JP2007237858A - Image information providing device, image information providing method, and vehicle with image information providing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image information providing device capable of effectively reducing incompatible feeling or unpleasant feeling at the time of gazing an image without deterioration of easiness in watching the image, an image information providing method, and a vehicle with the image information providing device. <P>SOLUTION: The image information providing device 100 comprises a vehicle movement detecting portion 106 detecting the movement of a vehicle, an indicating device 111 indicating the image to an occupant, an image controlling portion 108 computing displacement in a translation direction of an indicated image by the indicating device 111 accompanied with the movement of the vehicle, an image displacing portion 110 correcting an indicating position of the indicated image in a direction canceling the displacement in the translation direction accompanied with the movement of the vehicle, a seat driving portion 103 changing restraining property to a seat of the occupant, and an occupant restraining control portion 102 controlling the seat driving portion 103 in a direction decreasing relative displacement of an occupant head portion and the indicating device 111 accompanied with the movement of the vehicle when the occupant uses the indicating device 111 as compared with a case that the occupant does not use the indicating device 111. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention belongs to the technical field of an image information providing device, an image information providing method, and a vehicle with an image information providing device that display an image or the like in a vehicle.

As this kind of technology, the image in the display is moved according to the movement of the vehicle and the head of the passenger, and is stably displayed in the space. What reduces an uncomfortable feeling and a discomfort is known (for example, refer patent document 1).
JP 2004-224315 A

  However, in the above prior art, when the head displacement is greatly swung, the amount of image correction increases, so that the frequency of the image protruding from the screen is high, and there is a risk that visibility may be impaired. .

  The present invention has been made paying attention to the above problems, and its purpose is to provide image information that can effectively reduce discomfort and discomfort when gazing at an image without impairing the visibility of the image. An apparatus, an image information providing method, and a vehicle with an image information providing apparatus are provided.

In order to achieve the above object, the present invention provides:
Vehicle motion detection means for detecting the movement of the vehicle;
Display means for displaying images to the occupant;
Display image displacement calculation means for calculating a displacement in the translation direction of the display image by the display means according to the movement of the vehicle;
Display control means for correcting the display position of the display image in a direction to cancel the translational displacement caused by the movement of the vehicle;
Restraint change means for changing the restraint on the passenger's seat;
When the occupant is using the display means, the restraint property changing means in a direction in which the relative displacement between the occupant's head and the display means accompanying the movement of the vehicle is smaller than when the display means is not used. Or restrictive control means for prompting the occupant to input an operation to the restrictive change means in a direction in which relative displacement between the occupant head and the display means decreases.
It is characterized by providing.

  In the image information providing apparatus of the present invention, since the above configuration is used, it is possible to reduce the frequency of the image protruding from the screen and the correction of the image itself, and effectively reduce the visibility of the image without impairing the visibility of the image. It is possible to reduce discomfort and discomfort.

  Hereinafter, the best mode for carrying out the present invention will be described based on Examples 1 to 3.

First, the configuration will be described.
FIG. 1 is a diagram illustrating a vehicle with an image information providing device according to a first embodiment.
Vehicle motion sensor 1, information source device 2, body pressure sensor 3, cushion angle sensor 4a, cushion actuator 4b, upper backrest angle sensor 5a, upper backrest actuator 5b, and lower backrest angle sensor 6a And a lower backrest actuator 6b, a display operation switch 7, a controller 8, and an image display device 9.

The vehicle motion sensor 1 detects translational motion and rotational motion of the vehicle.
The information source device 2 inputs an original image to be displayed on the screen of the image display device 9.
The body pressure sensor 3 detects the body pressure distribution of the occupant acting on the seat 10.
The cushion angle sensor 4a detects the seat cushion angle. The cushion actuator 4b changes the seat cushion angle.

The upper backrest angle sensor 5 a detects the angle of the upper backrest 11 a of the seat 10. The upper backrest actuator 5b changes the angle of the upper backrest 11a.
The lower backrest angle sensor 6 a detects the angle of the lower backrest 11 b of the seat 10. The lower backrest actuator 6b changes the angle of the lower backrest 11b.
The display operation switch 7 detects that the display of the image display device 9 is being used.

  Based on the detection values of the vehicle motion sensor 1, the body pressure sensor 3, the cushion angle sensor 4a, the upper backrest angle sensor 5a, the lower backrest angle sensor 6a, the display operation switch 5, and the like, the controller 8 The backrest actuator 5b and the lower backrest actuator 6b are driven and controlled, and an image displayed on the display of the image display device 9 is controlled.

  FIG. 2 is a control block diagram of the image information providing apparatus 100 according to the first embodiment. The image information providing apparatus 100 includes a display usage state detection unit 101, an occupant restraint control unit (restraint control unit) 102, and a seat drive. Unit (constraint change means) 103, seat pressure detection unit 104, occupant posture / physique estimation unit 105, vehicle motion detection unit (vehicle motion detection unit) 106, occupant motion estimation unit (head motion estimation unit) ) 107, an image control unit (display image displacement calculation means) 108, an information source device 109, an image displacement unit (display control means) 110, and a display device (display means) 111.

The display usage state detection unit 101 corresponds to the display operation switch 7 in FIG. 1 and detects that the display is being used.
The occupant restraint control unit 102 controls the restraint state of the occupant's body based on the signal from the display usage state detection unit 101.

  The seat drive unit 103 corresponds to the cushion actuator 4b, the upper backrest actuator 5b, and the lower backrest actuator 6b in FIG. 1, and the seat cushion and backrest (upper backrest 11a) of the seat 10 based on a signal from the occupant restraint control unit 102. The angle of the lower backrest 11b) is changed.

The seating surface pressure detection unit 104 corresponds to the body pressure sensor 3 in FIG. 1 and detects the pressure distribution on the seating surface.
The occupant posture / physique estimation unit 105 estimates the occupant posture and the physique from the seat pressure.
The vehicle motion detection unit 106 corresponds to the vehicle motion sensor 1 of FIG. 1 and measures the translational acceleration of the vehicle.
The occupant motion estimation unit 107 estimates the occupant motion using the vehicle motion information, the occupant posture / physique estimated value, and the information from the occupant restraint control unit.

The image control unit 108 determines the control amount of the image using the vehicle motion measurement value and the occupant motion estimation value, and controls the image.
The information source device 109 corresponds to the information source device 2 in FIG. 1 and inputs an original image to be displayed on the screen.

The image displacement unit 110 displaces the image from the information source device within the screen based on the signal from the image control unit 108.
The occupant restraint control unit 102, the occupant posture / physique estimation unit 105, the occupant motion estimation unit 107, the image control unit 108, and the image displacement unit 110 are configured as a program of the controller 8 in FIG.
The display device 111 corresponds to the image display device 9 in FIG. 1 and displays the image changed by the image displacement unit 110.

[Image information provision control processing]
FIG. 3 is a flowchart illustrating the flow of the image information provision control process executed by the image information provision apparatus 100 according to the first embodiment. Each step will be described below.

  In step S10, it is determined whether or not the power of the screen is ON. If yes, then continue with step S20, otherwise repeat step S10.

  In step S20, the current seat cushion angle and backrest angle are stored in the memory, and the process proceeds to step S30.

  In step S30, the angle of the seat cushion and the backrest is changed so that the seating posture can suppress the occupant head movement, and the process proceeds to step S40.

  In step S40, the pressure distribution on the seating surface is measured, and the process proceeds to step S50.

  In step S50, the sitting posture and physique of the occupant are estimated, and the process proceeds to step S60.

  In step S60, the movement of the vehicle is measured, and the process proceeds to step S70.

  In step S70, a calculation model to be used for human head movement estimation is determined from the current occupant restraint state and the sitting posture / physique estimation value estimated in step S50, and the calculation model and the vehicle movement data measured in step S60 are determined. The occupant head movement is estimated using, and the process proceeds to step S80.

  Here, the parameters used in the calculation model are the current seat cushion, backrest, side support, angle of each part of the headrest, position, hardness, damping characteristics, manual operation of the passenger's seat moving part, manual selection of the control method by the passenger It is adjusted according to the result.

  In step S80, the movement amount of the display attached to the vehicle is calculated using the measured vehicle movement data, and the process proceeds to step S90.

  In step S90, the relative displacement between the display and the occupant eyeball is calculated based on the vehicle movement obtained in step S60 and the estimated value of the occupant head movement estimated in step S80, and the process proceeds to step S100.

  In step S100, a displacement amount of the image necessary for canceling the relative displacement calculated in step S90 is calculated, and the process proceeds to step S110.

  In step S110, based on the displacement amount of the image calculated in step S100, the image is shifted or rotated in the translation direction, and the process proceeds to step S120.

  In step S120, the corrected image is displayed on the display, and the process proceeds to step S130.

  In step S130, it is determined whether or not the screen is powered off. If YES, the process moves to step S140, and if NO, the process moves to step S60.

  In step S140, the seating posture is returned to the original state stored in the memory, and this control is terminated.

[Image information provision control operation]
When the occupant turns on the screen power, in the flowchart of FIG. 3, the process proceeds from step S10 to step S20 to step S30. In step S30, the seat cushion, The angle of the backrest is changed.

  Subsequently, the flow proceeds from step S40 to step S50, and the flow proceeds from step S60 to step S70 to step S80 to step S90 to step S100 to step S110 to step S120 to step S130 until the passenger turns off the screen power. Is repeated, and the image display position on the display is corrected so that the relative displacement between the display and the occupant's eyeball becomes zero according to the occupant's head movement accompanying the movement of the vehicle.

  When the occupant turns off the screen power, the process proceeds from step S130 to step S140. In step S140, the sitting posture is returned to the original state stored in the memory, and the control is terminated.

Next, the image correction operation of the image information providing apparatus 100 according to the first embodiment will be described.
The principle of image position correction accompanying the rotational movement of the vehicle and image position correction accompanying the relative displacement of the screen to the head (eyeball) will be described with reference to FIG. In general, the vehicle rotates in the pitch direction as it accelerates and decelerates, and the screen moves downward when decelerating and upward when accelerating from an occupant on the vehicle, with reference to a distant still landscape. looks like.

  For this reason, as shown in FIG. 4 (a), when the screen is watched, the visual information and the information from the vestibular apparatus (semicircular canal, otolith) do not match, and a sense of incongruity occurs. For this reason, when the image is displayed while being displaced in the opposite direction, the image appears to be fixed in space, so that the uncomfortable feeling is reduced.

  On the other hand, as shown in Fig. 4 (b), in addition to the relative displacement in the vertical or horizontal direction occurring between the screen and the passenger's head due to road surface irregularities, etc., when acceleration / deceleration acts, the pitch is also applied to the passenger's head. When the head rotates forward, the eyeball position moves downward with respect to the screen, and when the head rotates backward, the eyeball position moves upward.

  For this reason, in order to display the image so as to be fixed in space, it is necessary to displace the image in the direction opposite to the relative displacement between the screen and the occupant head. Similarly, the displacement caused by the roll of the vehicle or the occupant or the left-right movement causes discomfort and discomfort, but these can also be reduced by correcting the image.

Next, an occupant restraining action of the image information providing apparatus according to the first embodiment will be described.
FIG. 5 shows an example of a change in seat shape for changing the restraint state of the occupant's body.
In the seat 10 of the first embodiment, the backrest is vertically divided into an upper backrest 11a and a lower backrest 11b, and the lower backrest is added to the first reclining mechanism according to the angle change between the seat cushion and the lower backrest 11b. A second reclining mechanism (an intermediate folding mechanism) by changing the angle between the rest 11b and the upper backrest 11a is provided.

  When the backrest is straight as shown in FIG. 5A and the reclining angle is small (from the vertical direction), the weight of the occupant acting on the backrest is small, and the load sharing ratio between the cushion and the backrest is about 7 : 3, but when the reclining angle of the lower backrest 11b is large as shown in FIG. 5 (b), the center of gravity of the upper body moves backward, the weight acting on the backrest increases, and the cushion And the load sharing ratio of the backrest is approximately 6: 4.

  For this reason, the frictional force between the occupant and the seat skin increases, and the lateral movement of the occupant's upper body due to cornering, right / left turn, etc. is suppressed. Moreover, even when the inertial force in the front-rear direction accompanying acceleration / deceleration acts, the front-rear movement of the upper body is suppressed. When the movement of the occupant's upper body is suppressed in this way, the movement of the head in the front-rear and left-right directions, particularly the low-frequency movement with a large amplitude (swing), is also suppressed. It is possible to reduce the relative displacement.

  As a result, the uncomfortable feeling and uncomfortable feeling at the time of gazing at the image are reduced, and when the image one control is performed, the control amount can be reduced. Furthermore, raising the upper backrest 11a relative to the lower backrest 11b makes it easier to see the front display and external scenery, and also makes it easier to support the head with the headrest, and between the headrest and the passenger's head. The use of friction and the use of a headrest with a shape that easily supports the head can further reduce the head swing.

  FIG. 6 shows an example of the influence of occupant restraint by the seat 10 on the occupant head position (frequency distribution) with respect to the vehicle body during actual vehicle travel. If the restraint is small, the head is likely to swing left and right, so the probability that the head is within ± 15 mm from the center position is 72%, whereas the seat with high restraint has the same probability of 92%. It can be seen that the occupant restraint by the seat is effective in suppressing the relative displacement between the vehicle-mounted display and the occupant head.

Next, the effect will be described.
The image information providing apparatus 100 according to the first embodiment has the following effects.

  A vehicle motion detection unit 106 that detects the movement of the vehicle, a display device 111 that displays an image to the occupant, an image control unit 108 that calculates a displacement in the translation direction of the display image by the display device 111 accompanying the movement of the vehicle, An image displacement unit 110 that corrects the display position of the display image in a direction that cancels the translational displacement caused by the movement of the vehicle, a seat drive unit 103 that changes the restraint of the occupant on the seat, and the occupant uses the display device 111. When used, the occupant restraint that controls the seat drive unit 103 in the direction in which the relative displacement between the occupant head and the display device 111 accompanying the movement of the vehicle is smaller than when the display device 111 is not used. And a control unit 102. As a result, it is possible to effectively reduce discomfort and discomfort when gazing at the image without impairing the visibility of the image.

  An occupant motion estimation unit 107 that estimates the movement of the occupant head after the restriction change by the seat drive unit 103 is provided, and the image control unit 108 calculates a displacement in the translation direction according to the movement of the occupant head. As a result, it is possible to prevent the estimation accuracy of the occupant head from being lowered due to a change in the occupant's body restraint, and to effectively reduce discomfort and discomfort when gazing at the image and difficulty in viewing the image. .

  The occupant motion estimation unit 107 includes at least one of a seat cushion, a backrest, a side support, an angle of each part of the headrest, a position, hardness, a damping characteristic, a manual operation of the occupant on the seat movable part, and a manual selection result of a control method by the occupant. Based on the above, the movement of the occupant head is estimated. That is, it is possible to efficiently improve the estimation accuracy of the occupant head movement by adjusting the parameter having a large influence on the head movement.

  The seat has an upper backrest 11a and a lower backrest 11b that are divided into upper and lower parts, and the seat driving unit 103 is a means for changing the inclination angle of the upper backrest 11a and the lower backrest 11b (upper backrest actuator) 5b, the lower backrest actuator 6b), and when the occupant is using the display device 111, the occupant restraint control unit 102 makes the inclination angle of the lower backrest 11b larger than the inclination angle of the upper backrest 11a. As a result, the posture retention of the backrest can be increased, the occupant head movement can be reduced, and the upper backrest 11a can be raised to make it easier for the outside scenery to enter the occupant's eyes. It is possible to reduce discomfort and difficulty in viewing images.

  A vehicle motion detection unit 106 that detects the movement of the vehicle, a display device 111 that displays an image to the occupant, an image control unit 108 that calculates a displacement in the translation direction of the display image by the display device 111 accompanying the movement of the vehicle, An image displacement unit 110 that corrects the display position of the display image in a direction that cancels the translational displacement caused by the movement of the vehicle, a seat drive unit 103 that changes the restraint of the occupant on the seat, and the occupant uses the display device 111. When used, the occupant restraint that controls the seat drive unit 103 in the direction in which the relative displacement between the occupant head and the display device 111 accompanying the movement of the vehicle is smaller than when the display device 111 is not used. And a vehicle with an image information providing device. As a result, it is possible to effectively reduce discomfort and discomfort when gazing at the image without impairing the visibility of the image.

  -Correct the display position of the display image in a direction to cancel the displacement of the display image in the translation direction by the display device 111 accompanying the movement of the vehicle, and use the display device 111 when the occupant is using the display device 111 The restraint on the occupant's seat is changed in a direction in which the relative displacement between the occupant head and the display device 111 accompanying the movement of the vehicle is reduced. As a result, it is possible to effectively reduce discomfort and discomfort when gazing at the image without impairing the visibility of the image.

  A procedure (step S60 to step S120) for correcting the display position of the display image in a direction to cancel the translational displacement of the display image by the display device 111 accompanying the movement of the vehicle, and the occupant is using the display device 111 In this case, the procedure (step for changing the restraint on the occupant's seat in a direction in which the relative displacement between the occupant's head and the display device 111 accompanying the movement of the vehicle is smaller than when the display device 111 is not used (step). S30). As a result, it is possible to effectively reduce discomfort and discomfort when gazing at the image without impairing the visibility of the image.

  The second embodiment is an example in which the restraint property of the seat is changed according to the head displacement amount of the occupant after the sitting posture is changed.

First, the configuration will be described.
FIG. 7 is a diagram illustrating a vehicle with an image information providing device according to a second embodiment, and only differences from the configuration of the first embodiment illustrated in FIG. 1 will be described.
The seat lifter sensor 12a detects the height of a seat lifter (not shown) that changes the height of the seat cushion. The sheet lifter actuator 12b drives the sheet lifter.

FIG. 8 is a control block diagram of the image information providing apparatus 200 according to the second embodiment. Only parts different from the configuration of the first embodiment shown in FIG. 2 will be described.
An occupant restraint control unit (restraint control means) 201 controls the restraint state of the occupant's body based on a signal from the display usage state detection unit 101 or a signal from an occupant motion estimation unit described later.

The seat drive unit (constraint change means) 202 corresponds to the cushion actuator 4b, the upper backrest actuator 5b, the lower backrest actuator 6b, and the seat lifter actuator 12b in FIG. 7, and is based on a signal from the occupant restraint control unit. Drive the backrest and seat lifter.
The occupant motion estimation unit (head motion estimation means) 203 estimates the occupant motion using the vehicle motion information, the occupant posture / physique estimated value, and the information from the occupant restraint control unit 201.

[Image information provision control processing]
FIG. 9 is a flowchart illustrating the flow of the image information provision control process executed by the image information provision apparatus 200 according to the second embodiment. Each step will be described below. In addition, the same step number is attached | subjected to the step which performs the process same as Example 1 shown in FIG. 3, and description is abbreviate | omitted.

  In step S210, the attitude flag FLAG is set to 0, and the process proceeds to step S40.

  In step S220, it is determined whether or not the head movement estimated value estimated in step S70 is a predetermined amount or more. If YES, the process moves to step S240, and if NO, the process moves to step S230.

  In step S230, it is determined whether or not the flag FLAG is 0. If YES, the process moves to step S250, and if NO, the process moves to step S80.

  In step S240, it is determined whether or not the flag FLAG is 0. If YES, the process moves to step S80, and if NO, the process moves to step S270.

  In step S250, the posture is changed to increase the restraint, and the lifter is adjusted so that the eye point height is substantially constant, and the process proceeds to step S260.

  In step S260, the flag FLAG is set to 1, and the process proceeds to step S80.

  In step S270, the posture is changed so as to reduce the restraint, and the lifter is adjusted so that the eye point height is substantially constant, and the process proceeds to step S280.

  In step S280, the flag FLAG is changed to 0, and the process proceeds to step S80.

[Image information provision control operation]
When the occupant turns on the screen power, in the flowchart of FIG. 9, the process proceeds from step S10 to step S20 to step S30. In step S30, the seat cushion, The angle of the backrest is changed.

  While the occupant is watching the screen, while the occupant's head displacement is less than the predetermined amount, step S60 → step S70 → step S220 → step S230 → step S80 → step S90 → step S100 → step S110 → step The flow from S120 to step S130 is repeated.

  If the occupant's head displacement is greater than or equal to a predetermined amount while viewing the screen, step S60 → step S70 → step S220 → step S240 → step S250 → step S260 → step S80 → step S90 → step S100 → Proceeding from step S110 to step S120 to step S130, in step S250, the posture is changed so as to increase the restraint, and the lifter is adjusted so that the eye point height is kept substantially constant.

  Thereafter, the flow proceeds to step S60 → step S70 → step S220 → step S240 → step S80 → step S90 → step S100 → step S110 → step S120 → step S130 until the passenger's head displacement becomes less than the predetermined amount. Is repeated.

  If the occupant's head displacement is less than the predetermined amount, step S60 → step S70 → step S220 → step S230 → step S270 → step S280 → step S80 → step S90 → step S100 → step S110 → step S120 → step Proceeding to S130, in step S270, the posture is changed so as to reduce the restraint, and the lifter is adjusted so that the eye point height is kept substantially constant.

Next, an occupant restraining action of the image information providing apparatus 200 according to the second embodiment will be described.
FIG. 10 is a time chart illustrating the occupant restraining action of the second embodiment.
At time t1, the occupant turns on the screen power, and at time t2, a posture change signal is output from the occupant restraint control unit 201 to the seat driving unit 202, so that the seat cushion is in a seating posture that can suppress occupant head movement. The backrest angle is changed. For this reason, after the time point t2, the correction amount and frequency at the time of image correction accompanying the vehicle movement can be reduced.

  At time t3, the occupant's head displacement exceeds a predetermined amount, and at time t4, an attitude change signal is output from the occupant restraint control unit 201 to the seat drive unit 202, and the attitude is changed to increase restraint. . In other words, even after a change to a sitting posture that suppresses head movement, in a driving scene where the head movement of the occupant is large, the occupant's restraint is further improved, so that the head is stable due to the stability of the head when gazing at the image. Sex can be maintained. Further, at time t4, the lifter is adjusted so that the eye point height is substantially constant, so that the comfort due to the ease of obtaining the front external view can be maintained.

  At time t5, the occupant's head displacement is less than the predetermined amount, so at time t6, the posture is changed to reduce restraint, and the lifter is adjusted so that the eyepoint height remains substantially constant. . That is, in a traveling scene where the head movement of the occupant is small, comfort due to static sitting comfort can be obtained by reducing the occupant's restraint.

  At time t7, the passenger turns off the screen power. At time t8, the posture change signal is output from the passenger restraint control unit 201 to the seat driving unit 202, and the seating posture returns to the original state stored in the memory.

  As described above, in the image information providing apparatus 200 according to the second embodiment, even when the same image is being viewed, the restraint of the occupant is changed depending on the size of the head swing, and the comfort and image due to static sitting comfort are improved. It is possible to improve the overall comfort by balancing the comfort due to head stability during gaze and the comfort due to the ease of obtaining a front external view.

Next, the effect will be described.
The image information providing apparatus 200 according to the second embodiment has the following effects.

  The occupant restraint control unit 201 changes the restraint by the seat drive unit 202 in accordance with the movement of the occupant head after the restraint change by the seat drive unit 202. In other words, by changing the restraint according to the driving situation, it is possible to effectively reduce the uncomfortable feeling or discomfort at the time of gazing at the image and the difficulty in viewing the image.

  The occupant restraint control unit 201 increases restraint when the displacement of the occupant head is greater than or equal to a predetermined amount, and lowers restraint when the displacement of the occupant head is less than the predetermined amount. In other words, by changing the restraint of the occupant depending on the size of the head swing, comfort due to static seating comfort, comfort due to head stability when gazing at the image, and comfort due to the ease of obtaining an external external field of view It is possible to balance and improve overall comfort.

  The third embodiment is an example in which a recommended seating posture for suppressing head movement and a seat adjustment method therefor are presented to an occupant in a vehicle equipped with a manual seat.

First, the configuration will be described.
FIG. 11 is a diagram illustrating a vehicle with image information provision according to a third embodiment, and only different portions from the configuration of the first embodiment illustrated in FIG. 1 will be described.
The upper backrest manual recliner 5c changes the angle of the upper backrest 11a according to the amount of manual operation input by the occupant.

The lower backrest manual recliner 6c changes the angle of the lower backrest 11b according to the amount of manual operation input by the occupant.
The seat manual lifter 12c adjusts the height of the seat lifter according to the amount of manual operation input by the occupant.
The upper backrest manual recliner 5c, the lower backrest manual recliner 6c, and the seat manual lifter 12c constitute restraint change means.

FIG. 12 is a control block diagram of the image information providing apparatus 300 according to the third embodiment, and only different parts from the configuration of the first embodiment shown in FIG. 2 will be described.
The occupant motion estimation unit (head motion estimation means) 301 estimates the occupant motion using the vehicle motion information and the occupant posture / physique estimated value.
The occupant restraint control unit (restraint control means) 302 causes the image display unit 111 to display a recommended sitting posture based on a signal from the display usage state detection unit 101.

[Image information provision control processing]
FIG. 13 is a flowchart illustrating the flow of the image information provision control process executed by the image information provision apparatus 300 according to the third embodiment. Each step will be described below. In addition, the same step number is attached | subjected to the step which performs the process same as Example 1 shown in FIG. 3, and description is abbreviate | omitted.

  In step S310, a recommended sitting posture for suppressing head movement and a seat adjustment method therefor are displayed on the image display unit 111, and the process proceeds to step S40.

[Image information provision control operation]
When the occupant turns on the screen power, in the flowchart of FIG. 13, the process proceeds from step S10 → step S310 → step S40 → step S50. In step S310, the recommended sitting posture for suppressing head movement and the corresponding The sheet adjustment method is displayed on the image display unit 111.

  Subsequently, the flow proceeds from step S40 to step S50, and the flow proceeds from step S60 to step S70 to step S80 to step S90 to step S100 to step S110 to step S120 to step S130 until the passenger turns off the screen power. Is repeated, and the image display position on the display is corrected so that the relative displacement between the display and the occupant's eyeball becomes zero in accordance with the movement of the head accompanying the movement of the vehicle.

  When the occupant turns off the screen power, the process proceeds from step S130 to step S140. In step S140, the sitting posture is returned to the original state stored in the memory, and the control is terminated.

  Next, the operation of the image information providing apparatus 300 according to the third embodiment will be described. In the third embodiment, when an occupant starts viewing an image, a recommended posture suitable for viewing the image is displayed on the screen. The occupant's own operation is encouraged so that the user can take a seating posture that reduces discomfort and discomfort due to shaking. As a result, the occupant can adjust each part of the seat while looking at the screen to take a seating posture suitable for viewing the image, so even if the vehicle has only a manual seat, the user may feel uncomfortable or uncomfortable when viewing the image. Pleasure can be reduced. Further, since an actuator and a controller for driving the seat are unnecessary, cost reduction can be realized.

Next, the effect will be described.
The image information providing apparatus 300 according to the third embodiment has the following effects.

  A vehicle motion detection unit 106 that detects the movement of the vehicle, a display device 111 that displays an image to the occupant, an image control unit 108 that calculates a displacement in the translation direction of the display image by the display device 111 accompanying the movement of the vehicle, An image displacement unit 110 that corrects the display position of the display image in a direction that cancels the displacement in the translational direction accompanying the movement of the vehicle, and restraint property change means (upper backrest manual recliner 5c, When the lower backrest manual recliner 6c and the seat manual lifter 12c) and the occupant are using the display device 111, the occupant's head and the display device 111 are displayed to the occupant rather than when the display device 111 is not used. And a restraint control unit 302 that prompts an operation input to the restraint property changing means in a direction in which the relative displacement decreases. As a result, it is possible to effectively reduce discomfort and discomfort when gazing at the image without impairing the visibility of the image.

(Other examples)
The best mode for carrying out the present invention has been described based on the first to third embodiments. However, the specific configuration of the present invention is not limited to the first to third embodiments. Design changes and the like within a range that does not depart from the gist are also included in the present invention.

For example, in the first to third embodiments, the backrest having the middle folding mechanism has been described. However, even in the case of a normal backrest without the middle folding mechanism, the upper body and the head swing by increasing the reclining angle. This can be reduced to some extent.
Further, as a restraint change means for changing the restraint on the passenger's seat, not only the reclining angle as in the first to third embodiments but also the back support and the side support portion of the headrest are deformed using an actuator. Thus, a configuration may be adopted in which occupant restraint is adjusted.

It is a figure which shows the vehicle with an image information provision apparatus of Example 1. FIG. FIG. 3 is a control block diagram of the image information providing apparatus 100 according to the first embodiment. 6 is a flowchart illustrating a flow of image information provision control processing executed by the image information provision apparatus 100 according to the first embodiment. It is a figure which shows the relationship between a vehicle motion and a passenger | crew motion, and required image correction. It is a figure which shows an example of a sheet | seat with a middle folding mechanism, and a seating attitude | position. It is a figure which shows the passenger | crew's head position (relative position of the left-right direction with respect to a vehicle; experimental value) at the time of a real vehicle travel. It is a figure which shows the vehicle with an image information provision apparatus of Example 2. FIG. FIG. 10 is a control block diagram of an image information providing apparatus 200 according to a second embodiment. 12 is a flowchart illustrating a flow of image information provision control processing executed by the image information provision apparatus 200 according to the second embodiment. 6 is a time chart showing an occupant restraining action of the second embodiment. It is a figure which shows the vehicle with image information provision of Example 3. FIG. FIG. 10 is a control block diagram of an image information providing apparatus 300 according to a third embodiment. 12 is a flowchart illustrating a flow of image information provision control processing executed by the image information provision apparatus 300 according to the third embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle motion sensor 2 Information source device 3 Body pressure sensor 4a Cushion angle sensor 4b Cushion actuator 5 Display operation switch 5a Upper backrest angle sensor 5b Upper backrest actuator 5c Upper backrest manual recliner 6a Lower backrest angle sensor 6b Lower backrest Actuator 6c Lower backrest manual recliner 7 Display operation switch 8 Controller 9 Image display device 10 Seat 11a Upper backrest 11b Lower backrest 12a Seat lifter sensor 12b Seat lifter actuator 12c Seat manual lifter 100 Image information providing device 101 Display usage state detection unit 102 Occupant restraint control unit 103 Seat drive unit 104 Seat pressure detection unit 105 Occupant posture / physique estimation unit 106 Vehicle operation Motion detection unit 107 Crew motion estimation unit 108 Image control unit 109 Information source device 110 Image displacement unit 111 Display device 200 Image information providing device 201 Crew restraint control unit 202 Seat drive unit 203 Crew motion estimation unit 300 Image information provision device 301 Crew motion Estimator 302 Crew restraint controller

Claims (9)

Vehicle motion detection means for detecting the movement of the vehicle;
Display means for displaying images to the occupant;
Display image displacement calculation means for calculating a displacement in the translation direction of the display image by the display means according to the movement of the vehicle;
Display control means for correcting the display position of the display image in a direction to cancel the translational displacement caused by the movement of the vehicle;
Restraint change means for changing the restraint on the passenger's seat;
When the occupant is using the display means, the restraint property changing means in a direction in which the relative displacement between the occupant's head and the display means accompanying the movement of the vehicle is smaller than when the display means is not used. Or restrictive control means for prompting the occupant to input an operation to the restrictive change means in a direction in which the relative displacement between the occupant head and the display means decreases.
An image information providing apparatus comprising: The image information providing apparatus according to claim 1,
Providing head movement estimation means for estimating the movement of the occupant head after the restriction change by the restriction change means,
The display image displacement calculation means calculates the displacement in the translation direction according to the movement of the occupant head. The image information providing apparatus according to claim 2,
The head movement estimating means includes at least one of a seat cushion, a backrest, a side support, an angle, a position, a hardness, a damping characteristic of each part of the headrest, a manual operation of the occupant on the seat movable part, and a manual selection result of a control method by the occupant. An image information providing apparatus for estimating a movement of an occupant's head based on the above. The image information providing device according to any one of claims 1 to 3,
The seat has an upper backrest and a lower backrest that are divided into upper and lower parts,
The restraint property changing means is means for changing the inclination angles of the upper backrest and the lower backrest,
The restraint control means makes the inclination angle of the lower backrest larger than the inclination angle of the upper backrest when an occupant uses the display means. The image information providing apparatus according to any one of claims 1 to 4,
The restraint control means changes the restraint by the restraint change means according to the movement of the occupant head after the restraint change by the restraint change means. The image information providing device according to claim 5,
The restraint control means increases the restraint when the displacement of the occupant head is a predetermined amount or more, and reduces the restraint when the displacement of the occupant head is less than a predetermined amount. An image information providing device. Vehicle motion detection means for detecting the movement of the vehicle;
Display means for displaying images to the occupant;
Display image displacement calculation means for calculating a displacement in the translation direction of the display image by the display means according to the movement of the vehicle;
Display control means for correcting the display position of the display image in a direction to cancel the translational displacement caused by the movement of the vehicle;
Restraint change means for changing the restraint on the passenger's seat;
When the occupant is using the display means, the restraint property changing means in a direction in which the relative displacement between the occupant's head and the display means accompanying the movement of the vehicle is smaller than when the display means is not used. Or restrictive control means for prompting the occupant to input an operation to the restrictive change means in a direction in which relative displacement between the occupant head and the display means decreases.
A vehicle with an image information providing device. Correcting the display position of the display image in a direction to cancel the displacement in the translation direction of the display image by the display means accompanying the movement of the vehicle,
When the occupant is using the display means, the relative displacement between the occupant head and the display means accompanying the movement of the vehicle is reduced in the direction in which the relative displacement between the occupant head and the display means is reduced. An apparatus for providing image information, characterized in that the restraint is changed or the restraint of the seat is urged to be changed in a direction in which a relative displacement between the occupant head and the display means is reduced as the vehicle moves. A procedure for correcting the display position of the display image in a direction to cancel the displacement in the translation direction of the display image by the display means according to the movement of the vehicle;
When the occupant is using the display means, the relative displacement between the occupant head and the display means accompanying the movement of the vehicle is reduced in the direction in which the relative displacement between the occupant head and the display means is reduced. A procedure for changing the restraint property, or urging the occupant to change the restraint property of the seat in a direction in which the relative displacement between the occupant head and the display means is reduced as the vehicle moves
A method for providing image information, comprising:

Images