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Replaceable lamp unit providing hermetic seal and fixed alignment for electric lamp contained therein and automobile headlight utilizing same

  • US 4,528,619 A
  • Filed: 06/24/1983
  • Issued: 07/09/1985
  • Est. Priority Date: 06/24/1983
  • Status: Expired due to Term
First Claim
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1. A replaceable lamp unit for being removably positioned with a rear opening of a reflector of an automobile headlight and for being electrically connected to an external connector forming part of electrical circuitry of said automobile, said replaceable lamp unit comprising:

  • an electrically insulative holder for being positioned within said rear opening of said reflector, said holder defining first and second cavities therein and a wall member located between said cavities, said wall member including at least two spaced apart substantially conical-shaped apertures therein;

    at least two substantially conical-shaped electrically conductive members, each of said electrically conductive members positioned within a respective one of said apertures in corresponding shape orientation within said wall member;

    at least two electrically conductive lug members located within said second cavity of said electrically insulative holder and adapted for being electrically connected to said external connector when said connector is positioned within said second cavity, each of said lug members having means for being mechanically connected to a respective one of said substantially conical-shaped electrically conductive members in such a manner so as to fixedly secure said conductive members within said substantially conical-shaped apertures in a sealed fashion and to provide an electrical connection between each of said lug members and said respective conductive members solely by said means; and

    an electric lamp securedly positioned within said insulative holder, said lamp including an envelope projecting from said holder and adapted for being oriented within said reflector when said holder is positioned within said rear opening thereof and at least two electrically conductive lead-in wires projecting from said envelope and extending substantially within said first cavity of said holder, each of said lead-in wires being electrically connected to a respective one of said substantially conical-shaped, electrically conductive members fixedly secured within said substantially conical-shaped apertures of said holder, said electrical connection between each of said electrically conductive members and said respective one of said lead-in wires providing both a hermetic seal therebetween and also serving to maintain said electric lamp in a substantially fixed position within said holder.

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