JP2019075687A - Display device for vehicle - Google Patents

Abstract

To provide a display device for a vehicle capable of displaying an image obtained by imaging the periphery of a vehicle without giving troublesomeness to a driver and also changing a display angle range in response to a range which the driver wants to confirm.SOLUTION: A display device for a vehicle is used in a vehicle C in order to display images captured by out-vehicle cameras 2 for imaging the periphery of the vehicle C. The device includes: display units 4 for partially displaying images captured by the out-vehicle cameras 2; an in-vehicle image processing unit 6 for detecting positions of eyes of a driver who is driving the vehicle C; a visual recognition time measurement unit 71 for measuring a visual recognition time when a driver is visually recognizing the display unit 4 on the basis of positions of the eyes of a driver; and a range determination unit 72 for moving a display angle range to be displayed in the display unit 4 from images captured by the out-vehicle cameras 2 in response to a movement of positions of the eyes of a driver on the basis of a fact that a visual recognition time exceeds a predetermined visual recognition time threshold.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device for a vehicle, and more particularly to a display device for a vehicle that displays an image captured by a camera.

  There is known a technique of capturing an image around the vehicle with a camera mounted on the vehicle and displaying the image on a display device in a vehicle cabin. Patent Document 1 includes a camera for imaging the periphery of a vehicle, and a display unit for displaying a rearview mirror-like image corresponding to an image projected on a rearview mirror of the vehicle based on an image captured by the camera. An equipped system is disclosed. The rearview mirror is a general term for a rearview mirror and a side mirror.

  As for the room mirror and the side mirror, when the eye position of the driver looking at those mirrors changes, the range viewed by the driver changes. Therefore, the system disclosed in Patent Document 1 further detects a change in the relative relationship of the viewpoint position of the driver with respect to the display surface of the display unit, and causes the display unit to display it according to the change in the relative relationship. The range of the image is shifted. Thus, the driver can display an image, which has not been displayed on the display unit before the movement, on the display unit by moving the position and the direction of the eyes, as in the conventional mirror.

Patent No. 5310602 gazette

  While the driver is driving the vehicle, the position of the driver's eyes is often moving. Therefore, if the range of the image displayed on the display unit is sequentially shifted according to the change in the position of the eye of the driver, the image displayed on the display unit will frequently move, giving the driver a bother. Has the problem of

  The problem is not only when using the image around the vehicle taken with the camera in place of the image taken with the rearview mirror, but also displaying on the display an image that is not an image seen with the rearview mirror, such as an image taken with the front camera If it does, it will occur similarly.

  The present disclosure has been made based on the above circumstances, and an object of the present disclosure is to display an image obtained by imaging the periphery of a vehicle while making it difficult for the driver to bother the driver, and to the range that the driver wants to check It is providing the display apparatus for vehicles which can change a display angle range according to it.

  The above object is achieved by a combination of the features of the independent claims, and the subclaims define further advantageous embodiments. The reference numerals in parentheses described in the claims indicate the correspondence with specific means described in the embodiments described later as one aspect, and do not limit the disclosed technical scope.

One disclosure for achieving the above object is
It is a display device for vehicles used by vehicles, in order to display the picture which the camera (2) outside the vehicle which picturizes the circumference of vehicles (C) picturized,
A display unit (4) for displaying a part of the image captured by the camera outside the vehicle;
A detection unit (6) for detecting the position of eyes of a driver (11) driving the vehicle;
A visual recognition time measurement unit (71) for measuring a visual recognition time which is a time when the driver visually recognizes the display unit based on the position of the eye of the driver detected by the detection unit;
The display angle range (10) displayed on the display unit is moved from the image captured by the camera outside the vehicle according to the movement of the eye position of the driver based on the fact that the viewing time exceeds the preset viewing time threshold. And a range determination unit (72).

  In this vehicle display device, the display angle range displayed on the display unit does not change in the imaging angle range imaged by the camera outside the vehicle unless the display unit is kept looking longer than the viewing time threshold. That is, even if it is not seen, the display angle range does not move simply by changing the position of the eyes, and the display angle range moves only by looking at the display section for a very short time. Nor. Therefore, it is possible to suppress that the image displayed on the display unit frequently moves and the driver is bothered.

  On the other hand, if the viewing time threshold is exceeded and the display unit continues to be viewed, the display angle range moves according to the movement of the eye position of the driver. Therefore, when it is desired to check the range not displayed on the display unit, the display angle range can be changed by a natural operation.

FIG. 2 is a block diagram showing the configuration of the in-vehicle display device 1; It is a figure which shows the imaging angle range 15F which the front camera 2F images. It is a figure which shows the imaging angle range 15L of the left back camera 2L. FIG. 6 is a diagram showing a specific arrangement of the display unit 4; It is a figure explaining the relationship between the position of eyes of driver 11, and display angle range 10F. It is a figure which shows the display angle range 10F when the position of the eyes of the driver 11 moves to the left from FIG. It is a figure which shows the state rotated in the direction which the display angle range 10L moves to the right from FIG. It is a figure which shows the state rotated in the direction which the display angle range 10L moves to the left from FIG. It is a figure explaining the relation between the position in the perpendicular plane of display angle range 10F to imaging angle range 15F, and the position of the eye of driver 11. FIG. It is a figure which shows the display angle range 10F when the position of the eyes of the driver 11 moves upward from FIG. It is a flowchart which shows the process which determines whether it transfers to a range movable mode. It is a flowchart which shows the process of the range movable mode performed in 1st Embodiment. It is a figure explaining the reference line Ls set by S11 of FIG. It is a figure explaining eye direction line Le, change angle theta 1, and rotation angle theta 2. It is a flowchart which shows the process performed instead of FIG. 12 in 2nd Embodiment. It is a flowchart which shows the process performed instead of FIG. 12 in 3rd Embodiment. It is a flowchart which shows the process performed instead of FIG. 12 in 4th Embodiment.

First Embodiment
Hereinafter, embodiments will be described based on the drawings. FIG. 1 is a block diagram showing the configuration of the in-vehicle display device 1. The on-vehicle display device 1 is a specific example of a display device for a vehicle. The in-vehicle display device 1 includes an out-of-vehicle camera 2, an out-of-vehicle image processing unit 3, a display unit 4, an in-vehicle camera 5, an in-vehicle image processing unit 6, and an angle of view calculation unit 7. The on-vehicle display device 1 is mounted on a vehicle C.

  The out-of-vehicle camera 2 is a camera for imaging the periphery of the vehicle C. The on-vehicle display device 1 includes, as the camera 2 outside the vehicle, a front camera 2F, a left rear camera 2L, and a right rear camera 2R. When the front camera 2F, the right rear camera 2R, and the left rear camera 2L are not distinguished from one another, they are referred to as the outside camera 2.

  The front camera 2F is attached to the front end face of the vehicle C, and images the front of the vehicle C. FIG. 2 shows an imaging angle range 15F captured by the front camera 2F. The front camera 2F of this embodiment includes a wide angle lens, and the imaging angle range 15F in the horizontal plane has a central angle of 180 degrees or more, for example, a central angle of about 200 degrees.

  The left rear camera 2L is a camera for imaging the left rear of the vehicle C. FIG. 3 shows an imaging angle range 15L of the left rear camera 2L. The attachment position of the left rear camera 2L is, for example, the lower surface of the left side mirror 8L of the vehicle C. The imaging angle range 15L is a range between the vehicle width direction line 9 passing through the left side mirror 8L and the left side surface of the vehicle C on the left side of the vehicle C.

  The right rear camera 2R is a camera for imaging the right rear of the vehicle C. The mounting position of the right rear camera 2R is, for example, the lower surface of the right side mirror 8R of the vehicle C. The imaging angle range of the right rear camera 2R is a range between the vehicle width direction line 9 passing through the right side mirror 8R and the right side surface of the vehicle C on the right side of the vehicle C.

  Each of the outside image processing unit 3, the inside image processing unit 6, and the angle of view calculation unit 7 is configured by a computer including a CPU, a ROM, a RAM, an I / O, and a bus line connecting these components. Can. The in-vehicle image processing unit 3, the in-vehicle image processing unit 6, and the view angle calculation unit 7 may be configured by separate computers, and one computer is an out-vehicle image processing unit 3, the in-vehicle image processing unit 6, the view angle Two or more functions of the calculation unit 7 may be realized. Further, some or all of the functions of the outside image processing unit 3, the in-vehicle image processing unit 6, and the angle of view calculation unit 7 may be realized using one or a plurality of ICs (in other words, hardware). You can also. The out-of-vehicle image processing unit 3 processes the image captured by the out-of-vehicle camera 2 and outputs the processed image to the display unit 4. The processing performed by the outside-of-vehicle image processing unit 3 includes processing for cutting out the display angle range 10 displayed on the display unit 4 from the image captured by the outside-vehicle camera 2 and displaying the image of the display angle range 10 on the display unit 4. Further, the processing performed by the external image processing unit 3 also includes processing such as brightness correction and conversion of the number of pixels. The angle-of-view range (ie, the display angle range 10) cut out from the image captured by the camera 2 outside the vehicle is instructed from the angle-of-view calculation unit 7. FIG. 2 also shows an example of a display angle range 10F cut out from an image captured by the front camera 2F. Further, FIG. 3 also shows an example of a display angle range 10L cut out from an image captured by the left rear camera 2L. When the display angle ranges 10F and 10L and the display angle range cut out from the image captured by the other camera 2 outside the vehicle are not distinguished, they are described as the display angle range 10.

  One or more display units 4 are provided at positions where the driver 11 (see FIG. 5) can visually recognize in the cabin of the vehicle C. FIG. 4 shows a specific arrangement of the display unit 4. In the present embodiment, as the display unit 4, the display unit 4C disposed at the center of the dashboard 12, the display unit 4F disposed at the front of the driver 11 in the dashboard 12, and the left end of the dashboard 12 And a display unit 4R disposed at the right end of the dashboard 12. When these are not distinguished, it describes as the display part 4.

  Various images are displayed on the display unit 4. For example, a part of the image captured by the right rear camera 2R is cut out and displayed on the display unit 4R. A part of the image captured by the left rear camera 2L is cut out and displayed on the display unit 4L. A part of the image captured by the front camera 2F is cut out and displayed on at least one of the display units 4C and 4F.

  The in-vehicle camera 5 is installed in the cabin of the vehicle C and captures an image including the face of the driver 11. The in-vehicle image processing unit 6 analyzes the image captured by the in-vehicle camera 5 to detect the eye position and the line of sight of the driver 11.

  The angle-of-view calculation unit 7 includes a visual recognition time measurement unit 71 and a range determination unit 72. The visual recognition time measurement unit 71 determines whether the driver 11 is looking at any display unit 4 based on the eye position detected by the in-vehicle image processing unit 6, the line of sight, and the position of the display unit 4. And the visual recognition time which is the time which the driver 11 continues looking at the same display part 4 is measured. The line of sight means the direction in which you are looking.

  The range determining unit 72 determines a display angle range 10 to be cut out from the image captured by the camera 2 outside the vehicle, and instructs the outside image processing unit 3 the determined display angle range 10. When the viewing time exceeds the viewing time threshold, the range determining unit 72 displays the display angle range 10 displayed on the display unit 4 among the images captured by the camera 2 outside the vehicle based on the change in the position of the eye of the driver 11 Process to change

  The direction in which the display angle range 10 is moved is opposite to the direction in which the eyes are moved. The correspondence between the display angle range 10 and the movement direction of the eye will be specifically described. 5 and 6 are diagrams for explaining the relationship between the eye position of the driver 11 and the display angle range 10F.

  In FIG. 5, the eye position of the driver 11 is a position facing the steering wheel 13. At this time, the angular center of the display angle range 10F is the front direction of the vehicle C, and the display angle range 10F is located at the center of the imaging angle range 15F of the front camera 2F.

  6, the eye position of the driver 11 is shifted leftward from the position of FIG. In the present embodiment, the display angle range 10F is shifted to the right, that is, the position of the eyes of the driver 11 with the front camera 2F as the rotation center, corresponding to the shift of the eye position of the driver 11 to the left. Rotate in the opposite direction to the direction.

  By this control, the driver 11 causes the display unit 4 to display and confirm the range which has not been displayed on the display unit 4 by the same operation as when trying to look at an object in a blind spot with one's own eye. Can.

  The display angle range 10 of the image displayed on the other display unit 4 similarly changes in accordance with the movement of the eye position of the driver 11. 7 and 8 show changes in the display angle range 10L. In FIG. 7, the position of the eyes of the driver 11 is relative to the position of the eyes of the driver 11 when the image in the display angle range 10L shown in FIG. 3 is displayed on the display unit 4L. A display angle range 10L when moved is shown. The display angle range 10L rotates in the direction of moving to the right, which is the direction opposite to the movement direction of the eye position of the driver 11.

  In FIG. 8, the position of the eye of the driver 11 is relatively rightward with respect to the position of the eye of the driver 11 when the image in the display angle range 10L shown in FIG. 3 is displayed on the display unit 4L. A display angle range 10L when moved is shown. The display angle range 10L rotates in the direction of moving to the left, which is the direction opposite to the moving direction of the eye position of the driver 11.

  In FIGS. 5-8, the state which rotationally moves the display angle range 10 to the left-right direction in a water surface was demonstrated. However, even when the position of the eye of the driver 11 moves in the vertical direction, the range determining unit 72 rotates the display angle range 10 so as to move in the direction opposite to the movement direction of the eye.

  9 and 10 are diagrams for explaining the relationship between the position in the vertical plane of the display angle range 10F and the position of the eye of the driver 11 with respect to the imaging angle range 15F of the front camera 2F. In the state of FIG. 9, the display angle range 10F is located at the center of the imaging angle range 15F.

  FIG. 10 shows the display angle range 10 when the eye position of the driver 11 moves upward from the position shown in FIG. The position z2 in the height direction of the eye of the driver 11 shown in FIG. 10 is moved upward from the position z1 in the height direction of the eye of the driver 11 in FIG. The display angle range 10F rotates about the front camera 2F as a rotation center in the direction opposite to the movement direction of the position of the eye, that is, downward.

  The range determination unit 72 also rotationally moves the display angle range 10 of the other display unit 4 in the direction opposite to the movement direction of the eyes according to the movement of the eye position of the driver 11 in the vertical and horizontal directions.

  However, if the display angle range 10 of the image displayed on the display unit 4 changes frequently, the driver 11 may be annoyed.

  Therefore, the angle-of-view calculation unit 7 of the present embodiment defines a condition for shifting to a mode (hereinafter, range movable mode) in which the display angle range 10 is moved according to the movement of the eye position of the driver 11. The conditions for shifting to the range movable mode will be described with reference to FIG.

  In FIG. 11, the visual recognition time measuring unit 71 executes S1 and S2, and the range determining unit 72 executes the remaining processing. The process shown in FIG. 11 is periodically executed when the range movable mode is not set.

  Step (hereinafter, step is omitted) In S1, the detection result of the eye position and sight line of the driver 11 is acquired from the in-vehicle image processing unit 6, and it is determined whether the driver 11 is looking at any display unit 4 Do. If this judgment is YES, it will progress to S2, and if it is NO, processing shown in Drawing 11 will be ended. During operation, various vibrations are transmitted to the driver. Therefore, even if the driver continues to look at the display unit 4, it is also assumed that the line of sight temporarily deviates from the display unit 4. Therefore, it is determined that a slight time deviation of the line of sight or a slight amount of deviation of the line of sight continues to look at the display unit 4. It is set in advance how much time and amount of line of sight deviation is allowed.

  In S2, the visual recognition time, which is the time when the driver 11 continues to look at the same display unit 4, is updated. In continuing S3, it is judged whether the visual recognition time updated by S2 exceeded the visual recognition time threshold value. If the viewing time threshold is too short, the display angle range 10 frequently moves to give a bother to the driver 11, while if it is too long, the display angle range does not continue to look at the same display unit 4 for a long time. 10 can not move. In consideration of this, the visual recognition time threshold is set based on experiments. If the determination in S3 is NO, the process returns to S1.

  In S4, a reference position of the eye of the driver 11 is set to determine S5 and S6 to be described later. The reference position is, for example, the position of the latest eye of the driver 11 when the determination in S3 is YES. However, instead of this, the eye position of the driver 11 when the driver 11 starts looking at the display unit 4 may be set as the reference position.

  In S5, in a state where the position of the eye of the driver 11 moves while the driver 11 keeps looking at the same display unit 4, whether the movement amount of the position of the eye of the driver 11 with respect to the reference position exceeds the distance threshold to decide. The distance threshold is also a value determined based on experiments in the same viewpoint as the viewing time threshold. If the determination in S5 is YES, the process proceeds to S6.

  In S6, it is determined whether the movement time in which the position of the eye of the driver 11 continues to move in a fixed direction exceeds the movement time threshold while the driver 11 keeps looking at the same display unit 4. The travel time threshold is also a value determined based on experiments in the same viewpoint as the viewing time threshold. If the determination in S6 is NO, the process proceeds to S7. Also, if the determination in S5 is NO, the process proceeds to S7.

  In S7, the driver 11 determines whether or not the same display unit 4 is continuously viewed. If this judgment is YES, it will return to S5, and if it is NO, processing shown in Drawing 11 will be ended.

  If the determination in S6 is YES, the process proceeds to S8. At S8, the mode is shifted to the range movable mode. In the range movable mode, the range determining unit 72 periodically executes the process shown in FIG.

  In FIG. 12, in S11, a reference line Ls is set. The reference line Ls is a line directed to the eye position of the driver 11 with the predetermined position (for example, the screen center) of the display unit 4 viewed by the driver 11 as a base end. The eye position of the driver 11 used to create the reference line Ls is the eye position of the latest driver 11. However, the present invention is not limited to this, and the position set in advance without using the driver 11 may be used as the position of the eye of the driver 11 used to create the reference line Ls. The eye position of the driver 11 used to create the reference line Ls may be the center position of the seat on which the driver is seated only in the vehicle width direction, and the height direction may be the eye position of the driver 11. The reference line Ls is illustrated in FIG. 13 by taking the display unit 4C as an example.

  In S12, the eye position of the driver 11 is acquired from the in-vehicle image processing unit 6. In S13, the eye direction line Le is determined. The eye direction line Le is a line connecting the eye positions of the driver 11 acquired in S12 from the base end of the reference line Ls. The eye direction line Le is illustrated in FIG. FIG. 14 also shows the change angle θ1 determined in S14 and the rotation angle θ2 determined in S15.

  In S14, the change angle θ1 is determined. The change angle θ1 is the angle between the reference line Ls and the eye direction line Le. In S15, the rotation angle θ2 of the display angle range 10 is determined. In the first embodiment, the change angle θ1 is directly set as the rotation angle θ2. In S16, the display angle range 10 is rotated by the rotation angle θ2 determined in S15.

  FIG. 14 shows a state in which the display angle range 10F is rotationally moved downward by θ2 from the display angle range 10F shown in FIG.

  In S17, it is determined whether a condition for ending the range movable mode is satisfied. Various conditions can be set. For example, the stop condition may be that the eye position has stopped. Further, the end condition may be that the driver 11 has moved the line of sight from the display unit 4. Moreover, it can also be made into completion condition that having made it rotate and move more than fixed angle. If the determination in S17 is NO, the process returns to S12, and if YES, the process in FIG. 12 is ended.

  As described above, in the first embodiment described above, the in-vehicle image processing unit 6 corresponds to a detection unit, and the front camera 2F corresponds to a front camera.

Summary of First Embodiment
As described above, in the first embodiment described above, the display angle range displayed on the display unit 4 in the imaging angle range 15 captured by the camera 2 outside the vehicle if the driver 11 does not keep looking at the display unit 4 longer than the viewing time threshold. 10 does not change. As a result, even if the driver 11 does not look at it, the display angle range 10 does not move simply by changing the position of the eye, and the display angle only by looking at the display unit 4 for a very short time The range 10 never moves. Therefore, it is possible to suppress that the image displayed on the display unit 4 frequently moves and the driver 11 is bothersome.

  On the other hand, if the viewing time threshold is exceeded and the display unit 4 is kept looking, the display angle range 10 moves according to the movement of the eye position of the driver 11. Therefore, when it is desired to check the range not displayed on the display unit 4, the display angle range 10 can be changed by a natural operation.

Second Embodiment
Next, a second embodiment will be described. In the following description of the second embodiment, elements having the same reference numerals as the reference numerals used so far are identical to the elements of the same reference numerals in the previous embodiments, unless otherwise stated. In addition, when only a part of the configuration is described, the embodiment described above can be applied to other parts of the configuration.

  In the second embodiment, the range determining unit 72 executes the process shown in FIG. 15 instead of FIG. In FIG. 15, S14A and S15A are added to FIG.

  In S14A, it is determined whether or not the change angle θ1 determined in S14 is equal to or less than a preset speed switching angle. If this determination is YES, the process proceeds to S15, and the rotation angle θ2 is set to θ1. On the other hand, if the determination in S14A is NO, the process proceeds to S15A.

  In S15A, a value obtained by multiplying the change angle θ1 by the coefficient 1.5 is set as a rotation angle θ2. After S15A, the process proceeds to S16. Therefore, the display angle range 10 is rotationally moved by the rotation angle θ2 determined in S15A. The coefficient used in S15A is not limited to 1.5, and may be a value larger than one.

  In the second embodiment, while the change angle θ1 is equal to or less than the speed switching angle, the display angle range 10 is rotationally moved in the direction opposite to the eye movement direction of the driver 11 by the change angle θ1. On the other hand, when the change angle θ1 exceeds the speed switching angle, the rotation angle θ2 is determined by multiplying the change angle θ1 by a coefficient larger than one. That is, the display angle range 10 is moved in the direction opposite to the movement direction of the eyes of the driver 11 at an angle larger than the change angle θ1 of the eye position.

  Thus, the driver 11 can easily rotate the display angle range 10 from the initial display angle range 10 by a large amount. In addition, since the change speed of the display angle range 10 is relatively slow at first, it is easy to change the display angle range 10 a little.

Third Embodiment
In the third embodiment, the range determining unit 72 executes the process shown in FIG. 16 instead of FIG. In FIG. 16, S15B is executed instead of S15 of FIG. In S15B, a value obtained by multiplying the change angle θ1 by the coefficient 0.7 is set as a rotation angle θ2. After executing S15B, the process proceeds to S16. Therefore, the display angle range 10 is rotationally moved by the rotation angle θ2 determined in S15B. The coefficient used in S15B is not limited to 0.7, and may be a value smaller than 1.

  In the third embodiment, the rotation angle θ2 is determined by multiplying the change angle θ1 by a coefficient smaller than one. That is, the display angle range 10 is moved in the direction opposite to the movement direction of the eyes of the driver 11 at an angle smaller than the change angle θ1 of the eye position.

  Thereby, the driver 11 can move the display angle range 10 slowly. Therefore, the driver 11 can easily set the display angle range 10 to a position to be confirmed.

Fourth Embodiment
In the fourth embodiment, the range determining unit 72 executes FIG. 17 when transitioning to the range movable mode. In S10 shown in FIG. 17, it is determined which of the speed variable mode, the standard mode, and the deceleration mode the currently selected mode is.

  In the variable speed mode, the change angle θ1 is compared with the speed switching angle described in the second embodiment, and the change angle θ1 is multiplied by a coefficient larger than 1 to switch whether to determine the rotation angle θ2. It is. The standard mode is a mode in which the change angle θ1 is used as it is as the rotation angle θ2 described in the first embodiment. The deceleration mode is a mode described in the third embodiment, in which the change angle θ1 is multiplied by a coefficient smaller than 1 to determine the rotation angle θ2.

  Either of these modes may be switched by user operation. Also, the mode may be automatically switched depending on whether the shift position is the forward position or the reverse position. Also, it may be switched automatically according to the vehicle speed.

  If it is the variable speed mode, the process proceeds to FIG. 15. If it is the standard mode, the process proceeds to FIG. 12. If it is the deceleration mode, the process proceeds to FIG.

  As mentioned above, although embodiment was described, the disclosed art is not limited to the above-mentioned embodiment, and the following modification is also contained in the range indicated, and also within the range which does not deviate from the gist besides the following. Various modifications can be made.

<Modification 1>
A mode in which the display angle range 10 does not move may be selected regardless of the viewing time, the movement amount, and the movement time.

<Modification 2>
In the variable speed mode, instead of multiplying by a coefficient larger than 1, the amount of change in the rotation angle θ2 may be increased as the change angle θ1 is larger in a higher-order function such as a quadratic function.

<Modification 3>
In the first embodiment, as the conditions for shifting to the speed variable mode, the condition for the visual recognition time (S3), the condition for the movement amount (S5), and the condition for the movement time (S6) are provided. However, it is not necessary to have all these three conditions, and any one or two may be provided. For example, the determination of S5 may be omitted, and S6 may be performed after S4. Also, the determination of S6 may be omitted.

1: In-vehicle display device 2: Outside camera 2F: Front camera 2L: Left rear camera 2R: Right rear camera 3: Outside image processing unit 4: Display unit 5: In-vehicle camera 6: In-vehicle image processing unit 7: View angle calculation unit 8L : Left side mirror 8R: Right side mirror 9: Vehicle width direction line 10: Display angle range 11: Driver 12: Dashboard 13: Steering wheel 15: Imaging angle range 71: Vision time measurement unit 72: Range determination unit C: Vehicle Le: Eye direction line Ls: Reference line θ1: Change angle θ2: Rotation angle

Claims (8)

A display device for a vehicle, which is used in the vehicle to display an image captured by an outside camera (2) that captures an area around the vehicle (C),
A display unit (4) for displaying a part of the image captured by the camera outside the vehicle;
A detection unit (6) for detecting the position of eyes of a driver (11) driving the vehicle;
A visual recognition time measurement unit (71) for measuring a visual recognition time which is a time during which the driver is visualizing the display unit based on the position of the eye of the driver detected by the detection unit;
Based on the fact that the visual recognition time exceeds a visual recognition time threshold set in advance, a display angle range (10) to be displayed on the display unit from the image captured by the camera outside the vehicle is moved to the position of the eye position of the driver A display device for a vehicle, comprising: a range determining unit (72) to be moved accordingly.   The range determination unit sets a reference position of the eye of the driver based on the determination that the visual recognition time has exceeded the visual recognition time threshold, and the movement amount of the eye position of the driver from the reference position is a distance threshold The display apparatus for vehicles according to claim 1 which moves said display angle range according to movement of the position of said eye of said driver based on having exceeded.   The range determination unit is based on the fact that the time during which the eye position continues to move in the fixed direction exceeds the movement time threshold after the time when it is determined that the recognition time exceeds the recognition time threshold. The vehicle display device according to claim 1, wherein the display angle range is moved according to the movement of the eye position of the driver.   The range determination unit sets a reference line (Ls) directed from the display unit toward the eyes of the driver based on the determination that the viewing time exceeds the viewing time threshold, and the display unit The display angle range is moved in the direction opposite to the movement direction of the driver's eyes by an angle formed by the reference line and the eye direction line (Le) toward the direction of the eye position of the driver detected by the detection unit The display apparatus for vehicles of any one of claim | item 1 -3.   The range determination unit determines the display angle range by an angle between the eye direction line and the reference line while the angle between the eye direction line and the reference line is equal to or less than a preset speed switching angle. When the angle between the eye direction line and the reference line is greater than the speed switching angle, the angle between the eye direction line and the reference line is moved in the opposite direction to the eye movement direction of the driver. The vehicle display device according to claim 4, wherein the display angle range is moved in a direction opposite to the moving direction of the eyes of the driver at a larger angle.   The range determination unit sets a reference line (Ls) directed from the display unit toward the eyes of the driver based on the determination that the viewing time exceeds the viewing time threshold, and the display unit The display angle range is the movement direction of the eye of the driver by an angle obtained by multiplying the angle between the eye direction line (Le) in the direction of the eye position of the driver and the reference line by a positive coefficient smaller than one. The vehicle display device according to any one of claims 1 to 3, wherein the vehicle display device is moved in the opposite direction. The range determining unit
A reference line (Ls) directed from the display unit toward the eye of the driver is set based on the judgment that the visual recognition time has exceeded the visual recognition time threshold.
The angle between the eye direction line (Le) in the direction of the eye position of the driver from the display unit and the reference line is equal to or less than a preset speed switching angle, the eye direction line and the reference line The display angle range is moved in the direction opposite to the moving direction of the eyes of the driver by an angle formed by the angle .theta., And the angle between the eye direction line and the reference line exceeds the speed switching angle. A variable mode in which the display angle range is moved in a direction opposite to the moving direction of the eye of the driver at an angle larger than an angle formed by an eye direction line and the reference line;
A standard mode in which the display angle range is moved in the direction opposite to the eye movement direction of the driver by the angle between the eye direction line and the reference line regardless of the angle between the eye direction line and the reference line. When,
Three modes of the deceleration mode in which the display angle range is moved in the direction opposite to the moving direction of the eye of the driver by an angle obtained by multiplying an angle formed by the eye direction line and the reference line by a positive coefficient smaller than 1. Is switchable, The display apparatus for vehicles of any one of Claims 1-3.   The display device for a vehicle according to any one of claims 1 to 7, wherein the camera outside the vehicle is a front camera that captures an area in front of the vehicle.

Images