JP2011203069A - Navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device allowing a user to beforehand understand that one's own vehicle is entering a zone on a guidance route hard to escape therefrom over a long distance.SOLUTION: This navigation device includes an entry determination means 25 and a notice output means 26. It is determined by the determination means 25 whether or not the own vehicle is to enter a specific route zone on the guidance route which is considered hard for the own vehicle to escape therefrom over a prescribed distance at the nearest escape-allowing point on the front side in the traveling direction with respect to an own vehicle position allowing an escape from the guidance route in process of route guidance. The output means 26 outputs a notice to the effect that the own vehicles is entering the specific route zone in the event that an affirmative determination result is acquired by the determination means 25.

Description

  The present invention relates to a navigation device, and more particularly, to a navigation device suitable for performing route guidance according to a guidance route including a section that is difficult to escape over a long distance.

  Conventionally, in navigation devices, a route guidance (route guidance) according to a guidance route (guide route) to a destination is used to accurately present the direction in which the vehicle should travel to the user by display or voice guidance. Supporting driving to the ground was done.

  Conventionally, as a technique related to this type of navigation device, for example, a technique for notifying a user of a road section that is difficult to pass with an oncoming vehicle (see, for example, Patent Document 1), a front of a running road is known. Be careful while driving, such as a technique for notifying the user that it is a dead end (for example, see Patent Document 2) and a technique for notifying the user of a rockfall warning zone on the road (for example, see Patent Document 3). There has been proposed a technique for informing a user in advance of a point on a road that requires a vehicle.

JP 2004-245610 A JP-A-10-260054 Japanese Patent Laid-Open No. 10-82646

  By the way, depending on the destination and route search conditions, the guidance route may include a single road that does not have a point where a right or left turn or U-turn is possible over a long distance, such as a mountain road.

  And if you are traveling unexpectedly on a straight road that is included in such a guide route, even if you want to take a rest in the toilet or if you have a small amount of gasoline, turn right or left to escape from that single route. The U-turn cannot be performed, and there is a problem that driving with anxiety (for example, anxiety of engine stall) and pain (for example, fatigue and physiological pain) may be forced for a long time.

  In this regard, Patent Document 1 discloses a configuration for notifying a difficult passage section on a mountain road, but the difficult passage section reported in this configuration does not always have a right or left turn or a U-turn escape over a long distance. Since it does not necessarily correspond to a single road, it was insufficient as a means for reliably solving the problem in traveling on the single road described above.

  Therefore, the present invention has been made in view of such points, and by letting the user know in advance that the vehicle has entered a section on a guidance route that is difficult to escape over a long distance, It is intended to provide a navigation device that can give a user an opportunity to make a self-determination as to whether or not to drive immediately, and can alleviate anxiety and pain when driving in that section. is there.

  In order to achieve the above-described object, a navigation device according to the present invention stores a map data storage unit that stores map data, a vehicle position detection unit that detects a vehicle position, and a map data storage unit that stores the map data. A navigation apparatus comprising: route search means for searching for an optimum route to the destination based on the map data; and route guidance means for performing route guidance using the optimum route searched by the route search means as a guide route. The vehicle position at which the vehicle can escape from the guidance route based on the map data corresponding to the guidance route and the detection result of the vehicle position detection unit during route guidance by the route guidance unit. A specific path on the guidance route where the vehicle is considered difficult to escape over a predetermined distance at the nearest possible exit point on the front side in the direction of travel. An entry determination unit that determines whether or not to enter the section, and a warning that outputs a warning that the own vehicle enters the specific route section when a positive determination result is obtained by the entry determination unit Output means.

  And according to such a structure, when the own vehicle enters a specific route section at the nearest possible exit point on the front side in the traveling direction on the guidance route, a warning to that effect can be output. By allowing the user to know in advance that a specific route section is to be entered, it is possible to give the user an opportunity to make a self-determination as to whether or not to immediately travel on the specific route section. Can ease anxiety and pain when driving.

  In addition, the specific route section may be a route section in which a right or left turn for escaping from the section is impossible over the predetermined distance and a U-turn for escaping from the section is considered difficult. Good.

  According to such a configuration, the vehicle enters a route section in which it is impossible to make a right / left turn for escaping over the predetermined distance or more at the nearest evacuable point and it is difficult to make a U-turn for escaping. When doing so, the user can be made aware of this in advance.

  Furthermore, the warning output means may also notify the distance from the nearest possible exit point on the guidance route to the next possible exit point when outputting the warning.

  According to such a configuration, when the vehicle enters a specific route section at the nearest escapeable point, it travels along the guidance route from the nearest escapeable point together with that fact. Otherwise, the user can know in advance whether it is impossible to get out of the specific route section. Information suitable for pain relief can be provided to the user.

  Furthermore, when a positive determination result is obtained by the entry determination means, it is determined whether or not there is a resting place along the guidance route after the nearest possible exit point based on the map data. And when the warning means outputs a positive determination result, when the warning is output, the warning means determines the rest area from the nearest escapeable point. Notification of the rest area information including the distance up to may also be performed.

  According to such a configuration, when entering a specific route section at the nearest escapeable point, it is necessary to travel along the guidance route from the nearest escapeable point together with that fact. Since it is possible for the user to know in advance whether or not it is possible to take a break, the user is provided with information suitable for self-determination as to whether or not to immediately travel on a specific route section and to relieve pain when traveling on a specific route section. Can be provided.

  In addition, the warning means may perform a notification that the rest area does not exist when outputting the warning when a negative determination result is obtained by the rest place determination means. .

  And according to such a structure, when approaching a specific route section in the said nearest escape possible point, it can be made to grasp | ascertain beforehand that a user cannot take a break along a guidance route along with that. Therefore, it is possible to provide the user with an effective determination material for self-determination as to whether or not to travel immediately on a specific route section.

  Furthermore, when a positive determination result is obtained by the entry determination means, based on the map data, after extracting the nearest fuel supply station along the guide route after the nearest escape possible point, Based on the amount of fuel remaining in the vehicle and the distance from the vehicle position to the nearest fuel supply station, a fuel determination is made to determine whether the vehicle has sufficient fuel to the nearest fuel supply station. And when the fuel determination means obtains a negative determination result, the warning means outputs the warning that the fuel is low and the nearest escape point is the nearest Notification of the distance to the fuel supply station may also be performed.

  According to such a configuration, when entering a specific route section at the nearest possible escape point, it is possible to let the user know in advance that there is not enough fuel along with that fact. It is possible to provide the user with information suitable for self-determination as to whether or not to immediately travel along the route section and to relieve anxiety when traveling along the specific route section.

  Furthermore, the escape possible point may be an intersection on the guidance route.

  And according to such a structure, a suitable point can be selected as an escape possible point.

  According to the present invention, an opportunity to make a self-determination as to whether or not the vehicle should travel immediately by letting the user know in advance that the vehicle is entering a section on a guidance route that is difficult to escape over a long distance. Can be given to the user, and as a result, anxiety and pain when traveling in the section can be alleviated.

The block diagram which shows embodiment of the navigation apparatus which concerns on this invention Block diagram of the navigation device of FIG. The flowchart which shows embodiment of the navigation apparatus which concerns on this invention

  Hereinafter, an embodiment of a navigation device according to the present invention will be described with reference to FIGS. 1 to 3.

  As shown in FIG. 1, the navigation device 1 in this embodiment is roughly divided into a navigation main unit 2, a GPS receiver 3, an autonomous navigation sensor 4, an operation unit 5, and a display 6 connected to the navigation main unit 2. And the speaker 7.

  Here, the GPS receiver 3 receives GPS information (information on time and orbit) distributed from a GPS satellite (not shown), and outputs the received GPS information to the navigation main unit 2 side.

  The autonomous navigation sensor 4 detects the vehicle speed, acceleration (angular velocity), own vehicle direction, and the like of the host vehicle, and outputs the detection result to the navigation main unit 2 side. The autonomous navigation sensor 4 may be a vehicle speed sensor, a gyro sensor, or the like.

  Furthermore, the operation unit 5 can perform various operations on the navigation device 1 by inputting an operation signal corresponding to the operation content to the navigation main unit 2. The operation unit 5 may be a remote controller, a fixed switch, a touch panel of the display 6, a linear encoder, a rotary encoder, a voice input microphone, or the like.

  Next, the navigation main unit 2 will be described in detail. As shown in FIG. 1, the navigation main unit 2 includes a navigation CPU 10 connected to the system bus 8, a hard disk drive (HDD) 11 as map data storage means, a flash A memory 12, a RAM 14, a user interface (I / F) 15, an image interface (I / F) 16, and an audio interface (I / F) 17 are provided.

  Here, the navigation CPU 10 executes various functions of the navigation device 1 such as a vehicle position detection function, a map display function, a route search function, a route guidance function, and a search function.

  The hard disk drive 11 stores map data. The map data is from the lowest level (level 0) indicating the most detailed map to the highest level (for example, level 2) indicating the simplest map. Are managed in a hierarchical state for each of a plurality of levels.

  This map data includes road data, background data, route calculation data, and search data.

  Of these, road data is information that represents a road section as a link sandwiched between nodes. The link ID, the coordinates of the start / end nodes of the link, the road name, traffic conditions, width information, lane number information, and link information The intersection identification information for identifying whether or not the start / end node is an intersection is data associated with each other. Nodes other than the intersection function as shape change points indicating changes in the shape of the link. The intersection identification information may be the same information as the intersection identification flag shown in Patent Document 2. The link data is handled as being integrated into one between adjacent road sections as the management level of the map data becomes higher.

  In addition, the background data has basic data elements such as points, polylines, polygons, and text. The route calculation data includes road network data, and has basic data elements such as links, nodes, link costs, and traffic conditions. Further, the search data has POI information and the like indicating the address, postal code, and POI (Points Of Interest) attributes (position, name, address, type, etc.) as basic data elements.

  Further, the hard disk drive 11 stores an execution program for the navigation CPU 10.

  Furthermore, the flash memory 12 stores an execution program of the navigation CPU 10 that is read from the hard disk drive 11 by the navigation CPU 10 when the navigation device 1 is activated, and the stored execution program is stored in the navigation CPU 10. As a result, the various functions of the navigation device 1 are appropriately executed.

  The RAM 14 is used for temporarily storing various data such as processing results by the navigation CPU 10.

  Furthermore, an operation unit 5, a display 6, and a speaker 7 are connected to the user interface 15, the image interface 16, and the audio interface 17, respectively.

  Next, the navigation CPU 10 will be described in more detail. As shown in FIG. 2, the navigation CPU 10 has a vehicle position detection unit 20 as vehicle position detection means as one of its functional blocks. GPS information output from the GPS receiver 3 and detection results output from the autonomous navigation sensor 4 are input to the vehicle position detection unit 20. And the own vehicle position detection part 20 performs the satellite navigation which detects (positions) the own vehicle position as an absolute coordinate based on the GPS information input from the GPS receiver 3 side. In addition, the vehicle position detection unit 20 performs autonomous navigation based on the detection result input from the autonomous navigation sensor 4 side to detect the vehicle position as a relative position that is a change from the previous positioning position. It has become. Further, the vehicle position detection unit 20 uses the map data stored in the hard disk drive 11 to correct the vehicle position detected by satellite navigation or autonomous navigation to a position on the corresponding road in the map data. Map matching processing is performed. When the map matching process is properly performed, the own vehicle position detection unit 20 uses the own vehicle position after the map matching process as a final detection result.

  As shown in FIG. 2, the navigation CPU 10 has a map drawing unit 24 as one of its functional blocks. The map drawing unit 24 generates a map showing a predetermined area (region) based on the map data stored in the hard disk drive 11. The map drawing unit 24 displays the generated map on the display 6. This map includes a map indicating a predetermined area around the vehicle position detected by the vehicle position detection unit 20 as the predetermined area.

  Furthermore, as shown in FIG. 2, the navigation CPU 10 has a destination setting unit 21 as one of its functional blocks. The destination setting unit 21 displays various operation screens for setting a navigation destination on the display 6 and then responds to a user input operation using the operation unit 5 with respect to the displayed operation screen. The destination is set.

  Furthermore, as shown in FIG. 2, the navigation CPU 10 has a route search unit 22 as route search means as one of its functional blocks. The route search unit 22 is based on the route calculation data in the map data stored in the hard disk drive 11, and the destination set by the destination setting unit 21 from the vehicle position detected by the vehicle position detection unit 20. The optimum route according to the route search conditions set in advance is searched. The route search conditions include, for example, searching for a route that reaches the destination in the shortest time, searching for a route that reaches the destination in the shortest distance, searching for a route preferentially traveling on a general road, Alternatively, a condition such as searching for a route preferentially traveling on a wide road is included. These route search conditions may be set by default, or may be set by an input operation using the operation unit 5 by the user. The route search unit 22 presents the searched optimum route to the user as a guide route candidate by display on the display 6.

  As shown in FIG. 2, the navigation CPU 10 includes a route guidance unit 23 as route guidance means as one of its functional blocks. When an input operation using the operation unit 5 for setting the optimum route presented by the route search unit 22 is performed, the route guidance unit 23 sets the optimum route as the guidance route. ing. The setting of the guide route may be performed by storing information on the guide route, for example, link data in the RAM 14 or the like. The route guiding unit 23 starts route guidance according to the set guidance route after setting the guidance route. The route guidance is performed by displaying an enlarged view of the intersection on the display 6 or by outputting a voice for turning right and left at the intersection via the speaker 7.

  Furthermore, as shown in FIG. 2, the navigation CPU 10 has an entry determination unit 25 as an entry determination unit as one of its functional blocks. The approach determination unit 25 is configured to detect the vehicle position where the vehicle can escape from the guidance route based on the map data corresponding to the guidance route and the detection result of the vehicle position detection unit 20 during route guidance by the route guidance unit 23. It is determined whether or not the host vehicle enters the long-distance escape difficult section at the nearest escape possible point on the front side in the traveling direction.

  Here, the long-distance escape difficult section is a specific route section on the guidance route that is considered difficult to escape from the section over a predetermined distance. In other words, the long-distance escape difficult section is a specific route section on the guide route over a predetermined distance that is considered difficult to escape from the section.

  Further, the long-distance escape difficult section may be a path section in which a right or left turn for escaping from the section is impossible over a predetermined distance and a U-turn for escaping from the section is considered difficult. . In this case, for the fact that it is impossible to turn left or right, for example, based on the above-described intersection identification information, over the predetermined distance from the nearest possible exit point toward the front side in the traveling direction on the guidance route, This can be determined by the fact that the node corresponding to the intersection does not appear. In addition, regarding the difficulty of the U-turn, for example, based on the width information described above, the width of the road is increased over a predetermined distance from the nearest possible escape point to the front side in the traveling direction on the guidance route. It can be determined by continuously being less than a predetermined value (for example, 4 m). Furthermore, for the predetermined distance, various distances (for example, 10 km) may be set according to the concept.

  Furthermore, the nearest escape possible point may be a nearest intersection (an intersection on the guidance route) on the front side in the traveling direction with respect to the vehicle position.

  Such determination by the entry determination unit 25 is performed when the host vehicle passes through a possible exit point (may be an intersection) on the guidance route immediately before the nearest possible exit point. May be. However, the long distance escape difficult section may be detected in advance by the route search unit 22 or the route guide unit 23 when the route search unit 22 searches for a route or the route guide unit 23 sets a guide route. Good.

  Furthermore, as shown in FIG. 2, the navigation CPU 10 includes a warning output unit 26 as a warning output unit as one of its functional blocks. The warning output unit 26 is configured to output a warning to the effect that the host vehicle enters the long-distance escape difficult section when a positive determination result is obtained by the entry determination unit 25. The warning is output by at least one of voice guidance via the speaker 7 and display on the display 6.

  For example, the warning output unit 26 may perform voice guidance and / or display such as “a single road will continue for a while” as a warning.

  In the present embodiment, the warning output unit 26 also notifies the distance from the nearest escapeable point to the escapeable point on the next guidance route when outputting the warning. Yes.

  This notification may be, for example, voice guidance and / or display such as “the right turn point is 15 km ahead”. This notification example is accompanied by a notification of a driving method (right turn) according to route guidance at the next escapeable point of the nearest escapeable point, but the driving method at the next escapeable point is straight ahead. In some cases, the notification may simply be “The first intersection after a straight road is 15 km ahead”.

  Further, as shown in FIG. 2, the navigation CPU 10 has a rest place determination unit 27 as a rest place determination means as one of its functional blocks. When the advancing determination unit 25 obtains a positive determination result, the resting place determination unit 27 determines whether or not there is a resting place along the guidance route after the nearest exitable point. It has become. The determination by the resting place determination unit 27 is based on the search for surrounding facilities using the coordinates of each point (for example, node) on the guidance route as a search key based on the search data in the map data stored in the hard disk drive 11. Just do it. The rest area may be a convenience store, for example.

  In the present embodiment, when a positive determination result is obtained by the resting place determination unit 27, the warning output unit 26, when outputting a warning, from the nearest exitable point to the resting place. The information on the rest area including the distance is also notified. The rest area information other than the distance to the rest area can include the type and name of the rest area.

  For example, the warning output unit 26 may perform voice guidance and / or display such as “the nearest convenience store is 16 km away” together with the above-mentioned warning as notification of rest area information.

  On the other hand, when a negative determination result is obtained by the break determination unit 27, the warning output unit 26 has a break along the guidance route after the most recent exitable point when the warning is output. Notification of not to do so is also performed.

  This notification may be, for example, a voice guidance and / or display such as “There is no rest area”.

  Furthermore, as shown in FIG. 2, the navigation CPU 10 has a fuel determination unit 28 as fuel determination means as one of its functional blocks. The fuel determination unit 28 guides the guide route after the nearest escapeable point based on the search data in the map data stored in the hard disk drive 11 when a positive determination result is obtained by the entry determination unit 25. The nearest fuel supply station is extracted at the location of the vehicle along the road. In addition, the fuel determination unit 28 has sufficient fuel for the vehicle to the nearest fuel supply station based on the remaining amount of fuel in the own vehicle and the distance from the vehicle position to the nearest fuel supply station. It is determined whether or not. Here, for the extraction of the nearest fuel supply station along the guide route, a search method similar to the search for the rest station along the guide route described above can be used. Further, the fuel supply station may be a gas station, or may be a fuel supply station other than gasoline serving as a power source for the vehicle. Further, the fuel determination unit 28 is a level sensor that detects the remaining amount of fuel in the vehicle in the case of gasoline, for example, the remaining amount of gasoline stored in the fuel tank as the level of the gasoline level. What is necessary is just to acquire as a detection result. In this case, the fuel determination unit 28 is based on the obtained gasoline remaining amount [l] of the own vehicle and the average fuel consumption information [km / l] of the own vehicle stored in advance in the hard disk drive 11 or the like. Then, after calculating the distance [km] that the vehicle can currently travel, it is determined whether or not the calculated distance is longer than the distance from the vehicle position to the nearest gas station. It may be.

  In the present embodiment, when a negative determination result is obtained by the fuel determination unit 28, the warning output unit 26 indicates that there is little fuel and the nearest escapeable point at the time of warning output. Notification of the distance to the nearest fuel supply station is also made.

  This notification may be, for example, a voice guidance and / or display such as “Insufficient gasoline. The nearest petrol station is 17 km away”.

  Next, the operation of the present embodiment will be described with reference to FIG.

  For convenience, it is assumed that route guidance according to the guidance route to the destination is started by the route guidance unit 23 in the initial state of FIG.

  In the present embodiment, from the initial state, first, in step 1 (ST1) of FIG. 3, the approach determination unit 25 performs a long-distance escape difficult section by the approach described above at the nearest possible exit point. It is determined whether or not to enter. If a positive determination result is obtained in step 1 (ST1), the process proceeds to step 2 (ST2). If a negative determination result is obtained, the process proceeds to step 9 (ST9).

  Here, the processing after step 2 (ST2) will be described first. First, in step 2 (ST2), the warning output unit 26 outputs a warning and the latest escape in conjunction with the warning output by the method described above. Notification of the distance from a possible point to the next possible escape point.

  Next, in step 3 (ST3), the resting place determination unit 27 determines whether or not there is a resting place along the guidance route after the nearest possible escape point by the method described above. If a positive determination result is obtained in step 3 (ST3), the process proceeds to step 4 (ST4), and if a negative determination result is obtained, the process proceeds to step 5 (ST5).

  Here, when the process proceeds to step 4 (ST4), in this step 4 (ST4), the warning output unit 26 notifies the rest area information by the method described above, and outputs the warning in step 2 (ST2). In conjunction with. After step 4 (ST4), the process proceeds to step 6 (ST6).

  On the other hand, when the process proceeds to step 5 (ST5), in this step 5 (ST5), there is no rest area along the guide route after the nearest escapeable point by the warning output unit 26 by the method described above. The notification to that effect is performed together with the output of the warning in step 2 (ST2). After step 5 (ST5), the process proceeds to step 6 (ST6).

  Next, in step 6 (ST6), the fuel determination unit 28 extracts the nearest fuel supply station along the guide route after the nearest escape possible point by the above-described method.

  Next, in step 7 (ST7), the fuel determination unit 28 determines whether or not the fuel of the own vehicle is sufficient to the nearest fuel supply station extracted in step 6 (ST6) by the method described above. If a positive determination result is obtained in step 7 (ST7), the process proceeds to step 8 (ST8), and if a negative determination result is obtained, the process proceeds to step 9 (ST9).

  Here, when the process proceeds to step 8 (ST8), in this step 8 (ST8), the warning output unit 26 informs that the amount of fuel is small and supplies the nearest fuel from the nearest escapeable point by the above-described method. The distance to the place is notified together with the warning output in step 2 (ST2). After step 8 (ST8), the process proceeds to step 9 (ST9).

  On the other hand, when the process proceeds to step 9 (ST9), in step 9 (ST9), the route guidance unit 23 determines whether or not the vehicle has arrived at the destination based on the detection result of the vehicle position detection unit 20. judge. If a positive determination result is obtained in step 9 (ST9), the route guidance is terminated, and if a negative determination result is obtained, the process returns to step 1 (ST1).

  As described above, according to the present embodiment, when the vehicle enters the long-distance escape difficult section at the nearest escapeable point, the warning output unit 26 can output a warning to that effect. Therefore, the user can be given an opportunity to make a self-determination as to whether or not he / she should immediately travel in the long-distance escape difficult section by allowing the user to know in advance that he / she will enter the long-distance escape difficult section. As a result of self-judgment, if a break or fuel supply is desired before entering the long-distance escape difficult section, the guide route is temporarily exited at the nearest possible escape point, and a nearby rest area or fuel supply station It is also possible to stop by. In addition, when entering the long-distance escape difficult section as it is, it is possible to travel after knowing in advance that it is difficult to escape over a long distance. As a result, anxiety and pain when traveling in a long distance escape difficult section can be alleviated.

  In addition, this invention is not limited to embodiment mentioned above, A various change can be made in the limit which does not impair the characteristic of this invention.

  For example, when outputting a warning, the warning output unit 26 searches for a resting place and a fuel supply station along a road outside the nearest guide route to the nearest escapeable point, and then finds the resting place and fuel searched for. You may show to a user in the state which can set a supply station as a stopover. In this case, after the proposed resting place and fuel supply station are set as transit points, route guidance according to a new guidance route that passes through the long-distance escape difficult section after passing through the set transit point. Just do it.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 11 Hard disk drive 20 Own vehicle position detection part 22 Route search part 23 Route guidance part 25 Approach determination part 26 Warning output part

Claims (7)

Map data storage means for storing map data;
Own vehicle position detecting means for detecting the own vehicle position;
Based on the map data stored in the map data storage means, a route search means for searching for an optimum route to the destination;
A route guidance unit that performs route guidance using the optimum route searched by the route search unit as a guidance route,
During the route guidance by the route guidance means, based on the map data corresponding to the guidance route and the detection result of the vehicle position detection means, a forward direction with respect to the vehicle position that can escape from the guidance route An entry determination means for determining whether or not the vehicle enters a specific route section on the guidance route that is considered difficult to escape for a predetermined distance or more at the nearest possible escape point;
A navigation apparatus comprising: warning output means for outputting a warning that the own vehicle enters the specific route section when a positive determination result is obtained by the entry determination means. The specific route section is a route section in which a right or left turn for escaping from the section over the predetermined distance is impossible and a U-turn for escaping from the section is considered difficult. The navigation device according to claim 1. The warning output means also performs a notification of a distance from the nearest exitable point on the guidance route to the next exitable point when outputting the warning. The navigation device according to claim 2. When a positive determination result is obtained by the entry determination means, based on the map data, it is determined whether or not there is a rest area along the guidance route after the nearest possible exit point A determination means,
The warning means includes the break including the distance from the nearest possible exit point to the rest area when the warning is output when a positive determination result is obtained by the rest place determination means. The navigation apparatus according to any one of claims 1 to 3, wherein notification of the location information is also performed. The warning means, when a negative determination result is obtained by the resting place determination means, also performs a notification that the resting place does not exist when outputting the warning. The navigation device according to claim 4. When a positive determination result is obtained by the entry determination means, the vehicle is extracted after extracting the nearest fuel supply station along the guide route after the nearest escape possible point based on the map data. Fuel determination means for determining whether the fuel of the vehicle is sufficient to the nearest fuel supply station based on the remaining amount of fuel and the distance from the vehicle position to the nearest fuel supply station Prepared,
The warning means, when a negative determination result is obtained by the fuel determination means, indicates that the amount of fuel is low and when the warning is output, from the nearest possible escape point to the nearest fuel supply station. The navigation device according to any one of claims 1 to 5, wherein notification of the distance is also performed. The navigation device according to any one of claims 1 to 6, wherein the escape possible point is an intersection on the guidance route.

Images