Patent ID: 6955441

Claim:
An ornamental tube fastened to the lampshade of a lamp and holding an organic solvent for heating into a boiling status by heat energy from a lamp bulb in said lampshade to produce a convection of bubbles below an inside space thereof, the ornamental tube comprising a plastic tube body holding said organic solvent and defining said space above said organic solvent, said plastic tube body admitting light and having an open bottom side, a plastic bottom cap capped on the open bottom side of said plastic tube body, said spacer member admitting light, a spacer member mounted inside said plastic bottom cap and sealed to the bottom open side of said tube body, said plastic bottom cap having a plurality of through holes through top and bottom sides thereof for guiding said organic solvent from said tube body to the inside of said plastic bottom cap for heating by heat from said lamp bulb, and a porous cushion mounted in between said plastic bottom cap and said spacer member and adapted to absorb said organic solvent for heating by heat energy from said lamp bulb, said porous cushion having a plurality of pores.