US Patent 7401936 Light assembly adapted to an umbrella shank

A light assembly includes a circular base light emitting diodes mounted on the circuit board and electrically connected to a controlling chip, a circular rim mounted on a peripheral edge of the circular base, a transparent cover provided to securely engage with the circular rim to enclose the light emitting diodes and a clamping mechanism securely mounted on two opposed sides of the U shaped passage and having two rubber cushions oppositely movable relative to each other so that when an umbrella shank is extended into the U shaped passage and located between the two rubber cushions, the umbrella shank is securely sandwiched and the light emitting diodes are able to provide illumination.