JP2013119305A - Driving support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving support device capable of accurately notifying a driver of the presence of a vehicle approaching from a rear side, and that the vehicle is approaching from which side of the right and left rear sides of the own vehicle.SOLUTION: A radar 12 for a rear side determines that a vehicle is approaching, when an interval of the own vehicle and the approaching vehicle in the rear side of the own vehicle is a predetermined threshold or less, and from which side, right or left rear side of the own vehicle the vehicle is approaching, and determination information for showing a determination result is provided for a side rear side notification ECU 34. A window driving device 28 opens/closes a left window 30 or a right window 32 on the basis of an instruction from a body system ECU 36. The rear side notification ECU 34 and the body system ECU 36 function as control means which changes a window state of an approaching side of the approaching vehicle of windows of the own vehicle, on the basis of the determination result of a direction determination means.

Description

  The present invention relates to a driving support device that supports driving of a vehicle.

A driving support device that detects the approaching vehicle from the rear side of the host vehicle using a camera or radar mounted on the host vehicle and informs the driver that the approaching vehicle is approaching based on the detection result is proposed. (See Patent Document 1).
The driving support device uses a lamp and an icon incorporated in the instrument panel or a buzzer that generates a sound as means for notifying the approaching vehicle.

JP 2002-104116 A

However, in recent years, automobiles have used multiple lamps and icons or multiple sounds to provide various information to the driver, and these types will continue to increase in the future. is there.
Therefore, when a vehicle approaching from the rear side is notified using a lamp, an icon, or a warning sound, the driver can easily recognize that the notification operation indicates a vehicle approaching from the rear side. I am concerned that it will disappear.
The present invention has been made in view of such circumstances, and its purpose is that there is an approaching vehicle from the rear side, and the approaching vehicle approaches from either the left or right side of the rear side of the host vehicle. An object of the present invention is to provide a driving support device that can accurately notify the driver of whether the vehicle is driving.

  In order to achieve the above object, the present invention provides a driving support device that notifies a driver that the approaching vehicle is approaching based on a detection result of the approaching vehicle from the rear side of the host vehicle. Direction determining means for determining whether the approaching vehicle is approaching from the left or right side of the rear side of the own vehicle, and the approaching vehicle is approaching among the windows of the own vehicle based on the determination result of the direction determining means. And a control means for changing the state of the window on the side of the vehicle in a form that can be recognized by the driver.

According to the first aspect of the present invention, the state of the window on the side where the approaching vehicle is approaching among the windows of the host vehicle is changed in a form that the driver can recognize. Therefore, it is possible to accurately notify the driver whether there is an approaching vehicle from the rear side and whether the approaching vehicle is approaching from the left or right side of the rear side of the host vehicle.
According to the second aspect of the present invention, since the change of the window state is made by changing the opening of the window, the movement of the window occurs, which is advantageous in prompting the driver to be alerted.
According to the third aspect of the present invention, the larger the amount of rain, the smaller the opening of the window. Therefore, when the amount of rain is large, the intrusion of rain into the passenger compartment can be suppressed.
According to the invention described in claim 4, since the opening degree of the window is reduced as the vehicle speed is higher, the amount of wind blown into the passenger compartment or the wind noise when the vehicle speed is high, such as when traveling on a highway, is suppressed. Can do.
According to the fifth aspect of the present invention, since the change of the window state is made by changing the transmittance of the window, the brightness of the passenger compartment changes, which is advantageous in prompting the driver to be alerted. is there.
According to the sixth aspect of the present invention, even if the approaching vehicle from the rear side is frequently determined, the state of the window does not change when the own vehicle does not change lanes. It can be avoided.

It is a block diagram which shows the structure of the driving assistance device 10 which concerns on 1st Embodiment. It is a flowchart explaining operation | movement of the driving assistance apparatus 10 in 1st Embodiment. It is a block diagram which shows the structure of the driving assistance device 10 which concerns on 2nd Embodiment. It is a flowchart explaining operation | movement of the driving assistance apparatus 10 in 2nd Embodiment.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a driving support apparatus 10 according to an embodiment of the present invention.
The driving support device 10 is mounted on the host vehicle, and includes a rear side radar 12, a direction indicating switch 14, a notification function switch 16, a rainfall sensor 18, a vehicle speed sensor 20, a notification lamp 22, and a notification. The buzzer 24, the side mirror display 26, the window drive unit 28, the left window 30, the right window 32, the rear side notification ECU 34, and the body system ECU 36 are configured.

The rear side radar 12 detects an approaching vehicle behind the host vehicle.
The rear side radar 12 determines that an approaching vehicle is present when the distance between the host vehicle and the approaching vehicle behind the host vehicle is equal to or less than a predetermined threshold, and the approaching vehicle is on the left side of the host vehicle. And determination information indicating these determination results is supplied to the rear side notification ECU 34.
Therefore, the rear side radar 12 functions as direction determination means for determining whether the approaching vehicle is approaching from the left or right side of the rear side of the host vehicle.
Further, in place of the rear side radar 12, an imaging device that captures the rear of the host vehicle and generates image data is provided, and whether or not an approaching vehicle exists based on the image data by the rear side notification ECU 34. It may be determined whether the approaching vehicle is on the left side or the right side of the host vehicle.
In this case, a direction determination unit is configured by the imaging device and the rear side notification ECU 34.

The direction indicating switch 14 is turned on when a driver operates a direction indicating lever (not shown) to the left or right. When the direction indicator switch 14 is turned on to the left or right side, the left or right direction indicator lamp is activated.
In the present embodiment, when the direction indicating switch 14 is turned on to the left side or the right side, a detection signal indicating that fact is supplied to the rear side notification ECU 34.
Therefore, the direction indicating switch 14 functions as a lane change intention means that is operated when the host vehicle changes lanes.

When the notification function switch 16 is operated to be turned on or off, the notification function switch 16 indicates that the driving support device 10 indicates that the adjacent vehicle approaches from the rear side of the host vehicle. It is a switch for setting the function to notify according to a change in state to be valid or invalid.
The on / off state of the notification function switch 16 is detected by the rear side notification ECU 34.

The rainfall sensor 18 detects the rainfall during rainy weather and supplies detection information indicating the detection result to the rear side notification ECU 34. Therefore, the rainfall sensor 18 functions as a rain detection unit that detects the rainfall.
The vehicle speed sensor 20 detects the traveling speed of the host vehicle, and supplies detection information indicating the detection result to the rear side notification ECU 34. Therefore, the vehicle speed sensor 20 functions as vehicle speed detection means for detecting the vehicle speed.

The notification lamp 22 is incorporated in the instrument panel of the host vehicle, and notifies the approaching vehicle from the rear side by turning on (or flashing) based on a command from the rear side notification ECU 34. .
Instead of the notification lamp 22, an icon having a specific shape or a display that displays a specific character string may be used.
The notification buzzer 24 is incorporated at an appropriate location in the passenger compartment of the host vehicle, and sounds an approaching vehicle from the rear side by ringing at a predetermined tone and time based on a command from the rear side notification ECU 34. It is to inform.

The side mirror indicator 26 is incorporated in each of the left and right side mirrors, and notifies the approaching vehicle from the rear side by turning on (or flashing) based on a command from the rear side notification ECU 34. .
In addition, the side mirror indicator 26 of the left and right side mirrors can notify whether the approaching vehicle is approaching from the left or right side of the rear side of the host vehicle by selectively lighting one of them. It is like that. Such a side mirror display 26 is known.

The window drive unit 28 opens and closes the left window 30 and the right window 32 based on a command from the body system ECU 36. Further, the open / closed state of the left window 30 and the right window 32, that is, the opening degree is detected, and information on the opening degree is supplied to the body system ECU 36.
In the present embodiment, the window drive unit 28 is configured to change the opening degree of the left window 30 and the right window 32 from fully closed to fully open based on a command from the body system ECU 36.
Therefore, the window drive unit 28 functions as a window opening / closing means for opening / closing the window of the host vehicle.
The left window 30 and the right window 32 may be a front seat window or a rear seat window.
When the left and right windows in the front seat are opened and closed, the distance between the driver and the window is short, so that the driver can easily notice the opening and closing operation of the window, which is advantageous in prompting attention.
On the other hand, when the left and right windows of the rear seat are opened and closed, the window that opens and closes is located behind the driver, so the driver pays attention to the rear side when the window opens and closes. Since it is easy, it is advantageous in calling attention to the rear side.

The rear side notification ECU 34 uses the determination information from the rear side radar 12, the detection information from the direction indicating switch 14, the on / off state of the notification function switch 16, and the window opening information from the window drive unit 28. Based on this, a command for instructing the execution of the notification operation is given to the body system ECU 36.
The body system ECU 36 is connected to various actuators or various sensors including the notification lamp 22, the notification buzzer 24, the side mirror display 26, and the window drive unit 28, and controls them.
In the present embodiment, the body system ECU 36 receives the instruction for instructing the execution of the notification operation from the rear side notification ECU 34, thereby causing the notification lamp 22, the notification buzzer 24, the side mirror display 26, and the window drive unit 28 to be displayed. Make it work.
The rear side notification ECU 34 and the body system ECU 36 are each composed of a CPU, a ROM for storing and storing a control program, a RAM as an operation area of the control program, an EEPROM for holding various data in a rewritable manner, a peripheral circuit, and the like. It includes an interface unit that takes the interface.
Further, the rear side notification ECU 34 and the body system ECU 36 are configured to exchange information via a bus such as CAN.
In the present embodiment, the rear side notification ECU 34 and the body system ECU 36 allow the driver to recognize the state of the window on the side closer to the approaching vehicle among the windows of the own vehicle based on the determination result of the direction determination means. It functions as a control means that changes in various forms.
In the present embodiment, a case where two ECUs of rear side notification ECU 34 and body system ECU 36 that are separately configured are used will be described. However, instead of using these two ECUs, a single ECU is used. Of course, it may be used.

Next, the operation of the driving support device 10 will be described with reference to the flowchart of FIG.
When the driving support device 10 is activated, the process of FIG. 2 is repeatedly executed.
First, the rear side notification ECU 34 determines whether or not determination information has been received from the rear side radar 12, that is, whether or not there is an approaching vehicle from the rear side of the host vehicle (step S10).
If step S10 is negative, the process returns to step S10.
If step S10 is affirmative, the rear side notification ECU 34 determines whether or not there is an intention to change lanes based on the operating state of the direction indicating switch 14 (step S12).
If step S12 is negative (if there is no intention to change lanes), the rear side notification ECU 34 turns on the notification lamp 22 and the side mirror indicator 26 so that a nearby vehicle is approaching from the rear of the host vehicle. Is notified to the driver (step S14), and the process is terminated.
If step S12 is affirmative (if there is an intention to change lanes), the rear side notification ECU 34 determines the approaching direction of the approaching vehicle specified based on the determination information (whether approaching from the left side of the host vehicle, The approaching vehicle side window is identified based on whether the approaching vehicle is approaching from the right side, and the current window opening information of the identified side is acquired from the window drive unit 28 via the body ECU 36, and the like. (Step S16).

Next, the rear side notification ECU 34 sets the opening of the window (step S18).
If it demonstrates concretely, the opening degree setting of a window will illustrate two types of procedures as shown below.
1) The rear side notification ECU 34 acquires the detection result of the rainfall from the rainfall sensor 18, reads the opening from the rain based on the opening setting map in which the rainfall and the opening are associated, and sets the opening.
The opening degree setting map is configured such that the opening degree of the window decreases as the detected rainfall amount increases.
In this case, since the opening degree is reduced as the amount of rain increases, intrusion of rain into the vehicle compartment can be suppressed when the amount of rain is large.
Further, when the amount of rain is extremely large, the window opening may be set to zero to prevent rain from entering the vehicle interior.
2) The rear side notification ECU 34 acquires the detection result of the vehicle speed from the vehicle speed sensor 20, reads the opening degree from the vehicle speed based on a map in which the vehicle speed and the opening degree are associated, and sets the opening degree.
The opening setting map is configured such that the opening degree of the window decreases as the detected vehicle speed increases.
In this case, since the opening degree is reduced as the vehicle speed increases, it is possible to suppress the amount of wind and wind noise that blows into the passenger compartment when the vehicle speed is high, such as when traveling on an expressway.
The opening degree of the window may be a fixed value, but if 1) and 2) are performed, the influence of the window operation on the environment in the vehicle compartment can be suppressed.

Next, the rear side notification ECU 34 determines whether or not the current open / close state of the window is a fully closed state (step S20).
If step S20 is affirmative (if the window is fully closed), the rear side notification ECU 34 opens the window on the approaching vehicle side at the set opening degree via the body system ECU 36 and the window drive unit 28. The window on the approaching vehicle side is thereby opened with the set opening (step S22).
Thus, the driver is notified of the presence of the approaching vehicle and the approaching direction of the approaching vehicle by opening the approaching vehicle side window at the set opening.
Simultaneously with the operation of step S22, the rear side notification ECU 34 notifies the presence of the approaching vehicle by sounding the notification buzzer 24 via the body system ECU 36 (step S24).
Next, the rear side notification ECU 34 determines whether there is no approaching vehicle based on the determination information from the rear side radar 12 (step S26).
If step S26 is negative, the process returns to step S22.
If step S26 is positive, the window drive unit 28 is controlled so that the opened window returns to the open / close state of the window stored in the storage means in step S16 (step S28), and the notification buzzer 24 is stopped (step S26). S30), the process is terminated.

On the other hand, if step S20 is negative (if the window is not fully closed), the rear side notifying ECU 34 passes the body ECU 36 so as to raise and lower the approaching vehicle side window within the set opening range. Then, a command is given to the window drive unit 28, whereby the window on the approaching vehicle side is raised or lowered within the set opening range (step S32).
Thus, the driver is notified of the presence of the approaching vehicle and the direction in which the approaching vehicle is approaching by raising and lowering the window on the approaching vehicle side within the set opening range.
Simultaneously with the operation of step S28, the rear side notification ECU 34 notifies the presence of the approaching vehicle by sounding the notification buzzer 24 via the body system ECU 36 (step S34).
Next, the rear side notification ECU 34 determines whether there is no approaching vehicle based on the determination information from the rear side radar 12 (step S36).
If step S30 is negative, the process returns to step S28.
If step S30 is affirmative, the window drive unit 28 is controlled so that the raised / lowered window returns to the opened / closed state of the window stored in the storage means in step S16 (step S28), and the notification buzzer 24 is stopped (step S28). S30), the process is terminated.

In the present embodiment, as a form of changing the opening of the window, when the window is opened to the set opening (step S22) and when the window is raised and lowered within the set opening (step S32). ).
However, in short, it is only necessary to change the opening of the window so that the driver can recognize it, and the form of changing the opening of the window is arbitrary, and is not limited to the two types exemplified in the embodiment. Absent.
Moreover, in this Embodiment, when it determined with the intention of a lane change, it demonstrated as what does not perform alerting | reporting operation | movement by the alert lamp 22 and the side mirror display 26. FIG. However, when there is an intention to change the lane, in addition to the change in the opening of the window and the sounding of the notification buzzer 24, a notification operation by the notification lamp 22 and the side mirror display 26 may be performed.

As described above, according to the present embodiment, it is determined whether the approaching vehicle is approaching from the left or right side of the rear side of the host vehicle, and the approaching vehicle approaches from the window of the host vehicle based on the determination result. The state of the window on the running side is changed in a form that the driver can recognize.
Therefore, it is possible to accurately notify the driver whether there is an approaching vehicle from the rear side and whether the approaching vehicle is approaching from the left or right side of the rear side of the host vehicle.
In the present embodiment, the window state is changed by changing the opening degree of the window. Therefore, the movement of the window occurs, which is advantageous in prompting the driver to be alerted.
Further, when a wind noise is generated by opening a window while the host vehicle is traveling, it is advantageous for prompting the driver to be alerted by the wind noise in addition to the movement of the window.

Further, in the present embodiment, when the direction indicating switch 14 is operated, a change in the opening of the window (change in the state of the window) is permitted, but the direction indicating switch 14 is not operated. However, a change in the opening of the window may be permitted.
However, if the change of the opening of the window is permitted even when the direction indicating switch 14 is not operated, a situation in which approaching vehicles from the rear side are frequently determined, such as a congested road, for example. Then, even if there is no intention to change lanes, changes in the opening of the window frequently occur and become annoying.
On the other hand, as in this embodiment, when there is an intention to change lanes, and therefore there is a high need to notify an approaching vehicle from the rear side, a change in the opening of the window is permitted. Then, the window opening degree is reliably changed in a situation where the necessity of notification is high, and the window opening degree does not change in a situation where the necessity of notification is not so high.
Therefore, when the need for notification is high while avoiding bothersomeness, it is possible to accurately notify the approaching vehicle from the rear side.

(Second Embodiment)
Next, a second embodiment will be described.
In the first embodiment, the case where the change in the window state is made by changing the opening of the window has been described, but in the second embodiment, the change in the window state is caused by the visible light in the window. This is done by changing the transmittance.
In the following embodiments, the same or the same parts and members as those in the first embodiment will be denoted by the same reference numerals, and description thereof will be omitted or simply described.

FIG. 3 is a block diagram showing a configuration of the driving support apparatus 10 according to the second embodiment.
As shown in FIG. 3, a window transmittance adjusting unit 38 is provided in place of the window driving unit 28 of FIG.
A light control film is attached to the left window 30 and the right window 32.
The light control film has a visible light transmittance that varies depending on the voltage applied by the window transmittance adjusting unit 38. As the light control film, various conventionally known methods such as a liquid crystal method and an electrochromic method can be used.

The window transmittance adjusting unit 38 changes the transmittance of the light control films pasted on the left window 30 and the right window 32 based on a command from the body system ECU 36, thereby changing the left window 30 and the right window 32. The transmittance is changed.
Further, the window transmittance adjusting unit 38 supplies the transmittance information of the left window 30 and the right window 32 to the body system ECU 36.
In the present embodiment, the window transmittance adjusting unit 38 continuously or stepwise changes the transmittance of the left window 30 and the right window 32 from the minimum value to the maximum value based on a command from the body system ECU 36. It is configured to change.
Therefore, the window drive unit 28 functions as a transmittance adjusting unit that changes the transmittance of visible light that passes through the window of the host vehicle.
In the present embodiment, the left window 30 and the right window 32 for changing the transmittance are rear seat windows.

Next, the operation of the driving support device 10 will be described with reference to the flowchart of FIG.
When the driving support device 10 is activated, the process of FIG. 4 is repeatedly executed.
Note that steps S110, S112, and S114 in FIG. 4 are the same as steps S10, S12, and S14 in FIG.
If step S112 is affirmative (if there is an intention to change lanes), the rear side notification ECU 34 determines the approach direction of the approaching vehicle specified based on the determination information (whether approaching from the left side of the host vehicle, The approaching vehicle side window is identified based on whether the approaching vehicle is approaching from the right side, and the current window transmittance of the identified side is obtained from the window transmittance adjustment unit 38 via the body ECU 36 and the RAM. Or the like (step S116).
Next, the rear side notification ECU 34 determines whether or not the current window transmittance α is equal to or less than the reference value β (step S118).
If step S118 is affirmative (if transmittance α ≦ reference value β), the rear side notification ECU 34 notifies the window transmittance adjustment unit 38 via the body system ECU 36 so that the transmittance α becomes the maximum value. A command is given, and thereby the transmittance α of the approaching vehicle side window becomes the maximum value (step S120).
Thus, when the transmittance α of the window on the approaching vehicle side becomes the maximum value, the driver is notified of the presence of the approaching vehicle and the direction in which the approaching vehicle approaches.
Simultaneously with the operation of step S120, the rear side notification ECU 34 notifies the presence of an approaching vehicle by sounding the notification buzzer 24 via the body system ECU 36 (step S122).
Next, the rear side notification ECU 34 determines whether there is no approaching vehicle based on the determination information from the rear side radar 12 (step S124).
If step S124 is negative, the process returns to step S120.
If step S124 is positive, the window transmittance adjusting unit 38 is controlled so that the window having the maximum transmittance α returns to the window transmittance α stored in the storage means in step S116 (step S126). The notification buzzer 24 is stopped (step S128), and the process is terminated.

If step S118 is negative (transmittance α> reference value β), the rear side notification ECU 34 increases and decreases the transmittance α of the approaching vehicle side window within a predetermined range. A command is given to the window transmittance adjusting unit 38 via the ECU 36, whereby the transmittance α of the approaching vehicle side window is raised or lowered within the set transmittance range (step S130).
Thus, the driver is notified of the presence of the approaching vehicle and the approaching direction of the approaching vehicle by raising and lowering the transmittance α of the window on the approaching vehicle side within the set transmittance range.
Simultaneously with the operation of step S130, the rear side notification ECU 34 notifies the presence of the approaching vehicle by sounding the notification buzzer 24 via the body system ECU 36 (step S132).
Next, the rear side notification ECU 34 determines whether there is no approaching vehicle based on the determination information from the rear side radar 12 (step S134).
If step S134 is negative, the process returns to step S130.
If step S134 is affirmative, the window transmittance adjusting unit 38 is controlled so that the window whose transmittance α has been raised or lowered returns to the open / closed state of the window stored in the storage means in step S16 (step S126), and the notification buzzer. 24 is stopped (step S128), and the process is terminated.

In the second embodiment, as a mode of changing the window transmittance α, when the window transmittance α is set to the maximum value (step S120), the window transmittance α is set to the set transmittance. Two types of cases of raising and lowering in the range (step S130) are illustrated.
However, in short, it is only necessary to change the transmittance α of the window so that the driver can recognize it, and the form of changing the transmittance α of the window is arbitrary, and is limited to the two types exemplified in the embodiment. It is not a thing.
In the second embodiment, the case where the transmittance α changes continuously or stepwise from the minimum value to the maximum value has been described, but the transmittance α is either the minimum value or the maximum value. Of course, the present invention can be applied even when it is selectively switched.
In this case, for example, there are two possible forms for changing the window transmittance α.
1) Raise and lower the window transmittance α between the minimum value and the maximum value.
2) If the window transmittance α is the minimum value, change it to the maximum value, and if the window transmittance α is the maximum value, change it to the minimum value.

  Also, in the second embodiment, similarly to the first embodiment, when it is determined that there is an intention to change lanes, the notification operation by the notification lamp 22 and the side mirror display 26 is not performed. explained. However, when there is an intention to change the lane, in addition to the change in the transmittance α of the window and the sounding of the notification buzzer 24, a notification operation by the notification lamp 22 and the side mirror display 26 may be performed.

As described above, also in the second embodiment, as in the first embodiment, based on the determination result of whether the approaching vehicle is approaching from the left or right of the rear side of the own vehicle, The state of the window on the side where the approaching vehicle is approaching is changed in a form that the driver can recognize.
Therefore, it is possible to accurately notify the driver whether there is an approaching vehicle from the rear side and whether the approaching vehicle is approaching from the left or right side of the rear side of the host vehicle.
Further, in the present embodiment, since the change of the window state is made by changing the transmittance α of the window, the brightness of the passenger compartment changes, which is advantageous in prompting the driver to be alerted. .

Further, in the second embodiment, when the direction indicating switch 14 is operated, a change in the window transmittance α (a change in the window state) is permitted. Even if no operation is performed, a change in the transmittance α of the window may be permitted.
However, if the change in the transmittance α of the window is permitted even if the direction indicating switch 14 is not operated, an approaching vehicle from the rear side is frequently determined, such as a traffic jam road. In the situation, even if there is no intention to change lanes, a change in the transmittance α of the window occurs frequently and becomes annoying.
On the other hand, as in the second embodiment, when there is a willingness to change lanes, and therefore there is a high need to notify the approaching vehicle from the rear side, the change in the transmittance α of the window is permitted. As a result, the window transmittance α is reliably changed in a situation where the necessity of notification is high, and the window transmittance α is not changed in a situation where the necessity of notification is not so high.
Therefore, when the need for notification is high while avoiding bothersomeness, it is possible to accurately notify the approaching vehicle from the rear side.

  DESCRIPTION OF SYMBOLS 10 ... Driving assistance device, 12 ... Rear side radar, 14 ... Direction indication switch, 16 ... Notification function switch, 18 ... Rainfall sensor, 20 ... Vehicle speed sensor, 22 ... Notification lamp, 24 ... ... Notification buzzer, 26... Side mirror indicator, 28... Window drive unit, 30. Window transmittance adjustment unit.

Claims (6)

A driving support device that notifies the driver that the approaching vehicle is approaching based on the detection result of the approaching vehicle from the rear side of the host vehicle,
Direction determining means for determining whether the approaching vehicle is approaching from the left or right side of the rear side of the host vehicle;
Control means for changing the state of the window on the side where the approaching vehicle is approaching among the windows of the host vehicle based on the determination result of the direction determination means in a form that the driver can recognize,
A driving support apparatus comprising: A window opening and closing means for opening and closing the window of the host vehicle is provided;
The change of the state of the window is made by changing the opening degree of the window by the control means controlling the window opening and closing means,
The driving support apparatus according to claim 1. Rain detection means for detecting rainfall is provided,
The control means controls the window opening and closing means so that the opening degree of the window becomes smaller as the detected rainfall is larger,
The driving support apparatus according to claim 2, wherein: Vehicle speed detecting means for detecting the vehicle speed is provided;
The control means controls the window opening and closing means so that the opening degree of the window decreases as the detected vehicle speed increases.
The driving support apparatus according to claim 2 or 3, wherein A transmittance adjusting means for changing the transmittance of visible light transmitted through the window of the host vehicle is provided;
The change of the state of the window is made by changing the transmittance of the window by the control means controlling the transmittance adjusting means.
The driving support apparatus according to claim 1. A lane change intention means that is operated when the host vehicle changes lanes is provided,
The change in the state of the window by the control means is permitted when the lane change intention means is operated,
The driving support device according to any one of claims 1 to 5, wherein

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