A blowing target structure includes an opening portion that (a) is an inlet into which the air flow from a blower pipe that has an elongated shape in one direction, (b) is elongated in the same direction as the one direction of an outlet of the blower pipe, (c) has a member that is provided at least on one end side in a lateral direction orthogonal to a longitudinal direction of the opening portion to set an air permeability of a member side region of the opening portion to a value smaller than an air permeability of a region other than the member side region of the opening portion.