JP2008045882A - Navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a navigation device enabling a driver to readily confirm the positional relation between each destination place name displayed on a required time display device and own vehicle position. <P>SOLUTION: When his own vehicle 2 approaches the required time display device 61, a CPU 41 acquires each destination place name, displayed on the required time display device 61 from display information 28, and acquires a required time to each destination place name, displayed on the required time display device 61 via a front imaging camera 52 (S11-S14). When determined that a congestion exists on a route to each destination place name, based on the congestion information stored in traffic information DB 24, the CPU 41 displays a typical map for typically showing a high-standard road, corresponding to the required time display device 61, each destination place name, the distance to each destination place name, and the time required for each destination place name on a liquid crystal display 15 (S17-S18). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a navigation device that is provided on a road and is capable of notifying a driver of display contents of a required time display device that displays a place name of a predetermined point related to a traveling direction and a current required time to the predetermined point. It is about.

2. Description of the Related Art Conventionally, on national highways and urban highways, display boards for displaying traffic time information by displaying a required time to a predetermined point are provided.
For example, a display board is provided on the upstream side of a traffic congestion point, and displays a traffic increase / decrease transition or a traffic congestion prediction result together with traffic congestion information such as the current traffic congestion point name and traffic congestion distance (for example, see Patent Document 1). .)
JP 2001-93078 A (paragraphs (0021) to (0031), FIGS. 1 to 4)

  However, in the display board described in the above-mentioned Patent Document 1, the current traffic congestion point name and the like are displayed. However, if the driver is not guided to the surrounding land at a travel destination or the like, this display board There is a problem that the positional relationship between the place name displayed on the screen and the current position may not be known.

  Therefore, the present invention has been made to solve the above-described problems. Even when the driver is not guided to the surrounding land at a travel destination or the like, the present invention is provided on the road and has a predetermined traveling direction. Provided is a navigation device capable of easily confirming a positional relationship between a place name and a vehicle position displayed on a required time display device that displays a place name and a current required time to the predetermined point. For the purpose.

  In order to achieve the above object, the navigation device according to claim 1 includes a current position detecting means (11) for detecting a current position of the host vehicle, a place name provided on the road in relation to the traveling direction and the predetermined point. A map for storing map information including installation position information of a required time display device (61) for displaying the current required time and display information including place name information indicating the place name displayed on the required time display device Information storage means (25), display device approach detection means (13) for detecting approach to the required time display device based on the map information and current position information detected by the current position detection means, and the display A place name information obtaining means (13) for obtaining place name information representing the place name displayed on the required time display device to which the host vehicle approaches based on the detection result of the apparatus approach detecting means; The own vehicle approaches the distance calculating means (13) that calculates the distance from the own vehicle to the predetermined point corresponding to the place name information based on the map information and the current position information detected by the current position detecting means. Displayed in the required time acquisition means (13, 51, 52) for acquiring the required time to the place name of the predetermined point displayed on the required time display device and the required time display device to which the host vehicle approaches. When it is determined that there is traffic jam by the traffic jam judging means (13) for judging the presence or absence of traffic jam to the predetermined point and the traffic jam judging means, up to the place name of the predetermined point acquired by the required time acquiring means An informing means (13, 15) for informing the required time and the distance to the predetermined point calculated by the distance calculating means is provided.

  Further, the navigation device according to claim 2 is the navigation device (1) according to claim 1, wherein the required time acquisition means (13, 51, 52) captures an image of the front of the host vehicle. Recognizing means for recognizing the required time corresponding to the place name of the predetermined point displayed on the required time display device in the image taken by the imaging means based on the detection result of the display device approach detecting means (13, 51), and the traffic jam judging means (13) judges the presence or absence of the traffic jam based on the recognition result by the recognition means.

  Further, the navigation device according to claim 3 is provided with receiving means (17) for receiving road traffic information including traffic jam information in the navigation device (1) according to claim 1, wherein the traffic jam judging means (13) The presence or absence of the traffic jam is determined based on the road traffic information received through the receiving means.

  Further, the navigation device according to claim 4 is the navigation device (1) according to any one of claims 1 to 3, wherein the notification means (13, 15) includes the required time and the distance. It has a display control means (13) which controls so that the map information containing the place name of the said predetermined point corresponding to required time may be displayed on a display apparatus (15).

  A navigation device according to claim 5 is the navigation device (1) according to claim 4, wherein a high-standard road including a place name of a predetermined point displayed on the required time display device is displayed for each required time display device. Schematic map information storage means (27) for storing schematic map information schematically shown is provided, and the display control means (13) displays schematic map information including place names of predetermined points corresponding to the required time on a display device (15 ) Is controlled to be displayed.

  Further, the navigation device according to claim 6 includes a current position detecting means (11) for detecting a current position of the host vehicle, a place name provided on the road with respect to the traveling direction, and a current requirement to the predetermined point. Map information storage means for storing map information including installation position information of the required time display device (61) for displaying time and display information including the place name information representing the place name displayed on the required time display device ( 25), display device approach detection means (13) for detecting approach to the required time display device based on the map information and current position information detected by the current position detection means, and the display device approach detection means A place name information acquisition means (13) for acquiring place name information indicating a place name of a predetermined point displayed on the required time display device on which the own vehicle approaches based on the detection result of Required time acquisition means (13, 51, 52) for acquiring the required time to the place name of the predetermined point displayed on the required time display device approaching, and displayed on the required time display device where the host vehicle approaches A traffic jam determining means (13) for determining the presence or absence of traffic to the predetermined point, and the location name of the predetermined point acquired by the required time acquiring means when the traffic jam determining means determines that there is a traffic jam Display control means (13) for controlling to display on the display device (15) the time required until and the map information including the place name information obtained by the place name information obtaining means.

In the navigation device according to claim 1 having the above-described configuration, a place name and a predetermined point related to the traveling direction provided on the road from the map information and the current position of the own vehicle (hereinafter referred to as “own vehicle position”). An approach to a required time display device that displays the current required time until is detected. And the place name information showing the place name currently displayed on the required time display apparatus which the own vehicle approaches is acquired, and the distance from the own vehicle position to the predetermined point corresponding to this place name information is calculated. Moreover, the required time to the predetermined point currently displayed on the required time display apparatus which the own vehicle approaches is acquired. Subsequently, it is determined whether or not there is a traffic jam from the own vehicle to a predetermined point corresponding to the place name information displayed on the required time display device. If it is determined that there is a traffic jam up to the predetermined point, the required time to the predetermined point displayed on the required time display device that the host vehicle approaches and the distance from the own vehicle to the predetermined point are calculated. Inform.
As a result, if there is a traffic jam up to a predetermined point related to the traveling direction displayed on the required time display device that the host vehicle approaches, the current required distance to the place name displayed on this required time display device is displayed. Since the distance to the predetermined point is notified with time, the driver is not guided to the surrounding land at the travel destination, etc., and the name of the predetermined point displayed on the required time display device is unknown. In addition, the positional relationship between the place name displayed on the required time display device and the current position can be easily confirmed based on the distance to the predetermined point.

In the navigation device according to the second aspect, the required time corresponding to the place name of the predetermined point displayed on the required time display device that the host vehicle approaches is image-recognized by the imaging means that images the front of the host vehicle. And based on the image recognition result of the required time corresponding to the place name of the predetermined point displayed on the required time display device, the traffic congestion of the predetermined point displayed on the required time display device to which the host vehicle approaches Determine presence or absence.
Accordingly, the required time for the host vehicle to approach in the display color of the required time displayed on the required time display device (for example, the green display color is normal and the red display color is in a traffic jam). It is possible to determine the presence or absence of traffic to the place name displayed on the display device, and to quickly determine the presence or absence of traffic.

  In the navigation device according to claim 3, the traffic jam to the place name of the predetermined point displayed on the required time display device on which the host vehicle approaches based on the traffic jam information included in the road traffic information received via the receiving means. Therefore, it is possible to determine the presence or absence of traffic jam based on the latest traffic jam information.

In the navigation device according to claim 4, when it is determined that there is a traffic jam up to a predetermined point displayed on the required time display device, the predetermined time displayed on the required time display device approached by the host vehicle. In addition to the required time to the point and the distance to the predetermined point, map information including the place name of the predetermined point is displayed on the display device.
As a result, even if the driver is not guided to the surrounding land at the travel destination and does not know the place name of the predetermined point displayed on the required time display device, only the required time and distance to this place name can be obtained. The location of the place name can be confirmed on the map displayed on the display device. For this reason, the positional relationship between the place name displayed on the required time display device and the current position can be more easily confirmed.

In the navigation device according to claim 5, when it is determined that there is traffic congestion up to a predetermined point displayed on the required time display device, the predetermined time displayed on the required time display device to which the host vehicle approaches. In addition to the required time to the point and the distance to the predetermined point, schematic map information schematically showing the high-standard road including the place name of the predetermined point is displayed on the display device.
As a result, even if the driver is not guided to the surrounding land at the travel destination and does not know the place name of the predetermined point displayed on the required time display device, only the required time and distance to this place name can be obtained. In addition, the location of the place name can be confirmed on a map schematically showing the high-standard road displayed on the display device. For this reason, the positional relationship between the place name displayed on the required time display device and the current position can be more easily confirmed.
In addition, a highway national highway, a city highway, an automobile exclusive road, a general toll road, a 1-digit or 2-digit national road is called a high standard road. National roads, major local roads, prefectural roads and municipal roads with more than three digits are called general roads. A street such as a street narrower than a general road is called a narrow street.

Further, in the navigation device according to claim 6, the place name and the location of the predetermined point in the traveling direction provided on the road from the map information and the current position of the own vehicle (hereinafter referred to as “own vehicle position”). An approach to a required time display device that displays the current required time is detected. And the place name information showing the place name currently displayed on the required time display apparatus which the own vehicle approaches is acquired. Moreover, the required time to the predetermined point currently displayed on the required time display apparatus which the own vehicle approaches is acquired. Subsequently, it is determined whether or not there is a traffic jam from the own vehicle to a predetermined point displayed on the required time display device. If it is determined that there is a traffic jam up to the predetermined point, the required time to the predetermined point displayed on the required time display device that the host vehicle approaches and the place name displayed on the required time display device Is displayed on the display device.
As a result, if there is a traffic jam up to a predetermined point related to the traveling direction displayed on the required time display device that the host vehicle approaches, the current required distance to the place name displayed on this required time display device is displayed. With time, map information including the place name of the predetermined point is displayed on the display device. For this reason, even if the driver is not guided to the surrounding land at a travel destination or the like and does not know the place name of the predetermined point displayed on the required time display device, the predetermined point displayed on the display device It becomes possible to easily confirm the positional relationship between the place name displayed on the required time display device and the current position based on the map information including the place name.

  DETAILED DESCRIPTION Hereinafter, a navigation device according to the present invention will be described in detail with reference to the drawings based on an embodiment.

  First, a schematic configuration of a vehicle on which a navigation device according to the present embodiment is mounted will be described with reference to FIG. FIG. 1 is a schematic configuration diagram of a vehicle 2 on which a navigation device 1 according to the present embodiment is mounted.

  As shown in FIG. 1, a camera ECU (Electronic Control Unit) 51 that drives and controls a CCD camera or the like is electrically connected to the navigation control unit 13 of the navigation device 1 installed on the vehicle 2. In addition, a front imaging camera 52 configured by a CCD camera or the like and imaging the front of the vehicle is installed near the rear mirror of the vehicle 2.

  The navigation device 1 is provided on the center console or the panel surface of the vehicle 2. The navigation device 1 displays a map and a search route to the destination on the liquid crystal display 15, and outputs voice guidance related to route guidance through the speaker 16. In addition, the navigation device 1 transmits a control signal to the camera ECU 51 as will be described later when a predetermined condition is satisfied, and is provided on a highway automobile national road or a city highway by the front imaging camera 52 and travels in the direction of travel. The image recognition data of the required time display device 61 (see FIG. 5) for displaying the place name of the predetermined point and the current required time to the predetermined point are received. Further, based on the control signal received from the navigation device 1, the camera ECU 51 performs image processing on the video signal of the front imaging camera 52 to detect a required time display device 61 provided in front, and this required time display device. A front imaging camera 52 is connected to an electronic control unit that detects a place name, a required time, and the like displayed on 61 by image recognition and outputs a detection signal.

  Next, the configuration related to the control system of the vehicle 2 according to the present embodiment will be described with reference to FIGS. FIG. 2 is a block diagram schematically showing a control system centered on the navigation device 1 mounted on the vehicle 2. FIG. 3 is an explanatory diagram for explaining communication between the navigation device 1 and the road traffic information center (VICS: registered trademark) 3.

  As shown in FIG. 2, the control system of the vehicle 2 is configured based on a navigation device 1 and a camera ECU 51 that is electrically connected to the navigation device 1. The device is connected.

  The navigation device 1 includes a current position detection processing unit 11 that detects a current position of the host vehicle 2 (hereinafter referred to as “own vehicle position”), a data recording unit 12 that records various data, and input information. Based on the navigation control unit 13 for performing various arithmetic processes, the operation unit 14 for receiving operations from the operator, the liquid crystal display 15 for displaying information such as a map to the operator, and voice guidance for route guidance. And a communication device 17 that communicates with an information center such as a road traffic information center (VICS: registered trademark). In addition, a vehicle speed sensor 21 that detects the traveling speed of the host vehicle 2 is connected to the navigation control unit 13.

  As shown in FIG. 3, the navigation apparatus 1 is connected to a road traffic information center (VICS: registered trademark) 3 via a network 4. The navigation device 1 collects information on traffic congestion systems such as the police and the Japan Highway Public Corporation from the Road Traffic Information Center (VICS: registered trademark) 3 via the network 4 and information on traffic congestion etc. It is configured to be able to receive road traffic information such as regulation information every predetermined time. The road traffic information is, for example, detailed information on road traffic information such as road traffic information related to road traffic congestion, traffic regulation information due to road construction, construction work, and the like. In the case of road traffic information, the detailed information includes the VICS link ID, the actual length of the traffic jam, the expected time of traffic jam cancellation, etc., and in the case of traffic regulation information, the continuation of the VICS link ID, road construction, building construction, etc. It is a period, a traffic stop, a one-sided alternate traffic, a traffic regulation type such as a lane regulation, a traffic regulation time zone, and the like.

  The network 4 includes, for example, a LAN (Local Area Network), a WAN (Wide Area Network), an intranet, a mobile phone line network, a telephone line network, a public communication line network, a dedicated communication line network, a communication line network such as the Internet, etc. Can be used. A communication system using CS broadcasting, BS broadcasting, terrestrial digital television broadcasting, FM multiplex broadcasting, or the like by a broadcasting satellite can also be used. Furthermore, a communication system such as a non-stop automatic fee payment system (ETC) or a narrow area communication system (DSRC) used in an intelligent road traffic system (ITS) can also be used.

Below, each component which comprises the navigation apparatus 1 is demonstrated.
As shown in FIG. 2, the current location detection processing unit 11 includes a GPS 31, a geomagnetic sensor 32, a distance sensor 33, a steering sensor 34, a gyro sensor 35 as an orientation detection unit, an altimeter (not shown), and the like. It is possible to detect the position and direction of the vehicle 2, the distance to a target (for example, an intersection, a required time display device, a store, etc.).

  Specifically, the GPS 31 detects the current position and current time of the host vehicle 2 on the earth by receiving radio waves generated by an artificial satellite, and the geomagnetic sensor 32 automatically detects the geomagnetism. The vehicle direction is detected, and the distance sensor 33 detects a distance between predetermined positions on the road. Here, as the distance sensor 33, for example, a rotational speed of a wheel (not shown) of the host vehicle 2 is measured, a sensor that detects a distance based on the measured rotational speed, an acceleration is measured, and the measured acceleration is measured. A sensor or the like that detects the distance by integrating twice can be used.

  Further, the steering sensor 34 detects the rudder angle of the host vehicle 2. Here, as the steering sensor 34, for example, an optical rotation sensor attached to a rotating portion of a steering wheel (not shown), a rotation resistance sensor, an angle sensor attached to a wheel, or the like is used.

  The gyro sensor 35 detects the turning angle of the host vehicle 2. Here, as the gyro sensor 35, for example, a gas rate gyro, a vibration gyro, or the like is used. Further, by integrating the turning angle detected by the gyro sensor 35, the vehicle direction can be detected.

  Further, the data recording unit 12 reads an external storage device and a hard disk (not shown) as a storage medium, a traffic information DB 24, a map information DB 25, a predetermined program, and the like stored in the hard disk, and stores predetermined data on the hard disk. And a recording head (not shown) as a driver for writing. In this embodiment, a hard disk is used as an external storage device and a storage medium of the data recording unit 12. However, in addition to the hard disk, a magnetic disk such as a flexible disk can be used as the external storage device. Also, a memory card, magnetic tape, magnetic drum, CD, MD, DVD, optical disk, MO, IC card, optical card, etc. can be used as an external storage device.

  In addition, the traffic information DB 24 includes road traffic information related to the current road traffic congestion, which is composed of the actual length of the traffic jam received from the road traffic information center (VICS: registered trademark) 3, the time when the traffic jam is expected to be resolved, and the like. The traffic information created from is stored. In addition, the traffic information DB 24 stores traffic regulation information created from road traffic information received from the Road Traffic Information Center (VICS: registered trademark) 3 regarding traffic regulation information, traffic regulation information such as building construction, etc. Has been.

The map information DB 25 stores navigation map information 26 used for travel guidance and route search of the navigation device 1. Here, the navigation map information 26 includes various information necessary for route guidance and map display. For example, new road information for identifying each new road, map display data for displaying a map, Intersection data relating to each intersection, node data relating to node points, link data relating to roads (links) as a kind of facility, search data for searching for routes, stores relating to POI (Point of Interest) such as shops that are a kind of facility It is composed of data, search data for searching points, and the like.
The contents of the map information DB 25 are updated by downloading update information distributed from the information distribution center (not shown) via the communication device 17.

  Here, in particular, the map display data is divided into 4 (length 1/2), 16 (1/4), and 64 (1/8) based on a secondary mesh partitioned by 10 km × 10 km. Each unit is configured so that the data amount of each unit is approximately the same level. The smallest 64 division size unit is about 1.25 km square.

  Node data includes actual road branch points (including intersections, T-junctions, etc.), node point coordinates (positions) set for each road according to the radius of curvature, etc., nodes A node attribute indicating whether or not is a node corresponding to an intersection, a connection link number list which is a list of link IDs which are identification numbers of links connected to the node, and a list of node numbers of nodes adjacent to the node via the link Are recorded on the adjacent node number list, the height (altitude) of each node point, and the like.

Link data includes the width of the road to which the link belongs, the gradient, the cant, the bank, the road surface condition, the number of lanes on the road, the number of lanes decreasing, and the width of the link data. The data indicating the radius, crossing, T-junction, corner entrance and exit, etc. with respect to the corner, data representing the downhill road, uphill road, etc. In addition to roads such as national roads, prefectural roads, narrow streets, etc., data representing toll roads such as national highways, urban highways, general toll roads, and toll bridges are recorded. Furthermore, regarding toll roads, data relating to entrance roads (rampways), toll gates (interchanges) and the like of toll roads are recorded.
Hereinafter, a highway national highway, an urban highway, an automobile exclusive road, a general toll road, a one-digit or two-digit national road is referred to as a high-standard road. National roads, major local roads, prefectural roads and municipal roads with more than three digits are called general roads. A street such as a street narrower than a general road is called a narrow street.

  In addition, as search data, data used for searching and displaying a route to a set destination is recorded, and costs for passing through a node (hereinafter referred to as node cost) and roads are configured. Cost data used for calculating a search cost including a link cost (hereinafter referred to as a link cost), route display data for displaying a guidance route selected by the route search on a map of the liquid crystal display 15, and the like. It is configured.

  Further, as store data, data on POIs such as hotels, hospitals, gas stations, parking lots, and tourist facilities in each region are recorded together with IDs that identify the POIs. In the map information DB 25, sound output data for outputting predetermined information by the speaker 16 of the navigation device 1 is also recorded.

Further, in the map information DB 25, each predetermined point displayed on the required time display device 61 is displayed for each required time display device 61 provided on a high-standard road such as a highway automobile national road, an urban expressway, and an automobile exclusive road. High-standard road schematic map information 27 for storing a schematic map (eg, a so-called highway map or the like, see FIG. 7) schematically showing a high-standard road including the place name is stored.
Further, in the map information DB 25, the coordinate data in which the required time display device 61 is arranged for each required time display device 61 provided on a high-standard road such as a highway automobile national road, a city highway, and an automobile exclusive road. (For example, latitude and longitude data), place name information indicating the place name (hereinafter referred to as “destination place name”) of each predetermined point displayed on the required time display device 61, and the required time display device Stored is display information 28 for storing each required time during normal traveling from the point where 61 is installed to each destination name (hereinafter referred to as “normal time required time”).

As shown in FIG. 2, the navigation control unit 13 constituting the navigation device 1 is an arithmetic device that performs overall control of the navigation device 1, a CPU 41 as a control device, and working when the CPU 41 performs various arithmetic processes. In addition to being used as a memory, the RAM 42 that stores route data when a route is searched, a control program, and when there is a traffic jam ahead in the direction of travel when approaching a required time display device 61 described later. In this case, a required time information display processing program (see FIG. 4) for displaying the current required time to each predetermined point displayed on the required time display device 61 together with a schematic diagram of the high standard road is stored. ROM 43, an internal storage device such as a flash memory 44 for storing a program read from the ROM 43, A timer 45 for measuring between.
Here, a semiconductor memory, a magnetic core, or the like is used as the RAM 42, the ROM 43, the flash memory 44, or the like. As the arithmetic device and the control device, an MPU or the like can be used instead of the CPU 41.

  In this embodiment, various programs are stored in the ROM 43, and various data are stored in the data recording unit 12. However, the programs, data, and the like are stored in the same external storage device, memory card, and the like. It is also possible to read a program, data, etc. from the above and write it into the flash memory 44. Further, the program, data, etc. can be updated by exchanging a memory card or the like.

  Furthermore, the navigation control unit 13 is electrically connected to peripheral devices (actuators) of the operation unit 14, the liquid crystal display 15, the speaker 16, and the communication device 17.

  The operation unit 14 is operated when correcting the current location at the start of travel, inputting a departure point as a guidance start point and a destination as a guidance end point, or searching for information about facilities, and the like. And a plurality of operation switches. The navigation control unit 13 performs control to execute various corresponding operations based on switch signals output by pressing the switches. As the operation unit 14, a keyboard, a mouse, a barcode reader, a remote control device for remote operation, a joystick, a light pen, a stylus pen, or the like can be used. Furthermore, it can also be configured by a touch panel provided on the front surface of the liquid crystal display 15.

  The liquid crystal display 15 also has operation guidance, operation menus, key guidance, guidance route from the current location to the destination, guidance information along the guidance route, traffic information, news, weather forecast, time, mail, TV program, etc. When there is a traffic jam ahead of the traveling direction when approaching the required time display device 61 as will be described later, a high name including the place name of each predetermined point displayed on the required time display device 61 is displayed. Along with a schematic diagram of a standard road, the current required time to each predetermined point displayed on the required time display device 61 is displayed. Instead of the liquid crystal display 15, it is also possible to use a CRT display, a plasma display, or the like, or a hologram device that projects a hologram onto the windshield of a vehicle.

  In addition, the speaker 26 outputs a voice guidance that guides the traveling along the guidance route and the name of the facility that is the selected destination based on an instruction from the navigation control unit 23. Here, examples of the voice guidance to be guided include “200m ahead, turn right at XX intersection” and “There is traffic jam to XX ahead”. In addition to the synthesized voice, the voice output from the speaker 16 can output various sound effects and various guidance information recorded in advance on a tape, a memory, or the like.

  The communication device 17 is a communication unit that communicates with an information distribution center (not shown), and transmits / receives the latest version of updated map information and the like with the information distribution center. In addition to the information distribution center, information such as traffic congestion information, traffic regulation information, parking lot information, traffic accident information, and service area congestion transmitted from the road traffic information center (VICS: registered trademark) 3 etc. The road traffic information is received as a radio beacon, an optical beacon, or the like via a radio beacon device, an optical beacon device, or the like arranged along the road. The communication device 17 is a network device that enables communication in a communication system such as a LAN, a WAN, an intranet, a mobile phone network, a telephone network, a public communication network, a dedicated communication network, and a communication network such as the Internet. is there. Furthermore, in addition to the information from the road traffic information center (VICS: registered trademark) 3, the communication device 17 receives FM multiplex information including information such as news and weather forecast as FM multiplex broadcast via the FM broadcast station. An FM receiver is provided. The beacon receiver and the FM receiver are unitized and arranged as a VICS receiver, but can be arranged separately.

  In addition, the camera ECU 51 includes a data receiving unit 51A that receives control information transmitted from the navigation control unit 13, and controls the front imaging camera 52 and performs image recognition based on the received control information. 51B is provided.

Next, when there is a traffic jam ahead in the traveling direction when approaching the required time display device 61 executed by the CPU 41 of the navigation device 1 configured as described above, it is displayed on the required time display device 61. The required time information display processing for displaying the current required time to each predetermined point together with schematic diagrams of high-standard roads such as highway national highways, city highways, and automobile exclusive roads will be described with reference to FIGS.
FIG. 4 shows a required time information display process for displaying the current required time to each predetermined point displayed on the required time display device 61 executed by the CPU 41 of the navigation device 1 according to this embodiment together with a schematic diagram of a high-standard road. It is a flowchart which shows. FIG. 5 is an explanatory diagram for explaining a state in which the host vehicle 2 has come before the required time display device 61 provided on the road. FIG. 6 is a diagram showing an example of required time information displayed on the required time display device 61. FIG. 7 is a diagram showing an example in which the required time and the like are displayed on the liquid crystal display 15 together with the schematic map schematically showing the highway corresponding to FIG.
Note that the program shown in the flowchart of FIG. 4 is stored in the ROM 43 provided in the navigation control unit 13 of the navigation device 1 and is executed by the CPU 41 at regular intervals (for example, every 10 msec to 100 msec).

  As shown in FIG. 4, first, in step (hereinafter abbreviated as “S”) 11, the CPU 41 causes the current position detection processing unit 11 to detect the current position of the own vehicle 2 (hereinafter referred to as “own vehicle position”) and the own vehicle. The vehicle direction indicating the direction of 2 is detected, and coordinate data (for example, latitude and longitude data) indicating the vehicle position and the vehicle direction are stored in the RAM 42. Further, the CPU 41 reads out the coordinate data of the home location (for example, the latitude and longitude of the home location, etc., hereinafter referred to as “registered home location”) registered in advance in the data recording unit 12, and this registered home location. Is stored in the RAM 42. Then, the CPU 41 reads out the coordinate data of the registered home position and the coordinate data of the own vehicle position from the RAM 42, and the vehicle position is a long distance point away from the registered home position by a predetermined distance or more (for example, 100 km or more). A determination process is performed to determine whether or not.

And when the own vehicle position is not a long distance point away from the registered home position by a predetermined distance or more (for example, 100 km or more) (S11: NO), the CPU 41 ends the process.
On the other hand, if the vehicle position is a long distance point away from the registered home position by a predetermined distance or more (for example, 100 km or more) (S11: YES), the CPU 41 proceeds to the process of S12. In S12, the CPU 41 uses the display information 28 stored in the map information DB 25 to display the coordinate data (for example, latitude and longitude) of the required time display device 61 that is ahead of the traveling direction of the host vehicle 2 on the guidance route. Data, hereinafter referred to as “display device installation position”), and is stored in the RAM 42. And CPU41 reads the coordinate data of the own vehicle position, and the coordinate data of a display apparatus installation position from RAM42, and the own vehicle 2 is less than predetermined distance from the required time display apparatus 61 (for example, it is less than about 100m-500m). A determination process for determining whether or not the vehicle has approached is executed.

And when the own vehicle 2 is not approaching within a predetermined distance (for example, within about 100 m to 500 m) from the required time display device 61 (S12: NO), the CPU 41 ends the process.
On the other hand, when the own vehicle 2 approaches within a predetermined distance (for example, within about 100 m to 500 m) from the required time display device 61 (S12: YES), the CPU 41 proceeds to the process of S13. In S <b> 13, the CPU 41 obtains the place name information indicating the place name of each predetermined point displayed on the required time display device 61 where the host vehicle 2 approaches from the display information 28 stored in the map information DB 25, that is, the place name information indicating each destination place name. Read out and store in RAM 42.

  For example, as shown in FIGS. 5 and 6, the required time display device 61 includes destination names 61 </ b> A, 61 </ b> B, 61 </ b> C, that is, “To Toyota IC”, “To Nagoya IC”, and “To Komaki IC”. Are displayed in order. When the host vehicle 2 approaches within a predetermined distance (for example, within about 100 m to 500 m) from the required time display device 61 (S12: YES), the CPU 41 displays the required time display device 61. As the location name information corresponding to the displayed destination name 61A, 61B, 61C, “Toyota IC” corresponding to the first destination name 61A arranged from the top, and destination name 61B arranged second from the top The corresponding “Nagoya IC” and the “Komaki IC” corresponding to the destination name 61C arranged third from the top are read from the display information 28 stored in the map information DB 25 and stored in the RAM 42 in order.

And CPU41 is displayed on each required time display part 62-64 (refer FIG. 6) of the required time display apparatus 61 which approached via the camera 52 for front imaging fixed to the room mirror 55 (refer FIG. 5). Each required time is recognized by image recognition and stored in the RAM 42.
For example, as shown in FIG. 6, the CPU 41 moves the required time display units 62 to 64 (see FIG. 5) of the required time display device 61 approached via the front imaging camera 52 fixed to the room mirror 55 (see FIG. 5). 6), the required times of 25 minutes, 35 minutes, and 60 minutes are recognized by image recognition in order from the top and stored in the RAM.
The time display displayed on each of the required time display units 62 to 64 of the required time display device 61 is “green” when the required time from the required time display device 61 to each destination name is normal. It is displayed in “red” or “orange” when there is a traffic jam.

  Subsequently, in S15, the CPU 41 re-reads the place name information indicating each destination place name displayed on the required time display device 61 that is approaching from the RAM 42, and coordinates data (for example, for example) corresponding to each place name information (for example, Latitude and longitude data) is read out from the navigation map information 26 stored in the map information DB 25, a route search from the vehicle position to each point corresponding to each destination name is performed, and each route is stored in the RAM 42. To remember. Then, the CPU 41 reads each route from the vehicle position to each destination name from the RAM 42, and on each route from the vehicle position to each destination name based on the traffic jam information stored in the traffic information DB 24 (for example, , On a high-speed automobile national highway or a city highway that is running.) A determination process for determining whether there is a traffic jam is executed.

  The CPU 41 recognizes the image of the required time display device 61 by the front imaging camera 52, and the time display displayed on each of the required time display units 62 to 64 of the required time display device 61 is “green”. In this case, it is determined that the vehicle is in a normal driving state, that is, there is no traffic jam on each route from the position of the vehicle to each destination name (for example, on a highway on a national highway or a city highway). On the other hand, when the time display displayed on each of the required time display sections 62 to 64 is “red” or “orange” (for example, traveling on each route from the vehicle position to each destination name) The determination process may be executed to determine that there is a traffic jam. As a result, it is possible to simultaneously acquire the current required time from the vehicle position to each destination name and the information on the presence or absence of traffic congestion via the front imaging camera 52.

Then, when there is no traffic jam on each searched route from the vehicle position to each point corresponding to each destination name (for example, on a highway driving a national highway or a city highway) (S15). : NO), CPU41 complete | finishes the said process.
On the other hand, when there is a traffic jam on each route searched from the vehicle position to each point corresponding to each destination name (for example, on a highway driving a national highway or an urban highway) (S15). : YES), CPU41 transfers to the process of S16. In S16, the CPU 41 reads each route from the vehicle position to each point corresponding to each destination name from the RAM 42, calculates a distance from the vehicle position to each point corresponding to each destination name, and stores it in the RAM 42. Remember. In addition, the CPU 41 has traffic information on each route from the own vehicle position to each point corresponding to each destination name (for example, traffic jam start point coordinates, actual traffic jam length, traffic jam end point coordinates, etc.). Is read from the traffic information DB 24 and stored in the RAM 42.

Subsequently, in S <b> 17, the CPU 41 displays a schematic map (for example, a so-called highway map or the like) schematically showing a high standard road including the place names of the respective predetermined points displayed on the required time display device 61. It is read from the high standard road schematic map information 27 in the DB 25 and displayed on the liquid crystal display 15. In addition, the CPU 41 displays a vehicle position mark representing the vehicle position on the schematic map, reads traffic congestion information on the route to each destination location name stored in the RAM 42 in S16, and stores a traffic congestion section on the schematic map. Is displayed with an arrow mark or the like. In addition, the CPU 41 stores place name information indicating each destination place name displayed on the required time display device 61 stored in the RAM 42 in S13 and each location corresponding to each destination name from the own vehicle position stored in the RAM 42 in S16. The distance to the point is read out and displayed on the liquid crystal display 15 for each destination name. Further, the CPU 41 reads out the current required times displayed on the required time display units 62 to 64 of the required time display device 61 stored in the RAM 42 in S14 and displays them on the liquid crystal display 15 for each destination name. . Further, the CPU 41 reads “normal time required time” up to each destination name displayed on the required time display device 61 from the display information 28 of the map information DB 25 and displays it on the liquid crystal display 15 for each destination name.
The CPU 41 may provide voice guidance of the current required time to each destination name and the presence or absence of traffic through the speaker 16.

For example, as shown in FIG. 7, the CPU 41 is a model of a city highway including each destination name “Toyota IC”, “Nagoya IC”, and “Komaki IC” displayed on the required time display device 61 shown in FIG. A map 71 is displayed on the left half of the liquid crystal display 15. Further, the CPU 41 displays a vehicle position mark 72 representing the vehicle position on the schematic map 71. In addition, the CPU 41 displays the traffic jam section on the schematic map 71 with the thick red line arrows 73 and 74. Further, the display frames 77, 78, 79 are displayed in the vertical direction on the right half of the liquid crystal display 15, respectively. Then, the CPU 41 displays, in each display frame 77 to 79, each destination name displayed on the required time display device 61, a distance from the vehicle position to each destination name, a normal time required to each destination name, and The current required times displayed on the required time display units 62, 63, 64 of the required time display device 61 are displayed. For example, the CPU 41 displays the destination place name “Komaki IC” and the distance “65 km” from the vehicle position to the destination place name “Komaki IC” in the upper part of the top display frame 77. Further, the CPU 41 displays “normally 35 minutes” as a normal required time from the vehicle position to “Komaki IC” in the lower part of the display frame 77, and “red” on the required time display 64 of the required time display device 61. “Current 60 minutes” is displayed as the time displayed in.
The display colors of “current 60 minutes”, “current 35 minutes”, and “current 25 minutes” displayed in the display frames 77 to 79 are displayed on the required time display units 62, 63, It may be displayed in the same color as the display color of each current required time displayed in 64.

  In S <b> 18, the CPU 41 blinks and displays each destination name and traffic congestion section on the schematic map displayed on the liquid crystal display 15, and ends the processing after highlighting.

  Therefore, in the navigation device 1 according to the present embodiment, when the host vehicle 2 approaches the required time display device 61 installed at a far distance point such as 100 km or more from the home, the CPU 41 determines the required time. Each destination name displayed on the display device 61 is acquired from the display information 28, and the required time to each destination name displayed on the required time display device 61 is acquired via the front imaging camera 52 ( S11-S14). In addition, the CPU 41 searches for a route to each destination name. If the CPU 41 determines that there is traffic on the route from the vehicle position to each destination name based on the traffic jam information stored in the traffic information DB 24, the CPU 41 moves from the vehicle position to each destination name. After calculating the distance of the route and storing it in the RAM 42, a schematic map schematically showing the high standard road corresponding to the required time display device 61 is read from the high standard road schematic map information 27 and displayed on the liquid crystal display 15. The vehicle position mark indicating the vehicle position and the traffic jam section are displayed on the schematic map. Further, the CPU 41 obtains each destination name, a distance from the vehicle position to each destination name, a normal time required for each destination name, and each destination name displayed on the required time display device 61. The required time is displayed on the liquid crystal display 15 (S17 to S18).

  Thereby, even when the place name of each destination place name displayed on the required time display device 61 to which the host vehicle 2 approaches is unknown, the current name up to the place name of the predetermined point displayed on the required time display device 61 is displayed. Along with the required time, a schematic map schematically showing a high-standard road including the place name of the predetermined point is displayed on the liquid crystal display 15, and a vehicle position mark indicating a traffic jam section and the vehicle position is displayed on the schematic map, In addition, the distance from the vehicle position to each destination name is displayed on the liquid crystal display 15. For this reason, even if the driver is not guided to the surrounding land at the travel destination and does not know the name of each destination displayed on this required time display device, only the required time and distance to each destination name are displayed. In addition, the location of the place name is confirmed on the schematic map schematically showing the high-standard road displayed on the liquid crystal display 15, and the destination place name displayed on the required time display device and the vehicle position The positional relationship can be easily confirmed.

Further, the CPU 41 determines the presence or absence of traffic to each destination name displayed on the required time display device 61 that the host vehicle 2 approaches based on the traffic jam information stored in the traffic information DB 24. It is possible to determine the presence or absence of traffic jam based on the information.
It should be noted that the required time for the host vehicle 2 to approach with the display color of the required time displayed on the required time display device 61 (for example, the green display color during normal times and the red display color during traffic jams). By determining the presence / absence of traffic to each destination name displayed on the time display device 61, the presence / absence of traffic jam can be detected even when the traffic information is not received from the road traffic information center (VICS: registered trademark) 3. Judgment can be made quickly.

  In addition, this invention is not limited to the said Example, Of course, various improvement and deformation | transformation are possible within the range which does not deviate from the summary of this invention. For example, the following may be used.

  (A) In step 17, the required time stored in the RAM 42 in S13 is not displayed without displaying a schematic map schematically showing the high-standard road including each destination name displayed on the required time display device 61. The place name information representing each destination place name displayed on the display device 61 and the distance from the own vehicle position stored in the RAM 42 in S16 to each point corresponding to each destination place name are read out, and a liquid crystal display is displayed for each destination place name. 15 is displayed. Further, the CPU 41 reads out the current required times displayed on the required time display units 62 to 64 of the required time display device 61 stored in the RAM 42 in S14 and displays them on the liquid crystal display 15 for each destination name. . Further, the CPU 41 reads out “normal time required time” up to each destination name displayed on the required time display device 61 from the display information 28 of the map information DB 25 and displays it on the liquid crystal display 15 for each destination name. It may be.

  As a result, if there is a traffic jam to each destination name displayed on the required time display device 61 that the host vehicle 2 approaches, the current requirements to each destination name displayed on this required time display device 61 are displayed. Since the distance to each destination name is notified with time, the driver is not guided to the surrounding land at the travel destination and the like, and the name of each destination displayed on the required time display device 61 is unknown In this case, the positional relationship between each destination name displayed on the required time display device 61 and the own vehicle position can be easily confirmed based on the distance from the own vehicle position to each destination name. In addition, since it is not necessary to store the high standard road schematic map information 27, the storage capacity of the data recording unit 12 can be reduced.

For example, as shown in FIG. 8, the CPU 41 provides a column of “Required time information” on the left side of the liquid crystal display 15, and each destination name displayed on the required time display device 61 and each destination name from the own vehicle position. And the current required times displayed in the required time display units 62 to 64 of the required time display device 61 are displayed for each destination name. In addition, the CPU 41 provides a “smooth time” column on the right side of the liquid crystal display 15 and displays the normal time required up to each destination name displayed on the required time display device 61. For example, in the case of the required time display device 61 in FIG. 6, the CPU 41 displays the destination name “To Toyota IC” at the top of the “Required time information” column and the distance “20 km” to this “Toyota IC”. And the current required time “25 minutes” displayed in the required time display section 62 of the required time display device 61 are displayed. Further, the CPU 41 displays the normal time required until “Toyota IC”, that is, the required time “15 minutes” when there is no traffic jam, on the uppermost side of the “smooth time” column.
Here, FIG. 8 is a diagram showing another example in which the required time information and the like are displayed on the liquid crystal display 15 corresponding to FIG.

(B) In step 17, for example, as shown in FIG. 9, the CPU 41 may not display the distance from the vehicle position to each point corresponding to each destination name instead of FIG. Thereby, since it is not necessary to execute the process of step 16, the required time information display process can be speeded up. In addition, a schematic map 71 schematically showing high-standard roads including destination names “Komaki”, “Nagoya”, and “Toyota” displayed on the required time display device 61 is displayed on the left side of the liquid crystal display 15. A vehicle position mark 72 representing the vehicle position is displayed. For this reason, even if the driver is not guided to the surrounding land at the travel destination or the like and does not know the name of each destination displayed on the required time display device 61, each of the information displayed on the liquid crystal display 15 is displayed. It is possible to easily confirm the positional relationship between the place name displayed on the required time display device 61 and the vehicle position based on the map information including the destination place name.
Here, FIG. 9 is a diagram showing another example in which the required time information and the like are displayed on the liquid crystal display 15 together with the schematic map schematically showing the highway corresponding to FIG.

  (C) In step 17, the CPU 41 replaces the current required times displayed on the required time display units 62 to 64 of the required time display device 61 stored in the RAM 42 in S14 with the current vehicle position. The route search to each destination name is performed, and the time required on each route from the vehicle position to each destination name is calculated based on the traffic jam information stored in the traffic information DB 24, and the current time to each destination name is calculated. You may make it display on the liquid crystal display 15 as required time. As a result, the driver can be notified of the more accurate and latest required time to each destination name.

  (D) In step 14, the operating company of the high-speed automobile national highway or the like operates a communication line network such as an intranet, a mobile phone line network, a telephone line network, a public communication line network, a dedicated communication line network, the Internet, or a non-stop automatic fee. The required time to each destination name displayed on each required time display device 61 provided via a communication system such as a payment system (ETC) is acquired via the network 4 and the communication device 17 and stored in the RAM 42. You may make it do. Thereby, it is not necessary to recognize each required time displayed on each required time display unit 62 to 64 of the required time display device 61 approached via the front imaging camera 52 by image recognition.

  (E) In step 15 above, an operating company such as a high-speed automobile national highway can establish a communication line network such as an intranet, a mobile phone line network, a telephone line network, a public communication line network, a dedicated communication line network, the Internet, or a non-stop automatic toll Traffic congestion information up to each destination name displayed on each required time display device 61 provided via a communication system such as a payment system (ETC) is acquired via the network 4 and the communication device 17, and the traffic congestion information On the basis of the vehicle position to each destination name (for example, on a highway driving a national highway or an urban highway), a determination process for determining the presence or absence of traffic congestion is executed. Also good.

  (F) In step 17, the CPU 41 displayed on the required time display device 61 instead of the schematic map schematically showing the high standard road including the place names of the predetermined points displayed on the required time display device 61. Only the high-standard road including the place name of each predetermined point may be extracted from the navigation map information 26 and displayed on the liquid crystal display 15. Thereby, it is not necessary to provide the high-standard road schematic map information 27, and the storage capacity of the map information DB 25 can be reduced.

  (G) In step 13, the CPU 41 may recognize each destination name displayed on the required time display device 61 approached via the front imaging camera 52 by image recognition and store it in the RAM 42. . Thereby, it is not necessary to store each destination name displayed on each required time display device 61 in the display information 28.

It is a schematic block diagram of the vehicle by which the navigation apparatus concerning a present Example is mounted. It is a block diagram which shows typically the control system centering on the navigation apparatus mounted in a vehicle. It is explanatory drawing explaining communication with a navigation apparatus and a road traffic information center. It is a flowchart which shows the required time information display process which displays the present required time to each predetermined point currently displayed on the required time display apparatus which CPU of a navigation apparatus performs with the schematic diagram of a high standard road. It is explanatory drawing for demonstrating the state which the own vehicle came before the required time display apparatus provided on a road. It is a figure which shows an example of the required time information displayed on the required time display apparatus. It is a figure which shows an example which displayed required time information etc. on the liquid crystal display with the model map which shows a highway typically corresponding to FIG. It is a figure which shows another example which displayed required time information etc. on the liquid crystal display corresponding to FIG. It is a figure which shows another example which displayed required time information etc. on the liquid crystal display with the model map which shows a highway typically corresponding to FIG.

Explanation of symbols

1 Navigation device 2 Vehicle (own vehicle)
3 Road Traffic Information Center (VICS: registered trademark)
4 Network 11 Current Location Detection Processing Unit 12 Data Recording Unit 13 Navigation Control Unit 15 Liquid Crystal Display 24 Traffic Information DB
25 Map information DB
26 Navigation map information 27 High-standard road schematic map information 28 Display information 41 CPU
42 RAM
43 ROM
51 Camera ECU
52 Front imaging camera 61 Time display device 61A-61C Destination name 62-64 Time display section 71 Model map 72 Vehicle position mark 73, 74 Arrows 77-79 Display section

Claims (6)

Current position detection means for detecting the current position of the host vehicle;
The location information of the required time display device which is provided on the road and displays the place name of the predetermined point regarding the traveling direction and the current required time to the predetermined point, and the place name displayed on the required time display device. Map information storage means for storing map information including display information including place name information;
Display device approach detection means for detecting an approach to the required time display device based on the map information and current position information detected by the current position detection means;
Place name information acquisition means for acquiring place name information representing the place name displayed on the required time display device to which the host vehicle approaches based on the detection result of the display device approach detection means;
Distance calculating means for calculating a distance from the own vehicle to the predetermined point corresponding to the place name information based on the map information and the current position information detected by the current position detecting means;
Required time acquisition means for acquiring the required time to the place name of the predetermined point displayed on the required time display device that the host vehicle approaches;
A traffic jam judging means for judging the presence or absence of traffic jam to the predetermined point displayed on the required time display device approached by the own vehicle;
When it is determined that there is a traffic jam by the traffic jam judging unit, the required time to the place name of the predetermined point acquired by the required time acquiring unit and the distance to the predetermined point calculated by the distance calculating unit are notified. Notification means for
A navigation device characterized by comprising: The required time acquisition means includes
Imaging means for imaging the front of the host vehicle;
Recognizing means for recognizing a required time corresponding to the place name of the predetermined point displayed on the required time display device in an image captured by the imaging means based on a detection result of the display device approach detecting means;
Have
The navigation apparatus according to claim 1, wherein the traffic jam determination unit determines whether or not there is the traffic jam based on a recognition result by the recognition unit. A receiving means for receiving road traffic information including traffic jam information is provided.
The navigation device according to claim 1, wherein the traffic jam determination unit determines whether or not there is the traffic jam based on the road traffic information received via the reception unit.   The said notification means has a display control means which controls so that the map information containing the place name of the said predetermined point corresponding to this required time with the said required time and the said distance may be displayed on a display apparatus. The navigation device according to any one of claims 1 to 3. Each of the required time display devices includes schematic map information storage means for storing schematic map information schematically showing a high standard road including a place name of a predetermined point displayed on the required time display device,
5. The navigation device according to claim 4, wherein the display control unit controls the display device to display schematic map information including a place name of a predetermined point corresponding to the required time. Current position detection means for detecting the current position of the host vehicle;
The location information of the required time display device which is provided on the road and displays the place name of the predetermined point regarding the traveling direction and the current required time to the predetermined point, and the place name displayed on the required time display device. Map information storage means for storing map information including display information including place name information;
Display device approach detection means for detecting approach to the required time display device based on the map information and current position information detected by the current position detection means;
A place name information acquisition means for acquiring place name information indicating a place name of a predetermined point displayed on the required time display device on which the host vehicle approaches based on a detection result of the display device approach detection means;
Required time acquisition means for acquiring the required time to the place name of the predetermined point displayed on the required time display device that the host vehicle approaches;
A traffic jam judging means for judging the presence or absence of traffic jam to the predetermined point displayed on the required time display device approached by the own vehicle;
When it is determined that there is traffic jam by the traffic jam judging means, the required time to the place name of the predetermined point acquired by the required time acquiring means and the map information including the place name information acquired by the place name information acquiring means Display control means for controlling to display on the display device;
A navigation device characterized by comprising:

Images