Arc discharge lamp with spring-mounted arc tube and shroud

Details Arc discharge lamp with spring-mounted arc tube and shroud Arc discharge lamp with spring-mounted arc tube and shroud

H - Electricity

01

J

H01J 61/34 (2006.01) H01J 61/04 (2006.01)

Patent

CA 2099593

2099593 9210850 PCTABS00013 A metal halide arc discharge lamp includes an arc tube (14) and a light transmissive shroud (16) mounted within a lamp envelope (12). The arc tube (14) and the shroud (16) are mechanically supported within the lamp envelope by resilient spring members (102, 104, 106, 108). Since the support structure for the arc tube (14) and the shroud (16) is mechanically and electrically isolated from the lamp stem, leakage current between the support structure and the electrical inleads is eliminated, thereby reducing sodium loss from the arc tube (14) and extending the operating life of the lamp. The spring-mounted construction enables the lamp to withstand mechanical shock and vibration.

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