Back to results
US 6,417,624 B1Granted
Lighting system for vehicle
AssigneeKoito Manufacturing Co., Ltd.
InventorsMasayasu Ito, Hitoshi Takeda, Soichi Yagi, Shuji Matsuura, Akihiro Mochizuki, Hiroki Ishibashi, Tomoyuki Ichikawa
Life of this patent
Estimating the term…
Abstract
A lighting system provides an auxiliary lighting circuit for turning on an auxiliary light source in place of the discharge lamp if the abnormality in the lighting circuit is detected.
Claims17
A lighting system for a vehicle comprising:
- a plurality of discharge lamps;
- a lighting circuit for controlling lighting operations of the discharge lamps;
- an auxiliary lighting circuit for turning on an auxiliary light source in place of one of the discharge lamps when an abnormality in the lighting circuit is detected;
- and
- a direction control member for controlling a direction of an optical axis of the auxiliary light source;
- wherein when an abnormality in the lighting circuit of the discharge lamps is detected and the auxiliary light source is to be turned on, the direction of the optical axis of the auxiliary light source is turned downward by the direction control member.
3 more elements
A lighting system for a vehicle comprising:
- a plurality of discharge lamps;
- a lighting circuit for controlling lighting operations of the discharge lamps;
- an auxiliary lighting circuit for turning on an auxiliary light source in place of one of the discharge lamps when an abnormality in the lighting circuit is detected;
- and
- a direction control member for controlling a direction of an optical axis of the auxiliary light source;
- wherein when an abnormality in the lighting circuit of the discharge lamps is detected and the auxiliary light source is to be turned on, the direction of the optical axis of the auxiliary light source is turned upward by the direction control member.
3 more elements
A lighting system for a vehicle comprising:
- a plurality of discharge lamps;
- a lighting circuit for controlling lighting operations of the discharge lamps;
- and
- an auxiliary lighting circuit for turning on an auxiliary light source in place of one of the discharge lamps when an abnormality in the lighting circuit is detected;
- wherein said lighting circuit controls lighting operations of the discharge lamp at one side of the vehicle and the auxiliary light source at another side of the vehicle, while the auxiliary lighting circuit controls lighting operations of the auxiliary light source at the one side of the vehicle and the discharge lamp at another side of the vehicle.
2 more elements
A lighting system for a vehicle comprising:
- a plurality of discharge lamps;
- a lighting circuit for controlling lighting operations of the discharge lamps;
- an auxiliary lighting circuit for turning on an auxiliary light source in place of one of the discharge lamps when an abnormality in the lighting circuit is detected;
- and
- a direction control member for controlling a direction of an optical axis of the auxiliary light source;
- wherein one of the discharge lamp is for high beam and another discharge lamp is for low beam;
- only when an abnormality is detected for both the low beam and the high beam discharge lamps such that they cannot be turned on, the direction of the optical axis of the auxiliary light source is turned downward by the direction control member, and the auxiliary light source is turned on.
4 more elements
Dependencies are inferred from the claim text.