To enable a curved surface of a large curvature to be more effectively wiped, a wiper-blade device has notched portions in each blade section at required intervals to allow the blade section to bend easily so as to follow a curved surface to be wiped. The notched portions are disposed so that those of one of the blade sections do not overlap those of the other in the wiping direction, and for the purpose of providing a desired bent shape for the blade sections with the notched portions formed therein, elastic bending plates are attached to a holder section to which the blade sections are attached, and the blade sections each have a more sharply bent shape at the ends thereof than in the other portions thereof.