Patent ID: 6499854
Filing Date: 2002-12-31
Classification: F21S,F21Y

Abstract:
A decorative water lamp comprising:a base (10); a plate (14) rotatably mounted on the base (10); a projector (12) emitting light on the plate (14) and mounted on the base (10); a hollow inner shell (20) enclosing the base (10); a transparent and hollow outer shell (40) secured on the inner shell (20) for receiving fluid therein and having an aperture (421) defined therein to communicate with the inner shell (20); a wave generator received in the aperture (421) of the outer shell (40) for causing the fluid to be agitated to generate primary waves in the fluid, the wave generator is a membrane fixer (30) received in the aperture (421) of the outer shell (40) and composed of a fixing cap (31) having a through hole (311) defined therein, a threaded side wall (313) formed around the fixing cap (31); a spring (32) secured between the fixing cap (31) and the membrane (34); a fixing ring (33) sandwiched between the fixing cap (31) and the outer shell (40) and having a flange (331) inwardly formed and a threaded cutout (332) defined in the corner between the flange (331) and the fixing ring (33) to mate with the threaded side wall (313) of the fixing cap (31); a resilient membrane (34) secured on the fixing ring (33); and two pressure plates (341) firmly sandwiching the resilient membrane (34); and a cover (41) mounted on the outer shell (40), whereby white light emitted from the projector (12) and passing through the plate (14) is refracted irregularly by the agitated fluid 3.