US 12,441,216 B2
Car sickness inhibition device, method, storage medium, and vehicle seat
Kazuhito Kato, Yokohama (JP); and Kousuke Suzuki, Yokohama (JP)
Assigned to NHK Spring Co., Ltd., Yokohama (JP)
Filed by NHK SPRING CO., LTD., Yokohama (JP)
Filed on Sep. 27, 2022, as Appl. No. 17/935,872.
Claims priority of application No. 2021-166452 (JP), filed on Oct. 8, 2021.
Prior Publication US 2023/0114061 A1, Apr. 13, 2023
Int. Cl. B60N 2/24 (2006.01); B60N 2/00 (2006.01); B60N 2/90 (2018.01)
CPC B60N 2/24 (2013.01) [B60N 2/0028 (2023.08); B60N 2/90 (2018.02); B60N 2/003 (2023.08); B60N 2002/981 (2018.02); B60N 2210/30 (2023.08); B60N 2220/10 (2023.08); B60N 2220/20 (2023.08)] 13 Claims
OG exemplary drawing
 
1. A car sickness inhibition device comprising:
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 θ of the head and upper body of an occupant sitting in a seat of the vehicle; and
by using expression (1) below,
θ>tan−1(a/g)  (1)
where g denotes gravitational acceleration, obtain an angle of inclination θ0 with which car sickness is inhibited by assigning the acquired acceleration a into the expression (1), or obtain an acceleration a0 with which the car sickness is inhibited by assigning the acquired angles of inclination θ into the expression (1),
wherein the processor is further configured to control adjustment of angles of the seat by seat angle adjustment devices so that the angles of inclination θ of the head and upper body of the occupant sitting in the seat of the vehicle each become equal to or greater than the obtained angle of inclination θ0 with which the car sickness is inhibited.