System dedicated for 600 x 600 module suspended ceilings. It has a module and segment construction that includes three simple elements in shape of L, T and ＋. Combination of these three elements provides unlimited possibilities of interior lighting arrangement. It is possible to combine the lighting functionallity and unique aesthetics of the interior. The location of segments can be altered any time be turning particular plaster boards. The LED system can be easily dimmed what provides some extra energy savings.