| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a roof inspection hole which is installed on a roof and prevents lightening damage resulting from that the roof inspection hole is apt to be arranged at a specified place on the roof, namely, to solve the problem in which when the roof inspection hole is made of metal, electric energy of lightning is possibly transmitted if a lightning rod, a framework raising conductor, etc., are struck by the lightning and the problem in which the roof inspection hole is close to the framework raising conductor etc., arranged at an outer peripheral part of the roof along a parapet since the roof inspection hole is usually arranged at a part connecting a plurality of sections of a building, such as an apartment house, consisting separately of the plurality of sections and the part is generally positioned at an outer peripheral part of the building. <P>SOLUTION: The roof inspection hole is formed by coupling a metallic lid 4 rotatably to a metallic frame 2 fixed to a roof opening 1 through a hinge part 3, and includes a ground line connection part 7 which detachably connects a ground line 6 laid on a roof 5. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
