High-pressure gas discharge lamp
AssigneeKoninklijke Philips N.V.
InventorJuergen Gerhard Mertens
Life of this patent
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Abstract
A high-pressure gas discharge lamp unit 10 is described including a burner 14 with a discharge vessel 18. The burner 14 comprises electrical contact leads 22,24 and protrudes from and is fixed to a lamp cap housing 12, so that at least a first of the contact leads 22, 24 extends into the housing 12. A lamp operating circuit 50 is arranged within the housing 12, electrically connected to the electrical contact leads 22, 24. In order to allow a particularly compact lamp unit, the housing comprises a bottom plate 44 made out of a metal material to dissipate heat, which comprises an opening 68 into which a cap element 60 made out of an electrically insulating material is inserted to enclose a first electrical contact lead 22.
Claims12
A high-pressure gas discharge lamp unit including
- a burner with a discharge vessel, said burner comprising electrical contact leads,
- a lamp cap housing, where said burner protrudes from said housing and is fixed thereto, such that at least a first of said contact leads extends into said housing,
- where a lamp operating circuit is arranged within said housing electrically connected to said electrical contact leads,
- where said housing comprises a bottom plate made out of a metal material to dissipate heat,
- and where said bottom plate comprises an opening into which a cap element made out of an electrically insulating material is inserted to enclose said first contact lead.
the lamp unit according to one of the above claims, where
- said cap element comprises a first enclosing wall structure and a second enclosing wall structure arranged around said first enclosing wall structure.
A lamp cap housing for a high-pressure gas discharge lamp unit including
- a space for receiving a burner with a discharge vessel and electrical contact leads such that said burner protrudes from said housing,
- a space for receiving at least a first of said contact leads, such that it extends into said housing,
- a space for arranging a lamp operating circuit arranged within said housing to be electrically connected to said electrical contact leads,
- where said housing comprises a bottom plate made out of a metal material to dissipate heat,
- and where said bottom plate comprises an opening into which a cap element made out of an electrically insulating material is inserted to at least partially enclose said space for receiving said first electrical contact lead.
A method of manufacturing a high-pressure gas discharge lamp unit, including
- providing a burner with a discharge vessel said burner comprising electrical contact leads,
- fixing said burner to a lamp cap housing such that at least a first of said electrical contact leads is arranged within said housing,
- providing a lamp operating circuit within said housing and electrically connecting said lamp operating circuit to said electrical contact leads, where said housing comprises a bottom plate made out of a metal material to dissipate heat, and where said bottom cover comprises an opening,
- inserting into said opening a cap made out of an electrically insulating material to enclose said first electrical contact lead.
Dependencies are inferred from the claim text.