| 摘要 |
PROBLEM TO BE SOLVED: To improve convenience for users by automatically displaying the information of a facility to be maintained on the map screen of navigation the maintenance time has come. SOLUTION: A traveled distance detecting means 1 detects the traveled distance of a vehicle A. It is judged from a distance signal sent from the traveled distance detecting means 1 by a data processing means 5 whether the cumulative traveled distance of the vehicle A reaches a target traveled distance for maintenance set by a target traveled distance input means 2 or not. When the cumulative traveled distance does not reach the target traveled distance, the image of a navigation map 12 is displayed on a display means 6. When the cumulative traveled distance reaches the target traveled distance, a maintenance reporting screen expressing the arrival of maintenance timing and the contents of maintenance is displayed on the display means 6 and reported to the user. When the reporting screen is erased, the marker of a maintenance factory prepared by a mark information input means 3 and stored in a storage means 4 is projected matching with the screen of the navigation map. |
