Electric lamp and discharge devices: systems – With radiant energy sensitive control means
Patent
1989-04-13
1991-04-30
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
With radiant energy sensitive control means
315152, 40465, 362183, 362812, H05B 3702, H05B 4136
Patent
active
050121600
ABSTRACT:
A display assembly particularly for the point-of-purchase field utilizes a light source to power the display. A solar cell is electrically connected, through a simple flashing circuit, to an array of light emitting diodes (LEDs). The diodes have a current usage of about 2 ma or less; e.g., they may be double heterojunction AlGaAs/GaAs material. The circuit has a current drain of about 0.1 ma or less. The solar cell may be mounted between an artificial light source (such as a fluorescent bulb) and a surrounding metal housing by sheet material having an undulating (e.g., accordion) configuration. Transparent UV inhibited plastic film tape may attach the solar cell to a central undulation of the sheet material while magnets strips attach side edges of the sheet material to a metal housing, so that the solar cell is in close proximity to (e.g., touches) the light source.
REFERENCES:
patent: 4379324 (1983-04-01), Thompson
patent: 4384317 (1983-05-01), Stackpole
patent: 4596083 (1986-06-01), Thompson
Hewlett-Packard Purchasing Data for low current LED lamps.
Colorado Instruments, Inc.
LaRoche Eugene R.
Neyzari Ali
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