JPH06307881A - Route display device for vehicle - Google Patents

Abstract

PURPOSE:To enable the approach of a vehicle from a general road (toll road) to a toll road (general road) with a guide by providing a display means for displaying the present position and an entrance/exit. CONSTITUTION:In the case of performing the route guide to a destination, a driver commands a desired destination on a faceplate of a display unit, or inputs 19 the place name. A route from the real position ascertained by a real position measuring unit 12 to the input destination is computed 22, and this route is stored 24. A route guide control unit 26 reads out the map information around of a vehicle from a map information storage unit 10, and displays 28 it so that the real position and the traveling direction of the vehicle are overlapped with the stored 24 route. A driver can confirm the position of own vehicle on the basis of the displayed information, and obtains the information on the route. Route guide is thereby performed by the display 28, but furthermore, in the case where a vehicle approaches from a general road (toll road) to a toll road (general road), a specific display processing is performed to secure the route guide for the driver.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle route display device, and more particularly to a display for guiding a route from an ordinary road to a toll road or from a toll road to an ordinary road.

[0002]

2. Description of the Related Art Conventionally, various devices have been studied to reduce the driving operation of a driver and have been mounted on a vehicle. A route guiding device for guiding along a route to a destination. Is one of them. In the route guidance device,
It has a function to inform the driver of the route to be selected when passing through a branch point such as an intersection, and an image display device with a display is provided on the instrument panel of the vehicle as currently used for practical use. There is a route display device that displays a route on a display to inform the driver.

In such a route display device, for example, when guiding from a general road to a toll road, it is necessary to accurately notify the driver of that fact. For example, JP-A-62-88
In the vehicle route guidance device disclosed in Japanese Patent No. 099, a configuration is displayed in which, when an intersection that should be passed next is an entrance branch point when entering an expressway from a general road according to the selected route, it is displayed that the entering expressway will be entered. Is proposed. 12
Shows an example of the screen display at this time, and a message "please enter at high speed" is displayed at a predetermined position on the screen together with the traveling distance.

[0004]

However, in the above-mentioned prior art, when the route guidance is performed, the fact is displayed only when the next intersection is the entrance / exit of the expressway. There was a problem that the driver could not accurately grasp the entrance and exit of the car.

In addition, as shown in FIG. 13, when there are exits and exits of a highway near each other, which entrance or exit is guided even if the message "please enter the expressway" is displayed? Sometimes I didn't understand.

The present invention has been made in view of the above problems of the prior art, and the purpose thereof is to allow a driver to accurately know where on the guide route the toll road should be used. An object of the present invention is to provide a route display device for a vehicle that can enter from a road to a toll road or from a toll road to a general road.

[0007]

In order to achieve the above object, a vehicle route display device according to claim 1 is a vehicle route display device for calculating a route to a destination and displaying it on a map. The present position display means for displaying the current traveling position on the route, and the entrance / exit display means for displaying the entrance of the toll road and the exit from the toll road at the change point between the general road and the toll road on the route. However, the present driving position and the entrance / exit of the toll road are superimposed and displayed on the map.

In order to achieve the above object, the vehicle route display device according to a second aspect of the present invention further includes a branch mark for displaying a branch mark on the route when the type change point is a branch point of a predetermined shape. And a display means for displaying the current traveling position, the entrance and exit of the toll road, and the branch mark in a superimposed manner on the map.

[0009]

As described above, in the vehicle route display device according to the first aspect of the present invention, as in the prior art, when the next intersection is an entrance from a general road to a toll road, a message is not displayed but a route is displayed. The entrance is displayed at the point where the types of the general road and the toll road are changed. At this time, the current traveling position of the vehicle is displayed along with the entrance and exit on the route, so that the driver can accurately grasp the entrance and exit in relation to the present position.

Further, in the vehicle route display device according to the second aspect, when the type change point is a predetermined shape, for example, a branch point of a crossroad, this branch mark is also displayed together with the entrance and exit and the current traveling position. .

Therefore, the driver can know not only the entrance and exit in relation to the current position but also the shape of the branch, so that the route from the current traveling position to the entrance and exit can be correctly recognized. .

[0012]

【Example】

First Embodiment Hereinafter, a preferred embodiment of the vehicle route display device of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of this apparatus. A map information storage unit 10 for storing information such as roads, place names, building names, river names, etc. is provided, and the stored map information is read out as necessary. In addition, a GPS receiver 14 that uses a satellite navigation system (hereinafter referred to as GPS) for measuring the current position of the vehicle, a direction sensor 16 that detects the traveling direction of the vehicle based on the geomagnetism, and steering steering. A steering sensor 17 for detecting a changed course from a corner and a distance sensor 18 for detecting a traveling distance by the number of rotations of wheels are provided. Based on detection signals from these sensors, the current position measuring unit 12 is provided.
Determines the current position of the vehicle.

In order to guide the route to the destination, the desired destination is designated by the input unit 19 on the screen of the display unit, which will be described later, or input by the place name, and is determined by the current position measuring unit 12. A route from the current position to the input destination is calculated by the route calculation unit 22 in the calculation unit 20, and the calculated route is stored in the route storage unit 24.
Then, the route guidance control unit 26 included in the calculation unit 20 reads out the map information around the own vehicle from the map information storage unit 10 and superimposes it with the current own vehicle position and traveling direction and the route stored in the route storage unit 24. Is displayed on the display unit 28.

The display unit 28 is provided in the instrument panel near the driver's seat, and the driver can see the display unit 28.
It is possible to confirm the position of the own vehicle from the information displayed in and to obtain information about future routes.

When the position of the vehicle approaches an intersection where the route should be changed, the display of the display unit 28 is switched, and at the same time, the route guidance control unit 26 causes the voice control unit 30 to generate the voice corresponding to the route guidance at the intersection. Give instructions. Voice control unit 3
0 reads the information stored as digital data in the voice storage unit, converts it into an analog signal, and drives the speaker 34. Then, the speaker 34 guides the route such as "Turn left at the next intersection."
This voice instruction is given every predetermined distance until the vehicle passes the intersection. An example of a screen display during route guidance is described in detail in Japanese Patent Application No. 4-264005 filed by the applicant of the present application.

In this way, the driver is guided according to the route displayed on the display unit 28. In this embodiment,
Furthermore, when entering from a general road to a toll road or exiting from a toll road to a general road, special display processing is performed to ensure the route guidance of the driver. FIG. 2 shows a processing flowchart at the type change point in this embodiment, and FIGS. 3 and 4 show display examples on the display unit 28 at this time.

In FIG. 2, first, branch point data within a predetermined distance (5 km in this embodiment) on the route from the current position is input (S101). The branch point data includes, for example, road types before and after branching, branching angles, road widths, and the like. Then, it is determined whether or not the types of toll roads and general roads change before and after the branch (S102). If the type changes before and after the branch, it is next determined whether or not the change is from a general road to a toll road (S103). If it is a change from a general road to a toll road, a toll entrance mark is displayed at the type change point (S104). FIG. 3 shows an example of a screen in which “Type” is displayed at the type change point in this way. The current running position of the vehicle is also displayed in the figure at the same time, and this entrance position is grasped in relation to the current position. On the other hand, if it is not a change from a general road to a toll road, that is, if it is a change from a toll road to a general road, a toll exit mark is displayed at the type change point (S105). FIG. 4 shows an example of a screen display in which “exit” is displayed at the type change point, the current traveling position is also displayed at the same time as in FIG. 3, and the exit position is immediately grasped in relation to the current position. . In this way, the entrance or exit is displayed as appropriate at the type change point, and it is determined whether or not the vehicle has reached the destination (S106).

As described above, in this embodiment, since the type change point is displayed as "entrance" or "exit", for example, even when the entrance to the toll road is present in the vicinity as shown in FIG. As shown in FIG. 6, “entrance” is displayed at the entrance position (interchange) to enter the toll road (in FIG. 6, the entrance is displayed at the interchange located at the upper part of the figure, that is, far from the current position). The driver can immediately recognize from which interchange the vehicle should enter the toll road, and misleading can be prevented.

Second Embodiment In the first embodiment described above, "entrance" or "exit" is displayed at the type change point between the general road and the toll road.
In the present embodiment, when the shape of the branch point is a predetermined shape, the shape of the branch point is also displayed at the same time for the convenience of the driver.

FIG. 7 shows a processing flowchart of this embodiment, and FIGS. 8 to 11 show examples of screen displays in this embodiment.

The block diagram of this embodiment is the same as the block diagram of the first embodiment (see FIG. 1).

In FIG. 7, first, branch point data within a predetermined distance (for example, 5 km) on the route from the current position is input in the same manner as in the first embodiment (S200). Next, it is determined whether or not the input branch point data is a branch point that requires route guidance (S
201). This judgment is made based on the data of the link angle between the approach road and the guide road and the road width. For example, when it is judged that the road is a road, it is judged that the route guidance is not necessary. (See Japanese Patent Application No. 4-193572 previously filed by the applicant of the present application). If it is determined that the road is a branching point that requires route guidance, it is next determined whether or not the road ahead of the branching point is a general road (S202). If it is a general road, the branch mark of the general road is displayed on the map (S204), and if the front of the branch point is not a general road, that is, if it is a toll road, the branch mark of the toll road is displayed on the map. Is displayed on the screen (S203). FIG. 8 shows a display example of the branch mark when the front of the branch point is an ordinary road, and FIG. 9 shows a display example of the branch mark when the front of the branch point is a toll road.

In this way, after the branch mark is displayed together with the current position, the same processing as in the first embodiment described above is performed. That is, it is determined whether or not the types of toll roads and ordinary roads change before and after the branch (S205), and if the change is from ordinary roads to toll roads, a toll entrance mark is displayed on the map ( (S206, S207), in the case of a change from a toll road to a general road, a toll exit mark is displayed on the map (S208). When the pay entrance and pay exit are displayed, in the first embodiment described above, the display is made at the type change point, but in the present example, the branch mark is already displayed at the type change point. The display of “entrance” and “exit” is displayed on the route to be guided near the type change point. FIG. 10 shows a display example of “entrance”, and FIG. 11 shows a display example of “exit”.

As can be seen from FIGS. 10 and 11, in the present embodiment, the current traveling position, the branch mark, and the entrance / exit display are simultaneously displayed on the same screen, so that the entrance / exit is recognized in relation to the current position. While being able to
Since the shape of the branch point can also be grasped, the vehicle driver can accurately grasp the route from the current position to the entrance to the toll road or the exit to the general road.

[0026]

As described above, according to the route display device for a vehicle of the present invention, the fact that the toll road is entered and the tow road is exited is displayed together with the current position at the type change point. It is possible to accurately inform the vehicle driver at which position of the type should be changed.

Further, even when the general road and the toll road are parallel to each other, since the display of the entrance or the exit is displayed at the type change point, it is possible to immediately recognize which one should be driven.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of an embodiment of the present invention.

FIG. 2 is a processing flowchart of the first embodiment of the present invention.

FIG. 3 is a diagram showing a screen on which “entrance” is displayed in the first embodiment of the present invention.

FIG. 4 is a diagram showing a screen on which “exit” is displayed in the first embodiment of the present invention.

FIG. 5 is a diagram showing a screen in the case where interchanges on an expressway are present in close proximity.

FIG. 6 is a diagram showing a screen of “entrance” display in the first embodiment of the present invention.

FIG. 7 is a processing flowchart of the second embodiment of the present invention.

FIG. 8 is a diagram showing a screen for displaying a branch mark in the second embodiment of the present invention.

FIG. 9 is a diagram showing a screen for displaying a branch mark in the second embodiment of the present invention.

FIG. 10 is a diagram showing a branch mark and an “entrance” display screen in the second embodiment of the present invention.

FIG. 11 is a diagram showing a branch mark and an “exit” display screen in the second embodiment of the present invention.

FIG. 12 is a diagram showing a screen display of a conventional device.

FIG. 13 is a diagram showing a screen display in a conventional device.

[Explanation of symbols]

 10 map information storage unit 19 input unit 20 calculation unit 22 route calculation unit 28 display unit

Claims (2)

[Claims] 1. A route display device for a vehicle for calculating a route to a destination and displaying it on a map, including a current position display means for displaying a current traveling position on the route, an ordinary road on the route and a toll. And an entrance / exit display unit for displaying an entrance to the toll road and an exit from the toll road at a change point with the road, and displaying the current traveling position and the entrance / exit of the toll road by superimposing them on a map. Characteristic vehicle route display device 2. The vehicle route display device according to claim 1, further comprising branch mark display means for displaying a branch mark on the route when the type change point is a branch point of a predetermined shape. A route display device for a vehicle, which displays a current traveling position, an entrance / exit of a toll road, and a branch mark in a superimposed manner on a map.