JP2022174839A - Display device for vehicle - Google Patents

Abstract

To provide a display device for a vehicle which can restrain car sickness effectively for individual crew members.SOLUTION: A display device 100 displays an image on an interior material 2 which is provided within a room of an automobile 1. It comprises occupant information acquisition means 60 which acquires occupant information concerning a crew member H1, generation means 85 which generates a component of an image pre-stored as a variation image V changed on the basis of the occupant information, and display means 90 which performs display by projecting the variation image V on the interior material 2.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present disclosure relates to display devices for vehicles.

2. Description of the Related Art Conventionally, the technology described in Patent Document 1 is known as a vehicle display device. Specifically, the vehicle display device (motion sickness prevention and recovery device) described in Patent Document 1 includes an acceleration sensor, an information processing device, and a display. It is disclosed that a moving image is generated based on the acceleration applied to the vehicle, and the information of the moving image is output to a display. The display is realized by a liquid crystal display, and is provided in front of the passenger (passenger) when he/she sits on the seat so that the display portion faces the face of the passenger. According to this technology, it is possible to sufficiently prevent motion sickness or recover from motion sickness without causing drowsiness or the like.

Japanese Patent No. 4892731

However, with the configuration disclosed in Patent Document 1, it is not always possible to generate effective moving images for individual occupants only by inputting acceleration. In addition, when the position of the display is fixed, it becomes difficult to display moving images according to the posture of the occupant, the line of sight, and the like. Furthermore, if the display portion of the display is provided so as to face the face of the occupant, if the occupant is operating a mobile phone, personal computer, etc. or reading a book, the moving image will appear in the vicinity of the line of sight. There is a risk that it will be displayed, and it may become difficult to suppress motion sickness.

The present disclosure is a technique perfected based on the circumstances as described above, and an object thereof is to provide a vehicle display device capable of effectively suppressing motion sickness for each passenger.

The present disclosure relates to a vehicle display device for displaying an image on a vehicle interior material provided in a vehicle interior, comprising an acquisition means for acquiring occupant information relating to a occupant, and components of a pre-stored image, the occupant The present invention is characterized by comprising generating means for generating a changed image by changing it based on information, and display means for displaying the changed image by projecting the changed image on the vehicle interior material.

According to such a display device for a vehicle, it is possible to display a changed image on the interior material for a vehicle, in which the component elements of the image are changed based on the occupant information. can be displayed. In addition, since the changing image is displayed by projecting it onto the vehicle interior material, the changing image can be projected by adjusting it to an arbitrary portion, arbitrary range, or the like in the vehicle interior material. Constituent elements of a shadow image include the moving speed of a figure, symbol, etc. (hereinafter referred to as a figure, etc.) projected as a shadow image, the size of the figure, color, transparency, and the like.

In the above-described configuration, the vehicle display device divides the vehicle interior material into a central visual field portion positioned in the central visual field of the occupant and a peripheral visual field portion positioned in the peripheral visual field which is a peripheral region of the central visual field. A partitioning means may be provided for partitioning, and the display means may display the changing image in the peripheral vision portion.

According to such a vehicle display device, it is possible to display a changing image in a peripheral visual field located in a region (peripheral visual field) that avoids a region (central visual field) that can be visually recognized with relatively high visual acuity. For example, even if the occupant is operating a mobile phone, personal computer, etc., reading, etc., the changing image can be displayed in an area that avoids the central visual field where most of these are included in that area. It can prevent drunkenness.

In the above configuration, the obtaining means may obtain a line of sight of the occupant as the occupant information, and the classifying means may classify the central visual field and the peripheral visual field based on the line of sight. According to such a vehicle display device, even if the line of sight of the occupant moves, the vehicle interior material can be accurately divided into the central visual field portion and the peripheral visual field portion according to the line of sight.

In the above configuration, the obtaining means obtains the speed of the vehicle as the vehicle information about the vehicle, and the generating means obtains the speed of the components of the pre-stored image by the obtaining means. The changed image may be generated by changing it based on the speed of the vehicle. According to such a vehicle display device, it becomes easier for the passenger to intuitively recognize the speed of the vehicle, and motion sickness can be suppressed.

In the above configuration, the acquiring means acquires, as the occupant information, the orientation in which the occupant has boarded, and the display means changes the position for displaying the changing image based on the orientation in which the occupant has boarded the vehicle. may According to such a display device for a vehicle, for example, it is possible to suitably display a changing image even for an interior material for a vehicle that is included in the visual field of an occupant riding backward through a child seat.

According to the present disclosure, it is possible to provide a vehicle display device that can effectively suppress motion sickness for each passenger.

The figure which looked at the interior of the automobile concerning Embodiment 1 from the left A view of the interior of the car viewed from the rear Block diagram showing an electrical configuration of a display device Flowchart showing a flow of displaying a change image by a display device Diagram showing change image The figure which looked at the interior of the automobile which concerns on Embodiment 2 from the left

<Embodiment 1>
Embodiment 1 of the present disclosure will be described with reference to FIGS. 1 to 5. FIG. In this embodiment, a display device (vehicle display device) 100 (see FIG. 3) mounted on an automobile (vehicle) 1 as a vehicle will be described.

As shown in FIGS. 1 and 2, the interior of the automobile 1 includes a driver's seat 10 in which the driver sits, a front passenger seat 15 positioned to the left of the driver's seat 10, and a rear seat 20 positioned behind the driver's seat 10. is provided. An occupant H1 is seated in the rear seat 20. - 特許庁Further, in the interior of the automobile 1, there are provided a roof trim 30 forming a ceiling, a door trim 40 attached to the inside of a door panel (not shown), a vertically extending columnar garnish 50 supporting the roof trim 30, and a foot of the passenger H1. A carpet 54 forming a floor surface, a console box 58 as a storage box provided between the driver's seat 10 and the passenger's seat 15, and the like are provided. The driver's seat 10, passenger's seat 15, rear seat 20, roof trim 30, door trim 40, pillar garnish 50, carpet 54, and console box 58 are interior materials provided in the interior of the automobile 1 (vehicle interior materials). 2.

A camera 61 and a projector 91 are provided slightly behind the center of the roof trim 30 . A projector 92 is provided on the front upper side of the door trim 40 . A sensor 65 is provided on the seat back of the driver's seat 10 . A sensor 66 is provided on the seat cushion of the rear seat 20 . The camera 61 can acquire occupant information such as the posture, facial expression, line of sight, boarding position, and boarding direction of the occupant H1 by capturing an image of the interior of the vehicle. The sensor 65 can detect temperature, humidity, etc. (vehicle information described later) in the vehicle compartment. Further, the sensor 65 can detect the carbon dioxide concentration (occupant information) in the exhaled air of the occupant H1. The sensor 66 can acquire passenger information such as body temperature and blood pressure of the passenger H1.

Projectors (display units) 91 and 92 can project a changing image, which will be described later, onto the interior material 2 . The projector 91 can mainly project a changing image onto the roof trim 30 , the pillar garnish 50 , the driver's seat 10 and the console box 58 . The projector 92 can mainly project a changing image onto the door trim 40 and the carpet 54 . It should be noted that the projectors 91 and 92 may complementarily project the changing image onto each of the interior materials 2 . For example, the projector 91 mainly projects a changing image to the driver's seat 10, but the projector 92 projects a part of the changing image (a part of a figure, a part of color, etc.) so as to compensate for this. good too.

FIG. 3 is a block diagram showing the electrical configuration of the display device 100. As shown in FIG. The display device 100 includes occupant information acquisition means 60, vehicle information acquisition means (vehicle information acquisition means) 70, a control section 80 having determination means 89, classification means 81, and generation means 85, and display means 90. ing. The two acquisition means 60 and 70 and the display means 90 are electrically connected to the control section 80 . The occupant information acquisition means 60 includes a camera 61, sensors 65 and 66, and a receiver 68, and acquires occupant information of the occupant H1. The receiving unit 68 is a part that receives passenger information such as sex, age, hobbies, and preferences of the passenger H1. The occupant information received by the receiving unit 68 is information that is input by the occupant H1 from an information terminal such as a mobile phone (smartphone) using a predetermined application and that is wirelessly transmitted from the information terminal.

A part of the vehicle information acquisition means 70 is included, for example, in an ECU (not shown), and acquires vehicle information (vehicle information) such as vehicle speed, acceleration, brake and accelerator inputs, and GPS (vehicle location information). to get A part of the vehicle information acquiring means 70 is a sensor provided on a panel (not shown) of the automobile 1, and acquires information related to the outside environment such as the outside temperature and the concentration of carbon dioxide in the outside air. The display means 90 includes projectors 91 and 92 .

Based on the occupant information acquired by the occupant information acquiring means 60, the determination means 89 determines whether or not the occupant is suffering from motion sickness and whether motion sickness suppression intervention is necessary. The dividing means 81 includes a defining portion 82 and a dividing portion 83 . As shown in FIGS. 1 and 2, the classification means 81 divides the interior material 2 into the central visual field portion 2A and the peripheral visual field portion 2B based on the line of sight E (indicated by the dashed line) acquired from the camera 61 and other occupant information. and

The defining portion 82 has a position opened by a central viewing angle determined with reference to the line of sight E (indicated by a one-dot chain line L1) and a position opened by a peripheral viewing angle determined with reference to the line of sight E (indicated by a two-dot chain line L2). and In FIG. 1, the central viewing angle in the vertical direction is indicated as θ _A , and the peripheral viewing angle in the vertical direction is indicated as θ _B . Then, the defining unit 82 defines the area inside the one-dot chain line L1 as the central visual field R1 of the occupant H1, and the area outside the one-dot chain line L1 and inside the two-dot chain line L2 (area around the central visual field R1 ) is defined as the peripheral vision R2 of the occupant H1. The partitioning portion 83 partitions the portion of the interior material 2 positioned in the central visual field R1 of the occupant H1 as the central visual field portion 2A, and partitions the portion positioned in the peripheral visual field R2 of the occupant H1 as the peripheral visual field portion 2B.

As shown in FIG. 3, the generating means 85 generates a changed image by changing the constituent elements of a stored image based on passenger information and vehicle information. The generating means 85 includes a storage unit 86 that stores a plurality of types of images as stored images, a selection unit 87 that selects one image from the plurality of stored images as a selected image, and components of the selected one selected image. and a changing unit 88 that changes the The types of images stored in the storage unit 86 include, for example, images in the form of rays, bubbles, ripples, and the like.

FIG. 5 shows an example of a ray-shaped shadow image (changed shadow image) V0. In this image V0, a plurality of light rays C flow rightward. The light beam C has a dot-shaped leading portion C1 and a tail portion C2 extending on the trajectory along which the leading portion C1 has moved (to the left of the leading portion C1). When the image selected by the selection unit 87 is such a ray-shaped image V0, the constituent elements of the selected image V0 are, for example, the speed at which the ray C flows to the right, the color of the ray C, and the color of the ray C. It refers to the transparency, the number of rays C per unit area, the size of the head C1, the length of the tail C2, and the like. Such components are stored in the storage unit 86 together with the image. For example, when the ray-shaped image V0 is selected as the selected image, the changing unit 88 accelerates or decelerates the speed of the ray C flowing to the right, changes the color of the ray C to a brighter color, By increasing or decreasing the number of light rays C, or the like, the above constituent elements in the selected image V0 are changed to generate a changed image V. FIG. Then, the display means 90 displays the changed image V generated by the changing portion 88 in the peripheral visual field portion 2B of the interior material 2 .

Next, the flow of projecting the change image onto the interior material 2 based on the occupant information of the occupant H1 will be described mainly using the flowchart shown in FIG. First, passenger information and vehicle information are acquired by the two acquiring means 60 and 70 (S1). In the present embodiment, the occupant information acquisition means 60 obtains the occupant information of the occupant H1, a 24-year-old man sitting in the rear seat 20 located behind the driver's seat 10, a point E1 on the rear surface of the headrest of the driver's seat 10 (Fig. 1 and It is assumed that information such as the line of sight E, the facial expression, and the carbon dioxide concentration in exhaled breath is acquired. It is also assumed that the vehicle information acquisition means 70 acquires information such as that there is an accelerator input and that the automobile 1 accelerates as vehicle information.

Next, the determination means 89 of the control unit 80 determines whether the passenger H1 is suffering from motion sickness based on the passenger information (for example, the passenger H1's line of sight E, facial expression, exhaled carbon dioxide concentration, etc.). It is determined whether or not intervention is necessary (S2). If motion sickness intervention is required (YES in S2), proceed to S3, and if motion sickness intervention is not required (NO in S2), return to S1.

In S3, the central visual field R1 and the peripheral visual field R2 are defined by the defining portion 82 of the dividing means 81. FIG. Specifically, based on the age of the passenger H1 (24 years old), the regulation unit 82 sets the central viewing angle θ _A in the vertical direction to 40 degrees, the peripheral viewing angle θ _B to 125 degrees, and sets the central viewing angle in the horizontal direction to 40 degrees. (not shown) is defined as 40 degrees, and the peripheral viewing angle (not shown) is defined as 200 degrees. do. Then, the defining unit 82 defines the area inside the one-dot chain line L1 as the central visual field R1 of the occupant H1, and defines the area outside the one-dot chain line L1 and inside the two-dot chain line L2 as the peripheral visual field R2 of the occupant H1. Defined as

Note that the regulation unit 82 may regulate the respective viewing angles to decrease from the respective values (reference values) as the age of the occupant increases from a predetermined age (for example, 20 years old). For example, when the passenger is 60 years old, the regulation unit 82 sets the central viewing angle θ _A in the vertical direction to 30 degrees, the peripheral viewing angle θ _B to 100 degrees, and the central viewing angle (not shown) in the horizontal direction to 30 degrees. degrees, and a peripheral viewing angle (not shown) may be defined as 150 degrees.

Next, the dividing portion 83 divides the portion of the interior material 2 positioned in the central visual field R1 of the occupant H1 as a central visual field portion 2A, and the portion positioned in the peripheral visual field R2 of the occupant H1 as a peripheral visual field portion 2B. Classify (S4). Specifically, as shown in FIGS. 1 and 2 , the dividing portion 83 includes the pillar garnish 50 and the portion 30A of the roof trim 30 on the front side of the driver's seat 10, and the upper portion of the headrest and seat back of the driver's seat 10. 10A, and an upper front end portion 40A of the door trim 40 and the like are divided as a central visual field portion 2A. The partitioned portion 83 includes a portion 30B located slightly behind the driver's seat 10 in the roof trim 30, a lower seat back portion 10B in the driver's seat 10, and a large portion including an inside handle, an armrest, etc. in the door trim 40. 40B, the carpet 54, the console box 58, etc. are classified as the peripheral vision portion 2B.

Next, in the generation unit 85, the selection unit 87 selects one image as the selected image V0 from the plurality of types of stored images stored in the storage unit 86 (S5). The selection unit 87 selects the ray-shaped image V0 as a selected image from a plurality of types of stored images based on the passenger information of the passenger H1 (for example, information that the passenger is a 24-year-old male).

Then, the changing unit 88 generates a changed image V by changing the components of the selected image V0 based on the occupant information and the vehicle information acquired by the two acquiring means 60 and 70 (S6). Specifically, as shown in FIG. 5, the changing unit 88 changes the speed at which the light ray C flows in the selected image V0 to 1.2 times the speed of the vehicle, and changes the color of the light ray C to that of the passenger. The color is changed to a warm color as the body temperature of H1 decreases (or to a cold color as the body temperature rises). Further, when the facial expression or posture of the occupant H1 is tense, the changing section 88 changes the transparency of the ray C to be thin, the head portion C1 to be large, and the tail portion C2 to be long with respect to a predetermined value. When the posture is relaxed, the transparency of the light ray C is increased with respect to a predetermined value, the leading portion C1 is decreased, and the tail portion C2 is shortened. The changing unit 88 changes the components of the selected image by such processing to generate a changed image V. FIG.

Next, the display means 90 projects and displays the changed image from the display means 90 to the peripheral visual field portion 2B (S7). Specifically, the projector 91 projects the changing image V mainly on the part 30B of the roof trim 30, the lower part 10B of the driver's seat 10, and the console box 58, and the projector 92 mainly projects the image V on the door trim 40. Project onto the majority 40B, and onto the carpet 54. In addition, the display means 90 does not project the changing image V on the central visual field portion 2A and the portion located in the region R3 outside the peripheral visual field R2 in the interior material 2. FIG.

Thereafter, the occupant information acquiring means 60 acquires occupant information again (S8), and the determination means 89 determines whether or not the occupant H1 has motion sickness (S9). If the occupant H1 is motion sick (YES in S9), the display device 100 performs processing to return to S3, and if the occupant H1 is not motion sick (NO in S9), the above series of processing ends. After that, the display device 100 starts processing from S1 again.

Next, the effects of this embodiment will be described. In this embodiment, a display device 100 for displaying an image on an interior material 2 provided in the interior of an automobile 1 includes an occupant information obtaining means 60 for obtaining occupant information about an occupant H1, and a previously stored image. The display device 100 includes the generating means 85 for generating the changed image V by changing the elements based on the occupant information, and the display means 90 for displaying the changed image V by projecting it onto the interior material 2 .

According to the display device 100 as described above, it is possible to display on the interior material 2 the changed image V obtained by changing the constituent elements of the pre-stored image based on the occupant information. Different variation images V can be displayed. In addition, since the changing image V is displayed by projecting it onto the interior material 2, the changing image V can be projected on the interior material 2 by adjusting it to an arbitrary portion, an arbitrary range, or the like.

The display device 100 divides the interior material 2 into a central visual field portion 2A positioned in the central visual field R1 of the occupant H1 and a peripheral visual field portion 2B positioned in the peripheral visual field R2 which is a peripheral region of the central visual field R1. A means 81 is provided, and a display means 90 displays the change image V in the peripheral vision portion 2B.

According to such a display device 100, the changing shadow image V can be displayed in the peripheral visual field portion 2B located in the area (peripheral visual field R2) that avoids the area (central visual field R1) that can be visually recognized with relatively high visual acuity. . For example, even if the occupant H1 is operating a mobile phone, a personal computer, etc., reading, etc., it is possible to display the changing image V in an area avoiding the central visual field R1 in which most of these items are included. It can prevent motion sickness.

The occupant information acquiring means 60 acquires the line of sight E of the occupant H1 as occupant information, and the classifying means 81 classifies the central visual field portion 2A and the peripheral visual field portion 2B based on the line of sight E. According to such a display device 100, even if the line of sight E of the occupant H1 moves, the interior material 2 can be accurately divided into the central visual field portion 2A and the peripheral visual field portion 2B according to the line of sight E.

The display device 100 includes vehicle information acquisition means 70 for acquiring the speed of the vehicle 1 as vehicle information related to the vehicle 1, and the generation means 85 acquires the velocity, which is one of the components of the stored image, by the vehicle information acquisition means 70. A changed image V is generated by changing it based on the speed of the vehicle 1 that has been detected. According to such a display device 100, it becomes easier for the passenger H1 to intuitively perceive the speed of the automobile 1, and motion sickness can be suppressed.

<Embodiment 2>
Next, Embodiment 2 of the present disclosure will be described with reference to FIG. In addition, in this embodiment, the same reference numerals are used for the same portions as those in the above-described embodiment, and duplicate descriptions of structures, actions, and effects are omitted.

A rear seat 20 located behind the driver's seat 10 is occupied by an occupant H2 seated in a child seat 21 attached rearward. In the display device 100 (see FIG. 3), the camera 61 of the occupant information acquisition means 60 acquires occupant information such as the line of sight E200 of the occupant H2 and the direction in which the vehicle is boarded (backward facing). In the display device 100, the defining unit 82 of the dividing means 81 defines the central viewing angle θ _A and the peripheral viewing angle θ _B based on the age (under 1 year old) of the occupant H2, and divides each angle based on the line of sight E200. The position (the position indicated by the dashed-dotted lines L201 and L202) is defined. Then, the defining unit 82 defines the area inside the one-dot chain line L201 as the central visual field R201 of the occupant H2, and defines the area outside the one-dot chain line L201 and inside the two-dot chain line L202 as the peripheral visual field R202 of the occupant H2. Defined as Further, the sorting means 81 selects the roof trim 30, the pillar garnish 250, the rear seat 20, and the door trim 40 among the interior materials 2 based on the direction in which the passenger H2 gets in (backward).

The division unit 83 divides a portion of the selected interior material 2 positioned in the central visual field R201 of the occupant H2 as a central visual field portion 202A, and divides a portion positioned in the peripheral visual field R202 of the occupant H2 into a peripheral visual field portion. 202B. Specifically, the division portion 83 includes a portion 230A extending from directly above the rear seat 20 to the rear in the roof trim 30, a pillar garnish 250, an upper portion 220A of the headrest and seat back in the rear seat 20, and an upper end portion ( 240A and the like near the upper board are divided as a central visual field portion 202A. In addition, the division portion 83 includes a portion 230B slightly forward of the portion directly above the rear seat 20 in the roof trim 30, a portion 220B below the seat back in the rear seat 20, a lower rear portion 240B in the door trim 40, and the like, and a peripheral vision portion 202B. classified as

The changing unit 88 of the generating means 85 changes the color of the light ray C to a primary color based on the age of the occupant H2 (for example, when the age is less than 6 years old) in the selected image V0 (see FIG. 5). A change image V is generated as an image obtained by shifting the image. The display means 90 displays the changing image V by projecting it onto the peripheral visual field portion 202B. The display means 90 does not project the changing image V on the parts of the interior material 2 not selected based on the orientation of the passenger H2 (the driver's seat 10, the carpet 54) and the central visual field part 202A.

<Other embodiments>
The present disclosure is not limited to the embodiments described in the above description and drawings, and for example, the following embodiments are also included in the technical scope of the present disclosure. can be implemented by

(1) In the above embodiment, the display means projected and displayed the changing image onto the projection target (interior material) from the front side, but the present invention is not limited to this. For example, the display means may transmit and project the changing image from the inner side of the interior material toward the outer side (surface). For example, if the passenger is seated in the rear seat facing forward, the projector embedded inside the headrest of the driver's seat may transmit and project the changing image rearward.

(2) In the above-described embodiment, the dividing means divides the interior material into the central visual field portion and the peripheral visual field portion before generating the change image, but the present invention is not limited to this. For example, after generating the change image, the segmentation means may segment the interior material into a central vision portion and a peripheral vision portion. Further, the display means may project the changing image toward the peripheral visual field defined by the defining unit without the dividing unit dividing the interior material into the central visual field portion and the peripheral visual field portion.

(3) The vehicle display device exemplified in the above embodiments is not limited to vehicles, and may be provided in various vehicles. For example, the vehicle display device can be applied to trains and amusement vehicles as ground vehicles, airplanes and helicopters as flying vehicles, and ships and submarines as sea and undersea vehicles.

DESCRIPTION OF SYMBOLS 1... Automobile (vehicle), 2... Interior material (vehicle interior material), 2A, 202A... Central visual field part, 2B, 202B... Peripheral visual field part, 60... Occupant information acquisition means (acquisition means), 70... Vehicle information acquisition Means (acquisition means) 81 Classification means 85 Generation means 90 Display means 100 Display device (vehicle display device) E, E200 Line of sight H1, H2 Occupant R1, R201 Central visual field , R2, R202... Peripheral vision

Claims (5)

A vehicle display device for displaying an image on a vehicle interior material provided in a vehicle interior,
Acquisition means for acquiring occupant information about an occupant;
generating means for generating a changed image by changing components of a pre-stored image based on the occupant information;
and display means for displaying the changing image by projecting it onto the vehicle interior material. dividing means for dividing the vehicle interior material into a central visual field portion positioned in the central visual field of the occupant and a peripheral visual field portion positioned in the peripheral visual field which is a peripheral region of the central visual field,
2. The vehicle display device according to claim 1, wherein said display means displays said changing image in said peripheral vision portion. The acquisition means acquires a line of sight of the occupant as the occupant information,
3. The vehicle display device according to claim 2, wherein the dividing means divides the central visual field portion and the peripheral visual field portion based on the line of sight. The acquisition means acquires a speed of the vehicle as vehicle information related to the vehicle,
3. The generating means generates the changed image by changing the velocity of the constituent elements of the pre-stored image based on the velocity of the vehicle acquired by the acquiring means. The vehicle display device according to any one of claims 1 to 3. The acquisition means acquires, as the occupant information, the direction in which the occupant boarded the vehicle,
5. The vehicle display device according to any one of claims 1 to 4, wherein the display means changes a position where the changing image is displayed based on the direction in which the passenger gets on the vehicle. .

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