초록 ▼

A display apparatus (20) includes a blower (44) which provides a pressurized flow of air to lower air inlet openings of tubular nozzles (35) which protrude upwardly from a collection platform (21) to thus propel lightweight beads (56) from an upper bead discharge opening of a bore (41) through each

A display apparatus (20) includes a blower (44) which provides a pressurized flow of air to lower air inlet openings of tubular nozzles (35) which protrude upwardly from a collection platform (21) to thus propel lightweight beads (56) from an upper bead discharge opening of a bore (41) through each nozzle into arc-shaped trajectories which simulate flowing water. Each nozzle (35) has a plurality of circumferentially spaced apart openings (58) through the cylindrical wall (57) of the nozzle, adjacent to the platform, for drawing into the bore of the nozzle by a venturi effect beads (56) which have fallen onto the platform. One or more illumination sources (63) spaced radially apart from the nozzles (35) illuminate the airborne beads (56).

대표청구항 ▼

1. An apparatus for producing a visual display of moving airborne beads, said apparatus comprising; a. at least a first tubular bead discharge nozzle, said nozzle having at least one air inlet opening at a first transversely disposed end thereof for receiving flowing pressurized air, at least one be

1. An apparatus for producing a visual display of moving airborne beads, said apparatus comprising; a. at least a first tubular bead discharge nozzle, said nozzle having at least one air inlet opening at a first transversely disposed end thereof for receiving flowing pressurized air, at least one bead inlet port in a longitudinally disposed wall of said nozzle and at least one bead discharge outlet opening at a second transversely disposed end of said nozzle for discharging beads into the air.b. a pressurized air source for providing pressurized air to said inlet opening of said bead discharge nozzle,c. a collection platform having a flat horizontally disposed upper surface for collecting beads which have been discharged into the air and subsequently fallen, and conveying said collected beads to said bead inlet port of said bead discharge nozzle solely in response to a venturi effect which cause transversely disposed air-flow into said bead inlet port resulting from longitudinal air-flow through said bead discharge nozzle, said bead discharge nozzle including a tubular body having disposed longitudinally therethrough a bore, a lower end opening of which comprises said air inlet opening, an upper end opening of which comprises said bead discharge outlet opening, and a bead inlet port comprising an aperture which penetrates a wall of said tubular body and communicates with said bore therethrough, said bead discharge nozzle protruding upwardly from said collection platform to thus position said bead inlet port at least partially above said upper surface of said platform, andd. an illumination source for illuminating airborne beads discharged from said bead discharge nozzle, said illumination source comprising; i a light emitter support platform fastened to said tubular body of said bead discharge nozzle, andii at least one electrically energizable light emitter mounted on said light emitter support platform. 2. The apparatus of claim 1 wherein said light emitter support platform is further defined as being fastened to an outer wall surface of said bead discharge nozzle. 3. The apparatus of claim 2 wherein said light emitter support platform is further defined as being located between said bead inlet opening and said bead discharge outlet opening of said tubular body. 4. The apparatus of claim 3 wherein said light emitter support platform is further defined as including a hollow cup-shaped shell which fits coaxially over said tubular body of said bead discharge nozzle. 5. The apparatus of claim 4 wherein said light emitter support platform is further defined as including, a. an annular ring-shaped base which terminates a lower end of said cylindrical cup-shaped shell, said base having a central coaxial bore which receives therethrough and is fixed with respect to an upper longitudinally disposed part of said bead discharge nozzle,b. a plurality of circumferentially spaced apart light sources mounted to said annular ring-shaped base wall of said cylindrical cup-shaped shell, said light source producing upwardly directed beams of light when energized, andc. a bead blocking screen located above said light sources to prevent beads from accumulating thereon. 6. The apparatus of claim 5 wherein said bead blocking screen includes a tapered shell which has a lower base rim fixed to an upper rim of said cylindrical cup-shaped body, and an upper rim of smaller diameter than said base rim fixed to an outer surface of said bead discharge nozzle. 7. The apparatus of claim 6 wherein said tapered shell has a frusto-conical shape. 8. The apparatus of claim 6 wherein said screen is further defined as having a mesh construction having mesh openings therethrough which are of a smaller diameter than said beads. 9. The apparatus of claim 6 wherein said screen is further defined as being made of a thin light transmissive material. 10. The apparatus of claim 1 further including electronic control circuitry for individually varying at least one of intensity and color of said light sources in response to stimuli signals comprising at least one of ambient sounds, external electronic control signals, and pre-programmed control signals. 11. The apparatus of claim 10 wherein said electronic control circuitry is further defined as including circuit elements for pulsing said light sources on and off in response to said stimuli signals in a frequency range effective in stroboscopically illuminated airborne beads. 12. The apparatus of claim 11 wherein said frequency range extends from about 1 cycle per second to about 30 cycles per second. 13. The apparatus of claim 10 wherein said electronic control circuitry includes circuitry for varying the output air flow rate from said pressurized air source in response to said stimuli signals. 14. The apparatus of claim 13 wherein said electronic control circuitry includes Pulse Width Modulation (PWM) circuitry for varying at least one of the intensity of said illumination sources and said flow rate of said pressurized air source. 15. The apparatus of claim 14 wherein said electronic control circuitry is further defined as including a micro-controller. 16. The apparatus of claim 15 wherein said pre-programmed control signals reside in electronic memory operatively interconnected with said micro-controller.