The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 2002
Filed:
Jun. 09, 2000
Toshiba Lighting & Technology Corporation, Tokyo, JP;
Abstract
A high-intensity discharge lamp lighting device includes a high-intensity discharge lamp containing a light-transmissive discharge enclosure having an envelope defining a discharge space and a hollow member having an inner diameter smaller than the envelope, an elongate electrode being inserted into the hollow member of the light-transmissive discharge enclosure in leaving a narrow gap from the inner wall of the hollow member and having leading end protruding into the hollow member of the light-transmissive discharge enclosure, a lead-conductor having a leading end coupled to an base end of the electrode, a middle portion attached to the light-transmissive discharge enclosure and a base end exposing outward from the light-transmissive discharge enclosure, and discharge agent including at least neon and argon and filled into the light-transmissive discharge enclosure, and lighting circuit means having a load characteristics continuous from a secondary open-circuit voltage to a secondary short-circuit current for lighting the high-intensity discharge lamp at a high-frequency.