Patent ID: 7487646

Claim:
A capsule used for sleeping comprising: a capsule main body, a head-side inflow/outflow unit and a foot-side inflow/outflow unit, wherein said units have a respective outlet opening for supplying conditioned air to a sleeping compartment within said capsule main body and a respective inlet opening, associated with said outlet opening, for drawing in internal air of said sleeping compartment, and wherein said units are arranged in association with at least the head and feet of a sleeping person, air-conditioning control means for controlling the air-conditioning capacity of conditioned air supplied through each of said outlet openings so that the temperature of conditioned air supplied through said outlet opening of said head-side inflow/outflow unit falls below the temperature of conditioned air supplied through said outlet opening of said foot-side inflow/outflow unit, wherein said head-side inflow/outflow unit is configured such that said inlet opening and said outlet opening are formed along a common vertical plane of said head-side inflow/outflow unit and is constructed to produce flow of an air current causing an air circulation path between said outlet opening and said inlet opening and wherein the inlet opening and the outlet opening are operated with the conditioned air flowing out from the outlet opening and the internal air and the conditioned air flowing in from the inlet opening.