Twin beam type headlight device for motorcycle

DETAILED DESCRIPTION The present invention has been devised in order to solve the above problems, it is therefore an object of the present invention to provide a twin beam type headlight device for motorcycle, with which two lights can be turned on in the low-beam lighting mode so as to improve the visibility from the front and which can reduce the lights in diameter and hence reduce the area of the front projection of the cowling.
In order to achieve the above object, the present invention is configured as follows: In accordance with the first aspect of the present invention, a twin beam type headlight device for a motorcycle, having a cowling that covers the front part of the body and a pair of headlights arranged side by side on the left and right sides on the front panel of the cowling, is characterized in that one of the paired headlights is a double filament type headlight which is switchable between low and high beams; the other is a single filament type headlight dedicated for low beam only; and a lighting controller which activates the low beam filaments of both headlights in the low beam mode and which activates the high beam filament of the double filament type headlight and the low beam filament of the other headlight in high beam mode is provided.
In accordance with the second aspect of the present invention, the twin beam type headlight device for a motorcycle having the above first feature is characterized in that the lens openings of the twin beam headlights are formed in an approximately elliptic shape that has major and minor axes or having an approximately parallelogram shape.
In accordance with the third aspect of the present invention, the twin beam type headlight device for a motorcycle having the above first feature is characterized in that the left and right headlights are laid out with their major axes inclined upwards and sidewards from the central axis of the vehicle, forming a roughly open-V shaped arrangement and each headlight has an optical element for achieving the predetermined luminous intensity distribution