JP2013185870A - Vehicular navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular navigation device which enables a user to understand a guide direction at first glance even under severely bad condition of visibility by emphatically displaying a screen area of the guide direction in a manner to blink it.SOLUTION: A vehicular navigation device includes a position detector 1 and a screen display section 3, and can set a destination by using a navigation program 41a. A guide route is displayed on the screen display section 3 along with map data 41b stored in a storage section 4. A guide direction after a road junction is specified as a screen area, according to the guide route with respect to the set destination, and guide direction display means 23 displays the screen area in a manner of blinking it.

Description

  The present invention relates to a vehicle navigation apparatus.

  In a conventional vehicle navigation apparatus, as a technique for easily grasping a travel route and a guidance direction, a technique for emphasizing a line width of a guidance route and displaying a guidance arrow in the guidance direction in a superimposed manner is known. (For example, refer to Patent Document 1).

JP 2008-96268 A

  However, with conventional vehicle navigation devices, motorcycles and bicycles can get a screen that cannot be understood at a glance because of water droplets on the screen and helmet shield when it rains. There is sex.

  The present invention has been made to solve the conventional problem, and by flashing / highlighting the screen area in the guidance direction, the guidance direction can be grasped at a glance even under extremely poor visibility. An object of the present invention is to provide a vehicle navigation device that can perform the above-described operation.

  In order to achieve the above object, the present invention has a configuration provided with a guidance direction display means for blinking and displaying a screen area corresponding to each guidance direction at the time of branch guidance.

  According to the present invention, since the guidance direction display means for flashing and displaying the screen area corresponding to each guidance direction at the time of branch guidance is provided, the visibility of the screen is extremely poor, such as when the motorcycle is used in rainy weather. Even below, the branch guidance can be understood at a glance.

The block diagram which shows the structure of the navigation apparatus for vehicles in embodiment of this invention. Example of branch guidance display in the same embodiment The flowchart which shows the flow of the branch guidance display program in the same embodiment The figure explaining the boundary of the screen area which blinks in the same embodiment, and the guidance direction corresponding to each screen area A flowchart for explaining setting of a time interval for blinking display in the embodiment

  Hereinafter, a vehicle navigation apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a vehicle navigation apparatus according to an embodiment of the present invention.
In FIG. 1, the vehicle navigation apparatus 100 includes a position detection unit 1, a screen display unit 3, a storage unit 4, and a control unit 2 to which these are connected.
The control unit 2 includes a CPU 21. The CPU 21 performs control based on the navigation program 41 a and data stored in the storage unit 4. The CPU 21 controls the reading / writing of data to / from the storage unit 4. The CPU 21 calls and executes the navigation program 41a and the branch guidance display program 41c, thereby realizing the guidance direction display means 23 of the present invention.

The drawing unit 22 generates display screen data to be displayed on the screen display unit 3 from the map data 41b stored in the storage unit 4, display data, and display color data.
The storage unit 4 stores map data 41b including road data representing road connections in addition to the navigation program 41a. The map data 41b stores predetermined map image information for display, and stores road network information including link information and node information. The link information is predetermined section information constituting each road, and includes position coordinates, distance, required time, road width, number of lanes, speed limit, and the like. The node information is information that defines an intersection (branch road) and the like, and includes position coordinates, the number of right / left turn lanes, a connection destination road link, and the like.
The screen display unit 3 is composed of a known color liquid crystal device. Display is performed based on the display command and display screen data sent from the control unit 2.

  FIG. 2 shows a display example at the time of branch guidance by the guidance direction display means 23. FIG. 2A shows a display example in which the screen area in the right direction is blinked, and FIG. 2B shows the screen area in the left direction. A display example of blinking display, FIG. 10C shows a display example of blinking the front left screen area, and FIG. 10D shows a display example of blinking the diagonally right screen area.

FIG. 3 is a flowchart showing the flow of processing by the guidance direction display means 23.
The guidance direction display means 23 executes the branch guidance display program 41c when the destination is set by the navigation program 41a and guidance for the set destination is started.
The branch guidance display program 41c has a branch determination unit. The branch determination means determines that the current position detected by the position detector 1 has approached a branch point such as an intersection (S11). When the branch determination means determines that the branch point has approached a predetermined distance, the guidance direction display means 23 acquires branch point map data for displaying the approach branch point from the map data 41b. (S12).
After the acquisition, the guidance direction display means 23 specifies the guidance direction screen area, and acquires and sets the guidance direction display screen data 41d for blinking and displaying the specified guidance direction screen area (S13). Specifically, the guidance direction after the branch point is specified as a screen area by the guidance route for the set destination, and the time interval for blinking the specified screen area is acquired.

  As shown in FIG. 4, the screen area to be blinked is divided into a plurality of sections as the screen area around the branch point around the branch point, and the guidance direction after the branch point from the divided screen areas. Set the screen area corresponding to. FIG. 4 shows a case where the screen area is divided into eight sections, namely, straight ahead direction, diagonal left direction, left direction, front left direction, U-turn direction, diagonal right direction, right direction, and front right direction. It may be divided into

  The time interval for blinking display is set according to the distance from the current location to the intersection as shown in FIG. FIG. 5 shows a case where the blinking interval is shortened as the distance from the current location to the intersection (branch point) becomes shorter, and the blinking interval is set in three stages.

In step 14, the current position data of the vehicle is acquired from the position detector 1, and the current position display is set. The guide direction display means 23 determines whether or not the acquired current position has already passed the branch point (S15). If it is determined in step 15 that the vehicle has not passed the branch point, the branch guidance display is continued (S16), and the guidance direction display means 23 performs the branch point guidance display in the highlight mode on the screen display unit 3 (S13). ).
On the other hand, if it is determined in step 15 that the branch point has already been passed, the guidance direction display means 23 cancels the branch guidance display setting (S17), ends the branch guidance display program 41c, and Return to the display mode setting.

  The present invention is particularly suitable for a vehicle navigation apparatus used in a motorcycle.

DESCRIPTION OF SYMBOLS 1 Position detection part 2 Control part 3 Screen display part 23 Guidance direction display means 41a Navigation program 41b Map data 41c Branch guidance display program 41d Screen data for guidance direction display

Claims (3)

A vehicle navigation apparatus comprising a position detection unit and a screen display unit, capable of setting a destination by a navigation program, and displaying a guide route together with map data stored in a storage unit on the screen display unit,
A navigation apparatus for a vehicle, comprising: a guidance direction display means for specifying a guidance direction after a branch point as a screen area based on the set guidance route for the destination and displaying the screen area in a blinking manner. A branch determination means for determining that the current position detected by the position detection unit has approached the branch point;
When the branch determination unit determines that the branch point has approached a predetermined distance, the guide direction display unit displays branch point map data for displaying the branch point approaching the map. The vehicle navigation apparatus according to claim 1, wherein the navigation apparatus is obtained from data.   In the guide direction display means, the branch point map data is divided into a plurality of sections as the screen area around the branch point with the branch point as a center, and the branch is selected from the screen areas divided into a plurality of sections. The vehicle navigation device according to claim 2, wherein the screen area corresponding to the guide direction after the point is set as the screen area to be blinked.