Electric lamp assembly having a band connected to integrally formed metal pieces on a base

摘要

An electric lamp assembly comprising a lamp bulb a lamp base being essentially formed of a synthetic resin material and a retaining band being made of a metal. A plurality of weldable supporting pieces formed of a metal are integrally formed on the lamp base by insert forming process with the front end portions of the supporting pieces projecting out of the front end portion of the lamp base. A plurality of mounting openings are formed in the retaining band. Respective front end portions of the supporting pieces are inserted through the mounting openings in the retaining band and are welded to edges of the mounting openings respectively.