Infrared lamp with heat conductive cap assembly and fixture
AssigneeU.S. Philips Corporation
InventorsVictor Rosallie Notelteirs, Josephus Franciscus Rijckaert, Johannes Maria Jozef Ritzen
Life of this patent
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Abstract
An infrared tubular incandescent lamp provided with a cap assembly and current supply lead at each pinched end of the lamp vessel. The caps are not electrically conductive and are heat sinks. Each cap assembly includes a formed ceramic member enclosed by a cap with a good heat conductive mass embedded between each pinched lamp seal and its surrounding metal cap. A luminaire for this lamp is provided which contains means resiliently engaging the lamp cap so as to form a heat sink.
Claims6
An electric infra-red incandescent lamp which comprises a hermetically sealed lamp envelope, at least one extremity of said envelope being sealed by a pinch seal;
- a current lead through extending outside said pinch seal and said envelope;
- a current conductor connected outside said pinch to said current lead through;
- a metal sleeve surrounding in circumferentially spaced relation substantially all of the connection between said current lead through and said current conductor as well as said pinch seal;
- a mass of a readily heat-conducting material substantially filling all of the space between said pinch seal and the interior of said metal sleeve, an electrically insulating member cooperating with said sleeve at the end thereof remote from the lamp envelope, said member surrounding said connection and closing said sleeve.
Dependencies are inferred from the claim text.