JPH05243598A - Roof panel with solar cell - Google Patents

Abstract

PURPOSE:To prevent a decrease in an energy conversion efficiency and to so form wirings of a solar cell as to be scarcely affected by influence of wind and rain in a roof panel with the solar cell. CONSTITUTION:A solar cell module 4 is adhered to a roof panel body 3 through a spacer, and a ventilation layer 5 is formed between the body 3 and the module 4, and the module 4 is wired to the layer 5. High heat of the module 4 is suppressed by an air flow of the layer 5, and the wirings are not exposed externally by the module 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof panel constituting 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 frame 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 or sunlight, and there is a problem in durability.
There is a problem that it is difficult to keep away from rain.

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. It is an object of the present invention to provide a roof panel with a solar cell having a structure that is not easily affected by light.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and a panel-shaped solar cell module provided with a solar cell is attached to a roof panel body and a solar cell module. Form a ventilation layer between
It is characterized in that the electric wire of the solar cell module is wired in this ventilation layer.

[0008]

According to the roof panel with a solar cell of the present invention, the heat flow of the solar cell module is suppressed by the air flow through the ventilation layer and the temperature rise is suppressed. Therefore, the energy conversion efficiency of the solar cell module is always maintained. It is maintained at a high level and stable power supply can be achieved.

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

[0010]

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. 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 (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, 3B, and the length direction is made to coincide with that of the roof panel bodies 3A, 3B on the upper surfaces of the roof panel bodies 3A, 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 these elastic members 13, and these elastic members. 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.

In this embodiment, a plurality of panel-shaped solar cell modules 4 provided with solar cells are attached to the roof panel body 3 (3A, 3B), and a ventilation layer 5 is formed between them. 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, both longitudinal ends of each vertical core member 8 of the roof panel main 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 laterally arranged in close contact with each other 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 end portion J1 is provided with eaves end hardware 25 having an L-shaped cross section and a nose cover 26, respectively, and the end of the wife 27 has a kebab metal fitting 2
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 are arranged 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 different 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.

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 is formed from the eaves portion J1 to the ridge portion 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.

[0030]

As is apparent from the above description, according to the roof panel with a solar cell of the present invention, a panel-shaped solar cell module provided with a solar cell is attached to the roof panel body, and the roof panel is provided. Since the ventilation layer is formed between the main body and the solar cell module, and the electric wire of the solar cell module is wired in this ventilation layer, the heat flow of the solar cell module is dissipated by the air flow through the ventilation layer. As a result, the temperature rise is suppressed, and as a result, the energy conversion efficiency of the solar cell module is always kept high, stable power supply can be achieved, and the electric wires of the solar cell module are less susceptible to direct wind and rain or sunlight. It has the effect.

[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 body 4 Solar cell module 5 Vent layer 31 Electric wire

Front page continued (72) Inventor Masato Iijima 2-4-5 Takaido Higashi, Suginami-ku, Tokyo Misawa Homes Co., Ltd.

Claims (1)

[Claims] A panel-shaped solar cell module provided with solar cells is attached to a roof panel body, and a ventilation layer is formed between the roof panel body and the solar cell module. A roof panel with a solar cell, in which electric wires of a battery module are wired.