A device for protecting an individual sitting on a seat, a seat, and a vehicle

The present invention relates to a protection device (10) having a set (15) of inflatable protection members including a neck airbag (21), a left lower airbag (22), a left upper airbag (32), a right lower airbag (23), and a right upper airbag (33). Said protection device has a lower pocket (40) provided with a lower base (41) forming said neck airbag (21) and two lower lateral branches (42, 43) forming said left lower airbag (22) and said right lower airbag (23). An upper pocket (50) at least partially secured to said lower pocket (40) is provided with an upper base (51) forming a head airbag (31) and two upper lateral branches (52, 53) forming said left upper airbag (32) and said right upper airbag (33). at least one longitudinal internal wall (54) provide at least two "tubes" (55) in each upper airbag (32, 33), said upper pocket (50) being in fluid flow communication with said lower pocket (40).