| 摘要 |
PURPOSE:To remarkably lower the temperature of the air to be blown out to the upper half of a human body without changing the temperature at a foot part with the simple operation without providing a cold air bypass flow passage for guiding the cold air to a blow-out port for the upper half of a human body. CONSTITUTION:A heater core 6 for heating the air to be blown to the upper half of a human body, a differential and a foot part of the human body is provided inside of a ventilation duct 2, and an electric heater 17 is provided inside of a foot part duct 16. When the electric heater 17 is turned ON, a control circuit 19 reduces an open degree of an air mix damper 7 by 20%, and when the electric heater 17 is turned OFF, the control circuit 19 increases open degree of the air mix damper 7 by 20%. |
