System and apparatus for controlling rear indicator lights on a vehicle
DCFirst Claim
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1. A lighting control apparatus for a vehicle comprising:
- an turn signal input responsive to a turn indicator signal from said vehicle;
a tail light signal input responsive to a tail light signal from said vehicle;
an output signal, for providing electric current to a vehicle indicator lamp;
wherein a tail light signal alone produces a reduced current output signal;
a turn indicator signal without a tail light signal produces an alternating substantially full current/no current output signal; and
a turn indicator signal with a tail light signal produces an alternating substantially full current/reduced current output signal.
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Abstract
According to the present invention, a lighting control circuit is provided in which various logic gates, transistors and other smaller-scale circuit elements are combined. The circuit receives as inputs the control signals from the vehicle, including the left and right indicator signals, the brake signal and the tail light signal. Each of these signals is fed into a first bank of logic gates whose outputs are supplied to a second bank of logic gates, whose output is in turn supplied to two transistors, each connected to a separate single filament bulb, one for the left side of the vehicle and the other for the right side.
16 Citations
15 Claims
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1. A lighting control apparatus for a vehicle comprising:
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an turn signal input responsive to a turn indicator signal from said vehicle; a tail light signal input responsive to a tail light signal from said vehicle; an output signal, for providing electric current to a vehicle indicator lamp;
wherein a tail light signal alone produces a reduced current output signal;
a turn indicator signal without a tail light signal produces an alternating substantially full current/no current output signal; and
a turn indicator signal with a tail light signal produces an alternating substantially full current/reduced current output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A rear light signaling system for a vehicle, said vehicle including a braking signal, tail light signal, and a left and right turn indicator signals;
- said rear light signaling system comprising;
a left indicator lamp; a right indicator lamp; wherein said left indicator lamp is responsive to said braking signal, tail light signal and left turn signal as follows; said left indicator lamp is driven to a partial brightness by a tail light signal;
said left indicator lamp is driven to a full brightness by a brake light signal without a left turn indicator signal;
said left indicator lamp is driven in alternating full brightness and off by a left turn indicator signal without a tail light signal; and
said left indicator lamp is driven to alternating full brightness and partial brightness by a left turn indicator signal with a tail light signal; andwherein said right indicator lamp is responsive to said braking signal, tail light signal and right turn signal in an equivalent fashion to said left indicator lamp. - View Dependent Claims (12, 13)
- said rear light signaling system comprising;
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14. A vehicle including:
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two rear indicator lamps, a left and a right; a left-right turn indicator switch for producing separate left and right turn signals each comprising alternating ON/OFF current; a braking signal, produced when brakes on said vehicle are activated; a tail light signal, produced when running lights on said vehicle are activated; wherein said left rear indicator lamp is responsive to said left turn signal, braking signal, and tail light signal as follows; said left rear indicator lamp is driven to a partial brightness by a tail light signal;
said left rear indicator lamp is driven to a full brightness by a brake light signal without a left turn signal;
said left rear indicator lamp is driven in alternating full brightness and off by a left turn signal without a tail light signal; and
said left rear indicator lamp is driven to alternating full brightness and partial brightness by a left turn signal with a tail light signal; andwherein said right rear indicator lamp is responsive to said right turn signal, braking signal, and tail light signal in an equivalent fashion to said left rear indicator lamp. - View Dependent Claims (15)
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Specification