Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masanori Haba0
Hirokazu Fujii0
Date of Patent
October 7, 2008
0Patent Application Number
110583620
Date Filed
February 16, 2005
0Patent Primary Examiner
Patent 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.
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