Patent ID: 9592762
Date: 2017-03-14
CPC Classifications: B60Q,F21S

Claim:
1. A vehicle driving assistance apparatus installed in a vehicle and configured to display a predetermined light pattern on a road surface around an own vehicle to enable a driver of the own vehicle, a driver of another vehicle, a pedestrian, and an environmental condition detector to recognize the displayed light pattern, the vehicle driving assistance apparatus comprising: a coherent light source; a road surface projection optical system configured to scan a light source beam to output a projection beam, and thereby project the light pattern on the road surface around the own vehicle, the light source beam being light emitted from the coherent light source; a road surface wet information retention section configured to retain information indicating whether the road surface around the own vehicle is wet; and a control circuit configured to control the coherent light source and the road surface projection optical system, the control circuit being configured to stop the output of the projection beam during a period in which the road surface wet information retention section retains information indicating that the road surface around the own vehicle is wet, the projection beam entering the road surface around the own vehicle at a shallow angle, and projecting the light pattern toward a road surface near a boundary of a traveling lane where the own vehicle is traveling.