JP2003003612A - Tile incorporated with solar cell - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for fittings such as a metallic fitting, to form a solar-cell falling-preventive structure by a strong wind or the like, to install an easily wired output cable and further to improve appearance and rainwater resistance. SOLUTION: A solar-cell housing recessed section 3 capable of housing the whole of solar cell units 2 having quadrilateral plate surfaces is formed to the surface of a tile body 1 while an engaging section 4 composed of small projecting sections 42, to which engaging recessed sections 41 capable of engaging the lower sides of the housed solar cell units 2 so that the lower sides are inserted and are not slipped off are formed, is molded integrally and formed to the lower edge section 31 or side edge section 32 of the recessed section 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof tile incorporating a solar cell, and more particularly to improvement of a solar cell unit incorporating structure and an output cable lead-out structure.

[0002]

2. Description of the Related Art A technique of incorporating a solar cell into a clay roof tile, which has been widely used as a roofing material, and converting the energy of sunlight into electric energy for use, has attracted attention.
In this case, a solar cell unit in which a large number of solar cell elements are assembled in a flat plate is applied, and an integrated roof tile in which this solar cell unit is incorporated into a roof tile body has been developed.

The solar cell referred to here is one for converting light energy into electric energy by irradiating an np junction thin layer of a semiconductor such as amorphous silicon with sunlight, and outputs from electrodes on the front and back of the element. Can be taken out. With the solar cell unit in the present invention, a large number of such elements are arranged in parallel, the front and back surfaces thereof are protected by a glass plate or a plastic plate, and the output cable can be pulled out from an appropriate position. A plate-shaped body. For example, length x width x thickness: 280 x 430 x 5
mm-sized units are being put to practical use.

The structure in which such a solar cell unit is incorporated into the roof tile body is disclosed in Japanese Utility Model Laid-Open No. 61-194039, Japanese Utility Model Laid-Open No. 4-28524, Japanese Patent Laid-Open No. 11-6255, Japanese Patent Laid-Open No. 2000-226909. Has been proposed to.

An example thereof is shown in FIG. 5, in which a recess 12 into which a solar cell unit 13 can be fitted is provided on the surface 11 of the roof tile body 1, and the solar cell unit 13 is attached to the recess 12 with an adhesive. It is fitted, the gaps on the four sides are sealed with a caulking material, and the surface is covered and protected by a transparent protective plate 14 such as glass or transparent plastic.

However, such an adhesive or caulking material is exposed to wind and rain, snow dew, sunlight, or a large temperature change in the outdoors such as a roof, and the material is easily deteriorated to easily crack or peel. There was a drawback. For this reason, there is a possibility that rainwater may infiltrate to decompose the solar cells or stain the solar cells, or the solar cells may drop off due to strong wind.

[0007]

The present applicant has already proposed a technique for solving the above problems in Japanese Patent Application No. 2001-3245.
Although the present invention has been filed as No. 6, it is a further improvement of the present invention. When disposing the solar cell unit on the surface of the roof tile body, there is no need for metal fittings such as metal fittings, and the solar cell is resistant to strong winds. (EN) Provided is a roof tile having a built-in structure that does not drop, in which an output cable is easily routed, and a solar cell having improved appearance and rainwater resistance is incorporated.

[0008]

Means for Solving the Problems The above problem is a roof tile incorporating a solar cell unit, in which a recess for accommodating the solar cell unit is formed on the surface of the roof tile body, and the lower edge of the recess is formed. Alternatively, it can be solved by a roof tile incorporating the solar cell of the present invention, in which a locking portion for locking the housed solar cell unit is formed integrally with the roof tile body at the side edge portion.

According to the present invention, the solar cell unit has an output terminal box attached to the upper rear surface thereof, and the output cable connected to the output terminal box is led out from the bottom end of the roof tile body. It is preferably embodied as a roof tile incorporating the above-mentioned solar cell in a form or in a form in which a cover panel is attached to cover the upper edge portion of the solar cell unit and the roof tile bottom portion subsequent thereto.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a roof tile incorporating the solar cell of the present invention will be described with reference to FIGS. First, the roof tile main body 1 of the tile incorporating the solar cell of the present invention is usually applied to a flat plate type roof tile in which a solar cell unit made of a flat plate is easily incorporated. However, it can also be applied to non-fired hardening type roof tiles such as cement.

The roof tile incorporating the solar cell of the present invention is characterized in that a solar cell housing concave portion 3 capable of housing the entire solar cell unit 2 having a rectangular flat plate surface is formed on the surface of the roof tile body 1. The lower edge portion 31 or the side edge portion 32 of the concave portion 3 is integrally formed with the roof tile body 1 by a locking portion 4 that locks the stored solar cell unit 2 so as not to drop. In the text, the directions of up, down, left, and right are expressed in a state in which the roof tiled roof is viewed from below. That is, the head direction is downward and the hip direction is upward.

In FIG. 2 showing the roof tile body 1, a pair of the engaging portions 4 are provided on the lower edge portion 31 of the solar cell accommodating recessed portion 3, but are arranged on both side edge portions 32, 32 respectively. May be. Further, the locking portion 4 is formed integrally with the roof tile body 1, and is composed of a small convex portion 42 provided with a locking concave portion 41 that can be locked so that the lower side of the solar cell unit 2 is not inserted and falls. It is a thing.

On the bottom surface of the solar cell accommodating concave portion 3, an appropriate number of supporting convex portions 3 for supporting the back surface of the solar cell unit 2 are provided.
3 is arranged to create a space in which rainwater that has entered the back side of the solar cell unit 2 flows down, and as shown in FIG. 2, these rainwater can be collected and discharged to the outside in the lower part of the recess 3. As described above, the inclined water guiding portions 34, 34 and the drainage grooves 35, 35 following the inclined water guiding portions 34, 34 are formed.

The output terminal box 2 of the solar cell unit to be housed is provided above the solar cell housing recess 3.
A second recess 5 that can accommodate 1 is formed. The output terminal box 21 is a portion to which the output cables 21a and 21b are connected. The depth and the vertical and horizontal sizes of the second recess 5 are set according to the shape of the output terminal box 21, but the second recess The upper part of 5 is connected to the output cable housing recessed grooves 52a, 53a formed toward both ends of the bottom of the roof tile body 1. And this output cable housing concave groove 52
One of a and 53a is connected to the left outlet 52 provided on the left side of the hip, and the other is connected to the right outlet 53 provided on the right side of the hip. In the example of FIG. 2, the roof tile fixing nail holes 61 are provided at three locations in the ridges along the output cable housing recessed grooves 52a and 53a.

If the roof tile main body 1 having the structure of the present invention described above is used, as shown in FIG. 3, if the solar cell unit 2 is fitted into the solar cell housing concave portion 3 of the roof tile main body 1 and stored, the locking is achieved. Since the portion 4 locks the lower end portion of the solar cell unit 2, a mounting metal fitting such as a metal fitting is not required, and the solar cell unit does not come off and drop even in strong winds, etc., to realize an assembly structure. You can Further, the rainwater that has entered the back side of the solar cell unit 2 flows down through the space between the bottom surface of the concave portion 3 and is discharged to the outside from the drainage slots 35, 35, so that the inconvenience of staying inside is eliminated.

Further, by incorporating the solar cell unit 2 having the output terminal box 21 in the upper part of the rear surface as described above,
Since the output cables 21a, 21b can be led out from the left outlet 52 and the right outlet 53 on the left and right of the bottom end of the roof tile body 1 through the output cable housing recesses 52a, 53a, they are arranged on the left and right. It is possible to obtain an advantage that wiring between the roof tile (not shown) and the solar cell unit becomes extremely easy.

Next, a more preferred embodiment will be described with reference to FIGS. 1 and 4, which is the solar cell unit 2.
The cover panel 7 is attached to cover the entire upper edge portion of the roof tile and the portion of the roof tile bottom portion of the roof tile body 1 that follows. That is,
The cover panel 7 is a horizontally long plate member that covers the entire roof tile portion (excluding the underlap portion) of the roof tile body 1.
It will be attached so as to cover the position where the tip end portion of the roof tile that is roofed on the upper side abuts. It should be noted that the cover panel 7 is provided with a nail hole 71 at a position corresponding to the tile-fixing hole 61 on the roof tile side so that the cover panel 7 and the roof tile body 1 are integrally fixed to each other during roofing. To be done.

The panel cover 7 is made of a bent steel plate such as a painted steel plate having a thickness of about 0.3 mm, a synthetic resin lining steel plate, a stainless steel plate, an electrolytically colored aluminum extruded panel, or a synthetic plate having a thickness of about 1 mm. It is composed of resin panels. In a preferred form, a long groove 72 is formed along the longitudinal direction at a portion of the cover panel 7 with which the head tip portion of the upper roof tile comes into contact when the roof tile is roofed. Formed (Fig. 4
(See A and B).

By using this panel cover 7,
As shown in FIG. 1, the front edge portion 73 presses the entire upper edge portion of the solar cell unit 2, so that the solar cell unit 2 can be attached more reliably. Further, the cover panel 7 is provided with the output cable housing recessed grooves 52a, 53a.
Since the bottom side of the roof tile body 1 including the roof is widely covered, rainwater does not easily enter, and the output terminal box 21 and the output cable 2 inside
Rain water resistance is improved, such as protection of 1a and 21b.
Further, by providing the long groove 72, a slight irregularity between the upper and lower roof tiles when the roof tile is roofed is absorbed by the long groove 72 to be inconspicuous, and the structural strength is improved. can get.

[0020]

Since the roof tile incorporating the solar cell of the present invention is constructed as described above, when mounting the solar cell unit on the surface of the roof tile body, no metal fittings such as metal fittings are required. , The solar cell unit will not fall due to strong wind. In addition, it has an excellent effect that the rainwater resistance is significantly improved by the cover plate having an output cable lead-out structure that is easy to wire and excellent in appearance and strength. Therefore, the present invention has extremely great industrial value as a roof tile incorporating a solar cell that solves the conventional problems.

[Brief description of drawings]

FIG. 1 is a plan view (A), a BB sectional view (B), and a CC sectional view (C) for explaining an embodiment of the present invention.

FIG. 2 is a plan view (A), a BB sectional view (B), a CC sectional view (C), and a D of the roof tile body before the solar cell unit is incorporated.
-D sectional drawing (D).

FIG. 3 is a plan view (A), a BB cross-sectional view (B), a CC cross-sectional view (C), and a D-D cross-sectional view (D) of the roof tile body before the cover panel is attached, in which the solar cell unit is incorporated. .

FIG. 4 is a plan view (A) and a sectional view (B) of a cover panel of the present invention.

FIG. 5 is a developed perspective view showing a roof tile incorporating a conventional solar cell.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 roof tile main body, 2 solar cell unit, 21 output terminal box, 21a, 21b output cable, 3 solar cell accommodation recessed part, 31 lower edge part, 32 side edge part, 33 convex part, 34
Inclined water guiding part, 35 drainage port, 4 locking part, 41 locking concave part, 42 small convex part, 5 second concave part, 52a output cable housing groove, 53a output cable housing groove, 52
Left outlet, 53 Right outlet, 61 Roof tile fixing hole.

Claims (4)

[Claims] 1. A roof tile incorporating a solar cell unit, wherein a concave portion capable of accommodating the solar cell unit is formed on the surface of the roof tile body, and the accommodated sun is provided at a lower edge portion or a side edge portion of the concave portion. A roof tile incorporating a solar cell, wherein a locking portion for locking the battery unit is integrally formed with the roof tile body. 2. The solar cell unit according to claim 1, wherein an output terminal box is attached to an upper portion of a rear surface of the solar cell unit, and an output cable connected to the output terminal box is led out from a bottom end portion of the roof tile body. A roof tile incorporating the described solar cell. 3. A roof tile incorporating a solar cell according to claim 1, wherein a cover panel is attached to cover an upper edge portion of the solar cell unit and a roof tile bottom portion that follows the upper edge portion. 4. A groove is formed in the cover panel in a longitudinal direction at a position where a tip end portion of a roof tile that is roofed when the roof tile is roofed is in contact with the roof panel. Roof tiles that incorporate solar cells.