| 摘要 |
PURPOSE:To simplify structure to reduce labor in manufacturing, secure appropriate air quantity and air speed while holding predetermined air conditioning capacity, and reduce noise. CONSTITUTION:This ventilation device is provided with first ducts 29, 30 arranged in an upper part of a vehicle 27 for supplying conditioned air from an air conditioning means into a cabin; second ducts 46, 47 arranged in a lower part of the vehicle 27 for sucking air inside the cabin for returning; third ducts 51, 52 arranged in the lower part of the vehicle 27 for sucking air inside the cabin for leading thereof to an exhaust means; air conditioning means 34, 35 arranged under a floor for mixing returned air from the second ducts 46, 47 with air from outside the cabin sucked in by a suction means for air conditioning; and a ventilating means including a suction means and an exhaust, means. When the inside of the cabin is partitioned, independent ventilating means are provided for respective compartments and the third ducts 51, 52 are connected to an exhaust port of a lavatory. |
