JP5311012B2 - Vehicle driving support device - Google Patents

Description

  The present invention relates to a vehicle driving support apparatus.

  Driving support information provided by a navigation device or the like is greatly useful for improving convenience during driving. On the other hand, how to display such driving support information on which part of the vehicle is a problem from the viewpoint of safety in vehicle travel.

  For example, Patent Literature 1 displays driving assistance information of a front windshield superimposed along a road ahead of the host vehicle. The invention of Patent Literature 1 describes the speed of the subject vehicle as driving assistance information. Proposes an image that encourages deceleration in response to overloading. However, in the method of displaying on the front windshield, there is a possibility that the line-of-sight movement necessary for the driver to visually recognize this becomes large depending on the display location.

  By the way, in order to make an automobile driving support device easy to use, it is necessary to improve the ease with which the driver visually recognizes and understands the display information. When analyzing a series of actions to acquire display information, in which the driver visually recognizes and understands the display information, the operation for the display information to be acquired by the driver is as follows. Move to the display position (step (I) in FIG. 12), then (2) pay attention to the display information and read the information (steps (II) & (III) in FIG. 12), and (3) information display position 3 steps of returning the line of sight to the front (step (IV) in FIG. 12).

The time (t _off ) required for this series of three steps is the time required for the driver to acquire the information displayed by the driving support device, and corresponds to the time when the driver keeps his eyes away from the front. For this reason, it is required for the driving support device to shorten the time (t _off ) required for the series of three steps as much as possible. Here, the conventional development approach focuses on the information reading time (step (III) in FIG. 12), and many studies have been conducted on the amount of information displayed and the readability of displayed characters. It has been broken.

JP 2006-31618 A

  According to the research of the present inventor, even if the driver visually recognizes information at the same display position, for example, when the driving burden is large for the driver such as crowded city driving, the line of sight moves from the front to the information display position. The eye movement time tends to increase. Conversely, when the driving burden is low for a driver such as a relatively free highway, the line-of-sight movement time tends to be short. It was also found that the allowable time for keeping an eye on the front differs depending on the driving load. For example, in a traveling state with a heavy driving burden, the allowable time during which the eyes can be taken from the front is shortened.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle driving support device that can optimize information display according to the driving burden of a driver.

Explaining the basic concept of the present invention, an allowable time (t _off ) in which the driver can keep an eye from the front is determined according to the driving burden of the driver, and the line of sight is within the allowable time (t _off ). Optimize the time allocation between the movement (t _m ) ((I), (IV) in FIG. 12) and the time available to watch the information (t _r ) ((II) (III) in FIG. 12) Therefore, the size of the information display range is controlled, and preferably the information display arrangement is determined according to the information content (time and priority required for reading), so that the driver can easily display the display information. And it can be safely visually recognized.

According to the present invention, the above technical problem is
In the vehicle driving support device having an information display unit that can be visually recognized by the driver, and displaying driving support information on the information display unit,
Driving information acquisition means for acquiring driving information of the host vehicle;
Display information determination means for determining driving support information to be displayed based on information from the travel information acquisition means;
A load detection means for detecting the driving load of the driver;
With regard to the allowable time during which the driver can take his eyes off the front in order to return the line of sight to the front after moving the line of sight from the front to the information display unit and confirming the driving support information displayed on the information display unit, Permissible time determining means for determining the permissible time according to the driving burden of the driver based on a signal from the burden degree detecting means;
A signal from the permissible time determining means, a signal from the display information determination unit, on the basis of the signal from the burden of detecting means determines the display range of the driving support information to be displayed on the information display unit and a display range determination unit, further,
A driver characteristic detecting means for detecting a driver characteristic related to quickness of reading display information;
This is achieved by providing a vehicle driving support device comprising display range correction means for correcting the size of the display range according to the driver characteristic detected by the driver characteristic detection means .

That is, according to the present invention, the information display method is variably controlled in accordance with the driving burden level of the driver, and the driving support information display range when the driving burden level is large, such as driving in a congested urban area, depending on the driving burden level of the driver. On the contrary, when the driving load is low, such as when driving straight on an expressway, the display range according to the driving situation can be optimized by expanding the display range of the driving support information. In addition, it is possible to display information according to the characteristics of the driver.

In a preferred embodiment of the present invention,
Reference gaze stop area calculating means for detecting a direction of the driver's gaze and obtaining a reference gaze stop area where the driver's gaze is stopped for a long time; and the reference gaze stop area calculated by the reference gaze stop area calculating means Display position determining means for determining the display position of the driving support information based on the display position is further included. According to this embodiment, the safety can be improved by optimizing the time for the driver to move the line of sight in order to read the display information.

In a preferred embodiment of the present invention,
Information priority order determining means for determining the priority order of the driving support information displayed on the information display section is further provided, and the display position is changed based on the priority order determined by the information priority order determining means. According to this embodiment, since information is displayed at a display position corresponding to the priority of information, safety can be improved by optimizing the time required for the driver's line-of-sight movement.

In a preferred embodiment of the present invention,
It further comprises a risk detection means for detecting the risk of other vehicles or pedestrians coming into contact with or colliding with the host vehicle, and the allowable time determination means is configured to detect the risk according to the risk detected by the risk detection means. Allowable time is determined. According to this embodiment, since the allowable time is set according to the degree of risk, for example, when the risk is high, a short allowable time is set so that the driver can read the information display. Time can be shortened, and the accuracy of avoiding danger from a collision or the like can be improved.

In a preferred embodiment of the present invention,
When the degree of danger detected by the degree of danger detection means is greater than a predetermined value, danger information is displayed on the information display unit by interruption processing. According to this embodiment, it is possible to quickly display danger information when a danger level occurs.

In a preferred embodiment of the present invention,
When the driver's driving burden detected by the burden degree detecting means is large, the driver is in the driving assistance information having the higher priority regarding the display position of the display information having the higher priority determined by the information priority determining means. The display position of the driving assistance information with the higher priority is set at a position where the movement time for moving the line of sight is short. Thus, the priority can be set to the display information, and the information can be quickly read by the driver by displaying the information at a position where the line-of-sight movement time is short with respect to the information with high priority.

First, the principle of display range control in the driving support apparatus of the embodiment will be described.
When the line-of-sight movement time is t _m and the viewing angle is x, the following formula 1 is established.

(Formula 1) t _m = a ₁ x + a ₀
Here, a ₁ and a ₀ are coefficients of the regression model.

On the other hand, it was found from the basic experiment in the laboratory that the coefficient a ₁ that determines the increment of the eye movement time with respect to the viewing angle is a function of the driving burden. For example, assuming that the driving burden is w, a function equation represented by the following equation 2 is assumed.

(Formula 2) a ₁ = b ₁ w + b ₀
Here, b ₁ and b ₀ are coefficients of the regression model.

  From the above formulas 1 and 2, the relational expression of the line-of-sight movement time, the viewing angle, and the driving burden can be expressed by the following formula 3.

(Formula 3) t _m = (b ₁ w + b ₀ ) x + a ₀
Where, w: Driving burden
x: viewing angle
t _m : Eye movement time

Referring to FIG. 12, the allowable time (t _off ) in which eyes can be taken from the front is based on the gaze movement time (t _m ) and the gaze time (information reading time + preparation time) (t _r ). It can be represented by the following formula 4.
(Equation _{4) t off = 2t m +} t r = 2 × {(b 1 w + b 0) x + a 0} + t r

Solving the above equation 4 with respect to the viewing angle x, the following equation 5 is obtained.
(Formula 5) x = (t _{off −tr} −2a ₀ ) / 2 (b ₁ w + b ₀ )

From the above formula 5, the viewing angle range (x) in which the driver can move his / her line of sight to the information display position with a margin according to the magnitude (w) of the driving burden can be obtained. . Here, the allowable time (t _off ) that the driver can keep an eye on from the front is a function of the driving burden (w) during normal driving. For example, when the driving burden is low, such as a free highway, the allowable time (t _off ) increases (the time during which you can keep an eye from the front is comparatively long), and the driving burden, such as crowded urban driving, increases. When it is high, the permissible time (t _off ) becomes small (there is almost no time to keep an eye from the front).

Even when the degree of driving burden is relatively low, in situations where the danger has become apparent or is becoming apparent, such as when an abnormal approach to the preceding vehicle or an attempt to change lanes without noticing the approach of the rear vehicle, It is preferable to discard the control based on the above-described function, assign a small value according to the degree of danger that has become apparent, and display information related to danger at a narrow display position where the driver can easily move the line of sight. As a control for this purpose, the allowable time (t _off ) should preferably have a value quoted from the database by interruption upon detecting an increase in the risk in addition to the calculation using the driving burden (w).

In addition, coefficients b ₁ and b ₀ that determine the relationship between the coefficient (a ₁ ) that determines the increase in the line-of-sight movement time (t _m ) with respect to the viewing angle (x) and the driving burden (w) are the driver personal characteristics ( For example, it differs depending on characteristics of how to use the attention function, sensitivity to driving burden, beginner / expert, etc. For example, even if the driving load is increased by the same amount, the amount of increase in the line-of-sight movement time with respect to the viewing angle is greater for beginners than for skilled workers, so b ₁ and b ₀ are different from each other. Therefore, in order to further enhance the effect of the display range control, a relationship model between the driving burden (w) and the coefficient (a ₁ ) that determines the increment of the line-of-sight movement time (t _m ) with respect to the viewing angle (x) for each driver characteristic. It is good to make. That is, it is preferable to perform correction based on the driver personal characteristics.

Similarly, the gaze time (information reading time + preparation time) (t _r ) is affected by driver personal characteristics. For example, the preparation time required for focus adjustment and the like is longer for elderly people with poor visual functions, and depending on the display color, the reading time is longer for elderly and color-impaired people. Therefore, in order to further enhance the effect of the display range control, it is preferable to correct the information reading time based on the driver individual characteristics.

  In addition, the range (outside / inside of the vehicle) where the driver is mainly gazing differs depending on the driving scene. For example, on a highway, the frequency of looking at a room mirror increases, and the side mirror is watched for preparation for overtaking. As another example, the driver looks at the front landscape when traveling alone in a relatively free urban area, and looks at the front vehicle when traveling following the preceding vehicle. For this reason, it is desirable to variably set the display range based on the area where the driver's line of sight is stationary while measuring the area where the driver's line of sight is stationary without fixing the display position. .

  A first embodiment of the present invention will be described with reference to FIG. 1. An automobile 10 includes a front monitoring camera 12 for monitoring the front and a driver line-of-sight monitoring camera 14 arranged toward the head of the driver D. The driver's line-of-sight monitoring camera 14 detects the direction of the line of sight of the driver D. Reference numeral 16 denotes a steering handle, and the steering angle of the steering handle is detected by a steering angle sensor 18. In addition, pedal sensors 20 and 22 are respectively provided in the brake pedal and the accelerator pedal (both not shown), and the depression of the brake pedal and the accelerator pedal is detected by each pedal sensor 20 or 22. The rudder angle sensor 18 and the pedal sensors 20 and 22 constitute a part of the driving load detection means for measuring the driving load of the driver, which will be described later.

  The automobile 10 is equipped with an audio system (not shown), and an operation unit of the audio system is denoted by reference numeral 24. Further, the automobile 10 includes a road-to-vehicle communication system 26 for performing communication between adjacent vehicles, a GPS 28, and a navigation unit 30, and information for assisting the driver D in driving is provided to the front windshield 32. Is displayed.

  FIG. 2 is a block diagram showing the overall system of the driving support device 40. The driving support device 40 includes a display information determining unit 42 that determines information to be displayed on the front windshield 32, that is, driving support information. The display information determining unit 42 includes a road-to-vehicle communication system 26, a GPS 28, a navigation unit. A traveling information signal of the host vehicle is input from 30 or the like, and navigation display information for the driver D is generated based on, for example, a current position signal acquired from the GPS 28, map data input from the navigation unit 30, and store information.

  Pedal sensors 20 and 22 installed in relation to the brake pedal and the accelerator pedal, the steering angle sensor 18 of the steering handle 16, the vehicle speed sensor (not shown), the driving load measuring unit such as the navigation unit 30, and the like are the driving load calculating unit. The driving load applied to the driver D based on the following indices is measured in a multifaceted manner.

(1) The frequency and / or amount of operation of the steering handle 16, accelerator pedal, and brake pedal;
(2) Magnitude of absolute values and changes in acceleration and vehicle speed;
(3) The speed of change in the scenery while driving, the complexity of changes;
(4) Bad road environment / high driving burden based on map information and route guidance information of the navigation unit 30 (narrow road, complicated route, road with many curves, road with many intersections, etc.);
(5) The number of other traffic participants (neighboring vehicles, pedestrians, bicycles, etc.) based on sensor information outside the vehicle;
(6) Degree of decrease in the driver's consciousness level based on the steering amount of the steering wheel 16 or blink image processing;
(7) Driver fatigue based on changes in seat contact pressure, etc .;
(8) Depression of circadian rhythm based on a change in heart rate (detected from a steering sensor or the like) of driver D (circadian rhythm = diurnal variation in the degree of driver bioactivity).

  In the driving load calculation unit 44, the current driving load level of the driver D is calculated based on the comprehensive index obtained by processing the individual driving load calculated from the above-described index of each item.

Signals from various sensors that detect the risk of contact or collision with the host vehicle such as the front monitoring camera 12 are input to the risk calculation unit 46, and the risk calculation unit 46 uses the surrounding vehicle, pedestrian, and bicycle. The degree of danger such as the approaching state is calculated. Here, the risk level means a risk level in a range that is in front of a situation where an emergency control intervention such as PCS is about to be activated and that the driver is aware of the risk and can sufficiently avoid by his / her own operation. The calculated degree of risk is converted into the allowable time t _off based on the risk-allowable time conversion table in the database 48.

Based on the driving load degree calculated by the driving load calculating unit 44, the allowable time calculating unit 50 calculates an allowable time t _off that allows the driver D to keep an eye on the front. Here, when the above-described risk level calculation unit 46 detects a prediction risk level that is greater than or equal to a predetermined value, that is, a risk level that is greater than or equal to the manifested predetermined value, the allowable time calculation unit 50 receives an interrupt from the risk level calculation unit 46, Immediately switches to danger information display.

In the display range calculation unit 52 of FIG. 2, display is performed based on the display information determined by the display information determination unit 42 described above and the time required for reading (gaze time _tr ) calculated by the information reading time determination unit 54. A display range for displaying information on the front windshield 32 is calculated. In the display range calculation unit 52, the viewing angle x is calculated using the above-described Expression 5.

To quote Equation 5 here:
(Formula 5) x = (t _{off −tr} −2a ₀ ) / 2 (b ₁ w + b ₀ )
Here, t _off is an allowable time, and _tr is a gaze time (information reading time + preparation time).

  After obtaining the viewing angle x by the display range calculation unit 52, the display position determination unit 56 determines at which position on the front windshield 32 the display information is to be displayed. In order to determine the display position, the line of sight of the driver D is always tracked by means such as image processing of the eyeball of the driver D acquired by the driver sight line monitoring camera 14 prior to that, and the line of sight stays the longest within a certain time. The outside / in-vehicle position (reference gaze stop area) is calculated. The display position determination unit 56 determines the display range of the display information based on the reference line-of-sight stop area, and the priority of the display information is taken into consideration when determining the display range. The priority of the display information is determined by the information priority order determination unit 58. For example, the route information has a high priority, and the display information with a high priority is a position where the visual angle with the reference visual line stop area is the smallest in the range of the visual angle x (the position where the visual line movement of the driver D is the smallest). ) Determines the display position. Conversely, information that has low priority and needs to be displayed at all times is always displayed at a position where the viewing angle increases, and information that does not need to be displayed at all times is popped up as necessary at a position where the viewing angle increases. You may do it.

  FIG. 3 is a flowchart illustrating an example of control related to driving support display. In step S1, various types of information are taken in, and then in step S2, it is determined whether the risk of a bicycle colliding with or contacting the host vehicle is greater than a predetermined value. If YES (there is a danger level) in step S2, the process proceeds to step S3, and the display range of the danger information is calculated. In the next step S4, the display position is calculated based on the reference line-of-sight stop area of the driver D, and the danger information is displayed at the calculated display position (S5). FIG. 4 is an explanatory diagram of an example in which danger information is displayed on the front windshield 32. In this example, the reference line-of-sight stop area of the driver D is located in a substantially central area of the front windshield 32. In the drawing, the line of sight of the driver D is indicated by an arrow. In this case, the display 60 of “There is a right approaching vehicle” as the danger information in the reference line of sight stop area of the driver D is limited to the small display range A. Therefore, the driver D can watch the display of “the vehicle is approaching right” without moving the line of sight almost. This danger information may be displayed in larger characters as the degree of danger increases.

Returning to the flowchart of FIG. 3, when it is determined NO in step S2, that is, there is no pedestrian or bicycle that collides with or comes into contact with the host vehicle, the process proceeds to step S6 to determine whether there is information to be displayed. If YES (there is display information), the process proceeds to step S7 to calculate the driving burden, then the information reading time _tr is calculated in step S8, and then the information is displayed in step S9. The range (viewing angle x) is calculated, and information priority is calculated in the next step S10. In the next step S11, if there are a plurality of pieces of information to be displayed, the display position is determined for each display information on the basis of the reference line-of-sight stop area of the driver D.

  FIG. 5 shows a display example when the vehicle is traveling in a section with many straight lines on an expressway as an example in which the degree of risk is equal to or less than a predetermined value and the driving burden on the driver D is small. Here, the reference line-of-sight stop area of the driver D is located in the room mirror 62. The information display displayed in the vicinity of the room mirror 62 is set to an enlarged range A. In this enlarged display range A, a route guidance (“500 m ahead branch” and an arrow indicating the branch direction) 64 is the line of sight of the driver D. In the display range A, the road traffic information (“3 km ahead traffic jam”) 66 is displayed in the upper right corner that does not obstruct the front view of the driver D. Further, for example, when there is a sightseeing spot nearby, an information display 68 of “with sightseeing spot information” is displayed at the lower right corner of the display range A, for example, in a pop-up manner or intermittently.

  In FIG. 6, as an example in which the degree of risk is less than a predetermined value and the driving burden on the driver D is relatively large, the vehicle travels on a highway with a lot of winding, and the driver D is traveling with attention ahead. A display example is shown. In this display example, the display range A is set in the reference line-of-sight stop area of the driver D who is gazing forward, and the route guidance (“500 m ahead branch” and an arrow pointing to the branch direction are located in the vicinity of the line of sight of the driver D. ) 64 is displayed. In addition, the constantly displayed traffic information (“3 km ahead traffic jam”) 66 is displayed in the lower left corner of the display range A that does not obstruct the front view of the driver D. Further, for example, when there is a sightseeing spot nearby, an information display 68 of “with sightseeing spot information” is displayed at the lower right corner of the display range A, for example, in a pop-up manner or intermittently.

  When the driving load on the driver D is particularly large as in a crowded city area, it is preferable to set the display range A in the reference line-of-sight stop area of the driver D who is gazing ahead and to reduce the display range A. As a result, the driver's line-of-sight movement required to read the information displayed in the display range A can be minimized.

FIG. 7 shows a modified example of the display example of FIG. 6. In this modified example, large letters and arrow marks are used to display route guidance (“500 m ahead branch” and an arrow indicating the branch direction) 64. Yes. Thereby, the time required for the reading step (III) described in FIG. 12 can be shortened. The time required for the driver D to acquire information, that is, the time t _off for the driver D to look away from the front for information acquisition by enlarging the display characters and marks in this manner is within the time determined by the reading time determination unit 54. Can be adjusted.

  FIG. 8 is a block diagram of the driving support apparatus 100 according to the second embodiment, and portions different from the driving support apparatus 40 according to the first embodiment described above are surrounded by a broken line. In the second embodiment, the characteristic of the driver D, that is, the characteristic whether or not information can be acquired quickly is determined, and the display is optimized in accordance with the characteristic of the driver D.

Referring to FIG. 8, driver characteristic determination unit 102 determines the following characteristics of driver D from the manner of operation of audio operation unit 24 and the like, for example, the frequency of operation and repetition of a plurality of operations.
(1) Whether you have the ability to handle multiple tasks simultaneously or deal with new tasks;
(2) Whether there is a tendency of “working while” (if there is a tendency of “working while”, it is considered that multiple displays can be read quickly);

When the driver characteristics of the above (1) and (2), that is, characteristics that can quickly grasp displayed information are collectively referred to as “while” characteristics, the information reading time determination unit 54 described in the first embodiment The time required for reading (gaze time _tr ) is determined with reference to the correction database 104 and the quoted value database 106. Further, the display range calculation unit 52 corrects the display range according to the “while” characteristic, and the driver D has the ability to quickly read the display information (in the case of a driver having a large “while” tendency). The correction for enlarging the display range A is performed. On the other hand, in the case of the driver D having a small tendency “while”, correction for reducing the display range A is performed, and the display range A having a size corresponding to the characteristics of the driver is set.

FIG. 9 is a diagram for explaining an example in which the coefficient b1 is corrected based on the magnitude of the “while” characteristic. In Expression 5 described above, a relatively small b ₁₁ is set for the driver D having a large “while” tendency, and a relatively large b ₁₂ is set for the driver D having a small “while” tendency. Similarly, in the information priority order determination unit 58, the priority order of the display information is determined with reference to the quoted value database 108 according to the magnitude of the “while” tendency.

  FIG. 10 is a flowchart showing an example of display control in the driving support apparatus of the second embodiment. The same steps as those in the flowchart of FIG. 3 described above are denoted by the same step numbers, and the description thereof is omitted. The feature point of will be described.

  If there is information to be displayed in step S6, the process proceeds to step S7 because the answer is YES, and after calculating the driving load w, the driver characteristic calculating process is performed in step S20, and the next step S21 is performed. Then, the driver characteristic correction coefficient calculation process is executed. As a result, display optimization corresponding to driver characteristics can be realized.

  FIG. 11 is a display example when the vehicle is traveling on a section with a large amount of winding on an expressway, which is an example in which the degree of risk is equal to or less than a predetermined value and the driving load on the driver D is relatively large, as in FIG. Indicates. Due to the characteristics of the driver D, when the tendency is “while”, a relatively large display range A is set because it has the ability to execute a plurality of things at the same time and has the ability to quickly grasp the display information. On the contrary, when the tendency “while” is small, that is, for a driver whose display information is grasped at a low speed, a relatively small display range A is set.

  As mentioned above, although the Example of this invention was described based on the example which displays driving assistance information on the front windshield 32, as a display part which displays driving assistance information, an instrument panel of a full liquid crystal, a head up display, a pillar Projection (projection) display on interior materials such as trim and trim may also be used.

It is a figure for demonstrating the various sensors, cameras, etc. which are included in the driving assistance device of an Example. It is a block diagram of the driving assistance device of the 1st example. It is a flowchart for demonstrating an example of the display control in 1st Example. It is a figure for demonstrating the example of a display of 1st Example, and is an example of a display when the other vehicles etc. which exist in the circumference | surroundings of the own vehicle have a high risk of colliding with or contacting the own vehicle. It is a figure for demonstrating the example of a display of 1st Example, and is a display example when a driver | operator's burden is comparatively small like driving | running | working of the highway with many straight lines. It is a figure for demonstrating the example of a display of 1st Example, and is a display example when a driver | operator's burden is comparatively large like driving | running | working the area with much winding on an expressway. It is a figure for demonstrating the modification of the example of a display of FIG. It is a block diagram of the driving assistance device of the 2nd example. It is a figure for demonstrating the correction | amendment relevant to the driver characteristic by the presence or absence of the "while characteristic" relevant to the ability to read display information rapidly. It is a flowchart for demonstrating an example of the display control in 2nd Example. It is a figure for demonstrating display control in 2nd Example by the specific example of a display. It is a figure for demonstrating a series of processes in which display information is read by a driver.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Car 12 Front monitoring camera 14 Driver gaze monitoring camera 16 Steering handle 18 Steering angle sensor 20 Pedal sensor 22 Pedal sensor 24 Audio operation part 30 Navigation unit 32 Front windshield 40 Driving support device 42 of 1st Example 42 Display information determination part 44 Driving burden calculation unit 46 Risk level calculation unit 50 Permissible time calculation unit 52 Display range calculation unit 54 Information reading time determination unit 56 Display position determination unit 58 Information priority order determination unit 100 Driving support device 102 of the second embodiment 102 Driver characteristic determination unit A Display range

Claims (8)

In the vehicle driving support device having an information display unit that can be visually recognized by the driver, and displaying driving support information on the information display unit,
Driving information acquisition means for acquiring driving information of the host vehicle;
Display information determination means for determining driving support information to be displayed based on information from the travel information acquisition means;
A load detection means for detecting the driving load of the driver;
With regard to the allowable time during which the driver can take his eyes off the front in order to return the line of sight to the front after moving the line of sight from the front to the information display unit and confirming the driving support information displayed on the information display unit, Permissible time determining means for determining the permissible time according to the driving burden of the driver based on a signal from the burden degree detecting means;
A signal from the permissible time determining means, a signal from the display information determination unit, on the basis of the signal from the burden of detecting means, the display range decision of the driver assist information to be displayed on the information display unit and a display range determination means for, further,
A driver characteristic detecting means for detecting a driver characteristic related to quickness of reading display information;
A vehicle driving support apparatus, comprising: display range correction means for correcting the size of the display range in accordance with the driver characteristic detected by the driver characteristic detection means . A reference gaze stop area calculating means for detecting a direction of the driver's gaze and obtaining a reference gaze stop area where the driver's gaze is stopped for a long time;
The vehicle driving support device according to claim 1, further comprising display position determining means for determining a display position of the driving support information based on the reference visual line stop area obtained by the reference visual line stop area calculating means. Further comprising information priority order determining means for determining the priority order of the driving support information displayed on the information display section;
The vehicle driving support apparatus according to claim 2, wherein the display position is changed based on the priority order determined by the information priority order determining means. Among the priority levels determined by the information priority level determining means, the display information having the highest priority is displayed at the position where the viewing angle with the reference line-of-sight stop area is the smallest in the display range of the driving support information. The vehicle driving support device according to claim 3, wherein It further comprises a risk detection means for detecting the risk of contact or collision of other vehicles or pedestrians with the host vehicle,
The vehicle driving support device according to claim 1, wherein the allowable time determination unit determines the allowable time according to the risk detected by the risk detection unit. 6. The vehicle driving support device according to claim 5 , wherein when the risk detected by the risk detection means is greater than a predetermined value, risk information is displayed on the information display unit by interrupt processing. The driver characteristic detecting means determines that the driver has a driver characteristic that quickly reads display information when the operation frequency is high, depending on the operation frequency of the operation member operated by the driver, and the display range correction means performs the display. The vehicle driving support device according to any one of claims 1 to 6 , wherein the range is expanded.   When the driver's driving burden detected by the burden degree detecting means is large, the driver is in the driving assistance information having the higher priority regarding the display position of the display information having the higher priority determined by the information priority determining means. The vehicle driving support device according to claim 3, wherein the display position of the driving assistance information having a high priority is set at a position where the movement time for moving the line of sight is short.

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