Vehicular travel guidance device, vehicular travel guidance method, and computer program

摘要

A vehicular travel guidance apparatus and method are provided. The apparatus includes a map image display unit that displays a map image on a display device and a maximum energy amount acquisition unit that acquires a maximum charging energy amount of an in-vehicle battery. The apparatus further includes a charging facility information acquisition unit that acquires information regarding a charging facility capable of charging the in-vehicle battery. Also included is a travelable area acquisition unit that acquires a travelable area, within which the vehicle is able to travel from the charging facility by consuming an energy amount corresponding to a predetermined percentage of the maximum charging energy amount. The apparatus also includes a display mode change unit that varies a display mode of the map image based on the acquired travelable area.

主权项

1. A vehicular travel guidance device comprising:
a map image display unit that displays a map image on a display device; a maximum energy amount acquisition unit that acquires an existing charging energy amount of an in-vehicle battery of a vehicle that has a drive motor as a drive source, the drive motor being driven by energy stored in the in-vehicle battery; a charging facility information acquisition unit that acquires information regarding a charging facility capable of charging the in-vehicle battery; a travelable area acquisition unit that, based on the existing charging energy amount of the vehicle acquired by the maximum energy amount acquisition unit and the information regarding the charging facility acquired by the charging facility information acquisition unit, acquires a travelable area, within which the vehicle is able to travel from the charging facility by consuming an energy amount corresponding to a predetermined percentage of the existing charging energy amount that is less than an existing charging energy amount; and a display mode change unit that varies a display mode of the map image based on the acquired travelable area, wherein the travelable area is highlighted and displayed around the charging facility.