COMPACT HID LAMP WITH MULTIPLE PROTECTIVE ENVELOPES

摘要

A High Intensity Discharge (HID) lamp (100) comprised of a discharge chamber (130) disposed within an anti-oxidation envelope (120) and protected by a shroud (110). The shroud encloses the anti-oxidation envelope and thereby the discharge chamber to prevent the emission of fragments in the event that the discharge chamber fails. The shroud is positioned around the anti-oxidation envelope by means of a compressed spring (170) at one end of the envelope tensioned against a collar (160) attaching the other end of the envelope to a base of the lamp.