JPH09210711A - Running route guiding device for car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a running route guiding device for a car which enables the route from a starting point to a destination point which is already used for driving guidance to be changed to a desired route in an easy operation. SOLUTION: When the command to change a course is inputted while the display control of a road map in accordance with a route set already is in operation, the first crossing toward which the car is heading is automatically set as a starting-point crossing for changing a route (at S310 and S320), and a guidance image for setting a destination is displayed on a display screen as well. A user points a destination on this guidance image (at S330-S410), then the route from the starting-point crossing to the pointed destination (ending point) is automatically computed (at S420) and the computed route is updated (at S430) for the route regulating the display. As a result, a driving route is very easily changed while route guidance is in operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention displays a road map on a display device and displays a preset traveling route and vehicle position of the vehicle on the road map, thereby providing a vehicle driver with a vehicle. The present invention relates to a travel route guidance device for a vehicle, and particularly to a travel route guidance device for a vehicle suitable for changing a travel route once set during the travel guidance.

[0002]

2. Description of the Related Art Conventionally, in this type of device, an operation mode of the device is set to a travel route setting mode, a departure place and a destination are designated, and a route between them is calculated and stored as a travel route. When the vehicle travels along this travel route, the operation mode of the device is switched to the travel route guidance mode. That is, when the operation mode of the device is switched to the travel route guidance mode, the current position and the travel route of the vehicle are displayed on the road map displayed on the display device.

However, in the conventional guide device capable of displaying the traveling route under such an operation, when the user wants to change the destination while the vehicle is traveling along the traveling route. However, there is a problem in that the operation mode of the device must be changed from the travel route guidance mode to the travel route setting mode, and the departure place and the destination must be re-input, and the operation is extremely troublesome.

On the other hand, in order to solve such a problem, in recent years, as disclosed in, for example, Japanese Unexamined Patent Publication No. 5-127595, a new destination is input even when the device is in the traveling route guiding mode. If so, a device has been proposed in which a route from the current destination to the newly input destination is automatically calculated and the calculation result can be added to the already set traveling route.

According to the proposed device, even when the device is operating in the travel route guidance mode, if only the destination is input, the travel route that has already been set will reach the destination. Since you can set additional routes, you can easily change the destination.

[0006]

However, although the proposed device functions extremely effectively when it is desired to drive a vehicle from a destination already set to a destination further away, it is already set. If you want to go to a completely different destination without passing through the destination, you must switch the operation mode of the device from the travel route guidance mode to the travel route setting mode and reset the route.

That is, in the proposed device, when the device is in the traveling route guiding mode, the destination itself can be changed, but the destination itself cannot be changed. In order to switch the traveling route from a route that has already been set to a completely different route, it is necessary to redo the operation for setting the traveling route from the beginning, and it is not possible to change the traveling route while the vehicle is traveling. .

The present invention has been made in view of these problems, and a vehicle in which the traveling route from the starting point to the destination, which has already been used for traveling guidance, can be changed to a desired route by a simple operation. An object is to provide a travel route guide device.

[0009]

According to a first aspect of the present invention, there is provided a vehicle travel route guide device, wherein when the device is in a travel route setting mode, the travel route calculation means: The optimum travel route for driving the vehicle from the starting point to the destination specified from the outside is calculated. Further, when the device is in the travel route guidance mode, the travel route display control means displays a road map of a predetermined area including the current position detected by the vehicle position detection means on the display means and displays the road map on the displayed road map. The travel route calculated by the travel route calculating means and the current location of the vehicle are displayed in a distinguishable manner, and the display contents are updated according to the change in the current location.

Therefore, the user sets the operation mode of the device to the traveling route setting mode and inputs the starting point and the destination, and automatically sets the optimum route from the starting point to the destination. After calculating this route, if the operation mode of the device is switched to the travel route guidance mode, the display means displays the road map including the current location, the travel route and the current location, and the vehicle travels from the display screen. You can check the roads you should make.

Further, in the traveling route guide device of the present invention, when the traveling route change command is input while the device is in the traveling route guidance mode, the start point setting means changes the intersection from the present position to the traveling direction of the vehicle. The guide image display control means displays the guide image for inputting the destination on the display means while setting the start point for changing the travel route. Then, when the destination is designated from the outside according to the guide image displayed by the guide image display control means on the display means, the end point setting means sets the destination as the end point for changing the traveling route.

Next, when the start point and the end point are respectively set by the start point setting means and the end point setting means, the second traveling route calculating means automatically calculates the route from the set start point to the end point, The traveling route updating means sets the calculated route as a new traveling route, and causes the traveling route display control means to execute route display based on the traveling route.

Therefore, according to the travel route guide device of the present invention, the device is in the travel route guidance mode, and the travel route display control means displays the road map, the travel route and the current position on the display means in accordance with the preset travel route. Even when is displayed, input a change command of the traveling route from the outside,
If a guide image is displayed and a destination is input according to the guide image, a travel route starting from an intersection in the forward direction of the vehicle is automatically calculated, and a new travel route is displayed on the display means. Will be.

Therefore, according to the present invention, even if the traveling route is already set, the traveling mode is changed without switching the operation mode of the device to the traveling route setting mode and inputting the starting point and the destination again. You can easily change the route. Further, in particular, in the present invention, the traveling route from the intersection (starting point) ahead of the vehicle traveling direction to the newly designated destination (end point) is automatically calculated, and the route after the calculation is displayed on the display means. The traveling route can be changed to a traveling route which is completely different from the traveling route that has already been set, and the device can be guided to the optimum route to the designated destination.

Next, in the traveling route guiding apparatus according to the second aspect, the starting point setting means determines that the vehicle is to be updated after the traveling route is updated based on the traveling speed of the vehicle and the time required for updating the traveling route which is set in advance. An intersection located ahead of the reachable point in the vehicle traveling direction and closest to the current location is searched, and the intersection is set as the starting point for changing the traveling route.

Therefore, according to the present invention (claim 2),
When a travel route change command is input while the vehicle is traveling and the travel route is updated, the starting point of the travel route displayed after the travel route is updated is the intersection where the vehicle has already passed. It is possible to prevent the current location from deviating from the updated travel route. That is, according to the travel route guide device of the present invention, the starting point of the updated travel route displayed on the display means can be set to a point in front of the vehicle position at the time of the display, and the user can It is not necessary to greatly change the route according to the updated travel route, and the vehicle can be allowed to enter the updated travel route simply by running the vehicle as it is.

Further, in the traveling route guide device according to the third aspect, when the second traveling route calculation means starts the route calculation from the start point to the end point, the traveling route display control means causes the guide image display control means. The display of the guide image by is ended and the display of the road map, the traveling route and the current position on the display means is restarted.

Therefore, according to the present invention (claim 3),
While the second travel route calculation means is performing the route calculation for updating the travel route, the display for the route guidance that has been performed until then can be continued, and the vehicle driver can see the road near the present location. And the direction of travel, etc.

On the other hand, in the traveling route guide device according to the fourth aspect, when a traveling route change command is input from the outside, the guide image display control means sets the vicinity of the present location as an initial guide image for inputting the destination. The road map and a cursor for designating a new destination are displayed, and then the display map is updated according to a map movement command input from the outside.

Therefore, according to the present invention (claim 4),
The user can easily specify the destination of the travel route to be updated while checking the road map displayed on the display means, and the road map initially displayed is the road map near the current position. , It is possible to search for a desired destination that should be specified centering on the present location.

Further, in the traveling route guiding apparatus according to the fifth aspect, when a traveling route changing command is inputted from the outside, the guidance image display control means is currently set as an initial guidance image for inputting a destination. The road map near the specified destination and a cursor for designating a new destination are displayed, and then the displayed map is updated according to a map movement command input from the outside. According to 5), the user can easily specify the destination of the travel route to be updated while checking the road map displayed on the display means, similarly to the device according to the fourth aspect. . Further, since the road map initially displayed is a road map in the vicinity of the already set destination, it is possible to search for a destination to be newly designated with the destination as the center.

Further, in the traveling route guide device according to the sixth aspect, when the guide image display control means displays the road map as the guide image for inputting the destination, the type of the destination currently set is determined. While searching from a pre-stored database, a road map displayed as a guide image is searched for points of the same type as the current destination, and based on the search results, the same type as the current destination on the displayed road map. An identification mark indicating the type of the spot is displayed at the spot.

Therefore, according to the present invention (claim 6),
For example, if the destination of the already set driving route is a desired facility such as a ski park, ski resort, library, etc., you can know the traffic congestion on the road to that facility by radio, etc. When you want to change to another facility, you can easily find the destination on the map and specify the destination more easily.

[0024]

Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 is a block diagram showing the overall configuration of an automobile navigation apparatus of an embodiment to which the present invention is applied.

As shown in FIG. 1, the navigation apparatus of this embodiment has a GPS antenna 2 for receiving radio waves transmitted from an artificial satellite for GPS (Global Positioning System).
a, the received signal is frequency-converted and demodulated to calculate position data including latitude, longitude, altitude, etc. representing the position of the receiving point (in other words, the current position of the vehicle), and the moving speed of the receiving point. A well-known GPS receiving unit 2 as vehicle position detecting means for calculating speed data indicating (in other words, vehicle speed) and direction data indicating moving direction of the receiving point (in other words, traveling direction of the vehicle), road map, etc. A display device 8 as a display means including a liquid crystal display, a CRT, etc. for displaying the road, and a CD-ROM (storage medium) storing map data for displaying a road map on the display device 8 are detachably mounted. A CD-ROM drive 12 that can read map data from the installed CD-ROM,
A keyboard equipped with various keys for the user to input the traveling route information of the vehicle such as the starting point, the destination, the transit point, etc. and the traveling route change command set according to this information by an external operation, and input from the keyboard An input device 14 including a transmission unit that converts the generated command into a transmission signal and transmits the transmission signal;
Based on the position data from the remote control receiver 16 that receives the transmission signal from the input device 14 and restores the reception signal into command data indicating the command content from the user, the current position of the vehicle is included. The CD-ROM drive 12 is used to store map data for displaying a road map.
A road map including the current position is read out from the ROM and displayed on the display device 8 based on the map data, and the traveling route of the vehicle, the vehicle present position, etc. are displayed on the road map to guide the traveling route to the vehicle occupants. And a control device 10 for performing.

The control unit 10 includes a CPU, a ROM,
It is composed of a microcomputer (so-called microcomputer) including a RAM, an input / output device, etc., and executes predetermined arithmetic processing according to a control program stored in advance in the ROM. Of the arithmetic processing executed by the control device 10, the arithmetic processing executed to guide the traveling route to the vehicle occupant, which is the main processing relating to the present invention, will be described below with reference to FIGS. Description will be given along the flowchart shown in FIG.

First, FIG. 2 is a flowchart showing a travel route setting process executed when the user inputs a travel route setting command via the input device 14. When this process is executed, the device is in the course setting mode (the above-mentioned travel route setting mode).

As shown in FIG. 2, when this process is started, a setting screen of preset traveling route information (hereinafter referred to as a course list) is displayed on the display device 8 in S110 (S: step). indicate. It should be noted that this course setting screen is a menu screen for externally designating a starting point as a starting point and a destination as an ending point of the traveling route. That is, in the present embodiment, as a method of designating a departure place or a destination, a method of displaying a road map on a display device and designating a desired point on the displayed map is stored in a CD-ROM together with map data. A method for designating a desired point using the guide information is preset, and the user selects the designating method of the departure place and the destination on this course setting screen, and the selected designating method is selected. It is possible to specify the starting point and the destination respectively by using it. In addition, as a method of designating the starting point and the destination, a mark is set in advance at an arbitrary point on the map, and when designating the starting point, etc., this mark is set by making the device search for this mark. A method of making it possible to specify a desired point is also conceivable.

Next, in S120 and S130, a reception process is performed to accept that the user operates the input device 14 to input the departure point and the destination on the course setting screen.
At 140, it is determined whether the user has input a confirmation command by operating the input device 14, and if the confirmation command has not been input, the reception process of S120 and S130 is executed again. The person inputs the starting point and the destination on the setting screen and waits for confirmation.

When the starting point and the destination are designated in this way, the process proceeds to S150, in which the optimum traveling route for the vehicle to travel from the designated starting place to the destination is automatically calculated, and the calculation result (traveling route) ) Is stored as a travel route for performing the travel route guidance thereafter, the process as the travel route calculating means is executed, and the process is ended. In this embodiment, connection conditions between points such as whether to use a highway or a general road to drive a vehicle from a starting point to a destination in automatically calculating a traveling route. Can also be specified from the outside.

Next, in FIG. 3, when the operation mode of the device is switched from the course setting mode to the navigation mode (the above-mentioned travel route guidance mode) by the operation of the input device 14, the control device 10 repeatedly executes the operation. 7 is a flowchart showing a travel route guidance process performed.

As shown in FIG. 3, when this process is started, first in S210, the current position of the vehicle obtained from the input data from the GPS receiving unit 2 is read, and in S22.
At 0, the map data near the current position is read from the CD-ROM via the CD-ROM drive 12, and the road map near the current position is displayed on the display device 8 based on the read map data.

Then, in the following S230, a course display process for displaying the calculated traveling route (hereinafter also simply referred to as a course) on the road map displayed on the display device 8 in a distinguishable manner is executed, and then in S240. Further, a vehicle mark representing the vehicle is displayed at the vehicle current position on the road map. Further, in the subsequent S250, additional information for traveling guidance (various information such as origin, destination, municipality name, highway guidance, etc.) is displayed on the road map.

Thus, a series of display controls (S210 to S).
250: Corresponding to the travel route display control means of the present invention) is executed, this time, in S260, it is determined whether or not the ending condition of the route guidance is satisfied, and if the ending condition is satisfied, The process ends. The termination condition is satisfied when the vehicle reaches the destination, when the user inputs the termination command, or the like.

On the other hand, when it is determined in S260 that the condition for ending the route guidance is not satisfied, the process proceeds to S270, and it is determined whether or not the user operates the input device 14 to input the course change command. To do. This course change command is, for example,
It is done by pressing the simple setting button twice in succession. And if the course change command is not input,
After shifting to S210, the above display control is executed again, and if a course change command is input, shift to S300,
After the travel route resetting process is executed, the process proceeds to S210 again.

Next, FIG. 4 is a flowchart showing the travel route resetting process executed in S300. FIG.
As shown in FIG. 3, when this process is started, first in S310, the traveling speed (vehicle speed) of the vehicle is read based on the input data from the GPS receiving unit 2, and the read vehicle speed and the traveling route in the subsequent processing are read. Based on the time required for updating (preset), the distance (starting point intersection set distance) from the current position to a reachable point after updating the traveling route is calculated (estimated).

In subsequent S320, the map data is searched to find an intersection which is located in front of the vehicle in the traveling direction and which is the closest to the current vehicle location, among the intersections separated from the current location by the set starting intersection intersection distance or more. Then, a process as a start point setting means for setting this intersection as a start point for updating the traveling route is executed. The intersection located ahead of the vehicle in the traveling direction may be a front intersection on the road on which the vehicle is currently traveling, or a front intersection on the currently set traveling route. Good.

In this way, when the starting point intersection for changing the traveling route is set, the process proceeds to S330 and a new purpose is given to the user on the display screen of the display device 8 which is currently displaying the road map. Display the destination setting screen to specify the destination. In this embodiment, as the destination setting screen,
As shown in FIG. 5 (a), on the road map near the current location displayed at that time, "destination setting" which is the current operation mode and whether the destination is specified on the road map being displayed A destination selection menu for allowing the user to select whether to specify using the guide information is displayed.

Then, in the following S340, the setting method is selected by determining whether the user has selected one of the above setting methods on the destination selection menu displayed as the destination setting screen. After waiting, when the setting method is selected, the process proceeds to the subsequent S350, and it is determined whether the selected setting method is a setting method using a map. Then, when the setting method using the map is selected as the setting method of the destination, the process proceeds to S360, the display of the selection menu is erased, and the destination of the vehicle is displayed on the road map being displayed. The cursor for ground designation is displayed (see FIG. 5B), and the cursor movement reception process is executed to accept the user's input of a cursor movement command by operating the input device 14.

In this acceptance processing, for example, when the user inputs a command to move the cursor, the cursor is fixed at a predetermined position substantially in the center of the display screen, and then the display map is scrolled according to the commanded direction. (See FIG. 5C). In order to make the designated point clear on the map, for example, character data for display, which is composed of a mark indicating the square of a substantially square and a + mark indicating the center position thereof, is used for displaying the cursor. (Fig. 5
(See (b) and (c)).

When the cursor movement acceptance process is executed in this way, the process proceeds to S370, and it is determined whether a cursor position confirmation command has been input. Then, if the cursor position confirmation command is input, the process proceeds to subsequent S420, and conversely, if the cursor position determination command is not input, the process proceeds to S360 again to execute the cursor movement reception process.

On the other hand, when it is determined in S350 that the destination setting method selected by the user is not the setting method using the map (that is, the setting method using the guide information), the process proceeds to S380. After the shift, the search condition acceptance process for receiving the search condition of the guidance information is executed. In this search condition reception process, a menu screen for the user to select and specify search conditions (for example, address, station, tourist attraction, etc.) is displayed, and the search condition is input on the menu screen. It is executed by the procedure such as waiting for.

When the search condition is received in this search condition receiving process, map data is searched in accordance with the received search condition and the road map corresponding to the search condition is displayed on the display device 8 in S390. . For example, when “XX park” is specified as the search condition, “XX park” is searched from the map data, and the road map including “XX park” is displayed on the display device 8.

Then, in S400, a cursor movement reception process is executed in which a cursor for designating a destination is displayed on the displayed road map and the user inputs a cursor movement command by operating the input device 14. Run. It should be noted that this process is executed in substantially the same manner as S360.

In this way, when the cursor movement acceptance processing is executed in S400, the process proceeds to S410, it is judged whether or not the cursor position confirmation command is input, and if the cursor position determination command is not input. , If the cursor position confirmation command is input,
The process moves to S420.

Next, in S420, the point corresponding to the cursor position on the displayed map when the confirmation command is input is
Read as a new destination after updating the travel route, S32
A process as a second travel route calculation means for calculating a travel route optimal for traveling the vehicle from the start intersection set at 0 to this destination (end point) is executed.

When executing the traveling route calculation processing,
The display control of S210 to S250 is repeatedly executed at the same time by well-known multitask processing or timer interrupt processing, and the display device 8 displays the road map including the current position of the vehicle, the travel route that has already been set, and the vehicle. The current position of is displayed.

Then, in S420, when the route from the start intersection to the new destination (end point) is calculated, S43
At 0, a process as a travel route updating means for storing the travel route after the calculation is executed as a travel route for guiding the travel of the vehicle (in other words, a travel route identified and displayed on the display device 8). The resetting process ends.

As a result, the traveling route resetting process (S3
00) is executed, S210 to S25 shown in FIG.
In a series of display control processing of 0, the updated new traveling route is identified and displayed on the road map including the current position displayed on the display device 8. At this time, the identification display of the course which has already been set may be left as it is, or may be updated to an identification display of a color or shape different from the previous one. It may also be erased.

As described above, in the navigation device of this embodiment, the traveling route is set by the traveling route setting process (FIG. 2) when the device is in the course setting mode, and then the operation mode of the device is changed. When the course change command is input while the display control (S210 to 250) based on the previously set travel route and vehicle current position is executed by switching to the navigation mode,
An intersection located in front of the traveling direction of the vehicle is automatically set as a starting intersection for changing the traveling route (S310,
By displaying a guide image for setting the destination on the display device 8 together with (S320), the user is made to specify the destination (S330 to S410: corresponding to the guide image display control means and the end point setting means of the present invention). When the destination is designated, the route from the starting point intersection to the designated destination (end point) is automatically calculated, and the calculated route is updated as the travel route used for display control.

Therefore, according to this embodiment, when the device is in the navigation mode (that is, when the above-mentioned display control is executed), the input device 14 is operated to input the course change command, Further, if a new destination (end point) is designated according to the guide image displayed on the display device 8, the traveling route displayed on the display device 8 is changed to a new traveling route to the destination. The user can change the traveling route with an extremely simple operation.

In particular, in the present embodiment, the traveling route from the intersection (starting point) ahead of the vehicle traveling direction to the newly designated destination (ending point) is automatically calculated, and the route after the calculation is displayed on the display means. Therefore, the traveling route can be changed to a traveling route which is completely different from the already set traveling route, and the device can be guided to the optimum route to the designated destination.

Further, in this embodiment, as the starting point intersection which is the starting point of the updated traveling route, the starting point intersection which is located in front of the traveling direction of the vehicle and which is calculated from the vehicle speed and the time required for updating the traveling route is set. Since the intersections separated by a distance or more are set (S310, S320), the starting point of the traveling route displayed after the traveling route is updated is the intersection where the vehicle has already passed, and the current position at that time is the updated traveling route. It is possible to prevent the deviation. Therefore, the vehicle driver does not need to change the course significantly after displaying the updated travel route, and can simply drive the vehicle as it is to enter the vehicle into the updated travel route.

In this case, if the starting point intersection set in S320 is an intersection ahead of the road on which the vehicle is currently traveling, the vehicle is allowed to travel on that road after the course change command is input. , S320, if the starting intersection is a front intersection on the pre-updated travel route, the vehicle may travel along the travel route.

Furthermore, in the present embodiment, when a new travel route is being calculated (S420), display control based on the travel route that has already been set (S210 to S2).
Since 50) is simultaneously executed and the same travel guidance as before the course change command is input is given, the vehicle driver can confirm the road near the current location or the traveling direction of the vehicle from the display screen of the display device 8.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can take various forms. For example, in the above-described embodiment, after the course change command is input, the road map near the current position, which has been displayed so far, is displayed as it is as a guide image for prompting the user to specify the destination (see FIG. 5). However, as a guide image, a road map near the destination set at that time may be displayed,
Further, on the road map displayed as the guide image, an identification mark representing a point of the same type as the already set destination may be displayed.

That is, for example, the display control process (S330) of the destination setting screen shown in FIG. 4 is performed in S33 shown in FIG.
In this process, the road map near the current destination is first displayed on the display device 8 (S510), and then the destination showing the destination currently set on the road map is displayed. The mark "G" is displayed (S520), and then the aforementioned destination selection menu is displayed (S530). Then, if the user selects "map" as the destination setting method, the display device 8 displays an initial guide image as shown in FIG.
A guide image consisting of a destination mark and a cursor will be displayed, and the user inputs a movement command of the cursor on the displayed map to center the desired destination on the currently set destination. You will be able to find the ground.

Incidentally, in the initial guidance image shown in FIG. 7A, an enlarged view of a mark portion surrounded by a dotted line is shown in FIG. 7B.
As is clear from the above, the + mark of the cursor is displayed as the designated point indicating the position of the destination, and the destination mark "G" is displayed.
Is displayed so as to overlap with a part of the cursor (upper half).

Further, for example, the display control process (S33)
0 ') is executed and then the point mark display process shown in FIG. 8 is executed during the transition to the determination process of S340 shown in FIG. 4, the display as shown in FIG. It is also possible to display a point mark (the above-mentioned identification mark) representing a point of the same type as the destination on the road map near the destination displayed on the device 8 as an initial guidance image.

That is, as shown in FIG. 8, in S332,
The currently set destination classification (type) is searched from the guidance information, and in S334, a point that belongs to the same classification as the searched destination classification (type) is searched on the display map, and in S336. If the point mark display processing is executed in such a procedure that a point mark indicating the type is displayed at a point in the same category as the searched destination, the display device 8 displays the point when the destination is specified. On the displayed road map, points of the same type as the current destination will be displayed in an identifiable manner, and the user will be able to see the points of that point and set a new point of the same type as the already set destination. You can easily specify it as the ground.

The initial guidance image shown in FIG. 9 (a) is
It shows the case where the destination already set is "restaurant", but if the point mark is displayed with a figure showing the type of point like this, you can check the same type of point at a glance and it is extremely convenient. is there. Further, in this initial guidance image, FIG. 9B is an enlarged view of a mark portion surrounded by a dotted line.
As is clear from the above, as with the display of the destination mark "G", the + mark of the cursor is displayed as the designated point indicating the position of the destination, and the point mark is overlapped with a part of the cursor (upper half). Is displayed.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a configuration of an entire vehicle navigation device according to an embodiment.

FIG. 2 is a flowchart showing a travel route setting process of the embodiment.

FIG. 3 is a flowchart showing a travel route guidance process of the embodiment.

FIG. 4 is a flowchart showing a travel route resetting process of the embodiment.

FIG. 5 is an explanatory diagram illustrating a guide image displayed for designating a destination and its change when the travel route is reset.

FIG. 6 is a flowchart showing an example of a destination setting screen display process executed when a map near a destination is displayed as an initial guidance image.

FIG. 7 is an explanatory diagram illustrating a display screen when a map near a destination is displayed as an initial guidance image.

FIG. 8 is a flowchart showing an example of point mark display processing executed when a point mark is displayed on a map displayed as an initial guide image.

FIG. 9 is an explanatory diagram illustrating a display screen when a point mark is displayed on a map displayed as an initial guide image.

[Explanation of symbols]

2 ... GPS receiving unit 8 ... Display device 10 ... Control device 12 ... CD-ROM drive 14 ... Input device 1
6 ... Remote control receiver

Claims (6)

[Claims] 1. A display means for displaying a road map, a vehicle position detection means for detecting the current location of the vehicle, and a vehicle from an origin designated externally when the device is in a travel route setting mode. A traveling route calculating means for calculating an optimal traveling route for traveling to the ground, and a predetermined area including the present location detected by the vehicle position detecting means on the display means when the device is in the traveling route guiding mode. Of the road map, the travel route calculated by the travel route calculating means and the current location of the vehicle are displayed in a distinguishable manner on the displayed road map, and further displayed in accordance with the change of the current location. In a travel route guidance device for a vehicle, comprising: travel route display control means for updating the contents; Starting point setting means for setting an intersection in the traveling direction of the vehicle from the current position as a starting point for changing the traveling route, similarly, when the traveling route change command is input when the device is in the traveling route guidance mode, Guide image display control means for displaying a guide image for inputting a destination on the display means, and when the destination is designated from the outside according to the guide image displayed on the display means by the guide image display control means, the destination is specified. When the starting point and the ending point are respectively set by the ending point setting means and the ending point setting means, the route from the set starting point to the ending point is automatically calculated. When the route from the start point to the end point is calculated by the second traveling route calculation means and the second traveling route calculation means, the route is set as a new traveling route and the traveling route display is performed. The control means, the travel route guidance device for a vehicle, characterized by comprising a travel route update means for executing a path display based on the travel route, the. 2. The starting point setting means is located in front of the vehicle traveling direction from a point where the vehicle can reach after the traveling route is updated, based on the traveling speed of the vehicle and the time required to update the traveling route set in advance. The vehicle travel route guidance device according to claim 1, further comprising: searching for an intersection closest to the present location and setting the intersection as a starting point for changing the travel route. 3. The travel route display control means includes the second
When the traveling route calculation means of the above starts the route calculation from the start point to the end point, the display of the guide image by the guide image display control means is ended, and the display of the road map, the traveling route and the current position on the display means is restarted. The travel route guide device for a vehicle according to claim 1 or 2, wherein: 4. The guide image display control means, when the change command is input, displays a road map near the present location and a cursor for designating a new destination as an initial guide image for inputting the destination. Then, the display map is updated according to a map movement command input from the outside thereafter, the vehicle travel route guide device according to any one of claims 1 to 3. 5. The guide image display control means, when the change command is input, sets a road map around a currently set destination and a new destination designation as an initial guide image for inputting the destination. 4. The vehicle travel route guidance device according to claim 1, wherein the display map is updated in response to a map movement command input from the outside, and a displayed cursor is displayed. 6. The vehicle travel route guidance device according to claim 4 or 5, wherein the guidance image display control means retrieves a currently set type of destination from a database stored in advance. , Searching for a point of the same type as the destination on the road map displayed as the guide image,
A travel route guidance device for a vehicle, which displays an identification mark indicating a point type at a point of the same type as a destination on a road map being displayed based on the search result.