right of the cap member 23 are overlapped and clamped. Therefore, similar to Fig. 9, the film-type solar power generation device 1 can also be disposed on the upper surface of the cap member 23, and the sunlight-receiving area of the film-type solar power generation device 1 can be increased.

[0060] In addition, in FIGS. 9 and 10 described above, an example of fixing both end sides of the film-type solar power generation device using all the joints 11 is shown. However, it is not always necessary to use all the joints 11 for fixing the film-type solar power generation device 1. For example, as shown in FIG. 11, of the three joints 11 in the figure, the left and right two joints 11 may be used for fixing the film-type solar power generation device 1, and the central joint 11 may be covered by the film-type solar power generation device 1 without being used for fixing the film-type solar power generation device 1.

[0061] In this way, in the case of the film-type solar power generation device 1 with a large size, the film-type solar power generation device 1 may be fixed between the separated joints 11. In addition, the upper surface of the cap member 23 of the central joint 11 may be adhered to the lower surface of the film-type solar power generation device 1 to prevent the film-type solar power generation device 1 from coming off, or the construction effort may be reduced without adhesion.

[0062] The above is not limited to the mounting structure of Embodiment 2, and can be similarly applied to the mounting structures of other embodiments. For example, in FIGS. 1 and 8 of Embodiment 1, an example of fixing the film-type solar power generation device 1 between adjacent joints 11 is shown. Also in this case, when using the film-type solar power generation device 1 with a large size, the film-type solar power generation device 1 can be fixed between the separated joints 11.

[0063] [Embodiment 3] As described above, in the film-type solar power generation device 1 sandwiched and fixed between the exterior material 7 and the cap member 13, a force that pulls out the film-type solar power generation device 1 is generated due to the action of snow accumulation and the loads of wind and rain. As countermeasures, there are methods of interposing a packing material in the portion that sandwiches the film-type solar power generation device 1 or using an adhesive. However, when the acting load is particularly large, there is a risk that the film-type solar power generation device 1 cannot be sufficiently prevented from coming out by the above methods. Therefore, in this embodiment, an aspect that can surely prevent the film-type solar power generation device 1 from coming out even when a large load acts due to snow accumulation and wind and rain will be described.

[0064] FIG. 12 is a view showing an example of attaching the film-type solar power generation device 1 to the exterior material 7 joined to the roof body 9. In the attachment structure of the film-type solar power generation device 1 according to the present embodiment, as shown in FIG. 12(a), an attachment fitting 31 is provided at the edge portion of the film-type solar power generation device 1. A through hole (not shown) through which the shaft of the bolt 19 can be inserted is formed in the attachment fitting 31.

[0065] When joining the exterior material 7 to the roof body 9, that is, when fixing the hanger 17 to the tight frame 15, the film-type solar power generation device 1 can be mechanically fixed by inserting the bolt 19 through the through hole of the attachment fitting 31 and then tightening the nut 21 onto the bolt 19. Then, after fastening the hanger 17, the tight frame 15, and the attachment fitting 31 as described above, by attaching the cap member 13 to the joint portion 11, the edge portion of the film-type solar power generation device 1 is clamped between the cap member 13 and the exterior material 7, and the fixing force is further improved.

[0066] In the present embodiment, since the attachment fitting 31 provided on the film-type solar power generation device 1 is mechanically fixed to the bolt 19 of the joint portion 11, even if a large load due to snow accumulation or wind and rain acts, the film-type solar power generation device 1 will not come out from the joint portion 11. Although FIG. 12 shows an example in which the attachment fitting 31 is arranged between the hanger 17 and the nut 21, the attachment fitting 31 may be arranged between the hanger 17 and the tight frame 15.

[0067] The attachment structure of the present embodiment described above can also be applied when attaching the film-type solar power generation device 1 to the exterior material 27 joined to the wall body 25, as shown in FIG. 13. In this case, as shown in FIG. 13, the screw 29 is inserted through the through-hole of the mounting fitting 31, and the exterior material 27 is joined to the wall body 25 with this screw 29, whereby the film-type solar power generation device 1 can be mechanically fixed. After joining the exterior material 27 to the wall body 25, by attaching the cap member 23 to this joint portion 11, the edge portion of the film-type solar power generation device 1 is sandwiched between the cap member 23 and the exterior material 27, and the fixing force is further improved.

[0068] As described above, in this embodiment, the mounting fitting 31 is provided at the edge portion of the film-type solar power generation device 1, and by fixing this mounting fitting 31 to the bolt 19 or the screw 29 of the joint portion 11, it is possible to reliably prevent the film-type solar power generation device 1 from coming off.

[0069] Also in the mounting structure described with reference to FIGS. 12 and 13, by sandwiching a packing member or the like at the portion that sandwiches the edge portion of the film-type solar power generation device 1, the fixing force can be further increased, and the watertightness of this portion can be improved.

[0070] [Embodiment 4] Although the above-described Embodiment 3 can reliably prevent the film-type solar power generation device 1 from coming off, this method requires that the mounting fitting 31 be attached to the film-type solar power generation device 1 in advance. Therefore, in this embodiment, an aspect in which the film-type solar power generation device 1 can be firmly fixed without providing a fitting to the film-type solar power generation device 1 will be described.

[0071] FIG. 14 is a diagram showing an example of attaching the film-type solar power generation device 1 to the exterior material 7 joined to the roof body 9. In the mounting structure of the film-type solar power generation device 1 according to this embodiment, as shown in FIG. 14(a), a substantially rectangular pressing fitting 33 in which a through-hole (not shown) through which the shaft of the bolt 19 can be inserted is formed is used.

[0072] The pressing fixture 33 is arranged to press the edge portion of the film-type solar power generation device 1 against the groove bottom of the hanger 17. When joining the exterior material 7 to the roof housing 9, with the edge portion of the film-type solar power generation device 1 inserted between the pressing fixture 33 and the hanger 17, the hanger 17 is fixed to the tight frame 15 with bolts 19 inserted through the through holes of the pressing fixture 33. Thereby, the pressing fixture 33 is fixed, and the edge portion of the film-type solar power generation device 1 is clamped between the pressing fixture 33 and the hanger 17. After fastening the pressing fixture 33, the hanger 17, and the tight frame 15 as described above, by attaching the cap member 13 to this joint portion 11, the film-type solar power generation device 1 is further clamped between the cap member 13 and the exterior material 7.

[0073] In the method of FIG. 14, since the edge portion of the film-type solar power generation device 1 can be clamped by the fastening force of the bolts 19 and the nuts 21, even if a large load acts due to snow accumulation or wind and rain, it can strongly resist the force to pull out the film-type solar power generation device 1.

[0074] The mounting structure of the present embodiment described above can also be applied when attaching the film-type solar power generation device 1 to the exterior material 27 joined to the wall housing 25, as shown in FIG. 15. In FIG. 15(b), the pressing fixture 33 is arranged to press the edge portion of the film-type solar power generation device 1 against the horizontal piece portion 27b of the exterior material 27. When joining the exterior material 27 to the wall housing 25, with the edge portion of the film-type solar power generation device 1 inserted between the pressing fixture 33 and the exterior material 27, the exterior material 27 is fixed to the wall housing 25 with screws 29 inserted through the through holes of the pressing fixture 33. Thereby, the pressing fixture 33 is fixed by the screws 29, and the edge portion of the film-type solar power generation device 1 is clamped between the pressing fixture 33 and the exterior material 27. After fixing the pressing fixture 33 and the exterior material 27 with the screws 29 as described above, by attaching the cap member 23 to this joint portion 11, the film-type solar power generation device 1 is further clamped between the cap member 23 and the exterior material 27.

[0075] In the mounting structure of FIG. 15, since the end portion of the film-type solar power generation device 1 can be clamped by the tightening force of the screw 29, even if a large load acts due to snow accumulation, wind, rain, etc., it can strongly resist the force for pulling out the film-type solar power generation device 1.

[0076] As described above, in this embodiment, the pressing metal fitting 33 is arranged to press the end portion of the film-type solar power generation device 1, and by fixing the pressing metal fitting 33 to the structural housing (roof housing 9, wall housing 25) with the bolt 19 or the screw 29, a strong fixing force can be exhibited.

[0077] [Embodiment 5] In Embodiment 4, an example of fixing the end portion of the film-type solar power generation device 1 using the pressing metal fitting 33 was described. However, when the joint portion 11 is composed of the hanger 17 and the tight frame 15, the pressing metal fitting 33 can be omitted. Such an example is shown in FIG. 16.

[0078] FIG. 16 is a diagram showing an example of attaching the film-type solar power generation device 1 to the exterior material 7 joined to the roof housing 9. In this embodiment, as shown in FIG. 16(a), the end portion of the film-type solar power generation device 1 is arranged between the hanger 17 and the tight frame 15.

[0079] When joining the exterior material 7 to the roof housing 9, as shown in FIG. 16(b), with the end portion of the film-type solar power generation device 1 sandwiched between the hanger 17 and the tight frame 15, the hanger 17 is fixed to the tight frame 15. By doing so, the end portion of the film-type solar power generation device 1 is clamped between the tight frame 15 and the hanger 17. After fixing the hanger 17 to the tight frame 15, by attaching the cap member 13 to this joint portion 11, the film-type solar power generation device 1 is further clamped between the cap member 13 and the exterior material 7.

[0080] The mounting structure shown in Fig. 16 clamps the edge portion of the film-type solar power generation device 1 by the fastening force of the bolts 19 and nuts 21, similar to Fig. 14. However, since it does not require a pressing metal fitting 33, it is cost-effective and easier to construct. Also in this case, similar to Fig. 14, the film-type solar power generation device 1 can be firmly fixed.

[0081] As described above, the mounting structure of the film-type solar power generation device 1 exemplified in Embodiments 1 to 5 fixes the film-type solar power generation device 1 by using the cap member 13 and the cap member 23 that are generally attached to the joint portion 11. Therefore, it is cost-effective and easy to construct. In addition, the film-type solar power generation device 1 can be easily attached to existing roofs and outer walls.

[0082] Also, it is necessary to connect a cable for supplying the generated electricity to a power conditioner or a storage battery to the film-type solar power generation device 1. In the present invention, however, this cable can be housed inside the cap member 13 or the cap member 23. In this way, there is no need to arrange the cable on the surface of the exterior material 7 or the exterior material 27, and the cable can be protected from rain and wind.

[0083] Furthermore, when the film-type solar power generation device 1 deteriorates over time, the film-type solar power generation device 1 can be easily removed. For example, the film-type solar power generation device 1 attached as shown in Fig. 1(b) can be removed by simply removing the cap member 13, so the film-type solar power generation device 1 can be easily replaced.

[0084] Also, by using any of the mounting structures described in the above Embodiments 1 to 5 and attaching a film-type solar power generation device to an exterior material at a construction site or the like, an exterior material with a film-type solar power generation device using the mounting structure of the present invention can be obtained.

[0085] Moreover, by constructing a structure using the exterior material with the film-type solar power generation device described above, a structure equipped with the exterior material with the film-type solar power generation device using the mounting structure of the present invention can be obtained.

Explanation of Signs

[0086] 1 Film-type solar power generation device 3 Power generation layer 5 Protective layer 7 Exterior material (for roof) 7a Rising part 7b Folded-back part 9 Roof body 11 Joint part 13 Cap member (for roof) 13a Engaging part 15 Tight frame 15a Trapezoidal part 15b Flange part 17 Hanger 17a Grooved part 17b Folded-back part 19 Bolt 21 Nut 23 Cap member (for wall) 23a Engaging part 25 Wall body 27 Exterior material (for wall) 27a Inclined piece part 27b Horizontal piece part 27c Engaging step part 29 Screw 31 Mounting fitting 33 Pressing fitting

Claims

1. An attachment structure for a film-type photovoltaic power generation device, which attaches a film-type photovoltaic power generation device to the surface of an exterior material joined to the structural body of a structure, a cap member disposed so as to cover a joint portion where the exterior material is joined to the structural body, and between the exterior material and the film-type photovoltaic power generation device, the edge portion of the film-type photovoltaic power generation device is sandwiched to fix the film-type photovoltaic power generation device. The attachment structure of the film-type photovoltaic power generation device is characterized by this.

2. Among a pair of the film-type photovoltaic power generation devices arranged on both sides with the cap member interposed therebetween, one film-type photovoltaic power generation device covers the upper surface of the cap member, and between the covered cap member and the exterior material, the edge portion of the one film-type photovoltaic power generation device and the edge portion of the other film-type photovoltaic power generation device are overlapped and sandwiched. The attachment structure of the film-type photovoltaic power generation device according to claim 1 is characterized by this.

3. An attachment fitting having a through hole is provided at an edge portion of the film-type photovoltaic power generation device, The bolt or screw for joining the exterior material to the structural body is inserted into the through hole to fix the film-type photovoltaic power generation device. The attachment structure of the film-type photovoltaic power generation device according to claim 1 is characterized by this.

4. When the structural body is a roof body, and the joint portion is constituted by a tight frame fixed to the roof body and a hanger fixed to the tight frame with bolts and nuts, An attachment fitting having a through hole is provided at an edge portion of the film-type photovoltaic power generation device, The bolt is inserted into the through hole to fix the film-type photovoltaic power generation device. The attachment structure of the film-type photovoltaic power generation device according to claim 3 is characterized by this.

5. When the structural body is a wall body, and the joint portion is constituted by a portion recessed on the wall body side of the exterior material being fixed to the wall body with screws, An attachment fitting having a through hole is provided at an edge portion of the film-type photovoltaic power generation device, The screw is inserted into the through hole to fix the film-type photovoltaic power generation device. The attachment structure of the film-type photovoltaic power generation device according to claim 3 is characterized by this.

6. A pressing fitting having a through hole is arranged so as to press the edge portion of the film-type photovoltaic power generation device, The mounting structure of the film-type solar power generation device according to claim 1, characterized in that bolts or screws for joining the exterior material to the structural body are inserted through the through holes to fix the film-type solar power generation device.

7. When the structural body is a roof body, and the joint portion is constituted by a tight frame fixed to the roof body and a hanger fixed to the tight frame with bolts and nuts, The mounting structure of the film-type solar power generation device according to claim 6, characterized in that a pressing metal fitting having a through hole and the hanger sandwich the edge portion of the film-type solar power generation device, and the bolts inserted through the through holes fasten the pressing metal fitting, the hanger, and the tight frame to fix the film-type solar power generation device.

8. When the structural body is a wall body, and the joint portion is constituted by a portion protruding on the wall body side of the exterior material being fixed to the wall body with screws, The mounting structure of the film-type solar power generation device according to claim 6, characterized in that a pressing metal fitting having a through hole and the exterior material sandwich the edge portion of the film-type solar power generation device, and the screws inserted through the through holes fix the exterior material to the wall body to fix the film-type solar power generation device.

9. When the structural body is a roof body, and the joint portion is constituted by a tight frame fixed to the roof body and a hanger fixed to the tight frame with bolts and nuts, The mounting structure of the film-type solar power generation device according to claim 1, characterized in that the edge portion of the film-type solar power generation device is sandwiched between the tight frame and the hanger to fix the film-type solar power generation device.

10. An exterior material with a film-type solar power generation device, characterized in that the film-type solar power generation device is attached to the exterior material by the mounting structure according to any one of claims 1 to 9.

11. A structure provided with an exterior material with a film-type solar power generation device, The exterior material with a film-type solar power generation device is a structure characterized in that the film-type solar power generation device is attached to the exterior material by the mounting structure according to any one of claims 1 to 9.

Images