JP2014066595A - Navigation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation apparatus capable of guiding a user up to a destination by intuitively and plainly showing a route to the user walking on the route at a branching point etc.SOLUTION: A route search section 21 searches a route from a present position detected by a present position detection section 11 to a destination set by the user through an operation section 16 while referring to a piece of map information stored in a map information storage 13. While guiding the user on a route based on a piece of route information searched by the route search section 21, when the present position gets closer to a preset guide point like a branching point in the route, the route guide section 22 causes a camera 18 to take images. Based on a posture (direction and inclination) of the apparatus detected by a posture detection section 12, the route guide section 22 draws a guide image for guiding the user to the destination on the taken image to display the same on a display section 15.

Description

  The present invention relates to a navigation device for guiding a user who is moving by walking to a set destination.

  In recent years, not only an in-vehicle navigation device for the purpose of route guidance of automobiles but also a navigation device for guiding a user who is moving by walking to a destination has been developed. In such a navigation device, the route set up to the destination is displayed together with the map information, and the route guidance of the pedestrian is performed.

  However, in such route guidance, even if an instruction such as turning left or right on the map is given, it may be difficult to understand which route the user must pass at a branch point such as an intersection. For this reason, a navigation device has been proposed in which enlarged maps and image data prepared in advance at a branching point such as an intersection are displayed so that the route to be selected by the user is not mistaken (for example, Patent Document 1). 2).

  In Patent Document 1, when it is determined that the current position is within a predetermined range, an image stored in advance is displayed on the display, and the destination position is determined by comparing with the surrounding scenery of the current position. An information terminal device that can be visually confirmed is disclosed.

  Further, in Patent Document 2, real image data is stored in association with position information, and the real image data is acquired and displayed based on the current position of the user, so that the user matches the surrounding scenery. A navigation system is disclosed in which the position can be easily confirmed by confirming this.

JP 2003-194567 A JP 2004-226140 A

  However, in the devices disclosed in the above-mentioned patent documents 1 and 2, since the display is performed based on images and photographed data prepared in advance, it does not always match the surrounding scenery that the user is currently viewing. there is a possibility.

  This is because the scenery that can be seen varies greatly depending on where the user stands and in which direction the user is facing. In particular, since pedestrians can go through various routes unlike cars, for example, when they can pass a wide area such as a scrambled intersection, simply displaying images prepared in advance There is a high possibility that the landscape and the image seen by the user do not match.

  In addition, in a downtown area or the like, there are many cases in which images prepared in advance and the actual surrounding scenery do not match because new buildings are built, shops are changed, or advertising billboards are frequently changed.

  Therefore, the present invention provides a navigation device capable of intuitively and easily showing a route that a user should travel at a guidance point such as a branch point when guiding a user who is moving by walking to a destination. The purpose is to provide.

In order to achieve the above object, a navigation device of the present invention includes a current position detecting means for detecting a current position,
Storage means for storing map information;
Route search means for searching for a route from the current position detected by the current position detection obtaining means to the set destination with reference to map information stored in the storage means;
Route guidance means for guiding the user to a destination based on the route information searched by the route search means;
An imaging unit for capturing an image;
A display for displaying an image;
Provided with a posture detection means for detecting the posture of the device;
The route guidance unit causes the imaging unit to capture an image when the current position approaches a preset guidance point in the route during route guidance, and is detected by the posture detection unit. Based on the posture of the device, a guidance display for guiding the user to the destination is drawn on the captured image and displayed on the display unit.

  In the present invention, when a user who is moving by walking is routed to a destination, if the user approaches a guidance point such as a branch point, an image of the surroundings is automatically captured by the imaging unit. The guidance display is drawn in the captured image and displayed on the display unit. Therefore, according to the present invention, the user can grasp the route that the user should travel by simply comparing the image on which the guidance display is drawn with the actual surrounding landscape. It can be shown clearly.

In the navigation device of the present invention, the posture detection means detects the orientation and inclination of the device as the posture of the device,
The route guidance unit causes the imaging unit to capture an image when the orientation and inclination of the apparatus detected by the posture detection unit are within a preset range, and guide display on the captured image Is drawn and displayed on the display unit, and when the orientation or inclination of the device detected by the posture detection means is not within a preset range, the guidance is given on the enlarged view drawn using the map information. The display may be superimposed and displayed on the display unit.

  According to the present invention, when the orientation or inclination of the device is not within the preset range, the navigation display is displayed by superimposing the guidance display on the enlarged view drawn using the map information. Even when the posture is such that an image suitable for drawing the guidance display cannot be captured, it is possible to indicate the route to be taken to the user.

  In the navigation device of the present invention, the route guidance unit displays an image on which the guidance display is drawn on the display unit, and then the direction or inclination detected by the posture detection unit changes by a predetermined amount or more. In this case, the image pickup unit may pick up an image again, and the guidance display may be redrawn on the picked-up image and displayed on the display unit.

  According to the present invention, when the orientation or inclination of the apparatus changes, the surrounding scenery is imaged again, and the guidance display is redrawn and displayed, so that the scenery actually seen by the user is displayed. It is possible to indicate a route to be followed in accordance with

In the navigation device of the present invention, the posture detection means detects the tilt of the device as the posture of the device,
The route guidance unit causes the imaging unit to capture an image and draws a guidance display on the captured image when the inclination of the device detected by the posture detection unit is within a preset range. If the inclination of the device detected by the posture detection means is not within a preset range, a guidance display is superimposed on the enlarged view drawn using the map information. May be displayed on the display unit.

  According to the present invention, when the tilt of the device is not within a preset range, the guidance display is superimposed on the enlarged view drawn using the map information, so the orientation of the navigation device However, even when the posture is such that an image suitable for drawing the guidance display cannot be taken, it is possible to indicate the route to be taken to the user.

  In the navigation device of the present invention, the route guidance unit displays an image on which the guidance display is drawn on the display unit, and then the inclination detected by the posture detection unit changes by a predetermined amount or more, An image may be captured again by the imaging unit, and a guidance display may be redrawn on the captured image and displayed on the display unit.

  According to the present invention, when the inclination of the apparatus changes, the surrounding landscape is imaged again, and the guidance display is redrawn and displayed, so that it matches the landscape actually seen by the user. It is possible to indicate the route to be followed.

  Furthermore, in the navigation device of the present invention, the route guidance unit displays an image on which the guidance display is drawn on the display unit, and then the current position detected by the current position detection unit has changed by a predetermined amount or more. In this case, the image capturing unit may capture an image again, and the guidance display may be redrawn on the captured image and displayed on the display unit.

  According to the present invention, when the position of the user changes, the surrounding landscape is imaged again, and the guidance display is redrawn and displayed, so that the landscape actually seen by the user is displayed. It is possible to indicate a route to be traveled together.

  Furthermore, in the navigation device of the present invention, when the moving image mode is set as the guidance mode by the image at the guidance point, the route guidance unit causes the imaging unit to continuously capture images at a constant interval, A guidance display may be drawn on each captured image and sequentially displayed on the display unit.

  ADVANTAGE OF THE INVENTION According to this invention, when carrying out route guidance to the destination to the user who is moving by walking, it becomes possible to show the route which a user should go at a guidance point such as a branch point intuitively and easily.

It is a block diagram which shows the structure of the navigation apparatus 10 of one Embodiment of this invention. It is a flowchart for demonstrating operation | movement until it starts route guidance in the navigation apparatus 10 of one Embodiment of this invention. It is a flowchart for demonstrating the route guidance process of step S104 shown in the flowchart of FIG. It is a flowchart for demonstrating the process of the enlarged view of step S203 shown in the flowchart of FIG. 3 (when a 3D gyro sensor is provided). It is a flowchart for demonstrating the process of the enlarged view of step S203 shown in the flowchart of FIG. 3 (when 3D gyro sensor is not provided). It is a figure for demonstrating a mode when an enlarged view display is performed in the navigation apparatus 10 of one Embodiment of this invention, when the attitude | position of an apparatus is in the setting range. It is a figure for demonstrating in detail the example of an enlarged view shown to FIG. 6 (B). It is a figure for demonstrating in detail the other example of the enlarged view based on the imaged image. It is a figure for demonstrating a mode when an enlarged view display is performed in the navigation apparatus 10 of one Embodiment of this invention when the attitude | position of an apparatus is out of a setting range.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a navigation apparatus 10 according to an embodiment of the present invention. The navigation apparatus 10 of this embodiment is a portable navigation apparatus for guiding a user who is moving by walking to a set destination.

  As shown in FIG. 1, the navigation device 10 of the present embodiment includes a current position detection unit 11, a posture detection unit 12, a map information storage unit 13, an audio output unit 14, a display unit 15, and an operation unit. 16, a storage unit 17, a camera (imaging unit) 18, and a control unit 19.

  The control unit 19 includes a processor including a CPU, a ROM, and a RAM (all not shown), executes predetermined processing based on a control program recorded in the ROM and RAM, and operates each unit of the navigation device 10. To control. In the present embodiment, the control unit 19 has been described as reading and executing the control program recorded in the ROM or RAM. However, the control program is stored in a storage medium such as a CD-ROM or DVD-ROM. Alternatively, it can be downloaded via the Internet wireless communication or the like and provided to the control unit 19.

  And the control part 19 implement | achieves the function structure of the route search part 21 and the route guidance part 22 by performing said control program.

  The current position detection unit 11 detects the current position and the traveling direction of the navigation device 10 and receives, for example, radio waves including time information and position information from three or more GPS satellites orbiting the earth. And a GPS (Global Positioning System) receiver that detects the current position by processing.

  The posture detection unit 12 detects the posture of the navigation device 10 using a 3D gyro sensor (3-axis gyro sensor) or a three-dimensional acceleration sensor. Specifically, the posture detection unit 12 detects the orientation and inclination of the apparatus based on the angular velocity detected by the 3D gyro sensor, or detects the inclination of the apparatus based on the acceleration detected by the three-dimensional acceleration sensor.

  Note that the current position detection unit 11 may include not only the GPS receiver but also the 3D gyro sensor and the three-dimensional acceleration sensor as described above, and the control unit 19 obtains the current position obtained by the GPS receiver. The position information may be supplemented using not only the position information but also acceleration and angular velocity detected by a 3D gyro sensor or a three-dimensional acceleration sensor.

  The map information storage unit 13 stores map information. This map information includes road data including information such as road type, number of lanes, and road width, facility data including information on the location, type, and name of facilities such as convenience stores and gas stations, coastlines, lakes , Topographic data including information such as river shape and administrative boundary information. It does not matter whether the road data of this map information is data for vehicles or data for pedestrians. Both may be stored, or only one of them may be stored.

  The route search unit 21 refers to the map information stored in the map information storage unit 13 for the route from the current position detected by the current position detection unit 11 to the destination set by the user via the operation unit 16. Explore. The Dijkstra method is known as a representative algorithm for searching for the optimum route from the current location to the destination. The optimum route may have various determination criteria depending on the needs of the user of the navigation device, and examples thereof include a route having the shortest required time, a route having the shortest route, and a route using the main road as much as possible.

  The route guidance unit 22 performs route guidance to the destination based on the current position information obtained by the current position detection unit 11 and the route information searched by the route search unit 21.

  The voice output unit 14 is configured by a speaker that outputs voice guidance for route guidance, a voice necessary for operation of the navigation device 10, a buzzer sound such as a warning, and the like.

  The display unit 15 displays a map image based on the map information stored in the map information storage unit 13, a route searched by the route search unit 21, a current position mark indicating the current position, and the like, and an input operation by the operation unit 16. For example, a liquid crystal panel. In addition, the display part 15 can also be provided with the function of the operation part 16 by using a touch panel.

  The operation unit 16 is operated by a user and used when inputting route search conditions such as a destination and a waypoint.

  The storage unit 17 stores various information such as the route searched by the route search unit 21 and the destination set via the operation unit 16, and is configured by a storage medium such as a hard disk or a flash memory. Note that the storage unit 17 does not need to have an independent configuration. For example, the RAM of the control unit 19 may be used as the storage unit 17.

  The camera 18 is an image capturing unit for capturing surrounding images, and specifically includes a CCD image sensor. The camera 18 is provided on the back side of the navigation device 10, and when the user holds the navigation device 10 in his / her hand and points in the traveling direction, the shooting direction matches the traveling direction. .

  The route guide unit 22 in the present embodiment displays an image to the camera 18 when the current position approaches a guide point such as a preset branch point in the route during route guidance. Based on the posture (orientation and inclination) of the apparatus detected by the posture detection unit 12, a guidance display for guiding the user to the destination is drawn on the captured image and displayed on the display unit 15. Let

  Here, the guidance display indicates a route that the user should take and is a line, an arrow, or a blinking dot sequence drawn on an image.

  The route guidance unit 22 causes the camera 18 to capture an image when the orientation and inclination of the device detected by the posture detection unit 12 are within a preset range, and is detected by the posture detection unit 12. If the orientation or inclination of the device is not within a preset range, a guidance display is superimposed on the enlarged view drawn using the map information in the map information storage unit 13 and displayed on the display unit 15.

  For example, when the orientation of the device detected by the posture detection unit 12 is within ± 15 degrees with respect to the traveling direction, it is determined that the device is within a preset range. That is, when the orientation of the device detected by the posture detection unit 12 is other than that, it is determined that an image capable of drawing a guidance display indicating the direction to proceed even if an image is captured by the camera 18 cannot be captured. Thus, imaging by the camera 18 is not performed.

  Further, for example, when the inclination of the apparatus detected by the posture detection unit 12 is in the horizontal direction or the depression angle (an angle lower than the horizontal direction), it is determined that it is within a preset range. That is, when the inclination of the device detected by the posture detection unit 12 is an elevation angle (an angle above the horizontal direction), it is determined that the image captured by the camera 18 does not include the ground and cannot draw a guidance display. Thus, imaging by the camera 18 is not performed.

  Furthermore, the route guidance unit 22 displays the image on which the guidance display is drawn on the display unit 15, and then changes the direction or inclination detected by the posture detection unit 12 to the camera 18 when the orientation or inclination changes by a predetermined amount or more. The image is picked up again, and the guidance display is redrawn on the picked up image and displayed on the display unit 15.

  Further, the route guidance unit 22 displays the image on which the guidance display is drawn on the display unit 15, and then changes the current position detected by the current position detection unit 11 by a predetermined amount or more with respect to the camera 18. The image is picked up again, and the guidance display is redrawn on the picked up image and displayed on the display unit 15.

  In the navigation device 10 of the present embodiment, when the orientation or inclination of the device changes or the current position of the user changes, the surrounding display is captured again, and the guidance display is redrawn and displayed. Therefore, it is possible to indicate a route to be followed in accordance with the scenery actually seen by the user.

  Furthermore, the route guidance unit 22 causes the camera 18 to continuously capture images at a predetermined interval when the moving image mode is set as a guidance mode using images at a guidance point such as a branch point. Each of the guidance displays is drawn on the display unit 15 and sequentially displayed on the display unit 15.

  Next, the operation of the navigation device 10 of this embodiment will be described in detail with reference to the drawings.

  First, the operation up to the start of route guidance in the navigation device 10 of this embodiment will be described with reference to the flowchart of FIG.

  First, current position information such as latitude / longitude information is acquired by the current position detector 11 (step S101). When the destination is set by the user via the operation unit 16 (step S102), the route search unit 21 performs a route search from the current location to the destination (step S103).

  When the route search to the destination is completed, the estimated arrival time and the searched route are displayed on the display unit 15 and the route guidance unit 22 starts route guidance for guiding the user to the destination. (Step S104).

  Next, the route guidance process of step S104 shown in the flowchart of FIG. 2 will be described with reference to the flowchart of FIG.

  First, when performing route guidance based on the route information searched by the route search unit 21, the route search guide unit 22 updates the current position and the map information displayed on the display unit 15 based on the set conditions. Is performed (step S201). Here, the set condition is, for example, every set time interval, when moved by a set distance, or when the posture change of the apparatus becomes a predetermined amount or more.

  And when a user moves on the route and the current position approaches a preset guide point, for example, when it reaches 10 m before the guide point, the route guide unit 22 displays an enlarged view. A route to be passed to the user is indicated (step S203). Details of the enlarged view display will be described later.

  Then, the route guidance unit 22 displays this enlarged view until the user finishes passing the guidance point (no in step S204), and when the user further moves and passes the guidance point (yes in step S204). ), The route guidance unit 22 stops the enlarged map display. Here, the condition for determining that the user has passed the guidance point is determined, for example, when the user is away from the guidance point by a predetermined distance.

  If the destination has been reached, the guidance is terminated (yes in step S205), and if it has not arrived (no in step S205), the process returns to step S201 to continue the route guidance.

  Next, the enlarged view display process of step S203 shown in the flowchart of FIG. 3 will be described with reference to the flowcharts of FIGS.

  Here, FIG. 4 shows processing when the posture detection unit 12 includes a 3D gyro sensor, and FIG. 5 shows processing when the posture detection unit 12 does not include a 3D gyro sensor.

  First, an enlarged view display process when the posture detection unit 12 is provided with a 3D gyro sensor will be described with reference to the flowchart of FIG.

  First, the route guidance unit 22 determines whether or not the orientation and inclination of the device detected by the posture detection unit 12 are within a preset range (step S301).

  If it is determined that the orientation and inclination of the device detected by the posture detection unit 12 are within a preset range (yes in step S301), the route guidance unit 22 activates the camera 18 and An image of the landscape is taken (step S302).

  Then, the route guide unit 22 draws a guidance display for guiding the user to the destination on the image captured by the camera 18 (step S303).

  Here, when drawing the guidance display on the image captured by the camera 18, which part of the captured landscape image passes using the information on the orientation and inclination of the device detected by the posture detection unit 12. A route to be identified is specified, and a line, an arrow, or a blinking point sequence is overlaid at the specified position.

  Then, the route guidance unit 22 displays the image on which the guidance display is drawn on the display screen of the display unit 15 as an enlarged view (step S304).

  Since the current position needs to be updated even when the enlarged view is displayed, the route guide unit 22 updates the current position based on the set condition (step S305). Here, the set condition is, for example, every set time interval or when the user has moved by a set distance.

  Then, the route guidance unit 22 determines whether or not the enlarged map displayed on the display unit 15 needs to be updated (step S306). If the displayed enlarged map needs to be updated, the process starts from step S301. The above process is repeated (yes in step S306).

  Here, when the displayed enlarged view needs to be updated, the direction or inclination detected by the posture detection unit 12 changes by a predetermined amount or the current position detected by the current position detection unit 11 is a predetermined amount. This is the case when the above changes.

  Furthermore, the case where the video mode is set as the guidance mode by the image at the guide point such as a branch point is included when the displayed enlarged view needs to be updated, and such a video mode is set. On the other hand, the displayed enlarged image is continuously updated at regular intervals.

  And when it determines with the direction or inclination of the apparatus detected by the attitude | position detection part 12 not being in the preset range (in step S301 no), the route guidance part 22 is stored in the map information storage part 13, for example An enlarged view is drawn using information such as the shape and attributes of the stored road (step S307).

  The enlarged view here is a representation of the appearance of an intersection or branching point as seen from the user's point of view by a line drawing or a three-dimensional view. It ’s like that.

  Then, the route guide unit 22 superimposes the guidance display on the drawn enlarged view (step S308), and displays the enlarged view on which the guidance display is superimposed on the display screen of the display unit 15 (step S304).

  As described above, when the orientation or inclination of the apparatus is not within the set range, the enlarged map image based on the information in the map information storage unit 13 is used without using the surrounding landscape image captured by the camera 18. This is because it can be determined that the camera 18 is not facing the traveling direction or facing upward when the direction or inclination of the camera is not within the set range.

  Next, an enlarged view display process when the posture detection unit 12 is not provided with a 3D gyro sensor will be described with reference to the flowchart of FIG.

  In such a case, the posture detection unit 12 can detect the tilt of the device, but cannot detect the orientation of the device. However, since the user who is heading for the destination is generally likely to be facing the destination direction, the processing is performed on the assumption that the camera 18 of the navigation device 10 is directed toward the destination.

  The flowchart shown in FIG. 5 differs only in that the process of step S301 is replaced with step S301a in the flowchart shown in FIG. For this reason, only differences from the flowchart of FIG. 4 will be described here.

  When the posture detection unit 12 is not provided with the 3D gyro sensor, the route guidance unit 22 determines whether or not the inclination of the device detected by the posture detection unit 12 is within a preset range ( Step S301a).

  When it is determined that the inclination of the device detected by the posture detection unit 12 is within a preset range (yes in step S301a), the route guidance unit 22 activates the camera 18 and the surrounding landscape. Are picked up (step S302). If it is determined that the inclination of the device detected by the posture detection unit 12 is not within a preset range (no in step S301a), the route guidance unit 22 is stored in the map information storage unit 13. An enlarged view is drawn using information such as the shape and attributes of the existing road (step S307).

  And about the process after step S302, S307, since the process similar to the flowchart of FIG. 4 is performed, it abbreviate | omits about the description here.

  Note that the flowchart shown in FIG. 5 shows processing when the posture detection unit 12 is not equipped with the 3D gyro sensor. Therefore, in the processing in step S303, the route guidance unit 22 is operated by the posture detection unit 12. Based on only the detected tilt information, a process of drawing a guidance display on the captured image is performed.

  Next, a specific example of the enlarged image displayed on the display unit 15 of the navigation device 10 will be described with reference to FIGS.

  FIG. 6 is a diagram for explaining a situation when an enlarged view is displayed in the navigation device 10 of the present embodiment when the posture of the device is within the set range.

  FIG. 6A shows a state before the user approaches the guidance point, and route guidance based on map information is performed. Then, when the user approaches the guidance point, if the posture of the device is within the set range, as shown in FIG. 6B, a landscape image around the guidance point is picked up and guided to the picked-up image. The display is drawn and displayed.

  The example shown in FIG. 6B shows an example where a blinking point sequence is drawn as a guide display. Then, when the user passes through the guidance point, as shown in FIG. 6C, the display of the enlarged view is ended, and the route guidance based on the original map information is resumed.

  Next, an example of an enlarged view shown in FIG. 6B will be described in detail with reference to FIG.

  Referring to FIG. 7, if the posture of the apparatus is within the set range when the user approaches the guidance point, a landscape image is captured by the camera 18, and a guidance display is drawn on the captured image. I understand. Based on such guidance display, the user can easily grasp which direction he should proceed.

  FIG. 8 shows another example of an enlarged view based on a captured image. The example shown in FIG. 8 shows an example in which an arrow is drawn as a guidance display on a captured image.

  If the attitude of the navigation device 10 is out of the set range, an image of the guide point is not captured even if the camera 18 captures the image. In such a case, information on the shape and attributes of the road is used. The drawn enlarged view will be displayed. As described above, FIG. 9 shows a state in which an enlarged view is displayed in the navigation device 10 of the present embodiment when the posture of the device is out of the setting range.

  FIG. 9A shows a state before the user approaches the guidance point, and route guidance based on map information is performed. Even when the user approaches the guidance point, since the posture of the device is outside the setting range, as shown in FIG. 9B, information on the shape and attributes of the road is displayed corresponding to the guidance point. The guidance display is drawn and displayed in the enlarged image drawn by using. Then, when the user passes through the guidance point, as shown in FIG. 9C, the display of the enlarged view is ended and the route guidance based on the original map information is resumed.

  By performing such processing, in the navigation device 10 of the present embodiment, even when the posture of the device is not capable of capturing a guide point, an enlarged view drawn using road shape and attribute information is displayed. It becomes possible to perform route guidance for the user.

  As described above, in the navigation device 10 of the present embodiment, when a user who is moving by walking is routed to a destination, when the user approaches a guidance point such as a branch point, A surrounding image is automatically captured by the camera 18, and a guidance display is drawn in the captured image and displayed on the display unit 15. Therefore, according to the present embodiment, the user can grasp the route that the user should travel by simply comparing the image on which the guidance display is drawn with the actual surrounding landscape. It can be shown in a more understandable manner.

[Modification]
In the above embodiment, the posture detection unit 12 is described as detecting the orientation of the apparatus using a 3D gyro sensor, but detects the orientation of the apparatus using an electronic compass instead of the 3D gyro sensor. You may do it. In this case, the posture detection unit 12 detects the direction and inclination of the navigation device 10 using an electronic compass and a three-dimensional acceleration sensor.

DESCRIPTION OF SYMBOLS 10 Navigation apparatus 11 Present position detection part 12 Posture detection part 13 Map information storage part 14 Audio | voice output part 15 Display part 16 Operation part 17 Memory | storage part 18 Camera (imaging part)
19 Control unit 21 Route search unit 22 Route guidance unit

Claims (7)

Current position detecting means for detecting the current position;
Storage means for storing map information;
Route search means for searching for a route from the current position detected by the current position detection obtaining means to the set destination with reference to map information stored in the storage means;
Route guidance means for guiding the user to a destination based on the route information searched by the route search means;
An imaging unit for capturing an image;
A display for displaying an image;
Provided with a posture detection means for detecting the posture of the device;
The route guidance unit causes the imaging unit to capture an image when the current position approaches a preset guidance point in the route during route guidance, and is detected by the posture detection unit. A navigation device characterized in that a guidance display for guiding a user to a destination is drawn on a captured image and displayed on the display unit based on the posture of the device. The posture detection means detects the orientation and inclination of the device as the posture of the device,
The route guidance unit causes the imaging unit to capture an image when the orientation and inclination of the device detected by the posture detection unit are within a preset range, draws a guidance display, and displays the display When the orientation or inclination of the device detected by the posture detection means is not within a preset range, a guidance display is superimposed on the enlarged view drawn using the map information. The navigation device according to claim 1, wherein the navigation device is displayed on a display unit.   The route guidance unit displays an image on the imaging unit when the orientation or inclination detected by the posture detection unit changes by a predetermined amount or more after displaying the image on which the guidance display is drawn on the display unit. The navigation apparatus according to claim 2, wherein the navigation display is imaged again, and the guidance display is redrawn on the captured image and displayed on the display unit. The posture detection means detects the tilt of the device as the posture of the device,
The route guidance unit causes the imaging unit to capture an image and draws a guidance display on the captured image when the inclination of the device detected by the posture detection unit is within a preset range. If the inclination of the device detected by the posture detection means is not within a preset range, a guidance display is superimposed on the enlarged view drawn using the map information. The navigation device according to claim 1, wherein the navigation device is displayed on the display unit.   The route guidance unit displays an image on the imaging unit again when the inclination detected by the posture detection unit changes by a predetermined amount or more after displaying the image on which the guidance display is drawn on the display unit. The navigation apparatus according to claim 4, wherein the navigation apparatus captures an image, redraws the guidance display on the captured image, and displays the guidance display on the display unit.   When the current position detected by the current position detecting means changes by a predetermined amount or more after displaying the image on which the guidance display is drawn on the display unit, the route guidance unit displays an image on the imaging unit. The navigation apparatus according to any one of claims 1 to 5, wherein the navigation device is imaged again, and a guidance display is redrawn on the captured image and displayed on the display unit.   When the moving image mode is set as the guidance mode based on the image at the guidance point, the route guidance means causes the imaging unit to continuously capture images at regular intervals, and displays a guidance display on the captured images. The navigation device according to claim 1, wherein each of the navigation devices is drawn and sequentially displayed on the display unit.

Images