A disinfecting device is proposed that is well suited for household and outdoor use. The device comprises a container housing 12 with an interior volume 24, which may contain an object or a liquid to be disinfected. The container housing 12 comprises a side wall 16 and an end cover 14. A dielectric barrier discharge lamp 32 is provided for emitting ultraviolet light into the volume 24. The lamp 32 comprises a lamp vessel 34 with gas filling and electrodes 42, 44 arranged electrically insulated from the gas filling. An alternating voltage applied to the electrodes 42, 44 causes a discharge in the gas filling. The lamp vessel 34 has a planar window from which during the discharge ultraviolet light 46 is emitted. The window is arranged in the end cover 14.
