JP2021123843A - Fire prevention panel, solar power generation system, and construction method of solar power generation system - Google Patents

Abstract

To prevent the spread of fire in the event of ignition from a solar cell module or a cable member.SOLUTION: A fire prevention panel 2 which is a member different from a solar cell module 1 is provided between a roofing 93 and the solar cell module 1. The fire prevention panel 2 is arranged apart from the roofing 93 and the solar cell module 1 and includes a folded locking part engaging with a pier 94 on the roofing 93. The fire prevention panels 2 adjacent to each other in a water flow direction X are arranged by superposing a lower waterside connection part 22 of one fire prevention panel 2 and a water upper side connection part 24 of the other fire prevention panel 2.SELECTED DRAWING: Figure 4

Description

The present invention relates to a fireproof panel, a photovoltaic power generation system including the fireproof panel, and a method of constructing a photovoltaic power generation system including the fireproof panel.

The photovoltaic power generation system is configured by installing the solar cell module on the roof using a pedestal, installation metal fittings, and the like. As a solar cell module used in a photovoltaic power generation system, a solar cell module that is integrated with a building material and has a solar cell module incorporated in a roof material is also widespread (see, for example, Patent Documents 1 and 2).

The roof of a general house has a structure in which roofing materials such as roof tiles and slate are placed on members such as rafters, field boards (roof base) and roofing (waterproof sheet). The solar cell module integrated with building materials can be installed on the roofing in the same way as roofing tiles. The solar cell modules are roughly classified into four types: "roof-standing type", "steel plate laying type", "steel plate incidental type", and "steel plate-less type". Of these, three types, "steel plate laying type", "steel plate incidental type", and "steel plate-less type" correspond to building material integrated solar cell modules.

The tile-type solar cell module of the "steel plate laying type" is a tile-type solar cell module in which a non-combustible material such as a steel plate is laid on the roofing surface directly under the solar cell module, and the solar cell module is installed on the non-combustible material. The tile-type solar cell module of the "steel plate or the like incidental type" is a solar cell module in which a non-combustible material such as a steel plate is attached to the back surface of the solar cell module, and the solar cell module to which the steel plate or the like is attached is directly installed on the roofing. The "steel plate-less type" tile-type solar cell module is a solar cell module in which a solar cell module having no steel plate or the like attached to the back surface of the solar cell module is directly installed on the roofing.

On January 28, 2019, the Consumer Safety Investigation Committee published an investigation report (Non-Patent Document 1). In Non-Patent Document 1, there is an example in which the process of spreading fire from the solar cell module to the roof (field board) was confirmed by experiments when it was estimated that the solar cell module ignited in the "non-steel plate type" solar cell module. It has been reported that the need for fire protection measures to prevent such fire spread is described.

Japanese Unexamined Patent Publication No. 2014-147286 Japanese Unexamined Patent Publication No. 2013-249582

Consumer Safety Investigation Committee "Self-cause investigation report based on the provisions of Article 23, Paragraph 1 of the Consumer Safety Law / Fire accidents, etc. that occurred from a residential photovoltaic power generation system"

If a solar cell module integrated with building materials or a cable drawn from the solar cell module ignites, there is a risk of serious damage because the source of the fire is close to the roof. Since there is a possibility that the fire spreads to the roofing plate or roofing of the "steel plate-less type" solar cell module, it is important to improve the safety as proposed in Non-Patent Document 1.

In addition, in the tile-type solar cell module of "ancillary type such as steel plate", the cable is installed directly on the roof roofing. For this reason, Non-Patent Document 1 states that even in a "steel plate or the like incidental type" tile-type solar cell module, there is a risk of fire spreading to the roof if the cable ignites.

The present invention has been made in view of the above problems, a fire prevention panel capable of preventing the spread of fire in the event of a fire from a solar cell module or a cable, a photovoltaic power generation system provided with the fire prevention panel, and the sun thereof. The purpose is to provide a method of constructing a photovoltaic power generation system.

In order to achieve the above object, in the present invention, the nonflammable fireproof panel includes a panel main body portion having a rectangular shape in a plan view and a bent locking portion engaged with the engaged member. The panel main body portion has a flat plate shape, and a submerged side connecting portion is provided at one end edge portion extending in the longitudinal direction of the panel main body portion, and the bent locking portion is the panel main body portion. A water upper connection portion is provided on the other end edge portion extending in the longitudinal direction of the panel, and a water upper connection portion connected to another panel main body portion is provided on the water upper side of the bending locking portion. It is characterized by having at least one bent portion parallel to the longitudinal direction of the panel main body portion.

Further, in the fire protection panel having the above configuration, it is preferable that the bent locking portion is formed in a convex shape protruding toward one surface side of the panel main body portion. Further, the panel main body portion and the bending locking portion may be provided integrally or may be separated.

A photovoltaic power generation system using the fire protection panel is also within the scope of the technical idea of the present invention. That is, in a photovoltaic power generation system including at least one solar cell module, a fireproof panel which is a member separate from the solar cell module and has nonflammability between the roofing having a predetermined gradient and the solar cell module. The fire protection panel is provided with a bent locking portion that engages with a crosspiece extending in a direction orthogonal to the slope direction on the roofing, and a plurality of fire protection panels adjacent to the slope direction are provided on the one side. It is characterized in that the edge portion on the water side of the fire protection panel and the edge portion on the water side of the other fire protection panel are connected and arranged.

In the photovoltaic power generation system having the above configuration, the solar cell module is arranged on the fireproof panel with a fixing member interposed therebetween, and the length of the fixing member in the direction orthogonal to the gradient direction is in the fireproof panel. A cable member provided shorter than the length and drawn out from the solar cell module is arranged on the fireproof panel through a space provided outside the end portion of the fixing member in the length direction. Is preferable.

Further, a method of constructing a photovoltaic power generation system using the fire protection panel is also within the scope of the technical idea of the present invention. That is, it is a method of constructing a photovoltaic power generation system including at least one solar cell module, in which a fireproof panel which is a member different from the solar cell module and has nonflammability is arranged on a roofing having a predetermined gradient. The first step of locking the bent locking portion provided on the fireproof panel to the crosspiece extending in the direction orthogonal to the gradient direction, and the fixing member on the fireproof panel locked to the crosspiece. In the first step, a plurality of fireproof panels adjacent to each other in the gradient direction are formed on the water upper edge of one fireproof panel and the other. It is characterized in that it is arranged so as to be connected to the edge of the fireproof panel on the underwater side.

Further, in the construction method of the photovoltaic power generation system having the above configuration, in the second step, it is preferable that the fixing member and the solar cell module are fastened together with the crosspiece by a fastener.

With the above configuration, the fire protection panel can be arranged so as to completely cover the installation area of the solar cell module, and the fire spread can be prevented between the solar cell module and the roofing. It becomes possible to plan.

According to the present invention, in the unlikely event that a solar cell module, cable, or the like ignites, it is possible to prevent the fire from spreading.

It is a top view which shows the schematic structure of the solar cell module used in the photovoltaic power generation system of this invention. It is sectional drawing which includes the eaves side and the ridge side end of the solar cell module of FIG. It is sectional drawing which shows the solar power generation system which concerns on Embodiment 1 of this invention. It is a partially enlarged view of FIG. It is a fire protection panel which concerns on Embodiment 1 of this invention, and is the top view and end view which show the fire protection panel for a general part. It is a fire protection panel which concerns on Embodiment 1 of this invention, and is a top view and an end view which show the fire protection panel for an eaves used on the eaves side. It is a top view and the end view which show the modification of the fire protection panel. FIG. 7A is an enlarged cross-sectional view taken along the line AA in FIG. 7A. It is a top view, an end view and a side view of the eaves side which show the modification of the fire protection panel for an eaves. FIG. 8 is an enlarged cross-sectional view taken along the line BB in FIG. 8A. FIG. 8 is an enlarged cross-sectional view taken along the line CC in FIG. 8A. It is sectional drawing which shows one step of the construction method of the photovoltaic power generation system which concerns on Embodiment 1 of this invention. It is sectional drawing explanatory view which shows the post process of FIG. It is sectional drawing explanatory drawing which shows the post-process of FIG. It is sectional drawing explanatory drawing which shows the part of FIG. 11 enlarged. It is a post-process of FIG. 11, and is the cross-sectional explanatory view which shows the installation state of the solar cell module and the roof tile of the final stage. It is a top view which shows the rear fixing metal fitting used for the said solar power generation system. FIG. 14A is an enlarged cross-sectional view taken along the line DD in FIG. 14A. It is a perspective view which shows the arrangement form of the fire protection panel and a rear fixing metal fitting. It is a plane explanatory view which shows the overlapping degree of the solar cell module and the fire protection panel. It is a top view and an end view which show the fire protection panel which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the solar power generation system using the fire protection panel of FIG. It is sectional drawing which shows the solar power generation system using the fire protection panel which concerns on Embodiment 3 of this invention. It is sectional drawing explanatory drawing which shows the other example of the fire protection panel which concerns on Embodiment 3. It is sectional drawing which shows the solar power generation system using the fire protection panel which concerns on Embodiment 4 of this invention. It is sectional drawing which shows the solar power generation system using the fire protection panel which concerns on Embodiment 5 of this invention.

Hereinafter, the fire protection panel, the photovoltaic power generation system, and the construction method of the photovoltaic power generation system according to the embodiment of the present invention will be described with reference to the drawings.

(Overview of solar cell module)
The basic configuration of the solar cell module 1 used in the photovoltaic power generation system of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 is a plan view showing a schematic configuration of the solar cell module 1. The solar cell module 1 according to the embodiment is a residential solar cell module integrated with building materials that can be installed on the roofing in the manner of roofing tiles.

The solar cell module 1 is referred to as a "steel plate-less type" solar cell module here. Since the solar cell module 1 itself has a known configuration, the configuration of the solar cell module 1 will be briefly described below. In the solar cell module 1 and the constituent members of the photovoltaic power generation system described later, the top surface side which is regarded as the light receiving surface or is directed to the sun is referred to as the upper surface, and the opposite surface is directed toward the roof field plate side. The surface to be used is referred to as the back surface.

The solar cell module 1 has a substantially rectangular solar cell panel 11 that photoelectrically converts sunlight, and a frame 12 arranged on the peripheral edge of the solar cell panel 11. The frame 12 is composed of four module frames attached to each of the four sides of the solar cell module.

The solar cell module 1 has a size corresponding to, for example, two to six working widths of roof tiles. In the solar cell module 1, the front frame 13 attached to the eaves side and the rear frame 14 attached to the ridge side have different shapes on the two opposite sides along the water flow direction (gradient direction) of the roof. ..

The solar cell panel 11 is sealed by sandwiching a solar cell between, for example, one glass plate and a protective layer (back sheet). Alternatively, a solar cell in which a transparent electrode film, a photoelectric conversion layer (semiconductor layer), and a back surface electrode film are sequentially laminated is sandwiched between two glass plates, and the end of each glass plate is sealed. good. To explain the solar cell panel 11 in more detail, a transparent electrode, a photoelectric conversion layer composed of a semiconductor layer, and a back surface electrode layer are laminated in this order on a glass substrate which is a translucent substrate to form a solar cell. The structure is such that a transparent glass substrate, which is a protective plate, is attached to the back surface electrode layer side to seal the gap between the glass substrates.

FIG. 2 is a cross-sectional view including the eaves side and ridge side ends of the solar cell module 1. The front frame 13 and the rear frame 14 are made of, for example, an aluminum material, and the cross-sectional shape perpendicular to the longitudinal direction is basically the same at any location. The cross-sectional structures of the front frame 13 and the rear frame 14 shown in FIG. 2 are merely examples, and the present invention is not limited to this structure.

The front frame 13 is provided with a panel front end holding portion 131 having a substantially U-shaped cross section with an opening on the ridge side. One end of the solar cell panel 11 is fitted and held in the panel front end holding portion 131. The panel front end holding portion 131 and the solar cell panel 11 are adhered to each other by an adhesive or the like, and the front frame 13 is fixed to the solar cell panel 11 by this adhesion. Below the front frame 13, a first engaging portion 132 extending toward the ridge side is provided.

The rear frame 14 is provided with a panel rear end holding portion 141 having a substantially U-shaped cross section with an opening on the eaves side. The other end of the solar cell panel 11 is fitted and held in the panel rear end holding portion 141. The panel rear end holding portion 141 and the solar cell panel 11 are adhered to each other by an adhesive or the like, and the rear frame 14 is fixed to the solar cell panel 11 by this adhesion.

The upper surface 14a of the rear frame 14 is provided with a second engaging portion 142 having a substantially L-shaped cross section, which is erected upward from the upper surface 14a and further bent toward the eaves side. The lower surface 14b of the rear frame 14 is provided with a third engaging portion 143 having a substantially L-shaped cross section, which is erected downward from the lower surface 14b and further bent toward the eaves side.

A reinforcing member 15 for connecting and reinforcing the front frame 13 and the rear frame 14 may be provided on the back surface of the solar cell module 1. The reinforcing member 15 is a strip-shaped or rod-shaped member, and one end is connected to the front frame 13 and the other end is connected to the rear frame 14, so that the front frame 13 and the rear frame 14 are connected to the solar cell. This is to prevent the panel 11 from coming off.

(Embodiment 1)
-Solar power generation system-
FIG. 3 is a cross-sectional view showing a photovoltaic power generation system according to an embodiment of the present invention, and FIG. 4 is a partially enlarged view of FIG.

In the photovoltaic power generation system according to the first embodiment, a plurality of solar cell modules 1 are installed along the water flow direction (gradient direction) X of the slope roof. Further, a plurality of solar cell modules 1 are arranged in an array not only in the water flow direction X but also in the horizontal direction (the girder direction or the beam-to-beam direction in the direction orthogonal to the water flow direction X on the roof). .. The solar cell modules 1 arranged in the horizontal direction are also connected by the frame 12, but since a well-known structure can be used for this connection structure, detailed description thereof will be omitted here.

The photovoltaic power generation system according to the present invention is not limited to a configuration in which a plurality of solar cell modules 1 are arranged in an array, and is configured to include at least one solar cell module 1. All you need is.

The solar cell modules 1 are laid in order from the eaves side to the ridge side. Therefore, in the following description, the solar cell module 1 installed on the eaves side (underwater side in the water flow direction X) of the photovoltaic power generation system is set as the first stage, and the ridge side (water upper side in the water flow direction X). ), The second step, the third step, and so on. Further, each component member such as the roof tile 91 to be laid has an end located on the eaves side as a front end when arranged along the water flow direction X, and an end located on the ridge side as a rear end. do.

As shown in FIG. 3, in the roof on which the photovoltaic power generation system is laid, the roofing 93 is laid on the roofing board 92 having a predetermined slope, and the roofing 93 extends in the horizontal direction orthogonal to the water flow direction X on the roofing 93. The piers 94 are laid at predetermined intervals.

In the construction target area where the photovoltaic power generation system is laid, the solar cell module 1 is fixed to the crosspiece 94 via the eaves metal fitting 4 on the most eaves side and the rear fixing metal fitting (fixing member) 5 at other places. Will be done.

As shown in FIG. 3, the roof tile 91 is locked to the roof tile 94 on the most eaves side, and the eaves tip metal fitting 4 and the front end portion of the eaves fire protection panel 3 are mounted on the roof tile 91, and the roof tile 6 is used for the fastener 6. It is fixed at 94. The first-stage solar cell module 1 is arranged with the front frame 13 locked to the eaves metal fitting 4. The solar cell modules 1 of the second and subsequent stages are arranged on the crosspiece 94 via the fire protection panel 2 for general parts and the rear fixing bracket 5 on the crosspiece 94. The front end portion of the rear fixing bracket 5 is locked to the rear frame 14 of the first-stage solar cell module 1.

Between the roofing 93 and the solar cell module 1, a fire protection panel 2 and an eaves fire protection panel 3 are provided as nonflammable fire protection panels that are separate members from the solar cell module 1. The fire protection panel 2 and the eaves fire protection panel 3 are arranged apart from each other on the back surface side of the solar cell module 1. The fire protection panel 2 and the eaves fire protection panel 3 are made of a nonflammable metal plate-like material, and the material thereof is not particularly limited as long as it is nonflammable, but a steel plate or the like is preferable. Like the solar cell module 1, the fire protection panel 2 and the fire protection panel 3 for eaves are formed to have a size corresponding to, for example, two to six working widths of the roof tile 91.

The fire protection panel 2 and the eaves fire protection panel 3 are arranged apart from the roofing 93 and the solar cell module 1, and are pulled out from the solar cell module 1 between the roofing 93 and the solar cell module 1. A cable member 16 such as a cable 161 and a connector 162 is arranged.

As shown enlarged in FIG. 4, the plurality of fire protection panels 2 (3) adjacent to the water flow direction X are the water upper connection portion 24 (34) of one fire protection panel 2 (3) and the other fire protection panel. The underwater side connecting portion 22 of No. 2 is arranged so as to overlap each other and connected to each other. As a result, the fire protection panel 2 and the eaves fire protection panel 3 are integrally laid under the solar cell module 1 without any gaps to cover the roofing 93. The solar cell module 1 is arranged on the fire protection panel 2 and the eaves fire protection panel 3 together with the cable member 16. As a result, even if the solar cell module 1 or the cable member 16 ignites, it is possible to prevent the fire from spreading to the roofing 93 side.

-Fire protection panel-
The fire protection panel 2 and the eaves fire protection panel 3 used in the solar power generation system will be described with reference to FIGS. 5 and 6. FIG. 5 is a plan view and an end view of the fire protection panel 2 for the general part, and FIG. 6 is a plan view and an end view of the fire protection panel 3 for the eaves used on the eaves side.

The fire protection panel 2 and the fire protection panel 3 for eaves are both members formed of a metal plate, have nonflammability, and are laid on the back surface side of the solar cell module 1 which is an integrated building material. As shown in FIG. 5, the fire protection panel 2 for a general portion includes a panel main body portion 21 having a rectangular shape in a plan view and a bent locking portion 23 that is locked to an engaged member (for example, a crosspiece 94). It is formed in a substantially rectangular shape having a size substantially equal to that of the solar cell module 1. Therefore, in the fire protection panel 2 and the eaves fire protection panel 3 described later, the longitudinal direction corresponds to the direction (horizontal horizontal direction) orthogonal to the water flow direction X on the roofing 93. The fire protection panel 2 is made of one metal plate, and the panel main body portion 21 and the bent locking portion 23 are integrally formed.

The panel main body 21 is provided on the front end side of the fire protection panel 2 and is formed in a flat plate shape having a flat surface. A submerged side connecting portion 22 is provided at an edge portion on the front end side extending in the longitudinal direction of the panel main body portion 21. The underwater connecting portion 22 is arranged on the eaves side on the roofing 93. The underwater connection portion 22 has a flat surface continuous with the flat plate-shaped panel main body portion 21 and has a flat plate shape. Therefore, as shown in the drawing, the panel main body portion 21 and the underwater side connecting portion 22 are not distinguished and are formed in an integral planar shape.

The bent locking portion 23 is provided at the end edge portion on the rear end side extending in the longitudinal direction of the panel main body portion 21. A water upper connecting portion 24 is provided on the rear end side of the bent locking portion 23. The water upper connection portion 24 is arranged on the ridge side on the roofing 93 and is a portion connected to the panel main body portion 21 of the other fire protection panel 2. In the exemplary embodiment, the water upper connection portion 24 is a flat plate having a flat surface like the panel main body portion 21 and the underwater side connection portion 22, and the panel main body portion 21 and the underwater side connection portion 22 are formed. It is extended in parallel with.

As shown in the figure, the bent locking portion 23 has a bent portion 25 parallel to the longitudinal direction of the panel main body portion 21. In the fire protection panel 2 according to the embodiment, the bent portion 25 is formed by bending so as to be convex toward the upper surface side. As a result, the bent portion 25 has an open groove shape on the back surface side, and is provided so as to project convexly on the upper surface side.

Such a bent portion 25 is locked to the crosspiece 94. A plurality of screw holes 26 are provided in the bent portion 25 at equal intervals in the longitudinal direction. Further, a plurality of protruding grounding spikes 27 are provided on the upper surface of the bent portion 25. When the fire protection panel 2 is used as a grounding path, grounding spikes 27 are provided at arbitrary locations (preferably a plurality of locations) to be contact surfaces with other members to generate a pressure contact force between the contacting members. Conduction between members can be performed.

As shown in FIG. 6, the eaves fire protection panel 3 also includes a panel main body portion 31 having a rectangular shape in a plan view and a bent locking portion 33 that is engaged with the engaged member, and is a solar cell module. It is formed in a substantially rectangular shape having a size substantially equal to that of 1. The panel main body portion 31 of the eaves fire protection panel 3 and the bent locking portion 33 are also integrally formed. The bent locking portion 33 is provided with a bent portion 35 projecting convexly toward the upper surface side and a water upper connecting portion 34. The bent portion 35 is provided with a plurality of screw holes 36 and grounding spikes 37.

The eaves fire protection panel 3 is different from the general fire protection panel 2 in that the eaves fire protection panel 3 is provided with a bent portion 32 at the front end portion. The bent portion 32 corresponds to a connecting portion on the underwater side, is erected upward from the panel main body portion 31, and is formed by being bent toward the eaves side. A plurality of grounding spikes 37 are also provided on the bent portion 32. As shown in FIG. 3, the bent portion 32 is arranged together with the eaves tip metal fitting 4 on the roof tile 91 locked to the pier 94 on the eaves side.

-Modification example of fire protection panel-
7A is a plan view and an end view showing a modified example of the fire protection panel 2 according to the first embodiment, and FIG. 7B is an enlarged cross-sectional view taken along the line AA in FIG. 7A. 8A is a plan view, an end view, and a side view seen from the eaves side showing a modified example of the eaves fire protection panel 3 according to the first embodiment, and FIG. 8B is an enlarged cross-sectional view taken along the line BB in FIG. 8A. 8C is an enlarged cross-sectional view taken along the line CC in FIG. 8A.

The fire protection panel 2 and the eaves fire protection panel 3 may be provided with drain holes 28 and 38 for draining rainwater and the like. In the fire protection panel 2 shown in FIG. 7A, a plurality of drain holes 28 are formed in the bent locking portions 23 at equal intervals. More specifically, as shown in FIG. 7B, a drain hole 28 is formed so as to straddle a substantially L-shaped connecting portion between the water upper connecting portion 24 and the bent portion 25.

Further, the screw hole 261 of the fire protection panel 2 is formed in a long hole shape in the bent portion 25. The elongated screw hole 261 is formed long in the longitudinal direction of the fire protection panel 2, and the fastening position can be adjusted within the range of the elongated hole.

As shown in FIGS. 8A and 8B, similarly, in the eaves fire protection panel 3, the bent locking portion 33 is provided with a plurality of drain holes 38 and a plurality of elongated screw holes 361. Further, in the eaves fire protection panel 3, drain holes 38 on the eave side are provided at equal intervals in the rising portion 321 of the bent portion 32. As shown in FIG. 8C, the drain hole 38 on the eaves side is a substantially L-shaped connecting portion between the panel main body portion 31 and the rising portion 321 and is provided so as to penetrate the rising portion 321 side.

As a result, the rainwater or the like that has flowed along the water flow direction X is drained to the back surface side without being collected at the bent portions 25 and 35. In the fire protection panel 2 and the eaves fire protection panel 3, the drain holes 28 and 38 provided on the rear end side (ridge side) are formed in a round hole shape, and the drain holes provided on the front end side (eave side). 38 may be formed in a square hole shape.

The drain holes 28, 38 are preferably arranged at intervals in the longitudinal direction between the screw holes 26 (261) of the fire protection panel 2 and the screw holes 36 (361) of the eaves fire protection panel 3. .. Since the fastener 6 is screwed into the field plate 92 in the screw holes 26 and 36, it is preferable to provide the screw holes 26 and 36 with the drain holes 28 and 38 separated from each other.

Further, the fire protection panel 2 and the eaves fire protection panel 3 may be provided with binding holes 29 and 39 used for holding the cable member 16. As shown in FIG. 7A, the fire protection panel 2 is provided with a plurality of binding holes 29 penetrating the front and back surfaces. In the exemplary embodiment, the binding holes 29 are formed at equal intervals in the edge portion of the water upper connection portion 24 of the fire protection panel 2. Also in the eaves fire protection panel 3 shown in FIG. 8A, a plurality of binding holes 39 are bored in the water upper connection portion 34 at equal intervals.

A linear member such as a binding band is inserted through these binding holes 29 and 39, and the cable member 16 of the solar cell module 1 can be fastened at the positions of the binding holes 29 and 39. At the time of construction of the photovoltaic power generation system, the cable member 16 drawn out from the solar cell module 1 is routed and connected to the cable member 16 of the adjacent solar cell module 1, or the cable 161 is arranged to the wiring inlet. At that time, the cable 161 can be fixed at an appropriate position via the binding holes 29 and 39.

-Construction method of photovoltaic power generation system-
A method of constructing a photovoltaic power generation system using the fire protection panel 2 and the eaves fire protection panel 3 having the above configuration will be described with reference to FIGS. 9 to 13. 9 to 13 are cross-sectional explanatory views showing step by step the construction method of the photovoltaic power generation system according to the first embodiment.

As shown in FIG. 9, the roof tile 91 is installed on the most eaves side. The roof tile 91 is placed by hooking the rear end on the pier 94. The eaves metal fitting 4 is placed on the rear end of the roof tile 91, and the roof tile 91 and the eaves metal fitting 4 are fastened together with a fastener 6 such as a wood screw.

The eaves metal fitting 4 fastened together with the roof tile 91 forms a gap with the eaves side open between the roof tile 91 and the upper surface of the roof tile 91. The first engaging portion 132 of the front frame 13 of the solar cell module 1 is engaged with this gap (see FIG. 10).

After installing the roof tile 91 and the eaves tip metal fitting 4, the eaves fire protection panel 3 is arranged. In the eaves fire protection panel 3, the bent portion 32 is placed on the eaves tip metal fitting 4, and the bent portion 35 is placed on the crosspiece 94. Since the bent portion 35 has a groove shape open on the back surface side, the bent portion 35 is covered with the crosspiece 94 and locked (first step).

As a result, as shown in FIG. 9, the eaves fire protection panel 3 can be installed in a state of being separated from the roofing 93 by providing a space between the roofing panel 3 and the roofing 93. Further, since the bent portion 35 provided in the bent locking portion 33 is locked to the crosspiece 94, the eaves fire protection panel 3 can be stably arranged without slipping down during the construction, and the construction can be performed. You can improve your sex.

The separation distance between the eaves fire protection panel 3 and the roofing 93 is, for example, 1 to 14 mm. By setting the separation distance to 3 mm or more, it becomes easier for water to flow on the roofing 93, and it is possible to improve the safety in the event of a fire as compared with the case where the roofing 93 is in contact with the roofing 93. Further, since the height of the general crosspiece 94 is about 15 mm, setting the separation distance to 10 mm or less makes it easier for the bent portion 35 to be caught on the crosspiece 94.

Next, as shown in FIG. 10, the first-stage solar cell module 1 is installed on the eaves fire protection panel 3. The cable member 16 such as the cable 161 and the connector 162 drawn out from the first-stage solar cell module 1 is also placed on the eaves fire protection panel 3.

A rear fixing bracket 5 is used for installing the first-stage solar cell module 1. 14A is a plan view showing the rear fixing bracket 5, and FIG. 14B is a cross-sectional view taken along the line DD in FIG. 14A.

The rear fixing bracket 5 as a fixing member is made of a metal plate-shaped member, and the eaves side end portion is raised and bent toward the ridge side to form a fourth engaging portion 51 having a substantially L-shaped cross section. It is bent and formed. The fourth engaging portion 51 may be provided discontinuously in the longitudinal direction by forming a plurality of notched portions. At the ridge-side end of the rear fixing bracket 5, an engaging piece 52 hanging down to the back surface side is provided. The engaging piece 52 is formed by making a plurality of slit-shaped cuts in the ridge-side end of the rear fixing bracket 5 and bending the portion sandwiched between the cuts downward. Screw holes 53 are provided between the engaging piece 52 and the fourth engaging portion 51 at predetermined intervals.

As shown in FIG. 10, a rear fixing bracket 5 is attached to the solar cell module 1 in advance as a preliminary step for installing the solar cell module 1. Specifically, the rear fixing bracket 5 is attached to the solar cell module 1 by engaging the fourth engaging portion 51 of the rear fixing bracket 5 with the third engaging portion 143 of the rear frame 14.

Next, the solar cell module 1 provided with the rear fixing bracket 5 is installed on the eaves fire protection panel 3. In this case, the solar cell module 1 is installed by engaging the first engaging portion 132 of the front frame 13 with the eaves metal fitting 4 and placing the rear fixing metal fitting 5 on the crosspiece 94 (second step). The engaging piece 52 of the rear fixing bracket 5 is arranged on the ridge side of the crosspiece 94 to prevent the solar cell module 1 from sliding down due to gravity.

As shown in FIG. 10, the rear fixing bracket 5 and the eaves fire protection panel 3 mounted earlier are fastened together with the crosspiece 94 by a fastener 6 such as a wood screw to fix the solar cell module 1. A plurality of screw holes 36 (361) are formed at predetermined intervals in the eaves fire protection panel 3 (see FIGS. 6 and 8A), and a plurality of screw holes 53 of the rear fixing bracket 5 are arranged corresponding to these. Can be tightened together.

Next, as shown in FIGS. 11 and 12, a fire protection panel 2 for a general part is placed on the ridge side of the first-stage solar cell module 1. The fire protection panel 2 is commonly arranged below the solar cell modules 1 in the second and subsequent stages.

The fire protection panel 2 is arranged by placing the eaves side end portion on the ridge side end portion of the eaves fire protection panel 3 and locking the bent portion 25 to the crosspiece 94 (first step). Here, as shown enlarged in FIG. 12, the underwater connection portion 22 of the fire protection panel 2 is placed on the water upper connection portion 34 of the eaves fire protection panel 3 extending to the ridge side. , Place in a superposed state. The overlapping width W of the underwater connection portion 22 of the fire protection panel 2 and the water upper connection portion 34 of the eaves fire protection panel 3 is preferably about 1 to 30 mm.

As a result, the fire protection panel 2 can be installed by providing a space between the roofing 93 and the roofing 93. Further, since the bent portion 25 of the fire protection panel 2 can be locked and installed on the crosspiece 94, it is possible to prevent the fire protection panel 2 from slipping off during the construction and to stably arrange the fire protection panel 2. , Workability can be improved.

The separation distance between the fire protection panel 2 and the roofing 93 is, for example, 1 to 14 mm. Further, by setting the separation distance to 3 mm or more, water can flow more easily on the roofing 93, and the safety at the time of ignition can be improved as compared with the case where the roofing 93 is in contact with the roofing 93. Since the height of a general crosspiece 94 is about 15 mm, the bent portion 25 can be more easily hooked by the crosspiece 94 by setting the separation distance to 10 mm or less.

After arranging the fire protection panel 2, the second-stage solar cell module 1 is installed on the fire protection panel 2 (second step). The second-stage solar cell module 1 can be installed in substantially the same manner as the first-stage solar cell module 1, except that the first engaging portion 132 of the front frame 13 is attached to the first-stage solar cell module 1. This is a point at which the rear frame 14 is engaged with the second engaging portion 142. As a result, as shown in FIG. 3, the second-stage solar cell module 1 can be installed.

The solar cell modules 1 of the third and subsequent stages can be installed in the same manner as the solar cell modules 1 of the second stage. As shown in FIG. 13, when the solar cell module 1 in the final stage, which is the most ridge side, is installed, the roof tile 91 can be installed further on the ridge side.

FIG. 15 is a perspective view showing an arrangement form of the fire protection panel 2 and the rear fixing bracket 5, and FIG. 16 is a plan explanatory view showing how the solar cell module 1 overlaps with the fire protection panel 2 and the eaves fire protection panel 3. Is. In FIG. 16, the fire protection panel 2 and the eaves fire protection panel 3 are shown with diagonal hatching.

As shown in FIG. 15, the rear fixing bracket 5 is formed so that the length in the longitudinal direction (the direction orthogonal to the water flow direction X on the roof) is shorter than the length in the longitudinal direction in the fire protection panel 2. When constructing the photovoltaic power generation system as described above, the rear fixing bracket 5 previously attached to the solar cell module 1 is positioned substantially in the center with respect to the bent portion 25 of the fire protection panel 2, and both ends in the longitudinal direction. Arrange so as to have a portion that does not overlap with the portion. As described above, the screw holes 26 (261) of the fire protection panel 2 are formed at predetermined intervals, and a plurality of screw holes 53 of the rear fixing bracket 5 are provided corresponding to these. As shown in FIG. 16, for example, the rear fixing bracket 5 is placed while aligning the screw holes 261 and 53 with each other.

As a result, as shown in FIG. 15, the rear fixing bracket 5 is fireproofed with the insertion space 50 of the cable member 16 pulled out from the solar cell module 1 provided at both ends of the rear fixing bracket 5 in the longitudinal direction. It can be arranged on the panel 2.

Here, since the bent portion 25 is provided so as to project convexly toward the upper surface side, the panel main body portion 21 of the fire protection panel 2 is arranged at a position lower than the height at which the rear fixing bracket 5 rides on the bent portion 25. It will be installed (see FIGS. 3, 12, etc.). Therefore, as the insertion space 50 on the fire protection panel 2, a wide space can be secured between the back surface side of the rear fixing bracket 5 and the panel main body portion 21. Further, by providing the insertion space 50 in this way, the risk of pinching the cable 161 in the rear fixing bracket 5 can be reduced.

Then, the rear fixing bracket 5 and the fire protection panel 2 can be fastened together with the crosspiece 94, and the solar cell module 1 can be stably fixed. Although not shown, similarly, in the eaves fire protection panel 3, the insertion space 50 of the cable member 16 can be provided between the solar cell module 1 and the eaves fire protection panel 3.

For example, in the conventional method of constructing a photovoltaic power generation system, the fire protection panel 2 is not provided between the solar cell module 1 and the roofing 93. Therefore, when the cable member 16 is routed, a notch can be appropriately provided in the crosspiece 94 to form a space for inserting the cable.

On the other hand, in the construction method of the solar power generation system according to the present embodiment, the fire protection panel 2 (and the eaves fire protection panel 3) is configured to prevent the spread of fire, and the upper part of the roofing 93 and the fire protection panel 94 are on the fire protection panel 94. Since it is covered with 2, the notch cannot be provided in the crosspiece 94, but as shown in FIG. 15, the solar cell module 1 can be laid by securing the insertion space 50 of the cable member 16. Therefore, the cable member 16 is not directly rolled and arranged on the roofing 93, and the fire protection panel 2 and the eaves fire protection panel 3 are also installed between the roofing 93 and the cable member 16 to prevent the spread of fire. Is possible.

As shown in FIG. 16, the fire protection panel 2 and the eaves fire protection panel 3 are arranged so as to completely cover the installation area of the solar cell module 1, and are interposed between the solar cell module 1 and the roofing 93. NS. When the solar cell module 1 is connected across the upper and lower stages, the cable member 16 is pulled out from the solar cell module 1 installed on the eaves side to the ridge side through the insertion space 50, and is above the fire protection panel 2. It is placed in the solar cell module 1 and can be connected to the cable member 16 of the solar cell module 1 to be installed next.

The cable member 16 may be arranged between the solar cell module 1 and the fire protection panel 2 by being attached to the back surface of the solar cell panel 11 as long as it is on the roofing 93. Further, in the fire protection panel 2 and the eaves fire protection panel 3, the cable members 16 are bound and held at appropriate positions by using the binding holes 29 and 39, and fixed so as not to be arranged on the roofing 93. Is possible.

In particular, since a plurality of binding holes 29 and 39 are arranged in the water upper connection portions 24 and 34, the cable member 16 arranged across the steps of the solar cell module 1 can be used for the fire protection panel 2 and the eaves fire protection. It can be placed on the panel 3 and routed without touching the roofing 93. Further, by binding and holding the cable member 16 using the plurality of binding holes 29 and 39, the cable member 16 is stably arranged along the longitudinal direction of the fire protection panel 2 and the eaves fire protection panel 3. It is also possible.

As described above, according to the photovoltaic power generation system and the construction method thereof according to the first embodiment, the fire protection panel 2 and the eaves fire protection panel 3 are arranged so as to completely cover the installation area of the solar cell module 1. It is interposed between the solar cell module 1 and the roofing 93. Further, a cable member 16 such as a cable 161 and a connector 162 can also be placed on the fire protection panel 2 and the eaves fire protection panel 3. Therefore, even if the solar cell module 1 or the cable member 16 or the like ignites, the presence of the fire protection panel 2 and the eaves fire protection panel 3 can prevent the spread of fire. Further, the fire protection panel 2 and the eaves fire protection panel 3 can be smoothly drained along the water flow direction X by the drain holes 28 and 38 for preventing rainwater and the like from accumulating.

Therefore, if a non-combustible material such as a steel plate is not attached to the solar cell module 1 itself, even if the solar cell module 1 or the cable member 16 ignites, the spread of fire is prevented, resulting in a photovoltaic power generation system having high fire protection performance. can do.

In the present invention, the installation form of the solar cell module is not limited to the "type without steel plate or the like". That is, even when the installation form of the solar cell module is "ancillary type such as a steel plate", it is possible to prevent the spread of fire when the cable ignites by applying the present invention. The sizes of the fire protection panel 2 and the eaves fire protection panel 3 can be appropriately changed according to the size of the solar cell module 1, and are not limited to those illustrated.

Further, in the photovoltaic power generation system and the construction method thereof according to the present embodiment, the tile 91 is installed on the eaves side of the first-stage solar cell module 1, but the present invention is not limited to this. , The solar cell module 1 on the first stage from the eaves side may be installed. In this case as well, as in the case of installing the roof tile 91 on the eaves side of the first-stage solar cell module 1, the fireproof panel for installing the first-stage eaves is first placed, and then the first-stage solar cell module is installed. 1 is fastened together with the pier 94 by the fastener 6 to fix it. The solar cell modules 1 in the second and subsequent stages can be laid in the same manner as described above.

(Embodiment 2)
In the photovoltaic power generation system of the present invention, the fire protection panel 2 and the eaves fire protection panel 3 can be configured in various other forms. FIG. 17 is a plan view and an end view showing the fire protection panel 2 according to the second embodiment of the present invention, and FIG. 18 is a cross-sectional explanatory view showing a photovoltaic power generation system using the fire protection panel 2 of FIG.

The fire protection panel 2 and the solar power generation system according to the second to fifth embodiments described below are the same as those in the first embodiment in the basic configuration, and are different from each other because the form of the fire protection panel 2 is characteristic. The configuration will be described in detail, and the other configurations will be described by using the same reference numerals as those in the first embodiment, and the description thereof will be omitted. Further, although not shown, the eaves fire protection panel 3 used on the eaves side may have the same configuration as the fire protection panel 2 described in each embodiment.

In the present invention, the connection form between the underwater side connection portion 22 and the water side connection portion 24 of the fire protection panel 2 is not limited to being arranged so as to be overlapped with each other as shown in the first embodiment, as shown in FIG. In addition, the water upper connection portion 24 of the fire protection panel 2 may have a bent step portion 241.

In this case, a plurality of slit-shaped notches are formed at the ridge side end of the water upper connection portion 24, and the portion sandwiched between the notches is bent downward and further bent toward the ridge side to form the step portion 241. Is provided. As shown in FIG. 18, in order to arrange the fire protection panel 2, the underwater connection portion 22 is locked by being inserted into the step portion 241 of the fire protection panel 2 on the eaves side which is installed earlier. Can be done. The water upper connection portion 24 of the fire protection panel 2 on the eaves side and the water lower connection portion 22 of the fire protection panel 2 on the ridge side adjacent thereto are superposed and stably arranged.

As a result, the fire protection panel 2 can be installed by providing a space between the roofing 93 and the roofing 93. Further, since the bent portion 25 of the fire protection panel 2 can be locked and installed on the crosspiece 94, the fire protection panel 2 can be prevented from slipping off during the construction, and the workability can be improved. Further, since the fire protection panel 2 is provided with the step portion 241, the fire protection panel 2 can be arranged more stably. Similarly, the water upper connection portion 34 of the eaves fire protection panel 3 may also be provided with a step portion so that it can be plugged and connected.

Although not shown, it is preferable that the fire protection panel 2 according to the present embodiment is also provided with the grounding spike 27, the drain hole 28, and the binding hole 29.

(Embodiment 3)
FIG. 19 is a cross-sectional explanatory view showing a photovoltaic power generation system using the fire protection panel 2 according to the third embodiment of the present invention, and FIG. 20 is a cross-sectional explanatory view showing another form of the fire protection panel 2 according to the third embodiment. Is.

The fire protection panel 2 according to this embodiment is configured to include fitting portions 221 and 242 in which the underwater side connecting portion 22 and the underwater side connecting portion 24 are bent and can be fitted and connected to each other. .. In the fire protection panel 2 shown in FIG. 19, the underwater fitting portion 221 formed by folding back to the back surface side is fitted and connected to the water upper fitting portion 242 formed by folding back to the upper surface side. Further, in the fire protection panel 2 shown in FIG. 20, the underwater fitting portion 221 formed by folding back to the upper surface side is fitted and connected to the water upper fitting portion 242 formed by folding back to the back surface side. ..

As a method of constructing the photovoltaic power generation system, the water upper fitting portion 242 of the fire protection panel 2 on the eaves side installed earlier is fitted with the underwater fitting portion 221 of the fire protection panel 2 on the ridge side to be installed later. It can be plugged in and locked to connect to each other. The underwater fitting portion 221 and the water upper fitting portion 242 can be easily formed by bending the end portions of the fire protection panel 2, and the plurality of fire protection panels 2 are connected and arranged more stably. be able to.

(Embodiment 4)
FIG. 21 is a cross-sectional explanatory view showing a photovoltaic power generation system using the fire protection panel 2 according to the fourth embodiment of the present invention.

In the fire protection panel 2 according to this form, the panel main body portion 210 and the bent locking portion 230 are configured as separate bodies. Both end edges extending in the longitudinal direction of the separate panel main body 210 and both end edges extending in the longitudinal direction of the bent locking portion 230 are formed so as to be connectable to each other.

As shown in FIG. 21, for example, fitting portions (connection portions) 211 and 211 that can be fitted and connected to each other are provided on both end edges of the panel main body 210 on the eaves side and the ridge side. On the other hand, fitting portions (connection portions) 231 and 231 that can be fitted and connected to each other are provided on both end edges of the bent locking portion 230 on the eaves side and the ridge side.

As a result, the fitting portion 231 of the bent locking portion 230 can be connected to the fitting portion 211 of the panel main body portion 210 to form an integrated fire protection panel 2, and the bent locking portion 230 can be formed on the water. In the side connection portion 240, the fire protection panel 2 on the ridge side can be stably arranged via the fitting portions 211 and 231. Since the panel main body 210 and the bent locking portion 230 are separate bodies, the panel main body 210 can also be applied to the eaves fire protection panel 3, and the versatility is enhanced.

(Embodiment 5)
FIG. 22 is a cross-sectional explanatory view showing a photovoltaic power generation system using the fire protection panel 2 according to the fifth embodiment of the present invention.

In the fire protection panel 2 according to this form, the panel main body portion 21 and the bent locking portion 23 are integrally formed. The panel main body 21 has a flat plate shape and is provided with a submerged connecting portion 22 at the edge portion. The underwater connection portion 22 has a flat plate shape that is continuous with the flat plate-shaped panel main body portion 21. The bent locking portion 23 has not a groove-shaped bent portion (25) as shown in the above embodiment, but has a bent portion 251 having a substantially L-shaped cross section that is locked to the rear end of the cross section 94. ing.

As a result, the configuration can be made simpler than that of the fire protection panel 2 shown in the above embodiment, and the bent portion 251 having a substantially L-shaped cross section is locked to the crosspiece 94 during construction. It can be easily placed. The water upper connection portion 24 of the fire protection panel 2 to be arranged later is overlapped and connected to the water side connection portion 22 of the fire protection panel 2 installed earlier.

As described above, the fire protection panel 2 (and the eaves fire protection panel 3) according to any of the embodiments can be installed at a distance from the roofing 93 to prevent the spread of fire between the roofing panel 11 and the solar cell panel 11. It will be lucrative. Further, since the bent portions 25, 251, 35 provided in the bent locking portions 23, 33 are locked to the crosspiece 94, the fire protection panel 2 and the eaves fire protection panel 3 do not slip off during the construction and are stable. It can be arranged in a specific manner, and the workability can be improved.

Although the present invention has been described above, the embodiments disclosed this time are examples in all respects and do not serve as a basis for limited interpretation. Therefore, the technical scope of the present invention is not construed solely by the above-described embodiments, but is defined based on the description of the claims. It also includes all changes within the meaning and scope of the claims.

1 Solar cell module 16 Cable member 2 Fire protection panel 21, 210 Panel body 211 Fitting part (connection part)
22 Underwater side connection part 221 Underwater side fitting part (fitting part)
23, 230 Folded locking part 231 Fitting part (connection part)
24, 240 Water upper connection part 241 Step part 242 Water upper fitting part (fitting part)
25, 250, 251 Folded parts 26, 261 Screw holes 27 Grounding spikes 28 Drain holes 29 Bundling holes 3 Fire protection panels for houses (fire protection panels)
31 Panel body 32 Bending 33 Bending locking 34 Water upper connection 35 Folding 36, 361 Screw holes 37 Grounding spikes 38 Eaves drain holes 39 Binding holes 4 Eaves metal fittings 5 Rear fixing metal fittings (fixing member)
51 4th engaging part 52 Engaging piece 53 Screw hole 6 Fastener 91 Tile 92 Field board 93 Roofing 94 Pier

Claims (15)

It is a nonflammable fire protection panel
The panel body, which has a rectangular shape in a plan view,
It is provided with a bent locking portion that is engaged with the engaged member.
The panel main body has a flat plate shape, and a submerged connection portion is provided at one end edge portion extending in the longitudinal direction of the panel main body.
The bent locking portion is provided at the other end edge portion extending in the longitudinal direction of the panel main body portion, and is connected to the other panel main body portion on the water upper side of the bent locking portion. Is provided,
The bent locking portion is a fire protection panel having at least one bent portion parallel to the longitudinal direction of the panel main body portion. In the fire protection panel according to claim 1,
The bent locking portion is a fire protection panel having a convex shape protruding toward one surface side of the panel main body portion. In the fire protection panel according to claim 1 or 2.
A fire protection panel characterized in that the panel main body portion and the bent locking portion are integrally provided. In the fire protection panel according to claim 1 or 2.
The panel main body and the bent locking portion are formed separately.
Both end edges extending in the longitudinal direction of the panel main body and both end edges extending in the longitudinal direction of the bending locking portion are provided with connecting portions that can be connected to each other, and the bending engaging portion is provided in the panel main body. A fireproof panel featuring a series of stops. In the fire protection panel according to any one of claims 1 to 4.
The underwater connection portion is a fire protection panel characterized in that it has a flat plate shape continuous with the panel main body portion. In the fire protection panel according to any one of claims 1 to 5.
The water upper connection portion is a fire protection panel characterized in that it has a flat plate shape parallel to the panel main body portion. In the fire protection panel according to any one of claims 1 to 5.
The water upper connection portion is a fire protection panel having a step portion. In the fire protection panel according to any one of claims 1 to 4.
At least one of the underwater side connection portion and the water upper side connection portion is provided with a fitting portion that is bent and can be connected by fitting the underwater side connection portion and the water upper connection portion to each other. A fireproof panel that features that. In the fire protection panel according to any one of claims 1 to 8.
A fire protection panel characterized in that a drain hole is formed on the water upper side of the bent locking portion. A photovoltaic power generation system that includes at least one solar cell module.
A nonflammable fire protection panel, which is a separate member from the solar cell module, is provided between the roofing having a predetermined gradient and the solar cell module.
The fire protection panel includes a bent locking portion that engages with a crosspiece extending in a direction orthogonal to the slope direction on the roofing.
The plurality of fire protection panels adjacent to each other in the gradient direction are arranged such that the water upper edge portion of one fire protection panel and the water lower edge portion of the other fire protection panel are connected and arranged. Photovoltaic system. In the photovoltaic power generation system according to claim 10,
The fire protection panel is a photovoltaic power generation system characterized in that both the underwater side and the water upper side edge portions are formed in a flat plate shape and are arranged so as to be overlapped with each other. In the photovoltaic power generation system according to claim 10,
The photovoltaic power generation system is characterized in that the fire protection panel is provided with a locking portion capable of engaging with each other at at least one of the edge portions on the lower side and the upper side of the water, and is arranged so as to be engaged with each other. .. In the photovoltaic power generation system according to any one of claims 10 to 12.
The solar cell module is arranged on the fire protection panel with a fixing member interposed therebetween.
The fixing member is provided so that the length in the direction orthogonal to the gradient direction is shorter than the length in the fire protection panel.
A photovoltaic power generation characterized in that a cable member drawn out from the solar cell module is arranged on the fireproof panel through a space provided outside the end portion of the fixing member in the length direction. system. A method of constructing a photovoltaic power generation system that includes at least one solar cell module.
A fireproof panel that is a separate member from the solar cell module and has nonflammability is arranged on a roofing having a predetermined gradient, and a bent locking portion provided on the fireproof panel is extended in a direction orthogonal to the gradient direction. The first step of locking to the installed crosspiece and
The second step of arranging the solar cell module on the fire protection panel locked to the crosspiece with a fixing member interposed therebetween.
In the first step, a plurality of fire protection panels adjacent to each other in the gradient direction are arranged by connecting the water upper edge portion of one fire protection panel and the water lower edge portion of the other fire protection panel. A method of constructing a photovoltaic power generation system characterized by. In the method of constructing a photovoltaic power generation system according to claim 14,
The second step is a method of constructing a photovoltaic power generation system, characterized in that the fixing member and the solar cell module are fastened together with the crosspiece by a fastener.

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