Abstract: [TASK] In a reclining seat device, the behavior of the vehicle is accurately conveyed to a seated occupant without regard to the reclining angle of the seat back with respect to the seat cushion. [SOLUTION] The air cells 30 of the seat cushion 22 are vibrated with a higher intensity than those of the seat back 26 when the reclining angle is smaller than a predetermined value, and the air cells 30 of the seat back 26 are vibrated with a higher intensity than those of the seat cushion 22 when the reclining angle is equal to or greater than the predetermined value.

Abstract: There are provided a display system and a vehicle that provide good usability to an occupant. A display system includes: a projection device provided in a vehicle interior of a vehicle and capable of projecting a video in the vehicle interior; a sensor provided in the vehicle to detect a state of the vehicle or an occupant of the vehicle; and a control unit that receives a signal from the sensor to control the projection device. The control unit changes a projection state of the projection device based on the signal from the sensor. By automatically changing the projection state of the projection device, the effort for the occupant to operate the projection device is saved, and the usability of the projection device is improved.

Abstract: An attachment structure and an interior component is capable of supplying electric power to a functional component even when a vehicle is stopped. The functional component includes a first functional component attached to a fitting portion of an interior member, the fitting portion capable of supplying electric power, and a second functional component attached to the first functional component. The first functional component includes a first power receiver receiving the supply of the electric power from the fitting portion, a power storage storing the electric power, a power supply supplying the electric power to the first functional component and the second functional component, and an opening for connecting the second functional component. The second functional component includes an insertion inserted into the opening, and a second power receiver that receives the supply of the electric power from the first functional component when the insertion is inserted into the opening.