1. A navigation device that includes a voice acquirer that acquires an inputted voice, a voice recognizer that carries out a voice recognition process on voice data acquired by said voice acquirer, and a position acquirer that acquires a position of a moving object, said navigation device providing route guidance on a basis of a result of the recognition by said voice recognizer, the position of the moving object which is acquired by said position acquirer, and map data, said navigation device comprising: a route guidance expression storage that stores route guidance expressions; a route guidance expression extractor that refers to said route guidance expression storage to extract a route guidance expression from the result of the recognition by said voice recognizer; a route guidance expression interpreter that interprets the route guidance expression extracted by said route guidance expression extractor to determine a concrete route guidance expression including a travelling direction, wherein the concrete route guidance expression does not include a destination; a route guidance expression information to be presented storage that stores visual information to be presented corresponding to said concrete route guidance expression while bringing the visual information to be presented into correspondence with said concrete route guidance expression; a route guidance expression information to be presented retriever that refers to said route guidance expression information to be presented storage to retrieve the corresponding visual information to be presented as a real-time visual representation of the concrete route guidance expression determined by said route guidance expression interpreter; and a presentation control outputter that outputs the visual information to be presented retrieved by said route guidance expression information to be presented retriever, wherein the real-time visual representation includes graphical data of an arrow or a pointer which points in the travelling direction included in the concrete route guidance expression.
1. A navigation device that includes a voice acquirer that acquires an inputted voice, a voice recognizer that carries out a voice recognition process on voice data acquired by said voice acquirer, and a position acquirer that acquires a position of a moving object, said navigation device providing route guidance on a basis of a result of the recognition by said voice recognizer, the position of the moving object which is acquired by said position acquirer, and map data, said navigation device comprising: a route guidance expression storage that stores route guidance expressions; a route guidance expression extractor that refers to said route guidance expression storage to extract a route guidance expression from the result of the recognition by said voice recognizer; a route guidance expression interpreter that interprets the route guidance expression extracted by said route guidance expression extractor to determine a concrete route guidance expression including a travelling direction, wherein the concrete route guidance expression does not include a destination; a route guidance expression information to be presented storage that stores visual information to be presented corresponding to said concrete route guidance expression while bringing the visual information to be presented into correspondence with said concrete route guidance expression; a route guidance expression information to be presented retriever that refers to said route guidance expression information to be presented storage to retrieve the corresponding visual information to be presented as a real-time visual representation of the concrete route guidance expression determined by said route guidance expression interpreter; and a presentation control outputter that outputs the visual information to be presented retrieved by said route guidance expression information to be presented retriever, wherein the real-time visual representation includes graphical data of an arrow or a pointer which points in the travelling direction included in the concrete route guidance expression. 16. The navigation device according to claim 1 , wherein said navigation device further includes a cancellation/amendment expression storage that stores expression used at a time of a cancellation or amendment, and a cancellation/amendment expression extractor that refers to said cancellation/amendment expression storage to extract an expression used for the cancellation or amendment from the result of the recognition by said voice recognizer, and wherein when said cancellation or amendment expression is extracted, said presentation control outputter outputs visual information to be presented corresponding to a route guidance expression extracted successively after said cancellation or amendment expression.