JP2016197311A - Drive support display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display a warning notice for another vehicle being present on the rear lateral side so that a driver can intuitively understand in the state in which the driver almost gazes at the front.SOLUTION: A pair of right and left index marks 20R and 20L are displayed on a windshield 1 in the vicinity of front pillars 6R and 6L. When another vehicle is present on the left rear lateral side, a bar display 10LR is displayed so as to extend from the index mark 20L upward. When another vehicle is present on the right rear lateral side, a bar display 10RR is displayed so as to extend from the index mark 20R upward. The higher a risk degree of another vehicle is, the longer the length of the bar display is. A warning notice can be also displayed for another vehicle being present on the front lateral side (a bar display 10LF for another vehicle on the left front lateral side is displayed so as to extend from the index mark 20L downward and a bar display 10RF for another vehicle on the right front lateral side is displayed so as to extend from the index mark 20R downward).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a driving assistance display device that provides assistance information for merging or changing lanes.

  When merging or changing lanes, it is necessary to pay sufficient attention to other vehicles located on the rear side existing in the merging direction or lane changing direction. Patent Document 1 discloses a display that highlights other vehicles that should be most carefully noted when joining, and displays a joining space. Patent Document 2 discloses a vehicle speed instruction for the host vehicle and other vehicles so that the vehicles can safely join. Japanese Patent Application Laid-Open No. H10-228561 discloses a vehicle that displays a rear vehicle on a rear window glass. Patent Document 4 discloses that a safe inter-vehicle distance with respect to a preceding vehicle is indicated by a bar length in a bar display.

JP 2007-304992 A JP 2012-83959 A Japanese Patent No. 5160564 JP 2014-203122 A

It is common to watch the other side of the vehicle in the direction of merging or changing lanes while checking the movement of the other vehicle while looking at the side mirror, for example. It is necessary to keep an eye on the time, and the burden on the driver becomes large.
For this reason, displaying an icon indicating the presence of the other vehicle on the rear side on the mirror surface of a side mirror configured as a display has also been put into practical use. Although the burden on the driver is considerably reduced by displaying such an icon, it is more preferable if alert information regarding the other vehicle on the rear side can be provided more intuitively. In particular, it is desired that confirmation of the alert information provided can be performed in a state in which the driver looks closely at the front as much as possible without looking back or turning his face to the side.

  The present invention has been made in view of the circumstances as described above, and its purpose is to display an alert regarding the other vehicle on the rear side so that the driver can intuitively understand the vehicle while looking closely at the front. An object of the present invention is to provide a driving support display device that is configured to do so.

In order to achieve the above object, the following solution is adopted in the present invention. That is, as described in claim 1,
Display means for performing a rear support display on the windshield indicating that there is another vehicle behind the host vehicle is provided,
The rear support display is a bar display extending in the vertical direction, and the rear bar display becomes longer as the degree of danger to other vehicles is higher.
It is like that. According to the above solution, the bar is displayed on the front window glass, so that the driver can immediately know that there is another vehicle on the rear side while keeping a close eye on the front. In addition, the driver can immediately know the degree of danger of the other vehicle on the rear side simply by checking the length of the bar display. In particular, it is not necessary to turn the face largely to the side to visually recognize the bar display, which is extremely preferable in reducing the driver's burden.

A preferred mode based on the above solution is as described in claim 2 and the following claims. That is,
The rear support display is divided into two types: a left rear support display that is displayed on the left side for the other vehicle on the left side, and a right rear support display that is displayed on the right side and is for the other vehicle on the right side. (Corresponding to claim 2). In this case, it can be set as the support display which can acquire the effect corresponding to Claim 1 about the other vehicle of the rear side of both right and left sides, respectively.

  When the other vehicle on the rear side approaches the own vehicle from the left-right direction, the rear support display is inclined and displayed so as to go outward in the vehicle width direction. (Claim 3). In this case, it is possible to immediately know that the other vehicle on the rear side approaches the host vehicle from an oblique direction only by visually observing the bar display.

The left rear support display is displayed along the left front pillar in the vicinity of the left front pillar,
The right rear support display is displayed along the right front pillar in the vicinity of the right front pillar.
(Corresponding to claim 4). In this case, it is preferable to clearly identify the support display for the other vehicle on the rear side in the left or right direction. In addition, it is preferable for the driver to immediately recognize that the bar is displayed by displaying the bar near the front pillar where the driver frequently enters the field of view and the position is always clearly recognized by the driver. It will be a thing.

  The display means is configured to be a head-up display that performs display at a position in front of the driver's seat on the front window glass (corresponding to claim 5). In this case, it is extremely preferable for the driver to recognize the bar display with the driver looking straight ahead.

The display means is further configured to display a pair of left and right front support displays on the front window glass indicating that another vehicle exists on the left and right front sides of the host vehicle,
The front support display is a bar display extending in the vertical direction, and the front bar display is made longer as the degree of danger to other vehicles is higher,
The front support display is displayed below the rear support display.
(Corresponding to claim 6). In this case, the support display for the left and right front side other vehicles can be provided in the same manner as the rear side view of the other vehicle. In addition, the driver understands that the one located below the front window glass is in the front (far) when viewing the front through the front window glass. By displaying the support display at the upper position and the other vehicle on the front side at the lower position, the driver can intuitively recognize which direction is the support display for the other vehicle in the front-rear direction.

The display means is configured to display a pair of left and right indicators indicating the position of the host vehicle in a substantially middle part in the vertical direction of the front window glass.
The rear support display is displayed to extend upward from the indicator,
The front support display is displayed so as to extend downward from the indicator.
(Corresponding to claim 7). In this case, the driver can more clearly recognize whether the support display is for the other vehicle before or after, using the index as a reference (boundary).

  When the other vehicle on the front side approaches the host vehicle from the left-right direction, the front support display is displayed so as to be inclined toward the outside in the vehicle width direction as it goes downward ( Claim 8). In this case, the driver can immediately know that the other vehicle on the front side approaches the host vehicle from an oblique direction simply by looking at the bar display.

  The bar display is performed by a frame line so that the inside of the frame line can be seen through (corresponding to claim 9). In this case, it is preferable to prevent a situation in which the field of view is hindered by the bar display while the bar display is clearly recognized by the display in the frame line format.

  According to the present invention, it is possible to display an alert regarding the other vehicle on the rear side so that the driver can intuitively understand the vehicle while looking closely at the front.

Explanatory drawing which shows the state which is displaying the information regarding the other vehicle which exists in the front and back sides. Explanatory drawing which shows a state when the other vehicle which exists in the front and back sides approaches the own vehicle from the diagonal direction. The principal part sectional drawing which shows an example of the display film formed in front window glass. Explanatory drawing which shows the state which is displaying the information regarding the other vehicle which exists in the front and back sides with a head-up display. The figure which shows the example of a control system of this invention in a block diagram. The flowchart which shows the example of control of this invention.

  FIG. 1 is a view of the front window glass portion as viewed from the passenger compartment. In FIG. 1, 1 is a front window glass, 2 is an instrument panel, 3 is a steering handle, 4L and 4R are left and right front side doors, and 5L and 5R are left and right side mirrors. As is well known, the front window glass 1 is inclined so as to be located rearward as it goes upward (in many cases, it is inclined upward to 30 degrees to 40 degrees with respect to the horizontal).

  As is well known, the front window glass 1 has a lower edge connected to the instrument panel 2, a left and right edge connected to the left and right front pillars 6 </ b> L and 6 </ b> R, and an upper edge connected to the roof 7. . In FIG. 1, 8 is a rearview mirror.

  The front window glass 1 displays information relating to other vehicles located on the side of the host vehicle. In the embodiment, the other vehicles to be displayed are the left and right rear side other vehicles and the left and right front side other vehicles. These other vehicles are intended to be located within a predetermined distance range from the own vehicle, and when there are a plurality of other vehicles in the same direction, the other vehicle closest to the own vehicle is to be displayed.

  The display regarding other vehicles is as follows. First, the display 10LR relates to the other vehicle on the left rear side. The display 10RR relates to the other vehicle on the right rear side. The display 10LF relates to the other vehicle on the left front side. The display 10RF relates to the other vehicle on the left front side. In addition, when it is not necessary to distinguish each said display, it shall show only by the code | symbol 10. In FIG.

  The left-side bar displays 10LR and 10LF are displayed in a bar format extending in the vertical direction so as to substantially follow the left front pillar 6L. That is, the displays 10LR and 10LF are bar displays formed by elongated rectangular frame lines extending in the vertical direction, and the inside of the frame lines can be seen through, and is set so as not to disturb the view.

  The right displays 10RR and 10RF are displayed in a bar format extending in the vertical direction so as to substantially follow the right front pillar 6R. That is, the displays 10RR and 10RF are bar displays formed by elongated rectangular frame lines extending in the vertical direction, and the inside of the frame lines can be seen through, and is set so as not to disturb the view. In the following description, the bar-type displays 10LR, 10LF, 10RR, and 10RF may be expressed as bar displays.

  On the front window glass 1, a pair of left and right indicators 20L and 20R are displayed in the vicinity of the front pillars 6L and 6R and in a substantially middle portion in the vertical direction. The indicators 20L and 20R are, for example, narrow rectangular shapes that extend short in the left-right direction, and the left-right width is set slightly larger than the left-right width of the bar display 10 (10LR, 10LF, 10RR, 10RF). It is clearly distinguished from the display 10.

  The bar display 10LR that provides information about the other vehicle on the left rear side extends upward from the index 20L. Similarly, the bar display 10RR that provides information about the other vehicle on the right rear side extends upward from the index 20R.

  A bar display 10LF that provides information about the other vehicle on the left front side extends downward from the index 20L. Similarly, the bar display 10RF that provides information about the other vehicle on the right front side extends downward from the index 20R.

  As described above, the other vehicle on the rear side is displayed on the upper side, while the other vehicle on the front side is displayed on the lower side, so that the driver can intuitively distinguish between the front and the rear. That is, when the driver views the front through the front window glass 1, the front (distant) scenery is located below, so that the front is the lower side and the rear is the upper side. Since the driver has a sense of being, the display form matches the sense of the driver.

  The bar display 10 is displayed when there is another vehicle within a predetermined distance range in the front-rear direction from the host vehicle. And the bar display 10 is lengthened, so that the danger with respect to the own vehicle of another vehicle is high. For example, when the presence of another vehicle is detected, the bar display 10 is displayed short (for example, display with a length of 5 to 7 cm), and when it is determined that the degree of danger is high, the display is long (for example, 15 cm). Display in length). Of course, the length of the bar display 10 corresponding to the degree of danger can be changed to a three-step or more step type, or can be changed to a continuously variable type. However, in order to make the display as simple as possible, it is possible to make two types, a short display indicating existence and a long display indicating danger, and change the length to a maximum of about three types. It is preferable to leave.

  The determination of the risk level of the other vehicle with respect to the host vehicle is, for example, determined that the risk level is higher as the inter-vehicle distance is smaller, or the risk level is higher as the approach speed of the other vehicle to the host vehicle is higher. be able to. Of course, the degree of risk can be determined by an appropriate method, such as determining the degree of risk based on both the inter-vehicle distance and the relative speed in the approach direction.

  FIG. 2 shows a second embodiment of the present invention. The same components as those in the above-described embodiment are denoted by the same reference numerals, and redundant description thereof is omitted. In the present embodiment, the display mode is preferable when the other vehicle approaches the host vehicle (the lane in which the vehicle is traveling) from an oblique direction. That is, for example, when the host vehicle is traveling on a highway, the display mode is preferable when another vehicle merges from the merge lane to the highway.

  In FIG. 2, when the other vehicles on the left and right rear sides approach the host vehicle from an oblique direction, the bar display 10LR or 10RR is inclined so as to be gradually positioned on the outer side in the vehicle width direction. Displayed. Further, when the other vehicles on the left and right front sides approach the host vehicle from an oblique direction, the bar display 10LF or 10RF is displayed so as to be gradually inclined to the outside in the vehicle width direction as it goes downward. The With such an inclination display, the driver can intuitively understand that another vehicle approaches from an oblique direction.

  The driver can intuitively and immediately understand that there is another vehicle on the side by visually observing each bar display 10LR, 10RR, 10LF or 10RF described above. In particular, since the bar display 10 is performed on the front window glass 1, the bar displays 10LR and 10LF on the side far from the driver in the vehicle width direction can be visually recognized by slightly shifting the line of sight. In other words, it is possible to know the presence of other vehicles on the side without having to turn the face largely to the side to check the side mirror, or look back and look back. Further, the length of the bar display 10 makes it possible to intuitively know the degree of danger of other vehicles.

  By forming the bar display 10 with a frame line, the bar display 10 is easily visually recognized by the driver. And since the inside of this frame line can be seen through, the problem that the visual field is largely hindered by the bar display 10 does not occur at all.

  FIG. 3 shows an example of a display 30 for performing the display as shown in FIG. 1 or 2 on the front window glass 1. The display 30 can be configured by, for example, a liquid crystal display as a display film. Of course, the display 30 has a shape that is elongated in the vertical direction so that the display shown in FIG. 1 is performed. In FIG. 3, the display 30 for displaying the right bar displays 10RR and 10RF is shown, but the display for displaying the left bar displays 10LR and 10LF is configured in the same manner.

  First, the right front pillar 6 </ b> R is formed in a closed cross-sectional shape by the inner panel 41 and the outer panel 42, and is reinforced by the reinforcement 43. An inner trim material 44 is disposed on the inner surface side of the inner panel 41. One end of a connection cord 31 is connected to a thin film display 30 attached to the front window glass 1. The other end of the connection cord 31 extends into a space between the inner panel 41 and the trim member 44, and in the space, the connection cord 32 extends from a display drive control means (not shown). The connection is made using the connector 33.

  FIG. 4 shows a third embodiment of the present invention, in which the left and right bar displays 10LR, 10LF, 10RR, and 10RF are placed on the front window glass 1 in front of the driver (that is, the steering handle 3). It is supposed to be displayed. Specifically, a head-up display HUD is provided, and a virtual image for visual recognition to the driver is displayed at a predetermined distance in front of the windshield 1 (for example, about 2.0 m to 2.5 m) at a position immediately before the driver. It is supposed to be displayed. A display area by the head-up display HUD is denoted by reference numeral 51. In this display area 51, left and right bar displays 10LR, 10LF, 10RR, 10RF and indices 20L, 20R are appropriately displayed. In this embodiment, it is preferable to make the line-of-sight movement very small when the driver tries to visually recognize the alert display.

  FIG. 5 shows an example of a control system configured in the host vehicle for controlling the support display for performing the bar display and the index display described above, and corresponds to the embodiment shown in FIG. 1, FIG. 2 and FIG. It has become. In FIG. 5, U is a controller (control unit) configured using a microcomputer. The controller U receives signals from various sensors S1 to S5. S1 is a radar that is disposed on the left and right sides of the host vehicle and detects surrounding objects (other vehicles), and is for detecting other vehicles on the rear side of the left and right sides. A camera may be used in place of the radar (particularly a stereo camera), or surrounding objects may be detected by both the radar and the camera.

  S2 is a navigation device including a GPS antenna, and is used for acquiring map information and position information. S3 is a vehicle speed sensor that detects the vehicle speed. S4 is an on / off switch that is manually operated. On the premise that this switch S4 is on, the above-described support display of bar display and index display is performed (switch S4 is off). When there is no support display). S5 is a wireless communication means, and is used for vehicle-to-vehicle communication with other vehicles and information exchange with an external information center. For example, when the radar S1 cannot detect the other vehicle on the rear side (for example, when there is a trap between the other vehicle), the vehicle-to-vehicle communication (direct communication with the other vehicle may be used. It may be used to obtain information on other vehicles by indirect communication via the information center of the other).

  The controller U performs support information display control and alarm buzzer S10 control. The buzzer S10 is activated when the degree of danger is particularly high, but the buzzer S10 may be omitted.

  Next, an example of control of support display by the controller U will be described with reference to the flowchart of FIG. The control in FIG. 6 is executed on the assumption that the switch S4 is turned on, and Q indicates a step in the following description. First, in Q1, signals from the sensors S1 to S5 are input. Thereafter, in Q2, it is determined whether or not another vehicle is present on either the front, rear, left or right side (determination using radar S1 or inter-vehicle communication). When the determination in Q2 is YES, in Q3, information on other vehicles, particularly information on the position and vehicle speed, is obtained ((information on the traveling direction may be further obtained), and then Q4. The degree of risk is determined based on the information on the other vehicle obtained in Q3 and the information on the own vehicle (particularly information on the position and vehicle speed), for example, the distance between the vehicle and the other vehicle. The determination can be made based on one or both of the relative speed degrees in the approach direction, and in addition to this, the determination can be made in consideration of the traveling direction of the other vehicle relative to the host vehicle.

  After Q4, at Q5, the bar display position (10LR, 10LF, 10RR, or 10RF is set depending on the position where another vehicle is present) and the length corresponding to the degree of danger are determined. The Thereafter, the display of the bar display 10 is executed in Q6 (the indicator display is also performed).

  When the determination in Q2 is NO, the bar display 10 and the indicators 20L and 20R are not displayed in Q7. Note that the control shown in FIG. 6 is performed for other vehicles in the four directions of the left rear side other vehicle, the right rear side other vehicle, the left front side other vehicle, and the right front side other vehicle. It is done individually. The indicator 20L is displayed when at least one of the left bar displays 10LR and 10LF is displayed, but can be displayed only when both the bar displays 10LR and 10LF are displayed together. Similarly, the indicator 20R is displayed when at least one of the right bar displays 10RR and 10RF is displayed, but can be displayed only when both the bar displays 10RR and 10RF are displayed together.

  Although the embodiments have been described above, the present invention is not limited to the embodiments, and appropriate modifications can be made within the scope of the claims. Only the display about the other vehicle on the rear side may be performed (there is no display of the support on the other vehicle on the front side). Only one of the left and right other vehicles on the rear side may be supported and displayed (in this case, it is particularly preferable to display the assistance on the other vehicle on the rear side of the driver's seat). The danger level can be displayed by, for example, blinking the bar display, color-coding the bar display, or changing the thickness (width) of the bar display. The shapes of the indicators 20L and 20R can be selected as appropriate, and the indicators 20L20R can be not displayed (in this case, it is preferable to display the front and rear bar displays with a space in the vertical direction on both the left and right sides). Of course, the object of the present invention is not limited to what is explicitly stated, but also implicitly includes providing what is substantially preferred or expressed as an advantage.

  The present invention is preferable in terms of improving safety at the time of merging or lane change.

U: Controller (for display control)
S1: Radar (for other vehicle detection)
HUD: Head-up display 1: Front window glass 3: Steering handle 6L: Front pillar (left side)
6R: Front pillar (right side)
10LR: Bar display (for other vehicles on the left rear side)
10LF: Bar display (for other vehicles on the left front side)
10RR: Bar display (for other vehicles on the right rear side)
10RF: Bar display (for other vehicles on the right front side)
20L: Indicator (for left side)
20R: Indicator (for right side)
30: Display (display film)

Claims (9)

Display means for performing a rear support display on the windshield indicating that there is another vehicle behind the host vehicle is provided,
The rear support display is a bar display extending in the vertical direction, and the rear bar display becomes longer as the degree of danger to other vehicles is higher.
A driving assistance display device characterized by that. In claim 1,
The rear support display is divided into two types: a left rear support display that is displayed on the left side for the other vehicle on the left side, and a right rear support display that is displayed on the right side and is for the other vehicle on the right side. A driving support display device characterized by that. In claim 2,
When the other vehicle on the rear side approaches the host vehicle from the left-right direction, the rear support display is displayed so as to be inclined outward toward the vehicle width direction as it goes upward. In claim 2 or claim 3,
The left rear support display is displayed along the left front pillar in the vicinity of the left front pillar,
The right rear support display is displayed along the right front pillar in the vicinity of the right front pillar.
A driving assistance display device characterized by that. In claim 2 or claim 3,
The driving support display device according to claim 1, wherein the display means is a head-up display that performs display at a position in front of the driver's seat in the front window glass. In any one of Claims 2 thru | or 5,
The display means is further configured to display a pair of left and right front support displays on the front window glass indicating that another vehicle exists on the left and right front sides of the host vehicle,
The front support display is a bar display extending in the vertical direction, and the front bar display is made longer as the degree of danger to other vehicles is higher,
The front support display is displayed below the rear support display.
A driving assistance display device characterized by that. In claim 6,
The display means is configured to display a pair of left and right indicators indicating the position of the host vehicle in a substantially middle part in the vertical direction of the front window glass.
The rear support display is displayed to extend upward from the indicator,
The front support display is displayed so as to extend downward from the indicator.
A driving assistance display device characterized by that. In claim 6 or claim 7,
When the other vehicle on the front side approaches the host vehicle from the left-right direction, the front support display is displayed so as to be inclined outward toward the vehicle width direction as it goes downward. Driving assistance display device. In any one of Claims 1 thru | or 8,
The bar display is performed by a frame line, and the inside of the frame line can be seen through.

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