Air conditioner for vehicle

An air conditioner for a vehicle comprising:

• a case in which an air passage is formed;
• and
• a filter arranged inside the case to cross the air passage, wherein
• the case has an opening for attaching/detaching the filter to/from the case,
• the case has a guide unit to guide a movement of the filter when the filter is being detached from/attached to the case and to hold the filter in a filter mounted state where the filter is mounted in the case, the guide unit being provided on an inner wall surface of the case,
• the guide unit has
• a positioning portion distanced from the opening to determine a position of the filter in the filter mounted state, and
• a service portion located between the positioning portion and the opening to increase a flexibility in a posture of the filter when the filter is being detached from/attached to,
• each of the positioning portion and the service portion has
• an upstream guide surface to be in contact with an upstream portion of the filter when the filter is being attached or detached or in the filter mounted state,
• a downstream guide surface to be in contact with a downstream portion of the filter when the filter is being attached or detached or in the filter mounted state, and
• a side guide surface to be in contact with a side portion of the filter when the filter is being attached or detached or in the filter mounted state,
• the inner wall surface of the case has an upstream inner surface upstream of the guide unit in a flow of air,
• a position of the side guide surface is located outward of the upstream inner surface,
• a distance between the upstream guide surface of the service portion and the filter is wider than a distance between the upstream guide surface of the positioning portion and the filter in the filter mounted state,
• the case has a water prevention rib protruding from the upstream inner surface so as to extend in a direction intersecting a flow of air at a position upstream of the service portion in a flow of air,
• the inner wall surface has a case bottom surface located on a lower side of the case and a case upper surface located on an upper side of the case,
• the guide unit has a lower guide provided on the case bottom surface and an upper guide provided on the case upper surface,
• the filter is mounted inside the case so that an extending direction of the filter is along a vertical direction, and
• the water prevention rib is a lower rib provided on the case bottom surface at a position upstream of the service portion of the lower guide in a flow of air.