PURPOSE: To divide and partition a space without affecting the feeling and visibility of space of a cabin and movement of persons in emergency escape and boarding and disembarking by providing a film-like injection nozzle injecting fluid from either of side walls and floor in film form and a suction port capable of sucking film-like injection on a position opposite to the film-like injection nozzle.

CONSTITUTION: Since a fluid wall 3 blown from a film-like jet nozzle 4 is sucked into a suction port 5 in a floor surface 03 in film form, a space divided by the fluid wall 3 in the machine axial direction and the direction crossed at right angle to that direction becomes independent spaces with respect to fluid because its upper and lower parts are shut off by a ceiling 02 and a floor surface 03. Even if a passenger on a seat 2 in the space smokes, its smoke and smell will not diffuse or flow toward the passengers in an adjacent space but remain in that space only. Then the smoke and smell are sucked into a suction port 5 following the film-like jet, and exhausted to the outside of an aircraft or recirculated after passing through a CO2 eliminator, smoke eliminator, and smell eliminator. Thus any trouble will not be given to those passengers at all who are sitting outside the space.