JPH11159062A - Roof tile with solar cell - Google Patents

Abstract

(57) [Summary] [Problem] To fasten solar cells and roof tiles quickly, firmly, and at low cost by extremely simple work without performing complicated processes and troublesome roof construction. To provide a roof tile with a solar cell. SOLUTION: This is a roof tile with a solar cell in which a solar cell is disposed in a concave portion provided on the surface of the roof tile, and the solar cell is a peripheral tile surface and a side surface of the solar cell and a roof tile connected thereto. A roof tile with a solar cell, wherein the roof tile with the solar cell is disposed by a fixing tool having a substantially T-shaped cross section in contact with the outer peripheral surface of the concave part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a roof tile with a solar cell.

[0002]

2. Description of the Related Art Solar power is generated by using the inexhaustible energy of sunlight to help solve global environmental problems such as greenhouse effect caused by harmful exhaust gas and carbon dioxide gas generated by mainstay thermal power generation. , As one of the alternative energy,
Roofs with solar cells and roof tiles that use the roof of a house as a power generation space have been developed. Conventionally, as such a roof tile with a solar cell, for example, in Japanese Utility Model Laid-Open No. 4-28524,
A shallow recess is provided on the surface of the flat tile body, and the solar cell is protruded from the surface of the flat tile body in the recess and is fixed with an adhesive. (Japanese Patent Application Laid-Open No. HEI 10-251566) discloses a roof tile with a solar cell, in which the entire module is roofed so as to protrude from the roof surface.

However, the tile with a solar cell disclosed in Japanese Utility Model Laid-Open No. 4-28524 is a tile with a solar cell protruding from the surface of a flat tile body and fixed with an adhesive, and is strong throughout the day. Since it is used in an environment exposed to the sun's rays and sometimes by strong winds such as typhoons, the adhesive strength may be reduced due to the deterioration of the adhesive, and the solar cell element may fall off from the sloped surface of the roof. There was something.

Japanese Patent Application Laid-Open No. 57-68454 discloses that
The upper edge of the long side of the rectangle is cut off from both the left and right sides, a shallow recess is provided on the surface along the lower edge of the pentagonal flat tile body, and the solar cell is fixed to the recess with an adhesive. The disclosed tile with a solar cell is disclosed.

However, the tile with a solar cell disclosed in Japanese Patent Laid-Open Publication No. Sho 57-68454 is flat, so that it is easy to manufacture the tile body including fixing of the solar cell. The same roofing method as that used for tiles is adopted. To prevent rainwater from blowing, the overlapping allowance is several times the exposed surface of the roof, and each roof tile is a simple but robust method. In addition to taking a lot of man-hours to fix the roof base material, such as a baseboard, the roofing method has problems such as insufficient rain closing.

Japanese Patent Application Laid-Open No. 5-243598 discloses that
A roof panel with a solar cell in which a solar cell module is attached to a roof panel main body via a spacer and a ventilation layer is formed between the roof panel main body and the solar cell module is disclosed. However, the roof panel with solar cells disclosed in Japanese Patent Application Laid-Open No. 5-243598 has a rectangular plywood with an asphalt roofing on the upper surface,
A prismatic spacer is fixed with an adhesive on the upper surface of the roof panel body to which a plurality of vertical core members and horizontal core members are fixed,
Since the solar cell module has a box-shaped structure provided by forming a ventilation layer between the roof panel body and the solar cell module via the prismatic spacer, these roof panels with solar cells are provided. Fixing to the roof base material itself is a difficult task, and requires a dedicated fixing stand.

In addition, a complicated technique and a large number of man-hours are required for waterproofing the connection between the roof panels with solar cells individually installed on the above-mentioned dedicated fixing stand. There is also a problem with the roofing method, for example, it is difficult to easily process it by the construction method.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above facts, and has as its object
Fastening of solar cells and roof tiles can be done quickly and extremely easily without complicated processes and troublesome roof construction.
An object of the present invention is to provide a roof tile with a solar cell that can be stiffly and inexpensively laid.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a roof tile with a solar cell in which a solar cell is disposed in a concave portion provided on the surface of the roof tile. The gist of the present invention is a roof with solar cells, which is disposed in the roof tile recess by a fixing device having a substantially T-shaped cross section in contact with the surface, the side surface, and the surface of the recess outer peripheral edge of the roof tile adjacent thereto. .

The solar cell used in the present invention is not particularly limited. For example, the solar cell is made of a material such as a silicon-based semiconductor, a compound-based semiconductor, etc. Semiconductors. Among these solar cells, crystalline silicon solar cells, in particular, are suitably used in outdoor applications such as roof tiles with solar cells due to high reliability, energy conversion efficiency, and the like. At present, amorphous silicon solar cells are expected to be low-cost thin-film solar cells although the energy conversion efficiency is slightly lower than the crystalline silicon solar cells at present.

The solar cell may be a module in which a large number of elements composed of cells of a crystalline semiconductor, a compound semiconductor, or a stacked structure of these semiconductors and an amorphous semiconductor are integrated on a single substrate. A module composed of one large-area amorphous silicon solar cell element may be used. Further, in these solar cells, a surface protective material having high transparency such as ordinary or tempered glass or an acrylic resin plate may be laminated on the surface.

The roof tile substrate on which the solar cell is disposed is not particularly limited, but examples thereof include inorganic materials such as cement, metal materials such as aluminum and steel, and the like.
An organic material such as polycarbonate or fiber-reinforced plastic or a substrate made of a composite of these materials can be used.

The above-mentioned solar cells are arranged in concave portions provided on the surface of the roof tile substrate, but the degree of fitting of these solar cells into the concave portions is not particularly limited. However, for example, as shown in FIG. 2, the surface of the roof tile base material, that is, the surface of the solar cell may be arranged so as to be flush with the surface of the outer peripheral edge of the concave portion. As shown in the above, the outer peripheral surface of the concave portion and the surface of the solar cell may be provided with a slight step. The degree of fitting of the solar cell into the concave portion is, from the viewpoint of waterproof treatment, the surface of the solar cell is higher than the outer peripheral surface of the concave portion, or is preferably at least flush with the roof surface including the solar cell. From the viewpoint of maintenance, it is preferable to be flush.

For fixing the solar cell, a fixing tool having a substantially T-shaped cross section which is in contact with the peripheral surface and side surface of the solar cell and the peripheral surface of the concave portion of the roof tile adjacent thereto is used.
The fixing device has a substantially T-shaped cross-section in contact with the peripheral surface and side surface of the solar cell fitted into the concave portion provided on the surface of the roof tile base material and the concave peripheral surface of the roof tile adjacent thereto. If it is a fixture, there is no particular limitation on the material, detailed structure, dimensions, etc. Examples of the material include stainless steel sheets, galvanized steel sheets, vinyl chloride resin-coated steel sheets, surface-treated aluminum sheets, etc. Or rust-treated metal or polyacetal (POM), modified polyphenylene ether (PPE, PPO), polysulfone, polyarylate (PAR), polyphenylene sulfide (PPS), polyetheretherketone (PEE)
K), engineering plastics such as polyamide imide (PAI) and polyether imide (PEI).

As shown in FIGS. 3 and 4, for example, a rectangular plate-shaped leg 31 standing along the inner peripheral edge of the concave portion 12 and a top of the leg 31 are perpendicular to the leg 31. And extending to both wings, the peripheral surface of the solar cell and the outer peripheral surface 1 of the concave portion 12 of the roof tile substrate 1 adjacent thereto.
A wing portion 32 and a wing portion 33 in the form of a rectangular plate which contact the outer peripheral edge surface 11 of the recess 12, and a nail hole for fixing the wing portion 33 to the outer peripheral surface 11 of the recess 12. A fixing tool 3 having a substantially T-shaped cross section in which 34 is formed.

The width and height of the leg 31 of the fixture 3 and the width and length of the wings 32 and 33 are determined by the leg 31 of the fixture 3.
The solar cell 2 can be fixed to the L-shaped bent portion formed by the wings 32 and 33, or the fixing device 3 can be fixed to the outer peripheral surface 13 of the concave portion 12 of the roof tile base material 1. If it is not particularly limited, for example, when it is made of a metal plate such as a non-rusted steel plate or a surface-treated aluminum plate, the width of the leg 31 is 5 to 500 mm, and the height is 2 to 500 mm.
About 5 mm, the width of the wings 32 and 33 is 5 to 500 mm,
The length is preferably about 5 to 20 mm, and the nail hole 34 is
About 3 to 5 mmφ is preferable.

The wings 32 and 33 of the fixture 3 are substantially in contact with the peripheral surface of the solar cell 2 and a substantial area of the outer peripheral surface 11 of the concave portion 12 of the roof tile substrate 1 adjacent thereto. The shape is not particularly limited as long as it has a flat portion that can be formed.
0, the wings 3 of the fixture 3 shown in FIG.
The corners of 2 and 33 may be rounded, and as shown in FIG. 11, two cuts 301 are formed near the center of the long side of the plate-shaped body 300 at right angles to the long side. A fixture 300 having two wings on the left and right sides of the foot 310 by bending the plate between the cuts by 90 ° to form a leg 310. Is also good. The wings formed on the left and right sides of the leg 310 are divided into wings 320 and 330 on the right and left sides of a straight line where the plate 300 and the surface formed by the leg 310 intersect. A nail hole 340 for nailing the outer peripheral edge surface 11 of the concave portion 12 of the tile base material 1 is formed.

Further, as shown in FIG. 12, a plurality of fixing tools shown in FIG. 11 (three in the drawing) may be connected in the longitudinal direction. .
The nail holes 340 in the wings of the fixture are generally formed on the outer surface of the roof tile base in order to increase the power generation efficiency of the solar cell as much as possible. It is not limited.

Further, as described above, the fixing device may be one in which the leg and the wing are integrally formed or processed. However, as shown in FIG. 13, the leg 311 and the wing are combined. 3
21 and 331 may be composed of separate members, and when they are overlapped and nailed to the roof tile base material at the time of roof construction work, the function of the fixing tool may be given. Of course, both may be arranged side by side and fixed separately. The nail holes are indicated by 341 and 342.

When there is a step between the peripheral surface of the solar cell and the outer peripheral surface of the concave portion, the horizontal position of both wings 32 and 33 is also changed as shown in FIG. May be provided. The fixing device shown in FIG. 8 has a configuration in which the peripheral surface of the solar cell slightly protrudes upward from the outer peripheral surface of the concave portion of the roof tile base material, like the roof tile with a solar cell shown in FIG. Used for roof tiles with solar cells. Further, in the fixture shown in FIG. 9, the peripheral surface of the solar cell is slightly depressed below the outer peripheral surface of the concave portion of the roof tile base material, like the roof tile with the solar cell shown in FIG. It is used in the roof tile with the solar cell having the configuration.

The screw 4 is not particularly limited, and is appropriately selected and used depending on the type of the roof tile base material, the number of fixing portions, and the like. In order to further increase the fixing strength,
For example, it may be reinforced by driving an anchor or the like into a screw to be used. Further, in order to increase the degree of freedom of the screwing position, the nail hole may be formed as a long hole 343 as shown in FIG.

The length of the screw is preferably equal to or less than the thickness of the roof tile base material of the roof tile with a solar cell if it is only fixed to the roof tile with a solar cell. If there is a possibility that the through-hole may penetrate the back side of the roof tile substrate, for example, a fixing seat having a thickness corresponding to the surface of the roof tile substrate or a washer having a thickness corresponding to the screw hole may be provided. It is possible to avoid penetration to the back side by taking measures such as interposing. Further, in order to prevent rainwater from entering from the screw holes, for example, a means such as interposing a waterproof packing on the back surface of the substrate of the fixing bracket, or covering a waterproof cap on the head of the screw can be used. .

As described above, a roof tile with a solar cell in which a solar cell is provided in a concave portion provided on the surface of a roof tile base material,
From the eaves toward the ridge, a roof base material 5 such as a field plate is provided near the periphery where the roof tiles with solar cells above the water surface partially overlap the upper edge and side edges of the roof tiles with solar cells below the water. And nails are sequentially laid. In addition, for nailing of the roof tile with a solar cell, a nail hole including a nailing pedestal and a through hole is provided near the periphery of the roof tile base material. Depending on the width of the roof tile, for example, a plurality of the nail holes are provided at intervals of 50 to 300 mm in the width direction of the roof tile. The roof tiles with solar cells are firmly fixed between the roof base materials.

As described above, the roof tile with a solar cell according to the present invention includes a fixing bracket having a substantially T-shaped cross section which is in contact with the surface and the side surface of the solar cell peripheral portion and the concave outer peripheral surface of the roof tile adjacent thereto. By attaching it to the roof tile base material with extremely simple work such as screwing, the solar cell arranged in the concave part on the surface of the roof tile base material can be fixed securely, so it is sprayed on the roof that has been laid There is no danger of the solar cell being lifted or detached by wind pressure.

As described above, the roof tile with a solar cell according to the present invention is such that the solar cell is previously mounted in the concave portion on the surface of the roof tile base material by the fixing bracket before the roofing. When laying roof tiles with batteries, compared to the usual roof tiles, the output cord of the solar cell can be connected to the wiring prepared in advance by simple work such as plugging in an outlet attached to the tip. Since only the number of man-hours for connecting to the roof is added, the roof construction work becomes extremely easy, and therefore, the roof construction cost can be reduced.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments.

(Example 1) FIG. 1 shows an example of a roof tile substrate, a solar cell, and a fixture which were disassembled in a vertical direction and translated in order to explain an assembling process of a roof tile with a solar cell according to the present invention. It is a perspective view. FIG. 2 is a perspective view showing an example of a roof tile with a solar cell of the present invention obtained by assembling the members shown in FIG.

FIG. 4 is a cross-sectional view of the state in which the roof tile with a solar cell shown in FIG. 2 is laid on a roof base material, which is cut from the roof ridge toward the eaves. It is a perspective view which shows the roof with the solar cell laid.

In FIG. 1 to FIG. 5, reference numeral 1 denotes a roof tile substrate made of cement, in which a solar cell 2 is fitted into a shallow recess 12 formed in the surface of the roof tile substrate 1, and 2 is fixed to the roof tile substrate 1 by a fixture 3 having a substantially T-shaped cross section in contact with the peripheral surface and side surface of the solar cell 2 and the concave surface 12 outer peripheral surface 11 of the roof tile substrate 1 adjacent thereto. ing. The fixture 3 shown in FIG. 3 was used.

In the vicinity of the water-side peripheral edge 11 of the roof tile base material 1,
A nail hole pedestal 11a and a nail hole 11b composed of a through hole are formed. In addition, the solar cell 2 has a thickness of 60 mm × 60 made of crystalline silicon on the back surface of the glass plate 20 having a thickness of 3 mm.
The solar cell elements 21 of mm size are attached in 3 rows × 5 columns and are mutually wired. Both surfaces of the solar cell element 21 have a laminated structure in which a fluororesin-based back film is laminated via a sealing material made of an ethylene-vinyl acetate copolymer having a thickness of 0.4 mm.

The roofing work of the roof tile with the solar cell shown in FIG. 2 is laid from the eaves toward the ridge similarly to the normal roofing work, but as shown in FIG. Roof tiles with solar cells are struck vertically on the roof base material 5, and are sequentially laid on the water side. As shown in FIG. 2, the roof tile with a solar cell includes a nailing pedestal 1 provided on a peripheral portion 13 on the right side toward the water surface similarly to the water surface.
3a and a nail hole 13b composed of a through hole are provided,
The nail 6 is driven into these nail holes 13b as described above, and is fixed to the roof base material 5 in the left-right direction.

The rain on the left and right sides of the roof slope of the roof tile 1 with solar cells is not particularly limited as long as it does not hinder the arrangement of the solar cells 12 on the surface of the roof tile base material 1. However, as shown in FIG. 2, for example, the right edge 13 in the drawing of the roof tile base material 1 is bent so as to be located below by the thickness of the left edge 14 to form the receiving portion 13. The left edge portion 14 of the roof tile base material 1 overlaps with the receiving portion 13 so as to be lifted to form a covered portion 14 and is connected to the left and right.

The receiving portion 13 is provided with a rainwater guide groove formed from the upper side of the water, merged in the vicinity of the central portion, and successively flows down the surface of the roof tile with solar cells on the lower side. It has been done.

As described above, the roof tile with a solar cell according to the present invention is sequentially laid as shown in FIG. 5, and the output cable 22 drawn to the water-side edge of the roof tile with a solar cell. Are sequentially connected to the adjacent output cable 22 to complete the roof construction, and the solar power generation system is constructed.

(Embodiment 2) In a second embodiment of the roof tile with a solar cell according to the present invention, as shown in FIG. 6, the solar cell 2 is placed in a shallow concave portion 12 provided on the surface of the roof tile base material 1. The surface is fitted slightly projecting from the surface of the roof tile base material 1, and FIG.
Steps are attached to the wing portions 322 and 332 shown in FIG. 3 and have a substantially T-shaped cross-section in contact with the surface and side surface of the peripheral portion of the solar cell 2 and the concave portion 12 outer peripheral surface 11 of the roof tile substrate 1 adjacent thereto. It is fixed to the roof tile base material 1 by the fixing bracket 302. Using the roof tile with a solar cell, the roof tile with a solar cell 1 was laid in the same manner as in Example 1 to complete the roof construction.

(Embodiment 3) In a third embodiment of the roof tile with a solar cell according to the present invention, as shown in FIG. 7, the solar cell 2 is placed in a shallow concave portion 12 provided on the surface of the roof tile base material 1. The surface is slightly buried from the surface of the roof tile base material 1 and fitted.
Steps are attached to the wing portions 323 and 333 shown in (1), and a substantially T-shaped cross section in contact with the surface and side surface of the peripheral portion of the solar cell 2 and the surface of the water-side peripheral portion 11 of the concave portion 12 of the roof tile substrate 1 adjacent thereto It is fixed to the roof tile base material 1 by a fixing fixture 303 having a shape. Using the roof tile with a solar cell, the roof tile with a solar cell 1 was laid in the same manner as in Example 1 to complete the roof construction.

(Embodiments 4 to 8) Instead of the fixture 3 of the first embodiment, the fixtures 305, 306, 3 shown in FIGS.
Roof tile 1 with a solar cell was laid in the same manner as in Example 1 except that 07, 301 or 304 was used, and the roof work was completed. That is, in the fourth embodiment, the fixing bracket 305 shown in FIG. 10 is used, and the fixing bracket 305 is formed by rounding the corners of the wings 32 and 33 orthogonal to the leg 31, The wing 33 is provided with a fixing nail hole 34. As shown in FIG. 11, the fixing bracket 306 used in the fifth embodiment includes two parallel cuts 301 and 302 in the short axis direction up to the vicinity of the center line of the long axis of the rectangular sheet metal 300. Insert the cut 3
01 and 302 are bent to a position substantially perpendicular to the sheet metal 300, and the leg 310 is bent together with the leg 310.
The two wings 320 and 330 are formed by being separated by a plane including 10.

The fixing bracket 30 used in the sixth embodiment
Reference numeral 7 denotes a structure in which three fixing brackets 306 of the fifth embodiment are joined in the longitudinal direction, and the same reference numerals are given to portions that function similarly. Fixture 307 used in this embodiment
Can be suitably used particularly in a wide roof portion requiring no special consideration. Fixture 3 used in Example 7
01 is substantially 9 which forms a part of the leg 311 and the wing 331.
It is composed of a part bent at 0 degrees, a plate-like part constituting the wings 321 and 331, and a plurality of parts consisting of nails connecting these parts. And 342, nailing is performed on the roof tile with solar cells as a fixing bracket having a T-shaped cross section similar to the fixing bracket 3 shown in FIG. The fixing bracket 301 of this embodiment is not bulky in its storage,
It is convenient for storage.

The fixture 30 used in the seventh embodiment
4 is a nail hole 34 of the fixture 3 shown in FIG.
4, which has the convenience of finely adjusting the nailing position when fixing the solar cell.

[0040]

Since the roof with solar cells of the present invention is constructed as described above, it is possible to attach the fixture to the roof tile base material by a very simple operation such as screwing.
Since the solar cells provided in the concave portions on the surface of the roof tile base material can be securely fixed, there is no possibility that the solar cells will be lifted or detached by the wind pressure blown on the roof.

As described above, the roof tile with a solar cell according to the present invention is such that the solar cell is previously mounted in the concave portion on the surface of the roof tile base material by the fixing bracket before the roofing. When laying roof tiles with solar cells, the output code of the solar cells is connected to the wiring prepared in advance by simple work such as plugging in an outlet attached to the tip of the roof tiles, compared to normal roof tiles. Only the man-hours required to connect the two are added, and the roof construction work is extremely easy, so that the roof construction cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of an assembly process of a roof tile with a solar cell according to the present invention.

FIG. 2 is a perspective view showing an example of a roof tile with a solar cell of the present invention obtained by an assembling process of the roof tile with a solar cell of FIG.

FIG. 3 is a perspective view showing a fixture used for the roof tile with solar cells of FIG.

4 is a cross-sectional view of the roof tile with a solar cell shown in FIG. 2 laid on a roof base material, cut in a flow gradient direction.

FIG. 5 is a perspective view showing a state in which the roof tile with solar cell of FIG. 1 is laid on a roof base material.

6 is a cross-sectional view showing another example of the roof with solar cells of the present invention in a state where the roof is laid on a roof base material at a position similar to FIG. 4;

FIG. 7 is a cross-sectional view showing another example of the roof with solar cells of the present invention in a state where it is laid on a roof base material at a position similar to FIG.

FIG. 8 is a perspective view showing another example of a fixing bracket used for roofing a roof with solar cells of the present invention.

FIG. 9 is a perspective view showing another example of a fixing bracket used for roofing a roof with solar cells of the present invention.

FIG. 10 is a perspective view showing another example of a fixing bracket used for roofing a roof with a solar cell according to the present invention.

FIG. 11 is a perspective view showing another example of a fixing bracket used for roofing a roof with solar cells of the present invention.

FIG. 12 is a perspective view showing another example of a fixing bracket used for roofing a roof with solar cells of the present invention.

FIG. 13 is a perspective view showing another example of a fixing bracket used for roofing a roof with a solar cell according to the present invention.

FIG. 14 is a perspective view showing another example of a fixing bracket used for roofing a roof with solar cells of the present invention.

[Explanation of symbols]

1: Roof tile base material 11: Peripheral edge on the water side 12: Recess 13: Right peripheral edge (receiving portion) 11a, 13a: Nail base 11b, 13b, 34, 340, 341, 342, 34
3: Nail hole 14: Left peripheral portion (covered portion) 2: Solar cell 20: Glass plate 21: Solar cell element 22: Solar cell output cable 3, 30, 301, 302, 303, 304, 305,
306, 307: Fixtures 31, 310, 311: Legs 32, 33, 320, 330, 321, 331: Wings 300: Plates 301, 302: Cuts 4: Screws 5: Roof base material 6: Nails

Claims (1)

[Claims] 1. A roof tile with a solar cell, wherein a solar cell is disposed in a concave portion provided on a surface of the roof tile, wherein the solar cell is adjacent to the peripheral surface and side surfaces of the solar cell. A roof tile with a solar cell, wherein the roof tile is provided in the roof tile concave portion by a fixing member having a substantially T-shaped cross section in contact with the outer peripheral surface of the concave portion of the roof tile.