US 4,908,560 AGranted

Vehicle cornering lamp system

AssigneeKoito Manufacturing Co., Ltd.

InventorsHiroki Shibata, Kazuki Takahashi, Keiichi Tajima, Takashi Kurita, Kiyoshi Wada, Kiyoshi Yamashita

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Abstract

In a vehicle cornering lamp system, a control signal having a pulse width corresponding to a steering angle is periodically produced, and the amount of position shift between the actual direction of illumination of the headlamps and the target direction of illumination determined from the steering angle is detected according to the control signal thus produced. An electric motor is driven to change the direction of illumination of the headlamps so that the amount of position shift becomes zero, that is, the direction of illumination of the headlamps is linearly changed with the electric motor while following the steering angle.

Claims3

Dependent claims

A vehicle cornering lamp system in which the direction of illumination of lamp means is changed in association with a steering-wheel turning operation, comprising:

control signal generating means for periodically generating a control signal having a pulse width corresponding to a steering angle;
position shift detecting means for detecting an amount of position shift between an actual direction of illumination of said lamp means and a target direction of illumination determined from said steering angle as indicated by said control signal provided by said control signal generating means;
an electric motor for setting said direction of illumination of said lamp means;
and
direction-of-illumination changing means for driving said electric motor to change said direction of illumination of said lamp means so that said amount of position shift becomes zero.

2 more elements

Dependencies are inferred from the claim text.