JP7313896B2 - vehicle display - Google Patents

Description

The present invention relates to a vehicle display device.

2. Description of the Related Art In recent years, some vehicles such as automobiles are equipped with a vehicle display device such as a head-up display (HUD). 2. Description of the Related Art Some vehicle display devices allow a driver to visually recognize a display image as a virtual image by projecting a display image displayed on a display onto a windshield via an optical system such as a reflecting mirror.

For example, Patent Literature 1 discloses a configuration in which, in order to display an arrow graphic superimposed on an image of an intersection in an easy-to-understand manner, the road width is obtained by recognizing white lines from a photographed image of the road, and the length and thickness of the arrow graphic are changed according to the road width. Further, Patent Document 1 discloses a configuration in which the shape of the arrow figure itself is changed according to the distance from the current position to the intersection to be guided. Further, Patent Literature 2 discloses a configuration in which a display image creation unit creates a display image based on information about the number of a branch point at which the vehicle should leave the circular road. Further, Patent Document 3 discloses a configuration in which a display control unit superimposes and displays a pseudo 3D object that encourages suppression or guidance that should be received by the predetermined event specified by the event specifying unit. Patent Document 4 discloses a configuration in which a guidance point where a vehicle turns on a guidance route is detected, and a guidance mark is displayed superimposed on the road surface in front of and behind the guidance point. Patent Document 5 discloses a configuration for controlling the display of information indicating a guidance destination based on the position in the line-of-sight image corresponding to the position on the front window where the information indicating the guidance destination of the vehicle is displayed, and the positional relationship between the calculated road surface area.

JP-A-9-229707 JP 2016-8912 A JP 2018-200626 A Japanese Patent Application Laid-Open No. 2017-21019 JP 2018-149884 A

By the way, in a conventional display device for a vehicle, a display image such as an arrow is superimposed on the actual scenery so that the driver can recognize the traveling direction of the own vehicle. However, the display image does not match the actual scenery, and it takes time for the driver to recognize the display and understand the direction to go. As a result, the direction of travel may be erroneously recognized, or it may take time to grasp the direction of travel, so there is room for improvement.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle display device capable of providing an intuitive and easy-to-understand display for a driver.

To achieve the above object, a vehicle display device according to the present invention is a vehicle display device for projecting a display image in front of a driver of a vehicle and displaying the display image superimposed on a real landscape in front of the vehicle, comprising route information acquisition means for acquiring route information from the current position of the vehicle to a destination, display control means for displaying a first stereoscopic image group indicating the traveling direction of the vehicle on the own lane extending at least from the front side to the back side when viewed from the driver based on the route information, andforward image acquisition means for acquiring a forward image by imaging the actual scenery in front of the vehicle; lane detection means for detecting adjacent lanes adjacent to the own lane based on the forward image;wherein the first stereoscopic image group is composed of a plurality of first stereoscopic images that have the same shape and are arranged along the direction of travel, and the display control means arranges the plurality of first stereoscopic images so that the intervals become relatively narrower from the front side toward the back side when viewed from the driver, and the size is displayed so that the size becomes relatively small.When the adjacent lane is detected by the lane detection means and the vehicle needs to change lanes based on the route information, a second stereoscopic image group indicating the traveling direction of the vehicle is displayed in the adjacent lane, the second stereoscopic image group is composed of a plurality of second stereoscopic images having the same shape and arranged along the traveling direction, and the display control means spaces the plurality of second stereoscopic images from the front side to the back side when viewed from the driver. are arranged so as to be relatively narrow and displayed so as to be relatively small in size, and among the plurality of first stereoscopic images arranged in the front side area and the back side area when viewed from the driver, the plurality of the first stereoscopic images arranged in the back side area are changed in color.It is characterized by

In order to achieve the above object, a vehicle display device according to the present invention,A vehicular display device for projecting a display image in front of a driver of a vehicle and displaying the display image superimposed on an actual landscape in front of the vehicle, comprising route information acquisition means for acquiring route information from the current position of the vehicle to a destination, display control means for displaying a first stereoscopic image group indicating the traveling direction of the vehicle on the own lane extending at least from the front side to the back side when viewed from the driver, based on the route information;Forward image acquiring means for acquiring a forward image by imaging the actual scenery in front of the vehicle; Obstacle detecting means for detecting an obstacle ahead of the own lane based on the forward image;wherein the first stereoscopic image group is composed of a plurality of first stereoscopic images that have the same shape and are arranged along the traveling direction, and the display control means arranges the plurality of first stereoscopic images so that the distance between them becomes relatively narrow from the front side to the back side when viewed from the driver, and the size is displayed so that the size becomes relatively small;When the obstacle is detected by the obstacle detection means and the distance between the vehicle and the obstacle becomes equal to or less than a threshold value, at least one of changing the color of the plurality of first stereoscopic images arranged in the back region among the plurality of first stereoscopic images arranged in the front side region and the back side region when viewed from the driver or narrowing the interval between the plurality of first stereoscopic images arranged in the back region is performed, and the distance between the plurality of first stereoscopic images arranged in the back region is narrowed. increasecharacterized by.

The display device for a vehicle may further include lane detection means for detecting adjacent lanes adjacent to the own lane based on the forward image, and when the obstacle is detected by the obstacle detection means and the adjacent lane is detected by the lane detection means, the display control means displays a second stereoscopic image group indicating the traveling direction of the own vehicle on the adjacent lanes, and the second stereoscopic image group includes a plurality of second stereoscopic images having the same shape and arranged along the traveling direction. The display control means arranges the plurality of second stereoscopic images such that the intervals between them are relatively narrowed from the front side to the back side when viewed from the driver and the size of the second stereoscopic images is relatively decreased, and changes the color of at least a part of the displayed plurality of first stereoscopic images arranged on the back side when viewed from the driver.

In order to achieve the above object, a vehicle display device according to the present invention,A vehicular display device for projecting a display image in front of a driver of a vehicle and displaying the display image superimposed on an actual landscape in front of the vehicle, comprising route information acquisition means for acquiring route information from the current position of the vehicle to a destination, and display control means for displaying, based on the route information, a first group of stereoscopic images indicating the traveling direction of the vehicle on the own lane extending at least from the front side to the back side when viewed from the driver, wherein the first group of stereoscopic images has the same shape, and the The display control means comprises a plurality of first stereoscopic images arranged along the traveling direction, and the display control means displays the plurality of first stereoscopic images so that the distance between them becomes relatively narrow from the front side to the back side when viewed from the driver, and the size is relatively small,Hide the first stereoscopic image group according to the lane change of the own vehiclecharacterized by.

Advantageous Effects of Invention According to the vehicle display device of the present invention, it is possible to provide an intuitive and easy-to-understand display for the driver.

FIG. 1 is a schematic diagram showing a schematic configuration of a vehicle equipped with a vehicle display device according to an embodiment. FIG. 2 is a block diagram showing a schematic configuration of the vehicle display device according to the embodiment. FIG. 3 is a flowchart showing an operation example of the vehicle display device according to the embodiment. FIG. 4 is a schematic diagram showing a display example of the vehicular display device according to the embodiment when the vehicle is traveling straight. FIG. 5 is a schematic diagram showing a display example of the vehicle display device according to the embodiment when turning left. FIG. 6 is a schematic diagram showing a display example when there is an obstacle in front of the vehicle display device according to the embodiment. FIG. 7 is a schematic diagram showing a display example of the vehicle display device according to the embodiment when changing lanes. FIG. 8 is a schematic diagram showing a display example after a lane change on the vehicle display device according to the embodiment.

A vehicle display device according to an embodiment of the present invention will be described in detail below with reference to the drawings. In addition, this invention is not limited by embodiment shown below. In addition, components in the following embodiments include components that can be easily replaced by those skilled in the art, or components that are substantially the same. In addition, various omissions, replacements, and modifications can be made to the constituent elements in the following embodiments without departing from the scope of the invention.

[Embodiment]
A vehicle display device according to an embodiment will be described. FIG. 1 is a schematic diagram showing a schematic configuration of a vehicle equipped with a vehicle display device according to an embodiment. FIG. 2 is a block diagram showing a schematic configuration of the vehicle display device according to the embodiment. FIG. 3 is a flowchart showing an operation example of the vehicle display device according to the embodiment. FIG. 4 is a schematic diagram showing a display example of the vehicular display device according to the embodiment when the vehicle is traveling straight. FIG. 5 is a schematic diagram showing a display example of the vehicle display device according to the embodiment when turning left. FIG. 6 is a schematic diagram showing a display example when there is an obstacle in front of the vehicle display device according to the embodiment. FIG. 7 is a schematic diagram showing a display example of the vehicle display device according to the embodiment when changing lanes. FIG. 8 is a schematic diagram showing a display example after a lane change on the vehicle display device according to the embodiment.

In the following description, the height direction of a vehicle equipped with a vehicle display device is referred to as "vehicle height direction" or "vertical direction", the front-rear direction is referred to as "vehicle front-rear direction", and the vehicle width direction is referred to as "vehicle width direction".

A vehicle display device 1 according to the present embodiment is mounted in a vehicle 100 such as an automobile, for example. The vehicle display device 1 projects a display image onto the display range 41 (FIG. 4) of the windshield 104 in front of the driver D of the vehicle 100, and superimposes the display image on the actual scenery in front of the vehicle. A vehicle display device 1 of this embodiment includes a vehicle front camera 2, a driver's camera 3, and a device body 4 (FIG. 1).

A display range 41 is a range in which a display image is projected onto the windshield 104 . The display range 41 of this embodiment is set to match the actual scenery. For example, the display range 41 is set so that the upper side in the vertical direction does not exceed the horizon 43 of the actual scenery, and the lower side does not exceed the lower end of the windshield 104 . In addition, the display range 41 is set so as to include at least the own lane 21 extending forward from the vehicle 100 and the adjacent lane 22 adjacent to the own lane 21 in the vehicle width direction.

The windshield 104 is translucent and reflects the display light L incident from the vehicle display device 1 toward the driver's D eye point EP. The eye point EP is the viewpoint position of the driver D seated in the driver's seat 106 . The driver D can visually recognize the display image projected on the windshield 104 as a virtual image S existing in front of the vehicle 100 in the traveling direction. The display images of this embodiment are, for example, the own vehicle, the first stereoscopic image group 31 (FIGS. 4, 6 and 7), 33 (FIG. 5) and the second stereoscopic image group 35 (FIGS. 7 and 8).

The first stereoscopic image groups 31 and 33 and the second stereoscopic image group 35 indicate the traveling direction of the own vehicle (vehicle 100) based on the route information from the current location of the own vehicle (vehicle 100) to the destination. For example, the first stereoscopic image group 31 indicates that the vehicle is traveling straight ahead. Also, the first stereoscopic image group 33 indicates that the traveling direction of the host vehicle is left turn (or right turn). The second stereoscopic image group 35 indicates the course change destination of the own vehicle. The route information is obtained, for example, from the navigation device 20 (FIG. 2) mounted on the vehicle 100, and indicates the traveling direction of the own vehicle. The first stereoscopic image groups 31 and 33 and the second stereoscopic image group 35 may be deformed into shapes based on the shapes of colored lines (including white solid lines, white broken lines, yellow solid lines, etc.) drawn on the road, for example.

The vehicle front camera 2 is an example of front image acquisition means, and acquires a front image by continuously capturing the actual scenery in front of the vehicle through the windshield 104 . The vehicle front camera 2 is arranged on the roof 103 and the rearview mirror (not shown) in the interior of the vehicle 100 (FIG. 1). The vehicle front camera 2 acquires a forward image by capturing, for example, a moving image of the actual scenery in front of the vehicle. That is, the front image is, for example, a still image obtained from a moving image captured by the vehicle front camera 2 . The vehicle front camera 2 is electrically connected to the device body 4 and sequentially outputs forward images to the device body 4 . Note that the vehicle front camera 2 may output the captured moving image to the device main body 4 as it is.

The driver's camera 3 is arranged in the vehicle interior of the vehicle 100, and continuously captures the face of the driver D to obtain the driver's image. The driver's camera 3 is arranged, for example, above the steering column 105 in the passenger compartment and behind the steering wheel 101 as viewed from the driver D. As shown in FIG. The driver camera 3 captures a moving image of the driver D, for example, to obtain a driver image. That is, the driver image is, for example, a still image of the face of the driver D obtained from the moving image captured by the driver camera 3 . The driver camera 3 is electrically connected to the device main body 4 and sequentially outputs driver images to the device main body 4 . Note that the driver's camera 3 may output the captured moving image to the device main body 4 as it is.

The device body 4 projects a display image onto the windshield 104 . The device body 4 is arranged, for example, inside an instrument panel 102 of a vehicle 100 (FIG. 1). An upper surface of the instrument panel 102 is provided with an opening 102a. The device main body 4 projects a display image by irradiating the display light L toward the windshield 104 through the opening 102a. The apparatus main body 4 in this embodiment includes an image analysis section 10, an image projection section 11, and a control section 12, as shown in FIG. The image analysis unit 10 and the control unit 12 are parts that function on a microcontroller having, for example, a CPU (Central Processing Unit), memory, various interfaces, and the like. The control unit 12 is connected to a navigation device 20 mounted on the vehicle 100 .

The navigation device 20 is a so-called car navigation system, and provides the driver D of the vehicle 100 with detailed map information about the position of the vehicle 100 and its surroundings, route information to a destination, and the like. The navigation device 20 acquires the position of the own vehicle based on information from GPS (Global Positioning System) satellites. In addition, the navigation device 20 reads out route information and the like from an internal memory (not shown) or acquires it from the outside through wireless communication. The navigation device 20 outputs the route information to the control unit 12 in response to the route information acquisition request from the control unit 12 .

The image analysis unit 10 is an example of lane detection means, and detects the positions of a pair of white lines 21a and 21b sandwiching the own lane 21 extending forward from the own vehicle based on the front image input from the vehicle front camera 2 (Fig. 4). The positions of the white lines 21a and 21b are represented, for example, by coordinates on the plane set in the forward image. Own lane 21 is an area sandwiched between a pair of white lines 21 a and 21 b extending forward of vehicle 100 in the front image. Therefore, own lane 21 is identified by the positions of white lines 21a and 21b. Further, the image analysis unit 10 detects the position of an adjacent lane 22 adjacent to the own lane 21 extending forward from the own vehicle side from each input forward image (FIG. 4). The image analysis unit 10 outputs the positional information of the detected white lines 21 a and 21 b and the positional information of the adjacent lane 22 to the control unit 12 .

The image analysis unit 10 is an example of obstacle detection means, and detects the presence or absence of an obstacle 25 on the own lane 21 based on each front image input from the vehicle front camera 2, and detects the position of the obstacle 25 when the obstacle 25 is detected (FIG. 6). The obstacle 25 includes, for example, a vehicle (preceding vehicle) traveling on the own lane 21 in front of the own vehicle, a parked vehicle, and a person crossing the roadway. The position of the obstacle 25 is represented, for example, by coordinates on the plane set in the forward image. The image analysis unit 10 outputs position information of the detected obstacle 25 to the control unit 12 . Note that the image analysis unit 10 may be configured to detect the position information of the obstacle 25 using an advanced driver assistance system.

The image analysis unit 10 is an example of eyepoint EP detection means, and detects the eyepoint EP of the driver D based on the driver image input from the driver camera 3 . The eyepoint EP is represented, for example, by three-dimensional orthogonal coordinates set on the vehicle 100 . The orthogonal coordinates indicating the eye point EP include, for example, the width direction of the vehicle 100, the height direction of the vehicle, and the front-rear direction of the vehicle. The image analysis unit 10 outputs position information of the detected eyepoint EP to the control unit 12 .

The image projection unit 11 is an example of image projection means, and projects a display image input from the control unit 12 onto the windshield 104 . The image projection unit 11 includes a display (not shown) and an optical system 14 (FIG. 1). The display includes, for example, a liquid crystal display (not shown) and a backlight. The liquid crystal display section is composed of, for example, a TFT-LCD (Thin Film Transistor-Liquid Crystal Display) or the like. The backlight emits light from the rear side of the liquid crystal display section and projects an image displayed on the liquid crystal display section toward the optical system 14 . The optical system 14 reflects the display image emitted from the display toward the windshield 104 . The image reflected by the optical system 14 is projected toward the driver D by the windshield 104 .

The control unit 12 is an example of display control means, and causes the image projection unit 11 to display the first stereoscopic image groups 31 and 33 on the own lane 21 extending from the near side to the far side when viewed from the driver D based on the route information acquired from the navigation device 20. Also, the control unit 12 causes the image projection unit 11 to display the second stereoscopic image group 35 on the lane 22 adjacent to the own lane 21 based on the route information acquired from the navigation device 20 . The control unit 12 displays the first stereoscopic image group 31, 33 and the second stereoscopic image group 35 in the display range 41 of the windshield 104 based on the input positional information of the white lines 21a, 21b, the positional information of the adjacent lane 22, the positional information of the obstacle 25, the positional information of the eye point EP, and the like.

The first stereoscopic image group 31 is displayed on the own lane 21 extending from the front side to the back side when viewed from the driver D. FIG. The first stereoscopic image group 31 is composed of a plurality of first stereoscopic images 34 that have the same shape and are arranged along the traveling direction of the host vehicle (FIG. 4). A control part 12 arranges a plurality of first stereoscopic images 34 so that the intervals are relatively narrowed from the front side to the back side when viewed from the driver D, and causes the image projection part 11 to display the images so that the size is relatively small. For example, the intervals X1, X2, X3, and X4 between the plurality of first stereoscopic images 34 shown in FIG. 4 are X1>X2>X3>X4. For example, the sizes l1 and l2 of the first stereoscopic images 34 shown in FIG. 4 are, for example, the diameters of the respective first stereoscopic images 34, and l1>l2. The control unit 12 causes the image projection unit 11 to display the first stereoscopic image group 31 so that the first stereoscopic image group 31 moves from the back side to the front side when viewed from the driver D. A control part 12 detects from a speedometer or the like that the own vehicle is in a running state, moves a plurality of first stereoscopic images to the front side, sequentially erases the display of the first stereoscopic image 34 on the frontmost side among the plurality of first stereoscopic images 34, and sequentially displays a new first stereoscopic image 34 on the innermost side.

The first stereoscopic image group 33 is displayed on the own lane 21 extending from the front to the back when viewed from the driver D, and the right and left turn lanes 27 intersecting the own lane 21 . The first stereoscopic image group 33 is composed of a plurality of first stereoscopic images 34 that have the same shape and are arranged along the traveling direction of the host vehicle (FIG. 5). A control part 12 arranges a plurality of first stereoscopic images 34 in a region where a display image is superimposed on an own lane 21 so that the intervals become relatively narrow from the near side to the far side when viewed from the driver D, and causes the image projecting part 11 to display the images so that the size becomes relatively small. In addition, the control part 12 arranges the display images so that the intervals in the vehicle width direction when viewed from the driver D are constant in the area where the display images are superimposed on the right and left turn lanes 27, and causes the image projection part 11 to display the images so that the sizes are the same. For example, in the right/left turn lane 27 shown in FIG. 5, the intervals Y1, Y2, and Y3 between the plurality of first stereoscopic images 34 are Y1=Y2=Y3. For example, the sizes l1 and l2 of the first stereoscopic images 34 shown in FIG. 5 are, for example, the diameters of the respective first stereoscopic images 34, and l1=l2.

The control unit 12 causes the image projection unit 11 to display the first stereoscopic image group 33 so as to move from the back side toward the front side when viewed from the driver D in the area where the display image is superimposed on the own lane 21 . A control part 12 detects from a speedometer or the like that the own vehicle is in a running state, moves a plurality of first stereoscopic images to the front side, sequentially erases the display of the first stereoscopic image 34 on the frontmost side among the plurality of first stereoscopic images 34, and sequentially displays a new first stereoscopic image 34 on the innermost side.

The control unit 12 changes the display color of the plurality of first stereoscopic images 34 arranged in the rear region B among the plurality of first stereoscopic images 34 arranged in the front region F and the rear region B as viewed from the driver D and causes them to be displayed (FIG. 6). The display colors of the plurality of first stereoscopic images 34 arranged in the back side area B are preferably colors different from the display colors of the plurality of first stereoscopic images 34 arranged in the front side area F, for example, bright colors. The display color of the plurality of first stereoscopic images 34 arranged in the back region B is preferably a color that calls the driver D's attention. Further, the plurality of first stereoscopic images 34 arranged in the back region B may be configured to blink with respect to the plurality of first stereoscopic images 34 arranged in the front region F.

When an obstacle 25 is detected and the distance between the host vehicle and the obstacle 25 becomes equal to or less than a threshold value, the control unit 12 performs at least one of changing the color of the plurality of first stereoscopic images 34 arranged in the depth side region B among the plurality of first stereoscopic images 34 arranged in the front side region F and the depth side region B when viewed from the driver D, or narrowing the interval between the plurality of first stereoscopic images 34 disposed in the depth side region B. The distance between the plurality of first stereoscopic images 34 narrows, for example, when the distance between the host vehicle and the obstacle 25 becomes equal to or less than a threshold. Furthermore, the control unit 12 increases the depth area B as the distance between the vehicle and the obstacle 25 becomes shorter.

When the adjacent lane 22 is detected and the vehicle needs to change lanes based on the route information, the control unit 12 causes the image projection unit 11 to display a second stereoscopic image group 35 indicating the traveling direction of the vehicle on the adjacent lane 22. Conditions that require a lane change include, for example, the presence of an obstacle 25 on the own lane 21 in front of the own vehicle, the case of turning right at an intersection, and the like. Further, when the obstacle 25 is detected and the adjacent lane 22 is detected, the control unit 12 causes the image projection unit 11 to display the second stereoscopic image group 35 on the adjacent lane 22 . Like the first stereoscopic image group 31, the second stereoscopic image group 35 is composed of a plurality of second stereoscopic images 36 that have the same shape and are arranged along the traveling direction (FIG. 7). Like the first stereoscopic image group 31, the control part 12 arranges the plurality of second stereoscopic images 36 so that the intervals become relatively narrow from the front side to the back side when viewed from the driver D, and causes the image projection part 11 to display the images so that the size becomes relatively small. When an obstacle 25 is detected and an adjacent lane 22 is detected, a control part 12 changes the color of at least a part of the plurality of displayed first stereoscopic images 34 arranged on the far side when viewed from the driver D. The control unit 12, for example, among the plurality of first stereoscopic images 34 arranged in the front region F and the rear region B when viewed from the driver D, changes the display color of the plurality of first stereoscopic images 34 arranged in the rear region B and causes them to be displayed (FIG. 6). The second stereoscopic image group 35 is displayed as the first stereoscopic image group 31 after the host vehicle changes lanes (FIG. 8). On the other hand, the first stereoscopic image group 31 superimposed and displayed on the own lane 21 before the own vehicle changes lanes disappears according to the lane change of the own vehicle.

Next, the operation of the vehicle display device 1 according to this embodiment will be described with reference to FIG. This process is executed when the vehicle 100 is started (for example, the ignition switch is turned on) and ends when the vehicle 100 is stopped (for example, the ignition switch is turned off), but is not limited to this. Moreover, each step shown in the drawing is not limited to the order shown in the drawing.

First, in step S<b>1 , the image analysis unit 10 acquires a front image from the vehicle front camera 2 .

Next, in step S2, the image analysis unit 10 detects the positions of the own lane 21 and the adjacent lane 22 based on the acquired forward image. Further, when the obstacle 25 is detected based on the acquired front image, the image analysis unit 10 detects the position of the obstacle 25 .

Next, in step S3, the control unit 12 acquires route information from the navigation device 20 to the destination.

Next, in step S4, the control unit 12 generates a display image based on the route information acquired from the navigation device 20 in step S3. This display image includes first stereoscopic image groups 31 and 33 and second stereoscopic image group 35 .

Next, in step S<b>5 , the control unit 12 acquires the driver's image from the driver's camera 3 . The image analysis unit 10 acquires the position of the eye point EP of the driver D based on the acquired driver image.

Next, in step S6, the control unit 12 adjusts the display position of the display image based on the position information of the own lane 21 and the adjacent lane 22 obtained in step S2 and the position information of the eyepoint EP obtained in step S5. At this time, the control unit 12 corrects the distortion of the display image projected onto the windshield 104, and causes the image projection unit 11 to superimpose and display the image on the actual scenery.

Next, in step S7, the control section 12 controls the image projection section 11 to change the display of the display image. As described above, the control unit 12 causes the image projection unit 11 to display the first stereoscopic image group 33 so that the first stereoscopic image group 33 moves from the back side to the front side when viewed from the driver D. A control part 12 detects from a speedometer or the like that the own vehicle is in a running state, moves a plurality of first stereoscopic images to the front side, sequentially erases the display of the first stereoscopic image 34 on the frontmost side among the plurality of first stereoscopic images 34, and sequentially displays a new first stereoscopic image 34 on the innermost side.

As described above, in the vehicle display device 1 according to the present embodiment, the control unit 12 causes the image projection unit 11 to display the first stereoscopic image group 31 indicating the traveling direction of the vehicle on the own lane 21 extending from the front side to the back side when viewed from the driver D based on the route information. The first stereoscopic image group 31 is composed of a plurality of first stereoscopic images 34 having the same shape and arranged along the traveling direction. A control part 12 arranges a plurality of first stereoscopic images 34 so that the intervals become relatively narrow from the front side to the back side when viewed from the driver D, and displays the images so that the size becomes relatively small.

With the above configuration, for example, the driver D can intuitively grasp the traveling direction of the own vehicle from the plurality of first stereoscopic images 34 having the same shape and arranged along the traveling direction. In addition, the plurality of first stereoscopic images 34 arranged so that the intervals become relatively narrow from the near side to the far side and displayed so as to be relatively small make it possible to eliminate a sense of incongruity when the display images are superimposed on the actual scenery. As a result, it is possible to provide an intuitive and easy-to-understand display for the driver D.

Further, in the vehicle display device 1 according to the present embodiment, when the control unit 12 detects the adjacent lane 22 and the vehicle needs to change lanes based on the route information, the adjacent lane 22 displays the second stereoscopic image group 35 indicating the traveling direction of the vehicle. The second stereoscopic image group 35 is composed of a plurality of second stereoscopic images 36 that have the same shape and are arranged along the traveling direction. A control part 12 arranges a plurality of second stereoscopic images 36 so that the intervals become relatively narrower from the front side toward the back side when viewed from the driver D, and displays them so that the size becomes relatively small. Further, the control unit 12 changes the color of the plurality of first stereoscopic images 34 arranged in the rear region B among the plurality of first stereoscopic images 34 arranged in the front region F and the rear region B when viewed from the driver D.

With the above configuration, for example, the driver D can visually confirm the second stereoscopic image group 35 displayed on the adjacent lane 22 in front of the vehicle, and can easily recognize the necessity of lane change. In addition, by changing the display color of the plurality of first stereoscopic images 34 arranged in the depth side area B among the plurality of first stereoscopic images 34 displayed on the own lane 21, it is possible to call attention to the driver D and encourage a smooth lane change.

Further, in the vehicular display device 1 according to the present embodiment, when the obstacle 25 is detected and the distance between the own vehicle and the obstacle 25 becomes equal to or less than the threshold value, the control unit 12 changes the color of the plurality of first stereoscopic images 34 arranged in the depth side region B among the plurality of first stereoscopic images 34 arranged in the front side region F and the depth side region B when viewed from the driver D, or adjusts the interval between the plurality of first stereoscopic images 34 arranged in the depth side region B. and narrowing, and the depth side area B is increased as the distance is shortened.

With the above configuration, for example, the driver D can notice that the own vehicle is approaching an obstacle according to the change in the interval between the plurality of first stereoscopic images 34 and the change in the display color, and can prompt the driver D to take action such as lane change. For example, when the own vehicle approaches the obstacle 25, the distance between the plurality of first stereoscopic images 34 narrows, so that the driver D can easily understand that the own vehicle is approaching the obstacle 25.例文帳に追加

Further, in the vehicle display device 1 according to the present embodiment, when the obstacle 25 is detected and the adjacent lane 22 is detected, the control unit 12 causes the adjacent lane 22 to display the second stereoscopic image group 35 indicating the traveling direction of the vehicle. The second stereoscopic image group 35 is composed of a plurality of second stereoscopic images 36 that have the same shape and are arranged along the traveling direction. A control part 12 arranges a plurality of second stereoscopic images 36 so that the interval becomes relatively narrow from the front side to the depth side when viewed from the driver D, and displays them so that the size becomes relatively small, and changes the color of at least a part of the displayed plurality of first stereoscopic images 34 arranged on the depth side when viewed from the driver D.

With the above configuration, for example, the driver D can visually confirm the second stereoscopic image group 35 displayed on the adjacent lane 22 in front of the vehicle, and can easily recognize the necessity of lane change. In addition, by changing the display color of a part of the plurality of first stereoscopic images 34 displayed on the own lane 21, which are arranged on the far side when viewed from the driver D, it is possible to call attention to the driver D and encourage smooth lane change.

In the above embodiment, it is assumed that the traffic environment of the vehicle 100 is left-hand traffic, but the present invention is not limited to this. For example, the present invention can be applied even when the adjacent lane 22 of the own lane 21 exists on the left side with respect to the traveling direction of the vehicle 100 .

Further, in the above-described embodiment, the driver's camera 3 and the vehicle front camera 2 are each connected to the device main body 4 by wire, but may be connected wirelessly. This eliminates the need for wiring work.

Also, in the above embodiment, the control unit 12 acquires the route information from the navigation device 20, but it is not limited to this. For example, the control unit 12 may be configured to acquire route information or the like from the outside through wireless communication.

Moreover, although the display range 41 is set in the above embodiment, the present invention is not limited to this.

1 vehicle display device 2 vehicle front camera 3 driver camera 4 device main body 10 image analysis unit 11 image projection unit 12 control unit 20 navigation device 21 own lane 21a, 21b white line 25 obstacle 27 right/left turn lane 31, 33 first stereoscopic image group 34 first stereoscopic image 35 second stereoscopic image group 36 second stereoscopic image 41 display range 43 Horizon 100 Vehicle 104 Windshield D Driver EP Eyepoint S Virtual image

Claims (4)

A vehicular display device for projecting a display image in front of a driver of a vehicle and displaying the display image superimposed on a real landscape in front of the vehicle,
route information acquisition means for acquiring route information from the current position of the vehicle to a destination;
display control means for displaying a first stereoscopic image group indicating the traveling direction of the own vehicle on the own lane extending at least from the near side to the far side when viewed from the driver, based on the route information;
front image acquisition means for acquiring a front image by imaging the actual scenery in front of the vehicle;
lane detection means for detecting an adjacent lane adjacent to the own lane based on the forward image;
with
The first stereoscopic image group is composed of a plurality of first stereoscopic images having the same shape and arranged along the traveling direction,
The display control means is
arranging the plurality of first stereoscopic images so that the intervals become relatively narrow from the front side toward the back side when viewed from the driver, and displaying the images so that the size becomes relatively small;
when the adjacent lane is detected by the lane detection means and the lane of the vehicle needs to be changed based on the route information, a second stereoscopic image group indicating the traveling direction of the vehicle is displayed in the adjacent lane;
The second stereoscopic image group is composed of a plurality of second stereoscopic images having the same shape and arranged along the traveling direction,
The display control means is
arranging the plurality of second stereoscopic images so that the intervals become relatively narrow from the front side toward the back side when viewed from the driver, and displaying the images so that the size becomes relatively small;
Among the plurality of first stereoscopic images arranged in the near side area and the far side area when viewed from the driver, the colors of the plurality of first stereoscopic images arranged in the far side area are changed.
A vehicle display device characterized by: A vehicular display device for projecting a display image in front of a driver of a vehicle and displaying the display image superimposed on a real landscape in front of the vehicle,
route information acquisition means for acquiring route information from the current position of the vehicle to a destination;
display control means for displaying a first stereoscopic image group indicating the traveling direction of the own vehicle on the own lane extending at least from the near side to the far side when viewed from the driver, based on the route information;
front image acquisition means for acquiring a front image by imaging the actual scenery in front of the vehicle;
an obstacle detection means for detecting an obstacle in front of the own lane based on the forward image ;
The first stereoscopic image group is composed of a plurality of first stereoscopic images having the same shape and arranged along the traveling direction,
The display control means is
arranging the plurality of first stereoscopic images so that the intervals become relatively narrow from the front side toward the back side when viewed from the driver, and displaying the images so that the size becomes relatively small;
When the obstacle is detected by the obstacle detection means and the distance between the vehicle and the obstacle becomes equal to or less than a threshold value, at least one of changing the color of the plurality of first stereoscopic images arranged in the back region among the plurality of first stereoscopic images arranged in the front side region and the back side region viewed from the driver, or narrowing the interval between the plurality of first stereoscopic images arranged in the back region,
Increasing the depth area as the distance decreases
A vehicle display device characterized by : Further comprising lane detection means for detecting an adjacent lane adjacent to the own lane based on the forward image,
The display control means is
when the obstacle is detected by the obstacle detection means and the adjacent lane is detected by the lane detection means, displaying a second stereoscopic image group indicating the traveling direction of the vehicle in the adjacent lane;
The second stereoscopic image group is composed of a plurality of second stereoscopic images having the same shape and arranged along the traveling direction,
The display control means is
arranging the plurality of second stereoscopic images so that the intervals become relatively narrow from the front side toward the back side when viewed from the driver, and displaying the images so that the size becomes relatively small;
The vehicular display device according to claim 2 , wherein, among the plurality of displayed first stereoscopic images, the color of at least a portion arranged on the far side when viewed from the driver is changed. A vehicular display device for projecting a display image in front of a driver of a vehicle and displaying the display image superimposed on a real landscape in front of the vehicle,
route information acquisition means for acquiring route information from the current position of the vehicle to a destination;
display control means for displaying a first stereoscopic image group indicating the traveling direction of the own vehicle on the own lane extending at least from the near side to the far side when viewed from the driver, based on the route information;
with
The first stereoscopic image group is composed of a plurality of first stereoscopic images having the same shape and arranged along the traveling direction,
The display control means is
arranging the plurality of first stereoscopic images so that the intervals become relatively narrow from the front side toward the back side when viewed from the driver, and displaying the images so that the size becomes relatively small;
Hide the first stereoscopic image group according to the lane change of the own vehicle
A vehicle display device characterized by :

Images