Headlamp device with swivel control for a vehicle

Details Headlamp device with swivel control for a vehicle Headlamp device with swivel control for a vehicle

2007-04-17

2007-04-17

O'Shea, Sandra (Department: 2875)

Illumination

Supported by vehicle structure

Condition responsive

C362S418000, C362S512000

Reexamination Certificate

active

10979465

ABSTRACT:
Front viewability during turning may be enhanced by a headlamp device for a vehicle arranged to perform swivel control. The headlamp device is arranged so that when a vehicle2is turning around a right curve with low beam, the vehicle velocity V and the estimated horizontal G value are used to calculate the curve turning radius R, which is then used together with the vehicle velocity R to calculate the driver viewing point angle θ to which the leftward deviation β of the highest light intensity position in the light distribution pattern PL for low beam is added to calculate the target swivel angle α on the basis of which the lighting fixture unit of the headlamp10R is swung over the target swivel angle α so that light beam is emitted toward a region surrounding the driver viewing point EP on the road ahead of the vehicle in the forward direction. In this arrangement, the driver viewing point angle θ can be calculated using only from the vehicle velocity data as a parameter without using steering angle data, making it possible to simplify the operation for swivel control and to eliminate the need to use a steering angle sensor.

REFERENCES:
patent: 5526242 (1996-06-01), Takahashi et al.
patent: 6010237 (2000-01-01), Gotou
patent: 7053762 (2006-05-01), Sakai
patent: 2003/0067762 (2003-04-01), Fukawa
patent: 2003-123514 (2003-04-01), None

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