Automotive air conditioner with flexible plate-like member for controlling flow of air therein

An automotive air conditioner includes a duct (1) defining therein a space extending in a first direction for allowing the flow of air therethrough, and guide paths (8) provided on the duct and extending in a second direction crossing the first direction. A plate-like member (6) is provided in the space and moved along the guide paths to control the flow of air in the space. The plate-like member has flexibility in the first direction. The plate-like member may be used to adjust the ratio of the amounts of air passing through air flow passages (4,5) that are arranged in parallel to each other in the second direction in the space. The plate-like member may also be used to adjust the amounts of air blown out of air outlets (13,14,15) of the duct that correspond to different air conditioning modes.