Communications: electrical – Land vehicle alarms or indicators – External signal light system
Patent
1990-04-09
1992-05-05
Ng, Jin F.
Communications: electrical
Land vehicle alarms or indicators
External signal light system
340435, 340902, 340903, B60Q 144
Patent
active
051111829
ABSTRACT:
A vehicle braking action alarming apparatus includes: a general stop-lamp or high-mount stop-lamp having a light emitting element which includes a light emitting diode; an oscillator for generating a signal at a predetermined frequency; a driver for driving and illuminating the stop-lamp; a controller for applying an output from the oscillator to the driver when a brake switch of the vehicle is turned on; a photosensor mounted at the front of the vehicle for receiving light from the stop-lamp of another preceding vehicle; and a processor/driver unit for processing a signal from the photosensor which received the light from the preceding vehicle, and for driving a sound source for generating an audible alarm sound warning of a braking action in the preceding vehicle. The oscillator is timed so as to operate only during a brief initial period following the actuation of the brake switch, which period can be moderately prolonged for the audible alarm in the receiving processor/driver.
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patent: 4663609 (1987-05-01), Rosario
Ishikawa Kiyomitsu
Tanabe Toru
Ng Jin F.
Stanley Electric Co. Ltd.
Swarthout Brent A.
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