Vehicular air conditioning apparatus

A vehicular air conditioning apparatus including a casing having a plurality of passages through which air flows, heat exchangers for performing heat exchange of the air, and a damper mechanism for switching a flow state of the air in the passages,

• wherein the heat exchangers comprise a first heat exchanger for air cooling and a second heat exchanger for air heating,
• wherein the plurality of passages comprise a heated air passage and a cooled air passage, the second heat exchanger being in fluid communication with the heated air passage, the cooled air passage being formed to bypass the second heat exchanger,
• wherein the casing comprises:
• a defroster opening for blowing the air to a defroster blow-out port that opens in the vicinity of a front window in a vehicle compartment;
• and
• a vent opening for blowing the air to a vent blow-out port that opens in the vicinity of a face of a passenger in the vehicle compartment, the apparatus comprising:
• a first blowing duct for connecting the defroster opening and the defroster blow-out port;
• and
• a second blowing duct for connecting the vent opening and the vent blow-out port,
• wherein the first heat exchanger and the second heat exchanger are held substantially horizontally in the casing, and the second heat exchanger is positioned above the first heat exchanger,
• wherein the cooled air passage is provided at a forward side of a vehicle, the heated air passage is provided vertically at a rearward side of the vehicle, the cooled air passage and the heated air passage extend straight from an upper surface of the first heat exchanger toward an upward side of the vehicle,
• wherein the defroster opening is positioned directly above the heated air passage, and the vent opening is positioned directly above the cooled air passage,
• wherein in the casing, the defroster opening is disposed on a rearward side of the vehicle with respect to the vent opening, a downstream side of the first blowing duct extends toward a forward side of the vehicle, and a downstream side of the second blowing duct extends toward the rearward side of the vehicle,
• wherein the first blowing duct comprises a pair of center defroster ducts and a pair of side defroster ducts, the first blowing duct is branched in a forked manner at a downstream side of a location where the first blowing duct is connected to the defroster opening so that one center defroster duct and one side defroster duct are connected to one end portion of the defroster opening, and the other center defroster duct and the other side defroster duct are connected to the other end portion of the defroster opening,
• wherein the second blowing duct comprises a pair of center vent ducts connected to a center portion of the vent opening for blowing air toward the vicinity of a center in the vehicle compartment and a pair of side vent ducts connected to both end portions of the vent opening respectively for blowing air toward a driver's seat side and a passenger seat side in the vehicle compartment, and
• wherein one side vent duct is disposed between one center defroster duct and one side defroster duct, and the other side vent duct is disposed between the other center defroster duct and the other side defroster duct.