| 摘要 |
PROBLEM TO BE SOLVED: To enable a driver to confirm an image of a guide map and confirm an object ahead in running in parallel with the same visual line during running of a vehicle. SOLUTION: In this car navigation data projector 1, a light beam data 3 is transmitted from the car navigation data projector 1 to a wind shield 4 of the vehicle or a light beam control filter screen 2 provided on the wind shield 4 to project a guide map and display the same, whereby the guide map and an object ahead in running can be confirmed without turning the driver's eyes away from the map or the object to be useful for safe driving.
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