| 摘要 |
A headlight unit (13L, 13R) for use in a vehicle (10) that leans into turn includes a headlight light source (13La, 13Lb, 13Lc, 13Ra, 13Rb, 13Rc). When the vehicle is in an upright state, an illumination range of the headlight light source is partially or entirely contained in one side of the vehicle with respect to a width direction of the vehicle. The brightness of the headlight light source changes in accordance with a lean angle of the vehicle. When the lean angle of the vehicle leaning to the one side with respect to the width direction of the vehicle takes a reference value that is set for the headlight light source, the headlight light source lights up with a first brightness, and when the lean angle of the vehicle changes from the reference value to an upper value that is greater than the reference value, the brightness of the headlight light source changes from the first brightness to a second brightness that is higher than the first brightness. |
