Patent ID: 7434953
Filing Date: 2008-10-14
Classification: F21L,F21V,F21Y,H02J

Abstract:
1. A battery operated portable fluorescent lamp, comprising: an elongated tubular housing having a first end, a midpoint and a second end, and further configured as a handle grip between the first end and the midpoint and configured as a substantially cylindrical lens between the midpoint and the second end, wherein the first end is adapted to couple to a battery pack and the lens is adapted to enclose a miniature fluorescent bulb; an electrical circuitry, enclosed within the handle grip and alternately operable from either a 120 VAC voltage source or a 12 VDC voltage source, the electrical circuitry including a feed forward converter circuit operating at approximately 50 KHz to convert 120 VAC to a DC supply voltage, a separate switching regulator battery charging circuit, and a push-pull converter fluorescent lamp ballast circuit having an output coupled to the fluorescent bulb enclosed within the lens; and a battery pack, coupled to the first end of the tubular housing and operable to simultaneously receive charging current from an output of the charging circuit and to deliver DC supply voltage to the fluorescent lamp ballast circuit without the occurrence of a net discharge of the battery pack.