A solid-state lamp has a base formed to be received into a socket, and the base has a retainer receptacle formed therein. An axially extending support is fitted into the base. The support is formed of an electrically conductive, heat-sinking material and has a retainer engaging the retainer receptacle....http://www.google.de/patents/US6827469?utm_source=gb-gplus-sharePatent US6827469 - Solid-state automotive lamp
