JP6597128B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a vehicle display device that displays information in a vehicle.

  As a conventional vehicle display device, there is known an AR (Augmented Reality) display head-up display (HUD) device that displays an image so as to be superimposed on the outside world through a front window (Patent Document 1). reference). The head-up display device displays a plurality of incentive icons so as to be superimposed on the scenery in front of the traveling direction of the road on which the vehicle is traveling.

JP 2013-196359 A

  In Patent Document 1, a navigation device, a vehicle state sensor, an external sensor, a vehicle communication device, and the like are used in combination with a head-up display so as to be superimposed on an alert target such as a road sign or a road display. However, when there is another object near the alert target and the display overlaps the object, there is a problem that the display becomes difficult to read.

  An object of the present invention is to provide a display device for a vehicle that can instruct a left / right turn in advance even on a road where there is a blind corner due to a curve.

In order to solve the above problem, the intersection extraction unit extracts an intersection existing ahead of the host vehicle based on the host vehicle position detected by the host vehicle position detection unit. The display area inside / outside determination unit determines whether the intersection is within the display area provided to overlap the position of the front window based on the distance to the intersection calculated by the intersection distance calculation unit. The image generation unit generates an image instructing an intersection traveling direction when the display area inside / outside determination unit determines that the intersection is outside the display area, and the display area inside / outside determination unit determines that the intersection is within the display area. If it is determined, a plurality of marks indicating the route after changing the traveling direction are generated at the position of the intersection in the display area together with an image indicating the traveling direction of the intersection . When the intersection is determined to be outside the display area by the display area inside / outside determination unit , the display device displays an image generated on the extension of the traveling road and around the display area. When the intersection is determined to be within the display area by the inside / outside determination unit, the intersection of the display area is displayed along with an image indicating the traveling direction of the intersection generated on the extension of the traveling road and around the display area. A plurality of marks indicating the route after changing the traveling direction is displayed at the position.

  According to the present invention, it is determined whether or not the intersection is within the display area, and a guidance image corresponding to the determination result is generated and displayed in the display area. Therefore, even when the intersection is outside the display area at the start of the intersection guidance display, for example, an arrow indicating the traveling direction is displayed at the end of the display area. Thereby, even if it is a road where a blind corner due to a curve exists, it is possible to instruct a right or left turn in advance.

It is a figure which shows the structure of the display apparatus for vehicles which concerns on Example 1 of this invention. It is a flowchart for demonstrating operation | movement of the display apparatus for vehicles which concerns on Example 1 of this invention. It is a figure for demonstrating the determination operation | movement of the display area in the display apparatus for vehicles which concerns on Example 1 of this invention. It is a figure for demonstrating the example of a display in the display apparatus for vehicles which concerns on Example 1 of this invention.

  Hereinafter, a display device for a vehicle according to an embodiment of the present invention will be described in detail with reference to the drawings.

Example 1
FIG. 1 is a diagram illustrating a configuration of a vehicle display device according to a first embodiment of the present invention. The vehicle display device displays a guide route to the destination of the host vehicle, and includes a host vehicle position detection sensor 11, a navigation map information acquisition unit 12, a control device 13, and a display device 14.

  The own vehicle position detection sensor 11 detects the own vehicle position based on a positioning signal obtained from GPS (Global Positioning System), and outputs the detected own vehicle position to the control device 13 as own vehicle position information.

  The navigation map information acquisition unit 12 includes, for example, a disk device that stores map information, a communication device that acquires map information via a communication line, and the like, and outputs the acquired map information to the control device 13.

  The control device 13 generates an image to be displayed on the display device 14 and outputs it as image data to the display device 14. Details of the control device 13 will be described later.

  The display device 14 includes a projection unit that projects an image, a screen that reflects the image, a Fresnel mirror, and the like, and displays an image in a display region that is provided so as to overlap the position of a front window provided in the vehicle. To do. In particular, the display device 14 is a head-up display that can display an image superimposed on a landscape in front of the vehicle by projecting an image reflected by a mirror as a virtual image in front of the front window. However, the display device 14 is not limited to such a head-up display. For example, a combiner type using a transparent panel instead of displaying on the front window, or a method of directly displaying an image on the front window may be used. In other words, the head-up display of the present embodiment only needs to be able to display information superimposed on the scenery visually recognized by the driver through the front window without the driver lowering his head. According to the display device 14, by projecting various navigation marks on the front window, the operation of moving the viewpoint from the outside scene to the mark can be easily and quickly performed.

  Next, details of the control device 13 will be described. The control device 13 includes, for example, a microcomputer and includes a host vehicle position coordinate calculation unit 21, an intersection extraction unit 22, an intersection distance calculation unit 23, a display area inside / outside determination unit 24, and an image generation unit 25 that are realized by software. . The vehicle position detection unit of the present invention includes a vehicle position coordinate calculation unit 21 and a vehicle position detection sensor 11.

  The own vehicle position coordinate calculation unit 21 is based on the own vehicle position information sent from the own vehicle position detection sensor 11 and the map information sent from the navigation map information acquisition unit 12. Is calculated. The own vehicle position coordinate calculation unit 21 outputs the calculated coordinates to the intersection extraction unit 22 and the intersection distance calculation unit 23 as own vehicle position coordinate information.

  The intersection extraction unit 22 uses, as map information sent from the navigation map information acquisition unit 12, the intersection in the traveling direction that is closest to the position indicated by the coordinates sent from the vehicle position coordinate calculation unit 21. Extract based on. The intersection extraction unit 22 outputs the extracted intersection as intersection information to the intersection distance calculation unit 23.

  The intersection distance calculation unit 23 is based on the intersection information sent from the intersection extraction unit 22 and the own vehicle position coordinate information sent from the own vehicle position coordinate calculation unit 21, and from the current position of the own vehicle to the intersection. Calculate the distance. The intersection distance calculation unit 23 outputs the calculated distance to the display area inside / outside determination unit 24 as distance information.

  The display area inside / outside determination unit 24 determines whether an intersection existing at a distance indicated by the distance information transmitted from the intersection distance calculation unit 23 is within the display area of the display device 14, and generates a determination result as an image. To the unit 25.

  The image generation unit 25 generates an image for guiding the intersection traveling direction based on the determination result sent from the display area inside / outside determination unit 24. That is, when the display area inside / outside determination unit 24 determines that the intersection is outside the display area, the image generation unit 25 generates an arrow image that indicates the intersection traveling direction.

  When the display area inside / outside determination unit 24 determines that the intersection is within the display area, the image generation unit 25 displays the route after changing the direction of travel to the position of the intersection in the display area together with an image indicating the direction of travel of the intersection. An image to be shown is generated, and the generated image is output to the display device 14.

  In addition, the image generation unit 25 generates a plurality of marks (marks M1, M2, M3 shown in FIG. 4) for guiding the traveling direction of the vehicle at the intersection. The display device 14 displays the marks M1, M2, and M3 generated by the image generation unit 25 in the display area D.

  Next, the operation of the vehicular display device configured as described above will be described with reference to the flowchart shown in FIG. In the following description, an example in which a route (route) has already been calculated and a left turn is made at the next intersection will be described.

  When the operation is started, first, the vehicle position is detected (step S11). That is, the own vehicle position coordinate calculation unit 21 is based on the own vehicle position information sent from the own vehicle position detection sensor 11 and the map information sent from the navigation map information acquisition unit 12. The vehicle position coordinate information is output to the intersection extraction unit 22.

  Next, an intersection is extracted (step S12). That is, the intersection extraction unit 22 extracts the intersection in the traveling direction closest to the position indicated by the coordinates sent from the own vehicle position coordinate calculation unit 21 based on the map information acquired from the navigation map information acquisition unit 12, It outputs to the intersection distance calculation part 23 as intersection information.

  Next, the distance to the intersection is calculated (step S13). That is, the intersection distance calculation unit 23 is based on the intersection information sent from the intersection extraction unit 22 and the own vehicle position coordinate information sent from the own vehicle position coordinate calculation unit 21 to the intersection from the current position of the own vehicle. Is output to the display area inside / outside determination unit 24.

  Next, the image generation unit 25 generates a plurality of marks M1, M2, and M3 for guiding the traveling direction at the intersection based on the calculated distance to the intersection. The display device 14 displays the marks M1, M2, and M3 generated by the image generation unit 25 in the display area D as shown in FIG.

  Next, it is checked whether or not the intersection is in the display area D (step S14). That is, the display area inside / outside determination unit 24 determines whether or not the intersection C existing at the distance calculated by the intersection distance calculation unit 23 has entered the display area D of the display device 14, and the determination result is displayed as the image generation unit 25. Output to.

  Here, the display area D corresponds to the range of the field of view. For example, as shown in FIG. 3, when the vehicle 31 is at the position A, the intersection C is not in the field of view and is within the display area D. It is judged not to enter. On the other hand, when the host vehicle 31 travels to the position B, the intersection C enters the field of view, so it is determined that the vehicle 31 has entered the display area D.

  If it is determined in step S14 that the intersection C is not within the display area D, an image including only the arrow E in the turning direction is generated (step S15). When the determination result sent from the display area inside / outside determination unit 24 indicates that the intersection C is not within the display area D, the image generation unit 25 indicates the intersection traveling direction as shown in FIG. An image of arrow E to be generated is generated.

  In this example, the image generation unit 25 generates an image of an arrow E that indicates the left turn direction, and outputs the image to the display device 14 as image data. The display device 14 displays an image of the arrow E generated on the extension of the traveling road and around the display area D.

  Thus, the driver cannot know the intersection to be turned and the route after the turn, but can recognize that there is an intersection to turn when the vehicle travels a little more. That is, since the arrow indicating the direction of travel of the difference point is displayed at a position where the driver's viewpoint is easy to go, the time for recognizing the route can be greatly reduced. The recognition time could be reduced from, for example, 1.5 seconds to 0.2 seconds. Thereafter, the sequence proceeds to step S17.

  On the other hand, if it is determined in step S14 that the intersection C is within the display area D, an image including an arrow E and a route in a turning direction is generated (step S16). When the determination result sent from the display area inside / outside determination unit 24 indicates that the intersection C is within the display area D, the image generation unit 25 displays the intersection traveling direction as shown in FIG. An image to be instructed is generated.

  In this example, the image generation unit 25 generates an image of an arrow E that indicates the left turn direction, and outputs the image to the display device 14 as image data. In addition, the image generation unit 25 generates mark images M11, M12, and M13 indicating the route after changing the traveling direction at the position of the intersection C in the display area, and outputs the mark images M11, M12, and M13 as image data to the display device 14.

  The display device 14 displays the image of the arrow E indicating the intersection traveling direction generated on the extension of the traveling road and around the display area D, and is generated at the position of the intersection in the display area D. Mark images M11, M12, and M13 indicating the route after the change in the traveling direction are displayed.

  As a result, the driver can know the intersection to be turned and the route after the turn. Thereafter, the sequence proceeds to step S17.

  In step S17, image display is performed. That is, the display device 14 displays an image based on the image data sent from the image generation unit 25. Thereafter, the process ends.

  As described above, according to the vehicular display device according to the first embodiment of the present invention, it is determined whether an intersection is in the display area, and a guidance image corresponding to the determination result is generated and displayed. Display in the area.

  Accordingly, even when the intersection is outside the display area at the start of the intersection guidance display, for example, an arrow indicating the traveling direction is displayed at the end of the display area. Thereby, even if it is a road where a blind corner due to a curve exists, it is possible to instruct a right or left turn in advance.

DESCRIPTION OF SYMBOLS 11 Own vehicle position detection sensor 12 Navigation map information acquisition part 13 Control apparatus 14 Display apparatus 21 Own vehicle position coordinate calculation part 22 Intersection extraction part 23 Intersection distance calculation part 24 Display area inside / outside determination part 25 Image generation part

Claims (1)

A vehicle display device that displays a guide route to the destination of the vehicle,
A vehicle position detection unit for detecting the vehicle position;
An intersection extraction unit for extracting an intersection existing ahead of the vehicle position detected by the vehicle position detection unit;
An intersection distance calculation unit for calculating a distance to the intersection extracted by the intersection extraction unit;
Based on the distance to the intersection calculated by the intersection distance calculation unit, a display area inside / outside determination unit that determines whether the intersection is within a display area provided to overlap the position of the front window;
An image generation unit for generating an image for guidance of an intersection traveling direction according to a determination result in the display area inside / outside determination unit;
A display device for displaying the image generated by the image generation unit in the display area;
With
The image generation unit generates an image indicating an intersection traveling direction when the intersection is determined to be outside the display area by the display area inside / outside determination unit, and the display area inside / outside determination unit determines whether the intersection is within the display area. A plurality of marks indicating a route after changing the traveling direction at the position of the intersection of the display area, together with an image indicating the traveling direction of the intersection,
The display device, when said intersection by the display area outside judgment unit is determined to be outside the display area, displays the generated image on the periphery of the extension on the A and and the display area of the road running When the intersection is determined to be within the display area by the display area inside / outside determination unit, along with an image indicating the traveling direction of the intersection generated on the extension of the traveling road and around the display area A vehicle display device that displays a plurality of marks indicating the route after the change of the traveling direction generated at the position of the intersection of the display area .

Images