To restrain raindrops from adhering to a window glass at the cab side of a vehicle.

In a cab of a vehicle, a pillar deflector 5 extending vertically on the outside of a front pillar 3 is fixed, and the vehicle front of the pillar deflector 5 comes into contact with the outside of the front pillar 3. The outer surface of the pillar deflector 5 extends to the rear and the outside in the cross direction of the vehicle almost continuously to the surface of a front window glass 2, and the vehicle rear end part of the outer surface is distant from the outside of the front pillar 3. Figure shows an outside mirror 4 and a window glass 7 of the cab side respectively.