| 摘要 |
A ceiling attachment apparatus comprising a ceiling joist including a molded frame member having a ]-shaped section having an open space in the central portion or a ceiling joist including a molded frame member having a section of a shape resembling a lip groove and another plate-like molded frame member having both the sides engaged with the lip of said molded frame member, said ceiling joist having a screw-inserting groove formed on the lower face of the lower side thereof in the longitudinal direction, a ceiling panel disposed along the lower face of the ceiling joist, a fitting fixture, a part of which is fitted on a groove formed on the side face of the ceiling panel, and a screw inserted through a hole of the fitting fixture and pressed and fixed into said screw-inserting groove of the ceiling joist.
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