Warning system for detecting burned-out condition of automotive lamps
First Claim
1. A warning system for burned-out condition of first and second automotive lamp groups, each of which has at least one lamp, said system comprising:
- first switch means for allowing said first lamp group to be turned on;
second switch means for allowing said second lamp group to be turned on;
detecting means for monitoring said first and second lamp groups to produce a first signal when said at least one lamp of said first or second lamp groups is burned out, and for monitoring said first and second switch means to produce a second signal when said first switch means is ON and a third signal when said second switch means is ON;
discriminating means for receiving said first, second and third signals to determine the identity of a burned-out lamp group having at least one burned-out lamp on the basis of said first, second and third signals, to produce a fourth signal indicative of said burned-out lamp group; and
indicator means for receiving said fourth signal to indicate the identity of said burned-out lamp group.
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Accused Products
Abstract
A warning system for burned-out condition of automotive lamps including brake lamps, high-mount lamps and tail lamps, includes a detection circuit for monitoring the lamps to produce a first signal indicative of the presence of a burned-out lamp, and for monitoring a brake-lamp switch and a light switch to produce a second signal when the brake-lamp switch is ON and a third signal when the light switch is ON. The warning system also includes a control unit which receives the first, second and third signals and determines the identity of the lamp group including at least one burned-out lamp, and an indicator which indicates the identity of the lamp group including at least one burned-out lamp on the basis of the determination by the control unit.
20 Citations
3 Claims
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1. A warning system for burned-out condition of first and second automotive lamp groups, each of which has at least one lamp, said system comprising:
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first switch means for allowing said first lamp group to be turned on; second switch means for allowing said second lamp group to be turned on; detecting means for monitoring said first and second lamp groups to produce a first signal when said at least one lamp of said first or second lamp groups is burned out, and for monitoring said first and second switch means to produce a second signal when said first switch means is ON and a third signal when said second switch means is ON; discriminating means for receiving said first, second and third signals to determine the identity of a burned-out lamp group having at least one burned-out lamp on the basis of said first, second and third signals, to produce a fourth signal indicative of said burned-out lamp group; and indicator means for receiving said fourth signal to indicate the identity of said burned-out lamp group. - View Dependent Claims (2, 3)
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Specification