| 摘要 |
PROBLEM TO BE SOLVED: To improve safety, by grounding a metal reinforcement of a solar cell device connected to a system power circuit through a transformer-less inverter connected to a roof material with solar cells having metal reinforcements. SOLUTION: An earth member 210 made of a metal has a sharp shape at a side to contact a roof material with solar cells and elastic property. When a roof material 104 with solar cells is fitted from above and fixed, the earth material 210 shrinks itself to nick the back face of the roof material 104 with solar cells, thereby electrically connecting to a metal reinforcement 205 of the roof material 104 with solar cells and the earth material 210 is fixed to a roof fixture 207 with the electric conduction taken. Thus it is possible by the above constitution to electrically connect the roof material 104 with solar cells to the roof fixture 207 through the earth member 210 and improve the safety. |
