Air conditioner for vehicle cabin

Abstract

The invention detects the state where a vehicle cabin is or the individual occupants are short of oxygen and eliminates this shortage of oxygen. Further, the invention prevents the occupant from developing high-altitude sickness when a vehicle runs in highlands. Still further, the invention constructs a system tough to the failure of sensors. There is provided an apparatus in which a system is constructed in such a way as to provide a vehicle with a function of measuring oxygen saturation in blood, a function of measuring oxygen concentration or carbon dioxide concentration, and a function of measuring altitude and can condition air in a vehicle cabin by use of a remaining function even in the event of a failure of the respective functions. With this, it is possible to eliminate a shortage of oxygen in individual occupants according to their states and hence to prevent the occupants from developing high-altitude sickness when the vehicle runs in highlands and hence to secure the safe running of the vehicle.

Dependencies are inferred from the claim text.