JP2001173162A - Solar battery module and roof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the solar battery module tile of high reliability capable of suppressing to give a bad influence to a terminal box even when rainwater enters the recessed part of the tile body housing a solar battery module. SOLUTION: A box housing recess part 25 is possessed, the recessed part 6 surrounding a circumference by the edge part of the tile body 5 is provided on the upper face of the tile body, and the solar battery module tile 3 housing in the recessed part the solar battery module 7 having the terminal box 12 housed in the housing recess part 25 is premised. A sealing material 31 adhering and sealing the whole circumferential edge of the module 7 in the recessed part 6 is continuously provided on the whole circumferential edge of the recessed part 6. A drain ditch 20 penetrating up to the outer end face of the edge part is provided to communicate with the recessed part 6. A cylinder 21 is fitted to the drain ditch 20 so that the drain ditch 20 is not blocked by the drain ditch lateral cross part 31a of the sealing material 31, and rainwater of the recessed part 6 can be drained through the cylinder 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell module tile in which a solar cell module is mounted on a tile used as a roof material of a building, and a roof covered with the tile.

[0002]

2. Description of the Related Art Some solar cell module tiles house a solar cell module in a concave portion provided on the upper surface of a tile main body. It is glued together.

That is, as described in Japanese Patent Application Laid-Open No. 11-1999, a continuous band-shaped groove is formed inside each side edge of a concave portion formed in a roof tile body for housing a solar cell module. Along with bonding the solar cell module via the elastic adhesive applied to the groove, a gap for absorbing thermal expansion is formed between each side edge and the periphery of the solar cell module, and the adhesive is A proposal has been made to prevent rainwater from entering into a void (recess) on the back surface of the solar cell module due to water tightness.

However, in this device, the entire periphery of the solar cell module is adhered to the entire periphery of the recessed portion so that rainwater does not infiltrate. No action has been taken.

[0005] In a use environment where the temperature rises due to exposure to sunlight, such as a roof, or when the environment is exposed to wind and rain, there is a possibility that the water-resistant cushioning material layer will deteriorate with long-term use. If the water-resistant buffer material layer deteriorates and cracks occur, or if the water-resistant buffer material layer is improperly mounted, rainwater that has entered the backside of the solar cell module will be output to the back of the solar cell module for output. There is a possibility that the terminal box may be provided as such, and its improvement is required to ensure long-term reliability in use.

Also, the rainwater that has entered the recess as described above spills into the terminal box and adversely affects the solar cell module. It is one of the factors that shortens the life of a sloping roof.

[0007]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is that even if rainwater enters the recessed part of the roof tile body containing the solar cell module, the rainwater can be quickly drained and the long-term use is difficult. It is an object of the present invention to obtain a solar cell module tile capable of improving the reliability of a solar cell and a high quality roof.

[0008]

The invention according to claim 1 is
A concave portion whose periphery is surrounded by the edge of the tile main body is provided on the upper surface of the tile main body, and a solar cell module tile containing a solar cell module in the concave portion is assumed.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a drain groove communicating with the concave portion and penetrating to the outer end face of the lower edge portion is provided at the lower edge portion of the tile body. Provided above is a sealing material that traverses the drainage groove and continuously adheres and seals the entire peripheral edge of the solar cell module to the concave portion along the entire peripheral edge of the concave portion, and the sealing material forms the drainage groove. A tunnel-like passage is provided between the crossing portion and the inner surface of the drain groove.

In the present invention and each of the following inventions, the photovoltaic layer of the solar cell module is made of a crystalline semiconductor layer such as single crystal, polycrystal, microcrystal, an amorphous semiconductor layer such as amorphous silicon, or a compound. Solar cell module composed of system semiconductor layer can be used,
A tandem version of each of the above modules may be used. Further, in the present invention and each of the following inventions, a silicone-based or urethane-based sealing material having an adhesive property can be used as the sealing material. The use of a sealing material is desirable in that the difference in thermal expansion between the tile body and the solar cell module can be absorbed and the sealing performance can be maintained for a long time.

According to the first aspect of the present invention, the sealing material provided in a continuous annular shape without interruption at the drain groove provided at the lower edge portion of the roof tile body is provided with the entire periphery of the recessed portion and the solar cell. Despite sealing the entire periphery of the module, a tunnel-like passage is formed between the drainage groove and the portion of the sealing material that crosses the drainage groove, so that drainage is performed by the sealing material. The groove is not closed. Therefore, even if rainwater enters the recess due to deterioration of the sealing performance of the sealing material, rainwater blowing into the drain groove, or the like, the rainwater can be discharged to the outside of the recess through the tunnel-shaped passage.

According to a second aspect of the present invention, a recess having a box housing recess and having a periphery surrounded by an edge of the tile main body is provided on the upper surface of the tile main body and housed in the box housing recess. It is assumed that a photovoltaic module tile has a photovoltaic module having a terminal box on the back face accommodated in the recess.

In order to solve the above-mentioned problem, the invention according to claim 2 is characterized in that a drain groove communicating with the concave portion and penetrating to the outer end face of the lower edge portion is provided at the lower edge portion of the tile body. Provided above is a sealing material that traverses the drainage groove and continuously adheres and seals the entire peripheral edge of the solar cell module to the concave portion along the entire peripheral edge of the concave portion, and the sealing material forms the drainage groove. A tunnel-like passage is provided between the crossing portion and the inner surface of the drain groove.

According to the second aspect of the present invention, the sealing material provided in a continuous annular shape without interruption at the drain groove provided in the lower edge portion of the roof tile body is provided on the entire peripheral edge and the back surface of the concave portion. Despite sealing between the entire periphery of the solar cell module having the terminal box, a tunnel-shaped passage is formed between the drain groove and a portion of the sealing material that crosses the drain groove. Therefore, the drain is not blocked by the sealing material. Therefore, even if rainwater enters the recess having the box housing recess due to deterioration of the sealing performance of the sealing material or blowing of rainwater into the drainage ditch, etc., the rainwater passes through the tunnel-shaped passage and passes outside the recess. Can be exhausted.

In the solar cell module tile according to the third aspect of the present invention, the passage-forming cylinders whose both ends are opened are fitted into the drain grooves, and a part of the sealing material crosses the cylinder. It is characterized by the following. In the present invention, the cylinder can be made of plastic or metal, and in particular, it is preferable to use a thin plastic cylinder such as a straw that can be obtained at low cost,
This is desirable because there is no possibility of rusting and the cross-sectional area of the passage can be as large as possible.

In the present invention, since the passage is secured by the cylinder fitted into the drain groove, the passage can be reliably drained without being blocked by the sealing material.

According to a fourth aspect of the present invention, in the solar cell module roof tile, an annular dug groove continuously surrounding the box accommodating recess and communicating with a passage of the drainage groove is formed between the peripheral edge of the concave portion and the box. It is provided between the housing recess.

According to the present invention, even if rainwater enters the recess due to deterioration of the performance of the sealing material or the like, the rainwater can be quickly guided to the passage of the drain by the annular dug groove and discharged out of the recess. Thus, it is possible to effectively prevent the infiltrated rainwater from reaching the terminal box in the box housing recess.

A roof according to a fifth aspect of the present invention is characterized by being roofed by using the solar cell module tile according to any one of the first to fourth aspects.

According to the present invention, as described above, there is an effect that rainwater that has entered the concave portion of the tile main body can be drained through the passage of the drain groove provided on the lower edge of the tile main body.
Since the solar cell module tile according to any one of (1) to (4) is used as a roof material, a high-quality roof can be provided.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a building. The roof 2 of the building 1 is provided with a large number of solar cell module tiles 3 as a roofing material that is laid in a ridge eave direction and arranged vertically and horizontally. In addition, 4 in FIG. 2 is a base plate of the roof 2, which is provided to be inclined downward from the ridge side of the roof 2 toward the eaves side.

Each of the solar cell module tiles 3 is formed of a tile main body 5 and a solar cell module 7 which is housed in a recess 6 formed on the upper surface thereof and is bonded and fixed.

As shown in FIG. 3, FIG. 5 (A), FIG. 7, and the like, the solar cell module 7 has a back surface of the module main body 11 (the front surface, which is the opposite surface, is a light incident surface). , A terminal box 1 is provided at a substantially central portion in the width direction.
2 is formed by bonding.

The module body 11 includes a transparent substrate made of glass, a plurality of amorphous silicon cells serving as semiconductor layers formed on the back surface of the substrate and connected in series with each other to generate photovoltaic power. A pair of busbars 13 as positive and negative electrodes disposed on both sides thereof and electrically connected to the cell group, and a pair of busbars 13 electrically connecting the busbars 13 with the terminal box 12. The output lines 14 and these output lines 1
4 is formed with a filler (not shown) sealed on the back side of the transparent substrate by sealing the cell and the bus bar 13 and a protective sheet (not shown) laminated on the filler. I have. An output cable 15 (see FIGS. 2 and 5) is led out from the upper side of the terminal box 12.

The cell and the bus bar 13 extend in the direction of the eaves of the roof 2 and are provided in parallel with each other. Bus bar 1
The output lead-out line 14 is connected to the module body 11 at a right angle and extends in the width direction of the module main body 11, and its tip bends to the back side of the module main body 11, penetrates the filler and the protective sheet, and passes through the terminal box 12. The inside is connected to a terminal fitting (not shown). The back surface of the module main body 11 is slightly protruding in comparison with the other back surface portions corresponding to the portion where the pair of bus bars 13 are provided.

As shown in FIGS. 3 and 4, the tile main body 5 is formed in a substantially rectangular flat plate shape by, for example, a cement tile. On both sides in the width direction of the tile body 5, overlap portions 5 a and 5 b are provided as left and right side edges which are fitted in the roof 2 with the right and left adjacent tile bodies 5 in a male-female relationship. The portion is provided with a rear rising portion 5c, and a lower edge portion of the tile body 5 is provided with a front hanging portion 5d formed to be bent downward.

As shown in FIG. 2, among the tile bodies 5 vertically adjacent to each other on the roof 2 (toward the eaves), the front hanging part 5d of the upper tile body 5 is a rear rising part 5c of the lower tile body 5.
So that it overlaps the upper surface. The tile body 5 is installed directly on the base plate 4 or through a tile base material such as a roofing (not shown). In FIG. 3, reference numeral 16 denotes a fixing hole through which a tile attachment component such as a nail or a screw passes. Is shown.

When the roof 2 is to be roofed with the photovoltaic module tiles 3 placed on the base plate 4, the photovoltaic module tiles 3 are moved from the eaves side to the ridge side in the same manner as a normal tiled work. The tile body 5 is placed on the base plate 4 and fixed to the base plate 4 through a fixing hole 16 through a nail or the like. At the same time, the rising part 5c of the tile body 5 on the eave side is overlapped.
The front hanging part 5d of the roof tile body 5 on the ridge side is superimposed on the upper side.

By repeating such operations, the roof 2 can be constituted by the solar cell module tiles 3. And
In parallel with this roofing work, the output cables 15 led out of the terminal box 12 are connected in series or in parallel to electrically connect a plurality of solar cell modules 7, and the output end obtained by the connection is used indoors. It is designed to be connected to a not-shown pull-in cable or the like to be drawn into the camera.

The rectangular recess 6 formed so as to occupy most of the upper surface of the tile main body 5 surrounds the periphery of the tile main body 5, that is, the side edges 5a and 5b which are continuous with each other. It is surrounded by the rising part 5c and the front hanging part 5d. The recess 6 is formed slightly deeper than the thickness of the solar cell module 7. One or more, for example, a pair of left and right drain grooves 20 are formed at the lower edge of the tile body 5. As shown in FIGS. 3, 4 and 6, the drain groove 20 has a configuration in which the upper surface and both ends are open, and communicates with the recessed portion 6, and is provided on the outer end surface of the lower edge of the tile body 5. The bottom surface is continuous with the bottom surface of the recess 6.

A thin-walled cylinder 21 obtained by cutting a plastic straw into an appropriate length is fitted in the drain groove 20. The inner space of the cylinder 21 is used as a passage 21 a communicating with the inside and outside of the recess 6. By providing such a drain groove 20, even if rainwater may enter the recessed portion 6, the rainwater is passed through the passage 21 a of the drain groove 20 and the outer end surface of the lower edge of the tile body 5. Can be drained onto the solar cell module roof tile 3 below.

The concave portion 6 is provided with the structure shown in FIGS. 3 to 5 and FIG. 7 for fixing the solar cell module 7 and waterproofing the terminal box 12 and the like as follows. Note that these configurations can be omitted except for a dug groove described later.

The recess 6 has an upper streak groove 22 continuous along the upper edge and upper side edges of the periphery thereof, and a lower streak groove continuous along the lower edge and the lower side edges of the periphery. The groove 23 is formed vertically apart from each other. A portion of the lower streak-like groove 23 along the lower edge portion is a drain groove 2
It is divided and discontinuous at two places where 0 crosses.

A stepped recess 24 is formed between the upper inner portion 6a surrounded by the upper streak groove 22 from three directions and the lower inner portion 6b surrounded by the lower streak groove 23 from three directions. The stepped recess 24 is provided so as to extend in the width direction of the recess 6, and the bottom surface thereof is formed in the recess 6 in the upper streak-like groove 22.
Of the groove portion 22a along the both side edges 6c of the lower streak-shaped groove 23 and the bottom surface of the groove portion 23a along the both side edges 6c of the concave portion 6 in the lower streak-like groove 23. ing. The projecting portion of the solar cell module 7 accommodated in the recess 6 by the output lead wire 14 is accommodated in the step recess 24.

At the center in the width direction of the concave portion 6, a box housing concave portion 25 extending in the vertical direction is provided with upper and lower inner portions 6a, 6b.
The stepped recess 24 is divided into two parts by the accommodation recess 25. Box storage recess 2
Numeral 5 is the lowest among the concave portions 6, and the upper part on the ridge side is located in a portion surrounded by the upper streak groove 22, in other words, in the upper inner portion 6a. 2
6 is open. The terminal box 12 of the solar cell module 7 arranged in the recess 6 is accommodated in the box accommodating recess 25, and the terminal box 12 faces upward (toward the ridge) from the box 12.
The output cable 15 led out through the electric wire through hole 26 is drawn out.

An annular digging groove 27 which is located between the periphery of the recess 6 and the box housing recess 25 and continuously surrounds the periphery of the box housing recess 25 is formed in the recess 6 so as to traverse the step recess 24 and form an upper and lower inner portion. The lower groove portion (eave-side groove portion) of the dug groove 27 is communicated with the pair of drainage grooves 20. Further, the concave portion 6 is formed with an annular groove 28 which is located inside the dug groove 27 and continuously surrounds the periphery of the concave portion 25 near the box accommodating concave portion 25.

The upper groove portion of the annular groove 28 is shared with the central portion of the upper groove portion of the dug groove 27, and these are separated by a partition 29. The provision of the partition 29 allows the rainwater to flow into the annular groove 28 near the box housing recess 25 even when rainwater is blown into the digging groove 27 through the drainage groove 20. As a result, the box housing recess This is effective in that it can be prevented from reaching the inside.

The concave portion 6 is located between the both side edges 6c and the box accommodating concave portion 25 and at the inner portion of the concave portion 6 surrounded by the digging groove 27. A groove 30 is formed. These adhesive grooves 30
Are formed to extend vertically (toward the eaves) over the upper inner portion 6 and the stepped recess 24.

The solar cell module 7 is accommodated and fixed in the recess 6 having the above-described structure as follows. That is, both upper and lower streaked grooves 22 and 23 and these groove portions 22
a, 23a, the sealing material 31 extends across both ends of the stepped recess 24 and traverses the drain grooves 20 respectively.
Are continuously and annularly filled in the drain groove 20 without interruption. In other words, the sealing material 31 is continuously filled along the entire periphery of the recess 6 without interruption. The sealing material 31 adheres the back surface of the entire periphery of the solar cell module 7 housed in the recess 6 and fills the space between the inner surface of the drain groove 20 and the outer surface of the cylinder 21 fitted in the drain groove 20. The tube 21 is bonded.

As the sealing material 31, a silicone-based sealing material that retains elasticity even after curing is used. Among them, a silicone-containing polyisobutylene-based sealing material that does not have a problem of contamination on the surface of the roof tile body 5 and the surface of the solar cell module 7 is preferably used. The cylinder 21
Is installed as follows. First, a cylinder 21 longer than the drainage groove 20 is prepared, and this cylinder 21 is fitted into the drainage groove 20 such that one end thereof is located in the eaves-side groove portion of the dug groove 27. In this fitted state, the other end of the cylinder 20 protrudes from the drain groove 20 as shown by a two-dot chain line in FIG. Next, the sealing material 31 is applied along the entire periphery of the recess 6 by an automatic machine or manually. In this case, since the width of the sealing material 31 corresponds to the width of the stripe grooves 22 and 23, the sealing material 31 crosses a part of the open upper surface of the drain groove 20. Finally, with the solar cell module 7 housed in the recess 6 after the application of the adhesive described later, with or without waiting for the sealing material 31 to hold its shape, the two-dot chain line is used. Cut off the indicated part with a cutter. That is, the cylinder 21 is attached to the drain 20 by the above procedure.

As described above, since the sealing material 31 can be continuously and annularly applied without interruption, there is no need to interrupt the application of the sealing material 31 at the drain groove 20. Therefore, the sealing material 31 can be applied without fail in a short time, and the application workability is good.

Each of the adhesive grooves 30 has an adhesive 3
2 are filled, and the recesses 6
At a plurality of locations on the back surface of the solar cell module 7 housed in the solar cell module 7. The adhesive performance of the adhesive 32 is the sealing material 31.
The adhesive 32 may be harder in the bonded state after the start of use, but in this embodiment, an epoxy-based adhesive that maintains elasticity in the bonded state after the start of use is used.

As described above, the sealing material 31 and the adhesive 3
By using 2 together, the solar cell module 7 housed and bonded in the recess 6 can be firmly and stably held in a state.

In addition, in the bonding with the sealing material 31 and the adhesive 32, the rear surface portion which covers the output line 14 of the solar cell module 7 and protrudes slightly is accommodated in the stepped recess 24 of the concave portion 6. The solar cell module 7 does not assume a slightly inclined posture with the projecting point as a fulcrum, and the flat back surface of the solar cell module 7 is brought into contact with the flat surfaces of the upper and lower inner portions 6a and 6b, respectively. It can be accommodated in the recess 6 while being supported in an appropriate posture and bonded. Therefore, the degree of contact with the sealing material 31 and the adhesive 32 tends to be uniform at each portion, and therefore, the sealing material 3 on the entire periphery of the recess 6 is formed.
1, the desired sealing performance and adhesion can be exhibited, and the desired adhesion by the adhesive 32 on the back surface of the solar cell module 7 can be exhibited.

According to the solar cell module roof tile 3 having the above-described structure, the sealing material 31 normally provided continuously and annularly without interruption over the four peripheral back surfaces of the solar cell module 7 causes the concave portion of the roof main body 5 to be recessed. No rainwater enters the part 6.

However, when the sealing work is inadequate or the sealing material 31 is deteriorated, it is conceivable that rainwater may enter the recess 6. However, even in such a situation, the rainwater in the concave portion 6 can be drained from the outer end surface of the lower edge of the tile body 5 toward the eaves through the drain groove 20 as described below.

In this case, since the drain groove 20 is provided so as to communicate the outer end face of the lower edge portion of the tile main body 5 and the recess 6 without penetrating the tile main body 5 in the thickness direction, Even if dust is clogged between the tile bodies 5 vertically adjacent to each other, they can be smoothly drained through the passage 21a of the drain groove 20 located above that portion.

In addition, as described above, the sealing material 31 provided in the drain groove 20 in a continuous annular shape without interruption provides a space between the entire periphery of the recess 6 and the entire periphery of the solar cell module 7. , The drain groove 20 has a positional relationship to intersect the eaves-side portion of the sealing material 31. Nevertheless, since the cylinder 21 is fitted into the drain groove 20, the sealing material 31 has a tunnel-like shape that is not blocked by the sealing material 31 between the sealing member 31 and the transverse portion 31a crossing the drain groove 20. The passage 21 a is secured by the cylinder 21.

Therefore, as described above, the sealing material 31 is used.
Even if rainwater enters the recessed portion 6 due to deterioration of sealing performance or rainwater blowing into the drain groove 20, the rainwater can be surely discharged out of the recessed portion 6 through the tunnel-shaped passage 21a. Therefore, with such drainage performance, it is possible to prevent rainwater that has entered the recessed portion 6 from flowing toward the terminal box 12.

In addition, in this drainage, there is a digging groove 27 continuously surrounding the box accommodating recess 25 in the recess 6, and this groove 27 is provided in each drainage groove 20.
The rainwater that enters the recess 6 and moves in the direction of the terminal box 12 can be caught by the digging groove 27 and quickly guided downward along the inclination direction of the roof 2. Thus, the rainwater flowing down the digging groove 27 can be easily drained from the drainage groove 20 to the outside of the concave portion 6. Also in this regard, the rainwater that has penetrated into the recesses 6 causes the terminal box 1
It can be prevented from wrapping around in two directions.

Further, the adhesive 32 which mainly fixes the solar cell module 7 to the recess 6 extends vertically between the side edges 6c of the recess 6 and the box accommodating recess 25, for example, a straight line. These adhesives 32 can be used as a waterproof embankment because they are arranged in a shape. Therefore, it is possible to prevent rainwater that has entered from the both side edges 6 c of the recess 6 from reaching the box housing recess 25. Also in this regard, it is possible to prevent rainwater that has entered the recess 6 from flowing in the direction of the terminal box 12.

Further, since each adhesive 32 is provided in the inner portion surrounded by the digging groove 27, the action of the above-mentioned digging groove 27 to quickly draw out the rainwater to the drainage groove 20 causes the inside of each bonding groove 30. The adhesive 32 can be prevented from being exposed to the infiltrated rainwater. Therefore, deterioration of the adhesive 32 is suppressed, and stable adhesive performance can be maintained for a long period of time.

Therefore, by the above-described waterproofing action at each part and the draining action from the drain groove 20, the rainwater that has entered the recessed portion 6 can be prevented from sneaking in the terminal box 12 direction. It is possible to prevent the possibility of a short circuit or a short circuit.

In the present invention, in order to form a tunnel-like passage 21a between the drain groove crossing portion 31a of the sealing material 31 and the drain groove 20, the cylinder 21 must be connected to the drain groove 20a.
The following method may be adopted in place of leaving the inside. That is, first, a spacer shaft composed of a cylinder or a shaft longer than the drainage groove 20 is prepared, and the outer periphery of one end of the shaft is coated with gelling and jelly-like oil.
After the fitting, the sealing material 31 is applied along the entire periphery of the recessed portion 6 by an automatic machine or manually. After that, in a state where the solar cell module 7 is accommodated in the recessed portion 6, the sealing material 31 is removed. After holding the shape, the spacer shaft is pulled out, so that a tunnel-like passage 21a corresponding to the shape of the shaft is formed in the sealing material 3.
It can be formed between one drain groove crossing portion 31a and the drain groove 20.

[0056]

According to the first aspect of the present invention, since the drainage groove provided at the lower edge of the roof tile body is not closed by the sealing material, even if rainwater enters the recess, the rainwater is not removed. Can be discharged through the tunnel-like passage between the drainage ditch and the sealing material to the outside of the recess, so that the adverse effect of rainwater that has entered the recess can be suppressed, and the solar cell has high reliability in long-term use. We can provide modular roof tiles.

According to the second aspect of the present invention, since the drainage groove provided at the lower edge of the tile body is not closed by the sealing material, even if rainwater enters the recess, the rainwater is drained. It can be drained out of the recess through the tunnel-like passage between the groove and the sealing material, so that it is possible to suppress the adverse effect on the terminal box due to rainwater that has entered the recess and has high reliability in long-term use. We can provide solar cell module tiles.

According to the third aspect of the present invention, since the tunnel-shaped passage is secured by the cylinder fitted into the drainage groove, the passage of the drainage groove is not blocked by the sealing material. It is possible to provide a solar cell module roof tile capable of reliably obtaining the effects of the second invention.

According to the fourth aspect of the present invention, in addition to the effect of any one of the first to third aspects, the annular dug groove provided in the concave portion in communication with the tunnel-like passage has Since the rainwater that has entered from the periphery of the portion can be quickly discharged from the drain, a solar cell module tile with high reliability over a long period of use can be provided.

According to the fifth aspect of the present invention, as described above, the rainwater that has entered the recess can be drained through the passage of the drain groove provided at the lower edge of the tile body. Since the solar cell module tile of item 1 is used as a roof material, a high-quality roof can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a building having a roof covered with solar cell module tiles according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a part of the roof of the building of FIG. 1;

FIG. 3 is an exploded perspective view showing a solar cell module tile according to one embodiment.

FIG. 4A is a plan view showing a tile body provided in a solar cell module tile according to one embodiment. (B) is a front view of the tile main body viewed from the arrow Z direction in FIG. 4 (A).

FIG. 5A is a cross-sectional view showing a cross section of a solar cell module tile according to an embodiment at a portion passing through line YY in FIG. 4A. FIG. 5B is an enlarged cross-sectional view showing a portion X in FIG.

FIG. 6A is an enlarged sectional view showing a drain groove portion of the solar cell module tile according to one embodiment. (B) is a front view showing the drain groove portion in a state before the solar cell module is mounted. (C) is a top view which shows the drain groove part in the state before a solar cell module is mounted.

FIG. 7 is a cross-sectional view showing a solar cell module roof tile according to one embodiment at a portion passing through line VV in FIG. 4 (A).

[Explanation of symbols]

 2 roof 3 solar cell module tile 5 tile body 5a, 5b overlap part (side edge part of tile body) 5c rear rising part (upper edge part of tile body) 5d front hanging part (below tile body) 6) Depressed portion 7 ... Solar cell module 11 ... Module main body 12 ... Terminal box 20 ... Drain groove 21 ... Tube 21a ... Passage 25 ... Box accommodating recess 27 ... Dig groove 31 ... Sealing material 31a ... Drain groove for sealing material Crossing

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E108 KK04 LL01 MM00 NN07 5F051 AA05 BA03 BA18 GA03

Claims (5)

[Claims] 1. A solar cell module tile in which a concave portion whose periphery is surrounded by an edge portion of a tile main body is provided on an upper surface of the tile main body, and a solar cell module is housed in the concave portion. At least one drainage groove communicating with the concave portion and penetrating to the outer end surface of the lower edge portion is provided, and the drainage groove is traversed and continuously along the entire peripheral edge of the concave portion. A sealing material for bonding and sealing the entire periphery to the recess is provided, and a tunnel-like passage is provided between a portion where the sealing material crosses the drain groove and an inner surface of the drain groove. Solar cell module tile. 2. A recess having a box housing recess and having a recess surrounded by an edge of the tile body on an upper surface of the tile body, and a terminal box housed in the box housing recess on a back surface. In the solar cell module tile accommodating the formed solar cell module in the concave portion, at least one drain groove communicating with the concave portion and penetrating to an outer end surface of the lower edge portion is provided in a lower edge portion of the tile main body. A sealing material is provided that traverses the drainage groove and continuously adheres and seals the entire peripheral edge of the solar cell module to the recessed portion along the entire peripheral edge of the concave portion, and the sealing material traverses the drainage groove. A solar cell module roof tile, wherein a tunnel-like passage is provided between a portion where the drain groove is located and an inner surface of the drain groove. 3. The passage forming cylinder having both open ends at the both ends thereof is fitted into the drain groove, and a part of the sealing material traverses the cylinder.
Or the solar cell module roof tile according to 2. 4. An annular digging groove which continuously surrounds the periphery of the box accommodating recess and communicates with the passage of the drainage groove is provided between the periphery of the recess and the box accommodating recess. The solar cell module tile according to any one of claims 1 to 3. 5. A roof which is roofed by using the solar cell module tile according to claim 1.