| 摘要 |
PURPOSE:To carry out the cleaning of an air-conditioning grille which is being attached to a ceiling, easily and safely without providing any scaffold. CONSTITUTION:A grille main body 30, arranged detachably to the opening end 21 of an air-conditioning duct 20, opened in a ceiling 10, is hung from a winch 40, whose driving is controlled through a controller 50, by a wire 1 reeled out through pulleys 2-4, so that the grille main body 30 can be hanged down to an arbitrary height by hanging at the time of cleaning or the like of the same. |
