JP3487763B2 - Solar panels for building materials - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a solar cell panel for building materials that can be used as a roofing material.

[0002]

2. Description of the Related Art Conventionally, various devices for arranging solar cell panels on a roof to generate solar power have been proposed. As a method of installing these solar cell panels, a frame is installed on a tile and the solar cell panel is fixed on the frame,
Alternatively, a metal plate is roofed on the base plate, a mount is installed on the metal plate, and the solar cell panel is fixed on the mount. The solar panel itself is used as a roofing material, and the base plate is the same as the roof tile. There is a method of roofing the solar cell panel, etc.

Using the solar cell panel itself as a roofing material,
A structure mounted on a base plate is disclosed in Japanese Patent Application Laid-Open No. 9-268715 (Int. CL E04D 3/362).

As shown in FIG. 9, a building material solar cell panel 100 used as a roofing material has a front substrate 101 made of glass and a back metal plate 102 made of a colored zinc iron plate or a stainless plate. A solar cell 10 made of crystalline silicon, amorphous silicon or the like electrically connected in series or in parallel by connecting leads such as solder or copper foil
3 are arranged and formed by interposing a sealing material 104 made of ethylene vinyl acetate resin (EVA) between the front substrate 101 and the solar cell 103 and between the back metal plate 102 and the solar cell 103, respectively. ing.

The back metal plate 102 is provided with a falling part 106 at the eaves side end and a rising part 107 at the ridge side end, and the corresponding rising part 106 and falling part 107 of the other solar cell panel 1 are provided. Engage with.

To take out electric power from the solar cell 103, the back metal plate 102 is provided with a through hole or a notch, the terminal box 105 is attached to the back metal plate 102, and the lead wire is inserted through the through hole of the back metal. Then, the lead wire is connected to the terminal box 105.

The building material solar cell panel 100 constructed as above is installed on the roof as follows. First, the solar panel 100 for building materials is arranged on the base plate 110,
Solar cell panel 100 for building materials using screws etc.
To fix. Then, the falling part 106 of the building material solar cell panel 100 located on the upper side (ridge side) is engaged with the rising part 107 of the solar cell panel 100 located on the lower side, and after the two are coupled, a screw screw is attached. The building material solar cell panel 100 is fixed to the base plate 110 by using it.
Thereafter, the solar cell panels 100 ... Are arranged in a tile shape on the base plate 110 by sequentially performing this work.

[0008]

In the solar cell panel 100 for building materials described above, a fire resistance problem occurs when there is a flying spark on the surface of the solar cell panel 100 due to a fire from an adjacent land or the like. That is, when the surface substrate 101 is damaged due to a flying fire or the like, panel constituent materials other than metal materials, such as EVA resin, are burned. Then, the fire may spread from the through-hole portion of the rear surface metal plate 102 where the terminal box 105 is attached, and may burn up to the terminal box 105 portion and spread to the roof roof plate, which is not sufficient for fire resistance. .

The present invention has been made in view of the above-mentioned conventional problems, and does not impair the waterproof performance as a roofing material, and a solar cell for a building material in which fire spreads to a base plate even when a fire occurs. The purpose is to provide a panel.

[0010]

A solar cell panel for building material according to the present invention is a solar cell panel for building material in which a solar cell is sealed between a front surface member and a back surface metal member, wherein the back surface metal member is Is provided with a rising portion extending to the surface member side at the ridge-side end and an extending portion extending from the rising portion to the ridge side, and the take-out portion for taking out the electric power generated by the solar cell to the outside at the rising portion. It is characterized in that a lead hole portion through which the wire is inserted is formed.

Further, according to the present invention, a terminal box for taking out electric power output from the solar cell to the outside may be arranged in the extending portion.

With the above-mentioned structure, even if the surface base material is damaged when the surface of the solar cell panel for building materials is ignited when a fire occurs from the adjacent land, it is made of glass or the like. Since the entire lower surface of the surface base material is composed of a back metal member made of metal, the top of the base plate is covered with a metal plate, which prevents fire spread on the base plate of the roof and improves fire resistance. Can be made.

Further, in the solar cell panel for building materials according to the present invention, the solar cell is sealed between the front surface member and the rear surface metal member, and the rear surface metal member has a falling portion whose eaves side end portion extends downward. A building material solar cell panel in which a ridge-side end portion is provided with a rising portion that extends upward, and a falling portion of another building material solar cell panel that is adjacently arranged above the rising portion is engaged. Then, on the back metal member,
The extension part extending from the rising part to the ridge side is provided, and the terminal box is arranged on the back surface metal member at a position located on the extension part of the solar cell panel for building material arranged below. Characterize.

According to the above-mentioned structure, when a fire occurs from the adjacent land, the surface member is damaged due to a jumping fire on the surface of the solar cell panel, and even if the terminal box burns, it extends below the terminal box. Since the existing metal plate is located, the metal plate can prevent the fire from spreading to the field plate of the roof.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a building material solar cell panel according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is a front view.

As shown in the figure, the solar cell panel for building material 1 of the present invention includes a front substrate 2 made of glass and a back metal plate 3 made of a colored zinc iron plate, a stainless plate, or the like.
The solar cells 4 made of crystalline silicon, amorphous silicon, or the like are arranged in series or in parallel and electrically connected by connecting leads such as solder or copper foil. A sealing material 5 made of ethylene vinyl acetate resin (EVA) is interposed between the front substrate 2 and the solar cell 4 and between the back surface metal plate 3 and the solar cell 4, respectively, and the adhesive force of the sealing material 5 is applied. It is integrated.

Since the back surface side of the solar cell panel 1 for building materials described above is composed of the back surface metal plate 3 made of a metal plate such as a colored zinc iron plate or a stainless plate, the back surface metal plate 3 functions as an incombustible material. Excellent in fire resistance.

In the back metal plate 3 according to the present invention, the eaves-side end portion is bent downwardly, the ridge-side end portion is bent upward, and the ridge-side end portion is bent upward. 33 are formed. The leading end of the falling portion 31 is provided with an engaging portion 31a bent in a hook shape so as to engage with the rising portion 32 of the other solar cell panel for building material 1 located below. Also, the rising part 3
2 is formed with a folded-back portion 32a having a U-shaped cross section that engages with the engaging portion 31a of the falling portion 31.

A folding-back portion 34 is provided at the end of the extending portion 33 and is bent upward.

In this embodiment, the falling portion 31, the rising portion 32 and the extending portion 33 are formed by bending a metal plate by pressing or the like. That is,
The back metal plate 3 extends to the end of the folded-back portion 34, is bent upward at the folded-back portion, and is folded back downward at a predetermined position to form the folded-back portion 34. Then, the metal plate is bent in the orthogonal direction from the folded portion 34, the parallel state with the metal plate on the lower surface side continues from the extending portion 33 to the rising portion 32, is bent upward at the rising portion 32, and the folded portion 32a is further bent. It is formed by bending in a U-shape.

The back metal plate 3 described above can of course be formed by other than press working. For example, the falling portion 31, the rising portion 32 and the folded portion 34 are separately formed and attached to a flat metal plate by spot welding or the like. Thus, the back metal plate 3 can be formed.

In this embodiment, the terminal box 6 for extracting electric power to the outside is placed on the metal plate of the extending portion 33. Further, the rising portion 32 is provided with a hole portion 35 through which a lead wire 4a for taking out the output from the solar cell 4 is inserted, and the positive and negative lead wires 4a from the solar cell 4 ... Through, terminal box 6
Are connected to the terminals inside. Furthermore, a pair of positive and negative power cables 9 are screwed or soldered to the terminal portions in the terminal box 6 to be electrically connected and led out to the outside.

The hole 35 for inserting the lead-out wire 4a for taking out the output from the solar cell 4 may be located at any position between the rising portion 32 and the tip end on the metal plate of the extending portion 33.

Next, an example of installation of the above-mentioned solar cell panel for building material 1 on the roof will be described with reference to FIGS. 4 to 6. FIG. 4 is a perspective view showing an installation state of the building material solar cell panel 1 of the present invention, and FIG. 5 is a schematic cross-sectional view of a building material solar cell panel portion that is adjacently installed in the left-right direction.
FIG. 6 is a schematic cross-sectional view at the position of the central portion of the solar cell panel for building materials. The present invention is not limited to the following installation modes.

First, the screw screw 10 is passed through a screw hole provided in the extending portion 33 of the back metal plate 3, and the screw screw 10 is screwed into the base plate 20 to fix the solar cell panel 1 for building materials in the lower portion. To do. At this time, when other building material solar cell panels 1 ... Are arranged in the lateral direction, as shown in FIGS. After arranging it below, the building material solar cell panel 1 and the draining plate 8 are fixed on the base plate 20 with the screw screw 10.

The draining plate 8 is composed of a sheet metal member,
A falling portion 8a formed by bending the eaves side end portion downward,
A rising portion 8b formed by bending the ridge side end portion upward,
It is provided with a lateral rising portion 8c formed by bending the left and right end portions toward the upper inside, and by these existence, water leakage from the gap between the solar cell panels 1 and 1 is received, and drainage is reliably performed. There is.

Next, after the electric power cable 9 drawn out from the terminal box 6 is set in a predetermined position, the falling portion 31 of the other solar panel for building material 1 located on the upper side (ridge side) is lowered. After being engaged with the rising portion 32 of the solar cell panel 1 located at, and joining the two, the back surface metal plate 3
The building material solar cell panel 1 is fixed by inserting the screw screw 10 through the screw hole provided in the extending portion 33 and screwing the screw screw 10 into the base plate 20.

The solar cell panels 1 ... Can be arranged in a roof tile shape on the base plate 20 by sequentially performing this work.

The solar cell panel 1 arranged in this way
In, the water leakage is prevented by the draining plate 8 between the solar cell panels 1 and 1 which are laterally adjacent to each other. The rising part 32 and the falling part 3 are provided between the eaves side and the ridge side.
1, the drainage can be performed, and the folded-back portion 34 at the end of the extending portion 33 can drain the water more reliably.
Water leakage can be prevented. Further, even if water soaks in between the surface substrate 2 and the rising portion 32 and water seeps out from the hole portion 35 to the extending portion 33, the metal plate of the extending portion 33 is below the hole portion 35. In addition to being present, the folded portion 34 prevents water from leaking to the base plate 20.

Further, in the present invention, even if the surface substrate 2 is damaged when the surface of the solar cell panel 1 is blown by a fire from an adjacent ground, the surface substrate 2 made of glass or the like is used. Since the entire lower surface is composed of the back metal plate 3 made of metal, the upper side of the base plate 20 is covered with the metal plate, and the spread of the base plate 20 of the roof can be prevented, and the fire resistance is excellent. .

FIG. 7 is a schematic cross-sectional view at the position of the central portion of a solar cell panel for building materials showing another embodiment of the present invention. The difference between the embodiment shown in FIG. 7 and the embodiment described above is the mounting position of the terminal box 6. The same parts as those of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted to avoid duplication of description.
That is, in the embodiment described above, the terminal box 6 is provided on the extending portion 33 of the back metal plate 3, but in the embodiment shown in FIG. 7, the solar cell panel for building material 1 arranged below is provided. The terminal box 6 is arranged below the rear surface metal member 3 at a position located on the extending portion 33. For this reason, the back surface metal plate 3 in this portion is provided with a through hole for taking out electric power from the solar cell 4.

When the surface substrate 2 is damaged due to a jump or the like on the surface of the solar cell panel 1 when a fire occurs from an adjacent place, panel constituent materials other than metal materials such as EVA resin are burned, and the terminals are There is a case where the area from the through hole of the rear surface metal plate 3 in the box 6 portion to the terminal box 6 portion burns.
However, in the embodiment shown in FIG. 7, since the metal plate of the extending portion 33 is located below the terminal box 6, the metal plate can prevent the fire from spreading to the base plate of the roof.

Since there is no metal plate under the terminal box 6 of the building material solar cell panel 1 located on the most eaves side, a metal plate is arranged on the base plate 20 for fire protection at this portion. It is better to do.

Further, the waterproof function can surely drain water as in the above-mentioned embodiment.

The above-described fixing of the solar cell panel of the present invention to the base plate is not limited to the above-described method, but may be performed by the following method. For example, as shown in FIG.
The stud screws 43 are fixed to the square pipe steel 42 at predetermined intervals, and the threaded portions are projected from the upper surface of the square pipe steel 43. Then, the square pipe steel 42 is fixed to the base plate 41 in the lateral direction of the roof (the longitudinal direction of the so-called "haze"). Extension part 3 of backside metal plate 3 of solar cell panel 1 for building materials
3 is provided with a hole through which the stud screw 43 is inserted, the stat screw 43 is passed through the hole, and a nut to be screwed into the stud screw 43 is screwed into the hole, whereby the building material solar cell panel 1 can be fixed to the roof.

Further, the present invention is a solar cell panel having a structure in which a solar cell made of an amorphous semiconductor such as amorphous silicon is directly formed on a front substrate made of glass, and a back side metal plate is provided on the back side. Can also be applied.

[0037]

As described above, according to the present invention, it is possible to provide a solar cell panel for building material having both fireproof performance and preventive performance.

[Brief description of drawings]

FIG. 1 is a plan view of a solar cell panel for building material according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a front view of a building material solar cell panel according to an embodiment of the present invention.

FIG. 4 is a perspective view showing an installed state of the solar cell panel for building material according to the present invention.

FIG. 5 is a schematic cross-sectional view of the solar cell panel for building material, showing the installed state of the solar cell panel for building material of the present invention, which is installed adjacent in the left-right direction.

FIG. 6 is a schematic cross-sectional view showing the installed state of the solar cell panel for building materials of the present invention, at a position of a central portion of the solar cell panel for building materials.

FIG. 7 is a schematic cross-sectional view at the position of the central portion of a solar cell panel for building materials showing another embodiment of the present invention.

FIG. 8 is a cross-sectional view for explaining another installation method of the solar cell panel for building materials.

FIG. 9 is a schematic cross-sectional view showing an installation state of a conventional solar cell panel for building materials.

[Explanation of symbols]

1 Solar panels for building materials 2 front substrate 3 Back metal plate 4 solar cells 6 terminal box 33 Extension

Claims (3)

(57) [Claims] 1. A solar cell panel for building material, in which a solar cell is sealed between a front surface member and a back surface metal member, wherein the back surface metal member is a rising edge extending toward the front surface member at a ridge side end. A lead hole portion through which a lead-out wire for taking out the electric power generated by the solar cell to the outside is formed in the rising portion, and the extending portion extending toward the ridge side from the rising portion. A solar cell panel for building materials. 2. The solar cell panel for building material according to claim 1, wherein a terminal box for taking out electric power output from the solar cell is arranged in the extending portion. 3. A solar cell is sealed between a front surface member and a back surface metal member, and the eaves side end portion extends downward and the ridge side end portion extends upward in the back surface metal member. A solar cell panel for building materials, which is provided with, and a falling portion of a solar cell panel for other building materials that is arranged adjacent to the rising portion above the rising portion is engaged with the rear surface metal member from the rising portion. An extension part extending to the ridge side is provided, and a terminal box is arranged on the back surface metal member at a location located on the extension part of the solar cell panel for building materials arranged below. Solar cell device for building materials.