Patent ID: 7360918
Filing Date: 2008-04-22
Classification: F21S,F21W,H05B,Y10S

Abstract:
1. A high-efficiency solar-charging electric window candle, comprising: a base adapted to sit securely upon a window sill, said base including a footer formed with a battery compartment accessible through a lower hatch, and a riser protruding upwardly from said footer with at least one upwardly inclined plane, said riser also being formed with a compartment for enclosing a circuit board, and a vertically-oriented collar for supporting a candle body; a rechargeable battery mounted in the footer of said base; a candle body comprising a hollow cylinder inserted in the collar of said base riser, said candle body having a receptacle at an upper end; a bulb assembly comprising an LED mounted in a light-bulb housing including a glass enclosure attached to a base for insertion in the receptacle of said candle body; at least one solar cell mounted along the at least one inclined plane of said riser for recharging the battery from ambient light; a circuit board enclosed in said riser and including a first current pump circuit means for supplying a pulsed current to said LED from said battery to reduce current requirements of the LED without sacrificing brightness or aesthetics to provide battery-powered illumination of said LED within a range of from 24-48 hours without charging, and a second photosensing circuit connected to said solar cell for sensing ambient light levels there from; wherein said photosensing circuit automatically detects that ambient light levels have dropped below a threshold level, thereon illuminating said LED, and disconnecting said LED from the rechargeable battery when ambient light levels exceed said threshold level to allow said battery to recharge.