Navigation device and route retrieving device

1. A navigation device, comprising:

a display device;

a route search device which searches a route based upon a departure location, an enroute location, and a destination location which have been inputted;

a display control device which displays a map and an enroute location addition screen for addition of an enroute location upon the display device; and

an enroute location addition device which adds an enroute location with the enroute location addition screen which is being displayed upon the display device, the enroute location addition screen including a display which shows a departure location, a display which shows a destination location, and a display of a plurality of enroute location addition fields between the display which shows the departure location and the display which shows the destination location;

a designation device which designates a specified around point upon the map;

a selection device which selects any one of a plurality of enroute location addition fields which are provided upon the enroute location addition screen; and

an addition control device which adds the specified around point which has been designated by the designation device to the enroute location addition field which has been selected by the selection device, with the map and the enroute location addition screen being displayed upon the display device.

2. A navigation device according to claim 1 , further comprising:

a map scale change designation device which designates scale change of the map; and

a scale change device which changes the scale of the map which is being displayed upon the display device, when scale change designation has been performed by the map scale change designation device while the map and the enroute location addition screen are being displayed upon the display device.

3. A navigation device, comprising:

a display device:

a route search device which searches a route based upon a departure location, an enroute location, and a destination location which have been imputed;

a display control device which displays a map and an enroute location addition screen for addition of an enroute location upon the display device;

an enroute location addition device which adds an enroute location with the enroute location addition screen which is being displayed upon the display device; and

a designation device which designates a specified ground point upon the map, wherein:

the enroute location addition screen includes a display which shows a departure location, a display which shows a destination location, and a display of a plurality of enroute location addition fields between the display which shows the departure location and the display which shows the destination location; and

the display control device, along with displaying the map upon the display device, before displaying the enroute location addition screen, displays a display screen which inquires whether the ground point which has been designated by the designation device is to be a destination location or an enroute location, and displays the enroute location addition screen when it has been selected to be an enroute location.