Light unit

A light unit having a concave reflector that is provided with an exit opening, a neck and an axis, the reflector surrounding a light source that extends longitudinally in the axial direction and is fitted with a bulb, the light source being surrounded at a spacing by an outer tube, the outer tube having a first end, adjacent to the neck, and a second end, adjacent to the exit opening, the outer tube being connected to the neck in the vicinity of the first end, the outer tube having, at least in the vicinity of the second end, an inside diameter that is loosely adapted to the diameter of the bulb at the exit-side end thereof, there being anchored on the outer tube at least two suitably shaped spring clips that have two limbs and thereby clasp the end of the outer tube, wherein the inner limb of the spring clips is respectively bent inward such that it touches the bulb of the light source, the spring clips being arranged distributed on the circumference of the outer tube so widely spaced apart from one another that they act with a centering effect on the bulb.