Patent ID: 6174070
Filing Date: 2001-01-16
Classification: F21L,F21S,F21V,F21W,F21Y,Y02B

Abstract:
A portable lighting instrument comprising:a. a casing having a bottom wall, side walls, and a top wall;b. a solar module including a number of solar cells which form an outer surface of said casing;c. an external power source terminal provided on said casing to receive a power from external power source through said terminal;d. at least one electrical double-layer capacitor arranged within said casing;e. means for selectively connecting said electrical double-layer capacitor to said solar cell module and said external power source terminal;f. a light source including a light emitting diode assembly provided on the top wall of said housing, said light emitting diode assembly being driven by power output from said electrical double-layer capacitor; andg. switch means for turning on and off said light source.