JP6176148B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a display device for a vehicle that displays a display image, which is a virtual image, superimposed on a real scene by projecting an image onto a projection member in front of a driver.

  2. Description of the Related Art A vehicular display device that displays a display image that is a virtual image superimposed on a real scene by projecting an image onto a projection member in front of the driver is known as a related art.

  In the vehicular display device disclosed in Patent Literature 1, a night vision image in which an obstacle ahead of the vehicle is highlighted is superimposed on the actual scene. And when a road sign is detected, the brightness | luminance of the night vision image which detected the road sign is made small. Thereby, it is possible to improve the visibility of the road sign despite the fact that the night vision image highlighting the obstacle ahead of the vehicle is superimposed on the actual scene.

JP 2007-288657 A

  By the way, a traveling stability system that keeps traveling stability of a vehicle, such as DSC, ABS, and TCS, is known as a prior art. In the vehicle display device, when the traveling stability system is turned off, for example, by the driver's intention, the first display image indicating that the traveling stability system is turned off is displayed on the vehicle. It is desirable in terms of running stability.

  However, in the vehicular display device, the first display image and the second display other than the first display image, regardless of whether the vehicle may become unstable due to the traveling stabilization system being turned off. When the display image is displayed, when the possibility of unstable driving of the vehicle is low, the display image becomes excessive or the size of each display image becomes small, and the recognizability of the second display image May decrease.

  The present invention has been made in view of such points, and the problem is that when the vehicle is unlikely to be unstable, the second display image can be recognized and traveled. This is to enable the driver to recognize that the traveling stability system is turned off when there is a high possibility that the traveling of the vehicle becomes unstable because the stability system is turned off.

  In order to solve the above problem, the present invention is a case where the traveling stability system is turned off, and the traveling environment of the vehicle is unstable because the traveling stability system is turned off. When the unstable driving environment is not likely to occur, only the second display image other than the first display image indicating that the driving stability system is turned off is displayed, while the driving stability system is turned off. The first display image is displayed when the traveling environment of the vehicle becomes an unstable traveling environment.

  Specifically, the present invention is directed to a vehicular display device that displays a display image, which is a virtual image, superimposed on a real scene by projecting an image onto a projection member in front of the driver. Measures were taken.

That is, in the first invention, the display image includes a first display image indicating that the traveling stability system for maintaining the traveling stability of the vehicle is turned off, and a display image indicating the traveling environment information of the vehicle. And a second display image other than the first display image, which is detected by the environment detection means for detecting the travel environment of the vehicle and the environment detection means when the travel stability system is off. Determining means for determining whether or not the traveling environment of the vehicle is an unstable traveling environment in which the traveling of the vehicle is highly likely to be unstable because the traveling stabilization system is off; When the determination means determines that the driving environment of the vehicle is not the unstable driving environment, only the second display image is displayed among the first and second display images, while the determination means By When the running environment of the vehicle is determined to become the unstable driving environment, the and a control means for displaying at least the first display image of the first and second display image, said control means Is configured to display the first display image instead of the display image indicating the traveling environment information of the vehicle when the determination unit determines that the traveling environment of the vehicle has become the unstable traveling environment. It is characterized by being.

  According to this, when the traveling stability system that maintains the traveling stability of the vehicle is turned off, the traveling environment of the vehicle detected by the environment detecting device is turned off. It is determined whether or not an unstable traveling environment is likely to cause unstable traveling of the vehicle. When the control means determines that the driving environment of the vehicle is not an unstable driving environment, the first display image indicating that the driving stability system is off, and the first display image Since only the second display image is displayed among the second display images other than the one display image, the recognizability of the second display image can be ensured. On the other hand, when the control means determines that the driving environment of the vehicle has become an unstable driving environment by the determining means, at least the first display image is displayed among the first and second display images. The driver can recognize that it is off. From the above, when the possibility of unstable driving of the vehicle is low, the recognizability of the second display image is ensured, and the driving of the vehicle may become unstable because the driving stability system is turned off. When the driving performance is high, the driver can recognize that the traveling stability system is turned off.

  In a second aspect based on the first aspect, the control means is configured such that the control means determines the first display image when the determination means determines that the traveling environment of the vehicle is the unstable traveling environment. After the display, when the predetermined manual operation is performed, the display of the first display image is turned off.

  According to this, when the control means determines that the driving environment of the vehicle has become an unstable driving environment, the control means displays the first display image, and then a predetermined manual operation is performed. When the driver recognizes the first display image, the display of the first display image is erased, so that the first display image is wasted even though the driver has recognized the first display image. The display can be suppressed.

  According to the present invention, according to the present invention, when the traveling stability system that maintains the traveling stability of the vehicle is turned off, the traveling environment of the vehicle is reduced because the traveling stability system is turned off. When it is determined whether or not an unstable driving environment is likely to become unstable, and it is determined that the driving environment of the vehicle is not an unstable driving environment, the driving stability system is turned off. Among the first display image indicating that the vehicle is driving and the second display image other than the first display image, only the second display image is displayed, and it is determined that the driving environment of the vehicle has become an unstable driving environment. Since at least the first display image is displayed among the first and second display images when the vehicle is less likely to become unstable, the recognizability of the second display image is ensured. Driving stability system is turned off When the traveling of the vehicle is likely to become unstable in are deed, driving stability system can recognize the driver to the effect that is turned off.

It is a block diagram showing a display for vehicles concerning an embodiment of the present invention. When the DSC is turned on or when the DSC is turned off, there is a high possibility that the running environment of the vehicle becomes unstable because the driving environment of the vehicle is turned off. It is the schematic which looked at the mode that a display image is superimposed and displayed on a real scene from the vehicle rear side when it is not in unstable driving environment. When the DSC is turned off and the driving environment of the vehicle is an unstable driving environment where there is a high possibility that the driving of the vehicle becomes unstable because the DSC is turned off. FIG. 3 is a view corresponding to FIG. 2 illustrating a state in which a display image is displayed. It is a flowchart figure which shows the procedure of the display control of a control apparatus.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its application, or its use.

  The vehicle display device 1 according to the embodiment of the present invention projects a display image, which is a virtual image, on the front window glass 3 by projecting an image onto a front window glass 3 (projection member) provided in front of the driver 2. It is a vehicle-mounted head-up display (hereinafter simply referred to as a head-up display) that is superimposed on the actual scene in front of (see FIGS. 2 and 3). In the present embodiment, the vehicle v is a left-hand drive vehicle.

  As shown in FIG. 1, the head-up display 1 includes a car navigation system 10 (NAVI in FIG. 1), a front camera 11, a vehicle speed sensor 12, a face camera 13, and an operation sensor 14. , An environmental sensor 15 (environment detection means), a switch sensor 16, a projection device 17, and a control device 18.

  The car navigation system 10 detects current position information of the host vehicle v (see FIG. 2 and the like), map information including road information ahead of the vehicle v, and the like. The front camera 11 is provided on the front window glass 3, for example. The front camera 11 detects the object information ahead of the host vehicle v, the position information of the object, etc. by imaging the front of the host vehicle v. The vehicle speed sensor 12 detects vehicle speed information of the host vehicle v. The face camera 13 is provided in front of the driver 2. The face camera 13 detects the position information of the eyes of the driver 2 by imaging the face of the driver 2.

  The operation sensor 14 is used for a vehicle v such as a dynamic stability control system (hereinafter referred to as DSC), an anti-lock brake system (hereinafter referred to as ABS), and a traction control system (hereinafter referred to as TCS). The operation information of the in-vehicle system including the on / off information of the running stability system that keeps running stability is detected.

  The environmental sensor 15 detects surrounding environment information of the vehicle v including weather information such as outside temperature and snowfall. The switch sensor 16 has a DSC, ABS, or TCS manual switch turned on by the driver (predetermined manual operation), or a predetermined manual switch other than these manual switches is Detects manual operation). Here, DSC, ABS, and TCS are not turned on even if the predetermined manual switch is operated for a predetermined time.

  The car navigation system 10, the front camera 11, the vehicle speed sensor 12, the face camera 13, the operation sensor 14, the environment sensor 15, and the switch sensor 16 are electrically connected to the control device 18.

  The projection device 17 is provided below the front window glass 3. The projection device 17 displays a display image by projecting the image onto the front window glass 3. This projection position is changed based on, for example, the position information of the eyes of the driver 2 from the face camera 13. The projection device 17 is electrically connected to the control device 18. Although a detailed description of the projection device 17 is omitted, the configuration thereof is, for example, a conventionally known one.

  The control device 18 controls display of a display image by the projection device 14 based on detection information from each of the detection devices 10 to 16. The control device 18 includes a determination unit 18a (determination unit) and a control unit 18b (control unit).

  When the operation sensor 14 detects that DSC, ABS, and TCS are turned off, the determination unit 18a determines that the traveling environment of the vehicle v detected by the car navigation system 10 or the environment sensor 15 is DSC or ABS. There is a high possibility that the running of the vehicle v is unstable because the TCS is off (in other words, the running risk of the vehicle v is high because the DSC, ABS, and TCS are off). It is determined whether or not a stable driving environment has been reached.

  Specifically, the determination unit 18a determines that the vehicle v when the DSC is turned off and the car navigation system 10 detects that the road ahead of the vehicle v is a sharp curve such as a mountain road. It is determined that the traveling environment is an unstable traveling environment where the traveling of the vehicle v is highly likely to be unstable because the DSC is off. On the other hand, when the DSC is turned off and the car navigation system 10 detects that the road ahead of the vehicle v is a straight road or a gentle curve, the traveling environment of the vehicle v indicates that the DSC is turned off. Therefore, the vehicle v is not likely to be unstable because the vehicle v is unstable (in other words, the vehicle v is in the vehicle even though the DSC is turned off. It is determined that the traveling environment of v is a stable traveling environment in which the possibility of unstable traveling is low).

  Further, the determination unit 18a assumes that the road surface is slippery when the ABS or TCS is off and the environmental sensor 15 detects that the outside air temperature is low or that it is snowing. Therefore, it is determined that the traveling environment of the vehicle v is an unstable traveling environment in which the traveling of the vehicle v is highly likely to be unstable because the ABS and the TCS are off. On the other hand, when the ABS or TCS is turned off and the environmental sensor 15 detects that the outside air temperature is not low or snow is not falling, the traveling environment of the vehicle v is turned off. Therefore, it is not an unstable driving environment in which the driving of the vehicle v is likely to be unstable (in other words, the driving environment of the vehicle v is in spite of the ABS and TCS being off). Therefore, it is determined that the traveling environment of the vehicle v has a low possibility of unstable driving).

  The control unit 18b determines that DSC, ABS, and TCS are turned on by the operation sensor 14, or the determination unit 18a determines that the traveling environment of the vehicle v is not an unstable traveling environment. When this is done, only the second display image is displayed among the first display image indicating that DSC, ABS, and TCS are off and the second display image other than the first display image. On the other hand, when the determination unit 18a determines that the traveling environment of the vehicle v is an unstable traveling environment, both the first and second display images are displayed. In addition, when the determination unit 18a determines that the traveling environment of the vehicle v has become an unstable traveling environment, the control unit 18b causes the control unit 18b to display the first display image, and then uses the switch sensor 16 to perform DSC or ABS. The driver 2 recognizes the first display image when it is detected that the manual switch of the TCS has been turned on by the driver 2 or that the predetermined manual switch has been operated by the driver 2. The display of the first display image is turned off.

  Hereinafter, an example of the display will be described in detail with reference to FIGS. In the following description, the first display image indicating that DSC is turned off will be described. Moreover, the code | symbol w shown in FIG.2 and FIG.3 is the road which comprises a real scene.

FIG. 2 shows that when the DSC is turned on or when the DSC is turned off, the traveling environment of the vehicle v is unstable because the traveling environment of the vehicle v is turned off. It is the schematic which looked at a mode that the 2nd display picture is superimposed on a real scene, and is displayed when it is not in the unstable driving environment where possibility of becoming high is high. In FIG. 2, a display image 1 of a speed limit sign, a display image m of characters “freezing attention” ( a display image indicating vehicle driving environment information), and a turn-by-turn display image n are used as second display images. They are displayed in this order from the left side. These display images 1 to n are displayed on the front side of the driver 2 and immediately above the instrument panel 4 in the vehicle front-rear direction view.

  FIG. 3 shows a case where the DSC is turned off, and the traveling environment of the vehicle v is an unstable traveling environment in which the traveling of the vehicle v is highly likely to be unstable because the DSC is turned off. FIG. 3 is a view corresponding to FIG. 2 and showing a state in which both the first and second display images are displayed when the image is displayed. In FIG. 3, the display image o of the characters “DSC OFF” is displayed as the first display image, and the display image 1 of the speed limit sign and the display image n of the turn-by-turn are displayed as the second display image. That is, in FIG. 3, the same number of display images l, n, and o as the display images 1 to n shown in FIG. 2 are displayed. Then, the display image l of the speed limit sign, the display image o of the characters “DSC OFF”, and the display image n of turn-by-turn are in this order from the left side in front of the driver 2 and in the vehicle longitudinal direction view. It is displayed directly above the instrument panel 4. That is, the display image o of the characters “DSC OFF” is displayed instead of the display image m of the characters “Caution Freezing” in FIG. 2, and is located in the middle of the display images l, n, o.

  Thus, after displaying both the first and second display images l, n, and o, the manual switch of the DSC is turned on by the driver 2, or the predetermined manual switch is operated by the driver 2 for a predetermined operation. When it is done, the first display image o is erased. At this time, for example, of the first and second display images l, n, and o, only the display of the first display image o is erased, or both of them are erased, or the display images l to n shown in FIG. Or display.

  Hereinafter, the display control procedure of the control device 18 will be described with reference to the flowchart shown in FIG. In the following description, description will be made based on an example of the display shown in FIGS.

  First, in step S1, only the second display images 1 to n are displayed. Next, in step S2, it is determined based on the detection information of the actuation sensor 14 whether the DSC is off. When the determination result of step S2 is YES and it is turned off, the process proceeds to step S3. On the other hand, when the determination result is NO and the process is on, the process returns to step S1.

  In step S3, based on the detection information from the car navigation system 10, the traveling environment of the vehicle v becomes an unstable traveling environment in which the traveling of the vehicle v is highly likely to be unstable because the DSC is off. It is determined whether or not. If the determination result in step S3 is YES and the driving environment is unstable, the process proceeds to step S4. On the other hand, when the determination result is NO and the unstable traveling environment is not established, the process returns to step S1.

  In step S4, both the first and second display images l, n, o are displayed. Next, in step S5, based on the detection information from the switch sensor 16, it is determined whether the DSC manual switch has been turned on by the driver or whether a predetermined manual switch has been operated by the driver. If the determination result in step S5 is YES, the driver 2 recognizes the first display image o displayed in step S4, and the process proceeds to step S6. On the other hand, when the determination result is NO, the driver 2 has not recognized the first display image o displayed in step S4, and the process returns to step S3.

  In step S5, the display of the first display image o is erased. Then go to the end.

-Effect-
As described above, according to the present embodiment, when the traveling stability system that maintains the traveling stability of the vehicle v, such as DSC, ABS, or TCS, is turned off, the determination unit 18a or the environment sensor 10 It is determined whether or not the traveling environment of the vehicle v detected by 15 is an unstable traveling environment in which the traveling of the vehicle v is highly likely to be unstable because the traveling stabilization system is off. When the control unit 18b determines that the traveling environment of the vehicle v is not an unstable traveling environment by the determining unit 18a, a first display image indicating that the traveling stabilization system is off, and Since only the second display image is displayed among the second display images other than the first display image, the recognizability of the second display image can be ensured. On the other hand, since the control unit 18b displays both the first and second display images when the determination unit 18a determines that the traveling environment of the vehicle v has become an unstable traveling environment, the traveling stabilization system is turned off. The driver 2 can recognize that it is. As described above, when the possibility that the traveling of the vehicle v is unstable is low, the recognition of the second display image is ensured, and the traveling of the vehicle v is unstable because the traveling stabilization system is turned off. The driver can recognize that the traveling stability system is turned off when the possibility that the vehicle is likely to turn off is high.

  Further, when the control unit 18b determines that the traveling environment of the vehicle v has become an unstable traveling environment by the determining unit 18a, the control unit 18b displays the first display image, and then the switch sensor 16 performs the traveling stabilization system. When the driver 2 recognizes the first display image when it is detected that the manual switch is turned on by the driver 2 or the predetermined manual switch is operated by the driver 2. Since the display of the first display image is turned off, it is possible to prevent the first display image from being continuously displayed in vain even though the driver 2 recognizes the first display image.

(Other embodiments)
In the said embodiment, although the to-be-projected member which concerns on this invention was comprised with the front window glass 3, you may comprise with the combiner different from the front window glass 3 provided not only in this but the driver | operator 2 in front. .

  In the above embodiment, the travel stability system according to the present invention is configured by DSC, ABS, or TCS. However, the present invention is not limited to this, and any system can be used as long as the travel stability of the vehicle v is maintained. Good.

  In the above embodiment, the display image o of the characters “DSC OFF” is displayed as the first display image. However, the display image o is not limited to this, and indicates that the DSC is turned off (in other words, the fact that Any display image may be displayed as long as it can be understood. This is also true for display images that indicate that ABS and TCS are off.

  Further, in the above embodiment, the display image o of the characters “DSC OFF” is the first display image, and the speed limit sign display image 1 and the turn-by-turn display image n are the second display image. However, the present invention is not limited to this. For example, the first display image o may be displayed larger than the second display images l and n in order to make the first display image o stand out.

  In the above-described embodiment, the display image o of the characters “DSC OFF” is continuously displayed. However, the display image o is not limited to this. For example, the display image o may be displayed in a blinking manner.

  In the above embodiment, the display image l of the speed limit sign, the display image m for assisting recognition of the inter-vehicle distance, and the display image n of turn-by-turn are displayed as the second display image. In addition or alternatively, a display image for recognizing and supporting the inter-vehicle distance from the preceding vehicle, a display image of the vehicle speed, or the like may be displayed.

Moreover, in the said embodiment, when the driving | running environment of the vehicle v became an unstable driving | running | working environment, both the 1st and 2nd display images were displayed, However, You may display only a 1st display image.

  In the above embodiment, the display position of the display images 1 to o is set to the front side of the driver 2 and directly above the instrument panel 4 in the vehicle front-rear direction view. Any position may be used as long as the forward visibility of 2 can be secured.

  As described above, the vehicular display device according to the present invention secures the recognizability of the second display image and the driving stability system is turned off when the driving of the vehicle is unlikely to become unstable. This can be applied to applications that require the driver to recognize that the driving stability system is turned off when there is a high possibility that the vehicle will become unstable because of .

1 Head-up display (vehicle display device)
10 Car navigation system (environment detection means)
15 Environmental sensor (environment detection means)
17 Projection device 18 Control device 18a Determination unit (determination means)
18b Control unit (control means)
2 Driver 3 Front window glass (projected member)
l to n second display image o first display image

Claims (2)

A display device for a vehicle that superimposes and displays a display image that is a virtual image on a real scene by projecting an image onto a projection member in front of the driver,
The display image includes a first display image that indicates that the traveling stability system that maintains the traveling stability of the vehicle is turned off, and a display image that indicates the traveling environment information of the vehicle . It consists of two display images,
Environment detecting means for detecting the traveling environment of the vehicle;
When the traveling stability system is turned off, the traveling environment of the vehicle detected by the environment detecting means may be unstable because the traveling stability system is turned off. Determination means for determining whether or not an unstable driving environment has become
When the determination means determines that the driving environment of the vehicle is not the unstable driving environment, only the second display image is displayed among the first and second display images, while the determination means Control means for displaying at least the first display image of the first and second display images when it is determined that the driving environment of the vehicle has become the unstable driving environment .
The control means causes the first display image to be displayed instead of the display image indicating the driving environment information of the vehicle when the determining means determines that the driving environment of the vehicle has become the unstable driving environment. It is comprised as follows . The display apparatus for vehicles characterized by the above-mentioned . The vehicle display device according to claim 1,
The control means causes the control means to display the first display image when the determination means determines that the traveling environment of the vehicle is the unstable traveling environment, and then performs a predetermined manual operation. And a display device for a vehicle, wherein the display of the first display image is turned off.

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