To provide a belt-type roller brush for washing glass of display device capable of separating a bristle material only from a brush roller shaft and exchanging the bristle material at the time of exchange work because of a brush life and a wearing of the bristle material while the bristle material does not generate no contact part on the surface of the glass when the bristle material of the rotating roller brush contacts on the surface of the glass.

A bristle material 2 is composed of a belt brush 20 which is stuck to a synthetic resin band forming a constant width belt configuration with a pile fabric 21 which is formed by planting a bundle of mono filaments on a ground weave of synthetic fiber and the belt brush 20 is composed by winding the belt brush along with the circumference of the brush roller shaft 1 in a spiral direction and being fixed to the brush roller shaft 1.