Abstract: The invention relates to a light housing which, together with other same-type housings, is intended to form a lighting wall, such as a ceiling. The inventive housing comprises a frame having at least one transparent or translucent panel (9) fixed to the base thereof and can receive lighting means (3) which are disposed above said frame. The light housing is characterised in that it comprises stiffening means (10, 10?) which provide a link between certain sides (1a) of the frame, said stiffening means (10) being disposed close to the above-mentioned lighting means (3).

Abstract: A false ceiling or wall comprising a frame which can be fixed to the edges of a ceiling or wall and is adapted to hold a sheet having a rigid edge. The frame includes a rail having an abutment thereon and shoulder forming a free space therebetween to receive a rigid edge of the sheet. The rigid edge of the sheet has a hook shape which engages the shoulder when in place, and the shoulder extends in a direction to that in which the sheet material exerts tension.