| 摘要 |
PROBLEM TO BE SOLVED: To reduce waste of aluminum foil frame or resin frame by simply replacing only contaminated filter of a ventilating fan cover. SOLUTION: The filter replacement type ventilating fan cover 5 is mounted at a wall antifouling cover 4 for a ventilating fan. At the time of replacing a filter 7, a filter retaining frame 6 is removed, and only the filter is replaced. A deflection of the filter 7 is removed by a recess 9 and protrusion 10 so as not to drop or deviate the frame 6 via a pin system 8 at the time of setting the filter, and snugly fixed. |
