| 摘要 |
A mount member (6) includes a beam (14), two arms (12, 13) for connecting the beam (14) to a strut for supporting the beam (14) and a pair of arm coupling members (26). The pair of arm coupling members (26) couples respective outer ends of the two arms (12, 13) with the beam (14). Each of the arm coupling members (26) is movable between a first state in which the beam (14) and the two arms (12, 13) are overlapped and aligned in a longitudinal direction thereof with the two arms (12, 13) being in line with each other, and a second state in which mutually facing ends of the two arms (12, 13) are spaced apart from the beam (14) relative to the first state. |
