Integrated Solar Cell Casing

Abstract

The present invention provides a solar cell-integrated exterior material that protects the adhesive portion that fixes the solar cell from ultraviolet rays and rainwater, thereby suppressing the deterioration of adhesive strength during its service life. [Solution] The solar cell integrated exterior material 1 according to the present invention comprises an exterior material substrate 5, a solar cell module 7, and a cap member 11. The exterior material substrate 5 has horizontal portions 5c of approximately equal height and locking portions for locking the cap member 11 at both ends. The solar cell module 7 is arranged so as to span at least between the horizontal portions 5c, and its side ends are attached via a first adhesive layer 13 to the region where the horizontal portions 5c are located in a plan view. The cap member 11, when locked to the slanted edge portion 5e of one exterior material substrate 5 and the slanted edge portion 5e of the other exterior material substrate 5, functions as a sunshade member that covers at least the side ends of the attachment area of ​​the solar cell module 7 and blocks sunlight.

Description

Technical Field

[0001] The present invention relates to a metallic exterior material for a structure, and particularly to a solar cell integrated exterior material in which an exterior material substrate and a film-like or sheet-like solar cell module are integrated.

Background Art

[0002] Towards carbon neutrality in 2050, the spread of solar power generation is expected. However, suitable sites for constructing large-scale solar power plants are decreasing, and while installation on buildings and the like is required, there are also technical problems such that it is not easy to install on existing houses and buildings with a small roof load capacity, or on the walls of houses and buildings.

[0003] As a method for installing solar cells on a building, for example, there are a method of installing a pedestal on a roof and arranging crystalline solar cell panels, and a method of building in solar cells in a roofing material. In addition, as a method for installing solar cells in places other than the roof, there are methods such as attaching a film-type solar cell typified by a visible light transmissive organic thin film solar cell (hereinafter referred to as OPV) to glass or sandwiching it between glasses.

[0004] The film-type solar cell is composed of a power generation layer and resin-made protective films on the front and back that cover the power generation layer. The outer peripheral portions of the front and back films are joined by heat fusion or (after surface modification of the joining surface,) a hot melt adhesive or the like. Regardless of new construction or existing construction, when using crystalline solar cells, there is a problem of increased weight including the pedestal, but film-type solar cells are lightweight and can be attached to exterior materials and are easy to construct, so various devices have been made.

[0005] Patent Document 1 discloses a technique in which a connection structure on one side of a folded plate is made connectable to the other side of an adjacent folded plate by locking or overlapping to form a base for a roof-type solar cell, and a flat plate portion on its upper surface is used as a support plate area for a solar power generation module, and both side edges of the solar power generation module are fixed to the support plate area. The solar power generation module is a flat plate protected by glass and is attached to the support plate area using adhesive or adhesive tape.

[0006] Patent Document 2 discloses a composite structure in which a flexible solar cell and a substrate (building material) are bonded together by acrylic foam coated with an acrylic adhesive on both sides, i.e., double-sided tape. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Utility Model Registration No. 3240653 Publication [Patent Document 2] Utility Model Registration No. 3164871 Gazette [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] Film-type solar cells need to be firmly fixed by adhesive or other means to prevent them from being scattered during operation. However, the durability of the adhesive is known to decrease due to ultraviolet rays and rainwater. The solar power generation module described in Patent Document 1 is protected by glass, and the adhesive portion that bonds the solar power generation module to the substrate is exposed to ultraviolet light, so the durability of the adhesive portion is a challenge.

[0009] Furthermore, while Patent Document 2 states that the flexible solar cell sheet has a 90-degree peel-off adhesive strength of 15N or more per 10mm of substrate, it does not mention any reduction in adhesive strength due to the effects of ultraviolet rays or rainwater, or any guarantees regarding its performance.

[0010] As described above, neither Patent Document 1 nor 2 mentions measures to ensure the durability of the adhesive portion that fixes the solar cell, and the decrease in adhesive strength during the service life has been a problem.

[0011] This invention was made to solve the aforementioned problems, and aims to provide a solar cell-integrated exterior material that protects the adhesive portion that fixes the solar cell from ultraviolet rays and rainwater, thereby suppressing a decrease in adhesive strength during its service life. [Means for solving the problem]

[0012] (1) The solar cell integrated exterior material according to the present invention is a thin sheet molded material in the shape of a folded plate formed in a substantially symmetrical manner in the short-side direction, comprising: an exterior material substrate whose both ends are fixed to the structural frame of a structure; a film-like or sheet-like solar cell module; and a cap member that is attached so as to straddle the side end of one exterior material substrate and the side end of the other exterior material substrate, which are adjacent to each other in the short-side direction, when the exterior material substrate is fixed to the structural frame, The exterior substrate has horizontal portions of approximately equal height and locking portions for locking the cap member at both ends. The solar cell module is arranged so as to extend at least between the horizontal sections, and its side end is attached via a first adhesive layer to the region that, in a plan view, becomes the horizontal section. The cap member is characterized in that, when the cap member is engaged with the locking portion of one exterior substrate and the locking portion of the other exterior substrate, it functions as a sunshade member that covers at least the side edges of the attachment area of ​​the solar cell module and blocks sunlight.

[0013] (2) Furthermore, the solar cell integrated exterior material according to the present invention is a thin sheet molded material in the shape of a folded plate formed in a substantially symmetrical manner in the short-side direction, comprising: an exterior material substrate whose both ends are fixed to the structural frame of a structure; a film-like or sheet-like solar cell module; a hanger member disposed between the exterior material substrates which are arranged adjacent to each other in the short-side direction at a predetermined interval, connecting the adjacent exterior material substrates and fixing the exterior material substrates to the structural frame; and a cap member which is attached to cover the hanger member when the exterior material substrate is fixed to the structural frame by the hanger member, The exterior substrate has, on both ends, a horizontal portion of approximately equal height, a rising portion that rises from the horizontal portion towards the outside when installed, and a slanted portion formed at the tip of the rising portion and inclined toward the center in the short side direction with respect to the rising portion. The solar cell module is arranged so as to extend at least between the horizontal portions, and its side ends are attached via a first adhesive layer to an area that, in a plan view, is at least one of the horizontal portion, the rising portion, or the slanted portion. The cap member is characterized in that, when it is engaged with the slanted edge portion of one exterior substrate and the slanted edge portion of the other exterior substrate, it functions as a sunshade member that covers at least the side edge of the attachment area of ​​the solar cell module and blocks sunlight.

[0014] (3) In addition, the device described in (2) above is characterized in that both ends of the solar cell module are attached to the hanger member and are sandwiched between the cap member and the exterior material substrate.

[0015] (4) Furthermore, in the case described in (2) above, both ends of the solar cell module are sandwiched between the hanger member and the exterior material substrate.

[0016] (5) In addition, in any of the above (1) to (4), the solar cell module further has a plate-shaped support layer, and both ends of the support layer are attached to the horizontal portion of the exterior material substrate via a second adhesive layer. The cap member is characterized in that, in the locked state, it covers the side end of the support layer.

[0017] (6) Furthermore, in any of the above (1) to (5), an elastic waterproof member is fitted between the cap member and the solar cell module.

[0018] (7) Also, in the one described in (6) above, the attachment area of the solar cell module is entirely covered by at least one of the elastic waterproof member and the cap member.

[0019] (8) Also, in the one described in any one of (1) to (7) above, a plurality of the solar cell modules are attached side by side in the long side direction to one of the exterior material substrates, and the wirings of the plurality of solar cell modules are connected to each other via wiring connection parts. The wiring and the wiring connection parts are arranged in a space surrounded by the solar cell module and the exterior material substrate, and at least the wiring connection parts are not in contact with the bottom of the exterior material substrate.

[0020] (9) Also, in the one described in any one of (1) to (8) above, a plurality of the solar cell modules are attached side by side in the long side direction to one of the exterior material substrates. A predetermined gap is provided between adjacent solar cell modules so that rainwater does not flow down from the upper surface of the solar cell module arranged below to the upper surface of the solar cell module arranged above in a state where the exterior material substrate is fixed to the structural housing.

Advantages of the Invention

[0021] In the present invention, since the cap member covers the side end portion of the solar cell module, the adhesive layer for adhering the solar cell module can be protected from ultraviolet rays and rainfall. Thereby, deterioration of the adhesive layer due to ultraviolet rays and peeling of the adhesive layer due to rainwater erosion from the side end portion are suppressed, and a decrease in the adhesive force of the adhesive layer is prevented.

Brief Description of the Drawings

[0022] [Figure 1] It is an explanatory view of a solar cell integrated exterior material according to Embodiment 1. [Figure 2] It is an explanatory view of an exterior material substrate. [Figure 3] This is a diagram illustrating a solar cell module. [Figure 4] This figure shows the solar cell module shown in Figure 3 attached to the exterior substrate shown in Figure 2. [Figure 5] This is an explanatory diagram of the hanger member and the cap member. [Figure 6] This is an enlarged view of section A in Figure 1. [Figure 7] This is an explanatory diagram of another embodiment of a solar cell module. [Figure 8] This is an explanatory diagram of a solar cell-integrated exterior material according to Embodiment 2. [Figure 9] This is an enlarged view of section D in Figure 8. [Figure 10] This is an explanatory diagram of a solar cell-integrated exterior material according to Embodiment 3. [Figure 11] This is an explanatory diagram of a solar cell integrated exterior material according to Embodiment 4. [Figure 12] This is an explanatory diagram (part 1) of the solar cell integrated exterior material according to Embodiment 5. [Figure 13] This is an explanatory diagram (part 2) of the solar cell integrated exterior material according to Embodiment 5. [Figure 14] This is a top view of the exterior substrate to which the solar cell module according to Embodiment 6 is attached. [Figure 15] This is a cross-sectional view of EE in Figure 14. [Modes for carrying out the invention]

[0023] [Embodiment 1] Figure 1 shows the solar cell integrated exterior material 1 according to this embodiment. Figure 1 shows an example of applying the present invention to the roof of a building, illustrating the state in which the solar cell-integrated exterior material 1 is installed on the structural frame 3 (purlin) as a roof. Figure 1 is a cross-sectional view in the direction corresponding to the short side of the exterior material substrate 5, which will be described later (in the installed state, the direction perpendicular to the slope of the roof). In the following explanation, when simply referred to as a cross-sectional view in the short side direction, it refers to the cross-sectional view in the above direction.

[0024] As shown in Figure 1, the solar cell integrated exterior material 1 according to this embodiment comprises an exterior material substrate 5 and a solar cell module 7, and further comprises a hanger member 9 and a cap member 11 as connecting members. Both ends of the solar cell module 7 are fixed to the exterior substrate 5 by adhesive or other means, and these side ends are covered by cap members 11. This protects the adhesive layer 13 that bonds the exterior substrate 5 and the solar cell module 7 from ultraviolet rays and rainfall, and suppresses the peeling of the solar cell module 7 due to deterioration of the adhesive layer 13.

[0025] The solar cell integrated exterior material 1 may be constructed by first attaching the solar cell module 7 to the exterior material substrate 5 and then fixing the exterior material substrate 5 to the structural frame 3, or by first fixing the exterior material substrate 5 to the structural frame 3 and then attaching the solar cell module 7 to the exterior material substrate 5. In the following explanation, we will use the application of the present invention to the roof of a building as an example, but the uses of the solar cell-integrated exterior material of the present invention are not limited to this. For example, it can be applied to other exterior materials used in buildings (such as exterior wall materials), and it can also be used for purposes other than building exterior materials, such as soundproof walls and sound barriers. The following describes each component in detail.

[0026] <Exterior material substrate> Figure 2 shows a cross-sectional view of the exterior substrate 5 in the short-side direction. In this explanation, the short side direction of the exterior material substrate 5 refers to the width direction of the exterior material substrate 5. The long side direction refers to the longitudinal direction of the exterior material substrate 5. When installing the exterior material substrate 5 on the roof, the exterior material substrate 5 is fixed to the structural frame 3 so that the long side direction of the exterior material substrate 5 is aligned with the slope direction of the roof.

[0027] The exterior substrate 5 is, for example, a thin metal sheet, and as shown in Figure 2, it has a folded plate shape in which both sides in the short-side direction are approximately symmetrical with respect to a line in the long-side direction that passes through the center in the short-side direction. The exterior substrate 5 has a bottom portion 5a, a pair of side wall portions 5b rising outward in the short-side direction from the bottom portion 5a, a pair of horizontal portions 5c extending horizontally outward in the short-side direction from the upper end of the side wall portions 5b, a pair of rising portions 5d rising outward from the horizontal portions 5c in the installed state, and a slanted portion 5e formed at the tip of the rising portion 5d.

[0028] The horizontal portions 5c formed on both ends of the exterior substrate 5 are the parts that are positioned at the top of the tight frame 19 when fixing the exterior substrate 5 to the structural frame 3, and their height is approximately equal to that of the bottom portion 5a. The slanted portion 5e formed at the tip of the rising portion 5d is formed to be inclined toward the center in the short side direction with respect to the rising portion 5d. As will be described in more detail later, the rising portion 5d and the slanted portion 5e function as fixing parts for securing the exterior material substrate 5 to the structural frame 3 by the hanger member 9. In addition, the slanted portion 5e also functions as a locking part for locking the cap member 11, which will be described later.

[0029] The surface of the exterior substrate 5, that is, the surface facing the outdoors when installed, is preferably made of a metal base, plated, resin coated, or film laminated. Furthermore, the expected lifespan of the exterior substrate 5 is 20 years or more.

[0030] The solar cell module 7, which is integrated with the exterior substrate 5, is generally less durable than the exterior substrate 5. Therefore, from the standpoint of facilitating the replacement of solar cell modules 7 while they are in use, it is desirable that the solar cell modules 7 be easily detachable from the exterior substrate 5.

[0031] To facilitate the removal of the solar cell module 7, the surface of the exterior substrate 5, i.e., the surface to which the solar cell module 7 is attached, may be made of a resin layer that is difficult to adhere to. The difficult-to-adhere resin layer is formed, for example, by a coating film containing fluororesin or a laminate film. Forming a coating film containing fluororesin or a laminate film on the surface of the exterior material substrate 5 is preferable because it allows for both improved durability and difficult adhesion.

[0032] <Solar modules> The solar cell module 7 is attached to the surface of the horizontal portion 5c of the exterior substrate 5 by adhesive or other means at both ends, and is integrated with the exterior substrate 5. The solar cell module 7 is formed in the form of a film or sheet, and may be any of the following: organic thin-film solar cells (OPVs), crystalline thin-film solar cells, perovskite solar cells, etc.

[0033] An example configuration of the solar cell module 7 is shown in Figure 3. Figure 3(a) is a top view of the solar cell module 7, and Figure 3(b) is a cross-sectional view of BB in Figure 3(a). As shown in Figure 3, the solar cell module 7 has a power generation layer 15 and a protective film 17 that protects the power generation layer 15. The power generation layer 15 is covered on both sides by two light-transmitting protective films 17. Furthermore, the outer edges of the two protective films 17 are sealed.

[0034] Figure 4 shows a cross-sectional view in the short-side direction of the exterior substrate 5 shown in Figure 2, with the solar cell module 7 shown in Figure 3 attached to it and integrated into one structure. As shown in Figure 4, the solar cell module 7 is arranged to extend across the horizontal portions 5c on both sides of the exterior substrate 5, and both ends of the module are attached to the horizontal portions 5c via the adhesive layer 13. Here, the side edge of the solar cell module 7 refers to the protective film portion on both sides in the short-side direction of the power generation layer.

[0035] The adhesive layer 13 shown in the figure corresponds to the first adhesive layer of the present invention, and in this case, the first adhesive layer has the function of directly fixing the protective film 17 of the solar cell module 7 to the exterior material substrate 5. The above example shows a configuration in which the protective film 17 is directly attached to the exterior material substrate 5. However, the present invention is not limited to this configuration. In some cases, a plate-shaped support layer is provided on the lower surface of the protective film 17, and the support layer is attached to the exterior material substrate 5. In this case, a first adhesive layer is provided on the portion of the protective film 17 that adheres to the support layer, and a second adhesive layer is provided on the portion of the support layer that adheres to the exterior material substrate 5. Regardless of the presence or absence of a support layer, the solar cell module 7 is arranged to span between the horizontal sections 5c, and its side edges are attached via a first adhesive layer to the region that becomes the horizontal section 5c in a plan view. The case where a supporting layer is present will be explained in detail later.

[0036] The solar cell module 7 is expected to have a lifespan of approximately 10 years. As mentioned above, the durability of the solar cell module 7 is lower than that of the exterior substrate 5, so it is possible that the solar cell module 7 may need to be replaced during service. To allow the solar cell module 7 to be easily peeled off the exterior substrate 5 during replacement, the back surface of the solar cell module 7 may be made of a resin layer that is difficult to adhere to.

[0037] <Hanging component> The hanger member 9 is positioned between exterior material substrates 5 that are adjacent to each other in the short-side direction at a predetermined interval, connecting the adjacent exterior material substrates 5 to each other, and is a member that fixes these exterior material substrates 5 to the tight frame 19 fixed on the structural frame 3.

[0038] As shown in Figure 1, the exterior material substrate 5 is installed on the tight frame 19 such that its horizontal portion 5c is positioned at the top of the tight frame 19. The hanger member 9 is positioned between the rising portion 5d of one exterior material substrate 5 and the rising portion 5d of the other exterior material substrate 5, which are adjacent to each other in the short-side direction.

[0039] Figure 5 shows a cross-sectional view in the short-side direction, illustrating the arrangement of the components placed at the top of the tight frame 19. As shown in Figure 5, the hanger member 9 has a groove-shaped portion with a rectangular cross-section and a folded portion that is folded outward from the upper end of the groove wall of the groove-shaped portion. When placed between adjacent exterior material substrates 5, the folded portion engages with the slanted edge portion 5e of the exterior material substrate 5. With the hanger member 9 engaged with the exterior material base plate 5, the bottom of the hanger member 9 is fixed to the top of the tight frame 19 with a bolt 21 and a nut 23. This presses down on the rising portion 5d and the slanted portion 5e of the exterior material base plate 5 from the outside, thereby fixing the exterior material base plate 5 to the structural frame 3.

[0040] <Cap component> The cap member 11 is a component that prevents the hanger member 9 and bolts 21 from being exposed to rain and prevents rainwater from leaking from the connection part of the adjacent exterior material substrate 5. The cap member 11 is attached so as to cover the hanger member 9 after the exterior material substrate 5 to which the solar cell module 7 is attached is fixed to the structural frame 3, or after the solar cell module 7 is attached to the exterior material substrate 5 which is fixed to the structural frame 3.

[0041] The cap member 11 is made of an elastic material of resin or metal, has a substantially dome-shaped cross-section with an opening at the bottom, and has a fitting portion 11a with the hanger member 9 or the slanted edge portion 5e of the exterior material substrate 5, and an extension portion 11b formed to fold back from the fitting portion 11a. The extension portion 11b is provided to extend outward and downward from the fitting portion 11a so as to cover the adhesive layer 13 which will be described later. By positioning the cap member 11 so as to cover the hanger member 9 and pressing it in, the cap member 11 elastically deforms and widens the opening, and then elastically recovers, causing the cap member 11 to lock onto the slanted edge 5e of the exterior material substrate 5.

[0042] When the cap member 11 is attached so as to engage with the slanted edge 5e of one adjacent exterior substrate 5 and the slanted edge 5e of the other exterior substrate 5, as shown in Figure 6, the side end of the solar cell module 7 attached to the horizontal portion 5c of the exterior substrate 5 is covered by the cap member 11. Therefore, at least the side edges of the adhesive layer 13 of the solar cell module 7 are covered by the cap member 11, blocking sunlight, so the cap member 11 also functions as a sunshade, suppressing UV degradation of the adhesive layer 13. Furthermore, since the portion covered by the cap member 11 is not exposed to rainfall, rainwater is less likely to penetrate the adhesive layer 13 from the side edge of the solar cell module, and the reduction in the adhesive area of ​​the adhesive layer 13 is also suppressed.

[0043] As described above, in this embodiment, the side ends of the solar cell module 7 are attached to the horizontal portions 5c formed on both ends of the exterior substrate 5, and the cap member 11 is secured to the slanted portion 5e of the exterior substrate 5, thereby protecting the adhesive layer 13 from ultraviolet rays and rainwater. This makes it possible to suppress the decrease in adhesive strength of the adhesive layer 13 during its service life, which has been a problem in the past.

[0044] Conventional solar cell integrated exterior materials required strong adhesion of the solar cell modules to the exterior material substrate to prevent them from scattering during use, but this did not take into account the reduction in adhesive strength due to ultraviolet rays and rainwater. On the other hand, if the solar cell modules were bonded too strongly, it would become difficult to remove them from the outer substrate when replacing them. In this respect, this embodiment suppresses the reduction in adhesive strength due to ultraviolet rays and rainwater, so even if the solar cell modules are bonded with the required design strength and can be easily peeled off, the scattering of the solar cell modules becomes less likely. The following describes a method of joining the solar cell module 7 and the exterior substrate 5 in order to allow for easy peeling and adhesion of the solar cell module 7.

[0045] 《Method of joining solar cell modules to exterior substrate material》 As a method for joining the solar cell module 7 and the exterior substrate 5, it is preferable to form an adhesive layer 13 using, for example, double-sided tape. Furthermore, as an embodiment for easily peeling off and bonding the solar cell module 7, as described above, it is preferable to make the surface of the exterior material substrate 5 or the back surface of the solar cell module 7 a difficult-to-bond resin layer.

[0046] The difficult-to-adhere resin layer may be made on either the surface of the exterior substrate 5 or the back surface of the solar cell module 7, or both. If a difficult-to-adhere resin layer is formed on either the exterior substrate 5 or the solar cell module 7, and no such processing is applied to the other, the side with the difficult-to-adhere resin layer becomes easily peeled off. However, by making the exterior substrate 5 easily removable, it becomes less likely that adhesive layers 13 or the like will remain on the surface of the exterior substrate 5 when replacing the solar cell module 7, and the effort required to service the exterior substrate 5 is reduced. Therefore, the most desirable configuration is one in which the exterior substrate 5 is easily removable.

[0047] Furthermore, when forming a poorly adhesive resin layer on both the exterior substrate 5 and the solar cell module 7, it is advisable to modify the surface of either the surface of the exterior substrate 5 or the back surface of the solar cell module 7, or to adjust the amount of poorly adhesive components present therein, in order to create a difference in their adhesive properties. In this case as well, it is desirable to make the exterior substrate 5 side easy to peel off, so it is good to improve adhesion by surface modifying the back surface of the solar cell module 7. Note that the area to be modified should include the area where the adhesive layer 13 is applied, and it is not necessary to surface modify the entire back surface of the solar cell module 7.

[0048] The above is an example of creating a difference in adhesion between the difficult-to-adhere resin layer provided on the exterior substrate 5 side and the difficult-to-adhere resin layer provided on the solar cell module 7 side, but for example, the following method can also be used. When forming the adhesive layer 13 with double-sided tape, by creating a difference in adhesive strength between the front and back sides of the double-sided tape and strengthening the adhesive force on the solar cell module 7 side, it becomes less likely for the adhesive layer 13 to remain on the exterior substrate 5 side when peeling the solar cell module 7 from the exterior substrate 5. Double-sided tape should be applied first to the area requiring high adhesive strength. Furthermore, a design that allows the adhesive strength to increase over time after application is preferable, as it makes repositioning easier. Furthermore, double-sided tape may consist only of an adhesive layer or may use a base material, but the base material must be stronger than the adhesive layer.

[0049] As mentioned above, the adhesive layer 13 is provided on both ends of the solar cell module 7, specifically on the portion of the protective film 17 that is outside the power generation layer 15 in the shorter direction, and the ends of both ends of the solar cell module 7 are attached to the horizontal portion 5c of the exterior substrate 5 by this adhesive layer 13.

[0050] Generally, the area of ​​the adhesive layer 13 used for attaching the solar cell module 7 is determined by considering the external forces (acting wind pressure) in the construction area, the decrease in adhesive strength due to temperature (heat) and ultraviolet rays during use, and the deterioration of adhesive strength over time due to the reduction in adhesive area caused by the intrusion of rainwater, etc. In this respect, in this embodiment, since the side edges of the solar cell module 7 are covered by the cap member 11, it is not necessary to consider the reduction in adhesive strength due to thermal history or ultraviolet rays, or the reduction in adhesive area due to the intrusion of rainwater, etc., within that range.

[0051] Therefore, the required holding force of the adhesive layer 13 in this embodiment was estimated as follows. As an example, a computational fluid dynamics analysis of a large warehouse constructed in an area with a standard wind speed of 34 m / s as defined by the Building Standards Act showed that the maximum vertical upward wind pressure was 3.2 kN / m 2 That was the case. Wind pressure acts on the solar cell module 7 in the area not covered by the cap member 11, that is, in the area between the left and right adhesive layers 13. In the example shown in Figure 1, when the distance between the left and right rising portions 5d of the exterior substrate 5 is 450 mm, the width of the left and right horizontal portions 5c is 25 mm each, and the outer dimensions of the solar cell module 7 are 450 mm × 1000 mm, the uplift force acting on the solar cell module 7 is 1.28 kN because it acts over an area of ​​400 mm in width and 1000 mm in length. In Figure 1, the width of the adhesive layer 13 is the same as the width of the horizontal section 5c, so the total area of ​​the adhesive layer 13 is 0.05 m². 2 Therefore, the holding force of the adhesive layer 13 in this case is 2.56 N / cm². 2 That's all you need. This is the required holding force when an adhesive layer 13 of the same width is formed on a horizontal section 5c with a width of 25 mm. However, if the holding force of the adhesive layer 13 is increased above this value, the width of the adhesive layer 13 can be reduced, thereby reducing the bonding area.

[0052] The above description uses the example of bonding a solar cell module 7, consisting of a power generation layer 15 and a protective film 17, to an exterior material substrate 5. However, the form of the solar cell module according to the present invention is not limited to this. Another form of the solar cell module is shown in Figure 7.

[0053] Figure 7(a) is a top view of the solar cell module 25 with a support layer, and Figure 7(b) is a cross-sectional view of the CC of Figure 7(a). As shown in Figure 7(b), the solar cell module 25 with a support layer has a plate-shaped support layer 27 provided on the lower surface of the protective film 17 on the back side. The support layer 27 is made of, for example, a resin plate or a metal plate. The example in Figure 7 shows a support layer 27 provided on the underside of the protective film 17 on the back side. However, the support layer 27 may also be provided between the two protective films 17, specifically between the power generation layer 15 and the protective film 17 on the back side of the power generation layer 15.

[0054] The means by which the protective film 17 and the support layer 27 are joined can be arbitrarily selected, such as by heat fusion, adhesive bonding, or by using double-sided tape, but the joining area should be at least both ends, preferably the outer periphery, and most preferably the entire surface. Furthermore, if surface rigidity is required for the solar cell module 25 with a support layer, it is advisable to increase the rigidity of the support layer 27 by providing ribs, embossing, etc., on the support layer 27 to increase the second moment of area in the width direction.

[0055] The support layer 27 of the solar cell module 25 with a support layer may be separated from the power generation layer 15 and the protective film 17 and bonded together during installation, or it may be integrated with them beforehand. Furthermore, when attaching the solar cell module 25 with a support layer to the exterior substrate 5, it is preferable to first adhere the support layer 27 to the horizontal portion 5c of the exterior substrate 5, and then adhere the protective film 17 covering the power generation layer 15 to the upper surface of the support layer 27. Alternatively, the protective film 17 covering the power generation layer 15 and the support layer 27 may be pre-integrated, and the support layer 27 may then be adhered to the exterior substrate 5. The solar cell module 25 with a support layer has the advantage of being able to be attached to the exterior substrate 5 without bending the power generation layer 15, compared to the solar cell module 7 in Figure 3.

[0056] In the example shown in Figure 7, the support layer 27 and the protective film 17 are of the same width, but this is not limited to the configuration of the solar cell module 25 with a support layer. In the solar cell module 25 with a support layer, the protective film 17 is bonded to the support layer 27, and the support layer 27 is bonded to the horizontal portion 5c of the exterior substrate 5. Therefore, it is sufficient for the support layer 27 to have a width that allows it to be bonded across the horizontal portion 5c, and the width of the protective film 17 may be smaller than that of the support layer 27. When a solar cell module 25 with a support layer is used, the adhesive layer that adheres the protective film 17 to the support layer 27 corresponds to the first adhesive layer of the present invention, and the adhesive layer that adheres the support layer 27 to the exterior material substrate 5 corresponds to the second adhesive layer of the present invention.

[0057] As described above, the width of the protective film 17 can be made smaller than the width of the support layer 27. However, if the width of the protective film 17 is too small, the first adhesive layer may not be covered by the cap member 11 and may deteriorate due to exposure to ultraviolet light. Therefore, the protective film 17 should have a width that extends at least across the horizontal portion 5c. By making the width of the protective film 17 large enough to span the horizontal portion 5c, the side edges of the protective film 17 are attached to the support layer 27 in the area that is the horizontal portion 5c in a plan view. As a result, the side edges of the first adhesive layer are covered by the cap member 11 and protected from ultraviolet rays and rainwater. This makes it difficult for the protective film 17 to peel off the support layer 27. If the width of the protective film 17 has to be narrower than the size that spans the horizontal portion 5c due to an increase in the width of the exterior material substrate 5, it is advisable to extend both ends of the extended portion 11b of the cap member 11 so as to cover the side edges of the protective film 17.

[0058] Furthermore, regarding the second adhesive layer that adheres the support layer 27 to the exterior material substrate 5, although degradation due to ultraviolet rays does not occur because the support layer 27 blocks sunlight, there is a risk of reduction in the adhesive area due to rainwater intrusion, similar to the adhesive layer 13 shown in Figure 1, etc. In this respect as well, since the side edges of the support layer 27 are attached to the exterior material substrate 5 in a region that is horizontal in a plan view, the side edges of the second adhesive layer are covered by the cap member 11 and protected from rainwater, making it difficult for the support layer 27 to peel off the exterior material substrate 5.

[0059] The above describes an example in which the width of the protective film 17 is the same as or smaller than the width of the support layer 27, but the width of the protective film 17 may be larger than the width of the support layer 27. Since the support layer 27 is plate-shaped, its width must be at most the length from one rising portion 5d to the other rising portion 5d of the exterior material substrate 5. However, the protective film 17 is not limited to this and can have its width extended to the rising portion 5d or the slanted edge 5e. Examples of extending the width of the protective film 17 will be described in Embodiments 3 to 5 below.

[0060] As described above, in this embodiment, a solar cell module with a support layer 25 may be used instead of the solar cell module 7 in Figure 1. In that case as well, the cap member 11 protects the first adhesive layer and the second adhesive layer from ultraviolet rays and rainwater. Therefore, a decrease in their adhesive strength can be suppressed, and peeling of the protective film 17 from the support layer 27 and peeling of the support layer 27 from the exterior material substrate 5 can be prevented.

[0061] [Embodiment 2] In the above-described embodiment 1, it was explained that the cap member 11 functions as a sunshade or rain cover to protect the adhesive layer 13. In embodiment 1, although the side end of the solar cell module 7 is covered by the cap member 11, thus making that part less likely to be exposed to rain, it is possible that rainwater may enter the side end of the solar cell module 7 through the gap created between the cap member 11 and the solar cell module 7, by running along the top surface of the solar cell module 7. Therefore, in this embodiment, we will describe an example of sealing the gap between the cap member 11 and the solar cell module 7 to more reliably prevent rainwater from entering. Figure 8 shows a cross-sectional view in the short-side direction illustrating an aspect of this embodiment. Figure 9 shows an enlarged view of section D in Figure 8.

[0062] The solar cell integrated exterior material 1 of this embodiment includes, in addition to the configuration of Embodiment 1, an elastic waterproof member 29 as shown in Figures 8 and 9. As the elastic waterproofing member 29, it is desirable to use highly durable elastic sealing materials such as modified silicone or silicone, or highly durable rubber gasket materials such as butyl rubber or EPDM. By fitting the elastic waterproof member 29 described above between the cap member 11 and the solar cell module 7 and sandwiching it between the cap member 11 and the solar cell module 7, it is possible to prevent rainwater from entering the side edges of the solar cell module 7. This makes it more difficult for rainwater to reach the adhesive layer 13, thereby increasing the durability of the adhesive layer 13.

[0063] Furthermore, in addition to preventing rainwater from entering, the elastic waterproofing member 29 also functions as a sunshade that blocks ultraviolet rays. As shown in the example in Figure 6 of Embodiment 1, depending on the size (width) of the cap member 11, it may not be possible to cover the entire area of ​​the adhesive layer 13 provided on the horizontal portion 5c. Although a certain effect can be obtained by covering at least the side edges of the adhesive layer 13 (application area) with the cap member 11, from the viewpoint of reducing degradation due to ultraviolet rays, it is more desirable to cover the entire surface of the adhesive layer 13 to block ultraviolet rays.

[0064] Therefore, as shown in Figure 9, it is even more desirable to extend the width of the elastic waterproof member 29 to the outside of the cap member 11, so that the entire side edge of the solar cell module 7 (the entire area that becomes the horizontal portion 5c in a plan view) is covered with the elastic waterproof member 29. In this way, by covering the entire side edge of the solar cell module 7 with at least one of the elastic waterproof member 29 and the cap member 11, UV degradation can be suppressed over the entire area of ​​the adhesive layer 13, further enhancing durability.

[0065] [Embodiment 3] This embodiment describes an example of further improving the holding force for the solar cell module 7. For example, if the adhesive strength of the double-sided tape forming the adhesive layer 13 is weak, or if the area of ​​the horizontal portion 5c is small and a large adhesive area cannot be secured, the adhesive strength of the adhesive layer 13 alone may not be sufficient to secure the required holding force (in this case, the peel value obtained by a 90° peel test or a 180° peel test).

[0066] In such cases, as shown in the cross-sectional view in the short-side direction of Figure 10, both ends of the solar cell module 7 may be extended from the rising portion 5d to the inclined portion 5e as needed and placed between the hanger member 9 and the exterior material substrate 5, thereby mechanically clamping both ends of the solar cell module 7. If the holding force provided by the clamping between the hanger member 9 and the exterior material substrate 5 exceeds the required holding force, the holding force provided by the adhesive layer 13 only needs to be the minimum required holding force during installation, so the width of the adhesive layer 13 may be reduced (the adhesive area may be reduced).

[0067] Furthermore, the area to which the solar cell module 7 is attached is not limited to the horizontal section 5c. Depending on the required holding force, the area of ​​the adhesive layer 13 may be expanded from the horizontal section 5c to the vertical section 5d and even to the slanted section 5e to increase the bonding area. In other words, if sufficient bonding area cannot be secured with the horizontal section 5c alone, the solar cell module 7 may also be attached to the vertical section 5d and the slanted section 5e.

[0068] [Embodiment 4] In this embodiment, in addition to bonding the solar cell module 7 to the exterior substrate 5, an example is described in which the solar cell module 7 is also bonded to the hanger member 9. As shown in the cross-sectional view in the short-side direction of Figure 11, after fixing the exterior material substrate 5 to the structural frame 3 with the hanger member 9, the side end of the solar cell module 7 may be attached to the hanger member 9 via the adhesive layer 31 (corresponding to the first adhesive layer of the present invention). Figure 11 shows the state before the cap member 11 is attached. In this state, when the cap member 11 is locked to the slanted edge portion 5e, the side end of the solar cell module 7 is sandwiched between the cap member 11 and the exterior material substrate 5.

[0069] In the embodiment shown in Figure 11, the solar cell module 7 is held in place by the adhesive force of the adhesive layer 13, the adhesive force of the adhesive layer 31, and the clamping force between the cap member 11 and the exterior substrate 5. Furthermore, since the adhesive layer 31 that adheres the solar cell module 7 to the hanger member 9 is completely covered by the cap member 11, there is no need to consider the deterioration of adhesiveness due to ultraviolet rays or rainwater.

[0070] Furthermore, regarding the adhesive layer 13 that adheres the solar cell module 7 to the exterior substrate 5, as mentioned above, it is desirable to make the adhesive strength with the solar cell module 7 stronger than the adhesive strength with the exterior substrate 5, so that when the solar cell module 7 is peeled off from the exterior substrate 5, the majority of the adhesive layer 13 remains on the solar cell module 7 side. On the other hand, with respect to the adhesive layer 31 that adheres the solar cell module 7 to the hanger member 9, the hanger member 9 may be considered a consumable item, and the adhesive layer 31 may be firmly attached to the hanger member 9 side. In other words, the adhesive strength of the adhesive layer 31 can be made stronger, and the adhesive strength of the adhesive layer 13 can be made weaker, which makes it easier to peel the solar cell module 7 off the exterior substrate 5 when replacing it.

[0071] [Embodiment 5] In the embodiments described above, the adhesive layer 13 was provided on the horizontal portion 5c. However, the present invention is not limited to this, and the adhesive layer 13 may not be provided on the horizontal portion 5c, but rather on a portion closer to the end than the horizontal portion 5c, such as the rising portion 5d or the slanted edge portion 5e. Examples of this are shown in Figures 12 and 13. Figure 12 is a cross-sectional view in the short-side direction showing the state before the hanger member 9 is fixed to the tight frame 19, and Figure 13 is a cross-sectional view in the short-side direction showing the state after the hanger member 9 is fixed to the tight frame 19 and the cap member 11 is further engaged with the exterior material substrate 5.

[0072] In this embodiment, as shown in Figure 12, an adhesive layer 13 is provided on the side edge of the exterior substrate 5, and the solar cell module 7 is attached to the exterior substrate 5 via this adhesive layer. Furthermore, after attaching the solar cell module 7 as described above, the hanger member 9 is fixed as shown in Figure 13, so that the solar cell module 7 is sandwiched between the hanger member 9 and the exterior substrate 5. Furthermore, after fixing the hanger member 9, the cap member 11 is attached, so that the solar cell module 7 is sandwiched between the cap member 11 and the exterior substrate 5. As described above, in this embodiment, the solar cell module 7 is held in place by the adhesive force of the adhesive layer 13, the clamping force between the hanger member 9 and the exterior material substrate 5, and the clamping force between the cap member 11 and the exterior material substrate 5.

[0073] Furthermore, by applying tension to the solar cell module 7 with the cap member 11, the deflection of the solar cell module 7 can be reduced even without bonding the solar cell module 7 to the horizontal section 5c.

[0074] In the embodiments 1 to 5 described above, the side edges of the solar cell module 7 are attached to at least one of the horizontal portion 5c, the rising portion 5d, or the slanted portion 5e in a plan view. By attaching the side edges of the solar cell module 7 to these areas, when the cap member 11 is attached, the cap member 11 functions as a sunshade or rain cover that protects the adhesive layer 13 from ultraviolet rays and rainwater. Therefore, the deterioration of the adhesive strength of the adhesive layer 13 during its service life is suppressed, and the solar cell module 7 is less likely to be blown away even in wind and rain.

[0075] Furthermore, by suppressing the decrease in adhesive strength of the adhesive layer 13 during the service life, it becomes possible to easily peel off and attach the solar cell module 7, thus facilitating the replacement of the solar cell module 7. Furthermore, by creating a difference in adhesive properties between the solar cell module 7 and the exterior substrate 5 in the area where the adhesive layer 13 is provided, the solar cell module 7 can be peeled off without leaving any adhesive layer 13 on the exterior substrate 5. This prevents damage to the exterior substrate 5 during solar cell module replacement, maintains durability, and reduces the effort required to clean the surface of the exterior substrate 5, thereby streamlining the replacement process.

[0076] [Embodiment 6] Next, the configuration of the wiring portion of the solar cell module in the above embodiments 1 to 5 will be described. Figure 14 shows a plan view of the exterior substrate 5 to which the solar cell module 25 with a support layer (see Figure 7) is attached, and Figure 15 shows the EE cross-sectional view of Figure 14. The examples in Figures 14 and 15 use the solar cell module 25 with a support layer instead of the solar cell module 7 in Figure 4, but the following explanation is also common to solar cell integrated exterior materials using the solar cell module 7.

[0077] Since the exterior substrate 5 is a longer component than the solar cell modules 25 with support layers, as shown in Figure 14, multiple solar cell modules 25 with support layers are attached to a single exterior substrate 5 in a line along its longer side. In addition, a predetermined gap S is provided between adjacent solar cell modules 25 with support layers.

[0078] Each solar cell module 25 with a support layer is provided with a junction box 33, as shown in Figure 15. A wiring connector 37 is provided at the end of the wiring 35 extending from the junction box 33, and the wiring 35 of adjacent solar cell modules 25 with support layers are connected to each other via the wiring connector 37. The junction box 33, wiring 35, and wiring connection section 37 are located in the space enclosed by the solar cell module 7 and the exterior substrate 5.

[0079] The junction box 33 is fixed to the lower surface of the support layer 27 of the solar cell module 25 with a support layer. The wiring 35 is also supported by a wiring support member 39 provided on the lower surface of the support layer 27. As described above, the junction box 33, wiring 35, and wiring connection section 37 are supported by the support layer 27 of the solar cell module 25 with a support layer, or by the wiring support member 39 fixed to the support layer 27, so as not to come into contact with the bottom 5a of the exterior substrate 5.

[0080] When solar cell modules 25 with support layers are arranged adjacent to each other along the long side of the exterior substrate 5, the solar cell modules 25 with support layers will be continuous in the direction of the roof's slope when the exterior substrate 5 is installed on the roof. Therefore, during rainfall, rainwater will flow down from the solar cell modules 25 with support layers located upstream of the roof's slope towards the solar cell modules 25 located downstream. If no gap S is provided between adjacent solar cell modules with support layers 25, dust accumulated on the upper surface of the upstream solar cell module with support layer 25 is washed away by rainwater, and then the rainwater containing the dust flows down to the upper surface of the downstream solar cell module with support layer 25, making it easier for dirt to accumulate on the downstream solar cell module with support layer 25.

[0081] In this embodiment, since a gap S is provided, rainwater flowing over the upper surface of the solar cell module 25 with the support layer on the upstream side flows down through the gap S to the bottom 5a of the exterior material substrate 5. Therefore, since rainwater does not flow from the upper surface of the upstream solar cell module 25 with a support layer to the downstream solar cell module 25 with a support layer, dirt is less likely to accumulate on the downstream solar cell module 25 with a support layer.

[0082] The size of the gap S should be such that rainwater does not reach the solar cell module 25 with a support layer adjacent to the upstream side from the solar cell module 25 with a support layer adjacent to the downstream side. This gap should be set appropriately based on the length of the solar cell module, the slope, and the assumed rainfall intensity. In the example shown in Figure 15, either the left or right side of the figure can be considered the upstream side of the water slope, but it is preferable to have the left side as the upstream side because rainwater is less likely to reach the junction box 33. Furthermore, if the right side is the upstream side, it is desirable to install a water drain cover over the portion of the wiring exposed in the gap S so that rainwater flowing down the wiring from the gap S does not travel along the wiring 35 and reach the junction box 33. A suitable water drain cover would be one with a raised section on the downstream side when installed, designed to guide water to the side.

[0083] Rainwater that flows down from the gap S to the bottom 5a of the exterior material substrate 5 flows along the upper surface of the bottom 5a toward the downstream side of the roof. In this case, if the junction box 33, wiring 35, and wiring connection part 37 of the solar cell module 25 with support layer are in contact with the bottom 5a of the exterior substrate 5, there is a risk of them being submerged in water, which is undesirable. In this respect, in this embodiment, as shown in Figure 15, the junction box 33, wiring 35, and wiring connection part 37 are not in contact with the bottom 5a, so they are not submerged in rainwater flowing over the bottom 5a. In particular, if the wiring connection part 37 is submerged in water, electrical system malfunctions are likely to occur, so it is preferable to support the wiring connection part 37 with a support layer 27 or the like so that it is not in contact with the bottom 5a of the exterior material substrate 5.

[0084] As a means of preventing the wiring connection portion 37 from contacting the bottom portion 5a, a wiring support member 39 as shown in Figure 15 may be used, or it may be held in place by a band member fixed to the back surface of the support layer 27. Alternatively, it may be directly bonded to the back surface of the support layer 27. Furthermore, a downwardly convex region may be provided on the support layer 27, and the wiring 35 may be fitted onto the surface side of the support layer 27 (between the protective film 17 and the support layer 27). Furthermore, in cases where there is no support layer 27, such as in the solar cell module 7 (see Figure 4), a wiring support member may be provided on the side wall portion 5b near the horizontal portion 5c of the exterior substrate 5, and the wiring 35 may be held in place by the wiring support member.

[0085] As the wiring support member 39, for example, an Ω-shaped clip can be used, and it is preferable to fix it to the back surface of the support layer 27 by adhesive or the like with the bottom of the clip open. Band clips or cable tie-wrap-type bands can be used as band members, and these may be fixed to the back surface of the support layer 27 by adhesive or other means. Alternatively, two through holes may be made in the support layer 27, and the band members may be positioned so that they pass through the through holes.

[0086] As described above, in this embodiment, by holding the wiring 35 near the lower surface of the solar cell module 7 or the solar cell module 25 with a support layer, the wiring connection portion 37 does not come into contact with the bottom 5a of the exterior material substrate 5, thereby avoiding the risk of the wiring connection portion 37 being submerged in water during rainfall.

[0087] In addition, the solar cell integrated exterior material 1 illustrated in embodiments 1 to 6 above was an example intended for use as a roofing material. However, when the solar cell integrated exterior material of the present invention is used for other purposes, the shape of the exterior material substrate is not limited to this, and hanger members may not be used. Other embodiments of the solar cell-integrated exterior material according to the present invention are described below (not shown). The following is an example of a solar cell-integrated exterior material intended for use as an exterior wall material for buildings.

[0088] Another embodiment of the solar cell integrated exterior material comprises an exterior material substrate, a film-like or sheet-like solar cell module, and a cap member. The exterior substrate has a flat section, a pair of slanted sections that descend toward the structural frame from both ends of the flat section when installed, and a pair of horizontal sections that extend outward in the short-side direction from the slanted sections. On the exterior surface of the exterior substrate, a solar cell module is arranged so as to extend at least between horizontal sections, and its side edges are attached to the area that is horizontal in a plan view via an adhesive layer (corresponding to the first adhesive layer of the present invention), thereby integrating it with the exterior substrate.

[0089] During installation, the horizontal portion of the exterior substrate is fixed to the structural frame with screws or the like. With the exterior material substrate fixed to the structural frame, a cap member is attached so as to straddle the side end of one exterior material substrate and the side end of the other exterior material substrate, which are adjacent to each other in the short-side direction. Specifically, the slanted edge of the exterior substrate is provided with a locking portion for securing the cap member, and the cap member is provided with a fitting portion shaped to fit into the locking portion. The cap member is attached by locking the cap member to the locking portion of one exterior substrate and the locking portion of the other exterior substrate. By attaching a cap member between adjacent exterior substrates, the surface of the exterior substrate and the top surface of the cap member become nearly flush, resulting in a flat appearance.

[0090] By attaching the cap component, the fixing part is no longer exposed to rain, thus preventing corrosion of the screws and the screw holes drilled in the structural frame. Furthermore, the cap member covers at least the side edges of the attachment area for the solar cell module, which is provided on the horizontal part of the exterior material substrate, thereby blocking sunlight and functioning as a sunshade member to protect the adhesive layer. In addition, it also functions as a rain shield member to protect the adhesive layer from rainwater.

[0091] As described above, the present invention can also be provided in a form in which no hanger member is used to fix the exterior material substrate, and the same effects as in Embodiment 1 can be obtained in such a form as well. [Explanation of Symbols]

[0092] 1 Exterior material integrated with solar cells 3 Structural frame 5. Exterior material substrate 5a bottom 5b Side wall part 5c Horizontal part 5d Rising section 5e Hypotenuse 7. Solar cell modules 9 Hanger members 11 Cap member 11a Mating part 11b Extension part 13 Adhesive layer 15 Power generation layer 17 Protective film 19 Tight Frame 21 volts 23 nuts 25 Solar cell modules with support layers 27 Supporter layer 29 Elastic waterproofing material 31 Adhesive layer 33 Junction Box 35 Wiring 37 Wiring connection section 39 Wiring support member S Gap

Claims

1. A solar cell integrated exterior material comprising: a thin sheet molded material in the shape of a folded plate formed with a substantially symmetrical short-side direction, an exterior material substrate with both ends fixed to the structural frame of the structure; a film-like or sheet-like solar cell module; and a cap member attached so as to straddle the side end of one exterior material substrate and the side end of the other exterior material substrate, which are adjacent to each other in the short-side direction, when the exterior material substrate is fixed to the structural frame, The exterior substrate has horizontal portions of approximately equal height and locking portions for locking the cap member at both ends. The solar cell module is arranged so as to extend at least between the horizontal sections, and its side end is attached via a first adhesive layer to the region that forms the horizontal section in a plan view. A solar cell integrated exterior material characterized in that, when the cap member is engaged with the locking portion of one exterior material substrate and the locking portion of the other exterior material substrate, it functions as a sunshade member that covers at least the side edge of the attachment area of ​​the solar cell module and blocks sunlight.

2. A solar cell integrated exterior material comprising: a thin sheet molded material in the shape of a folded plate formed in a substantially symmetrical manner in the short-side direction, an exterior material substrate with both ends fixed to the structural frame of a structure; a film-like or sheet-like solar cell module; a hanger member positioned between the exterior material substrates, which are adjacent to each other in the short-side direction at a predetermined interval, to connect the adjacent exterior material substrates and to fix the exterior material substrates to the structural frame; and a cap member attached to cover the hanger member when the exterior material substrate is fixed to the structural frame by the hanger member, The exterior substrate has, on both ends, a horizontal portion of approximately equal height, a rising portion that rises from the horizontal portion towards the outside when installed, and a slanted portion formed at the tip of the rising portion and inclined toward the center in the short side direction with respect to the rising portion. The solar cell module is arranged so as to extend at least between the horizontal portions, and its side ends are attached via a first adhesive layer to an area that, in a plan view, is at least one of the horizontal portion, the rising portion, or the slanted portion. A solar cell integrated exterior material characterized in that, when the cap member is engaged with the slanted edge portion of one exterior material substrate and the slanted edge portion of the other exterior material substrate, it functions as a sunshade member that covers at least the side edge of the attachment area of ​​the solar cell module and blocks sunlight.

3. The solar cell integrated exterior material according to claim 2, characterized in that both ends of the solar cell module are attached to the hanger member and are sandwiched between the cap member and the exterior material substrate.

4. The solar cell integrated exterior material according to claim 2, characterized in that both ends of the solar cell module are sandwiched between the hanger member and the exterior material substrate.

5. The solar cell module further has a plate-shaped support layer, and both ends of the support layer are attached to the horizontal portion of the exterior material substrate via a second adhesive layer. The solar cell integrated exterior material according to any one of claims 1 to 4, characterized in that the cap member covers the side end of the support layer when locked.

6. The solar cell integrated exterior material according to any one of claims 1 to 4, characterized in that an elastic waterproof member is fitted between the cap member and the solar cell module.

7. The solar cell integrated exterior material according to claim 6, characterized in that the entire attachment area of ​​the solar cell module is covered by at least one of the elastic waterproof member and the cap member.

8. Multiple solar cell modules are attached to a single exterior substrate in a line along its long side, and the wiring of each solar cell module is connected to the wiring of the others via wiring connection parts. The solar cell integrated exterior material according to any one of claims 1 to 4, wherein the wiring and the wiring connection portion are arranged in a space enclosed by the solar cell module and the exterior material substrate, and at least the wiring connection portion is in contact with the bottom of the exterior material substrate.

9. Multiple solar cell modules are attached to a single exterior substrate in the direction of its long side. The solar cell integrated exterior material according to any one of claims 1 to 4, characterized in that a predetermined gap is provided between adjacent solar cell modules so that rainwater does not flow from the upper surface of the solar cell module positioned above to the upper surface of the solar cell module positioned below when the exterior material substrate is fixed to the structural frame.

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