Abstract: A cleaning or sterilizing apparatus combined with an UV lamp consisting of an upright compact vacuum cleaner (26) comprising a dust container (27) with a transparent bottom (28) and a suction nozzle (34) incorporated in the bottom (28) and a protective housing (31) which covers the dust container (27) and which incorporates a fan (53) with a centrifugal dust filter (54) and an UV germicidal lamp fixture (14) for destroying micro-organisms on a surface to be cleaned and inside the dust container (27). The dust filter (54), which consists of a cylindrical grating (62) with or without a cylindrical paper filter (63), is mounted to the cylindrical opening (59) of the fan's impeller (53a) and located partly outside of the fan's casing (60) but inside the dust container (27).