Automatic light control apparatus for vehicle
First Claim
1. In an automatic light control apparatus for a vehicle, for selectively turning ON and turning OFF at least one of tail lamps, side marker lamps and head lamps of the vehicle in accordance with the amount of external light, comprising first detecting means for detecting the light level externally of the vehicle;
- and first generating means for generating at least one first control signal responsive to the detected external light level for controlling operation of said vehicle lamps,the improvement comprising;
second detecting means for detecting an ON period of an illuminating light, external of said vehicle, and having a fluctuating light value;
second generating means responsive to said detecting of said ON period of said fluctuating light for generating at least one second control signal; and
control means responsive to said first and second control signals for controlling said lamps as a function of both said detected external light and said detected ON period of said fluctuating illuminating light.
1 Assignment
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Accused Products
Abstract
An automatic light control apparatus for a vehicle comprises an external light detector for selectively turning on and turning off at least one of tail lamps, side marker lamps and head lamps of a vehicle in accordance with the detected external light. A further detector is provided for detecting the ON period of an illuminating light having a fluctuating light value (for example generated by an A.C. voltage source), and the lamps are further controlled in accordance with the detected ON period of the fluctuating light value in conjunction with the signals generated by the external light detector, for controlling the illumination of the lamps of the vehicle. A further detector may be provided for detecting an abrupt change in the illumination level, and for controlling the vehicle lamps further in accordance with the detected abrupt change.
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Citations
11 Claims
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1. In an automatic light control apparatus for a vehicle, for selectively turning ON and turning OFF at least one of tail lamps, side marker lamps and head lamps of the vehicle in accordance with the amount of external light, comprising first detecting means for detecting the light level externally of the vehicle;
- and first generating means for generating at least one first control signal responsive to the detected external light level for controlling operation of said vehicle lamps,
the improvement comprising; second detecting means for detecting an ON period of an illuminating light, external of said vehicle, and having a fluctuating light value; second generating means responsive to said detecting of said ON period of said fluctuating light for generating at least one second control signal; and control means responsive to said first and second control signals for controlling said lamps as a function of both said detected external light and said detected ON period of said fluctuating illuminating light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- and first generating means for generating at least one first control signal responsive to the detected external light level for controlling operation of said vehicle lamps,
Specification