<p>The device (10) for a vehicle passenger compartment (5) comprises at least one seat comprising a seat cushion (12) coupled to a backrest (11), the seat being able to be moved between a seat-down position of occupation by a passenger and a seat-up non-obstructing position, first means of movement at least in rotation about a first axis substantially parallel to a lateral edge of the seat cushion (12) allowing a first rotational movement of the seat cushion (12) with respect to the backrest (11) between the seat-down position of occupation and a tipped-up position in which the seat cushion (12) is substantially vertical, and second means of movement at least in rotation about a second axis substantially parallel to a lateral edge of the backrest (11) allowing a second rotational movement of the seat cushion with respect to the backrest (11) between the tipped-up position and a position in which the seat cushion (12) is folded up against the backrest (11).</p>
