Patent ID: 6570308
Filing Date: 2003-05-27
Classification: F21S

Abstract:
An electric lamp, which defines, an axis A, comprising:a bulb (1) having a luminous filament (4), a base (6) in which the bulb is fixed and having external contacts (10), and at least two power supply leads (3) which electrically conductively connect the luminous filament to the external contacts, wherein the base is structurally subdivided into an upper part (7), which retains the bulb, and a lower part (5) for external fastening, and the lower part having an outer edge which, with respect to the axis A, radially protrudes past the upper part and the portion of the lower part which protrudes past the upper part is embodied as a detent mechanism for the external fastening, and wherein the detent mechanism comprises a detent protrusion (20) located on the outside of the lower part of the base and facing inward, which is an integral component of the lower part of the base, and a spring (24; 31) located opposite the detent protrusion and cooperating with the detent protrusion and secured in the lower part of the base, the spring being operatively selectably coupled in detent fashion in a recess (14) on a reflector (11), the detent protrusion operatively selectably uncoupling the spring from the recess of the reflector.