Described is a lamp which includes two fluorescent tubes arranged in parallel relationship and light distribution chambers which extend laterally therefrom on both sides, and a light-technical louver element arranged beneath the fluorescent tubes, for delimiting the light radiating angle of the fluorescent tubes downwardly, wherein arranged between the fluorescent tubes is an elongate trough which is in the form of a mirror on its outside, for accommodating the electronic operating elements for the fluorescent tubes (FIG. 1).