JP7445476B2 - Display control device, vehicle and display control method - Google Patents

Description

The present invention relates to a display control device, a vehicle, and a display control method.

Patent Document 1 discloses an information processing device that outputs advertisements via a display device provided outside a vehicle body.

JP2020-24514A

However, in Patent Document 1, advertisements cannot necessarily be provided accurately.

An object of the present invention is to provide a display control device, a vehicle, and a display control method that can accurately display content.

A display control device according to one aspect of the present invention includes a driving state determination unit that determines a driving state of a vehicle, and a display control unit that controls display of content in a display area facing outside the vehicle, When the driving state determination unit determines that the vehicle is running, the display control unit displays content in an achromatic color or a cool color in a display area that can be visually recognized from the rear of the vehicle. and restricts the display of warm color content in the display area that can be viewed from the rear of the vehicle.

A vehicle according to another aspect of the present invention includes the display control device as described above.

A display control method according to still another aspect of the present invention includes a driving state determining step of determining a driving state of a vehicle, and a display control step of controlling display of content in a display area facing outside the vehicle. However, in the display control step, if it is determined in the driving state determination step that the vehicle is traveling, an achromatic color or a cool color is applied to a display area that can be visually recognized from the rear of the vehicle. Display of content is permitted, and display of warm color content in the display area that can be viewed from the rear of the vehicle is restricted.

According to the present invention, it is possible to provide a display control device, a vehicle, and a display control method that can accurately display content.

FIG. 1 is a block diagram showing a vehicle equipped with a display control device according to an embodiment. It is a figure showing a vehicle. 3A and 3B are diagrams showing examples of running states. FIG. 3 is a diagram showing an area where the line of sight of the occupant of another vehicle located behind the own vehicle is concentrated. FIG. 3 is a diagram showing recommended line-of-sight positions for occupants of other vehicles located behind the host vehicle. 5 is a flowchart illustrating an example of the operation of the display control device according to one embodiment. 5 is a flowchart illustrating an example of the operation of the display control device according to one embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A display control device, a vehicle, and a display control method according to the present invention will be described in detail below by citing preferred embodiments and with reference to the accompanying drawings.

[One embodiment]
A display control device, a vehicle, and a display control method according to an embodiment will be described with reference to the drawings. FIG. 1 is a block diagram showing a vehicle equipped with a display control device according to this embodiment.

The vehicle (self-vehicle) 10 is equipped with a display control device 12, that is, a display control ECU (Electronic Control Unit). The vehicle 10 further includes an external sensor 14, a vehicle speed sensor 16, a communication section 20, an HMI (human machine interface) 22, a display section 24, a navigation device 30, and a positioning section 33. There is. The vehicle 10 is also equipped with components other than these components, but their description will be omitted here.

The outside world sensor 14 acquires information indicating the outside world situation of the vehicle 10, that is, outside world information. The external sensor 14 is equipped with a plurality of cameras 32 and a plurality of radars 34. The external sensor 14 further includes a plurality of LiDAR (Light Detection and Ranging, Laser Imaging Detection and Ranging) 36.

Information acquired by the camera (imaging unit) 32, that is, camera information, is supplied from the camera 32 to the display control device 12. Camera information includes photographing information and the like. The camera information constitutes external world information in conjunction with radar information and LiDAR information, which will be described later. Although one camera 32 is illustrated in FIG. 1, a plurality of cameras 32 are actually provided.

The radar 34 emits a transmitted wave toward the outside of the vehicle 10, and receives a reflected wave of the transmitted wave that is reflected by a detection object and returns. Examples of the transmitted waves include electromagnetic waves. Examples of electromagnetic waves include millimeter waves. The radar 34 generates radar information (reflected wave signal) based on reflected waves and the like. The radar 34 supplies the generated radar information to the display control device 12. In FIG. 1, one radar 34 is illustrated, but in reality, the vehicle 10 is equipped with a plurality of radars 34. Note that the radar 34 is not limited to a millimeter wave radar. For example, a laser radar, an ultrasonic sensor, or the like may be used as the radar 34.

The LiDAR 36 continuously emits a laser in all directions of the vehicle 10, measures the three-dimensional position of the reflection point based on the reflected wave of the emitted laser, and outputs information regarding the three-dimensional position, that is, three-dimensional information. do. The LiDAR 36 supplies the three-dimensional information, that is, LiDAR information, to the display control device 12. Although one LiDAR 36 is illustrated in FIG. 1, in reality, the vehicle 10 is equipped with a plurality of LiDARs 36.

Vehicle speed sensor 16 can detect the speed of vehicle 10, that is, the vehicle speed. Information detected by the vehicle speed sensor 16, ie, information indicating the vehicle speed, can be supplied to the display control device 12.

The communication unit 20 performs wireless communication with an external device (not shown). The external device may include, for example, an external server (not shown).

The HMI 22 receives operation inputs from the occupant, and provides various information to the occupant visually, audibly, or tactilely. The HMI 22 may include, for example, a display (not shown) and a speaker (not shown).

As the display section 24, for example, a liquid crystal display, an organic EL display, an LED matrix, etc. can be used, but the present invention is not limited thereto. The display section 24 may be configured by a projector. When the display unit 24 is configured by a projector, the projector may be placed inside the vehicle 10 and content may be projected onto a window provided in the vehicle 10. The display section 24 is provided with a display area 70 facing outward of the vehicle 10, that is, toward the outside of the vehicle. FIG. 2 is a diagram showing the vehicle. A rear portion 10B of the vehicle 10 is shown in FIG. The rear portion 10B of the vehicle 10 is provided with, for example, a back door 80. As shown in FIG. 2, a display area 70 is provided at the rear part 10B of the vehicle 10, specifically, at the back door 80. More specifically, the display area 70 is provided on the outer surface of the back door 80. Since the display area 70 of the display unit 24 is provided in the rear part 10B of the vehicle 10, the display area 70 can be visually recognized from the rear of the vehicle 10. Content such as advertisements may be displayed in the display area 70 of the display unit 24. Such content may consist of, for example, one or more images, but is not limited thereto. Although the display area 70 that can be viewed from the rear of the vehicle 10 is shown here, the vehicle 10 may further include a display area (not shown) that can be viewed from the side of the vehicle 10 or the like.

The navigation device 30 is equipped with a GNSS (Global Navigation Satellite System) sensor (not shown). Further, the navigation device 30 is further provided with an arithmetic unit (not shown) and a storage unit (not shown). The GNSS sensor detects the current position of the vehicle 10. The calculation unit reads map information corresponding to the current position detected by the GNSS sensor from the map database stored in the storage unit. The calculation unit can determine a target route from the current position to the destination using the map information. The navigation device 30 can output the created target route to the display control device 12. The navigation device 30 can supply position information of the vehicle 10, route information, map information, etc. to the display control device 12.

The positioning unit 33 is equipped with a GNSS 48. The positioning unit 33 further includes an IMU (Inertial Measurement Unit) 50 and a map database (map DB) 52. The positioning unit 33 specifies the position of the vehicle 10 by appropriately using information obtained by the GNSS 48, information obtained by the IMU 50, and map information stored in the map database 52. The positioning unit 33 can supply own vehicle position information, which is information indicating the position of the vehicle 10, to the display control device 12. Furthermore, the positioning unit 33 can supply map information to the display control device 12.

The display control device 12 includes a calculation section 54 and a storage section 56. The calculation unit 54 controls the entire display control device 12 . The calculation unit 54 may be configured by, for example, one or more processors. As such a processor, for example, a CPU (Central Processing Unit) or the like may be used. The calculation unit 54 executes display control by controlling each unit based on a program stored in the storage unit 56.

The calculation unit 54 includes a control unit 57, a driving state determination unit 58, a display control unit 60, and a lane determination unit 62. The control unit 57, the driving state determination unit 58, the display control unit 60, and the lane determination unit 62 can be realized by the calculation unit 54 executing a program stored in the storage unit 56.

The storage unit 56 includes a volatile memory (not shown) and a nonvolatile memory (not shown). Examples of volatile memory include RAM (Random Access Memory) and the like. Examples of nonvolatile memory include ROM (Read Only Memory) and flash memory. External world information, vehicle behavior information, vehicle operation information, etc. are stored in volatile memory, for example. Programs, tables, maps, etc. are stored in, for example, non-volatile memory. Furthermore, data regarding content such as advertisements is stored in, for example, a nonvolatile memory.

The control unit 57 controls the entire display control device 12 .

The driving state determination unit 58 can determine the driving state of the vehicle 10. The driving state determining unit 58 can determine the driving state of the vehicle 10 based on, for example, information supplied from the vehicle speed sensor 16, that is, information indicating the vehicle speed, but is not limited thereto.

The display control unit 60 can control the display of content on the display area 70 of the display unit 24. When the driving state determination unit 58 determines that the vehicle 10 is traveling, the display control unit 60 displays content in achromatic or cool colors to the display area 70 that can be viewed from the rear of the vehicle 10. Display of warm color content in the display area 70 that can be viewed from the rear of the vehicle 10 can be restricted. When the vehicle 10 is not running, for example, when the vehicle 10 is parked, the display control unit 60 allows warm color content to be displayed in the display area 70 that can be viewed from the rear of the vehicle 10. It is possible. At this time, the display control unit 60 may also allow content in an achromatic color or a cool color to be displayed in the display area 70 that can be viewed from the rear of the vehicle 10.

In this embodiment, when the vehicle 10 is running, the display of warm color content in the display area 70 that can be seen from the rear of the vehicle 10 is restricted for the following reasons. be. That is, the lighting color of tail lights, brake lights, direction indicator lights, etc. is a warm color such as red. For this reason, when content in warm colors is displayed in the display area 70 that can be viewed from the rear of the vehicle 10, it may lead to a misunderstanding that the tail lights, brake lights, turn signal lights, etc. are turned on. That is, the occupant (driver, user) of the other vehicle 90 (see FIG. 3A) located behind the host vehicle 10 may see warm color content and the lighting of taillights, brake lights, turn signal lights, etc. easy to confuse. For this reason, in this embodiment, when the vehicle 10 is running, display of warm color content in the display area 70 that can be viewed from behind the vehicle 10 is restricted.

In this embodiment, the reason why content in achromatic colors or cool colors is allowed to be displayed in the display area 70 that can be visually recognized from behind the vehicle 10 even when the vehicle 10 is running is as follows. This is due to That is, as described above, the lighting colors of taillights, brake lights, direction indicator lights, etc. are warm colors. Therefore, content in achromatic colors or cool colors is unlikely to be mistaken for lighting of taillights, brake lights, turn signal lights, or the like. That is, the occupants of the other vehicle 90 located behind the host vehicle 10 are unlikely to confuse achromatic or cool color content with the lighting of taillights, brake lights, turn signal lights, and the like. For this reason, in this embodiment, when the vehicle 10 is running, content in an achromatic color or a cool color is allowed to be displayed in the display area 70 that can be visually recognized from the rear of the vehicle 10.

In this embodiment, the reason why content in warm colors is allowed to be displayed in the display area 70 that can be seen from the rear of the vehicle 10 when the vehicle 10 is not running is as follows. . That is, when the vehicle 10 is not running, for example, when the vehicle 10 is parked, the content in warm colors is displayed in the display area 70 that can be seen from the rear of the vehicle 10, such as the tail lights and brake lights. , even if it is mistaken for the lighting of a direction indicator light, etc., no particular problem will occur. For this reason, in this embodiment, when the vehicle 10 is not running, warm color content is allowed to be displayed in the display area 70 that can be viewed from behind the vehicle 10.

The lane determining unit 62 can determine whether the lane in which the vehicle 10 is traveling is a curved road 92B. For example, the lane determination unit 62 can determine whether or not the lane in which the vehicle 10 is traveling is a curved road 92B based on external world information supplied from the external world sensor 14, but the present invention is not limited to this. isn't it. For example, it is determined whether the lane in which the vehicle 10 is traveling is on the curved road 92B based on information supplied from the navigation device 30, information supplied from an external device via the communication unit 20, etc. It may be possible to do so.

When the lane in which the vehicle 10 is traveling is not the curved road 92B, the display control unit 60 can restrict switching of images forming the content displayed in the display area 70 that can be viewed from behind the vehicle 10. On the other hand, when the lane in which the vehicle 10 is traveling is a curved road 92B, the display control unit 60 allows switching of images constituting the content displayed in the display area 70 that can be viewed from behind the vehicle 10. do.

In this embodiment, when the lane in which the host vehicle 10 is traveling is not a curved road 92B (see FIG. 3B), the images constituting the content displayed in the display area 70 that can be viewed from behind the host vehicle 10 are switched. The reason for this restriction is as follows. That is, when the lane in which the host vehicle 10 is traveling is a straight road 92A (see FIG. 3A), switching of images constituting the content displayed in the display area 70 that can be viewed from behind the host vehicle 10 is restricted. The reason for this is as follows. FIG. 3A is a diagram showing an example of a running state. FIG. 4 is a diagram showing a region where the line of sight of the occupants of another vehicle located behind the own vehicle is concentrated. An example of a state in which the host vehicle 10 is traveling on a straight road 92A is shown in FIGS. 3A and 4. An area 94 shown in FIG. 4 indicates an area where the line of sight of the occupants of the other vehicle 90 located behind the host vehicle 10 is focused. As shown in FIG. 4, when the own vehicle 10 is traveling on a straight road, the line of sight of the occupant of another vehicle 90 located behind the own vehicle 10 is concentrated on an area 94 near the own vehicle 10. Tend. Therefore, when the lane in which the host vehicle 10 is traveling is the straight road 92A, when switching the image constituting the content displayed in the display area 70 that can be visually recognized from behind the host vehicle 10, the corresponding Occupants of other vehicles 90 located behind own vehicle 10 may not be able to fully concentrate on driving. For this reason, in this embodiment, when the lane on which the host vehicle 10 is traveling is not the curved road 92B, that is, when it is the straight road 92A, the display area 70 that can be visually recognized from behind the host vehicle 10 is It is possible to restrict switching of images that make up the content displayed on the screen.

In this embodiment, when the lane in which the host vehicle 10 is traveling is a curved road 92B, switching of images constituting the content displayed in the display area 70 that can be viewed from behind the host vehicle 10 is permitted. This is due to the following reasons. FIG. 3B is a diagram showing an example of a running state. FIG. 5 is a diagram showing recommended line-of-sight positions for occupants of other vehicles located behind the own vehicle. An example of a state in which the host vehicle 10 is traveling on a curved road 92B is shown in FIGS. 3B and 5. Generally, when driving on the curved road 92B, it is recommended that the driver directs his/her line of sight toward the distant region 96B rather than the nearby region 96A. This is because by directing the driver's line of sight toward the distant area 96B, the passenger can easily notice changes in the surrounding environment, such as changes in the curvature of the curved road 92B, and can quickly respond to the environmental change. . Therefore, when the lane in which the host vehicle 10 is traveling is the curved road 92B, compared to the case where the lane in which the host vehicle 10 is traveling is the straight road 92A, there is a possibility that the lane behind the host vehicle 10 is The line of sight of the occupant of the other vehicle 90 located there tends to be more likely to move away from the own vehicle 10. That is, when the lane in which the host vehicle 10 is traveling is a curved road 92B, compared to the case where the lane in which the host vehicle 10 is traveling is a straight road 92A, the vehicle 10 is located further behind the host vehicle 10. The attention of the occupants of the other vehicle 90 is likely to be diverted from the own vehicle 10. Therefore, even if the images constituting the content displayed in the display area 70 that can be viewed from behind the host vehicle 10 are switched, the occupants of the other vehicle 90 located behind the host vehicle 10 are unable to concentrate on driving. Power is less likely to decrease. For these reasons, in this embodiment, when the lane in which the host vehicle 10 is traveling is the curved road 92B, the content displayed in the display area 70 that can be viewed from behind the host vehicle 10 is configured. Image switching may be allowed.

FIG. 6 is a flowchart showing an example of the operation of the display control device according to this embodiment. FIG. 6 shows an operation related to restricting the display of warm color content.

In step S1, the driving state determination unit 58 determines whether the vehicle 10 is traveling. If the vehicle 10 is running (YES in step S1), the process moves to step S2. If the vehicle 10 is not running (NO in step S1), the process moves to step S3.

In step S2, the display control unit 60 restricts the display of warm color content in the display area 70 that can be viewed from the rear of the vehicle 10. The display control unit 60 allows content in an achromatic color or a cool color to be displayed in a display area 70 that can be viewed from the rear of the vehicle 10 .

In step S3, the display control unit 60 allows content in warm colors to be displayed in the display area 70 that can be viewed from the rear of the vehicle 10. At this time, the display control unit 60 also allows content in achromatic colors or cool colors to be displayed in the display area 70 that can be viewed from the rear of the vehicle 10. In this way, the processing shown in FIG. 6 is executed.

FIG. 7 is a flowchart illustrating an example of the operation of the display control device according to this embodiment. FIG. 7 shows an operation related to restricting switching of images forming the content.

In step S11, the lane determining unit 62 determines whether the lane in which the vehicle 10 is traveling is a curved road 92B. If the lane in which the vehicle 10 is traveling is the curved road 92B (YES in step S11), the process moves to step S12. If the lane in which the vehicle 10 is traveling is the straight road 92A (NO in step S11), the process moves to step S13.

In step S12, the display control unit 60 allows switching of images constituting the content displayed in the display area 70 that can be viewed from the rear of the vehicle 10.

In step S13, the display control unit 60 restricts switching of images forming the content displayed in the display area 70 that can be viewed from the rear of the vehicle 10. In this way, the process shown in FIG. 7 is executed.

As described above, according to the present embodiment, when the vehicle 10 is traveling, display of achromatic or cool color content in the display area 70 that can be viewed from the rear of the vehicle 10 is allowed, Display of warm color content in the display area 70 is restricted. Therefore, according to the present embodiment, it is possible to prevent the occupants of the other vehicle 90 located behind the own vehicle 10 from misperceiving that the tail lights, brake lights, turn signal lights, etc. are turned on. . That is, according to the present embodiment, it is possible to provide the display control device 12 that can accurately display content.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the present invention.

The above embodiments can be summarized as follows.

The display control device (12) includes a driving state determination section (58) that determines the traveling state of the vehicle (10), and a display control section that controls display of content in a display area (70) facing outside the vehicle. (60), when the driving state determination unit determines that the vehicle is running, the display control unit displays an achromatic color or a display area visible from the rear of the vehicle. Displaying content in cool colors is permitted, and displaying content in warm colors in the display area that can be viewed from the rear of the vehicle is restricted. According to such a configuration, when the vehicle is running, content in an achromatic color or a cool color is allowed to be displayed in a display area that can be seen from the rear of the vehicle, and content in a warm color is displayed in the display area. The display of content with a certain color is restricted. Therefore, with this configuration, it is possible to prevent occupants of other vehicles located behind the own vehicle from misperceiving the lighting of taillights, brake lights, direction indicator lights, and the like. That is, according to such a configuration, it is possible to provide a display control device that can accurately display content.

The display control unit further includes a lane determination unit (62) that determines whether the lane in which the vehicle is traveling is a curved road (92B), and the display control unit is configured to determine whether the lane in which the vehicle is traveling is a curved road (92B). If the lane on which the vehicle is traveling is the curved road, switching of images constituting the content displayed in the display area that can be viewed from the rear of the vehicle is restricted; The above may allow the switching of images constituting the content displayed in the display area that can be viewed from the rear of the vehicle. When the lane in which the own vehicle is traveling is a straight road, when switching the images that make up the content displayed in the display area that can be seen from behind the own vehicle, the image that is located behind the own vehicle Occupants of other vehicles may not be able to fully concentrate on driving. On the other hand, when the lane in which the host vehicle is traveling is a curved road, the occupants of the other vehicle 90 located behind the host vehicle tend to pay attention to the situation farther away than the position of the vehicle 10. . Therefore, even if the images constituting the content displayed in the display area that can be seen from behind the own vehicle are switched, the occupants of other vehicles located behind the own vehicle may lose their concentration on driving. Hateful. That is, according to such a configuration, it is possible to provide a display control device that can display content more accurately. Further, according to such a configuration, since the images forming the content can be switched, the amount of information that can be provided using the display section can be increased.

The vehicle is equipped with a display control device as described above.

The display control method includes a driving state determining step (S1) for determining a driving state of the vehicle, and a display control step (S2, S3) for controlling display of content in a display area facing outside the vehicle. However, in the display control step, if it is determined in the driving state determination step that the vehicle is traveling, an achromatic color or a cool color is applied to a display area that can be visually recognized from the rear of the vehicle. Display of content is permitted, and display of warm color content in the display area that can be viewed from the rear of the vehicle is restricted (S2).

The display control method further includes a lane determination step (S11) of determining whether the lane in which the vehicle is traveling is a curved road, and in the display control step, the lane in which the vehicle is traveling is determined to be a curved road. is not the curved road, the switching of images constituting the content displayed in the display area that can be viewed from behind the vehicle is restricted (S13), and the lane in which the vehicle is traveling is If the road is a curve, the switching of the images constituting the content displayed in the display area that can be viewed from the rear of the vehicle is allowed (S12).

10: Vehicle, own vehicle 10B: Rear part 12: Display control device 14: External world sensor 16: Vehicle speed sensor 20: Communication unit 24: Display unit 30: Navigation device 32: Camera 33: Positioning unit 34: Radar 52: Map database 54: Arithmetic unit 56: Storage unit 57: Control unit 58: Driving state determination unit 60: Display control unit 62: Lane determination unit 70: Display area 80: Back door 90: Other vehicle 92A: Straight road 92B: Curved road 94, 96A, 96B: Area

Claims (5)

a driving state determination unit that determines the driving state of the vehicle;
a display control unit that controls display of content in a display area facing outside the vehicle;
Equipped with
When the driving state determination unit determines that the vehicle is running, the display control unit displays achromatic content in a display area that can be viewed from the rear of the vehicle and displays cool color content. and restricting the display of warm color content to the display area that can be viewed from the rear of the vehicle;
The warm colors include red, orange, and yellow,
The cold colors include blue-green, blue, and blue-violet,
further comprising a lane determination unit that determines whether the lane in which the vehicle is traveling is a curved road;
The display control unit limits switching of images constituting the content displayed in the display area that can be viewed from behind the vehicle when the lane in which the vehicle is traveling is not the curved road. , when the lane on which the vehicle is traveling is the curved road, a display that allows the switching of the images constituting the content displayed in the display area that can be viewed from behind the vehicle; Control device. a driving state determination unit that determines the driving state of the vehicle;
a display control unit that controls display of content in a display area facing outside the vehicle;
a lane determination unit that determines whether the lane in which the vehicle is traveling is a curved road ;
Equipped with
The display control unit limits switching of images constituting the content displayed in the display area that can be viewed from behind the vehicle when the lane in which the vehicle is traveling is not the curved road. , when the lane on which the vehicle is traveling is the curved road, a display that allows the switching of the images constituting the content displayed in the display area that can be viewed from behind the vehicle; Control device. A vehicle comprising the display control device according to claim 1 or 2. a driving state determination step for determining the driving state of the vehicle;
a display control step for controlling display of content in a display area facing outside the vehicle;
In the display control step, if it is determined in the driving state determining step that the vehicle is traveling, displaying achromatic content in a display area that can be viewed from the rear of the vehicle and displaying a cool color content. and restricting the display of warm color content to the display area that can be viewed from the rear of the vehicle;
The warm colors include red, orange, and yellow,
The cold colors include blue-green, blue, and blue-violet,
further comprising a lane determining step of determining whether the lane in which the vehicle is traveling is a curved road;
In the display control step, when the lane in which the vehicle is traveling is not the curved road, switching of images constituting the content displayed in the display area that can be viewed from behind the vehicle is restricted. , when the lane on which the vehicle is traveling is the curved road, a display that allows the switching of the images constituting the content displayed in the display area that can be viewed from behind the vehicle; Control method. a driving state determination step for determining the driving state of the vehicle;
a display control step of controlling display of content in a display area facing outside the vehicle;
a lane determining step of determining whether the lane in which the vehicle is traveling is a curved road ;
has
In the display control step, when the lane in which the vehicle is traveling is not the curved road, switching of images constituting the content displayed in the display area that can be viewed from behind the vehicle is restricted. , when the lane on which the vehicle is traveling is the curved road, a display that allows the switching of the images forming the content displayed in the display area that can be viewed from behind the vehicle; Control method.

Images