| 摘要 |
PROBLEM TO BE SOLVED: To provide a prefilter for an air purifier, which is suitable for a largely opened front panel. SOLUTION: The front panel 10 has the largely opened air sucking ports 11 formed in three directions of the upper direction and right-and-left directions of the front side. The pre-filter 30 is mounted to be freely attachable/detachable on the rear side of the panel 10. The pre-filter 30 is provided with a filtering member 31, a frame body 32, a reinforcing member 33 and a dust invasion preventing member 34. The member 33 is formed in the region other than the neighboring region of the ports 11 of the filter surface 39 when the pre-filter 30 is mounted on the panel 10. |
