| 摘要 |
PURPOSE: To detect a broken line existing in either position of a bus bar by measuring voltage drop from a connecting part at the end of the bus bar to the end the farthest from the center along the longest bus bar. CONSTITUTION: A conductive coating 13 is placed on the inner side of an outer glass plate 10, a bottom bus bar 15 and a top bus bar 16 come in contact with the coating 13. A line 17 shows the edge of the coating 13 separated from the ends of the side and the bottom of a transparent body, the region of the end which is not coated does not come in contact with the coating 13, and is connected to the top bus bar 16. A lead wire 20 of a voltage sensor starts from a terminal region 19 and is extended from an extended part 18 in parallel to the bottom bus bar 15 or along the opposite side end, and comes in contact with the end of the top bus bar 16. A detector is made sensitive to a break along the all sides of the transparent body. |
