To provide a cleaner which can readily restore a contact state of a rotary brush with a road surface or floor surface even when the length of bristles of the rotary brush gets shorter, and can readily collect and dispose of dust.

The cleaner of claim 1 comprises a swingable bearing for supporting a rotary shaft of the rotary brush, freely adjusting distance between the tips of the bristles of the rotary brush and the floor surface. The cleaner of claim 2 is provided with a dust storing box adjacent to the rotary brush, and the cleaner of claim 3 is provided with a filter box including a filter and a dust removing member for removing the dust stuck on the filter by beating the filter through its reciprocating motion.