1. A map information display device for use in a navigation apparatus which displays map to assist a travelling of a moving object, said device comprising: a map data extracting means for extracting character data corresponding to characters from map data corresponding to the map; a map data converting means for converting the map data including no character data to a bird's-eye-view map data; a character data converting means for selecting designated character data from the extracted character data and for converting the character data other than the designated character data to bird's-eye-view character data; a combining means for combining the bird's-eye-view character data, the bird's-eye-view map data and the designated character data to produce combined birds-eye-view data; and a display means for displaying the map of bird's-eye-view using the combined bird's-eye-view data.