A vehicle seat includes an air mover within a seatback. An inlet channel extends from an occupant seatback surface to the air mover and includes first and second outlet channels. The air mover selectively and alternatively moves air from the inlet channel to one of the first and second outlet channels. The first outlet channel includes a vent located proximate a headrest.

In an apparatus for facilitating fatigue reduction of a user, a characteristic identifier identifies at least one personal characteristic item of the user, and a hot-cold stimulus controller instructs a hot-cold stimulator to apply hot and cold stimuluses to the user in accordance with a stimulus condition, and varies, based on the identified at least one personal characteristic item of the user, the stimulus condition of each of the hot stimulus and cold stimulus. The stimulus condition of each of the hot stimulus and cold stimulus include at least one of, one or more parts of the user to which the corresponding one of the hot stimulus and cold stimulus is to be applied, a temperature of the corresponding one of the hot stimulus and cold stimulus, and an application period of the corresponding one of the hot stimulus and cold stimulus to the user.

In a seat air-conditioning device, a refrigeration cycle, a warm air blower, and a cold air blower are housed in a housing disposed between a seat face of a seat and a vehicle interior floor. A condenser is disposed on an upstream side in an air blowing direction and the warm air blower is disposed on a downstream side in an air blowing direction in a warm air flow path extending in a predetermined direction. An evaporator is disposed on a downstream side of the cold air blower in an air blowing direction in the cold air flow path extending in a predetermined direction.

The present teachings relate to a neck fan for a vehicle seat for generating a usable air flow that emerges from the neck fan toward a passenger, said neck fan being provided with at least one air conveying device for generating a usable air flow in the region of a headrest or the upper end of a seat back. It is provided that one or more compensating means are provided, by means of which asymmetrical climatic conditions caused by interfering currents in the area surrounding a passenger can be compensated for, and that one or more compensating means act asymmetrically on the usable air flow and/or impart an asymmetry to the cross-section of the usable air flow, at least in the region of an outlet of the neck fan, said asymmetry relating to at least one geometric or thermodynamic parameter.

A seat includes an air discharge port configured to provide a thin stream of conditioned air along a body surface of a seat occupant. The air discharge port is part of an air supply component located in or along the seat bottom or backrest. The air discharge port is positioned to direct conditioned air along an external surface of the air supply component or of another surface of the seat to form an initial thin stream of conditioned air that follows external seat surfaces to reach and flow along the seat occupant. The air supply component can be made adjustable to allow the location and/or direction of the discharged air to be changed to accommodate and maintain the conditioned air in a thin stream.

A seat headrest assembly (16) includes a core (54) that includes a core bottom (56). A thermal conditioning device (22) includes a housing (26) that provides a fluid passage (28) that extends to a vent (62). A heating module (36) and a blower (38) are arranged in the fluid passage. The thermal conditioning device is arranged beneath the core bottom.

A seat thermal conditioning device includes a seat portion having a vent configured to provide conditioned air to a seat occupant neck area. A thermoelectric module is arranged in the seat portion. The thermoelectric module is configured to both heat and cool an air supply to provide the conditioned air.

The seat air conditioner configured to supply conditioning air to a seat in a vehicle cabin includes a refrigeration cycle, an air blower, and a conditioning air supply unit. The refrigeration cycle includes a compressor that compresses and discharges a refrigerant, a heat emitting portion that emits heat of the refrigerant discharged from the compressor to generate a warm air, a decompressor that decompresses the refrigerant flowing out of the heat emitting portion, and a heat absorbing portion that evaporates the refrigerant decompressed by the decompressor to generate a cold air. The air blower blows air to exchange heat with the refrigerant. The conditioning air supply unit supplies each of the warm air generated by the heat emitting portion and the cold air generated by the heat absorbing portion as the conditioning air to the seat.

A ventilation device of a vehicle includes an air outflow opening disposed on an upper side of a backrest of a seat of the vehicle such that an airflow from the air outflow opening flows in a direction of a roof of the vehicle. A plurality of air guiding elements are pivotably mounted in a region of the air outflow opening where an air volume of a front partial airflow and a rear partial airflow is settable by the plurality of air guiding elements. A further air guiding element is disposed on the roof in a region of the airflow where the airflow is dividable and deflectable by the further air guiding element.

A head restraint for a motor vehicle has devices such as a fan and a heating element such that heated air can flow out of a front side of the head restraint if necessary. The head restraint enables heating of a head by way of outflowing heated air. A passage opening is formed in the cushion body of the head restraint, which passage opening extends from a back side of the cushion body to a front side of the cushion body. A cavity is formed in the passage opening at a distance from the back side and at a distance from the front side of the cushion body, in which cavity at least one fan is arranged. An air-permeable, electrically operated heating mat is provided on the back side of the cushion body in order to heat the suctioned air, and the pre-heated air is additionally heated by an air-permeable, electrically operated heating mat located on the front side of the cushion body.