| 摘要 |
PROBLEM TO BE SOLVED: To prevent an opening provided on a ceiling from being exposed even when the locations of bolts which are attached to a beam, etc., exceed a specified range for regulation. SOLUTION: An air suction port part 4 is constituted of a box body air suction port 7 which is provided on a box body 11, and a decorative air suction port 14 which is inserted in an opening 3 and attached to the box body 11 the decorative air suction port 14 is formed of a decorative plate 15, a rib 17, and a position regulating member 19, etc. At the center of the decorative plate 15, an opening in which a filter 16 is fitted, is formed, and the rib 17 is erected on the peripheral edge. On the outer periphery of the rib 17, the position regulating member 19 is arranged, and when the decorative air suction port 14 is inserted in the opening 3 on a ceiling 2, and fixed to the box body 11, the position of the decorative air suction port 14 is regulated. By this method, the opening 3 is always covered with the decorative plate 15. |
