Windshield wiper device mounting washer nozzle and hose

An arm head (12) of a windshield wiper device (10) is provided on a backside thereof with an undulated groove (18) formed by side walls. The sidewalls have plural hill portions (20A, 20B, 20C) protruding in opposite directions alternately in a width direction of the arm head so as to be opposed to one another in a longitudinal direction thereof. Tops of the hill portions on one width side of the arm head are integrally provided at upper surfaces thereof with projections (38, 40) extending perpendicularly to a depth direction of the groove to overhang the groove. A hose (46) for delivering washer liquid to a washer nozzle (34, 36) is accommodated in the groove and firmly held by the hill portions and the projections without using an extra part such as a clip.