| 摘要 |
PURPOSE:To simplify a link mechanism by distributing blowoff blast by two doors, and to reduce the air resistance and promote the accuracy of by-level operation by increasing the area of blowoff ports. CONSTITUTION:There are provided a ventilator blowoff port 38 and a defroster blowoff port 39 in the upper part of an air mixing chamber 35 in a heater case 31, while a floor blowoff port 40 in the lower part. The air mixing chamber 35 is divided into a main chamber 42 and an auxiliary chamber 43 by a partition wall 41 of the ventilator blowoff port 38, while the main chamber 42 is provided with a ventilator door 45 to distibute the air introduced from a heater unit part 30 to the ventilator blowoff port 38 and an air vent 44 on the partition wall 41. The auxiliary chamber 43 is provided with a floor defrost door 46 to distibute the air introduced from the air vent 44 on the partition wall 41 to the defroster blowoff port 39 and the floor blowoff port 40. This construction permits to increase the area of blowoff ports, and reduce the air resistance. |
