JPH05239896A - Roof with solar battery - Google Patents

Abstract

PURPOSE:To prevent the decline of energy conversion efficiency caused by intense heat of a solar battery in a roof with the solar battery, to obtain always stabilized power supply and, at the same time, to make it hard to have an influen-of wind and rain on wiring of wires of the solar battery and to enable the indoor wiring. CONSTITUTION:Solar battery modules 4 are stuck on a roof panel body 3 through a spacer 18, and roof panels forming gas permeable layers 5 between the roof panel body 3 and the solar battery modules 4 are so arranged that the gas permeable layers 5 are extended along a slope to a ridge section 20 from an eaves section 19 and are mounted to a ridge beam 21 and roof beams 23 and 24. Wires 31 of the solar battery modules 4 are wired to the inside of a house (J) from the ridge section 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof of a house or the like to which a solar cell is attached.

[0002]

2. Description of the Related Art Conventionally, a solar cell is installed on the roof of a building structure such as a house, and electric power is supplied from the solar cell to the house to save energy. When installing a solar cell on the roof, a fixed frame type in which the panel-shaped solar cell unit provided with the solar cell is fixed by a dedicated stand on the existing roof, or a so-called The roof panels are used as roof tiles for solar cells.

[0003]

By the way, although the solar cell generates electricity by sunlight, if the solar cell itself is excessively heated, the energy conversion efficiency tends to decrease. In the case of a fixed pedestal type or a solar cell roof tile, it is necessary to provide a means for preventing heat from escaping (dissipating heat) to prevent a decrease in energy conversion efficiency.

Further, in the case of the fixed base type, the wiring of the electric wire of the solar cell is exposed to the outside, which is easily affected by direct wind and rain and sunlight, and has a problem of durability. Routing the wiring indoors is troublesome because it has to go up to the roof.

Further, in the solar cell roof tile, a connector for energization is provided at the joint portion between the roof tiles, but there is a problem that this connector is easily corroded by rainwater entering.

The present invention has been made in view of the above circumstances, and it is possible to prevent a decrease in energy conversion efficiency due to high heat generation and always obtain a stable power supply. Less susceptible to light,
Moreover, it is an object of the present invention to provide a roof panel with a solar cell, which is configured to be easily handled indoors.

[0007]

The present invention has been made in order to achieve the above object, and a roof with a solar cell for a house or the like in which a plurality of roof panels with a solar cell are arranged and fixed to a beam. In the above, the roof panel, a panel-shaped solar cell unit provided with solar cells is attached to the roof panel body, and a ventilation layer extending in one direction is formed between the roof panel body and the solar cell unit. The roof panel is fixed to the beam with the ventilation layer extending from the eaves portion toward the ridge portion along the slope thereof, and the electric wire of the solar cell is passed from the ridge portion through the ventilation layer. It is characterized by wiring inside the house.

[0008]

According to the roof panel with a solar cell of the present invention, the air flow passing through the ventilation layer of the roof panel becomes an ascending air current from the eaves to the ridge, which promotes the heat dissipation of the solar cell unit. The temperature rise is suppressed, and as a result, the energy conversion efficiency of the solar cell unit is constantly maintained high, and stable power supply can be achieved.

Further, since the electric wire of the solar cell unit is wired in the ventilation layer and protected by the solar cell unit and not exposed to the outside, it is not directly affected by wind and rain.

Further, since the electric wires of the solar cell unit wired in the ventilation layer are wired in the house from the ridge,
If the wires are connected and pulled out to the ridge side when assembling the roof panel, it can be pulled out from the ventilation layer to the ridge side and wired indoors during construction, which allows wiring on the roof. There is no need to perform any work, and it becomes easy to handle indoor wiring.

Further, since the electric wires of the solar cell module are wired in the ventilation layer and protected by the solar cell module and are not exposed to the outside, they are not easily affected by wind and rain or sunlight.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a roof 2 in which a plurality of roof panels with solar cells (hereinafter abbreviated as roof panels) 1 of the embodiment are used.
2 shows the roof part of the house J, in which the roof panels 1 form the entire roof 2A facing the south.

The roof panel 1 is integrally formed from the eaves end J1 of the house J to the ridge J2, and a plurality of panel-shaped solar cell modules 4 provided with solar cells are attached to the roof panel body 3. And the eaves section J1 between the two
It has a basic structure in which the ventilation layer 5 is formed so as to communicate from the building to the ridge J2.

As shown in FIGS. 2 and 3, the roof panel body 3 has a roof panel body 3A stretched on the ridge J2 side of the roof 2 and a roof panel body 3B stretched on the eaves side J1 side.
Are joined together. All of them are rectangular and have the same width, but the length of the roof panel body 3B is set longer.

The roof panel body 3 (3A, 3B) has a plurality of vertical core members 8 and horizontal core members 9 fixed to the lower surface of a rectangular plywood 7 having an asphalt roofing 6 on the upper surface. The vertical core member 8 is fixed to both edges and the center of the plywood 7 along the length direction. Further, the horizontal core material 9a is fixed to both edge portions of the plywood 7 along the width direction thereof.
There are two types of horizontal core members 9b (two in this case) fixed to the plywood 7 along the width direction of the plywood 7 between them. The horizontal core members 9 are arranged at equal intervals. The vertical core member 8 and the horizontal core member 9 are fixed to the plywood 7 with an adhesive and nailing.

On the other hand, in the solar cell module 4, as shown in FIG. 4, a solar cell (not shown) is built in a rectangular transparent plate 10, and a plurality of transparent plates 10 are provided by a seal joint 11 (in this case, 6 It is a panel that is assembled in a rectangular shape. The solar cell is an energy converter using a PN junction, and is, for example, N-type Si.
A P-type layer having a thickness of 1 to 3 μm is formed on the substrate so that light reaches the PN junction from the surface, and the one utilizing the photovoltaic effect is used.

The solar cell module 4 has the same width as the roof panel bodies 3A and 3B, and the length direction of the solar cell module 4 is aligned with that of the roof panel bodies 3A and 3B. A plurality of (five in this case) affixed in the closed state.

As shown in FIG. 5, the seal joint 11 has an elastic member 13 such as butyl rubber for sealing the joint end of the transparent plate 10, a packing 14 provided between the elastic members 13, and the elastic members 13. A cushion 15 that holds the member 13 and the packing 14 and a joint piece 16 that holds the cushion 15 are provided. By fixing the upper joint piece 16 and the packing 14 with a screw 17, Board 10.1
0 joins each other. In addition, this seal joint 11
Is configured to stop the water between the transparent plates 10 by the elastic member 13 and the like.

On the upper surface of each roof panel body 3A, 3B, a prism 18 is fixed by an adhesive or the like at both edges along the length direction and at the center between the edges. .. These spacers 18 are the roof panel body 3A,
3B extending along the length direction of these spacers 1
The joint piece 16 on the lower side of the seal joint 11 is fixed on the upper surface of the solar cell module 4 with an adhesive or the like.
It is attached to the upper surface of B). Then, as shown in FIG. 2 and the like, the presence of the spacers 18 causes a gap of the thickness of the spacers 18 between the upper surface of the roof panel body 3 (3A, 3B) and the lower surface of each solar cell module 4. Is formed, and this void extends in the length direction of the roof panel 1 to form the ventilation layer 5 extending from the eaves tip portion J1 to the ridge portion J2.

A plurality of panel-shaped solar cell modules 4 provided with solar cells are attached to the roof panel main body 3 (3A, 3B), and the ventilation layer 5 is formed between the two, thus forming the above-mentioned embodiment. As shown in FIG. 1, the roof panel 1 has the solar cell module 4 facing upward and the roof panel body 3A with the ridge J.
The roof panel main body 3B is fixed to the ridge beam 21, the roof beam 23 at the upper end of the outer wall panel 22, and the roof beam 24 between them in a state where the roof panel body 3B is arranged on the eaves portion J1 side on the second side.

More specifically, the lengthwise ends of each of the vertical core members 8 of the roof panel body 3A have a master beam 21 and a roof beam 24.
Ridge portion J of each vertical core member 8 of the roof panel body 3B fixed to
The end on the 2 side is the roof beam 24, and the eaves portion J of each vertical core member 8
The one side is fixed to the roof beam 23, respectively. Adhesion of each vertical core member 8 is made with an adhesive or the like.

Then, a plurality of roof panels 1 are arranged in close contact with each other in the lateral direction to form a roof 2A.
The adjacent roof panels 1 are joined to each other by joining the solar cell modules 4 (the transparent plates 10 thereof) to each other by the seal joint 11.

As shown in FIG. 3, the eaves tip portion J1 is provided with an eaves tip metal piece 25 having an L-shaped cross section and a nasal concealment 26, respectively.
8a and gable 28b are attached, respectively.
In addition, the eaves portion J1 between the eaves hardware 25 and the gable 28b.
A louver 40 having a large number of small holes 40a as shown in FIG. 6 is attached to the opening over the entire length of the air vent to prevent invasion of wind and rain into the ventilation layer 5.

The roof panel 1 constitutes a roof 2A facing the south of the house J, and the roof 2B on the opposite side is formed on the roof panel body 3 (3A, 3B) with a core material 41 interposed therebetween. The roofing material 42 is stretched and configured.

As shown in FIG. 7, the ridge portion J2 of the house J has a structure in which a pair of left and right connecting purlins 29, 29 are sandwiched between upper roof panel main bodies 3A constituting the roofs 2A, 2B. The metal fittings 30 are fixed and fixed from the roof 2A to the roof 2B. The spacer 18 on the roof 2A side
And the core member 41 on the side of the roof 2B is a connecting purlin 29, 29.
Of the spacer 18 and the core material 41.
Is an angle 43 with a U-shaped cross section that extends in the length direction of the ridge.
Are fixed, and an angle 44 is fixed to the metal fitting 30. In addition, a plurality of ventilation holes 45 are formed in the side portion 30a of the metal building 30 in the longitudinal direction of the metal building 30 at intervals.

In the state where the roof 2A is constructed as described above, the ventilation layer 5 is extended by the spacers 18 from the eaves portion J1 toward the ridge portion J2 along the slope thereof, and these extend in the lateral direction. Many are lined up. These ventilation layers 5 are open to the outside through the gallery 40 on the side of the eaves J1, and open to the outside through the ventilation holes 45 on the side of the ridge J2 through the inside of the metal structure 30.

Now, in each of the above solar cell modules 4, as shown in FIG. 4, the different polarities of the adjacent solar cells are between the respective roof panel bodies 3 (3A, 3B) and the respective solar cell modules 4. The electric wire 31 is connected through the ventilation layer 5, and finally the electric wire 31 is routed to the side of the ridge J2, and is provided in the house J through the roof panel body 3A and the left side joint purlin 29 and the main beam 21. The charging means (not shown) is connected to the charging means, and indoor wiring is provided from the charging means to supply electric power.

According to the roof panel 1 of this embodiment having the above structure, the roof panel body 3 (3A, 3B) and the solar cell module 4 attached to the upper surface of the roof panel body 3 (3A, 3B). Since the ventilation layer 5 is formed between
The heat of the solar cell module 4 is dissipated and the temperature rise is suppressed. Moreover, the ventilation layer 5 extends from the eaves portion J1 to the ridge portion J2.
Since it extends toward the ridge and along the gradient, an ascending air current is generated in the ventilation layer 5 from the eaves portion J1 to the ridge J2, and the air flow passes through the inside of the ridge hardware 30 to the outside of the ventilation hole 45. To get out. That is, the flow of air in the ventilation layer 5 is more active due to the rising air current, and therefore, the suppressing effect of the temperature rise of the solar cell module 4 is further promoted.
As a result, the energy conversion efficiency of the solar cell module 4 is always maintained high, and stable power supply can be achieved.

Further, the electric wire 31 of each solar cell module 4
Is wired to the ventilation layer 5, is protected by each solar cell module 4 and is not exposed to the outside, and thus is less likely to be directly affected by wind and rain or sunlight.

Further, the ventilation layer 5 extends from the eaves portion J1 to the ridge J.
Since the solar cell electric wires 31 are connected to each other when the roof panel 1 is assembled, the ridge J
If you pull it out to the 2 side, it will be possible to install it from the ventilation layer 5 to the ridge J during construction.
It can be pulled out to the 2 side and wired indoors, which eliminates the need for wiring the solar cell on the roof and saves construction work.

In the above embodiment, only the roof on the south side is constructed with the solar cell-equipped roof panel 1. However, both north and south sides may be constructed with the solar cell-equipped roof panel 1, of course.

[0032]

As is apparent from the above description, according to the roof panel with a solar cell of the present invention, the roof panel with a solar cell in which a plurality of roof panels with solar cells are arranged and fixed to a beam is The roof panel, the roof panel main body, a panel-shaped solar cell unit provided with solar cells is affixed, between the roof panel main body and the solar cell unit, a ventilation layer extending in one direction is formed, This roof panel is fixed to the beam with the ventilation layer extending from the eaves portion toward the ridge portion along the slope thereof, and the electric wire of the solar cell is passed from the ridge portion into the house through the ventilation layer. It is characterized by wiring, and the air flow through the ventilation layer of the roof panel becomes an ascending air current from the eaves to the ridge, which promotes heat dissipation of the solar cell unit and suppresses temperature rise. As a result, the energy conversion efficiency of the solar cell unit is always maintained at a high level, a stable power supply can be achieved, and the electric wires of the solar cell unit are protected by the solar cell unit and are not exposed to the outside, making it less susceptible to direct wind and rain. In addition, the wires are wired from the ridge, which is the upper end of the center of the house, to the inside of the house, so if the wires are connected and pulled out to the ridge side when assembling the roof panel, it will be ventilated during construction. It can be pulled out from the layer to the ridge side and wired indoors.
It has various effects such as easy handling of indoor wiring.

[Brief description of drawings]

FIG. 1 is a perspective view of a roof of a house to which a roof panel with a solar cell according to an embodiment of the present invention is applied.

FIG. 2 is a side sectional view of a roof.

FIG. 3 is a cross-sectional view taken along the line PP of FIG.

FIG. 4 is a perspective view of a roof panel with a solar cell according to an embodiment.

FIG. 5 is a cross-sectional view of a connecting member of the solar cell module.

FIG. 6 is an enlarged side view of an eaves tip portion.

FIG. 7 is a sectional view of a ridge.

[Explanation of symbols]

 1 Roof panel with solar cell 2 (2A) Roof 3 (3A, 3B) Roof panel main body 4 Solar cell unit 5 Vent layer 21 Master beam 23, 24 Roof beam 31 Electric wire J House J1 Eave J2 ridge

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masato Iijima 2-4-5 Takaido Higashi, Suginami-ku, Tokyo Misawa Homes Co., Ltd.

Claims (1)

[Claims] 1. A roof with solar cells, such as a house, in which a plurality of roof panels with solar cells are arranged and fixed to a beam, wherein the roof panel has a panel shape in which a solar cell is provided in a roof panel body. A solar cell unit is attached, and a ventilation layer extending in one direction is formed between the roof panel body and the solar cell unit. This roof panel has the ventilation layer extending from the eaves toward the ridge and its slope. A roof with a solar cell, wherein the roof is fixed to the beam in a state of extending along and the electric wire of the solar cell is wired from the ridge portion into the house through the ventilation layer.