Bicycle single-wire lighting system with steady-flashing-reflect

Details Bicycle single-wire lighting system with steady-flashing-reflect Bicycle single-wire lighting system with steady-flashing-reflect

1989-08-31

1991-05-14

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Special application

315179, 362 72, 362227, H01K 700, H05B 4114

Patent

active

050159186

ABSTRACT:
Red LEDs having sufficient brightness and efficiency are employed for a bicycle tail lamp. A xenon strobe provides extended visibility over the steady red LED beam, identifiable as a vehicle tail lamp; dispersed high intensity flashes of the strobe may be seen directly or observed as reflections from the surroundings. The flash is powered from the difference between the supply potential and that required by the LEDs so the current through the LEDs is controlled without wasting power or adding unproductive circuitry. These elements are located in a retro-reflector similar to that in common use on bicycles to form a warning device that is small, easy to mount, with an uncomplicated electrical hookup; a simplified parallel connection scheme needs only a single wire in addition to the metal bicycle frame. The system has the rechargeable battery and the generator substantially in parallel; generator power is used when the bicycle is in motion and battery power when stopped. The interconnecting wiring system assures the operation of the rear warning device from the generator should the headlamp be missing or disconnected with the rate of the omnidirectional flashes increased and is a partial substitute to the warning that the headlamp would normally provide.

REFERENCES:
patent: 3779629 (1973-12-01), Green
patent: 4323879 (1982-04-01), Kelley
patent: 4388559 (1983-06-01), Lefavour
David Sellers, "Reflectors and Reflective Materials", Bike Tech, Jun. 1985, vol. 4, No. 3, pp. 7-13.
Stanley Electric Co., 2-9-13, Nakameguro, Meguro-Ku, Tokyo, Japan.
Wesley Iversen, "Would You Believe LED Brake Lights", Electronics, Sep. 18, 1986, p. 36.

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