Abstract: A waterproof and/or dustproof protection device for an electrical connector in a tubular radiation emitter disposed in a housing comprising a protective cover, the protective cover comprising a passage and a plurality of gaskets, wherein the protective cover forms an airtight space within which the electrical connector is placed; the protective cover is a separate element, not related by shape to the housing of the tubular radiation emitter; the passage, at one of its ends, adheres circumferentially with its inner or outer surface to a first gasket disposed at one end of the tubular radiation emitter, and, at its other end, adheres circumferentially with its inner or outer surface to a second gasket; and the second gasket adheres to an insulation of a power cord. The device is applicable to outdoor tubular emitters of visible, ultraviolet, and infrared radiation, etc., in high moisture and/or high dust conditions.