| 摘要 |
PROBLEM TO BE SOLVED: To maintain convenience of a user of an electric vehicle driving in conscious of a drivable distance, while reducing the psychological burden on the user.SOLUTION: A navigation device includes a route calculation part 37 for sequentially calculating a progress from a prediction value of a drivable distance allowed to a vehicle itself with a residual charge volume of a driving battery in the case of the vehicle itself traveling on a road ahead thereof in a travelling direction. Further, a map display control part 40 displays a light trace form in overlap on an electronic map so that the form extends toward the travelling direction of the vehicle itself therefrom as an origin, with a length of the light trace form in the vertical direction changed with the progress calculated by the route calculation part 37 within a range of constantly fitting in a screen of a display device 19 regardless of a scale of the electronic map and displayed. |
