JP4970379B2 - Vehicle display device - Google Patents

Description

  The present invention belongs to the technical field of vehicle display devices.

Conventionally, a display image in which a vehicle ahead is indicated is displayed as a virtual image using a windshield, and a display unit that performs this display has at least two display images with a predetermined interval at which binocular parallax becomes the largest. (For example, refer to Patent Document 1).
JP 2000-57491 A (page 2-8, full view)

However, conventionally, since four targets are visually recognized by one target, there is a problem that it is difficult to correspond the target and the target.
This point will be described in detail.
When a driver who is looking far away sees a virtual image display on the display, the problem of a double image that appears double appears. Conventionally, two or more display images are separated from each other by a predetermined distance or a horizontally long display of a predetermined length with respect to one object, for example, a preceding vehicle. Since four visual targets are visually recognized with respect to the object, there arises a problem that it is difficult to correspond the symmetrical object and the visual target.

  The present invention has been made paying attention to the above-mentioned problems, and the object of the present invention is to improve the correspondence between the object and the target while taking measures against double images. It is in providing the display apparatus for vehicles which can transmit this information.

In order to achieve the above object, in the present invention, the obstacle detection means for detecting a front obstacle of the own vehicle, the line-of-sight detection means for detecting the driver's line-of-sight position, and the obstacle detected in the forward visibility direction of the driver Display means for displaying a virtual image that allows a driver to recognize the display, wherein the display means displays a virtual image display forming a unique craft on top of the front obstacle, and the virtual image display is a driver When a double image display is obtained by focusing on the front obstacle, the vertical length is the same as when the driver focuses on the virtual image display, and the horizontal direction and wherein the formation child one design which varies the length of only.

  Therefore, in the present invention, the correspondence between the obstacle (target object) and the target can be improved while taking measures against the double image, and further the information on the obstacle (target object) is transmitted. Can do.

Hereinafter, the embodiments for realizing the vehicle display device of the present invention will be described on the basis of the actual Example 1 and the actual施例2.

First, the configuration will be described.
FIG. 1 is a schematic explanatory diagram of a vehicle display device according to a first embodiment.
The vehicle display device 1 according to the first embodiment includes a controller 2, a light source 3, an LCD 4, and a mirror 5, and cooperates with a driver camera 7 and an outside camera 11.
The controller 2 uses a driver camera 7 to detect the driver's eye position and line of sight, an obstacle detection system in front of the vehicle by the outside camera 11, the display content of the LCD 4, the light source 3, navigation, vehicle speed Calculation and control of input from sensors and the like.

The light source 3 projects light from behind so that the display on the LCD 4 has brightness.
The LCD 4 performs image display of display contents set by the controller 2.
The mirror 5 reflects the display light from the LCD 4 toward a predetermined position of the front windshield 6. The front windshield 6 may be provided with a semi-reflective member or the like so as to have a predetermined reflectance and transmittance.
In addition, the instrument panel 10 above the mirror 5 is configured to open and allow display light to pass therethrough.

The driver camera 7 is installed on the upper part of the steering column 8 and images the face of the driver through the steering wheel 9.
The vehicle exterior camera 11 is installed, for example, at the front end of the vehicle and images the front of the vehicle. This outside camera 11 may be a stereo camera.
Moreover, the controller 2 acquires information from a navigation or a vehicle speed sensor directly or via in-vehicle communication. This is input information 13.
In addition, the display apparatus 1 for vehicles of Example 1 shall display on the comparatively wide range of the front windshield 6, and shall display a virtual image superimposed on the driver's front view.

FIG. 2 is a diagram showing a control block structure of the controller 2 of the vehicle display device.
The controller 2 includes a driver gaze detection unit 21, an outside information processing unit 22, a vehicle information processing unit 23, a display image generation unit 24, an image display control unit 25, and an HUD display unit 26.
As a driver monitoring system, the driver gaze detection unit 21 performs image processing such as detecting feature points from an image obtained by capturing the driver's face, and detects the position of the eyeball.

As the obstacle detection system, the vehicle exterior information processing unit 22 processes an image captured by the vehicle exterior camera 11 to detect an obstacle such as a pedestrian or a preceding vehicle, and displays the display image generation unit 24 and the image display as vehicle exterior information. Output to the control unit 25. For example, specifically, an image captured by the camera 11 outside the vehicle is converted into multiple values, subjected to a labeling process, and the pattern matching process determines whether the obstacle corresponds to a pedestrian prepared in advance or a vehicle ahead. to decide.
The vehicle information processing unit 23 inputs and processes input information 13 from a navigation, a vehicle speed sensor, and the like, and outputs the processing result to the display image generation unit 24 and the image display control unit 25 as vehicle information.

The display image generation unit 24 generates a display image based on the vehicle exterior information and the vehicle information, and outputs the display image to the image display control unit 25.
The image display control unit 25 calculates the display position of the image from the eyeball position of the driver and outputs it to the HUD display unit 26. Further, the image display control unit 25 determines whether or not to display the display of the content of the obstacle (front vehicle display 210 or the like) based on the outside information and the vehicle information, and outputs it to the HUD display unit 26.
The HUD display unit 26 performs processing for displaying the commanded display contents at the commanded display position of the LCD 4.

FIG. 3 is an explanatory diagram illustrating a first display image according to the first embodiment.
In the first embodiment, the dot pattern 201 shown in FIG. 3 is displayed so as to be superimposed on the detected obstacle.
The dot pattern 201 is obtained by arranging a large number of small circular dots 201a within a predetermined range. Note that this predetermined range is changed according to the size of the obstacle visible to the driver. In that case, the number of dots 201a may be increased or decreased, and the size of the dots 201a may be increased or decreased.

FIG. 4 is an explanatory diagram illustrating a second display image according to the first embodiment.
In the first embodiment, the detected obstacle is specified by a predetermined classification, and according to the type of the obstacle, the display indicating to the driver what the obstacle is is at the same position in the left-right direction of the dot pattern 201, Display below.
FIG. 4 shows a forward vehicle display when the outside information processing unit 22 determines that the obstacle is a forward vehicle.
The forward vehicle display 210 is a vehicle-shaped design placed in a rectangular frame.
The dot pattern 201 and the forward vehicle display 210 displayed below the dot pattern 201 are displayed so that the left and right directions match even if the distance is increased in the vertical direction so that the driver can recognize that they correspond. Further, in the first embodiment, in order to increase the correspondence, the dot pattern 201 and the forward vehicle display 210 are similar in a plurality of characteristics such as display color, image width, and luminance.

The operation will be described.
[About double images]
Here, in order to explain the operation of the vehicle display device according to the first embodiment, a double image will be described.
The HUD display shows a speed display, a route guidance icon, an approach warning, a reflective member such as a front windshield or a combiner, slightly downward with respect to the driver center line of sight, or slightly lower left or lower right with respect to the driver center. The advantage is that warnings are displayed and the movement of the line of sight is less than that of other displays. In addition, since the focus adjustment speed is further increased, it is desirable to form a distant image on the display. As a result, in a normal driving state, the focal length difference when looking at the display with respect to the object (obstacle) or landscape that the driver is looking at, that is, the difference between the object (obstacle) and the display imaging position is Since it becomes small, it leads to maintaining a better driving state.

  By displaying in the area that the driver is viewing while traveling, that is, the direction and range that is being watched carefully, the driver can view or judge the display content without moving the line of sight more. This is preferable because information can be obtained while maintaining the driver's concentration in the forward field of view.

In this case, if the distance from the driver to the object (obstacle), for example, 20 m, and the distance from the driver to the far-field image display (virtual image display), for example, 2 m are different, see the object (obstacle) and focus. When aligned, the far-field image display (virtual image) looks double. On the other hand, when looking at the display and adjusting the focus, the object (obstacle) may appear double. This is because the images formed on the retinas of both eyes are different (retinal image difference) because the eyeballs are about 6.5 cm apart in the horizontal direction.
In the first embodiment, a countermeasure against the double image is sufficiently taken.

[Action to improve the correspondence between the target and the target and transmit the target information]
FIG. 5 is an explanatory diagram illustrating a display example by the vehicle display device according to the first embodiment.
In the vehicular display device according to the first embodiment, a front vehicle or a pedestrian detected by the driver camera 7 is used as an obstacle, and highlighting is performed so that the driver can recognize the first virtual image.

(When the driver focuses on the vehicle ahead)
For example, when a vehicle ahead is detected as an obstacle (object) by the vehicle outside camera 11, the display image generation unit 24 obtains this as vehicle outside information and takes the vehicle speed of the host vehicle obtained as vehicle information into consideration. Display to make the driver recognize the vehicle.
At that time, in the first display superimposed on the preceding vehicle, the size is displayed in a rectangular range covering the preceding vehicle when displayed as a double image. The dot patterns 202a and 202b are displayed within the rectangular range.
Further, in the first embodiment, a forward vehicle display 210 that is a display indicating that the vehicle is a forward vehicle is displayed below the dot pattern 201. When this double image is seen, the forward vehicle displays 210a and 210b are displayed.

  The dot pattern 201 (reference numerals 202a and 202b as a double image display in FIG. 5A) is displayed twice when the driver's line of sight is focused on the preceding vehicle. (Refer to reference numeral 301 in FIG. 5 (a)). At this time, the dot pattern 201 has a clear dot arrangement for the sake of explanation, but in reality, it is a slightly finer one design that does not give a sense of incongruity to being displayed twice. (See FIG. 4 (a)).

Since this dot pattern 201 is a display having brightness by the light source 3, it is a display in which the vehicle ahead is emphasized. This makes it possible to notice a highlighted display so that the driver can surely recognize the vehicle ahead and assist good driving.
In this way, even if a double image is displayed, a display that does not give a sense of incongruity is superimposed, so that there are a plurality of obstacles ahead such as the vehicle ahead and a plurality of virtual image displays. Will be strong and will support driving well.
In addition, the display of the dot pattern 201 transmits information on the height direction of an obstacle such as a vehicle ahead, and gives the driver a sense of distance to the obstacle. This is very advantageous in driving support for the driver as compared with the case of displaying only in the horizontal direction as a countermeasure for the double image.

  Further, a forward vehicle display 210 is displayed below the dot pattern 201 as a second virtual image display. When the driver focuses on the vehicle ahead, it looks like a double image as shown by reference numerals 210a and 210b in FIG. 5 (a), but at a position away from the vehicle below the vehicle ahead. By displaying, the forward vehicle display 210 is made difficult to be visually recognized in the case of a double image, and does not give a sense of incongruity.

  To explain further, human visual characteristics are excellent in spatial frequency characteristics only in central vision, and even minute objects can be visually recognized. For this reason, the perception of the shape becomes more difficult as the distance from the center increases. Since the driver sees the traveling direction of the vehicle, the line of sight increases near the infinity point on the driver center. In the first embodiment, since the forward vehicle display 210 is performed at a position away from the lower side of the dot pattern 201, the forward vehicle display 210 is displayed at a position away from the central view. The shape details of the display 210 are difficult to visually recognize, and the double image of the front vehicle display 210 is difficult to visually recognize.

(When the driver focuses on the dot pattern)
When the driver focuses the line of sight on the dot pattern 201, the front vehicle appears to be double (see reference numerals 301a and 301b in FIG. 5B). Then, a dot pattern 201 that is not a double image display can be seen.
It can be said that the dot pattern 201 differs only in size and has the same design as the dot patterns 202a and 202b displayed as double images. Only the number of dots increases to the left and right. For this reason, even if it is displayed superimposed on the vehicle in front, it does not give the driver a sense of discomfort regarding whether or not to display a double image.

As described above, the vehicle display device according to the first embodiment improves the correspondence between the emphasized target (obstacle) and the target (superimposed display) while sufficiently taking measures against the double image display. be able to.
Furthermore, in this case, the forward vehicle display 210 that is the second virtual image display appears below the dot pattern 201 as a display that is not a double image.
Therefore, by focusing on the dot pattern 201, the forward vehicle display 210 can be seen as a focused display below the dot pattern 201 even if the recognition of the forward vehicle is thinned. Communicate enough. Therefore, good driving is supported.
In the first embodiment, the dot pattern 201 and the forward vehicle display 210 are displayed at a distance from each other in the vertical direction, but the left and right directions are matched so that the driver recognizes that the dot pattern 201 and the forward vehicle display 210 correspond to each other. Let

(When the driver does not recognize the vehicle ahead)
In the first embodiment, the vehicle exterior camera 11 is mounted on the vehicle to detect an obstacle, and an image ahead of the vehicle is captured. Then, by performing image processing on the captured image, it is detected that the front obstacle is a forward vehicle, a pedestrian, or the like. This detection is performed early so that the driver can visually recognize.
In some cases, the driver is not visually recognizing the front obstacle.
In such a case, in the first embodiment, the dot pattern 201 is displayed at the obstacle position in the front view of the driver, and the front vehicle display 210 is displayed below the dot pattern 201.

  Then, the driver notices the display of the dot pattern 201 and recognizes that there is a dangerous obstacle in the range. This alerts the driver and increases his concentration on driving. The distance information is recognized based on the position of the dot pattern 201 and the length in the height direction. Furthermore, when the dot pattern 201 is noticed, the forward vehicle display 210 below the dot pattern 201 is also noticed. The dot pattern 201 and the forward vehicle display 210 are displayed with their left and right positions aligned, and a plurality of feature points such as display color, image width, and luminance are similar. Therefore, the driver recognizes that the dot pattern 201 corresponds to the forward vehicle display 210, and recognizes that the obstacle is the forward vehicle. As a result, the driver recognizes the preceding vehicle at an early stage.

[Object information display control process]
In the first embodiment, in addition to displaying the front vehicle display 210 indicating the contents of the obstacle (object information display) as described above, display / non-display switching control is further performed.
FIG. 6 is a flowchart showing a flow of control processing for determining whether or not to perform object information display executed by the image display control unit 25 of the vehicle display device according to the first embodiment. Each step will be described below.

  In step S11, as environment determination processing, it is determined whether or not the vehicle is in an environmental state where it is easy to determine the object (obstacle) based on the outside information and vehicle information. If the object determination is easy, the process proceeds to step S15. If it is difficult to determine the object, the process proceeds to step S12.

  In step S12, as a distance determination process, it is determined whether the distance from the vehicle to the object (obstacle) is equal to or greater than a preset distance threshold. If the distance is equal to or greater than the threshold, the process proceeds to step S13. If smaller, the process proceeds to step S15.

  In step S13, the display (front vehicle display 210 etc.) which shows the content with respect to a target object (obstacle) is determined. When the contents are determined in advance by image processing such as pattern matching, the contents may be determined in this processing.

  In step S14, the image display control unit 25 outputs a command output to display the double image countermeasure display, that is, the display of the dot pattern 201 and the object information display, that is, the display of the front vehicle display 210, and the process ends.

  In step S15, the image display control unit 25 performs a command output that only displays the double image countermeasure display, that is, the dot pattern 201, and does not display the object information display, that is, the front vehicle display 210, and ends the process. .

  Next, FIG. 7 shows a control process for whether to switch the display to non-display when the object information display executed by the image display control unit 25 of the vehicle display device of the first embodiment is performed. Each step will be described below with reference to a flow chart.

  In step S21, as a distance determination process, it is determined whether the distance between the vehicle and the object is equal to or greater than a preset distance threshold (the same threshold as in step S12). If the distance is equal to or greater than the threshold, the process proceeds to step S23. If the distance is smaller than the threshold value, the process proceeds to step S22.

  In step S22, the object information display, that is, the display of the forward vehicle display 210 is switched to non-display, and the image display control unit 25 performs a command output for erasing the display, and the process ends.

  In step S23, as the line-of-sight determination processing, is the image line-of-sight control unit 25 determined by the driver line-of-sight position detected by the driver line-of-sight detection unit 21 to be equal to or greater than a predetermined threshold value, If the stop time is equal to or greater than the threshold, the process proceeds to step S22. If the stop time is smaller than the threshold, the process proceeds to step S24.

  In step S24, as the vehicle information determination process, whether or not the image display control unit 25 is performing an operation that can determine that the driver has recognized the object (obstacle) from the vehicle information is greater than or equal to a preset threshold value. If the vehicle operation is greater than or equal to the threshold value, the process proceeds to step S22. If the vehicle operation is less than the threshold value, the process is terminated and the object information display is continuously displayed.

[Action to convey the content of the object while cooperating with measures against double images and improved correspondence between the object and the target]
In the first embodiment, display that emphasizes an obstacle in the driver's front view is performed by the first display using the dot pattern 201. However, the display with emphasis by the dot pattern 201 is very effective as a countermeasure against double images. However, when the obstacle becomes difficult to see directly such as at a long distance or at night, the contents of the obstacle, that is, what the obstacle is. It becomes difficult for the driver to judge. Therefore, in Example 1, the front vehicle display 210 is displayed so that the content of the obstacle is shown below the dot pattern 201, and the obstacle information is transmitted.

  The obstacle information display (second display), that is, the forward vehicle display 210 is displayed at a lower position with respect to the dot pattern 201 and is taken into consideration when taking measures against double images. However, as shown in FIG. 5 (a), the image appears as a double image. In the first embodiment, as described below, an unnecessary case is detected and the display of the obstacle information is switched to non-display. Thus, it is possible to transmit the contents of the obstacle while further improving the correspondence between the double image and the obstacle and the target.

  First, when a front vehicle is detected as an obstacle and the dot pattern 201 is displayed, if the obstacle is very easy to see, such as daytime, the image display control unit 25 performs step S11 based on information outside the vehicle and vehicle information. This is judged in the process of (1), and a display is made so as to perform alerting only by the dot pattern 201. Accordingly, the display of the forward vehicle display 210 is suppressed only when necessary, thereby sufficiently exhibiting the double image countermeasure action of the dot pattern 201 and the improvement of the correspondence between the obstacle and the target.

  Next, when the preceding vehicle is detected as an obstacle and the dot pattern 201 is displayed, if the distance from the own vehicle to the preceding vehicle is a distance that should be immediately avoided, the image display control unit 25 This is determined in the process of step S12 by comparing the distance between the vehicle and the distance from the vehicle information and the threshold value of the vehicle information, and displays only the alerting by the dot pattern 201. Accordingly, the display of the forward vehicle display 210 is suppressed only when necessary, thereby sufficiently exhibiting the double image countermeasure action of the dot pattern 201 and the improvement in correspondence between the target and the target, and to the forward vehicle. It is consideration that gives top priority to visual recognition.

If the above-described case does not apply, the forward vehicle display 210 is displayed together with the dot pattern 201 by the process of step S14.
Of the two displays, the forward vehicle display 210 is switched to a non-display state and erased as a display in the case described below.
First, after the forward vehicle display 210 is displayed, when the distance from the host vehicle to the forward vehicle becomes a distance at which an avoidance operation should be performed immediately, the image display control unit 25 determines the inter-vehicle distance and distance from the outside information and the vehicle information. This is determined in the process of step S21 by comparison with the threshold value. In this determination, it is determined that the driver has acquired the obstacle information. Then, the forward vehicle display 210 is switched to non-display and erased so that only the alerting by the dot pattern 201 is performed. Therefore, if the driver acquires the obstacle information, consideration is given so that the countermeasure against the double image and the improvement of the correspondence between the object and the target are sufficiently effective.

  Next, after the forward vehicle display 210 is displayed, in the driver's line-of-sight detection, when the driver's line of sight looks at the vehicle ahead, that is, when the line-of-sight stop time exceeds a preset threshold, the process of step S23 Thus, it is determined that the driver has acquired the obstacle information. Then, the forward vehicle display 210 is switched to non-display and erased so that only the alerting by the dot pattern 201 is performed. Therefore, if the driver acquires the obstacle information, consideration is given so that the countermeasure against the double image and the improvement of the correspondence between the object and the target are sufficiently effective.

  Next, after the forward vehicle display 210 is displayed, for example, the driver increases the distance between the vehicles, performs the avoidance operation, or the like, the vehicle outside information and the vehicle information, for example, the threshold value such as the brake operation amount, the accelerator opening, the steering angle, etc. If the change is detected, it is determined by the process of step S24 that the driver has acquired the obstacle information. Then, the forward vehicle display 210 is switched to non-display and erased so that only the alerting by the dot pattern 201 is performed. Therefore, if the driver acquires the obstacle information, consideration is given so that the countermeasure against the double image and the improvement of the correspondence between the object (obstacle) and the target are fully effective.

  As described above, in the vehicle display device according to the first embodiment, the contents of the object are transmitted while cooperating with the double image countermeasure and the improvement in correspondence between the object (obstacle) and the target.

Next, the effect will be described.
In the vehicle display device according to the first embodiment, the effects listed below can be obtained.

  (1) An outside camera 11 and an outside information processing unit 22 that detect a front obstacle of the host vehicle, a driver camera 7 and a driver line-of-sight detection unit 21 that detect a driver's line-of-sight position, and detection in the driver's forward view direction In the vehicle display device having the HUD display unit 26 and the LCD 4 and the light source 3 for displaying a virtual image to make the driver recognize the obstacle, the HUD display unit 26 and the LCD 4 and the light source 3 are arranged so that the driver focuses on the front obstacle. A dot pattern 201 that forms a unique design when a double image display is obtained by viewing is generated by the display image generation unit 24, and is overlapped or surrounded by a front obstacle (front vehicle) by the image display control unit 25. The front vehicle display 210 is a design that displays information on the front obstacle (the vehicle ahead) and has similar features to the dot pattern 201 in image width, display color, brightness, and the like. Since the image is generated by the display image generation unit 24 and displayed below the dot pattern 201 by the image display control unit 25, the correspondence between the object and the target can be improved while taking measures against the double image. Information on the object can be transmitted.

  (2) In the above (1), the front vehicle display 210 is displayed at the same left-right position as the dot pattern 201 and at a position spaced downward, so that the obstacle corresponds to the dot pattern 201 is the front vehicle. By causing the driver to recognize this and displaying it at a position spaced downward, the double image countermeasure by the dot pattern 201 can be sufficiently applied.

  (3) In the above (1) or (2), the outside camera 11 for obtaining outside information and vehicle information, the outside information processing unit 22, input information such as navigation, a vehicle speed sensor, and the vehicle information processing unit 23, and this information If the environment for visually recognizing the obstacle is determined based on the above and it is determined that the front obstacle is easily visible, the environment determination process for outputting a control command for not performing the forward vehicle display 210 to the HUD display unit 26 (step S11). ) Is executed, and when it is very easy to visually recognize an obstacle, the forward vehicle display 210 is not performed, and information on the obstacle is provided, and double image countermeasures are provided. Can be fully exhibited.

  (4) In the above (1) to (3), the vehicle exterior camera 11 and the vehicle exterior information processing unit 22 detect the distance between the host vehicle and the obstacle (the vehicle ahead), and the distance from the vehicle exterior information processing unit 22 Based on the information, when the distance between the host vehicle and the obstacle (the preceding vehicle) is shorter than the preset distance, a distance determination process (step for outputting a control command for not performing the preceding vehicle display 210 to the HUD display unit 26) Since the image display control unit 25 executes S12), when the distance to the obstacle is short, the forward vehicle display 210 is not performed, and the information on the obstacle is provided, and the double image countermeasure is sufficiently exhibited. Moreover, priority can be given to direct visual recognition of the obstacle of the driver.

  (5) In the above (4), the distance determination by the image display control unit 25 is based on the distance information from the vehicle information processing unit 22 when the front vehicle display 210 is displayed by the HUD display unit 26, the LCD 4, and the light source 3. On the basis of this, when the distance between the vehicle and the obstacle (the preceding vehicle) is shorter than a preset distance threshold value, a distance determination process for outputting a control command for switching the preceding vehicle display 210 to non-display to the HUD display unit 26 ( Since the image display control unit 25 executes step S21), if the front vehicle display 210 is displayed below the dot pattern 201 and the distance from the obstacle is close, the front vehicle display 210 is not performed. Thus, it is possible to sufficiently exhibit the countermeasure against double images while providing information on the obstacle, and to prioritize direct visual recognition of the obstacle of the driver.

  (6) In the above (1) to (5), when the front vehicle display 210 is displayed by the HUD display unit 26, the LCD 4, and the light source 3, based on the driver gaze from the driver camera 7 and the driver gaze detection unit 21. Then, when the driver's line of sight looks at the obstacle and the line-of-sight stop time is equal to or greater than a preset time threshold, a line-of-sight determination process (step for outputting a control command to switch off the forward vehicle display 210 to the HUD display unit 26) Since the image display control unit 25 executes S23), it is determined that the driver has recognized the obstacle based on the driver's line-of-sight stop time, and the vehicle is switched to non-display so as not to perform the forward vehicle display 210. Thus, it is possible to sufficiently exhibit the double image countermeasure.

  (7) In the above (1) to (6), an outside camera 11 that acquires outside information and vehicle information, an outside information processing unit 22, navigation information, input information such as a vehicle speed sensor, and a vehicle information processing unit 23 are provided. When the forward vehicle display 210 is displayed by the display unit 26, the LCD 4, and the light source 3, if the amount of movement of the vehicle corresponding to the obstacle exceeds the preset threshold based on the outside information and the vehicle information. Since the image display control unit 25 executes the line-of-sight determination process (step S24) for outputting a control command for switching the front vehicle display 210 to non-display to the HUD display unit 26, the driver recognizes the obstacle by the operation of the own vehicle. Therefore, it is possible to make full use of the countermeasure against double images while providing information on obstacles by switching to non-display so that the forward vehicle display 210 is not performed.

  (8) In the above (1) to (7), the HUD display unit 26, the LCD 4, and the light source 3 display a display in which a unique design is formed even when the driver looks at the dot pattern 201 in focus. Since it is generated and displayed by the image generation unit 24, even if the focus of the driver's line of sight is on the front obstacle or on the dot pattern 201, the discomfort due to the change of focus is reduced, and 2 It is possible to improve countermeasures against multiple images.

  (9) In the above (8), the HUD display unit 26, the LCD 4, and the light source 3 are both dot patterns in which the design when the dot pattern 201 is focused and the design in which the dot pattern 201 is double-image displayed. Even if the driver's line of sight is focused on the front obstacle or the virtual image display, the same design is displayed to reduce discomfort caused by changing the focus and improve the countermeasures for double images. Can be made.

  (10) In the above (8) or (9), the HUD display unit 26, the LCD 4, and the light source 3 are displayed as a first virtual image display so as to be superimposed on the front obstacle, and in the double image display, the front obstacle is displayed. In order to display the dot pattern 201, which is a display in which a large number of points are arranged within a range that surrounds the object, the display overlapping the obstacle improves the correspondence between the obstacle and the virtual image display, and the height of the dot pattern 201 The distance information with the obstacle can be transmitted depending on the direction, and when the focus of the driver's line of sight is on the front obstacle and in the virtual image display, almost the same design in which only the number of dots on the left and right of the dot pattern 201 is different. By doing so, it is possible to sufficiently take measures against double images.

  In the first embodiment, for the sake of explanation, the front vehicle display has been described as an example of the second virtual image display, but a pedestrian display indicating a pedestrian or the like is displayed depending on the detected content of the obstacle. It is not limited to the vehicle ahead.

In the second embodiment, the shape of the alphabet “I” is arranged as the first virtual image display so as to surround the obstacle from the left and right, and the pedestrian display is displayed above the first virtual image display as the second virtual image display. It is.
The configuration will be described.
FIG. 8 is an explanatory diagram illustrating a first display image according to the second embodiment.
In the second embodiment, the display image generating unit 24 arranges I-shaped “I” (I mark) in which vertical bars are provided on the left and right sides of the detected obstacle and horizontal bars are provided on the upper and lower ends of the vertical bars. One virtual image display 203 is generated (see FIG. 8). That is, the vertical bar of “I” (I mark) indicates the height according to the distance of the obstacle from the own vehicle, and the horizontal bars at the upper and lower ends emphasize this height. In addition, the U-shaped portions of “I” (I mark, hereinafter omitted) arranged on the left and right emphasize the range where the obstacle exists.

FIG. 9 is an explanatory diagram illustrating a second display image according to the second embodiment.
In the second embodiment, the pedestrian display 220 is displayed when a pedestrian is detected as an obstacle by the vehicle exterior camera 11 and the vehicle exterior information processing unit 22.
The pedestrian display 220 is a design that represents a pedestrian.
The display width, display color, and luminance are similar to those of the first virtual image display 203, and the correspondence is improved from the feature points.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

The operation will be described.
[Action to improve the correspondence between the target and the target and transmit the target information]
FIG. 10 is an explanatory diagram illustrating a display example by the vehicle display device according to the second embodiment.
In the vehicular display device according to the second embodiment, for example, when a pedestrian is detected by the vehicle outside camera 11 with the vehicle ahead as an obstacle (object), a display for causing the driver to recognize the pedestrian is performed.

(When driver focuses on pedestrians)
As the first virtual image display, when displayed as a double image, as shown in FIG. 10 (a), display images 203a and 203b in which “I” is arranged so as to surround the pedestrian from the left and right are displayed. Do.
In other words, when the driver's line of sight is focused on the pedestrian, the display image 203a is superimposed on the area surrounding the pedestrian (see reference numeral 302 in FIG. 10A) by being displayed twice. 203b is displayed.

  In the display of “I” by the double image, it is further emphasized that the vertical bar of “I” indicates the height of the obstacle and the horizontal bars at the upper and lower ends indicate the height. Therefore, a sense of distance to the obstacle can be transmitted to the driver. In addition, since the U-shaped portions of “I” displayed on the left and right sides of the obstacle in a double image display are displayed so as to surround each other, the obstacle (object) and the virtual image display are strong. Get responsive.

  Further, in the second embodiment, a pedestrian display 220 expressing that the user is a pedestrian is displayed at a distance above the display of “I”. When the driver focuses on the vehicle ahead, it looks like a double image as indicated by reference numerals 220a and 220b in FIG. 10 (a), but at a position away from the pedestrian. By displaying, the pedestrian display 220 is made difficult to be visually recognized in the case of a double image, and does not give a sense of incongruity.

(When the driver focuses on the virtual image display “I”)
Then, when the driver focuses the line of sight on the virtual image display “I”, the vehicle ahead will appear double, and the virtual image display “I” that is not double image display will be visible.

In this case, as indicated by reference numerals 302a and 302b in FIG. 10B, a single virtual image display “I” (first virtual image display 203) divides both the pedestrians (obstacles) that appear double. Is displayed.
In this case, the height of the obstacle is transmitted to the driver while the vertical bar of the virtual image display “I” (first virtual image display 203) is displayed so as to partition the obstacles that appear double. The horizontal bars at the upper and lower ends of the virtual image display “I” emphasize this height.
In addition, the two U-shaped portions facing left and right of the virtual image display “I” (first virtual image display 203) are displayed so as to indicate the range of the pedestrian who looks double. As described above, even if the virtual image display “I” is focused, it is displayed as one design having a meaning, so that the driver does not feel uncomfortable whether or not the double image display is performed.
Furthermore, since the two U-shaped portions facing left and right of the virtual image display “I” (first virtual image display 203) indicate the range of the pedestrian that can be seen twice, the pedestrian (obstacle) and the virtual image display “I” Strong correspondence with (first virtual image display 203) is obtained.

As described above, in the vehicle display device according to the second embodiment, correspondence between the target (obstacle) and the target (superimposition display) that are more emphasized by being superimposed so as to be surrounded while sufficiently taking measures against the double image display. Can be improved.
Further, in this case, the pedestrian display 220 as the second virtual image display appears as a display that is not a double image below the virtual image display “I” (first virtual image display 203).
Therefore, by focusing on the virtual image display “I” (first virtual image display 203), even if the recognition of the vehicle ahead becomes thin, the virtual image display “I” (first virtual image display 203) is focused below. As a display, the pedestrian display 220 is visible, and the presence of the pedestrian is sufficiently transmitted to the driver. Therefore, good driving is supported.
In the first embodiment, the virtual image display “I” (first virtual image display 203) and the pedestrian display 220 are displayed apart from each other in the vertical direction, but by making the left and right directions coincide, the virtual image display “I” (first virtual image) is displayed. The driver recognizes that the display 203) corresponds to the pedestrian display 220.
As described above, the first virtual image display may be a display surrounded by “I” from the left and right. When a pedestrian is detected, the pedestrian display 220 may be performed as the second virtual image display.

Next, the effect will be described.
In the vehicle display device according to the second embodiment, in addition to the effects (1) to (8) of the first embodiment, the following effects can be obtained.

(11) In the above (8), the HUD display unit 26, the LCD 4, and the light source 3 are superimposed on the front obstacle as the first virtual image display so as to surround the front obstacle from the left and right when displaying the double image. In order to display the I-shaped display image 203 formed by the vertical bars and the horizontal bars at the upper and lower ends of the vertical bars, even if the virtual image display “I” is focused, it is displayed as one meaningful design. While preventing the driver from feeling uncomfortable about whether or not to display a double image, it is possible to perform a highly responsive display that specifies an obstacle range when displaying a double image.
In addition, even if there are a plurality of obstacles, the indication indicating the obstacle range can be displayed easily because the size of the obstacle and the distance from the own vehicle can be known with good correspondence.
Since other functions and effects are the same as those of the first embodiment, description thereof is omitted.

  As mentioned above, although the display apparatus for vehicles of the present invention has been described based on the first and second embodiments, the specific configuration is not limited to these embodiments, and each claim of the claims Design changes and additions are permitted without departing from the spirit of the invention.

  The virtual image display according to the first embodiment is an advantageous display that is surely recognized by the driver, and may be used for a warning display.

  The dots of the dot pattern may be arranged in an aligned manner or randomly arranged. The size and number of dots are preferably set so that the difference between the double image display and the in-focus display is difficult to notice and sufficient highlighting can be performed.

  As the second virtual image display, the forward vehicle display and the pedestrian display are performed. However, other persons may be displayed as long as they are specified by pattern matching from the detected image.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic explanatory diagram of a vehicle display device according to a first embodiment. It is a figure which shows the control block structure of the controller 2 of the display apparatus for vehicles. FIG. 6 is an explanatory diagram illustrating a first display image in the first embodiment. FIG. 10 is an explanatory diagram illustrating a second display image in the first embodiment. It is explanatory drawing which shows the example of a display by the display apparatus for vehicles of Example 1. FIG. It is a flowchart which shows the flow of the control processing whether the target information display performed by the image display control part of the display apparatus for vehicles of Example 1 is performed. It is a flowchart which shows the flow of the control processing whether a display is switched to non-display when the target object information display performed by the image display control part of the display apparatus for vehicles of Example 1 is performed. 10 is an explanatory diagram illustrating a first display image in Embodiment 2. FIG. FIG. 10 is an explanatory diagram illustrating a second display image in Example 2. FIG. 10 is an explanatory diagram illustrating a display example by the vehicle display device according to the second embodiment.

Explanation of symbols

1 Vehicle display device 2 Controller 3 Light source 4 LCD
DESCRIPTION OF SYMBOLS 5 Mirror 6 Front windshield 7 Driver camera 8 Steering column 9 Steering wheel 10 Instrument panel 11 Outside camera 12 Seat 13 Input information 21 Driver gaze detection part 22 Outside information processing part 23 Vehicle information processing part 24 Display image generation part 25 Image display Control unit 26 HUD display unit 101 Virtual image 201 Dot pattern 201a Dots 202a and 202b (Looks like a double image) Dot pattern 203 (Display image 203a and 203b of “I” which is the first virtual image display (Looks like a double image “ I ”display image 210 Forward vehicle display 210a, 210b (viewed as double image) Forward vehicle display 220 Pedestrian display 220a, 220b (visible as double image) Pedestrian display 301 (visible focus) Front vehicle 301a 301b (Looks like a double image) Front vehicle 3 2 (seen in focus) pedestrian 302a, (visible double image) 302b pedestrians h driver

Claims (3)

Obstacle detection means for detecting an obstacle ahead of the vehicle;
Gaze detection means for detecting the gaze position of the driver;
Display means for performing virtual image display for causing the driver to recognize the detected obstacle in the forward visual field direction of the driver;
In a vehicle display device having
The display means displays a virtual image display forming a unique craft on top of the front obstacle,
The virtual image display has the same vertical length as when the driver looks at the virtual image display when the driver becomes a double image display by focusing on the front obstacle. There, and vehicle display device comprising a forming child one design that changes only the length in the horizontal direction. The vehicle display device according to claim 1,
The display device for vehicles, wherein the virtual image display includes a portion that overlaps in the left-right direction with a unique designer when the driver looks at the virtual image display in focus during the double image display . The vehicle display device according to claim 1 or 2,
The display means performs a dot pattern display in which a large number of points are arranged within a range surrounding the front obstacle during the double image display as the virtual image display. .

Images