Blind assembly for port-hole i.e. passenger port-hole, of aircraft, has maintenance units including return units for elastically returning tubes in rolling and traction units permitting traction of screen in unrolling phase

摘要

The assembly has screens regulating luminosity traversing a port-hole, where the screens are rolled on winding tubes. Tension maintenance units maintain tension of a free edge of the screen during rolling and unrolling phases of the screen. The tension maintenance units include elastic return units i.e. electric or optical sensors, for elastically returning the winding tubes in rolling and traction units permitting traction of the screen in unrolling phase. The traction units have a load bar integrated to the free edge of the screen. A cable (30) freely passes inside the load bar. The screens are made of occulting material and filter material, respectively.