JP2004286454A - Detour guiding method during non-guidance, and navigation device executing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detour guiding method during non-guidance and a navigation device executing the method, capable of searching the detour even during the non-guidance and indicating the same to a user. <P>SOLUTION: This navigation device searches the detour for bypassing the traffic hindrance, and indicates the detour on a display to inform a user of it, in a case when the traffic hindrance such as traffic jam and controls is found on a road where a vehicle travels base on the road traffic information such as VICS from the external in a state that a guidance function is off. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a navigation device having a guidance function of searching for a route to a destination and guiding the user to the destination according to the searched route, and more particularly to guidance of a detour during non-guidance.
[0002]
[Prior art]
The navigation device detects the current position of the vehicle, reads out map data around the vehicle position from a map storage medium such as a DVD or HDD, draws a map on a display screen, and draws a vehicle mark on the map in a superimposed manner. I do. When the current position changes due to the movement of the vehicle, the map is scrolled or the vehicle mark on the map is moved in accordance with the change to present the map information around the vehicle position to the user in an easy-to-understand manner.
[0003]
The navigation device has a function of searching for a route to a destination set by a user and guiding the route. The route guidance function uses the map data to search for a low-cost route from the current vehicle position to the destination using the Dijkstra method, etc., stores the searched route in the memory as guidance route data, and runs During the display the route on the display.
[0004]
On the other hand, when the user does not give an instruction to search for a route to the destination, in other words, when the vehicle is not being guided, a map around the own vehicle position is displayed on the display. For example, using a two-screen display as shown in FIG. 14, a map around the position of the vehicle is displayed on the left screen, and a general road schematic diagram is displayed on the right screen, along with the name of the currently traveling road and the names of the front and rear intersections. , The distance to the next intersection, the address of the current location, and the like.
[0005]
Some navigation devices have a function of searching for a detour when a traffic jam occurs. Patent Literature 1 discloses a technique in which when a detour is searched, the searched detour is displayed, and an operator selects a desired detour from the displayed detour. Patent Literature 2 discloses a technique in which a section where traveling is avoided is set, a plurality of detours that detour the section are searched for, displayed on a screen, and a user selects one of the detours. Patent Literature 3 discloses a technique of displaying an identification mark indicating whether or not another road existing up to an intersection can be detoured when approaching an intersection on a guidance route.
[0006]
[Patent Document 1]
JP-A-2001-227965
[Patent Document 2]
JP-A-2002-243480
[Patent Document 3]
JP-A-2001-141480
[0007]
[Problems to be solved by the invention]
However, the conventional navigation device has the following problems. In general, a small number of users set a destination and guide a route each time they drive, and in most cases, it is considered that they are not guiding. Even if a large traffic jam, traffic blockage, accident, etc. is discovered in the foreseeable moment during non-guidance and the necessity of a detour occurs, it is not possible to search for a detour immediately while non-guided, which is convenient. She lacked gender. In addition, the road on which the vehicle is currently traveling or a road branching off the road may be a dead end or a dead alley.However, since the vehicle is not being guided, it is not possible to appropriately inform the user of the dead end or the dead end. Did not.
[0008]
Therefore, the present invention solves the above-mentioned conventional problems, and provides a method for guiding a detour during non-guide and a navigation device for performing the same, which can search for a detour and inform the user of the detour even during non-guide. I will provide a.
[0009]
[Means for Solving the Problems]
The navigation device according to the present invention includes a guidance function for searching for a route to a destination, guiding the vehicle to the destination according to the searched route, and detecting a position of the vehicle and outputting position detection information. Detecting means, road traffic information receiving means for receiving road traffic information sent from the outside, display means for displaying a vehicle and a map around the vehicle based on the position detection information, and in a state where the guidance function is turned off. When a traffic obstruction has occurred on the road on which the vehicle is traveling based on the road traffic information, a detour that bypasses the traffic injury is searched for, and the detour is displayed on the display means. Road control means. Thereby, even during non-guidance, when there is a traffic obstruction such as congestion or regulation in front of the road on which the vehicle is traveling, it is possible to appropriately inform the user of a detour that automatically bypasses the traffic, It is possible to support the driving of the user.
[0010]
The navigation device according to the present invention includes a guidance function for searching for a route to a destination, guiding the vehicle to the destination according to the searched route, and detecting a position of the vehicle and outputting position detection information. Detecting means, input means for receiving an input from a user, display means for displaying a vehicle and a map around the vehicle based on the position detection information, and in a state where the guidance function is turned off, an instruction from the input means. A detour control means for searching for a detour on the road on which the vehicle is traveling based on the detour, and displaying the detour on the display means. Thus, even during non-guidance, by searching for a detour in accordance with an input instruction from the user and performing this guidance, information on the detour can be appropriately supplied to the user.
[0011]
The navigation apparatus according to the present invention has a guidance function of searching for a route to a destination and guiding the user to the destination according to the searched route. Having. When there is a traffic obstacle on the road on which the vehicle is currently traveling based on external road traffic information, the method includes a step of searching for a detour to bypass the traffic obstacle and guiding the detour.
[0012]
The navigation apparatus according to the present invention has a guidance function of searching for a route to a destination and guiding the user to the destination according to the searched route. Having. According to an instruction from the user, the method includes a step of searching for a detour on a road on which the vehicle is currently traveling, and guiding the detour.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a navigation device according to an embodiment of the present invention. The navigation apparatus 1 includes a GPS receiver 10, a self-contained navigation sensor 11, a VICS / FM multiplex receiver 12, an operation panel 20, a voice input unit 21, a remote control operation unit 22, an input interface 23, and a storage unit 30 for storing map data and the like. , An audio output unit 40, a speaker 41, a display control unit 50, a display 51, a program memory 60, a data memory 70, and a control unit 80 for controlling each unit.
[0014]
The GPS receiver 10 receives a radio wave from an artificial satellite (GPS satellite) and measures the current position and current direction of the vehicle. The self-contained navigation sensor 11 includes a vehicle speed sensor for detecting a moving distance of the vehicle and an angle for detecting a rotation angle of the vehicle. Output signals of the GPS receiver 10 and the self-contained navigation sensor 11 are supplied to a control unit 80, and the control unit 80 calculates a current position and a heading of the vehicle based on these output signals. The VICS / FM multiplex receiver 12 sequentially receives the current road traffic information outside the vehicle from the antenna 13. Such information includes traffic congestion information, traffic accident information, and the like, and can be obtained using, for example, an optical beacon, a radio beacon, a telephone line, and an FM signal.
[0015]
The operation panel 20, the voice input unit 21, and the remote control operation unit 22 constitute an input of the navigation device 1. The user gives various instructions and settings to the navigation device 1 via these inputs, such as searching for the destination, searching for a route to the destination, and changing the settings of the display screen. The operation panel 20 can use, for example, a plurality of operation keys 52 provided below the display 51. The voice input unit 21 transmits a user's voice input from a voice input microphone (not shown) to the input interface 23, and converts a voice analog signal into a digital signal. The remote control operation unit 22 includes a plurality of input keys. When the user operates the input keys, the input operation is transmitted to the input interface 23 through wireless communication. The input interface 23 is connected to the operation panel 20, the voice input unit 21, and the remote control operation unit 22, and transmits input information input by a user to the control unit 80.
[0016]
The storage unit 30 is a recording medium such as a CD, a DVD, or a hard disk, and stores map data, drawing data, road data, addresses, telephones, facilities, and other databases required for the navigation device. Preferably, by using a hard disk, large-capacity storage can be realized, and high-speed access and data rewriting can be performed. The navigation device 1 further includes a communication control unit 31, which communicates with an external server or the like via a network, downloads the latest map data or facility data therefrom, and updates the contents of the storage unit 30. be able to. Further, by wirelessly connecting a mobile phone or the like to the communication control unit 31, it is possible to provide entertainment information and road information such as facilities and restaurants held by the navigation device 1 to the mobile phone.
[0017]
The audio output unit 40 is connected to the speaker 41, and outputs sound from the speaker 41 under the control of the control unit 80. For example, a sound that prompts the driver to pay attention to the course direction before the intersection is output as information until the user reaches the destination, or an operation input to the user is performed when the user performs an interactive input to the navigation device. Output a voice instruction.
[0018]
The display control unit 50 is connected to the display 51 and displays a map on the display 51 under the control of the control unit 80, or a vehicle mark indicating the current position of the vehicle on the map, a route to a destination, a junction such as an intersection, or the like. , And the trajectory of the vehicle is synthesized. Further, information on an instruction or operation input by the user from the operation panel 20 or the like is displayed on a map or on another screen. The display control unit 50 preferably includes a VRAM such as a FIFO, stores data relating to maps, roads, and guidance displays read from the storage unit 30 in the VRAM, and combines various data with the map data read from the VRAM. Can be done. The display 51 is, for example, a horizontally long wide screen using liquid crystal or plasma, and can display two screens under the control of the display control unit 50.
[0019]
The program memory 60 stores various programs executed in the navigation device. For example, it includes a program 61 for searching for a route to a destination and a program 62 for setting and changing a map displayed on the display 51. Further, the present invention includes a detour control program 63 for searching and displaying a detour during non-guidance. The program memory 60 can be configured using a memory such as a ROM or a RAM, or can be stored in the storage unit 30.
[0020]
The data memory 70 stores processing results processed by the control unit 80, map data 71 read from the storage unit 30, and the like. The map data 71 includes link data and node data necessary for searching for a route, and a road network displayed on the display 51. Further, the data memory 70 stores the route data 72 as a search result when the route search processing to the destination is performed by the control unit 80, and stores the road traffic information received from the VICS / FM multiplex receiver 12. 73 is stored. Further, in the present embodiment, the detour data 74 searched by the detour control program 63 is stored, and these detour data 74 are read when guiding and displaying a detour that is not being guided. As the data memory 70, preferably, a DRAM, an SRAM, a flash memory, or the like can be used. Further, the data memory 70 may include an external memory 75 that can be mounted on the navigation device 1.
[0021]
Next, the detour guidance operation during non-guidance will be described.
1. When there is traffic congestion / regulation information from VICS (vehicle Information Communication System) while driving on a general road
FIG. 2 shows an operation flow at this time. When the navigation function of the navigation device is not being executed, that is, when there is a traffic obstruction such as traffic congestion or regulation ahead of the running road even during non-guidance, this is detected by the VICS / FM multiplex receiver 12 (step S101). ), Guidance of traffic congestion / regulation information is provided by voice guidance or VICS level 3 map display (step S102). In the case of serious congestion / regulation information, for example, when the congestion continues for 5 km or more or when there is a traffic stop (step S103), the following detour processing is performed. When the position of the vehicle is 2 km before the traffic congestion / regulation (step S104), the detour calculation for the section 500 m before the position where there is the traffic congestion / regulation obstacle is started (step S105). When 1 km before the traffic jam / regulation, guidance / display of the detour obtained by the detour calculation is performed (step S106). The guidance displays the detour on the display 51 together with the voice guidance that “a detour has been found” by voice. If no detour is found in the detour calculation, the user is notified by voice that there is no detour. When the vehicle starts traveling along the detour (step S107), guidance for the detour is provided while leaving the guidance display of the detour, and the display of the other detours is deleted (step S108). The guidance of the detour when the vehicle has passed all the detour start points without traveling along the detour (step S109) and when the vehicle has returned to the original road (step S110). The operation ends.
[0022]
Next, the detour calculation in step S105 will be described. In accordance with the detour control program 63, the control unit 80 performs a detour calculation for all connection paths existing in a section 500 m before traffic congestion and regulation. The destination of the detour, that is, the return point to the original road (return point) is set to the end point of the detourable section. The detour-returnable section refers to a section from a point of congestion or regulation to a point where the congestion or regulation is eliminated, as described later. In this example, a point 10 km away from a point where congestion or regulation is eliminated. (Link) is defined as a detourable section. Routes to be searched include arterial roads such as national roads and prefectural roads, as well as narrow streets (roads with a width of 3.3 m or more and 5.5 m or less) that are not targeted when searching for routes to ordinary destinations. Explore. At the time of calculating the detour, if the vehicle passes twice on the road once passed, it is determined to be a dead end or a dead end, and is not treated as a detour. In addition, no-entry roads such as one-way streets are not treated as detours.
[0023]
In the detour calculation, as shown in FIG. 3, the link cost of the road in front of the vehicle position 220 where the traffic congestion / restriction 200 exists is extremely increased, while the link cost of the detour-recoverable section 210 is lowered. In this way, a detour that does not pass through traffic jams and regulations is searched. As a result, a plurality of detours 230, 240, and 250 in the detour-recoverable section 210 are searched for from a connection path (one location in FIG. 3) between the vehicle position 220 and the traffic jam / restriction 200.
[0024]
When a plurality of detours are found by the detour calculation, priority is given to them. First, priorities are assigned in descending order of link cost of detours that do not include narrow streets. For a detour including a narrow street, the link cost is not compared, and the priority of the smaller number of links of the narrow street included in the detour is increased. When the number of links is the same, the lengths of the narrow street sections are compared, and the shorter one of the narrow street sections is given higher priority. In addition, a detour including a narrow street is displayed to that effect.
[0025]
FIG. 4 shows a display example of a detour. The display 51 displays two screens: a map screen 310 displaying the vicinity of the position of the vehicle and a detour display screen 320 for bypassing traffic jams and restrictions. On the detour display screen 320, the approximate road 330 on which the vehicle is currently traveling, the traffic congestion / regulation display 340 indicating information on traffic congestion and regulation occurring ahead, the vehicle mark 350 and the traffic congestion / regulation are displayed. And detour indications 360 for all the connections between them.
[0026]
The detour display 360 includes several display patterns. As described above, of the plurality of detours, the one with the lowest link cost is set as the first priority detour, and the one with the next lowest link cost is set as the second priority detour, and these are color-coded and identified and displayed. In this example, the first detour 362 and the second detour 364 are displayed with different hatchings for easy understanding. Furthermore, when the detour does not pass through a narrow street, “○” is displayed. When the detour passes through a narrow street, “□” is displayed. Roads that can be detours are long, and roads that cannot be detours are displayed short. "X" or "no entry" is displayed on this connection path.
[0027]
FIG. 5 is an enlarged view of a main part of the map screen 310. Based on the VICS level 3 information, a traffic congestion / regulation display 340 is superimposed and displayed on a map at a point where traffic congestion or regulation is occurring. First and second priority detours 362 and 364 are displayed between the vehicle position mark 350 and the traffic jam / regulation display 340. In the figure, 370 is a dead end, 380 is a dead end, and their connection paths are indicated by “x” on the detour screen 320 (see FIG. 4).
[0028]
Returning to the flow of FIG. 2 again, when the vehicle starts traveling along any one of the detours, guidance of the detour is performed, and the display of the other detour is deleted. In the detour guidance, guidance on intersection information and course directions is performed in the same way as when setting a normal destination and guiding a route. During the detour guidance, the vehicle position mark is updated and displayed as needed, and when it is determined that the vehicle has arrived at the destination or the destination, the vehicle is instructed to return to the original road.
[0029]
If traffic has already been congested during non-guidance, the detour calculation is forcibly performed by voice input from the user or remote control operation (step S112).
[0030]
2. When there is no traffic congestion / regulation information from VICS while driving on a general road
Although there is no VICS information, traffic congestion / regulation is occurring shortly, and when bypassing this, guidance on a detour is performed according to the operation flow shown in FIG. When receiving the voice command from the user, the control unit 80 activates the detour control program 64 (Step S201). Next, the calculation of the detour is started (step S202). The section to be detoured is set as follows. Regardless of the vehicle speed, the next intersection node of the road on which the vehicle is currently traveling is set as a start point. If the distance to the next intersection is within 10 m, the further intersection node is set as a start point (steps S203, S204, S205). The detour return point is determined according to a user's voice command as described later (step S206). Then, a detour is searched for (step S207), and the detour is guided and displayed (step S208). The guidance and display of the detour are the same as those in FIGS. 2 to 5 described above.
[0031]
According to the voice command from the user, the detour section is determined as follows.
a) Short-term detour
When the user inputs a voice command of “foreseeable detour”, as shown in FIG. 7, only the link 400 next to the own vehicle position 420 is detoured. The link cost of the link 400 to be detoured is extremely high, and the link cost of the detour returnable section 410 starting from the next intersection node of the link 400 is lowered. The detour returnable section 410 is, for example, a link end 10 km ahead along a road. Thereby, a plurality of detours 430, 440, and 450 are searched in the detour returnable section 410.
[0032]
b) 1km detour
When the voice command “1 km detour” is input from the user, as shown in FIG. 8, the link 500 from the next intersection node of the own vehicle position 520 to the destination 1 km is detoured. The link cost of the link 500 to be detoured is set extremely high, and the link cost of the detour-recoverable section 510 that terminates at a link 10 km ahead of the next intersection node is reduced, whereby the detours 530 and 540 are made. Search for 550.
c) In addition to the above, the distance information is input from the user such as 2 km detour, 3 km detour, 4 km detour, and 10 km detour, and a corresponding detour section is set.
[0033]
In addition, when there is no VICS information, when detouring to an area such as a city, ward, municipal or larger area, the detour is guided according to the operation flow of FIG. Here, an example will be described in which, in the administrative boundaries of the municipalities in the Oji level, the Oji level that can be managed as the smallest polygon data is bypassed. In each area, dates and times when festivals and events are held are often known in advance, and traffic jams and restrictions are expected in such places. For this reason, it is possible to perform a smooth travel by bypassing a place where traffic congestion and regulation are anticipated (here, the Oji level).
[0034]
First, when the user inputs, for example, “Osaka Awakai” as a voice command (step S301), the control unit 80 activates the detour control program 63 and starts calculation of the detour (step S302). As shown in FIG. 10, when it is assumed that the position of the vehicle 610 on the road 600 on which the vehicle is currently traveling is a large letter A, it bypasses a neighboring large letter B from a branch point 620 of the large letter A, and the next large letter C At the road 600. The cost of the link 630 in O-shaped B is made extremely high as a detour section, and the cost of the link 640 in O-shaped C is made extremely low as a detour-recoverable section. As a result, the return point of the detour 650 is set to the large letter C. However, when the detour-recoverable section is less than 5 km, the calculation is performed by further including the next O-section in the detour-recoverable section.
[0035]
Guidance and display of the detour searched by the detour calculation are performed (steps S303, S303). When there are a plurality of detours, the first and second priority detours are identified as in FIG. When a narrow street is included in the detour, the fact is displayed (indicated by a square), and also when traffic is closed or entry is prohibited. Also, guidance on the detour is performed in the same manner as in FIG.
[0036]
3. When there is traffic congestion / regulation information from VICS while driving on a highway
In some cases, a section of the expressway is closed due to an accident or the like. When the vehicle is being guided, the detour is calculated automatically. In the present invention, the detour is calculated even during non-guide. In the detour calculation, by setting the return point (point) of the detour to an IC (interchange) where regulation has been eliminated, the detour calculation up to that point can be performed.
[0037]
a) When traffic jam information from VICS is found at the end of the next IC exit:
As shown in FIG. 11, if a large traffic jam S having a length of, for example, 20 km occurs ahead of the next IC 720 on the highway on which the vehicle 700 is traveling, the user needs to make a determination. Does not automatically activate the detour guidance function. That is, since the vehicle is not being guided, it is not known whether or not the own vehicle gets off the IC 710. In this case, the guide of the detour is provided when a request is made by a voice command from the user.
b) When the regulation information from VICS is found at the end of the next IC exit:
After the own vehicle 700 passes through the IC 710, when it is detected that the traffic stop S has occurred ahead of the next IC 720, and when the VICS is notified of the traffic stop S up to the IC 730, the vehicle is automatically detoured. Activate the guidance operation. However, when there is a junction (JCT) before the next IC 720 from the own vehicle position 700 or when there is a JCT before the IC 720, the detour guide is not automatically activated because user judgment is required. Also in this case, when a request is made by a voice command from the user, guidance on a detour is performed.
[0038]
The detour section extends from the next IC exit to the next IC entrance. In the example shown in FIG. 11, a section from IC 720 to IC 730 is a detour section. However, when the information of the closing of traffic such as the on-ramp restriction is generated at the entrance of the IC 730, the detour section extends to the next IC 740.
[0039]
In the calculation of the detour, five routes are calculated, and the result is shown on the screen. FIG. 12 shows an example of the calculation result. The five routes include a recommended route 800, a general route 810, a short-distance route 820, a main route 830, and another route 840, and the distance, required time, and fee of each route are displayed. As the recommended route 800, a detour that is considered to be the most rational in terms of the distance, the required time, and the fee is selected, and the recommended route is displayed as a detour 750 (see FIG. 11) on the map screen. When the user selects a route other than the recommended route, that route is displayed on the map screen as a detour. In addition, the general route is a route in which most of the detours include general roads, the short-distance route is the route with the shortest distance, the main route is a national road that does not include narrow streets, etc. The route is the next recommended route when the recommended route is denied.
[0040]
When a detour is displayed, a voice message indicating that a detour has been found is provided at the same time. When the vehicle starts traveling along the detour, guidance is automatically provided along the detour, and guidance is automatically provided at the point where the vehicle reaches the entrance of the highway (return point). Will be terminated.
[0041]
4. When there is no traffic congestion / regulation information from VICS while driving on a highway
In this case, when, for example, “Ukai” is input as the voice command of the user, the control unit 80 starts the bypass control program 63. Also, as described above, a voice command is similarly input when there is VICS information and when guidance of a detour is requested by user determination.
[0042]
When the guidance of the detour is activated, a detour section from the next IC to the next IC is set as a detour section, and a detour that detours the section is displayed. In the calculation of the detour, five routes are searched and displayed as in the case of FIG. When there is no obstacle in front of the highway, it is not effective to leave the highway once and return to the highway again, but the judgment is left to the user.
[0043]
In addition, as described above, when there is a JCT before the next IC from the position of the own vehicle or when there is a JCT ahead of the next IC, it is displayed on a screen or notified by voice as to which JCT to proceed to. And let the user select by voice. For example, as shown in FIG. 13, when a traffic stop S occurs between the IC 910 and the IC 920 next to the own vehicle position 900 and there is a JCT between the IC 910 and the traffic stop S, the user can use the highways 911 and 912 on the highways 911 and 912. Let them choose which one to proceed. When the highway 911 is selected, the ICs 910 and 920 are set as a detour section, and search and guidance of a detour are performed.
[0044]
As described above, the preferred embodiments of the present invention have been described in detail. However, the present invention is not limited to the specific embodiments, and various modifications may be made within the scope of the present invention described in the appended claims. Deformation and modification are possible.
[0045]
【The invention's effect】
According to the present invention, when a traffic obstacle such as traffic congestion or regulation is found in front of a running road during non-guidance, a detour to bypass the obstacle is automatically searched for and guided. The user can receive guidance on a detour without performing complicated operations during driving. Further, even when the vehicle is not being guided, the detour is searched immediately in response to a request from the user, which is very convenient.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a navigation device according to an embodiment of the present invention.
FIG. 2 is a diagram showing a flow of a detour guide operation according to the present embodiment.
FIG. 3 is a diagram illustrating a method of calculating a detour.
FIG. 4 is a diagram illustrating a display example of a detour.
FIG. 5 is a partially enlarged view of the map screen shown in FIG. 4;
FIG. 6 is a diagram showing a flow of a detour guide operation when there is no VICS information.
7 is a diagram illustrating a method of calculating a detour in the operation flow of FIG. 6;
FIG. 8 is a diagram illustrating a method of calculating a detour in the operation flow of FIG. 6;
FIG. 9 is a diagram showing an operation flow for bypassing a large letter when there is no VICS information.
FIG. 10 is a diagram illustrating a method of calculating a detour in the operation flow of FIG. 9;
FIG. 11 is a diagram illustrating guidance of a detour on a highway.
FIG. 12 is a diagram showing an example of calculation of a detour on a highway and display thereof.
FIG. 13 is a diagram illustrating guidance on a detour by a user's selection on a highway.
FIG. 14 is a diagram showing a conventional screen display example during non-guidance.
[Explanation of symbols]
1: navigation device, 10: GPS receiver, 11: self-contained navigation sensor,
12: VICS / FM multiplex receiver, 20: operation panel, 21: voice input unit,
22: remote controller, 23: input IF, 30: storage unit, 31: communication control unit,
40: audio output unit, 41: speaker, 50: display control unit, 51: display,
60: program memory, 70: data memory, 80: control unit,
320: detour display screen, 330: rough road, 340: traffic jam / regulation display,
360: Detour display

Claims (13)

A navigation device having a guidance function of searching for a route to a destination and guiding to the destination according to the searched route,
Position detecting means for detecting the position of the vehicle and outputting position detection information;
Road traffic information receiving means for receiving road traffic information sent from outside;
Display means for displaying a vehicle and a map around the vehicle based on the position detection information;
In the state where the guidance function is turned off, when a traffic obstacle occurs on the road on which the vehicle is traveling based on the road traffic information, a search is made for a detour that bypasses the traffic injury, and the detour is searched for. And a detour control unit that causes the display unit to display the following. The navigation device according to claim 1, wherein the navigation device includes a voice output unit, and the detour control unit performs voice guidance by using the voice output unit that the detour is found. The detour control means displays a plurality of detours included from the road on which the vehicle is traveling to the point where the traffic obstruction occurs, and gives priority indication to the plurality of detours. The navigation device according to claim 1. The navigation device according to any one of claims 1 to 3, wherein, when the detour includes a narrow street, the detour control means displays the fact. The said detour control means displays the fact to the connection road which cannot become a detour, among the connection roads connected to the road in front of which a traffic obstruction has occurred. Navigation device. A navigation device having a guidance function of searching for a route to a destination and guiding to the destination according to the searched route,
Position detecting means for detecting the position of the vehicle and outputting position detection information;
An input means for receiving input from a user;
Display means for displaying a vehicle and a map around the vehicle based on the position detection information;
In a state where the guidance function is turned off, a search is made for a detour that bypasses a predetermined detour section on the road on which the vehicle is traveling based on an instruction from the input means, and the detour is displayed on the display means. Navigation device having a detour control means The navigation device according to claim 6, wherein the detour control unit determines the detour section based on an instruction from the input unit, and searches for a detour that bypasses the detour section. The navigation device according to claim 7, wherein distance information is input as the detour section from the input unit. The navigation device according to claim 7, wherein municipal information is input as the detour section from the input unit. A method of guiding a detour during non-guidance of a navigation device having a guidance function of searching for a route to a destination and guiding to the destination according to the searched route,
Based on road traffic information from the outside, when there is a traffic obstacle on the road on which the vehicle is currently traveling, search for a detour to bypass the traffic obstacle and guide the detour, detour during non-guidance Way guidance. The detour guidance method according to claim 10, wherein the detour includes a plurality of detours, and respective priorities are guided together. A method of guiding a detour during non-guidance of a navigation device having a guidance function of searching for a route to a destination and guiding to the destination according to the searched route,
A method of guiding a detour during non-guidance, in which a detour that bypasses a predetermined detour section on a road on which the vehicle is currently running is searched for and guided by the user based on an input instruction from the user. The detour guide method according to claim 12, wherein the user's input instruction includes distance information or municipal information as a detour section.

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