JP2011058884A - Navigation apparatus, navigation method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation apparatus 20 that provides a driver of a vehicle with information on facilities which are easier to stop at. <P>SOLUTION: The navigation apparatus 20 includes: a map data storage unit 28 for storing link data and map data; a facility information storage unit 21 for storing data on, for each facility ID, the coordinates of the facility, the link ID of a road the entrance of the facility faces, and an icon indicating the facility; a current location calculation unit 27 for calculating the current location and traveling direction of the vehicle; a facility ID extraction unit 23 for extracting the facility ID of a facility which is positioned on the left side of the traveling direction of the vehicle on the road on which the vehicle is traveling and of which the distance following the path from the road to the entrance of the facility is less than a preset threshold; and a display control unit 22 for displaying the icon of the facility corresponding to the extracted facility ID in a different manner from the icon of a facility corresponding to a facility ID which has not been extracted by the facility ID extraction unit 23. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technique for providing a user with information on a facility that is mounted on a moving body such as a vehicle and is present near a running road.

  Patent Document 1 below discloses an in-vehicle navigation device that displays only landmarks of facilities located on the left side in the traveling direction of the host vehicle from facilities existing around the guidance route.

JP 2001-116565 A

  By the way, depending on the place, there are a place where a highway and a general road run side by side, a place where a living road runs side by side under an elevated road such as a bypass. In such a place, even if two types of roads are close to each other, it may not be possible to freely go from one road to the other. In this case, for example, even if a facility such as a convenience store is located on the left side of the living road, a vehicle traveling on an expressway or an elevated road (bypass) running alongside the living road stops at the facility. It may not be possible.

  In other words, if the vehicle is on the left side of the road with respect to the traveling direction of the vehicle and the distance from the road is short, the facility there is not necessarily a facility where the driver of the vehicle can easily visit. Therefore, even if information on such a facility is provided, the driver may not actually be able to stop at the facility.

  This invention is made | formed in view of the said situation, The objective of this invention is providing the driver | operator of the vehicle of the information of the facility which is more easy to drop in.

  In order to solve the above-described problem, a first aspect of the present invention is a navigation device mounted on a vehicle, which stores link data that is information about a link indicating a road and map data that is information about a map. Corresponding to the data storage means and the facility ID for identifying each facility, the coordinates of the facility, the coordinates on the road where the entrance of the facility is located, the link ID of the road where the entrance is located, and Map data based on facility information storage means for storing an icon indicating the facility, current position calculation means for calculating the current position and traveling direction of the vehicle, and the current position and traveling direction of the vehicle calculated by the current position calculating means The facility is located on the left side in the traveling direction of the vehicle on the road on which the vehicle is traveling with reference to the storage means and the facility information storage means, and the road The facility ID extracting means for extracting the facility ID of the facility whose distance to the entrance of the facility is less than a predetermined threshold, and the facility ID extracted when the facility ID is extracted by the facility ID extracting means And a display control means for displaying the extracted icon from the facility information storage means and displaying the extracted icon in a mode different from the facility icon corresponding to the facility ID not extracted by the facility ID extraction means. A navigation device is provided.

  According to a second aspect of the present invention, there is provided a navigation method in a navigation device mounted on a vehicle, wherein the navigation device calculates a current position and a traveling direction of the vehicle at a current position calculation step and a current position calculation step. Based on the calculated current position and traveling direction of the vehicle, map data storage means for storing link data, which is information about a link indicating a road, and map data, which is information about a map, and a facility ID for identifying each facility Correspondingly, refer to the facility information storage means for storing the coordinates of the facility, the coordinates on the road where the entrance of the facility is located, the link ID of the road where the entrance is located, and an icon indicating the facility A facility located on the left side of the traveling direction of the vehicle on the road on which the vehicle is traveling, A facility ID extraction step for extracting a facility ID of a facility whose distance to the facility entrance is less than a predetermined threshold, and a facility icon corresponding to the facility ID extracted in the facility ID extraction step is stored in the facility information Provided is a navigation method characterized by executing a display control step of extracting the extracted icon and displaying the extracted icon in a mode different from the facility icon corresponding to the facility ID not extracted in the facility ID extraction step. To do.

  According to a third aspect of the present invention, there is provided a program for causing a computer to function as a navigation device mounted on a vehicle, wherein the computer is linked data that is information relating to a link indicating a road and map data that is information relating to a map. Map data storage function for storing the coordinates of the facility, the coordinates of the facility, the coordinates on the road where the entrance of the facility is located, and the link of the road where the entrance is located A map based on the facility information storage function for storing the ID and an icon indicating the facility, the current position calculation function for calculating the current position and the traveling direction of the vehicle, and the current position and traveling direction of the vehicle calculated by the current position calculation function Refers to the data storage function and facility information storage function, and the left side of the vehicle traveling direction on the road on which the vehicle is traveling A facility ID is extracted by a facility ID extraction function that extracts a facility ID of a facility that is located and has a road distance from the road to the entrance of the facility that is less than a predetermined threshold, and a facility ID extraction function. The facility icon corresponding to the extracted facility ID is extracted from the facility information storage function, and the extracted icon is different from the facility icon corresponding to the facility ID not extracted by the facility ID extracting function. Provided is a program characterized by realizing a display control function to be displayed.

  According to the navigation device of the present invention, it is possible to provide the vehicle driver with information on facilities that are easier to stop by.

1 is a system configuration diagram illustrating an example of a configuration of a navigation system 10 according to an embodiment of the present invention. It is a figure which shows an example of the data structure of the link table 280 stored in the map data storage part 28. FIG. It is a figure which shows an example of the structure of the data stored in the facility information storage part. It is a figure which shows an example of the data structure of the threshold value table 230 which the plant | facility ID extraction part 23 has. It is a conceptual diagram for demonstrating an example of the distance from the link used as object to the entrance of a facility. 4 is a conceptual diagram illustrating an example of display by a display control unit 22. FIG. 4 is a flowchart showing an example of the operation of the navigation device 20. 2 is a hardware configuration diagram illustrating an example of a computer 50 that realizes the function of the navigation device 20. FIG.

  Embodiments of the present invention will be described below.

  FIG. 1 is a system configuration diagram showing an example of the configuration of a navigation system 10 according to an embodiment of the present invention. The navigation system 10 includes a display device 11, an input device 12, a speaker 13, an antenna 14, a sensor 15, and a navigation device 20. The navigation device 20 includes a facility information storage unit 21, a display control unit 22, a facility ID extraction unit 23, a route search unit 24, a route guidance unit 25, a traffic jam information reception unit 26, a current position calculation unit 27, and a map data storage unit 28. Have

  The map data storage unit 28 stores a link table including link data that is information regarding links indicating roads, and map data that is information regarding maps. In the link table, for example, as shown in FIG. 2, data relating to a link is stored as mesh data 281 for each predetermined map area. Each mesh data 281 includes a mesh ID 282 for identifying each mesh, link data 283 that is data relating to a link in the mesh, and the like.

  Each link data 283 is connected to a link ID 284 for identifying each link, a link start node coordinate 285, a link end node coordinate 286, a link road type 287, a link length 288, and a link start node. A start connection link 289 that is identification information of another link, an end connection link 290 that is identification information of another link connected to the end node of the link, and a link name 291 are stored.

  The sensor 15 is, for example, a GPS (Global Positioning System) receiver, an azimuth sensor, a distance sensor, etc., and measures a GPS signal transmitted from a geodetic satellite, a traveling direction of the vehicle, a moving distance of the vehicle, etc. Is supplied to the current position calculation unit 27.

  Based on the measurement information supplied from the sensor 15 and the link data stored in the map data storage unit 28, the current position calculation unit 27, for example, every time the vehicle on which the navigation device 20 is mounted moves a predetermined distance (for example, 10 m). In addition, for example, the current position and traveling direction of the vehicle are calculated by map matching or the like, and information indicating the calculated current position and traveling direction of the vehicle is provided to the facility ID extracting unit 23, the route searching unit 24, and the route guiding unit 25. To do.

  When the search information including the coordinates of the departure point, the destination point, and the waypoint, the search condition, and the like is received from the user via the input device 12 such as a touch panel, the route search unit 24 stores the information in the map data storage unit 28. Based on the search information, for example, an algorithm such as Dijkstra's method is used to search for a route from the departure point to the destination point using an algorithm such as the Dijkstra method, and the search result is displayed via the display control unit 22. It is displayed on the display device 11.

  When the route search unit 24 receives information specifying the route searched for by the user via the input device 12, the facility ID extraction unit 23 and the route guide unit 25 use the route specified by the user as the guide route. Send to. The route search unit 24 uses the traffic jam information received by the traffic jam information receiving unit 26, which will be described later, to increase the cost of the link corresponding to the jammed road according to the level of the traffic jam, and You may make it search the path | route which does not pass as much as possible. Further, the route search unit 24 may perform route search using the current position of the vehicle as a departure point.

  When the route guidance unit 25 receives information indicating the guidance route from the route search unit 24, the route guidance unit 25 acquires map data near the current position of the vehicle stored in the map data storage unit 28, and uses the acquired map data. The route guidance is started by superimposing the guidance route and the car mark indicating the current position of the vehicle on the map to be sent to the display control unit 22.

  The route guidance unit 25 refers to the current position of the vehicle calculated by the current position calculation unit 27 and the link data stored in the map data storage unit 28, and is within a predetermined distance ahead of the vehicle on the guidance route. In addition, when there is a guide point for which the direction of travel exists, an image related to the guide point is displayed on the display device 11 via the display control unit 22 and sound indicating guidance is reproduced via the speaker 13. To guide the direction to go. Further, the route guidance unit 25 terminates the route guidance when the user gives an instruction to finish the route guidance or when the vehicle arrives near the destination, and notifies the facility ID extraction unit 23 to that effect. To do.

  The traffic jam information receiving unit 26 receives the traffic jam information distributed via FM multiplex broadcasting, radio wave beacons and the like via the antenna 14 and supplies the received traffic jam information to the facility ID extracting unit 23. The traffic jam information includes a link ID of a traffic jam road. It should be noted that two road IDs are associated with each other in accordance with the traveling direction even on a road that is face-to-face and one or more lanes on one side.

  In the facility information storage unit 21, for example, as shown in FIG. 3, for each facility ID 210 for identifying each facility, a facility coordinate 211 indicating coordinates on the map where the facility is located, a link serving as the entrance of the facility , The link ID 213 of the link where the entrance coordinate is located, the icon data 214 corresponding to the facility, and the genre 215 of the facility are stored in advance.

  The facility ID extraction unit 23 determines that the route guidance unit 25 has started the route guidance when the route search unit 24 is notified of the guidance route, and when the route guidance unit 25 is notified of the end of the route guidance. It is determined that the route guidance has been completed. When the route is being guided by the route guiding unit 25, the facility ID extracting unit 23 is based on the current position and traveling direction of the vehicle calculated by the current position calculating unit 27 and the link data in the map data storage unit 28. Referring to the traffic information received by the traffic information receiving unit 26, it is determined whether the oncoming lane within the first distance (for example, 10 km) ahead of the vehicle is in traffic on the guidance route.

  When the oncoming lane is congested, the facility ID extraction unit 23 is located on the left side of the guide route with respect to the traveling direction of the vehicle in the guide route within the first distance ahead of the vehicle, and is a predetermined distance from the guide route. The facility ID of the facility within (for example, within 300 m) is extracted from the facility information storage unit 21.

  Here, when the oncoming lane is congested, it may be difficult to stop at the facility on the right side of the road. Also, if the oncoming lane is congested, it may be difficult to return to the original road again after stopping at the facility on the right side of the road. Therefore, the facility ID extraction unit 23 extracts the facility ID of the facility on the left side in the traveling direction as the facility ID of the facility that is easy to stop in the section up to a predetermined distance ahead of the traveling road when the oncoming lane is congested. .

  In addition, the facility ID extraction unit 23 is a predetermined distance ahead of the road on which it is traveling in a scene where it is difficult to stop at the facility located on the right side of the traveling direction, such as the presence of a median strip even if the oncoming lane is not congested. In the above section, the facility ID of the facility on the left in the traveling direction may be extracted as the facility ID of the facility that is easy to stop by.

  On the other hand, when the route is not being guided, the facility ID extraction unit 23 determines the traffic jam information based on the current position and traveling direction of the vehicle calculated by the current position calculation unit 27 and the link data in the map data storage unit 28. With reference to the traffic jam information received by the receiving unit 26, it is determined whether or not the oncoming lane within the second distance (for example, 1 km) ahead of the vehicle is jammed on a road having the same name as the road on which the vehicle is traveling. To do.

  When the oncoming lane is congested, the facility ID extraction unit 23 is a road having the same name as the road on which the vehicle is traveling and is within the second distance ahead of the vehicle with respect to the traveling direction of the vehicle. A facility ID of a facility located on the left side of the road and within a predetermined distance (for example, within 300 m) from the road is extracted from the facility information storage unit 21.

  Here, for example, as shown in FIG. 4, the facility ID extraction unit 23 holds a threshold value table 230 having a threshold value 232 to be applied to a facility corresponding to the genre 231 for each genre 231 of each facility. Yes. The facility ID extraction unit 23 refers to the facility information storage unit 21 for each facility ID extracted in a situation where route guidance is being performed, or for each facility ID extracted in a situation where route guidance is not being performed. The genre of the facility corresponding to the facility ID is specified, and the threshold value corresponding to the specified genre is extracted from the threshold value table 230.

  Then, the facility ID extraction unit 23 extracts the facility ID of the facility whose distance from the guidance route or the road having the same name as the traveling road to the entrance of the facility is less than the extracted threshold, and extracts the extracted facility ID. Is displayed to the display control unit 22.

  For example, in the case shown in FIG. 5A, the facility A is located on the left side with respect to the traveling direction of the vehicle, and the entrance coordinates are located on the link 301 where the car mark 300 indicating the current position of the vehicle is located. is doing. In this case, the distance from the guide route ahead of the traveling direction of the vehicle or the road on which the vehicle is traveling to the entrance coordinates of the facility A is 0 m.

  In FIG. 5A, although the facility B is located on the left side with respect to the traveling direction of the vehicle, the entrance coordinates of the facility B are not on the link 301 where the car mark 300 is located, but on the link 301. And on the link 304 connected at the node 302. In this case, the distance from the guidance route ahead in the direction of travel of the vehicle or the road on which the vehicle is traveling to the entrance coordinates of the facility B is the distance (on the road) on the link 304 from the node 302 to the entrance coordinates of the facility B. Become.

  In the case of FIG. 5B, although the facility C is located on the left side with respect to the traveling direction of the vehicle, the car mark 310 indicating the current position of the vehicle is located at the entrance coordinates of the facility C. It exists not on the link 311 but on the link 314 connected to the link 311 via the link 313. In this case, the distance from the guidance route ahead in the direction of travel of the vehicle or the road on which the vehicle is traveling to the entrance coordinates of the facility B is on the link 313 and the link 314 from the node 315 to the entrance coordinates of the facility C. ) Distance.

  Such a situation may occur in a place where a highway and a general road are running side by side, a place where a living road is running under the elevated road, and the like. In the scene as shown in FIG. 5B, the facility C is located on the left side of the guide route ahead of the vehicle in the traveling direction or the road on which the vehicle is traveling, and the distance from the road to the facility entrance is short. Actually, the distance that the driver should travel to stop at the facility C is much longer than the distance from the road to the entrance of the facility.

  The facility ID extraction unit 23 of the present embodiment is not only located within a predetermined distance on the left side of the guide route ahead of the traveling direction of the vehicle or the road on which the vehicle is traveling, but also in a facility within a predetermined distance on the left side of the road. Thus, the driver is notified of the facility having a short distance from the road to the entrance of the facility as an easy-to-stop facility. Thereby, the navigation apparatus 20 can provide the driver with highly convenient information that is more realistic.

  The display control unit 22 displays the guidance route candidates received from the route search unit 24 on the display device 11. Further, when the display control unit 22 receives the map data on which the car mark indicating the guidance route and the current position of the vehicle is superimposed from the route guidance unit 25, if the facility ID is not notified from the facility ID extraction unit 23. The facility icon on the map indicated by the map data is acquired from the facility information storage unit 21 and further superimposed on the map and displayed on the display device 11.

  In addition, when the display control unit 22 is instructed to display a map by the user via the input device 12 and the facility ID is not notified from the facility ID extraction unit 23, the display near the point instructed by the user Is acquired from the map data storage unit 28, the icon of the facility on the map is acquired from the facility information storage unit 21, and the acquired icon is superimposed on the acquired map and displayed on the display device 11.

  When the facility ID is notified from the facility ID extraction unit 23, the display control unit 22 acquires the facility icon corresponding to the facility ID from the facility information storage unit 21, and the acquired icon is determined in advance. The mode is changed and displayed on the display device 11 together with other icons. For example, the display control unit 22 has a color or size different from the icon of the facility corresponding to the facility ID not notified from the facility ID extraction unit 23, or the facility corresponding to the facility ID notified from the facility ID extraction unit 23. The icon of the facility corresponding to the facility ID notified from the facility ID extraction unit 23 is displayed on the display device 11 in a mode different from the icon of the facility that has not been notified. To do.

  For example, when the route is being guided, the display control unit 22 displays the facility icon 41, the icon 43, and the icon 44 on the left side in front of the guidance route (thick line in the drawing) as shown in FIG. The other icons 42 are displayed on the display device 11 in a different mode (inverted display in the example of FIG. 6).

  When the route is not being guided, the display control unit 22 displays the facility icon 41 and the icon 42 on the front left side of the road having the same name as the road on which the vehicle is traveling, as shown in FIG. The other icons 43 and 44 are displayed on the display device 11 in a different manner.

  In the example of FIG. 6A, the range 45, the range 46, and the range 47 of the guidance route indicate the range of the first front distance (for example, 10 km) of the vehicle, and the example of FIG. 6B. , A road range 48 and a range 49 having the same name as the road on which the vehicle is traveling indicate a range of a second distance (for example, 1 km) ahead of the vehicle.

  In this way, the navigation device 20 can provide the driver with information on facilities that are easy to stop during the route guidance, and even if the route guidance is not performed, the navigation device 20 continues to travel on the same road. Within the range that can be assumed, it is possible to provide the driver with information on facilities that are easy to stop by.

  FIG. 7 is a flowchart showing an example of the operation of the navigation device 20. At a predetermined timing such as when the power is turned on, the navigation device 20 starts the operation shown in this flowchart.

  First, based on the measurement information supplied from the sensor 15 and the link data stored in the map data storage unit 28, the current position calculation unit 27 calculates the current position and traveling direction of the vehicle by map matching, for example. Information indicating the current position and the traveling direction of the completed vehicle is provided to the facility ID extracting unit 23, the route searching unit 24, and the route guiding unit 25 (S100).

  Next, the facility ID extraction unit 23 determines whether route guidance by the route guidance unit 25 is being performed (S101). When the route is being guided (S101: Yes), the facility ID extraction unit 23 is based on the current position and traveling direction of the vehicle calculated by the current position calculation unit 27 and the link data in the map data storage unit 28. Then, referring to the traffic information received by the traffic information receiving unit 26, it is determined whether or not the oncoming lane within the first distance (for example, 10 km) ahead of the vehicle is in traffic on the guidance route (S102).

  If the oncoming lane is not congested (S102: No), the current position calculation unit 27 executes the process shown in step S100 again. When the oncoming lane is congested (S102: Yes), the facility ID extraction unit 23 is located on the left side of the guidance route with respect to the traveling direction of the vehicle in the guidance route within the first distance ahead of the vehicle. A facility ID of a facility within a predetermined distance (for example, within 300 m) from the guidance route is extracted from the facility information storage unit 21 (S104), and the process shown in step S106 is executed.

  In step S101, when the route is not being guided (S101: No), the facility ID extraction unit 23 calculates the current position and traveling direction of the vehicle calculated by the current position calculation unit 27, and the link in the map data storage unit 28. Based on the data, the traffic jam information received by the traffic jam information receiving unit 26 is referred to, and on the road having the same name as the road on which the vehicle is traveling, an oncoming lane within a second distance (for example, 1 km) ahead of the vehicle It is determined whether or not there is a traffic jam (S104).

  When the oncoming lane is not congested (S104: No), the current position calculation unit 27 executes the process shown in step S100 again. When the oncoming lane is congested (S104: Yes), the facility ID extraction unit 23 is a road having the same name as the road on which the vehicle is traveling and the road within the second distance ahead of the vehicle. The facility ID of the facility located on the left side of the road with respect to the traveling direction and within a predetermined distance (for example, within 300 m) from the road is extracted from the facility information storage unit 21 (S105).

  Next, the facility ID extracting unit 23 selects one unselected facility ID from the facility IDs extracted in step S103 or S105 (S106), and refers to the facility information storage unit 21 to select the selected facility ID. The genre corresponding to the ID is specified. Then, the facility ID extraction unit 23 refers to the threshold table 230 and extracts a threshold corresponding to the identified genre (S107).

  Next, the facility ID extraction unit 23 determines whether or not the distance from the guidance route or the road having the same name as the running road to the entrance of the facility is less than the extracted threshold (S108). When the distance along the road is equal to or greater than the extracted threshold (S108: No), the facility ID extraction unit 23 executes the process shown in step S110.

  On the other hand, when the road distance is less than the extracted threshold (S108: Yes), the facility ID extraction unit 23 holds the facility ID selected in step S106 (S109), and the facility extracted in step S103 or S105. It is determined whether all IDs have been selected (S110). When all the facility IDs extracted in step S103 or S105 have not been selected (S110: No), the facility ID extraction unit 23 executes the process shown in step S106 again.

  When all the facility IDs extracted in step S103 or S105 are selected (S110: Yes), the facility ID extraction unit 23 sends the facility IDs held to the display control unit 22. The display control unit 22 refers to the facility information storage unit 21, changes the icon of the facility corresponding to the facility ID received from the facility ID extraction unit 23 to a predetermined mode, and displays it on the display device 11 (S111). ), The current position calculation unit 27 executes the process shown in step S100 again.

  FIG. 8 is a hardware configuration diagram illustrating an example of a computer 50 that implements the functions of the navigation device 20. The computer 50 includes a central processing unit (CPU) 51, a random access memory (RAM) 52, a read only memory (ROM) 53, a hard disk drive (HDD) 54, a receiver 55, an input interface (I / F) 56, and an output. An interface (I / F) 57 and a media interface (I / F) 58 are provided.

  The CPU 51 operates based on a program stored in the ROM 53 or the HDD 54 and controls each unit. The ROM 53 stores a boot program executed by the CPU 51 when the computer 50 is started up, a program depending on the hardware of the computer 50, and the like. The HDD 54 stores a program executed by the CPU 51. The receiver 55 provides the CPU 51 with the traffic jam information received via the antenna 14.

  The input interface 56 receives a signal from the input device 12 or the sensor 15 and sends it to the CPU 51. The CPU 51 controls the input device 12 and the sensor 15 via the input interface 56 and acquires a signal from the input device 12 or the sensor 15 via the input interface 56. The output interface 57 outputs the data acquired from the CPU 51 to the display device 11 or the speaker 13. The CPU 51 controls the display device 11 and the speaker 13 via the output interface 57 and outputs the generated data to the display device 11 or the speaker 13 via the output interface 57.

  The media interface 58 reads a program or data stored in the recording medium 59 and provides it to the CPU 51 via the RAM 52. The CPU 51 loads the program from the recording medium 59 onto the RAM 52 via the media interface 58 and executes the loaded program. The recording medium 59 is, for example, an optical recording medium such as a DVD (Digital Versatile Disk) or PD (Phase change rewritable disk), a magneto-optical recording medium such as an MO (Magneto-Optical disk), a tape medium, a magnetic recording medium, or a semiconductor memory. Etc.

  The CPU 51 of the computer 50 executes the program loaded on the RAM 52, thereby the facility information storage unit 21, the display control unit 22, the facility ID extraction unit 23, the route search unit 24, the route guidance unit 25, and the traffic jam information reception unit. 26, each function of the current position calculation unit 27 and the map data storage unit 28 is realized. The ROM 53 or the HDD 54 stores data in the facility information storage unit 21 and the map data storage unit 28.

  The computer 50 reads these programs from the recording medium 59 and executes them. As another example, the computer 50 is provided with a communication function and acquires these programs via a wired or wireless communication line. Also good.

  The embodiment of the present invention has been described above.

  As is clear from the above description, according to the navigation device 20 of the present embodiment, it is possible to provide information on facilities that are easier to stop to the driver of the vehicle.

  In addition, this invention is not limited to above-described embodiment, Many deformation | transformation are possible within the range of the summary.

  For example, the facility ID extraction unit 23 determines a predetermined distance to the facility for a facility that is in the direction of moving away from the destination among the facilities located on the left side in the traveling direction of the vehicle during route guidance. It may be difficult to recommend it as an easy-to-stop facility by adding distances.

  Further, the display control unit 22 may not display an icon of a facility other than a facility existing within a predetermined distance on the left side of the guide route ahead of the vehicle or the road on which the vehicle is traveling. Further, the display control unit 22 may reduce the color of the icon or decrease the brightness of the icon as the guidance route ahead of the vehicle or the distance from the road on which the vehicle is traveling becomes longer. Good.

  In the above-described embodiment, the case where the vehicle passes on the left side of the road has been described in accordance with traffic conditions such as Japan, but the present invention is not limited to this, as in other countries, The present invention can also be applied when the vehicle travels on the right side of the road. In this case, when the road condition satisfies a predetermined condition, the navigation device 20 determines a predetermined distance from the road to the entrance of the facility among the facilities on the right side of the traveling road. The icon of the facility that is less than the threshold value is displayed in a manner different from the icons of the other facilities. The predetermined condition is, for example, a case where the oncoming lane is congested or a case where a median strip exists between the oncoming lane.

DESCRIPTION OF SYMBOLS 10 ... Navigation system, 11 ... Display device, 12 ... Input device, 13 ... Speaker, 14 ... Antenna, 15 ... Sensor, 20 ... Navigation device, 21 ... Facility information storage unit, 22 ... Display control unit, 23 ... Facility ID extraction unit, 24 ... Route search unit, 25 ... Route guidance unit, 26 ... Congestion information reception unit, 27 ... Current position calculation unit 28 ... Map data storage unit 50 ... Computer 51 ... CPU 52 ... RAM 53 ... ROM 54 ... HDD 55 ... Reception 56 ... Input interface 57 ... Output interface 58 ... Media interface 59 ... Recording medium

Claims (8)

A navigation device mounted on a vehicle,
Map data storage means for storing link data, which is information related to links indicating roads, and map data, which is information related to maps;
Corresponding to the facility ID for identifying each facility, the coordinates of the facility, the coordinates on the road where the entrance of the facility is located, the link ID of the road where the entrance is located, and an icon indicating the facility Facility information storage means for storing
Current position calculating means for calculating a current position and a traveling direction of the vehicle;
The map data storage means and the facility information storage means are referred to based on the current position and traveling direction of the vehicle calculated by the current position calculating means, and the vehicle is positioned on the left side in the traveling direction of the vehicle on the road on which the vehicle is traveling. A facility ID extracting means for extracting a facility ID of a facility whose distance from the road to the entrance of the facility is less than a predetermined threshold;
When the facility ID is extracted by the facility ID extraction unit, the facility icon corresponding to the extracted facility ID is extracted from the facility information storage unit, and the extracted icon is not extracted by the facility ID extraction unit. A navigation apparatus comprising: display control means for displaying in a manner different from the facility icon corresponding to the facility ID. The navigation device according to claim 1,
The facility information storage means includes
Information indicating the genre of the facility is further stored in association with the facility ID of the facility,
The facility ID extraction means
For each facility located on the left side in the traveling direction of the vehicle on the road on which the vehicle is traveling, a facility ID of the corresponding facility is extracted using a threshold corresponding to the genre of the facility. . The navigation device according to claim 1 or 2,
A traffic information receiving means for receiving traffic information including the link ID of the road where the traffic is occurring,
The facility ID extraction means
When the opposite lane of the road on which the vehicle is traveling is congested, the facility is located on the left side of the traveling direction of the vehicle on the road on which the vehicle is traveling, and is a road from the road to the entrance of the facility. A navigation apparatus that extracts a facility ID of a facility whose distance is less than a predetermined threshold. The navigation device according to any one of claims 1 to 3,
When a guidance route is set by the user, the vehicle further comprises route guidance means for performing route guidance according to the guidance route,
The facility ID extraction means
When route guidance is being performed by the route guidance means, a range that is less than the first distance ahead of the vehicle on the guidance route is located on the left side and is a road from the guidance route to the entrance of the facility. The facility ID of the facility whose distance is less than a predetermined threshold is extracted,
When route guidance is not performed by the route guidance unit, a second road that is in front of the vehicle on a road having the same name as the road on which the vehicle is traveling and is shorter than the first distance. A navigation apparatus that extracts a facility ID of a facility that is located on the left side of a range that is less than a distance and that has a distance from the guidance route to the entrance of the facility that is less than a predetermined threshold. The navigation device according to any one of claims 1 to 4,
The display control means includes
The facility icon corresponding to the facility ID extracted by the facility ID extraction means is made different in color, size, or both from the facility icon corresponding to the facility ID not extracted by the facility ID extraction means; Alternatively, the facility icon corresponding to the facility ID extracted by the facility ID extracting unit is displayed by surrounding or blinking the facility icon corresponding to the facility ID extracted by the facility ID extracting unit with the facility ID. A navigation apparatus, characterized by being displayed in a manner different from a facility icon corresponding to a facility ID that has not been extracted by the ID extracting means. The navigation device according to any one of claims 1 to 4,
The display control means includes
A navigation apparatus characterized by not displaying a facility icon corresponding to a facility ID not extracted by the facility ID extraction means. A navigation method in a navigation device mounted on a vehicle,
The navigation device is
A current position calculating step for calculating a current position and a traveling direction of the vehicle;
Map data storage means for storing link data that is information relating to a link indicating a road and map data that is information relating to a map based on the current position and traveling direction of the vehicle calculated in the current position calculating step, and each facility The coordinates of the facility, the coordinates on the road where the entrance of the facility is located, the link ID of the road where the entrance is located, and an icon indicating the facility are stored. Referring to the facility information storage means, the facility is located on the left side in the traveling direction of the vehicle on the road on which the vehicle is traveling, and the distance from the road to the facility entrance is less than a predetermined threshold value A facility ID extraction step of extracting a facility ID of the facility of
The facility icon corresponding to the facility ID extracted in the facility ID extraction step is extracted from the facility information storage means, and the extracted icon is the facility icon corresponding to the facility ID not extracted in the facility ID extraction step; And a display control step of displaying in a different manner. A program for causing a computer to function as a navigation device mounted on a vehicle,
In the computer,
Map data storage function for storing link data that is information about links indicating roads and map data that is information about maps,
Corresponding to the facility ID for identifying each facility, the coordinates of the facility, the coordinates on the road where the entrance of the facility is located, the link ID of the road where the entrance is located, and an icon indicating the facility Facility information storage function,
A current position calculating function for calculating a current position and a traveling direction of the vehicle;
The map data storage function and the facility information storage function are referred to based on the current position and traveling direction of the vehicle calculated by the current position calculating function, and the vehicle is positioned on the left side in the traveling direction of the vehicle on the road on which the vehicle is traveling. A facility ID extracting function for extracting a facility ID of a facility whose distance from the road to the entrance of the facility is less than a predetermined threshold, and the facility ID is extracted by the facility ID extracting function. The facility icon corresponding to the extracted facility ID is extracted from the facility information storage function, and the extracted icon is the facility icon corresponding to the facility ID not extracted by the facility ID extracting function. A program for realizing a display control function for displaying in different modes.

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