JP2581869C - - Google Patents

Description

Description: 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. 2. Description of the Related Art Conventionally, it has been practiced to install a solar cell on the roof of a building structure such as a house and supply power to the house from the solar cell to save energy. When installing solar cells on the roof, on the existing roof, a fixed frame type solar cell unit with a solar cell mounted on a dedicated frame, or a so-called solar cell built into a tile Means such as laying a solar cell tile on a roof panel are employed. [0003] By the way, a 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 frame type or a solar cell tile as described above, it is necessary to provide a means for taking measures against heat dissipation (radiation) to prevent a decrease in energy conversion efficiency. Further, in the case of the fixed stand, the wiring of the solar cell wires is exposed to the outside, which is susceptible to the direct influence of wind, rain, and sunlight, has a problem in durability, and it is difficult to finish the rain. There is a defect. Further, in the solar cell tile, a connector for energization is provided at a joint between the tiles, but there is a problem that rainwater invades and the connector is easily corroded. 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, to obtain a stable power supply at all times, and to connect a wire of a solar cell to wind, rain, or sun. An object of the present invention is to provide a roof panel with a solar cell, which is configured to be hardly affected by light. Means for Solving the Problems The present invention has been made to achieve the above object, and has a solar cell fixed on a roof beam to form a roof surface on a roof panel body. There is a roof slope
A plurality of flat plate-shaped solar cell modules arranged in a direction, with their end faces abutting each other with a sealing material therebetween , and a seal joy having a flat roof panel body side.
A layered ventilation layer formed along the lower surface of the solar cell module and connected to the outside between the upper surface of the roof panel main body and the solar cell module. It is characterized in that the electric wire of the solar cell module is wired in the layer. According to the roof panel with a solar cell of the present invention, the air flow passing through the ventilation layer dissipates heat of the solar cell module and suppresses a rise in temperature. Therefore, energy conversion of the solar cell module is achieved. Efficiency is always kept high and stable power supply can be achieved. In addition, since the electric wire of the solar cell module is wired in the ventilation layer, protected by the solar cell module and not exposed to the outside, it is hardly affected by direct wind, rain and sunlight. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a roof portion of a house J in which a roof 2 is configured by using a plurality of roof panels with solar cells (hereinafter abbreviated as roof panels) 1 of the embodiment. It constitutes the whole roof 2A facing south. The roof panel 1 is formed integrally from the eaves J1 of the house J to the ridge J2. The roof panel 1 is fixed on a roof beam to form a roof surface.
A plurality of flat-panel solar cell modules 4 provided with solar cells and arranged in the inclination direction of the roof, with their end faces abutting each other via a sealing material , and a roof panel main body.
A flat side is joined via a flat seal joint 11 via a seal joint 11 having a flat side, and is formed between the two in a layered manner along the lower surface of the solar cell module 4 and at the eaves end via a flat seal joint 11. It is joined in a shape, and ridge part J2 from J1
It has a basic configuration in which a gas permeable layer 5 extending over and communicating with the outside is formed. As shown in FIGS. 2 and 3, the roof panel main body 3 is formed by joining a roof panel main body 3A stretched on the ridge J2 side of the roof 2 and a roof panel main body 3B stretched on the eaves front J1 side. Become. These are all rectangular and have the same width, but the length is set longer in the roof panel body 3B. 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 asphalt roofing 6 formed on the upper surface. The vertical core members 8 are fixed to both edges and the center along the length direction of the plywood 7. Moreover, the horizontal core 9 is fixed to both edges along the width direction of the plywood 7.
And a plurality (two in this case) of horizontal core members 9b fixed to the plywood 7 along the width direction of the plywood 7 therebetween. Each horizontal core member 9 is 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 (in this case, 6 It is a panel-shaped one combined in a rectangular shape. A solar cell is an energy converter using a PN junction, for example, an N-type S
A p-type layer having a thickness of 1 to 3 μm is formed on the i-substrate so that light reaches the PN junction from the surface, and a layer utilizing the photovoltaic effect is used. The solar cell module 4 has the same width as the roof panel main bodies 3A and 3B, and has a length direction on each of the roof panel main bodies 3A and 3B.
A plurality (five in this case) is attached in a state in which it is matched with that of 3B. As shown in FIG. 5, the seal joint 11 includes 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, It is composed of a cushion 15 for holding the member 13 and the packing 14 and a joint piece 16 for holding the cushion 15. By fixing the space between the upper joint piece 16 and the packing 14 with a screw 17, the transparent member is transparent. The plates 10 are joined together. The seal joint 11 is configured to stop water between the transparent plates 10 by an elastic member 13 or the like. At the upper surface of each roof panel main body 3A, 3B, at both edges along the length direction and at the center between both edges, a prismatic spacer 18 is fixed by an adhesive or the like. . These spacers 18 extend along the length direction of the roof panel main bodies 3A, 3B, and the lower joint piece 16 of the seal joint 11 is fixed on the spacers 18 with an adhesive or the like, whereby Each solar cell module 4 is stuck on the upper surface of the roof panel body 3 (3A, 3B). Then, as shown in FIG. 2 and the like, the presence of the spacer 18 causes a gap corresponding to the thickness of the spacer 18 between the upper surface of the roof panel main body 3 (3A, 3B) and the lower surface of each solar cell module 4. Are formed, and this gap extends in the longitudinal direction of the roof panel 1 to form the ventilation layer 5 extending from the eaves J1 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 (3A, 3B), and a ventilation layer 5 is formed between the two. As shown in FIG. 1, the roof panel 1 has the solar cell module 4 facing upward, the roof panel main body 3A disposed on the ridge J2 side, and the roof panel main body 3B disposed on the eaves front J1 side. It is fixed to a roof beam 23 at the upper end of the outer wall panel 22 and a roof beam 24 therebetween. More specifically, both ends of the longitudinal core member 8 of the roof panel body 3A in the length direction are connected to the ridge 2
1 and the roof beam 24, the end of each vertical core 8 of the roof panel body 3B on the ridge J2 side is the roof beam 24, and the eaves tip J1 of each vertical core 8 is closer to the roof beam 23. , Respectively. Each vertical core member 8 is fixed by an adhesive or the like. Then, the plurality of roof panels 1 are arranged side by side in close contact with each other in the lateral direction, and the roof 2A is configured. The roof panels 1 adjacent to each other are joined by joining the (transparent plates 10 of) the solar cell modules 4 to each other by the seal joint 11. As shown in FIG. 3, an eave tip fitting 25 and a nose cover 26 each having an L-shaped cross section are attached to the eave tip part J1. 28b are respectively attached. Further, a gallery 40 having a large number of small holes 40a as shown in FIG. 6 is attached to an opening over the entire length of the eaves portion J1 between the eaves hardware 25 and the gable 28b. Intrusion is to be prevented. The roof panel 1 constitutes a roof 2A facing the south of the house J, and a roof 2 on the opposite side.
B is configured such that a general roofing material 42 is stretched over the roof panel main body 3 (3A, 3B) via a core material 41. As shown in FIG. 7, the structure of the ridge J2 of the house J is such that a pair of left and right connecting purlins 29 is sandwiched between upper roof panel bodies 3A constituting the roofs 2A and 2B. The ridge fitting 30 is fixed from the roof 2A to the roof 2B. The spacer 18 on the roof 2A side and the core material 41 on the roof 2B side are connected to the combined purlins 29.2.
9, an angle 43 having a U-shaped cross section extending in the longitudinal direction of the ridge is fixed to the spacer 18 and the core material 41, and an angle 44 is fixed to the ridge fitting 30. Further, a plurality of ventilation holes 45 are provided in the side portion 30a of the building hardware 30.
Are formed in the longitudinal direction of the ridge fitting 30 at intervals. In the state where the roof 2A is configured as described above, the ventilation layer 5 extends along the slope from the eaves J1 to the ridge J2 by the spacers 18, and these extend in the horizontal direction. Many are lined up. These ventilation layers 5 are open to the outside through the eaves J1 on the eaves J1 side, and open to the outside from the ventilation holes 45 through the ridge fittings 30 on the ridge J2 side. Now, in each of the solar cell modules 4, as shown in FIG. 4, the different poles of the adjacent solar cells are located between the roof panel main bodies 3 (3 A, 3 B) and the respective solar cell modules 4. The electric wires 31 are finally connected to the ridge J2 side through the ventilation layer 5, and the electric wires 31 are provided in the house J through the roof panel main body 3A and the left side joint purlin 29 and the lateral bridge 21. Connected to charging means (not shown)
An indoor wiring is made from this charging means, and electric power is supplied. According to the roof panel 1 of the present embodiment having the above configuration, the roof panel main body 3 (3A, 3B) fixed to the roof beams 23 and 24 to form a roof surface, and the roof panel main body 3
Since the ventilation layer 5 is formed between the solar cell module 4 and the solar cell module 4 attached to the upper surface of (3A, 3B), the solar cell module 4 dissipates heat and suppresses a temperature rise. Moreover, since the ventilation layer 5 extends from the eaves J1 to the ridge J2 along the gradient thereof, an upward airflow is generated in the ventilation layer 5 from the eaves J1 to the ridge J2. The air flow passes through the ridge fitting 30 and exits through the ventilation hole 45 to the outside. That is, the flow of air in the ventilation layer 5 is more active due to the rising airflow, and therefore, the action of suppressing 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 kept high, and stable power supply can be achieved. The electric wires 31 of each solar cell module 4 are wired to the ventilation layer 5 and protected by each solar cell module 4 and are not exposed to the outside. Further, since the ventilation layer 5 communicates from the eaves J1 to the ridge J2, the electric wires 31 of the solar cells are connected when the roof panel 1 is assembled and drawn to the ridge J2 side. At the time of construction, it can be pulled out from the ventilation layer 5 to the ridge J2 side and wired indoors, so that there is no need to perform wiring work of the solar cell on the roof, and the construction is not troublesome. In the above embodiment, only the roof on the south side is constituted by the roof panel 1 with solar cells. However, the north and south sides may be constituted by the roof panels 1 with solar cells. As is clear from the above description, according to the roof panel with solar cells of the present invention,
On the upper surface of the roof panel main body that is fixed on the roof beam and constitutes the roof surface, a plurality of flat solar cell modules provided with solar cells and arranged in the inclination direction of the roof have end faces each other via a sealing material. In the abutted state , the roof panel body side is flatly joined by a seal joint having a flat side, and a layered ventilation layer extending along the lower surface of the solar cell module and communicating with the outside is formed. Since the electric wire of the solar cell module is wired to the outside, the heat flow of the solar cell module is dissipated by the airflow passing through the ventilation layer communicating with the outside, and the temperature rise is suppressed. The energy conversion efficiency of the battery module is always maintained at a high level, and stable power supply can be achieved. An effect, such as less susceptible to. Further, since the roofing material is constituted by the solar cell module itself, the structure can be simplified, and the roof surface having a limited area can be effectively used. Furthermore, with the flat solar cell modules abutting each other , the roof panel
Since the main body side is joined in a flat plate shape via a flat seal joint, when it rains, rainwater can flow quickly along the slope without infiltration of rainwater from the gap between each solar cell module Thus, it is possible to prevent the efficiency of the solar cell from decreasing due to rainwater. In addition, the ventilation layer provided along the lower surface side of the solar cell module can be made smooth, and the air flow in this ventilation layer can be made smooth.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a house roof to which a roof panel with solar cells according to one embodiment of the present invention is applied. FIG. 2 is a side sectional view of a roof. FIG. 3 is a sectional view taken along the line PP of FIG. 2; FIG. 4 is a perspective view of a roof panel with solar cells of one embodiment. FIG. 5 is a sectional view of a connection member of the solar cell module. FIG. 6 is an enlarged side view of an eaves tip. FIG. 7 is a sectional view of a ridge. [Description of Signs] 1 Roof panel with solar cell 2 (2A) Roof 3 (3A, 3B) Roof panel main body 4 Solar cell module 5 Vent layers 23, 24 Roof beam 31 Electric wire

Claims (1)

Claims: 1. A plurality of flat solar cells having solar cells provided on an upper surface of a roof panel body fixed on a roof beam and constituting a roof surface and arranged in the inclination direction of the roof. The module is mounted on the roof panel with the end faces of the modules abutting each other via a sealing material.
A layered air vent joined along the lower surface of the solar cell module and connected to the outside between the upper surface of the roof panel main body and the solar cell module by being joined in a flat plate shape by a seal joint having a flat panel body side. A roof panel with solar cells, wherein a layer is formed, and electric wires of the solar cell module are wired to the ventilation layer.