| 摘要 |
PURPOSE: To fix surely a filter to a filter cover without any looseness irrespective of deterioration of the stretchability of a filter member, in a filter cover for a ventilation fan. CONSTITUTION: In a filter cover 5 for a ventilation fan having a filter 13 at its front surface to be installed at the front surface of a main body of the ventilation fan, the filter 13 is installed at the filter cover 5 by a method wherein ring rubbers 28, 29 inserted into a pair of slits formed at a right side holder 19 of a filter member 14 are engaged with L-shaped ribs 34, 35 arranged at a right side wall of the filter cover and in turn engaging holes 17, 18 of a left side holder 16 are engaged with L-shaped ribs arranged at the left side wall of the filter cover. |
