Vehicle seat

The seat for the vehicle is provided with the air bag and the control part. The air bag is used for keeping the posture of a seated person, expands due to air inflow and contracts due to air outflow.The control unit is configured to input a signal based on a steering angle of the vehicle to the control unit, control the inflation or retraction of the airbag by using the signal, and execute an active support mode in which air flows into the airbag when the steering angle is equal to or greater than a predetermined angle. 本实用新型的交通工具用座椅具有气囊以及控制部。气囊用于保持就坐者的姿势，并且会因空气流入而膨胀并因空气流出而收缩。控制部构成为，向控制部输入基于交通工具的转向角的信号，并且，控制部利用该信号来控制气囊的膨胀或收缩，并且，当转向角为预先规定的预定角度以上时，控制部能够执行使空气流入气囊内的主动支撑模式。