A spread illuminating apparatus including a housing frame, the housing frame including respective positioning means for a light conductive bar, and a light conductive plate, and a recess for positioning a spot-like light source. The spot-like light source is mounted on a flexible printed circuit (FPC) that extends from a bottom surface of the housing frame through side and top surfaces thereof, and reaches the recess, in which the spot-like light source is housed. A cut-out for accommodating the FPC is formed in a top surface of the housing frame, and two slots for receiving the ends of the FPC are formed at both side walls of the cut-out, whereby the spot-like light source can be fixedly set in place.