JP7271941B2 - Vehicle display system - Google Patents

Description

The present invention relates to display systems for vehicles.

Conventionally, there has been known a vehicle display system that notifies another person of an approaching vehicle by drawing and displaying a graphic warning mark (notification information) on the road surface of the intersection, for example. (See Patent Document 1, for example).

JP 2016-37260 A

However, when a plurality of vehicles equipped with the vehicle display system described in Patent Document 1 enter an intersection from different directions, the notification information drawn on the road surface overlaps and becomes invisible, resulting in insufficient notification. could become.

SUMMARY OF THE INVENTION The present invention has been made to solve such conventional problems, and its object is to provide a vehicle display system capable of improving the visibility of notification information drawn on a road surface. to do.

A vehicle display system according to one aspect of the present disclosure irradiates a road surface with notification information light corresponding to notification information to be notified to the outside, and displays the notification information on the road surface. The vehicle display system includes illumination means, mark determination means, priority determination means, and illumination control means. The irradiating means irradiates the road surface with recognition mark light having the same predetermined behavior as that of the other vehicle separately from the notification information light, and draws the recognition mark on the road surface. The mark determination means determines whether or not a recognition mark from another vehicle having a predetermined behavior is displayed on the road surface based on the captured image data . The priority determination means determines which of the notification information from the own vehicle and the notification information from the other vehicle has priority when the mark determination means determines that the recognition mark from the other vehicle is displayed on the road surface. It determines whether or not to display on the road surface. The irradiation control means controls the irradiation means according to the determination result of the priority determination means.

According to the present invention, it is determined which of the notification information from the own vehicle and the notification information from the other vehicle should be displayed preferentially, and the irradiation means is controlled according to the determination result. can be displayed on the road surface, and it is possible to prevent the two from overlapping and becoming difficult to see. Therefore, it is possible to improve the visibility of the notification information displayed on the road surface.

It is a block diagram showing the display system for vehicles concerning this embodiment. FIG. 4 is a top view showing examples of notification information and recognition marks according to the present embodiment; 3 is a top view showing an example of determination processing by a priority determination unit shown in FIG. 1; FIG. It is a top view which shows the other example of the determination processing by the priority determination part shown in FIG. 1, (a) has shown the 1st state, (b) has shown the 2nd state. 4 is a flowchart showing processing of the vehicle display system according to the embodiment;

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below along with preferred embodiments. It should be noted that the present invention is not limited to the embodiments described below, and can be modified as appropriate without departing from the gist of the present invention. In addition, in the embodiments shown below, there are places where illustrations and explanations of some configurations are omitted, but the details of the omitted technologies are as long as there is no contradiction with the contents explained below. Needless to say, well-known or well-known techniques are applied as appropriate.

FIG. 1 is a block diagram showing a vehicle display system according to this embodiment. As shown in FIG. 1, the vehicle display system 1 irradiates a road surface with notification information light corresponding to notification information to be notified to the outside, and displays the notification information on the road surface. This vehicle display system 1 includes a light source unit (illumination means) 10 , an on-vehicle camera (imaging means) 20 , a navigation system 30 , a radar unit 40 and a control device 50 .

The light source unit 10 irradiates the road surface with notification information light corresponding to the notification information in order to display the notification information to be notified to the outside on the road surface. Furthermore, in the present embodiment, the light source unit 10 also irradiates the road surface with the recognition mark light corresponding to the recognition mark accompanying the notification information to draw the recognition mark on the road surface.

FIG. 2 is a top view showing an example of notification information and recognition marks according to this embodiment. As shown in FIG. 2, in the vehicle display system 1 according to the present embodiment, the light source unit 10 irradiates the notification information light NII to display the notification information NI indicating that the vehicle is turning right or left on the road surface. Draw on top. Further, the light source unit 10 irradiates the road surface with the recognition mark light RMI so as to draw the recognition mark RM on the road surface in addition to the notification information NI. Here, the recognition mark RM is drawn so as to blink (an example of a predetermined behavior) at a frequency of 150 Hz or more, for example. In the example shown in FIG. 2, the recognition mark RM is a circle mark surrounding an equilateral triangle, but it is not limited to this shape.

The light source unit 10 shown in FIG. 1 includes, for example, a plurality of LEDs (Light Emitting Diodes) and a mechanical or optical mechanism for adjusting the light irradiation position. In the present embodiment, the light source unit 10 is assumed to be arranged, for example, in the headlight room, but it is not limited to this, and may be arranged in the central portion of the front surface of the vehicle, the ceiling portion of the vehicle, or the like.

The in-vehicle camera 20 is imaging means for imaging the surroundings of the own vehicle, particularly the front of the vehicle. The vehicle-mounted camera 20 transmits image data obtained by imaging to the control device 50 .

The navigation system 30 transmits map information, vehicle position information, route information, etc. to the driver in order to guide the vehicle to its destination. In this embodiment, the navigation system 30 transmits to the control device 50 position information of the own vehicle, information of the road on which the own vehicle is traveling, information of traffic regulations on the road on which the own vehicle is traveling, and the like.

The radar unit 40 is a millimeter-wave radar device for detecting surrounding obstacles. This radar unit 40 detects the distance and position to an obstacle based on the emitted millimeter-wave reflected wave.

The control device 50 controls the entire vehicle display system 1, and is configured by, for example, a vehicle ECU. The control device 50 includes a third person detection unit 51, an intersection detection unit 52, an irradiation control unit (irradiation control means) 53, a mark determination unit (mark determination unit) 54, and a road determination unit (road determination unit) 55. , and a priority determination unit (priority determination means) 56 .

The other person detection unit 51 detects other persons (pedestrians, bicycles, other vehicles, etc.).

The intersection detection unit 52 detects that the vehicle is about to enter an intersection (for example, intersection within a predetermined distance before)).

The irradiation control section 53 controls the light source unit 10 to irradiate the road surface with the notification information light NII and the recognition mark light RMI. When the other person detecting unit 51 detects another person approaching the own vehicle or detects that the own vehicle is about to enter an intersection, the illumination control unit 53 controls the notification information light NII and the recognition light NII. The road surface is irradiated with the mark light RMI to display the notification information NI and the recognition mark RM on the road surface.

The mark determination unit 54 determines whether or not the recognition mark RM from another vehicle is displayed on the road surface based on the captured image data obtained by the vehicle-mounted camera 20 . At this time, the mark judging section 54 judges the presence of the recognition mark RM based on a predetermined behavior. In this embodiment, the recognition mark RM has a blinking display (predetermined behavior display) at a frequency of 150 Hz or higher. Therefore, the mark determination unit 54 determines whether or not the recognition mark RM is displayed on the road surface based on whether or not there is a display blinking at a frequency of 150 Hz or higher on the road surface. In this case, the mark determination section 54 may determine whether or not the recognition mark RM is displayed, taking into consideration not only whether or not the mark blinks at a frequency of 150 Hz or higher, but also the shape of the mark.

The road determination unit 55 determines whether the vehicle is traveling on the priority road. The road determination unit 55 analyzes map information, vehicle position information, and traffic regulation information from the navigation system 30, and image data from the vehicle-mounted camera 20 to determine whether the vehicle is traveling on the priority road. to judge.

When the mark determination unit 54 determines that the recognition mark RM from the other vehicle is displayed on the road surface, the priority determination unit 56 determines the difference between the notification information NI from the own vehicle and the notification information NI from the other vehicle. It determines which one should be given priority and should be displayed on the road surface.

FIG. 3 is a top view showing an example of determination processing by the priority determination unit 56 shown in FIG. As shown in FIG. 3, it is assumed that the mark determining unit 54 determines that the recognition mark RM from another vehicle is displayed on the road surface before the own vehicle irradiates the road surface with the notification information light NII. In this case, the priority determination unit 56 determines that the notification information NI from the other vehicle is prioritized.

4A and 4B are top views showing another example of the judgment processing by the priority judgment unit 56 shown in FIG. 1, where (a) shows the first state and (b) shows the second state. . As shown in FIG. 4(a), before the own vehicle illuminates the road surface with the notification information light NII, the mark determination unit 54 determines that the recognition mark RM from the other vehicle is displayed on the road surface. and the road determination unit 55 determines that the host vehicle is traveling on the priority road. In this case, as shown in FIG. 4(b), the priority determination unit 56 determines that the notification information NI from the own vehicle is prioritized.

In this case, the other vehicle traveling on the road other than the priority road recognizes the recognition mark RM of the own vehicle displayed on the road surface, and since the self is not traveling on the priority road, the own notification information NI is prioritized. It will be judged that it is not something that should be done.

Please refer to FIG. 1 again. The irradiation control section 53 shown in FIG. 1 controls the light source unit 10 according to the determination result of the priority determination section 56 . When the priority determination unit 56 determines that the notification information NI from the other vehicle has priority, the illumination control unit 53 prohibits the illumination of the road surface with the notification information light NII and the recognition mark light RMI of the own vehicle. Further, when the priority determination unit 56 determines that the notification information NI from the own vehicle has priority, the illumination control unit 53 controls the light source unit 10 to emit the notification information light NII and the recognition mark light RMI from the own vehicle to the road surface. to irradiate.

FIG. 5 is a flow chart showing processing of the vehicle display system 1 according to the present embodiment. First, as shown in FIG. 5 , the other person detection unit 51 detects other persons (pedestrians, bicycles, other vehicles, etc.) approaching the own vehicle based on image data and the like captured by the in-vehicle camera 20 . ) exists (S1). If there is another person approaching the host vehicle (S1: YES), the process proceeds to step S7.

If there is no other person approaching the own vehicle (S1: NO), the intersection detection unit 52 determines whether the own vehicle is about to enter the intersection based on information from the navigation system 30 (S2: NO). ). If the own vehicle is not about to enter the intersection (S2: NO), the process proceeds to step S1.

On the other hand, if the own vehicle is about to enter the intersection (S2: YES), the mark determination unit 54 determines whether the recognition mark RM from the other vehicle is displayed on the road surface based on the image data captured by the vehicle-mounted camera 20. (S3). If the recognition mark RM from another vehicle is not displayed on the road surface (S3: NO), the process proceeds to step S7.

When the recognition mark RM from the other vehicle is displayed on the road surface (S3: YES), the road determination unit 55 determines whether the own vehicle is traveling on the priority road based on the information from the navigation system 30 or the like. It judges (S4). If the own vehicle is traveling on the priority road (S4: YES), the priority determination unit 56 determines that the recognition mark RM from the other vehicle was displayed on the road surface prior to the irradiation of the notification information light NII of the own vehicle. However, it is determined that priority is given to the notification information NI from the host vehicle (S5). After that, the process moves to step S7.

On the other hand, if the own vehicle is not traveling on the priority road (S4: NO), the priority determination unit 56 determines that the notification information NI from the other vehicle has priority (S6). After that, the process moves to step S1.

Further, in step S7, the irradiation control unit 53 irradiates the road surface with the notification information light NII to draw and display the notification information NI on the road surface (S7). After that, the process moves to step S1.

In this manner, according to the vehicle display system 1 according to the present embodiment, it is determined which of the notification information NI from the own vehicle and the notification information NI from the other vehicle should be preferentially displayed, and the determination is performed. Since the light source unit 10 is controlled according to the result, it is possible to display only one of the two pieces of notification information NI on the road surface, and it is possible to prevent the two from overlapping and becoming difficult to see. Therefore, it is possible to improve the visibility of the notification information NI displayed on the road surface.

Furthermore, the priority determining unit 56 determines whether or not the recognition mark RM from the other vehicle is displayed on the road surface, and determines which of the notification information NI of the own vehicle and the other vehicle should be prioritized. There is no need for vehicle-to-vehicle communication to make decisions.

Further, if it is determined that the recognition mark RM from the other vehicle is displayed on the road surface prior to the self-vehicle irradiating the notification information light NII onto the road surface, it is determined that the notification information NI from the other vehicle is prioritized, Since the irradiation of the road surface with the notification information light NII of the host vehicle is prohibited, the notification information NI displayed on the road surface first can be prioritized to prevent overlapping.

In addition, when it is determined that the recognition mark RM from the other vehicle is displayed on the road surface and the road determination unit 55 determines that the own vehicle is traveling on the priority road, a notification from the own vehicle It determines that the information NI is given priority, and controls the light source unit 10 to irradiate the road surface with the notification information light NII. Therefore, priority is given to the notification information NI of the vehicle that is traveling on the priority road and does not stop temporarily, so that overlap can be prevented.

In this case, the other vehicle traveling on the non-priority road recognizes the recognition mark RM of its own vehicle displayed on the road surface, and since it is not traveling on the priority road, it recognizes the road surface of the notification information light NII. is prohibited.

In addition, since the recognition mark RM exhibits a behavior of blinking at a frequency of 150 Hz or more, the light source unit 10 can recognize the behavior of blinking without making people such as drivers feel annoyed by the flickering. can be done.

As described above, the present invention has been described based on the embodiments, but the present invention is not limited to the above embodiments, and modifications may be made without departing from the scope of the present invention. You may combine well-known and well-known techniques.

For example, the recognition mark RM exhibits a predetermined behavior of blinking at a frequency of 150 Hz or more, but the predetermined behavior is not limited to this, and may be, for example, a blinking frequency that changes according to a prescribed rule, or a shape that changes. It may be something that changes according to a defined rule.

1: vehicle display system 10: light source unit (illumination means)
20: In-vehicle camera (imaging means)
30: Navigation system 40: Radar unit 50: Control device 51: Other person detection unit 52: Intersection detection unit 53: Irradiation control unit (irradiation control means)
54: mark determination unit (mark determination means)
55: Road judgment unit (road judgment means)
56: Priority determination unit (priority determination means)
NI: Notification information NII: Notification information light RM: Recognition mark RMI: Recognition mark light

Claims (4)

A vehicle display system that irradiates a road surface with notification information light corresponding to notification information to be notified to the outside and displays the notification information on the road surface,
irradiating means for irradiating a road surface with a recognition mark light corresponding to a recognition mark having the same predetermined behavior as that of another vehicle separately from the notification information light to draw the recognition mark on the road surface;
an imaging means for imaging the surroundings of the own vehicle;
mark determination means for determining whether the recognition mark from another vehicle having the predetermined behavior is displayed on the road surface, based on the captured image data obtained by the imaging means;
When the mark determination means determines that the recognition mark from the other vehicle is displayed on the road surface, which of the notification information from the own vehicle and the notification information from the other vehicle is preferentially displayed on the road surface. priority determination means for determining whether to display;
an irradiation control means for controlling the irradiation means according to the determination result of the priority determination means;
A vehicle display system comprising: If the mark determination means determines that the recognition mark from the other vehicle is displayed on the road surface before the own vehicle irradiates the notification information light onto the road surface, the priority determination means determines that the other vehicle It is determined that priority is given to notification information from
2. The method according to claim 1, wherein said irradiation control means prohibits irradiation of said notification information light from said own vehicle onto a road surface when said priority determination means determines that said notification information from other vehicles has priority. A vehicle display system as described. further comprising road determination means for determining whether the vehicle is traveling on a priority road;
The priority determination means determines that the own vehicle is traveling on the priority road by the road determination means when the mark determination means determines that the recognition mark from the other vehicle is displayed on the road surface. When it is, it is determined that the notification information from the own vehicle has priority,
2. The illumination control means controls the irradiation means to irradiate the road surface with the notification information light when the priority determination means determines that the notification information from the host vehicle has priority. The vehicle display system according to claim 2 . The vehicular display system according to any one of claims 1 to 3, wherein the recognition mark exhibits a blinking behavior at a frequency of 150 Hz or more.

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