reference will now be made in detail to the preferred embodiments of the present invention , examples of which are illustrated in the accompanying drawings , wherein like reference numerals refer to like elements throughout . the preferred embodiment of the present invention is applied to a cellular phone with a camera that will be explained in accordance with the drawings . fig1 and fig2 show the external appearance of the cellular phone with the camera ( hereafter called “ cellular phone ”). the cellular phone is foldable type . fig1 and fig2 show the opened state of the cellular phone . the cellular phone 1 has a main unit 2 , a display section 3 is foldably fitted with the main unit 2 . the inside surface of the cellular phone 1 has an operating section 21 having a plurality of keys . the inside surface of the display section 3 has a display 31 . the outside surface of the display section 3 has a camera 32 which looks towards the outer direction . fig3 is a function block diagram of a navigation device which is incorporated the cellular phone 1 . in fig3 , symbol 21 is the operating section , symbol 31 is the display , symbol 32 is the camera . symbol 41 is a gps ( global positioning system ) antenna , symbol 42 is gps receiving circuit . symbol 43 is an electronic compass which detects the direction of the camera . symbol 44 is an access means which communicating with a navigation server 60 . symbol 50 is a control device . the camera 32 , the display 31 , the operating section 21 , the gps receiving circuit 42 , the electronic compass 43 and the access means 44 are respectively connected to the control device 50 . the destination is set by operating the operating section 21 . the gps receiving circuit 42 detects the present position of cellular phone 1 . the electronic compass detects the direction of the camera 32 . the navigation function is started , then the control device 50 receives the present position of the cellular phone 1 from the gps receiving circuit 42 . the control device 50 transmits the present position information of the cellular phone 1 to the navigation server 60 via the access means 44 if the destination is set by the user . the navigation server 60 calculates the route from the present location to the destination if the navigation server 60 received the destination and the present location of the cellular phone . the navigation server 60 transmits map data from the present location to the destination and the data indicating the route to the cellular phone 1 . the map data is sent by the navigation server 60 and the data indicating the route is received by the access means 44 and transmitted to the control device 50 . the control device 50 decides the traveling direction on the picture photographed by the camera 32 based on the map data received from the navigation server 60 , the data indicating the route , the information of the present location of the cellular phone received from the gps receiving circuit 42 and the direction of the camera 32 received from the electric compass 43 . in other words , the control device 50 recognizes the traveling direction from the present location based on the map data received from the navigation server 60 , the data indicating the route and the present location of the cellular phone 1 . the control device 50 recognizes the direction of the picture photographed by the camera 32 based on the direction of the camera detected by the electric compass 43 . the control device 50 decides the traveling direction on the photographed picture based on the traveling direction from the present location and the direction of the photographed picture . moreover , the control device 50 adds the indicator data indicating the traveling direction on the photographed picture to the photographed picture on the display 31 . the control device 50 merges the traveling direction on the picture to the photographed picture by the camera 32 . these operations are repeated within a predetermined period . therefore , the indicator data indicating the traveling direction on the photographed picture is updated . the photographed picture by the camera 32 is updated in real - time . the three - dimensional arrow is used as the indicator data showing the traveling direction . in the case that there is the corner within a predetermined distance from the present location on the route to destination , it is preferable that the arrow indicating the traveling direction on the photographed picture bends to correspond to the turning direction . moreover , in the case that the destination is within a predetermined distance from the present location , a mark indicating the destination is displayed at the position corresponding to the destination . fig4 shows the route to the destination and the example of displayed pictures on the display 2 at the points a , b and c on the route . fig4 shows the case where the direction of the camera 32 is the same with respect to the traveling direction . the picture ga shows the display example displayed on the display 2 in the case that the present location is point a . the picture gb shows the display example displayed on the display 2 in the case that the present location is point b . in the picture gb , a bending arrow corresponding to the turning point is used as the arrow indicating the traveling direction because there is a corner within the predetermined distance from the present location on the route to the present location of the cellular phone 1 . the picture gc shows the display example displayed on the display 2 in the case that the present location is point c . in the picture gc , the mark m indicating the destination is displayed because the present location of the cellular phone 1 is within the predetermined distance from the destination . the angle of the camera 32 to the horizontal plane is detected by the gyroscopic stabilizer or the angular rate sensor , then the display configuration of the arrow indicating the traveling direction may change according to the detected angle of the camera 32 to the horizontal plane . in particular , the three - dimensional arrow becomes parallel to the ground of the photographed picture displayed . for example , fig5 shows the display when the camera 32 in the horizontal plane ; that is , fig5 shows an example of the three - dimensional arrow when the camera 32 faces the horizontal direction . fig6 shows an example of the three - dimensional arrow when the camera 32 faces downward towards the horizontal plane . in the embodiment above , the calculation of the route from the present location to the destination is conducted by the navigation server 60 , but the control device 50 of the cellular phone 1 may calculate the route from the present location to the destination . in this case , the cellular phone 1 has a storing means storing the map data instead of the access means 44 . nonvolatile memory , a removable disk , etc . is used as the storing means . the control device 50 receives the map data from the present location to the destination from the storing means , then the control device 50 calculates the route from the present location to the destination based on the received map data . in the embodiment above , the direction of the camera 32 is detected by the electric compass 43 . but , the moving direction of the cellular phone 1 may instead be calculated based on the present location information at a time point and comparing this present location information with location information from a different time point . the direction of the camera 32 may then be the calculated based on moving direction of the cellular phone 1 . in the embodiment above , the indicator showing the traveling direction is an arrow , but the indicator may be an indicator other than an arrow . for example , fig7 shows some blinking marks q displayed with some interval in the traveling direction . the blinking of these marks may shift in sequence in the traveling direction . although a few preferred embodiments of the present invention have been shown and described , it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention , the scope of which is defined in the appended claims and their equivalents .