Abstract: A nightlight with an interchangeable design disk mounted on the front thereof. A casing has an illumination area in a front side thereof, and a light bulb illuminates the illumination area from within. The nightlight also includes an electric motor mounted in the casing that has a shaft that extends through the front side of the casing proximate to the illumination area. The design disk mounts on the shaft and rotates with the shaft when the motor is energized. The design disk has a diameter that causes the disk to cover the illumination area in the front side of the casing when the disk is mounted on the shaft. The design disk has a design thereon that is visible when viewed from the front side of the nightlight when the light bulb shines through the disk from the illumination area in the front side of the casing.

Abstract: An internal sleeve in a double-lamp socket includes a tubular socket having a through hole in middle periphery abutting a longitudinal slot in upper portion, a pair of hooks each facing a block plate on lower opposing peripheries to define a pair of gaps therebetween, a common contact plate disposed in an inlaid groove in an inner periphery, an internal sleeve disposed in an upper inlaid groove, a pair of first and second contact plates from a pair of electric wires respectively engaged within a concave of the internal sleeve and a lower inlaid groove in the socket and a pair of first and second lamps inserted into the top and the bottom of the socket each having a pair of lead-in wires respectively engaged with the common contact plate and the first and second contact plate. Wherein the first lamp has an inverse L-shaped stop plate engaged within the slot and the second lamp has a pair of L-shaped stop plates respectively engaged within the gaps. Thereby, a series circuit is constituted inside the socket.

Abstract: An ornamental tube used in a decorative lamp assembly for heating by heat energy from the lamp bulb to boil an organic solvent into a convection of bubbles is disclosed having a plastic tube body holding the organic solvent, a plastic bottom cap capped on the bottom open side of the tube body, a porous cushion mounted in the plastic bottom cap and adapted to absorb the organic solvent for heating by heat energy from the lamp bulb, and a spacer member mounted in the plastic bottom cap to seal the bottom open side of the tube body and to hold down the porous cushion in the plastic bottom cap, the spacer member having through holes for the passing of the organic solvent from the tube body to the porous cushion.