A high-pressure piston pump with a plurality of pump elements is connected on the intake side to a pump that pumps fuel at low pressure in a regulated quantity. The liquid crystal cell substrate comprises a resin substrate and, closely adhered thereon, at least a gas barrier layer, a crosslinked resin layer and a polarizing layer, wherein the polarizing layer comprises a coating layer. This arrangement provides flexibility in matching the length of the array of lodging blocks and counterweight blocks with the length of the elastic curved strip such that various windshield wipers of different lengths and specifications can be easily produced.