JPH056499A - Road information display device - Google Patents

Abstract

PURPOSE:To improve the safety of running by simultaneously and comparatively displaying the actual running condition of a vehicle itself and proper running indication information in the place to clearly and quickly discriminate the state for running. CONSTITUTION:A first luminous zone 7 and a second luminous zone 9 consisting of plural light emitting elements 27 and 29 are provided in the running direction of a vehicle 1 on a road 3. Running indication information for the vehicle 1 is operated in an arithmetic unit 11 based on road information stored in an information storage device 15 and the running operation of the vehicle detected by a vehicle detecting sensor 25, and the actual running condition of the vehicle and running indication information are comparatively displayed on first and second luminous zones 7 and 9 ahead of the vehicle in the running direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road information display device for comparing and displaying an actual traveling condition of a vehicle traveling on a road and traveling instruction information for the vehicle so as to improve traveling safety of the vehicle.

[0002]

2. Description of the Related Art Conventionally, as a device for displaying road information in order to improve driving safety of a vehicle, when a vehicle approaches a curve of a road, a headlight of the vehicle illuminated near the entrance of the curve is used. There is one that guides light using, for example, an optical fiber and irradiates the vicinity of the exit of a curve to improve the safety of traveling on the curve.

As another device, a headlight of a vehicle approaching a nighttime intersection is detected by a light emitting tack embedded in the center of the road intersection, and the light emitting time interval of the light emitting tack is changed with respect to the vehicle. In some cases, this indicates to the vehicle that the vehicle is approaching the intersection, and the driving safety of the vehicle at the intersection is improved.

Further, as another device developed from the light emitting tack, a plurality of light emitting bodies are provided in the same light emitting tack embedded in the center of the intersection, and the light emitting body is approached to the intersection by blinking or the like. The vehicle is notified of the approach of another vehicle from the roads on the left and right of the intersection, thereby improving driving safety at the intersection. In this case, instead of providing a plurality of light emitting members in the same light emitting tack, there is also a method of arranging a plurality of light emitting tacks in a straight line on the road, which also improves the safety of driving at the intersection. Can be improved.

Further, as a conventional device for controlling a traffic flow by using a light emitter embedded on a road, a display is provided at the rear of the vehicle so that a sufficient inter-vehicle distance can be maintained at an inflow route of a highway or the like. However, the display of the vehicle is not intended to notify the driver of the vehicle itself, but to the drivers of other vehicles in the rear. It does not actively give instructions and try to control traffic flow.

[0006]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention Each conventional device for displaying road information in order to improve the running safety of a vehicle merely informs the running condition or road condition as described above. However, there is a problem in that it is not possible to positively improve driving safety by adding consideration to the above, and there is also a problem in that there is no clear display that can be seen at a glance so that quick judgment can be made even while the vehicle is driving. ..

The present invention has been made in view of the above,
The purpose is to compare and display the actual driving situation of the own vehicle and the appropriate driving instruction information on the spot at the same time, which makes it possible to clearly and quickly determine the driving condition and improve the driving safety. To provide a possible road information display device.

[0008]

In order to achieve the above object, the road information display device of the present invention, as shown in FIG.
A plurality of first display means 101 arranged in the traveling direction of the vehicle on the road on which the vehicle travels to display the actual traveling status of the vehicle, and the first display means for instructing the traveling operation of the vehicle. A plurality of second display means 103 arranged substantially parallel to the road, road information storage means 105 storing information about the road, position detection means 107 for detecting the position of the vehicle, vehicle Traveling information detecting means 109 for detecting the actual traveling information of the vehicle including the speed, and the vehicle information based on the traveling information of the vehicle detected by the traveling information detecting means and the traveling information stored in the traveling information storing means. Computing means 111 for computing the traveling instruction information
And the actual traveling information of the vehicle detected by the traveling information detecting means and the computing means on the first and second display means in front of the traveling direction of the vehicle based on the position of the vehicle detected by the position detecting means. The gist of the present invention is to have the display control means 113 for controlling so that the traveling instruction information calculated in step 1 is displayed comparatively.

[0009]

In the road information display device of the present invention, a plurality of first and second display means are provided on the road in the traveling direction of the vehicle,
Driving instruction information for the vehicle is calculated based on the road information stored in the road information storage means and the traveling information of the vehicle detected by the traveling information detecting means, and is displayed on the first and second display means in front of the traveling direction of the vehicle. The actual traveling information of the vehicle and the calculated traveling instruction information are displayed in comparison with each other.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is an overall configuration diagram of a road information display device according to an embodiment of the present invention. In the road information display device shown in the figure, a light emitting body 5 is linearly provided in the traveling direction of the vehicle on a road 3 on which the vehicle 1 travels, and the vehicle 1 travels on the linearly provided light emitting body 5. It is sending light. This luminous body 5
Has a first light emitting band 7 which constitutes the first display means of the present invention and a second light emitting band 9 which constitutes the second display means of the present invention.

The first luminous band 7 is used for the vehicle 1 as will be described later.
When the vehicle 1 travels on the road 3, the first light emission zone slightly ahead of the vehicle 1 is adjusted in accordance with the traveling speed when the vehicle 1 travels on the road 3. 7 is designed to emit light. Further, the second light emitting zone 9 is for displaying the traveling instruction information, which is the optimal traveling condition including the guide route calculated according to the condition of the road 3 on which the vehicle 1 is traveling, by the light emitting operation. Specifically, for example, the target vehicle speed or the like according to the condition of the road 3 is displayed as indicated by the diagonal lines in correspondence with the actual traveling speed of the vehicle 1 by the first light emitting zone 7. The first luminous band 7 and the second luminous band 7 in FIG.
In the shaded display of the light emitting band 9 of FIG. 1, the first light emitting band 7 is shown slightly ahead of the second light emitting band 9, but this is the actual vehicle speed shown in the first light emitting band 7, for example. Means that is slightly faster than the target vehicle speed indicated by the second light emission zone 9,
This alerts the driver to reduce the actual vehicle speed to the target vehicle speed indicated by the second light emission zone 9, thereby improving the traveling safety.

The light emitting body 5 comprising the first light emitting zone 7 and the second light emitting zone 9 is connected to the arithmetic unit 11 constituting the arithmetic means and the display control means of the present invention, as shown by the arrow 17. The arithmetic unit 11 is further connected to the central processing unit 13 as indicated by an arrow 19, and is also connected to an information storage unit 15 constituting the road information storage means of the present invention as indicated by an arrow 21. The information storage device 15 stores information about the road 3, for example, information about the speed limit of the road 3.

FIG. 3 is a diagram showing in detail the structure of the luminous body 5. As shown in detail in FIG. 1, the first light emitting band 7 and the second light emitting band 9 which form the light emitting body 5 are each a plurality of light emitting elements arranged on the road 3 along the traveling direction of the vehicle 1. 27 and a plurality of light emitting elements 29, and each of the light emitting elements 27, 29 emits light independently of each other, whereby light can be emitted in front of the vehicle 1 according to the traveling speed of the vehicle 1, for example. The light emitting element 27 and the light emitting element 29 may emit light of the same color.
If it is configured to emit light in different colors, it is possible to more clearly recognize the difference in the light emitting state between the two.

Further, as shown in FIG. 3, the first emission band 7
Of the plurality of light emitting elements 27 and the second light emitting band 9
The raindrop sensor 23, the position detecting means of the present invention, the vehicle detecting sensor 25 and the optical sensor 31 constituting the traveling information detecting means are provided at appropriate intervals between each of the plurality of light emitting elements 29 constituting the. .. The raindrop sensor 23 is used to detect waterdrops on the light-emitting body 5 when it is raining, and thereby determine the dry or wet state of the road surface of the road 3. The vehicle detection sensor 25 detects the vehicle 1 and is used to detect the current position and vehicle speed of the vehicle 1. The optical sensor 31 is used to communicate with the vehicle 1.

FIG. 4 shows a light emitting pattern of the light emitting body 5 shown in FIG. 3 provided on the road 3, and various types of light emitting patterns provided on the rear surface 41 of the vehicle 1 corresponding to the light emitting pattern of the light emitting body 5. The light receiving part and the light emitting part are shown. Figure 4
In, the direction indicated by the arrows 33 and 35 is the traveling direction of the vehicle 1.

More specifically, in FIG. 4, the rear surface 41 of the vehicle 1 is provided with an automatic driving light receiving portion 45 composed of a large number of light receiving elements in a front portion indicated by an arrow 35, and on both sides of a rear portion. A light-receiving portion 47 and a light-receiving portion 49 are provided in and a light-emitting portion 43 is provided in the central portion.

Further, in FIG. 4, the light emitting body 5 provided on the road 3 is the same as that shown in FIG. 3, and the first light emitting band 7 including the plurality of light emitting elements 27 and the plurality of light emitting elements are provided. The second luminous band 9 consisting of 29, and the first luminous band 7
Raindrop sensor 23 provided between the second light emitting zone 9 and
Although the vehicle detection sensor 25 and the light sensor 31 are provided, the raindrop sensor 23 and the vehicle detection sensor 25 are not particularly shown in the light emission pattern shown in the figure, and only the two light sensors 31 are shown as the light emission pattern shaded. .. In addition, the plurality of light emitting elements 2 forming the first light emitting band 7 and the second light emitting band 9
Among the light emitting elements 7 and 29, the light emitting elements 27 and 29 shaded toward the front as shown by the arrow 33 correspond to the automatic driving light receiving portion 45 on the rear surface 41 of the vehicle 1 and emit light for automatic driving as a light emitting pattern. It is shown as comprising elements 27a, 29a.

Further, a plurality of light emitting elements 2 of the light emitting body 5 are provided.
Of the light emitting elements 27 and 29 corresponding to the three light emitting elements 27 and the light emitting elements 29 corresponding to the three light emitting elements 27, the light emitting patterns of which are shown by the diagonal lines toward the rear in the direction opposite to the arrow 33,
b, 29b.

Further, the light emitter 5 and the vehicle rear surface 41 shown in FIG.
A dotted arrow 37,
As shown by 39 and 40, the three signal transmitting light emitting elements 27b and 29b of the light emitting body 5 correspond to the light receiving portion 47 and the light receiving portion 49 of the vehicle rear surface 41, and the three signal transmitting light emitting elements Light from the elements 27b and 29b is received by the light receiving section 47 and the light receiving section 49 of the vehicle rear surface 41, and the shaded optical sensor 31 of the light emitting body 5 faces the light emitting section 43 of the vehicle rear surface 41. The light from the light emitting portion 43 is the light sensor 3
1, the light emitting elements 27a and 29a for automatic driving of the light emitting body 5 correspond to the light receiving section 45 for automatic driving on the rear surface 41 of the vehicle, and the light from the light emitting elements 27a and 29a for automatic driving is automatically driven. The light receiving section 45 can receive light.

That is, the signal transmitting light emitting elements 27b and 29b of the light emitting body 5 transmit signals to the vehicle 1 via the corresponding light receiving portions 47 and 49 of the vehicle rear surface 41, and the vehicle 1 outputs from the light emitting portion 43. A signal can be transmitted to the optical sensor 31 of the light emitter 5, so that the vehicle 1 and the road 3 side, specifically, the arithmetic unit 11, the central processing unit 13, and the information storage unit 15 can exchange signals with each other. It is like this.

FIG. 5 is a diagram showing the relationship between the light emitting portions and the light receiving portions of the light emitting body 5 shown in FIG. 4 and the light receiving portions and the light emitting portions of the vehicle rear surface 41 in an easy-to-understand manner. As described above, the light receiving unit 45 for automatic driving, the light emitting unit 43, and the light receiving units 47, 49 on the rear surface 41 of the vehicle 1 are respectively the light emitting elements 27a, 29a for automatic driving on the road 3, the optical sensor 31, and the signal transmitting unit. It corresponds to the light emitting elements 27b and 29b.

Next, the operation of the road information display device configured as described above will be described with reference to the flow charts shown in FIGS. The processes shown in FIGS. 6 to 8 are linked by the interlace symbol.

As shown in FIG. 2, when the vehicle 1 is traveling on the light emitter 5 on the road 3, the vehicle detection sensor 25 provided on the road 3 shown in FIG. 3 detects the vehicle 1. This detection signal is supplied to the arithmetic unit 11 (step 210), and the actual vehicle speed of the vehicle 1 is calculated (step 220).
Next, the raindrop sensor 23 detects the wet state on the road surface of the road 3 to determine whether or not it is a raining state (step 230). When it is determined that the vehicle is in a rainy state or a wet state, it is considered that the slip ratio of the road surface has changed as compared with the dry state. Therefore, the actual vehicle speed of the vehicle 1 calculated in step 220 is multiplied by k to determine the raindrop state. The vehicle speed according to the above is calculated, and this vehicle speed is used as the calculated vehicle speed (step 24).
0). If it is not raining, the actual vehicle speed is set to the calculated vehicle speed (step 250).

Next, the current position of the vehicle 1 is detected by the detection signal of the vehicle 1 from the vehicle detection sensor 25 (step 260). The position of the vehicle 1 changes from moment to moment, and needless to say, always need to be calculated.

Based on the vehicle speed and position information of the vehicle 1 calculated as described above, the first luminous band 7 of the luminous body 5 is shown in FIG.
In FIG. 5, the vehicle speed of the vehicle 1 is displayed by lighting for a long time in the traveling direction of the vehicle 1 as indicated by the diagonal lines. The lighting region of the first light emitting band 7 is changed and displayed such that it is long at high speed and short at low speed according to the calculated vehicle speed of the vehicle 1. While the first light emitting band 7 thus displays the calculated vehicle speed that is the actual vehicle speed of the vehicle 1, the second light emitting band 9 parallel to the first light emitting band 7 is the target, as will be described later. Display vehicle speed, etc. In FIG. 2, the vehicle speed displayed in the first light emitting band 7 is shown to be longer than the target vehicle speed displayed in the second light emitting band 9, which means that the vehicle speed in the first light emitting band 7 is the second. This is because the driver is informed that the speed of the vehicle is reduced to the target vehicle speed based on the second light emitting zone 9 because the vehicle speed is faster than the target vehicle speed based on the second light emitting zone 9.

On the other hand, it is determined whether or not the diagonal line on which the vehicle 1 is traveling is not an opposite diagonal line, is not a front red signal, etc., and is in a traveling state based on the information from the information storage device 15. (Step 280). If it is determined that the road 3 cannot be driven, the process proceeds to step 460 as indicated by the jump symbol, and the process to be described later from step 460 is performed without turning on the second light emitting zone 9. To do.

When the road 3 can travel, it is determined whether or not the optical signal from the light emitting portion 43 of the vehicle 1 is received by the receiving portion including the optical sensor 31 of the light emitting body 5 on the road 3. (Step 290).

When the signal from the light emitting section 43 of the vehicle 1 is received, the signal is supplied to the arithmetic unit 11 to perform the arithmetic operation (step 300). If no signal is received, the process proceeds to step 440. The signal from the vehicle 1 may be, for example, route guidance, information about automatic driving, turning left or right,
This is information about the intention of the driver such as changing lanes, and by calculating the signal, processing such as route guidance, automatic driving, turning left or right, and changing lanes is executed.

First, it is judged whether or not the route is to be guided (step 310). Once the route guidance is set, it is continued until the state is released. If it is determined that the route guidance is set, it is determined whether the route guidance is set or released (step 320), and the route guidance cancellation process ( The step 330) or the route guidance setting process (step 340) is performed, and the process proceeds to the next step 350. The route guidance is based on the signal from the central processing unit 13, for example, as shown in FIGS.
The second light emission zone 9 is turned on as shown in FIG. 3 to display the vehicle speed, the lane, and the traveling direction. The driver compares the lighting states of the first light emitting band 7 and the second light emitting band 9 with the vehicle speed,
You only have to decide the course.

At the next step 350, it is judged whether or not the operation is automatic. Settings and cancellations (steps 360, 370, 380) related to automatic driving are performed in the same manner as route guidance. Further, when the automatic driving is set, the vehicle 1 is guided by the central processing unit 13, and this is performed by turning on the light emitting part including the light emitting elements 27a and 29a for the automatic driving as shown in FIG. The vehicle 1 should follow this lighting light while receiving it by the light receiving unit 45 for automatic driving on the rear surface 41 of the vehicle (step 390).

Next, it is judged whether or not the turn is a right turn or a left turn (step 400). This is performed by the driver's intention, for example, by operating a direction indicator, but in the case of a left turn, for example, it is performed by displaying the second light emitting band 9 as shown in FIG. The driver should drive according to such a display. Further, in this case, when the road is prohibited from turning left, the second light emitting zone 9 is displayed as shown in FIG. Further, when a two-wheeled vehicle or the like is approaching and there is a possibility that an accident such as left turn involvement may occur, the display of the second light emitting zone 9 is shortened and the vehicle 1 is instructed to decelerate. Then, when the dangerous state disappears, the second light emitting band 9 is turned on as shown in FIG. As described above, when the setting and processing for turning left and right (step 410) are completed, the process proceeds to step 410.

In step 420, it is determined whether or not the lane is changed, and the lane change setting process is performed (step 43).
0). The lane change can be performed by controlling to turn off the first light emitting band 7 and turn on the second light emitting band 9 as in the case of route guidance. In this case as well, if it can be determined that there is a dangerous state such as a following vehicle approaching,
The states of the light emitting bands 7 and 9 are controlled so as not to be switched until the lane can be changed. If the driver does not have a particular intention to change the lane as described above, the traffic may be controlled by the traffic flow that the road administrator considers to be optimal.

As described above, route guidance, automatic driving,
When processing such as turning left or right, changing lanes, etc. is completed, and when there is no signal in the receiving unit composed of the optical sensor 31 in the above step 290, the above processing, the raindrop sensor 23, the vehicle detection sensor 25, the optical sensor 31, etc. are detected. Of the vehicle 1
Information about the road 3 from the information storage device 15, between the light emitting elements 27b and 29b for signal transmission of the light emitting body 5 and the light receiving portion 49 of the vehicle 1, and between the light emitting portion 43 of the vehicle 1 and the light emitting body 5.
The traveling instruction information is calculated in consideration of the information and the like obtained by exchanging signals with the optical sensor 31 of the optical sensor 31, and the optimum range for lighting the second light emitting band 9 of the light emitting body 5 is determined by this (step 440), for example, as shown in FIG. 2, the second light emitting band 9 is turned on in correspondence with the first light emitting band 7 (step 450).

Next, it is judged whether or not there is other information to be transmitted to the vehicle 1 (step 460). If there is no other information, the process returns to the first step 210.
The information is determined (step 470), the light emitting elements 27b and 29b for signal transmission are turned on in accordance with the information (step 480), and the light receiving portions 47 and 49 of the vehicle 1 receive the information, thereby causing the vehicle 1 to receive the information. Communicate the information and return to the first step 210. The communication in this case can be performed by encoding the signal by turning on and off the light emitting elements 27b and 29b for signal transmission at appropriate intervals.

Further, the above-mentioned example is, for example, an emergency vehicle,
It can also be applied when a route bus approaches.
In the case of an emergency vehicle, it is necessary for the ordinary vehicle to give up its course, but it can be smoothly guided by changing the lighting region of the second light emitting zone 9 as shown in the example of route guidance. Further, in the case of a route bus, when a general vehicle tries to travel in a lane dedicated to a bus, the second light emitting zone 9 is prevented from illuminating that lane, and guidance is provided to a lane in which the vehicle can travel at the same time. It suffices to display it.

[0037]

As described above, according to the present invention,
A plurality of first and second display means are provided on the road in the traveling direction of the vehicle, and the vehicle travels based on the road information stored in the road information storage means and the traveling information of the vehicle detected by the traveling information detecting means. Since the instruction information is calculated and the actual traveling information of the vehicle and the computed traveling instruction information are respectively displayed on the first and second display means in front of the traveling direction of the vehicle, the state in which the vehicle should travel can be seen at a glance. Therefore, it is possible to make a clear and quick decision, and improve the safety of vehicle running.

[Brief description of drawings]

FIG. 1 is a diagram corresponding to a claim of the present invention.

FIG. 2 is an overall configuration diagram of a road information display device according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a detailed configuration of a light emitter provided on a road used in the road information display device of FIG.

FIG. 4 is an explanatory diagram showing a light-emitting body provided on the road and a light-receiving unit and a light-emitting unit provided on the rear surface of the vehicle, which are used in the road information display device of FIG.

5 is an explanatory diagram showing the light emitter shown in FIG. 4 and a light receiving portion and a light emitting portion on the rear surface of the vehicle.

FIG. 6 is a flowchart showing an operation of the road information display device of FIG.

7 is a flowchart showing the operation of the road information display device of FIG.

FIG. 8 is a flowchart showing an operation of the road information display device of FIG.

9 is an explanatory diagram showing a display of a second light emitting band for guiding left turn by the road information display device of FIG. 2. FIG.

FIG. 10 is an explanatory diagram showing a display of a second light emitting band when a left turn is prohibited by the road information display device of FIG. 2;

[Explanation of symbols]

 1 Vehicle 3 Road 5 Light-Emitting Body 7 First Light-Emitting Zone 9 Second Light-Emitting Zone 11 Computing Device 15 Information Storage Device 25 Vehicle Detection Sensor 27, 29 Light-Emitting Element 31 Optical Sensor 43 Light-Emitting Unit 45 Autonomous Driving Light-Receiving Unit 47, 49 Light receiving section

Claims (1)

Claim: What is claimed is: 1. A plurality of first display means arranged in a traveling direction of a vehicle on a road on which the vehicle travels to display an actual traveling state of the vehicle, and a traveling operation of the vehicle. A plurality of second display means arranged on the road substantially parallel to the first display means for instructing, a road information storage means for storing information about the road, and a position of the vehicle are detected. Position detecting means, traveling information detecting means for detecting actual traveling information of the vehicle including vehicle speed, road information stored in the road information storing means and traveling of the vehicle detected by the traveling information detecting means. The travel information is displayed on the computing means that computes travel instruction information for the vehicle based on the information, and on the first and second display means in front of the travel direction of the vehicle based on the position of the vehicle detected by the position detection means. Road information display device characterized by having a display control means for controlling such travel instruction information calculated by the actual traveling information and the computing means output the vehicle detected by means for comparing displayed.