JP2010203983A - Navigation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation system that holds data on positional information and related information of an emergency parking area in a navigation apparatus 1, displays the positional information of the emergency parking area by simple operation on emergency, performs navigation route guidance to the emergency parking area, and can secure safety. <P>SOLUTION: Display positional information 4 of an emergency parking area of an expressway or a road exclusive for automobiles is stored in a map database of the navigation apparatus 1. An emergency parking area switch 12a for searching emergency parking areas is installed in a driver's seat of a vehicle. When the emergency parking area switch 12a is operated, an emergency park area is searched based on the display positional information 4, distance, time, or the like from a current position of an own vehicle to the emergency parking area is displayed, and a route to the emergency parking area is guided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to traffic regulation data (hereinafter referred to as a map database) in a navigation device, that is, emergency parking zone information, in response to an unexpected situation that occurs while a vehicle is traveling on a highway or an automobile-only road. The present invention relates to a navigation system having a function of performing navigation route guidance to an emergency parking zone that can be safely parked.

  If a sudden situation occurs while driving on a highway or motorway, and you want to stop or park the vehicle safely, you need to drive to the nearest emergency parking zone, but the location of the emergency parking zone is unknown There are many cases. Therefore, there is a case where the vehicle stops or parks on a nearby shoulder.

  In addition, the map database in the navigation system is created by a map database production company, but currently there is no emergency parking zone information in the map database.

  The term “automobile road” as used herein means a high-standard trunk road (highway national highway or general national highway exclusive road), a regional high-standard road (excluding some), or an automobile road under the Road Transportation Law (excluding some). )and so on. Further, in a narrow sense, an automobile-only road is a road or a portion of a road that is used for general traffic only by an automobile designated by a road manager.

  Next, the emergency parking zone is a space installed on the shoulder of a road for the purpose of stopping a broken vehicle, an emergency vehicle, a road management vehicle, and the like.

  For example, it is said that there are 13 emergency parking zones and 6 downward parking spaces between Seki IC and Iga IC on General Route 25 (Meihan National Highway), which is an exclusive road for automobiles. And there exists a place where the installation interval of this emergency parking zone exceeds 1 km.

  Conventionally, as Patent Document 1, a navigation device that displays a map around the current position of a vehicle is known. Here is the following description.

“There was an emergency situation that required stopping, such as when a user boarding a vehicle had a poor physical condition, when a vehicle malfunctioned, or when the user suddenly wanted to take a rest. Considering the case, it is necessary to perform a series of operations to search for facilities, etc., even though we want to find the location of facilities that can be a stop as soon as possible. In particular, the operation to select the genre of the facility to be searched according to the contents of the emergency situation was very troublesome for the user at the time of the emergency occurrence.
For this reason, the invention described in Patent Document 1 accepts the occurrence of an emergency requiring a stop by the emergency accepting means. When an occurrence of an emergency situation is accepted, the stop position search means searches for a stop position close to the current position of the vehicle detected by the vehicle position detection means at that time.

  As a result, when an emergency situation that requires a stop occurs, the stop position close to the current position of the vehicle is searched by notifying that fact, so the stop location can be easily searched. .

  Further, it is described that the vehicle can be surely guided to the stop position by including the guide means for guiding the vehicle to the stop position searched by the stop position search means. Further, map display means for displaying a map around the current position of the vehicle detected by the vehicle position detection means is provided.

  When there are a plurality of stop positions searched by the stop position search means, the map display means displays the stop positions included in the map display range on the map and the stop closest to the current position of the vehicle. It is described that it is desirable to guide to the position by the guiding means.

  And it is supposed that a vehicle can be rapidly guide | induced to a stop position by performing guidance to the stop position nearest to the present position of a vehicle. In addition, by displaying a plurality of stop positions on a map, it is also possible to grasp stop positions that have not been guided by the guiding means. Therefore, it is said that a user who thinks that another stop position is desirable can move the vehicle to this stop position by referring to the stop position displayed on the map.

  In addition, when there are a plurality of contents of emergency situations, the system further comprises selection means for allowing the user to select the contents of emergency situations when the occurrence of an emergency situation is accepted by the emergency situation acceptance means. According to the contents of the emergency situation, it is desirable that the stop position is searched by the stop position search means. Thus, the user can search for an appropriate stop position by selecting the contents of the emergency situation according to the situation where the user is placed.

JP 2002-340597 A

  According to the technology of Patent Document 1, various facilities, specifically, convenience stores, hospitals, pharmacies, car dealers, car maintenance shops, car supply stores, gas stations, toilets, parking areas, and service areas can be searched. However, the emergency parking zone cannot be searched because there is no emergency parking zone information in the map database.

  Therefore, there are many cases where it is unknown where the nearest emergency parking zone is, and in anxiety, it may continue to drive or park or park on a dangerous lane or shoulder, A dangerous situation occurs.

  The present invention has been made paying attention to such problems existing in the prior art, and its purpose is to maintain the emergency parking zone position information and related information data in the navigation device, and Sometimes, a navigation system is provided that can display the location information of an emergency parking zone with a simple operation, perform navigation route guidance to the emergency parking zone, and ensure safety.

  In addition, the description content of the patent documents enumerated as a prior art can be introduce | transduced or used by reference as description of the technical element described in this specification.

  In order to achieve the above object, the present invention employs the following technical means. That is, according to the first aspect of the present invention, the display position information (4) of the emergency parking zone of the expressway or the automobile exclusive road is stored in the map database of the navigation device (1), and the emergency parking zone is provided in the driver's seat of the vehicle. The emergency parking zone switch (12a) for search is installed, and when the emergency parking zone switch (12a) is operated, the emergency parking zone is searched based on the display position information (4), and the current vehicle Displays at least one of the distance from the location to the emergency parking zone, the time to reach the emergency parking zone, and the location display of the emergency parking zone on the map and the route guidance to the emergency parking zone It is characterized by doing.

  According to the present invention, by operating the emergency parking zone switch (12a), automatically the distance from the current position of the vehicle to the emergency parking zone, the time to reach the emergency parking zone, the position of the emergency parking zone In addition to displaying at least one of the location indications on the map with the current location and route guidance to the emergency parking zone, it gives the user a sense of security and does not overlook the emergency parking zone. It is easy to stop at the parking lot. In addition, when the emergency parking zone is far away, it is possible to make a judgment such as an emergency stop on the shoulder.

  In the invention according to claim 2, when the distance from the current position of the own vehicle to the emergency parking zone is a predetermined distance or more, or the time until the emergency parking zone is reached from the current position of the own vehicle is a predetermined time or more. The location of the alternative location of the emergency parking zone, the distance from the current location of the vehicle to the alternative location, the time to reach the alternative location, the location of the alternative location and the current location on the map It is characterized in that at least one of the position displays is displayed and route guidance is provided to an alternative place.

  According to the present invention, since it leads to an alternative place when it is far to reach the emergency parking zone, it is possible to reach the alternative place without performing a usual complicated navigation operation such as searching for an alternative place in a hurry. I can do it.

  According to the third aspect of the present invention, the location of the alternative location is searched to display a plurality of alternative location candidate locations, and the alternative location selection switch (31, 32, and 33) is displayed. It is characterized by route guidance to an alternative place selected in (31, 32, and 33).

  According to the present invention, it is possible to search for alternative locations, display a plurality of candidate locations, and allow the user to select, so that it is possible to immediately guide to an alternative location that matches the reason for the emergency stop.

  In the invention according to claim 4, when the emergency parking zone switch (12a) is operated, the emergency parking zone is searched at the same time as the emergency parking zone, and a plurality of candidates for the emergency parking zone and the alternative location are searched. In addition to displaying the ground, the emergency parking zone selection switch (41, 42 and 43) is displayed, and the route guidance is provided to the candidate site selected by the emergency parking zone selection switch (41, 42 and 43). It is said.

  According to this invention, when the emergency parking zone switch (12a) is operated, from the beginning, not only the emergency parking zone, but also search for alternative locations for the emergency parking zone, and display a plurality of candidate sites to display the user. So you can immediately navigate to a location that matches the reason for the emergency stop.

  In the invention according to claim 5, when the emergency parking zone and the alternative place are not within the predetermined range, a place safe for parking in an emergency is searched and displayed on the map, and the route to the safe place is displayed. It is characterized by guiding.

  According to the present invention, when neither the emergency parking zone nor the alternative place is within the predetermined range, it is possible to park and stop at a safe place.

  The invention described in claim 6 is characterized in that the alternative place is at least one of a service area, a parking area, and an exit interchange leading to a general road.

  According to the present invention, it is possible to reach at least one of a service area, a parking area, and an exit interchange leading to a general road as an alternative place, so stop at the parking lot in these areas or get off at the exit interchange. You can stop on the shoulders of ordinary roads.

  In the invention according to claim 7, emergency map information (7), which is data on the presence or absence of an emergency call in the emergency parking zone, is stored in the map database of the emergency parking zone, and the emergency parking zone switch (12a). When is operated, the presence or absence of an emergency call in the searched emergency parking zone is displayed.

  According to this invention, it is possible to know in advance whether or not there is an emergency call in the emergency parking zone.

  In the invention according to claim 8, when a screen other than the screen for guiding the emergency parking zone is displayed on the display of the navigation device (1), when the emergency parking zone switch (12a) is operated, A screen for guiding an emergency parking zone is automatically and immediately displayed on the display (11).

  According to the present invention, for example, even when an audio or vehicle air conditioner screen is displayed, when the emergency parking zone switch (12a) is operated, the screen automatically guides the emergency parking zone on the display. And since it is switched immediately, the emergency parking zone is quickly guided.

  The invention according to claim 9 is characterized in that a hazard lamp or a direction indicator (25) is automatically blinked immediately before the emergency parking zone is route-guided and the emergency parking zone is reached.

  According to the present invention, it is possible to decelerate before the emergency parking zone so as not to pass through the emergency parking zone, and to notify the subsequent vehicle of an emergency stop.

  In addition, the code | symbol in the parenthesis as described in a claim and said each means is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

It is a whole lineblock diagram showing the whole navigation system in a 1st embodiment of the present invention. It is a table | surface which shows the data structure example of the emergency parking belt information in the said embodiment. It is a screen figure which shows an example of the display screen of the display of the navigation apparatus immediately before the emergency parking zone switch in the said embodiment is operated. It is a flowchart which performs route guidance to the emergency parking zone in the said embodiment. It is a display figure which shows the example of a mark display of the emergency parking belt in the said embodiment. It is a display figure which shows the example of a mark display of the emergency call in the said embodiment. It is a flowchart which performs route guidance to the emergency parking zone or an alternative place in 2nd Embodiment. It is a screen figure of a display which shows the example of a list display when making a user choose a plurality of alternative places in a 2nd embodiment. It is a screen figure of a display which shows an example of a list display when making a user choose a plurality of emergency parking belts etc. in a 2nd embodiment. It is a flowchart which performs route guidance to the emergency parking zone etc. of 3rd Embodiment.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 is an overall configuration diagram showing the entire navigation device 1.

  In the information storage device 13 of the navigation device 1, position information and related information data relating to emergency parking zones installed on highways or automobile roads nationwide are inserted as part of the map database. And in the case of emergency, based on the positional information and related information regarding this emergency parking zone, the user is guided to the emergency parking zone where the user can park safely.

  Here, FIG. 2 is a table showing one data structure example in the map database. Emergency parking zone, etc. (Emergency parking zone, in addition to the emergency parking zone mentioned above, includes parking areas, service areas, and alternative places for emergency parking zones such as exit interchanges that can be used on public roads. The positional information and related information (in the present invention, simply referred to as emergency parking zone information 10) related to the following are as follows.

  First, the identification code 2 is ID information such as an identification number assigned to an emergency parking zone or the like. Name 3 is, for example, the name of an emergency parking zone such as Route 23 down Matsukawa. The display position information 4 is position information corresponding to a map on which the corresponding emergency parking zone or the like is displayed on the map, for example, latitude and longitude information on the map.

  The route guidance position information 5 is coordinate information and guidance point information of facilities such as a parking area and a service area as a destination.

  That is, normally, the information in which the facility in the navigation device 1 is the destination is coordinate information for displaying the location of the facility on the map (center position information of the facility and the distances in the X and Y directions of the facility). Such information is stored in the route guidance position information 5 because information and guidance point information necessary for guidance on which side of the facility the road is) are necessary.

  The connection road link information 6 is information indicating which link, that is, an emergency parking zone or the like is in contact with a line segment of the road. In other words, it is information indicating from which link the target emergency parking zone is entered.

  The emergency call information 7 is information indicating whether an emergency call is equipped in the emergency parking zone or the like. The display mark type 8 is information indicating what kind of mark is used when displaying an emergency parking zone or the like on the map.

  Hereinafter, these will be described in more detail. FIG. 3 is a front view showing an example of a display screen of the display 11 of the navigation device 1 immediately before the emergency parking zone switch 12a is operated.

  As shown in FIG. 3, as one of the operation means 12 (FIG. 1) of the navigation device 1, an emergency parking is written in an easily understandable and easy-to-operate place on the display screen of the display, for example, as shown in FIG. 3. A dedicated switch 12a (emergency parking zone switch 12a) is arranged. The emergency parking zone switch 12a may be located anywhere within the driver's seat of the vehicle, and may be installed as a mechanical switch outside the navigation device 1.

  The screen of the display 11 of the navigation device 1 in FIG. 3 shows a multiplex broadcast screen. Even in such a case, the operation of guiding to the emergency parking zone is performed by operating the emergency parking zone switch 12a at the right corner. Of course, when other audio display screens, normal navigation display screens, and automotive air conditioner operation display screens are displayed, a similar emergency parking zone switch 12a is located on the right corner of the screen. Is displayed.

  The navigation device 1 of FIG. 1 has a navigation ECU 15 as a control device 15, and includes an information storage comprising a position detection device 16 that detects the current position of the vehicle, an HDD (hard disk drive) device that stores a map database, and the like. A device 13 is provided. Here, the navigation ECU 15 corresponds to route setting means and recommended travel lane determining means.

  Further, the navigation device 1 includes a display audio output provided with a display device (display 11 in FIG. 3) such as an LCD for displaying the vehicle current position mark, recommended route, map data, and the like in a superimposed manner. A device 18, a memory 19 and an external device interface 20 are provided.

  The information storage device 13 stores a map database. The map database includes road data, background data, attribute data, and the like. The road data includes mutually related shape information and phase information. The phase information describes the intersection (node) and the connection (link) of the intersection, and is used for setting a recommended route.

Here, links and nodes will be described. Each road display on the map is divided into a plurality of nodes such as intersections, branches, and joining points, and each node is defined as a link. Road information is configured by connecting the links. The link data consists of a unique number (link ID) that identifies the link, a link length that indicates the length of the link, points that indicate the start and end of the link, road name, road type, road width, number of lanes, etc. ing.

On the other hand, a node represents a point where each road display on the map intersects, branches, and merges. Each node is given a node ID with a unique number, node coordinates, node name, connection link ID in which link IDs of all links connected to the node are described, branch location, merge location, etc. ing.

  The position detection device 16 of FIG. 1 receives a GPS radio wave transmitted from a GPS satellite with an antenna, acquires a GPS receiver, a geomagnetic sensor that detects a direction based on geomagnetism, and an angular velocity. A gyroscope (gyro sensor) that detects and calculates an azimuth and a distance sensor that detects a travel distance and acquires distance data are provided.

  Then, by complementing the data acquired by the GPS receiver, the geomagnetic sensor, the gyroscope, and the distance sensor, the current position of the vehicle is detected and the accurate travel distance is measured.

  The navigation ECU 15 constituting the control device 15 has a function of calculating a recommended route from the current position to the destination with respect to the destination input from the operation means 12 operated by the user. As described above, a method for automatically setting a recommended route is performed by, for example, cost calculation using a well-known Dijkstra method.

  The cost calculation is to calculate a route to reach the destination with the minimum cost using a cost value assigned to each link in consideration of the link length, road type, road width, and the like.

  The case of a right or left turn leading to a road outside the course is a case where an exit route (link) other than straight ahead is selected for the approach route (link) to the intersection (node) of interest. Whether or not the vehicle is traveling straight is determined in consideration of the road type, link attribute, route name, route number change, approach, exit, and the like.

First, the route guidance to the nearest emergency parking zone will be described with a flowchart. FIG. 4 is a flowchart for performing route guidance to the emergency parking zone according to the first embodiment.
(Step S1)
When this flow is started, the operation proceeds to the next step S2 after confirming the operation of the emergency parking zone switch 12a (FIG. 3).
(Step S2)
Know your vehicle's current location information. That is, the vehicle current position information and travel direction information are acquired. In addition, as shown in FIG. 3, when the display 11 of the navigation device 1 shows a screen other than the route guidance screen such as the FM multiplex broadcast display screen, the route guidance with the map display immediately by the operation of the emergency parking zone switch 12a. Switch to the screen and display the position of the vehicle on the road.
(Step S3)
The current position is grasped from the current position information of the own vehicle, and the emergency parking zone information 10 (FIG. 2) ahead is searched from the traveling direction information.
(Step S4)
Then, the nearest emergency parking zone is set as a route guidance destination.
(Step S5)
Next, route guidance to the emergency parking zone set as the destination is executed. Further, the position of the emergency parking zone and the presence / absence of an emergency call in the emergency parking zone are marked on the map screen.

  That is, in the data structure of the emergency parking zone information 10 (FIG. 2) set as the destination, the presence or absence of an emergency call is confirmed from the emergency phone information 7 (FIG. 2). A mark indicating that an emergency call exists is displayed near the mark display on the map. If there is no mark, no such mark is displayed.

  FIG. 5 is a display example of the emergency parking zone mark 21a used in the first embodiment, and FIG. 6 is a display example of the emergency call mark 21b.

  Normally, an expressway travels about 20 m per second, so it takes 10 seconds to 200 m ahead, 50 seconds to 1 km ahead, and about 1 minute 40 seconds to 2 km ahead. Therefore, the emergency parking zone that is far away is not route-guided immediately, and the emergency parking zone within a predetermined distance range is searched or displayed.

  Therefore, in step S5 of FIG. 4, it is determined whether or not the distance to the emergency parking zone that is the destination is within 2 km. If the distance is within 2 km, route guidance to the emergency parking zone is executed. If there is no emergency parking zone within the specified distance above, route guidance will not be given immediately, such as “There is no emergency parking zone within the 2km range. Are you looking for further distances? YES, NO” indicate. As a result of this display, when the touch switch on the display of YES is operated, route guidance is provided for an emergency parking zone exceeding 2 km.

  In route guidance, the distance from the current position of the vehicle to the emergency parking zone is displayed. Alternatively, the time until reaching the emergency parking zone may be displayed. The time is calculated from the average vehicle speed at that time.

  Further, only the position display on the map of the position of the emergency parking zone and the current position may be used. Even in this case, it is possible to grasp how far the emergency parking zone exists by comparing the position of the emergency parking zone on the map with the current position.

  And it guide | induces to an emergency parking zone with the route guidance function of this step S5. At this time, immediately before reaching the emergency parking zone, the user is warned that the emergency parking zone is near, and the hazard lamp or direction indicator 25 in FIG. 1 is automatically blinked. As a result, the vehicle can decelerate before the emergency parking zone so as not to pass through the emergency parking zone, and can notify the subsequent vehicle of an emergency stop.

  If the emergency parking zone that guides the route is in a tunnel, there is an emergency evacuation passage such as an emergency exit, whether there is an emergency passage connected to the tunnel on the other side, an emergency telephone, a fire alarm, and You may display the position of a fire extinguisher or a fire hydrant, the evacuation method, etc. on the navigation display screen of the display 11 (FIG. 3).

  As for the above evacuation method, if there is no special emergency exit or condemnation tunnel, the direction from the current position in the tunnel to the tunnel exit, the direction of the wind in the normal tunnel, etc., indicating the escape direction (traveling direction or reverse direction) You may do it.

  Thus, according to the first embodiment, by operating the emergency parking zone switch 12a (FIG. 3), the distance from the current position of the vehicle to the emergency parking zone, the emergency parking zone, is automatically reached. Until at least one of the position display on the map of the position of the emergency parking zone and the current location is displayed, and the route is guided to the emergency parking zone. Therefore, it is possible to give a sense of security to the user and to stop at the emergency parking zone without overlooking the emergency parking zone.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. In the following embodiments, the same components as those in the first embodiment described above are denoted by the same reference numerals, description thereof will be omitted, and different configurations and features will be described.

  In the second embodiment, when there is no emergency parking zone within a predetermined distance, for example, 1 km, it is determined whether there is an alternative place before that, for example, within 800 m in the traveling direction. If there is an alternative place, route guidance is provided for the alternative place. It also has a function of guiding the route to a safe place for parking and stopping other than emergency parking zones in an emergency.

  This alternative location is a service area, a parking area, and an exit interchange. An exit interchange is an interchange that can be used on public roads other than expressways and motorways. Since this exit interchange can be used on public roads, it can be used as a substitute for an emergency parking zone. Select and present a plan for emergency parking on public roads. Hereinafter, description will be given with reference to the drawings of the first embodiment.

FIG. 7 is a flowchart for performing route guidance to an emergency parking zone or an alternative place in the second embodiment.
(Step S21)
When this flow is started, the operation proceeds to the next step S22 after confirming the operation of the emergency parking zone switch 12a (FIG. 3).
(Step S22)
Know your vehicle's current location information. That is, the vehicle current position information and travel direction information are acquired. In addition, when the display 11 of the navigation device 1 shows a screen other than the route guidance screen as in FM multiplex broadcasting as shown in FIG. 3, the operation of the emergency parking zone switch 12a immediately switches to the route guidance display with a map display. Switch and display the position of the vehicle on the road display.
(Step S23)
And the driving | running | working current position is grasped | ascertained from the present position information of the own vehicle, and the emergency parking zone information 10 (FIG. 2) ahead is searched from driving | running | working direction information.
(Step S24)
Next, the nearest emergency parking zone is set as a route guidance destination.
(Step S25)
Next, it is determined whether the destination is within 1 km. Instead of the distance determination, it may be determined whether the time from the current position of the host vehicle to the emergency parking zone at the current average vehicle speed is within a predetermined time.
(Step S26)
When the destination is within 1 km, route guidance to the emergency parking zone set as the destination is executed. Next, the position of the emergency parking zone and the presence / absence of an emergency call in the emergency parking zone are marked on the map screen.

  That is, for the emergency parking zone set as the destination, the presence of an emergency call is confirmed from the emergency phone information 7 of the emergency parking zone information 10 (FIG. 2). The mark 21b indicating that there is an emergency call in FIG. 6 is displayed so as to be juxtaposed with the display of the mark 21a (FIG. 5).

  In the route guidance in step S26, the distance from the current position of the host vehicle to the emergency parking zone is sequentially displayed. Alternatively, the time until reaching the emergency parking zone may be displayed sequentially. The time is calculated from the average vehicle speed at that time. Further, only the position display on the map of the position of the emergency parking zone and the current position may be used. Even in this case, it is possible to grasp how far the emergency parking zone exists by comparing the position of the emergency parking zone on the map with the current position.

And it guides to an emergency parking zone with the route guidance function of step S26. At this time, immediately before reaching the emergency parking zone, the user is warned that the emergency parking zone is near, and the hazard lamp or the intermittent relay of the direction indicator 25 (FIG. 1) is driven by the output signal of the navigation device 1. Automatically flash.
(Step S27)
In step S25 of FIG. 7, if the destination does not exist within 1 km, it is determined in step S27 whether there is an alternative parking area within 800 m. (In addition, instead of this distance determination, it may be determined whether or not the alternative place is within a predetermined time from the current position of the vehicle to the alternative place.)
(Steps S27a and S28)
If it is determined in step S27 whether there is an alternative place within 800 m, if there is an alternative place within 800 m, the alternative place is selected in step S27a, and then the selected alternative place is selected in step S28. Route guidance to. In step S27a, a list of types of alternative places, distances to the alternative places or the time required for arrival, and the presence / absence of an emergency call are displayed, and the user is allowed to select a destination.

  FIG. 8 is a screen diagram of the display 11 showing an example of the list display when the user selects a plurality of alternative locations. The alternative place selection switches 31, 32 and 33 on this screen select one of the alternative places, and route guidance is performed using the selected alternative place as the destination. When there is only a single alternative location, the alternative location selection switch is not displayed on the screen of FIG. 8, and is automatically selected after the single alternative location is displayed.

  In FIG. 8, on the route 34 indicates that there is a corresponding alternative place on the extension line of the current traveling road even if there is no right / left turn, that is, the route is not changed. Further, the out-of-route 35 is a display in the case where a right / left turn is made to reach the alternative place, and a route change to another road away from the current driving road is required.

In the case of route guidance in the service area (SA), the parking area (PA), and the exit interchange (IC), the traveling direction of the vehicle is determined, and the up line and down line such as a highway with respect to the traveling direction are determined. Judgment is made and guidance is made in an appropriate direction. Thus, in consideration of the traveling direction, guidance for an alternative place is performed. This is because on highways and the like, even if route guidance is provided for an alternative location on the opposite lane side, the lane cannot be crossed by a median strip or the like.
(Step S290)
In step S27, if there is no substitute place within 800 m, the answer is NO, and in step S290, it is determined whether there is an emergency parking zone (emergency parking zone, service area, etc.) exceeding 800 m and within 3 km.
(Steps S290a and S291)
In step S290, if there is an emergency parking zone or the like that exceeds 800 m and within 3 km, it is selected in step S290a, the selected point is set as the destination, and route guidance is performed in step S291. In this route guidance, the distance from the current position of the host vehicle to the emergency parking zone is sequentially displayed. Or you may display sequentially the time until it reaches an emergency parking zone. Moreover, it is good also as only the position display on the map of positions, such as an emergency parking belt | band | zone, and the present position.

  In step S290a, the selection screen (FIG. 9) is displayed on the display 11 of the navigation device 1, and after obtaining the user's judgment by operating the emergency parking zone selection switches 41, 42 and 43 (FIG. 9), If it is a single candidate, the destination is automatically selected. Then, search for the location that will be the destination of the selected emergency parking zone, etc., the distance from the current position of the vehicle to the emergency parking zone, the time to reach the emergency parking zone, etc., emergency parking zone, etc. At least one of the position display on the map of the current position and the current position is displayed.

  In addition to the above display, route guidance is provided to an emergency parking zone or the like. According to this, even if it is far from the emergency parking zone etc., it will lead to the emergency parking zone etc. with a simple operation, so you can hurry and perform normal complicated navigation operations such as searching for the emergency parking zone etc. There is no emergency parking zone.

  In addition, the emergency parking zone is at least one of an emergency parking zone, a service area, a parking area, and an exit interchange leading to a general road. Therefore, in the service area and the parking area, emergency parking is provided in the parking lot in the area. Yes, at the exit interchange, you can go out to the general road and park on the shoulder.

  In addition, at least one of the distance from the current position of the vehicle to the emergency parking zone, the time to reach the emergency parking zone, the position display on the map of the emergency parking zone and the current position on the map is displayed. Display multiple candidate sites.

The emergency parking zone selection switches 41, 42 and 43 (FIG. 9) are displayed together with the display of the candidate sites, and the route to the emergency parking zone selected by the emergency parking zone selection switches 41, 42 and 43 is displayed. I am guiding you. According to this, since a plurality of candidate sites such as emergency parking zones can be displayed and selected by the user, it is possible to immediately guide to a location that matches the reason for the emergency stop.
(Step S292)
In step S290, when there is no emergency parking zone or the like within 3 Km exceeding 800 m, a safe place for parking in an emergency is displayed on the map in step S292. The safe places for parking and stopping in an emergency are, for example, straight roads without curves, roads with good visibility, roads with wide or wide shoulders, and roads with many lanes.
(Step S293)
Next, in step S293, the user designates a parking / parking location on the map. That is, the parking / parking location on the map is selected with the mouse and clicked to specify the location.
(Step S294)
Then, route guidance is performed using the place selected and designated by the user as the destination of route guidance. In this route guidance, the distance from the current position of the host vehicle to the destination is sequentially displayed. Alternatively, the time to reach the destination may be displayed sequentially. Further, only the position display on the map of the destination position and the current position may be used.

(Third embodiment)
Next, a third embodiment of the present invention will be described. Features different from the above-described embodiment will be described. As mentioned above, emergency parking belts, in addition to emergency parking belts, include parking areas, service areas, and places where emergency parking belts such as exit interchanges can be used on general roads. Represents.

In the third embodiment, not only a pure emergency parking zone is used as a destination candidate from the beginning, but an emergency parking zone or the like is used as a destination candidate. FIG. 10 is a flowchart for performing route guidance to the emergency parking zone and the like according to the third embodiment.
(Step S31)
When this flow is started, the operation proceeds to the next step S32 after confirming the operation of the emergency parking zone switch 12a (FIG. 3).
(Step S32)
Know your vehicle's current location information. That is, it is confirmed whether or not the emergency parking zone switch 12a is pressed, and when it is pressed, the current position information and the traveling direction information of the vehicle are acquired. In addition, when the display 11 of the navigation device 1 shows a screen other than the route guidance screen as in FM multiplex broadcasting as shown in FIG. 3, the emergency parking zone switch 12a is immediately switched to the route guidance display with the map display. The position of the vehicle is displayed on the road display.
(Step S33)
And the present position is grasped | ascertained from the present position information of the own vehicle, and emergency parking zone information 10 (FIG. 2) within a predetermined distance ahead is searched from the traveling direction information.
(Step S34)
When there are a plurality of searched emergency parking zones, the display screen as shown in FIG. 9 is displayed on the display, and the emergency parking zone selection switches 41, 42 and 43 including touch switches are selected. An emergency parking zone or the like is set as a route guidance destination. FIG. 9 is a screen view of a display showing an example of a list display when the user selects a plurality of emergency parking zones in the second embodiment, which is used in the third embodiment. In the case of only a single emergency parking zone, the emergency parking zone selection switches 41, 42, and 43 on the display screen of FIG. 9 are omitted, and the destination is automatically set as the destination.
(Step S35) (FIG. 9)
Next, route guidance to the emergency parking zone set as the destination is executed based on the normal navigation function. At this time, the presence or absence of an emergency call in an emergency parking zone or the like is displayed as a mark on the screen.

  That is, in the data structure of the emergency parking zone information 10 (FIG. 2) set as the destination, the presence / absence of an emergency call is confirmed from the emergency call information 7, and if there is an emergency call, the emergency call as shown in FIG. The mark 21b indicating that there is is displayed. If there is no mark, no such mark is displayed.

  As a screen display such as an emergency parking zone, a position display on a map such as an emergency parking zone, a distance or time required from the current position to the emergency parking zone, a required time display, and a type display such as an emergency parking zone are performed. This type display is a display of the presence / absence of an emergency call such as an emergency parking zone, or the type of service area, parking area, exit interchange, etc., for example, on the display units 44, 45, and 46 in FIG. Equivalent to.

(Other embodiments)
The present invention is not limited to the above-described embodiments, and can be modified or expanded as follows. For example, in the first embodiment described above, the emergency parking zone switch 12a is formed in the screen of the display as a touch switch, but when configured and operated as a mechanical switch on the frame of the navigation device 1 outside the screen, When the navigation screen is darkened, it may be automatically switched to the normal current position display.

  In the first embodiment, the emergency parking zone is routed, and the route guidance for the service area, the parking area, and the exit interchange that are alternative places is not performed. However, the route guidance to the emergency parking zone is performed on the map. In addition, surrounding alternative locations may be clearly highlighted on the map screen.

  In addition, the display modes of the first to third embodiments are different. Among these, the display mode to be operated is selected in the setting mode of the navigation device 1, and any one of the above is selected. The display mode may be set.

  Also in the third embodiment, when there is no emergency parking zone or the like in a predetermined range, a safe place for parking in an emergency may be displayed on a map. This safe place for parking and stopping in an emergency is, for example, a straight road with no curve, a road with good visibility, a road with a wide or wide shoulder, or a road with a large number of lanes, and is set in the map database in advance. Is.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 4 Display position information 7 Emergency telephone information 10 Emergency parking zone information 11 Display 12a Emergency parking zone switch 13 Information storage device 15 Navigation ECU as control apparatus
16 Position detection device 18 Display audio output device 19 Memory 21a Emergency parking mark 21b Emergency call mark 31, 32 and 33 Alternative location selection touch switch 41, 42 and 43 Emergency parking zone selection touch switch

Claims (9)

  In the map database of the navigation device (1), the display position information (4) of the emergency parking zone of the expressway or automobile exclusive road is stored, and the emergency parking zone switch (12a) for searching the emergency parking zone is provided in the driver's seat of the vehicle. When the emergency parking zone switch (12a) is installed and operated, the emergency parking zone is searched based on the display position information (4), and the distance from the current position of the own vehicle to the emergency parking zone , Time to reach the emergency parking zone, displaying at least one of the position display of the emergency parking zone and the current position on the map, and guiding the route to the emergency parking zone A featured navigation system.   When the distance from the current position of the vehicle to the emergency parking zone is a predetermined distance or more, or when the time from the current position of the vehicle to the emergency parking zone is a predetermined time or more, the emergency Search for the location of the alternative location of the parking zone, the distance from the current location of the vehicle to the alternative location, the time to reach the alternative location, the position display on the map of the location of the alternative location and the current location The navigation system according to claim 1, wherein at least one of them is displayed and route guidance is provided to the alternative location.   The alternative location is searched to display a plurality of alternative location candidates, and the alternative location selection switch (31, 32, and 33) is displayed. The alternative location selection switch (31, 32, and 33) is displayed. The navigation system according to claim 2, wherein route guidance is provided to the alternative location selected in step 3.   When the emergency parking zone switch (12a) is operated, the emergency parking zone and the alternative location of the emergency parking zone are searched at the same time, and a plurality of candidate locations for the emergency parking zone and the alternative location are displayed. And an emergency parking zone selection switch (41, 42 and 43) is displayed, and route guidance is provided to the candidate site selected by the emergency parking zone selection switch (41, 42 and 43). Item 4. The navigation system according to item 1.   When the emergency parking zone and the alternative place are not within a predetermined range, a safe place for emergency parking is searched and displayed on a map, and a route guide to the safe place is provided. The navigation system according to any one of claims 2 to 4.   The navigation system according to any one of claims 2 to 5, wherein the alternative place is at least one of a service area, a parking area, and an exit interchange leading to a general road.   The emergency parking zone map database stores emergency telephone information (7) which is data on the presence or absence of emergency calls in the emergency parking zone, and when the emergency parking zone switch (12a) is operated, The navigation system according to any one of claims 1 to 6, wherein presence / absence of the emergency call in the searched emergency parking zone is displayed.   When a screen other than the screen for guiding the emergency parking zone is displayed on the display of the navigation device (1), when the emergency parking zone switch (12a) is operated, the screen is displayed on the display (11). The navigation system according to any one of claims 1 to 7, wherein a screen for guiding an emergency parking zone is displayed automatically and immediately.   The hazard lamp or the direction indicator (25) is automatically blinked immediately before the emergency parking zone is routed and the emergency parking zone is reached. Navigation system.

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