Lighting device

Details Lighting device Lighting device

2005-02-16

2008-10-07

Patel, Vip (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

Reexamination Certificate

active

07432643

ABSTRACT:
A lighting device of the present invention has a wire-shaped cathode provided along an axial direction, a phosphor-coated anode that opposes to the wire-shaped cathode in the axial direction and a vacuum sealing tube that vacuum-seals these cathode and anode, wherein the wire-shaped cathode has a wire and a carbon film provided on the entire circumference of this wire, and the phosphor-coated anode has an anode section and a phosphor section provided on this anode section.

REFERENCES:
patent: 5600200 (1997-02-01), Kumar et al.
patent: 6020677 (2000-02-01), Blanchet-Fincher et al.
patent: 10-265699 (1998-09-01), None
patent: WO 97/07531 (1997-02-01), None
patent: WO 01/09914 (2001-02-01), None
patent: WO 03/088308 (2003-10-01), None
European Search Report, issued in corresponding European Patent Application No. 05006039.1-2208, dated on Dec. 6, 2007.

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