A lamp (1), of the type intended to be mounted onto a wall and being substantially tile-shaped, allows an eased replacement of the light source, it is adapted to a suitable standardization and it allows the separation of the manufacturing process and the storing of the light source from those of the lamp body, and comprises a light source and a reflecting member (3) for the diffusion of the light in an environment, wherein one or more LEDs (11) are arranged on a supporting member (8) provided with electrical connectors at respective ends (9) thereof, the latter being apt to be inserted in quick coupling plugs (10), shaped so as to provide said supporting member (8) with a mechanical support.