A vehicle illumination system provided in a vehicle capable of traveling around a corner by inclining a vehicle body toward a turning direction includes: a headlamp mounted on a front portion of the vehicle; a communication lamp disposed on the vehicle body in a region adjacent to the head lamp so as to be visible from ahead of the vehicle; and an illumination control unit configured to change a lighting mode of the communication lamp depending on a state of the vehicle.

A headlight device includes a headlight and a control device. The headlight includes a plurality of light sources that is configured to light one or more left oblique areas located in the ahead-driving direction of the leaning vehicle on the left, one or more right oblique areas located in the ahead-driving direction of the leaning vehicle on the right, and one or more lower areas located in the ahead-driving direction of the leaning vehicle. The control device controls the headlight to light at least the left oblique areas and the right oblique areas based on adaptive lighting control. At least one of the left oblique areas and at least one of the right oblique areas that are lit based on the adaptive lighting control spread more outwardly in a left-right direction than any of the lower areas.

A headlight device includes a headlight and a control device. The headlight includes a plurality of light sources that is configured to light one or more left oblique areas located in the ahead-driving direction of the leaning vehicle on the left, one or more right oblique areas located in the ahead-driving direction of the leaning vehicle on the right, and one or more lower areas located in the ahead-driving direction of the leaning vehicle. The control device controls the headlight to light at least the left oblique areas and the right oblique areas based on adaptive lighting control. At least one of the left oblique areas and at least one of the right oblique areas that are lit based on the adaptive lighting control spread more outwardly in a left-right direction than any of the lower areas.

A control device of a leaning vehicle for controlling bright lighting and dim lighting for a plurality of oblique areas. When the leaning vehicle is upright, the control device controls the lighting by designating one or more of the plurality of oblique areas as in a brightly lit area to which adaptive lighting control is applied, and by designating the other oblique areas as in a dim area. The dim area includes an uppermost oblique area. When the leaning vehicle turns left or right, as a lean angle in a direction of the turn increases, the control device controls the lighting by designating a second uppermost oblique area that is located immediately below the uppermost oblique area in the up-down direction as in the brightly lit area, and moving the uppermost oblique area from the dim area to the brightly lit area.

A control device of a leaning vehicle for controlling bright lighting and dim lighting for a plurality of oblique areas. When the leaning vehicle is upright, the control device controls the lighting by designating one or more of the plurality of oblique areas as in a brightly lit area to which adaptive lighting control is applied, and by designating the other oblique areas as in a dim area. The dim area includes an uppermost oblique area. When the leaning vehicle turns left or right, as a lean angle in a direction of the turn increases, the control device controls the lighting by designating a second uppermost oblique area that is located immediately below the uppermost oblique area in the up-down direction as in the brightly lit area, and moving the uppermost oblique area from the dim area to the brightly lit area.

A headlight device including a headlight configured to emit light frontward of a leaning vehicle to form a lower light beam, an upper central light beam, an upper left light beam and an upper right light beam, and a control device that controls light emission from the headlight without any user operation. The control device forms both the upper left and the upper right light beams while the leaning vehicle is traveling straight, and reduces a brightness of the upper left and upper right light beams, responsive to a vehicle being illuminated by the upper left and upper right light beams respectively, and forms the upper left and upper right light beams respectively while the leaning vehicle is turning left and right, and maintains the brightness of the formed upper left or upper right light beam regardless of whether any vehicle is illuminated by the upper left or upper right light beam.

A headlight device including a headlight configured to emit light frontward of a leaning vehicle to form a lower light beam, an upper central light beam, an upper left light beam and an upper right light beam, and a control device that controls light emission from the headlight without any user operation. The control device forms both the upper left and the upper right light beams while the leaning vehicle is traveling straight, and reduces a brightness of the upper left and upper right light beams, responsive to a vehicle being illuminated by the upper left and upper right light beams respectively, and forms the upper left and upper right light beams respectively while the leaning vehicle is turning left and right, and maintains the brightness of the formed upper left or upper right light beam regardless of whether any vehicle is illuminated by the upper left or upper right light beam.

A vehicle system, in a vehicle that travels around a corner by tilting a vehicle body toward a turning direction, includes a light source, an optical member configured to form a predetermined light distribution pattern including a plurality of regions formed in parallel in one direction by irradiating a front side of a lamp with light from the light source, a sensor configured to detect a lamp position of an object outside the vehicle, and a control unit configured to determine an upper end position of the object based on the lamp position, and to adjust the predetermined light distribution pattern such that among the plurality of regions, a first region including the upper end position is not irradiated with the light.

A vehicle system, in a vehicle that travels around a corner by tilting a vehicle body toward a turning direction, includes a light source, an optical member configured to form a predetermined light distribution pattern including a plurality of regions formed in parallel in one direction by irradiating a front side of a lamp with light from the light source, a sensor configured to detect a lamp position of an object outside the vehicle, and a control unit configured to determine an upper end position of the object based on the lamp position, and to adjust the predetermined light distribution pattern such that among the plurality of regions, a first region including the upper end position is not irradiated with the light.

A bank angle of a vehicle can be accurately calculated using yaw axis data and roll axis data, and based on the calculated bank angle, vehicle illumination optics can be controlled to maintain a pattern of distributed light from the illumination optics to be generally horizontal. The calculated bank angle may be zeroed when the yaw axis data equals zero. The improved pattern of distributed light from the illumination optics illuminates a more natural field of view for the vehicle driver during a bank.