Vehicle lamp system, control device, illuminating state restriction method, and recording medium

A control device that controls a vehicle lamp that is able to form a high-beam light-distribution pattern in which a state of illuminating one or some illuminated regions is changed among illuminated regions that are separate in a vehicle-width direction ahead of an own vehicle, the control device comprising a controller that is able to control the vehicle lamp in such a manner as to restrict the state of illuminating the one or some illuminated regions, based on position information having a correlation with a position of a vehicle ahead,

• wherein the controller calculates a predicted position to which the vehicle ahead is predicted to move after a fixed time period from a reference time, based on the position information that is acquired anew at the reference time, an amount of change in position of the vehicle ahead calculated from pieces of the position information that is acquired during a predetermined time period before the reference time, and information on a travel road on which the vehicle ahead travels.

An illuminating state restriction method of controlling, based on position information having a correlation with a position of a vehicle ahead, a vehicle lamp that is able to form a high-beam light-distribution pattern in which a state of illuminating one or some illuminated regions is changed among illuminated regions that are separate in a vehicle-width direction ahead of an own vehicle, in such a manner as to restrict the state of illuminating the one or some illuminated regions, the illuminating state restriction method comprising a step of calculating a predicted position to which the vehicle ahead is predicted to move after a fixed time period from a reference time, based on the position information that is acquired anew at the reference time, an amount of change in position of the vehicle ahead calculated from pieces of the position information that is acquired during a predetermined time period before the reference time, and information on a travel road on which the vehicle ahead travels.

A computer-readable recording medium storing a program to be executed by a controller that controls, based on position information having a correlation with a position of a vehicle ahead, a vehicle lamp that is able to form a high-beam light-distribution pattern in which a state of illuminating one or some illuminated regions is changed among illuminated regions that are separate in a vehicle-width direction ahead of an own vehicle, in such a manner as to restrict the state of illuminating the one or some illuminated regions, the program characterized by causing the controller to perform a step of calculating a predicted position to which the vehicle ahead is predicted to move after a fixed time period from a reference time, based on the position information that is acquired anew at the reference time, an amount of change in position of the vehicle ahead calculated from pieces of the position information that is acquired during a predetermined time period before the reference time, and information on a travel road on which the vehicle ahead travels.