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.

Description

technical field [0001] The invention relates to an air-conditioning device in compartments of automobiles, railways and the like. Background technique [0002] It is generally believed that the lack of oxygen in the compartment during vehicle transportation is one of the causes of reduced attention or drowsiness of the passengers. In addition, when driving on a high altitude, lack of oxygen can cause altitude sickness, especially if you move rapidly up and down, the risk is very high. Therefore, it is considered that the necessity of a technique for preventing altitude sickness is high. [0003] As a method for supplementing the lack of oxygen in the vehicle cabin, there is a technique described in Patent Document 1 that separates and removes nitrogen in the atmosphere to generate oxygen-enriched air. In addition, as described in Patent Document 2, there is also a vehicle driver's fatigue degree quantified by the number of suspension displacements, and when the number of t...

AI Technical Summary

Problems solved by technology

[0006] However, in the method disclosed in Patent Document 1, since the state of oxygen deficiency of each passenger is not known, it is impossible to respond accordingly.

[0007] On the other hand, in the technique disclosed in Patent Document 2, the degree of fatigue quantified based on the number of floating displacements is an estimated value, and there is no actual measurement of the degree of oxygen deficiency of the occupants.

[0008] In addition, when driving on high altitudes, the passengers are at risk of developing altitude sickness, but the current situation is that there are almost no such countermeasures in vehicles

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