| 摘要 |
PROBLEM TO BE SOLVED: To obtain a ceiling-type panelboard whose frame unit is formed separately from a box unit to reduce its weight and hence is attached easily. SOLUTION: A box unit 1, which is attached to a ceiling foundation via hanging bolts 9 and has an opening bottom, a frame unit 2 which is attached to the box unit to close gaps between a ceiling material adjacent to the bottom of the box unit 1 and the box unit 1 and a cover unit 3, which is attached turnably to the frame unit 2 and closes the opening of the box unit 1 are provided. The frame unit 2 has notches 35, which are attached to attaching screws 5 provided on the box unit 1 in a direction, extending from the frame unit 2 to the box unit 1 and have widths larger than the screw parts of the screws 5 but smaller than the head parts 23 of the screws 5 and, to which the screw parts of the screws 5 are fitted sidewise. |
