A car sickness inhibition device includes: a memory and a processor connected to the memory, the processor being configured to: acquire an acceleration a in a front-rear direction of a vehicle or angles of inclination of the head and upper body of an occupant sitting in a seat of the vehicle; and by using expression >tan.sup.1(a/g).Math.(1), where g denotes gravitational acceleration, obtain from the acquired acceleration a an angle of inclination 0 with which car sickness is inhibited, or obtain an acceleration a0 with which car sickness is inhibited.

An in-vehicle device includes: a parking state detector configured to detect a parking state of a vehicle; a vehicle cabin situation detector configured to detect a situation in a vehicle cabin of the vehicle; a child information detector configured to detect presence of a child and position information on the child in the vehicle cabin based on a signal from a sensor provided on a child seat in the vehicle cabin; a temperature information acquisition unit configured to acquire temperature information in the vehicle cabin; a notification unit configured to, when the child is left in the vehicle cabin, notify outside of the vehicle that leaving of the child has occurred; and a controller configured to, when the vehicle is in the parking state, control a notification mode of the notification unit according to information including the temperature information in the vehicle cabin.

A seat can provide improved ventilation to a seat occupant. The seat can have a seat body including a core and an outer cover defining an outer surface of the seat. A flow passage can be defined in the seat body. The flow passage can include an opening defined in the outer cover. The portion of the seat body including the opening can be caused to move away from a seat occupant. Thus, convective cooling can be provided to the seat occupant in a region corresponding to the portion.

There are provided a heater control method for a vehicular seat, and a heater control system thereof. A warming period by a heater is divided into a first time period including start of warming and a second time period following the first time period. A first heater region is controlled to be continuously set in a warming state between the first time period and the second time period. A second heater region is controlled to be set in the warming state in the first time period and to be set, during the second time period, in a low-temperature warming state having a lower temperature than the warming state in the first time period or in a non-warming state. The first heater region and the second heater region are provided in at least one position of seating surfaces of a seat cushion and a seat back of the vehicular seat.

Provided is a vehicle seat with a structure enabling a rockable moving piece to be disposed in a seat face in a well-fitting manner. A vehicle seat in which a rocking means having a drive mechanism and a moving piece for conveying rocking movement of the drive mechanism to a seated person is disposed in a through hole obtained by hollowing out a portion of a seat face of a seat cushion, wherein: a recess which is recessed in the thickness direction so as to surround the through hole is disposed in the seat face of the seat cushion; and the moving piece is shaped so that the bottom surface side follows the recess.

A wire harness connected to a sensor is positioned on a back surface of a pad of a vehicle seat supported by a panel. The vehicle seat includes a panel; a pad supported by the panel; a skin material covering a front surface of the pad; and a sensor provided between the front surface of the pad and the skin material for acquiring information on a seat occupant, wherein the pad is provided with a through hole passed from the front surface of the pad to a back surface of the pad, and a recess formed in the back surface of the pad and connected to the through hole, the wire harness connected to the sensor extending in the through hole and the recess.

A system for preventing a child from being inadvertently left behind in a child car seat. A mat is configured to be positioned under a bottom pad and rest on a seat bottom of the child car seat. The mat is generally U-shaped to fit around the harness system of the child car seat. A pressure sensing component is integrated or attached to the mat to indicate the presence of a child in the child car seat. A controller in electrical communication with the pressure sensor is configured to receive the pressure sensor data and notify the user if the child is still in the child car seat. A temperature sensor is used to warn the user if a temperature reaches a dangerous level. The controller may notify the user via a mobile application accessible via a mobile electronic device.

A method for preparing a vehicle prior to an occupant entering the vehicle includes acquiring information indicative of an upcoming time of entry of the occupant into a compartment of the vehicle, and commencing air replacement of at least part of the air in the compartment of the vehicle prior to the upcoming time of entry of the occupant. In some embodiments, the method also includes detecting whether the compartment of the vehicle has occupants, and commencing the air replacement responsive to detecting that the compartment of the vehicle has no occupants. In some embodiments, the method further includes determining a latest possible time for commencing the air replacement provided that the air replacement is to be completed at the upcoming time of entry of the occupant, and commencing the air replacement based on the determined latest possible time.