PURPOSE: To further improve crew's comfortableness by providing a correction means for changing over the current first diffusion mode or second diffusion mode to the second diffusion mode or first diffusion mode, and keeping the selected mode for the predetermined time, when an amount of solar radiation changes by the predetermined level or more.
CONSTITUTION: There are provided a diffuser outlet CL1 capable of changing over the diffusion of the conditioned air from a blower fan CL7 to the first diffusion mode of high air-speed and the second diffusion mode of low air-speed, a solar radiation detection means CL2 for detecting a solar radiation amount, a cabin temperature detection means CL3 for detecting a cabin temperature and a control means CL4 for changing over and controlling the diffusion outlet to the first or second diffusion mode on the basis of the change of a thermal load such as a cabin temperature. Also, a diffusion state is normally controlled with the control means CL4 on the basis of the thermal load, and only when a solar radiation amount changes by the predetermined amount or more, the current first diffusion mode or second diffusion mode is selected to the second or first diffusion mode with the correction means CL5 and the selected mode is kept for the predetermined time.
TAKAHASHI HIDEO
ISHIHARA YUJI
| JPH01136813A | 1989-05-30 | |||
| JPS5934915A | 1984-02-25 | |||
| JPS588612U | 1983-01-20 |