JP2022184329A - Managing device, managing system and managing method - Google Patents

Abstract

To provide a managing device, a managing system and a managing method which reduce, when a passerby visually recognizes content displayed on the display of a vehicle, the possibility that the passerby still cannot grasp the detail of the content.SOLUTION: A managing server 1 includes a managing unit 11 that causes, when one vehicle is running and the other vehicle is running behind such one vehicle, and when there is a passerby who visually recognizes one content displayed on the display of the one vehicle, content that has consistency or continuity with the one content to be displayed on the display of the other vehicle. Hence, the passerby who visually recognizes given content is enabled to visually recognize the same content as such content by utilizing the rear vehicle.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to a management device, a management system, and a management method, and particularly includes a management device for managing a vehicle having a display capable of displaying content on its exterior, an in-vehicle device mounted on the vehicle, and the management device. It is suitable for use in a management system and a management method by the management device.

2. Description of the Related Art Conventionally, there are vehicles provided with a display (for example, a liquid crystal display or an organic EL panel) capable of displaying an image (either a still image or a moving image) on the exterior. Such vehicles are driven on roads with contents (for example, advertisements) displayed on their displays to provide the contents to passersby. Regarding this type of vehicle, Patent Literature 1 discloses a technique of acquiring the environment around the vehicle and controlling the display contents of a display (vehicle exterior display unit) according to the environment.

WO2018/230704

However, conventionally, there have been the following problems in providing content to passers-by by running on a road with content displayed on the display. In other words, even though a passerby may have seen the content displayed on the display of the vehicle and become interested in it, the vehicle has moved before the passerby can understand the content, and the passerby can see the content. As a result, there have been cases where passers-by have not been able to grasp the contents of the content. If such a situation occurs, an advertising opportunity may be lost, for example, if the content is an advertisement.

The present invention has been made to solve such a problem, and when a passerby visually recognizes the content displayed on the display of the vehicle, the passerby remains unable to grasp the contents of the content. The purpose is to reduce the possibility of

In order to solve the above-described problems, in the present invention, when one vehicle is running and another vehicle is running behind the one vehicle, one vehicle is displayed on the display of the one vehicle. When there is a passerby who visually recognizes the content of the other vehicle, content having the same identity or continuity with the one content is displayed on the display of the other vehicle.

According to the present invention configured as described above, when a passerby visually recognizes the content displayed on the display of one vehicle, other vehicles behind the one vehicle are notified of the identity or continuity of the content. content with is displayed. Therefore, even after the vehicle has moved, passers-by can use the vehicle behind the vehicle to obtain content that is identical or continuous to the content displayed on the display of the vehicle. can be continuously viewed to confirm the contents. Therefore, it is possible to reduce the possibility that a passerby will remain unable to grasp the contents of the content.

It is a figure which shows an example of a target vehicle. It is a figure showing an example of composition of a management system concerning one embodiment of the present invention. 2 is a block diagram showing an example of the functional configuration of each device that constitutes the management system according to one embodiment of the present invention; FIG. It is a figure which shows an example of picked-up image data. FIG. 4 is a diagram showing the contents of vehicle status notification data; It is a figure utilized for description of a 1st target state. It is a correspondence table between viewing time and vehicle speed. It is a figure utilized for description of a 2nd target state. It is a figure utilized for description of a 2nd target state. It is a figure utilized for description of the 1st modification of a 2nd target state. 4 is a flow chart showing an operation example of a management server according to one embodiment of the present invention;

An embodiment of the present invention will be described below with reference to the drawings. First, a vehicle 2 (hereinafter referred to as a "target vehicle 2") to be managed by a management server 1 (corresponding to a "management device" in the scope of claims) according to the present embodiment will be described. The target vehicle 2 is a vehicle provided with a target vehicle display 3 (corresponding to a "display" in the scope of claims) on its exterior. The target vehicle display 3 is a display device capable of displaying an image (either a still image or a moving image). The target vehicle display 3 is provided on the exterior of the target vehicle 2 in such a manner that its image display area can be visually recognized by passers-by outside the vehicle.

Any type of display may be used, and for example, a liquid crystal display or an organic EL display may function as the target vehicle display 3 . Alternatively, a projection type display is adopted in which the window glass, which is a part of the exterior of the target vehicle 2, is used as the target vehicle display 3, and an image is projected onto the window glass from inside the vehicle so that the image can be viewed from outside the vehicle. You may Further, the aspect (position, direction, shape, size, etc.) in which the target vehicle display 3 is provided on the target vehicle 2 is not limited. In addition, the target vehicle 2 is not limited to a vehicle that is driven and moved by a human. It may be a running autonomous vehicle.

FIG. 1A is a diagram schematically showing an example of the target vehicle 2. FIG. In the example of FIG. 1A, the target vehicle 2 is a truck-type vehicle having a van, and the target vehicle display 3 is provided in a wide area (exterior) on the left side of the van. Although not shown in FIG. 1A, a target vehicle display 3 is also provided on the right side of the van. The image display area of the target vehicle display 3 is exposed to the outside and can be visually recognized by passers-by outside the vehicle.

As shown in FIG. 1(A), in the subject vehicle 2 of FIG. 1(A), the camera 4 is provided below the subject vehicle display 3 and in the center of the image display area in the front-rear direction. The significance of the camera 4 will be described later. FIG. 1B is a diagram schematically showing another example of the target vehicle 2. As shown in FIG. In the example of FIG. 1B, the target vehicle 2 is a sedan type vehicle, and the target vehicle display 3 is provided on the door panel (exterior) of the side door of the door. However, the two target vehicles 2 illustrated in FIG. 1 are merely examples.

FIG. 2 is a diagram showing a configuration example of the management system 5 according to this embodiment. As shown in FIG. 2 , the management system 5 includes a management server 1 , a plurality of in-vehicle devices 7 and a plurality of digital signages 8 . The management server 1, the plurality of in-vehicle devices 7, and the plurality of digital signages 8 are each connected to a network N including the Internet, a telephone network, and other communication networks.

The management server 1 is a server device that provides various services. Although FIG. 2 and FIG. 3 described later show the management server 1 as one block, this does not mean that the management server 1 is composed of a single device. device, or may be part of a given system.

The in-vehicle device 7 is a device mounted on the target vehicle 2 . The in-vehicle device 7 has a function of accessing the management server 1 via the network N. FIG. The in-vehicle device 7 does not have to be a dedicated device that executes the processing described later. As an example, a car navigation device or a portable terminal brought into the target vehicle 2 can function as the in-vehicle device 7 .

The digital signage 8 is a device that includes a digital signage display 9 and is fixedly installed at an installation location. The digital signage display 9 is a liquid crystal display, organic EL display, projector device, or other display device. The digital signage 8 displays advertisements, news, weather forecasts, and other contents on the digital signage display 9, and provides the contents to those who view the digital signage display 9 (for example, passers-by passing around the digital signage 8). do. The digital signage 8 is provided, for example, as a dedicated device on the road, and is attached to, for example, an indoor or outdoor object (eg, an outer wall or inner wall of a building, a pillar of a building, etc.).

FIG. 3 is a block diagram showing a functional configuration example of the management server 1, the in-vehicle device 7 and the digital signage 8. As shown in FIG. As shown in FIG. 3 , the management server 1 includes a server communication section 10 and a management section 11 . The in-vehicle device 7 includes an in-vehicle device communication section 12 and an in-vehicle device control section 13 . The digital signage 8 includes a digital signage communication section 14 and a digital signage control section 15 . Each of the functional blocks 10 to 15 can be configured by hardware, DSP (Digital Signal Processor), or software. For example, when configured by software, each of the functional blocks 10 to 15 is actually configured with a CPU, RAM, ROM, etc. of a computer, and a program stored in a recording medium such as RAM, ROM, hard disk, or semiconductor memory. is realized by the operation of

As shown in FIG. 3, the management server 1 has a server storage section 20 as a storage section. The in-vehicle device 7 includes an in-vehicle device storage unit 21 as a storage unit. The digital signage 8 has a digital signage storage unit 22 as a storage unit.

The server communication unit 10 of the management server 1 communicates with various devices connected to the network N according to a predetermined communication standard. In the following explanation, it is assumed that the communication using the network N by the management server 1 is properly performed by the function of the server communication unit 10 . An in-vehicle device communication unit 12 of the in-vehicle device 7 communicates with various devices connected to the network N according to a predetermined communication standard. In the following description, it is assumed that the communication using the network N by the in-vehicle device 7 is properly performed by the function of the in-vehicle device communication section 12 . A digital signage communication unit 14 of the digital signage 8 communicates with various devices connected to the network N according to a predetermined communication standard. In the following description, it is assumed that communication using the network N by the digital signage 8 is properly performed by the digital signage communication unit 14 .

As shown in FIG. 3, the in-vehicle device control unit 13 is connected to the target vehicle display 3 and the camera 4, as well as a vehicle speed detection unit 25 and a position/orientation detection unit 26. As shown in FIG. Although FIG. 3 shows the target vehicle display 3 as one block, one target vehicle 2 may be provided with two or more target vehicle displays 3 . The same is true for the camera 4 as well.

The camera 4 is a photographing device whose photographing range includes at least a predetermined area facing the image display area of the target vehicle display 3 . The predetermined area facing the image display area is an area determined from the viewpoint of an area in which a passerby who visually recognizes the content displayed on the target vehicle display 3 may exist. The camera of the target vehicle 2 illustrated in FIG. 1A is also provided for the purpose of capturing an area in which a passerby viewing the content displayed on the target vehicle display 3 may exist.

The vehicle speed detection unit 25 detects the vehicle speed of the own vehicle, and outputs vehicle speed information indicating the vehicle speed to the in-vehicle device control section 13 at predetermined intervals. The vehicle speed detection unit 25 is, for example, a unit that includes a sensor for detecting vehicle speed pulses and a control device for this sensor, and is an ECU that controls various mechanisms of the own vehicle.

The position and orientation detection unit 26 has a GPS unit, a gyro sensor and an acceleration sensor. The position/orientation detection unit 26 outputs vehicle position-related information indicating the position of the vehicle, the relative orientation of the vehicle, and the acceleration acting on the vehicle to the in-vehicle device control unit 13 at predetermined intervals. In this embodiment, the position of the vehicle (target vehicle 2) included in the vehicle position-related information is a position on the map represented by latitude and longitude. Hereinafter, the position of the vehicle (target vehicle 2) is particularly referred to as "vehicle map position".

A digital signage display 9 is connected to the digital signage control unit 15 .

As described above, the target vehicle 2 is provided with one or more target vehicle displays 3, and content can be displayed on the target vehicle displays 3 while the target vehicle 2 is traveling on the road. Note that the target vehicle 2 running on the road does not mean that the target vehicle 2 is physically moving on the road, but means that the target vehicle 2 is moving or stopping on the road according to the rules. . Further, in the present embodiment, the content displayed on the target vehicle display 3 does not mean the generic name of the target displayed on the target vehicle display 3, but distinguishes the target displayed on the target vehicle display 3 according to its content. It means each object of time. Therefore, the advertisement content for product A (substance is a moving image or still image) and the advertisement content for product B, which is different from product A, are independent and different contents. Hereinafter, the content displayed on the target vehicle display 3 may be referred to as "display content", and the content displayed on the target vehicle display 3 of the target vehicle 2 is simply referred to as "the display content is displayed on the target vehicle 2. There are cases where expressions such as "will be One piece of content is, for example, advertisements for products, events, and other events, and also, for example, news, weather forecasts, and other useful information.

The purpose of displaying the content on the target vehicle display 3 while the target vehicle 2 is traveling on the road is to have passers-by visually recognize the content displayed on the target vehicle display 3 and to provide the content to the passerby. done. In recent years, with the spread of MaaS, attention has been focused on the effectiveness of using various mobile objects (including vehicles, of course) as advertising media. are expected to become more prevalent. In the following description, driving the target vehicle 2 on a road with content displayed on the target vehicle display 3 is referred to as "content display running".

First, basic processing of the in-vehicle device 7 when displaying content on the target vehicle display 3 will be described. When starting to display content on the target vehicle display 3 (hereinafter, the content about to start displaying is referred to as "start content"), the in-vehicle device control unit 13 of the in-vehicle device 7 sets the content ID of the start content to recognize. A content ID is identification information for identifying content, and a unique value is assigned to each content. Next, the in-vehicle device control section 13 refers to the in-vehicle device content database 28 stored in the in-vehicle device storage section 21 .

The in-vehicle device content database 28 is a database in which content-related data is registered in association with a content ID for each content. The content-related data is data including information necessary for the in-vehicle device control unit 13 to display content on the target vehicle display 3 . Content-related data includes at least image files of the content. The image file is a file in a predetermined format for still images when the content is a still image, and is a file in a predetermined format for moving images when the content is a moving image.

After referring to the in-vehicle device content database 28 , the in-vehicle device control unit 13 acquires content-related data associated with the content ID of the start content in the in-vehicle device content database 28 . Next, the in-vehicle device control unit 13 displays the start content on the target vehicle display 3 based on the acquired content-related data.

As described above, when displaying a certain content on the target vehicle display 3, the in-vehicle device control unit 13 refers to the in-vehicle device content database 28, acquires the content-related data corresponding to the content from the in-vehicle device content database 28, and acquires the content-related data. Contents are displayed on the target vehicle display 3 based on the obtained content-related data. Note that the in-vehicle device control unit 13 performs similar processing when switching the display content to another content while displaying certain content on the target vehicle display 3 . That is, the vehicle-mounted device control unit 13 acquires content-related data corresponding to the other content from the vehicle-mounted device content database 28, and switches the display content to the other content based on the acquired content-related data.

Next, the processing executed by the in-vehicle device 7 while the content display is running will be described together with the processing of the management server 1. FIG. While the content display is running, the in-vehicle device control unit 13 of the in-vehicle device 7 executes the following processing at each timing that arrives at a predetermined cycle. Processing executed by the in-vehicle device control unit 13 at one timing (hereinafter referred to as “attention timing”) will be described below.

The in-vehicle device control section 13 inputs vehicle speed information from the vehicle speed detection unit 25 at the attention timing. The vehicle speed information input here is information indicating the vehicle speed of the target vehicle 2 at the attention timing.

Further, at the attention timing, the in-vehicle device control section 13 inputs the host vehicle position-related information from the position and orientation detection unit 26 . The host vehicle position-related information input here is information indicating the vehicle map position of the target vehicle 2 at the target timing, the relative orientation of the target vehicle 2 , and the acceleration acting on the target vehicle 2 . The in-vehicle device control unit 13 utilizes the map data 29 stored in the in-vehicle device storage unit 21, and based on the input own vehicle position related information, the link ID of the road on which the target vehicle 2 travels and the progress of the target vehicle 2. An absolute azimuth of a direction (hereinafter referred to as "vehicle traveling azimuth") is detected. The map data 29 is a database that holds information about links and nodes that make up the road network.

Furthermore, at the attention timing, the in-vehicle device control unit 13 executes passerby-related processing. The passerby-related processing will be described in detail below. As described above, the target vehicle 2 is provided with the camera 4 . The camera 4 includes at least an area in which a passerby viewing the display content of the target vehicle 2 may be present in the photographing range. In the passerby-related processing, the in-vehicle device control unit 13 receives photographed image data from the camera 4, analyzes the photographed image data, and determines whether or not there is a passerby visually recognizing the display 3 of the target vehicle.

In the following description of passerby-related processing, processing executed by the in-vehicle device control section 13 based on captured image data input from one camera 4 will be described for the sake of simplicity. Therefore, when a plurality of cameras 4 are provided, the in-vehicle device control section 13 executes the following processing for each camera 4. FIG. In addition, the camera 4, like the target vehicle 2 illustrated in FIG. 1A, shoots in the direction in which the image display area faces the central portion in the width direction of the image display area of the target vehicle display 3. (That is, the orientation of the image display area of the target vehicle display 3 and the orientation of the optical axis of the camera 4 are the same).

FIG. 4 is a diagram schematically showing an example of photographed image data. Referring to FIG. 4, the processing for determining whether or not a passerby is viewing the content displayed on the display 3 of the target vehicle will be described in detail. It is determined whether or not a human face image (hereinafter referred to as "face image") is recorded in the data. If no face image is recorded, the in-vehicle device control unit 13 determines that there is no passerby visually recognizing the target vehicle display 3 . On the other hand, when one or more face images are recorded, the in-vehicle device control unit 13 determines whether the area of a rectangular frame (hereinafter referred to as a “face frame”) surrounding the face image is a certain size or more for each face image. determine whether there is Reference numeral 4R in FIG. 4 indicates a face frame. This determination is a process for eliminating the determination that a passerby who is too far away from the target vehicle 2 to visually recognize the content displayed on the target vehicle display 3 is visually recognizing the content. , may not be executed.

If there is not even one face image with a face frame area equal to or greater than a certain size, the in-vehicle device control unit 13 determines that there is no passerby viewing the displayed content. On the other hand, if there are one or more face images with a face frame area of a certain size or more, the in-vehicle device control unit 13 determines whether the face indicated by the face image is detected by the camera 4 for each face image with a face frame area of a certain size or more. Determine if it fits or not. In this example, when the face faces the camera 4 , it can be considered that the face faces the image display area (=display content) of the target vehicle display 3 . In the example of FIG. 4, the face image G41 faces the camera 4, while the face image G42 does not face the camera 4. In FIG. Whether or not the face indicated by the face image is facing the camera 4 is determined by performing image processing analysis on the face image, as well as skeleton detection and posture detection by image processing on the body image including the face image. It can be performed using the detection result.

If there is no face image showing a face facing the camera 4, the in-vehicle device control unit 13 determines that there is no passerby viewing the display content. On the other hand, if one or more face images showing faces facing the camera 4 exist, the in-vehicle device control unit 13 displays each passerby corresponding to each of the face images showing faces facing the camera 4. It is determined that the content is visually recognized, and it is determined that there is a passerby who visually recognizes the content. Hereinafter, the passerby corresponding to the face image showing the face facing the camera 4 is referred to as the "visually recognized passerby".

As described above, in the present embodiment, the in-vehicle device control unit 13 selects a passerby whose face is facing the image display area of the target vehicle display 3 as a result of analysis by image processing of the captured image data, is judged to be a passerby who visually recognizes Note that the process of determining a passerby viewing the content is not limited to the illustrated process. For example, the in-vehicle device control unit 13 determines by image processing whether or not the line of sight of the eyes of a face indicated by a certain face image is directed toward the image display area of the target vehicle display 3, and if it is directed, the traffic corresponding to the face image is detected. A configuration may be adopted in which it is determined that a person is visually recognizing the content.

Further, in which direction the face indicated by the face image in the photographed image data is directed, it is determined that the image display area of the target vehicle display 3 is oriented, depending on the position where the camera 4 is provided, the position of the camera 4 This is a matter that should be appropriately set in consideration of orientation and other circumstances.

If it is determined that there is no passerby viewing the displayed content, the in-vehicle device control unit 13 terminates the passerby-related processing. On the other hand, if it is determined that there is a passerby visually recognizing the displayed content, the in-vehicle device control unit 13 analyzes the photographed image data, and determines the age group, gender, position of the passerby, and the passerby for each of the passersby for whom visual recognition is determined. The direction of travel is determined, and the passer-by related processing is terminated.

Regarding age groups, in the present embodiment, for example, a first age group of elementary school students or younger, a second age group of middle and high school students, a third age group of about 40 years old or less over the second age group, and a third age group of 60 Age groups are divided in advance, such as a fourth age group below the age of 60 and a fifth age group over 60 years old. The in-vehicle device control unit 13 analyzes the image of the visually determined passerby by image processing, and determines the visually determined passerby based on the appearance, clothing, body size, balance of each part of the body, etc. Determine age group. In addition, the in-vehicle device control unit 13 analyzes the image of the visually determined passerby by image processing, and determines the visually determined passerby based on the appearance, clothes, body size, balance of each part of the body, etc. determine the gender of

The passerby position means the position of the passerby on the map and is represented by latitude and longitude. The position of the passerby does not need to be exact, and may be an approximate position where the visually determined passerby is assumed to be located. The in-vehicle device control unit 13 analyzes the captured image data, derives the relative position of the visually recognized passerby with respect to the camera 4, and the relative position of the visually recognized passerby with respect to the camera 4, and the own vehicle position related information. The position of the passerby is determined based on the vehicle map position indicated by (the position of the vehicle on the map). Any method may be used to determine the position of a passerby. For example, a special sensor for distance measurement (stereo camera or LiDAR as an example) may be used to determine the position with higher accuracy. A simpler method, such as adding a certain margin to the position, may be used for determination.

The passerby traveling direction means the direction in which the passerby travels (absolute direction). Pedestrian orientation need not be exact. The in-vehicle device control unit 13 analyzes the captured image data, performs motion estimation and posture estimation based on skeleton detection for the image of the visually determined passerby, detects the general direction in which the visually determined passerby is moving, The direction of travel of a passerby is determined using the derived direction of travel of the vehicle.

After executing the passerby-related process, the in-vehicle device control unit 13 generates vehicle status notification data. FIG. 5 is a diagram showing the contents of vehicle status notification data. Each information shown in FIG. 5 is included in the vehicle status notification data. The vehicle ID is identification information for identifying the target vehicle 2 , and a unique value is assigned to each target vehicle 2 . The date and time information is information indicating the current date and time (date + time). That is, the date and time information is information indicating the date and time of the attention timing. The displayed content ID information is the content ID of the content displayed on the target vehicle display 3 at the attention timing. The vehicle speed information is information indicating the vehicle speed of the target vehicle 2 at the attention timing. The vehicle map position information is information indicating the vehicle map position of the target vehicle 2 at the attention timing. The travel link information is the link ID of the link on which the target vehicle 2 travels at the attention timing. The vehicle traveling direction information is information indicating the vehicle traveling direction of the target vehicle 2 at the attention timing.

The passerby-related information includes a visibility presence/absence flag and visibility determination passerby information. The visibility presence/absence flag is a flag indicating the presence/absence of a passerby who is judged to be visually recognized at the attention timing (that is, the presence or absence of a passerby who visually recognizes the displayed content), and has a value indicating the presence of a passerby who is judged to be visually recognized (hereinafter referred to as "valued"). ) or a value indicating that there is no visually determined passerby (hereinafter referred to as “no value”). When the in-vehicle device control unit 13 determines in the passerby-related processing that there is a visually recognized passerby, it sets the visibility flag to have a value.

The visual recognition determination passerby information is set to a null value when the visual recognition presence/absence flag has no value. When the visual recognition presence/absence flag has a value, the visual recognition determination passerby information has individual information for each visual recognition determination passerby. The individual information corresponding to a certain visually recognized passerby includes age group information indicating the age group of the visually recognized passerby, gender information indicating the sex of the visually recognized passerby, and the passerby position of the visually recognized passerby. and passerby traveling azimuth information indicating the traveling azimuth of the passerby of the visually determined passerby.

After generating the vehicle status notification data, the in-vehicle device control unit 13 transmits the vehicle status notification data to the management server 1 . Information necessary for transmitting vehicle status notification data to the management server 1 (access destination of the management server 1, etc.) is registered in advance. The transmission of the vehicle status notification data is actually performed as an HTTP request in which the content of the vehicle status notification data is described in the body according to the JSON format, for example (however, the method is not limited to this method).

The above is the process executed by the in-vehicle device control unit 13 at the attention timing. As a result of the above processing, vehicle status notification data is transmitted from the in-vehicle device 7 to the management server 1 at predetermined intervals for each of the target vehicles 2 that are running the content display. It goes without saying that the processing (especially image processing) of the in-vehicle device 7 described above may be performed using a model learned by a predetermined machine learning method (for example, deep learning).

When vehicle status notification data is transmitted from the in-vehicle device 7, the management unit 11 of the management server 1 receives the vehicle status notification data. Here, the server storage unit 20 stores a vehicle management database 30 for each target vehicle 2 (=for each type of vehicle ID). The management unit 11 recognizes the vehicle ID value of the received vehicle status notification data, and specifies the vehicle management database 30 corresponding to the recognized vehicle ID value among the vehicle management databases 30 . Next, the management unit 11 registers the received vehicle status notification data in the identified vehicle management database 30 . As a result, the vehicle status notification data received from the target vehicle 2 is cumulatively registered in the vehicle management database 30 for the target vehicle 2 . However, an upper limit is set for the number of vehicle status notification data that can be registered in one vehicle management database 30, and when the management unit 11 registers new vehicle status notification data, it is configured to delete the old vehicle status notification data in order. It's okay.

Next, processing of the management server 1 will be described in detail. The management unit 11 of the management server 1 monitors the vehicle management database 30 for each target vehicle 2 and determines whether or not any of the following first target state and second target state has appeared in the physical space. Hereinafter, the first target state and the second target state are collectively referred to as "target states". When determining that any target state has appeared, the management unit 11 executes processing according to the target state that has appeared. In the following, the state of each target state will be described, and the processing executed by the management unit 11 when the target state appears will be described.

<First target state>
In the first target state, one or more target vehicles 2 are running in a predetermined range behind the target vehicle 2 when a passerby visually recognizes the content displayed on the target vehicle display 3 of the target vehicle 2. Moreover, no one is visually recognizing the display content of the target vehicle 2 located in the predetermined rear range. The predetermined range behind the target vehicle 2 means a range of a predetermined distance from the target vehicle 2 as a starting point toward the direction opposite to the traveling direction of the target vehicle 2 on the road on which the target vehicle 2 is traveling.

FIG. 6A shows an example of the first target state. FIG. 6A schematically shows a simplified top view of a physical space in which vehicles including the target vehicle 2 and passersby exist. Reference numerals J1 to J4 in FIG. 6A indicate passers-by. In other figures as well, a code consisting of a combination of the alphabet "J" and a number indicates a passerby. In FIG. 6(A), reference numerals K1 to K4 indicate target vehicles 2, respectively. Also in other drawings, reference numerals consisting of a combination of the alphabet "K" and numerals indicate the target vehicle 2. As shown in FIG. In FIG. 6A, reference numerals N1 and N2 denote vehicles other than the target vehicle 2 (hereinafter referred to as "normal vehicles"). Also in other figures, a symbol consisting of a combination of the alphabet "N" and a number indicates a normal vehicle. Rectangular blocks indicating normal vehicles in the figure are marked with crosses. In FIG. 6A, as clearly shown in the drawing, the upward direction in the drawing is the traveling direction of each vehicle, and this traveling direction is north. As for other drawings, the traveling direction and orientation are clearly indicated in the drawings when necessary.

In the following description, each content is expressed as content C1, content C2, content C3, . to distinguish different content from each other. In FIG. 6A, the rectangular block representing the target vehicle 2 indicates the symbol of the content currently displayed on the target vehicle display 3 of the target vehicle 2 . For example, in FIG. 6A, the symbol "C1" is displayed on the target vehicle K1, which indicates that the content C1 is displayed on the target vehicle display 3 of the target vehicle K1. The same applies to other figures.

Also, in FIG. 6A, a certain passerby is visually recognizing the content of a certain target vehicle 2 (if it is visually recognized, it is determined by the in-vehicle device control unit 13 of the in-vehicle device 7 mounted in the target vehicle 2). ) is represented by a dashed arrow pointing from the passerby to the target vehicle 2 . The same applies to other drawings. For example, in FIG. 6A, a dashed arrow pointing from the passerby J1 to the target vehicle K1 is drawn. is determined). On the other hand, in FIG. 6A, the passers-by J2-J4 do not have dashed arrows, which indicates that the passers-by J2-J4 do not visually recognize the display content of any of the target vehicles 2. .

FIG. 6A shows a state in which a passerby J1 is visually recognizing the content C1 displayed on the target vehicle K1. Three target vehicles, namely target vehicle K2, target vehicle K3 and target vehicle K4, are traveling in order within a predetermined range behind target vehicle K1. None of the contents displayed on these target vehicles K2 to K4 is visually recognized. Therefore, the target state shown in FIG. 6A is the first target state. Note that the content C2 is displayed on the target vehicle K2, the content C3 is displayed on the target vehicle K3, and the content C4 is displayed on the target vehicle K4.

The management unit 11 determines that the first target state has appeared in the physical space as follows. That is, the following first condition is satisfied based on the vehicle map position information, the travel link information, the vehicle traveling direction information, and the visibility flag of the vehicle status notification data most recently registered in the vehicle management database 30 of each target vehicle 2. monitor whether or not (1) The visibility flag for one target vehicle 2 has a value; (2) One or more other target vehicles 2 exist within a predetermined range behind the one target vehicle 2; The visibility presence/absence flags of one or more other target vehicles 2 existing within a predetermined range behind the one target vehicle 2 are null.

Regarding (2), whether or not another target vehicle 2 exists within a predetermined range behind one target vehicle 2 depends on (a) the road on which the one target vehicle 2 and the other target vehicle 2 travel. (b) whether or not the vehicle traveling directions of the one target vehicle 2 and the other target vehicle 2 are the same (both vehicle traveling directions are within a certain range); and (c) the vehicle map position of the other target vehicle 2 is compared with the vehicle map position of the one target vehicle 2, and the one target vehicle 2, and is within a certain distance from the vehicle map position of the target vehicle 2 as a reference point.

In FIG. 6(A), blocks representing the target vehicles K1 to K4 are arranged side by side, with respect to each of the target vehicles K1 to K4. showing the value. It is assumed that the vehicle map positions of the target vehicles K2 to K4 are located within a certain distance (distance corresponding to a predetermined rear range) from the vehicle map position of the target vehicle K1.

In the example of FIG. 6A, (1) the visibility flag for the target vehicle K1 has a value, and (2) one or more other target vehicles K2 to K4 exist within a predetermined range behind the target vehicle K1. (3) The visibility flags of one or more other target vehicles K2 to K4 existing within a predetermined range behind the target vehicle K1 are null, and the first condition is satisfied. Therefore, when the state shown in FIG. 6A occurs in the physical space, the management unit 11 detects that the first condition is satisfied, and determines that the first target state has appeared.

In the following description of the first target state, the target vehicle 2 with a valued visibility flag is referred to as a "starting vehicle", and the target vehicle 2 within a predetermined range behind the starting vehicle is referred to as a "rearing vehicle". When determining that the first target state has appeared, the management unit 11 executes the following process. That is, the management unit 11 instructs each of the following vehicles to display the same content as the content displayed on the starting vehicle. As a specific process, first, the management unit 11 recognizes the content ID of the display content of the starting vehicle based on the vehicle status notification data related to the starting vehicle. Next, the management unit 11 includes the content ID of the content displayed on the starting vehicle to the in-vehicle device control unit 13 of each in-vehicle device 7 of the rear vehicle, and switches the displayed content to the content of the content ID. It transmits control data (HTTP response as an example) instructing that.

The in-vehicle device control unit 13 of each in-vehicle device 7 of the rear vehicle switches the display content using the in-vehicle device content database 28 according to the instruction from the management unit 11 . After switching the display content, the in-vehicle device control unit 13 of each in-vehicle device 7 of the rear vehicle returns the display content to the display content before switching when a predetermined time or longer has elapsed. The fixed time is a time sufficient for the rear vehicle to pass the place where the origin vehicle was located when a passerby visually recognized the display content of the origin vehicle. However, the processing executed by the in-vehicle device control unit 13 related to the rear vehicle after switching the display content is not limited to this.

For example, in the example of FIG. 6A, the management unit 11 instructs the in-vehicle device control units 13 of the target vehicles K2 to K4 to switch the display content to the content C1. In response to this instruction, the in-vehicle device control units 13 of the target vehicles K2 to K4 switch the display content to the content C1. As a result, the content C1 is displayed on the target vehicles K2 to K4 as shown in FIG. 6B.

The following effects are obtained by performing the above-described processing for the first target state. That is, the target vehicle 2 does not stay in the same position all the time, but moves on the road. Therefore, when a certain passerby visually recognizes the content displayed on a certain target vehicle 2 and becomes interested in it, the target vehicle 2 moves without the passerby fully grasping the details of the content. may become invisible. In this case, passers-by remain unable to grasp the details of the content. On the other hand, according to the present embodiment, when a certain passerby visually recognizes the content displayed on a certain target vehicle 2, if it is in the first target state, the other target vehicles 2 following the target vehicle 2 are also in the same state. The content will be displayed, and the passerby can continue to view the same content and confirm the content. Therefore, it is possible to reduce the possibility that a passerby will remain unable to grasp the details of the content.

<First Modification Regarding First Target State>
Next, the 1st modification regarding a 1st object state is demonstrated. In the above-described embodiment, when the management unit 11 detects that the first target state has occurred, the management unit 11 switches the display content of the rear vehicle existing within a predetermined range behind the origin vehicle. On the other hand, when the management unit 11 according to the first modified example detects that the first target state has occurred, the management unit 11 switches the display content of the predetermined number of target vehicles 2 behind the starting vehicle. For example, when the predetermined number is determined to be two in the example of FIG. 6A, the management unit 11 switches the display contents of the target vehicles K2 and K3. Further, for example, the management unit 11 switches the display contents of the target vehicles K2 to K4 when the predetermined number is determined to be three in the example of FIG. 6(A). The above configuration also produces the same effects as those described in the above embodiment.

<Second Modification Regarding First Target State>
Next, a second modification regarding the first target state will be described. In the above-described embodiment, when the management unit 11 detects that the first object state has occurred, the management unit 11 immediately switches the display content of the rear vehicle located within the predetermined rear range. On the other hand, the management unit 11 according to the second modification switches the display content of the rear vehicle when the passerby visually recognizes the display content of the starting vehicle for a predetermined time or longer. Referring to FIG. 6A, the specific processing will be described. When the management unit 11 detects that the state of FIG. Instead, it monitors the vehicle status notification data input from the target vehicle K1, which is the starting vehicle, at predetermined intervals. Then, if the visibility flag continues to have a value for a predetermined time (for example, 3 seconds) or more (that is, if the visibility determination passerby continuously views the display content for a predetermined time or more) ) only to switch the display content of the rear vehicle.

Here, even if the passerby visually recognizes the content, it is assumed that if the passerby does not have an interest in the content, the passerby immediately stops watching the content. On the other hand, when passers-by show interest in content, it is assumed that they will continue to view the content rather than immediately stop viewing the content. Based on this, according to the second modification, the content displayed on the origin vehicle is not merely visually recognized by the passerby, but only when it is assumed that the passerby is interested in the content displayed on the back vehicle. is switched. Therefore, it is possible to prevent the content of the rear vehicle from being switched even though the passerby is not interested in the content displayed on the starting vehicle.

<Third Modification Regarding First Target State>
Next, a third modification regarding the first target state will be described. In the above-described embodiment, when the management unit 11 detects that the first object state has occurred, the management unit 11 switches the display content of the rear vehicle existing within a predetermined rear range of a certain size. On the other hand, the management unit 11 according to the third modification combines the time from when the passerby starts to visually recognizes the display content of the starting vehicle until it ends (hereinafter referred to as "visualization time") and the vehicle speed of the starting vehicle. The size of the rear predetermined range is changed according to. On the other hand, the management unit 11 does not switch the display content of the rear vehicle when the vehicle speed is above a certain level. More specifically, the management unit 11 determines, according to the visual recognition time of the content displayed on the target vehicle display 3 of the starting vehicle by the passerby and the vehicle speed of the starting vehicle, that the shorter the visual recognition time, the larger the predetermined backward range. In addition, the faster the vehicle speed, the larger the rear predetermined range. Hereinafter, processing of the management unit 11 according to this modification will be described in detail.

The management unit 11 according to this modification does not switch the display content of the rear vehicle immediately when the first target state occurs, but refers to the vehicle speed information of the vehicle status notification data related to the starting vehicle, and the vehicle speed information is Recognize the indicated vehicle speed. The vehicle speed recognized here is the vehicle speed of the originating vehicle when the passerby starts viewing the display content of the originating vehicle, and can be regarded as the vehicle speed of the originating vehicle when the passerby visually recognizes the display content. Next, the management unit 11 determines whether the recognized vehicle speed is low speed, medium speed, or high speed (low speed<medium speed<high speed) based on two predetermined threshold values. That is, in this modified example, three categories of vehicle speed, low speed, medium speed, and high speed, are defined, and the management unit 11 determines to which category the vehicle speed of the starting vehicle belongs.

Furthermore, the management unit 11 determines whether the visual recognition time for which the passerby visually recognized the display content of the starting vehicle was a "long time" or a "short time." Specifically, the management unit 11 continuously monitors the visibility flag of the vehicle status notification data related to the starting vehicle, and after the visibility flag becomes valid, it becomes invalid before a predetermined threshold elapses. If it is a value, it is determined to be "short time", and if it has a value when the threshold is passed, it is determined to be "long time". That is, in this modification, two classifications of long time and short time are defined for the viewing time, and the management unit 11 determines to which classification the viewing time belongs.

FIG. 7 is a diagram simply showing the processing executed by the management unit 11 for each combination of vehicle speed classification and recognition time classification. As shown in FIG. 7, the management unit 11 minimizes the size of the predetermined rear range when the visual recognition time is classified as long and the vehicle speed is classified as low (expressed as "small" in FIG. 7). That is, when the visual recognition time is classified as long and the vehicle speed is classified as low, the size of the predetermined backward range is the smallest compared to other combinations. When the management unit 11 is configured to switch the display contents of the predetermined number of vehicles behind by applying the first modified example, the management unit 11 minimizes the value of the predetermined number.

This provides the following effects. That is, when the viewing time is classified as long and the vehicle speed is classified as low, it is assumed that the passerby was able to thoroughly confirm the displayed content of the starting vehicle for a sufficient time. In this case, it is considered that passers-by fully understand or almost understand the contents of the display content of the originating vehicle, so the number of vehicles behind that are displayed with the same content as the originating vehicle may be limited, and the same content may be displayed. By limiting the rear vehicles to be switched, it is possible to prevent the display content from being switched even for the target vehicle 2 that does not need to switch the display content. In view of the above, when the visual recognition time is classified as long and the vehicle speed is classified as low, the management unit 11 may be configured not to switch the display content of the rear vehicle.

As shown in FIG. 7, when the visual recognition time is classified as long and the vehicle speed is classified as medium speed, the management unit 11 sets the size of the predetermined rear range to "visible time: long, vehicle speed: low". It is set to be larger than when "visual recognition time: short time, vehicle speed: medium speed" (expressed as "medium" in FIG. 7). If the first modification is applied and the management unit 11 is configured to switch the display content of a predetermined number of vehicles behind, the management unit 11 sets the value of the predetermined number to "visual recognition time: long time, vehicle speed: low speed. ” and smaller than that in the case of “visual recognition time: short time, vehicle speed: medium speed”.

This provides the following effects. In other words, when the visual recognition time is classified as long and the vehicle speed is classified as medium speed, passersby cannot check the display content of the starting vehicle more carefully than when the visual recognition time is long and the vehicle speed is low. However, it can be confirmed to some extent, and it is considered that the contents of the content are understood to some extent. On the other hand, it is assumed that passers-by can more accurately grasp the contents of the display content of the starting vehicle compared to the case of "visibility time: short time, vehicle speed: medium speed". From the above, it is possible to make the predetermined rear range larger than when "visual recognition time: long time, vehicle speed: low speed" and to make the rear predetermined range smaller than when "visual recognition time: short time, vehicle speed: medium speed". Thus, it is possible to provide passers-by with an opportunity to more reliably grasp the contents of the display contents of the starting vehicle, and prevent the display contents of an unnecessarily large number of target vehicles 2 from being switched.

As shown in FIG. 7, when the visual recognition time is classified as short time and the vehicle speed is classified as low speed, the management unit 11 sets the size of the predetermined backward range to "visible time: long time, vehicle speed: low speed". and smaller than when "visible time: short time, vehicle speed: medium speed" (expressed as "medium" in FIG. 7). If the first modification is applied and the management unit 11 is configured to switch the display content of a predetermined number of vehicles behind, the management unit 11 sets the value of the predetermined number to "visual recognition time: long time, vehicle speed: low speed. ” and smaller than that in the case of “visual recognition time: short time, vehicle speed: medium speed”.

This provides the following effects. In other words, when the visual recognition time is classified as short and the vehicle speed is classified as low, passersby could not check the displayed content of the starting vehicle more carefully than when "visualization time: long, vehicle speed: low". However, it can be confirmed to some extent, and it is considered that the contents of the content are grasped to some extent. On the other hand, it is assumed that passers-by can more accurately grasp the contents of the display content of the starting vehicle compared to the case of "visibility time: short time, vehicle speed: medium speed". From the above, it is possible to make the predetermined rear range larger than when "visual recognition time: long time, vehicle speed: low speed" and to make the rear predetermined range smaller than when "visual recognition time: short time, vehicle speed: medium speed". Thus, it is possible to provide passers-by with an opportunity to more reliably grasp the contents of the display contents of the starting vehicle, and prevent the display contents of an unnecessarily large number of target vehicles 2 from being switched.

Further, as shown in FIG. 7, the management unit 11 increases the size of the predetermined backward range when the visual recognition time is classified as short time and the vehicle speed is classified as medium speed, compared to other combinations. That is, when the visual recognition time is classified as short time and the vehicle speed is classified as medium speed, the size of the predetermined backward range is the largest compared to other combinations. When the first modification is applied and the management unit 11 is configured to switch the display contents of the predetermined number of vehicles behind, the management unit 11 increases the value of the predetermined number of vehicles compared to other combinations. do.

This provides the following effects. In other words, when the visual recognition time is classified as short and the vehicle speed is classified as medium speed, the passerby can confirm the display content of the starting vehicle to some extent, but cannot fully confirm it, and cannot grasp the contents of the content. considered insufficient. Based on the above, in the case of "visibility time: short time, vehicle speed: medium speed", by maximizing the rear specified range, it is possible to give passers-by an opportunity to more reliably understand the content displayed on the starting vehicle. can be prevented.

Further, as shown in FIG. 7, when the vehicle speed classification is high (=the vehicle speed is above a certain level), the management unit 11 does not switch the display content of the rear vehicle regardless of the visual recognition time classification. This is because when the vehicle speed of the starting vehicle is high, even if a passerby visually recognizes the displayed content of the starting vehicle, it is unlikely that they will be able to grasp the content to the extent that they are interested. This is because unnecessary switching of the display content can be prevented by not having the display content.

When the vehicle speed is classified as high speed, the management unit 11 does not switch the display content of the rear vehicle, but executes the following processing. That is, the management unit 11 refers to the passerby position information and the passerby traveling direction information of the vehicle status notification data related to the starting vehicle, and recognizes the passerby position and traveling direction of the passerby who visually recognizes the display content of the starting vehicle. do. Next, the management section 11 refers to the digital signage management database 32 stored in the server storage section 20 .

The digital signage management database 32 is a database used for managing the digital signage 8 and has a record for each digital signage 8 . One record includes at least a digital signage ID for identifying the digital signage and digital signage position information indicating the position of the digital signage on the map (hereinafter referred to as "digital signage map position").

Based on the digital signage position information of each record in the digital signage management database 32 referred to, the management unit 11 is an area within a predetermined range centered on the passerby map position of the passerby who visually recognized the display content of the starting vehicle. Then, it is determined whether or not there is a digital signage 8 in the direction toward the travel direction of the passerby from the passerby map position as a starting point (the travel direction of the passerby).

When the digital signage 8 exists in such an area, the management unit 11 includes the content ID of the display content of the starting vehicle in the digital signage 8, and the content displayed on the digital signage display 9 is displayed with the content ID. Send control data to instruct switching to content.

Upon receiving the control data, the digital signage control unit 15 of the digital signage 8 refers to the digital signage content database 33 and switches the content displayed on the digital signage display 9 . As a result, the digital signage 8 displays the same content as the display content of the starting vehicle.

This provides the following effects. That is, when the vehicle speed is classified as high speed, the display content of the vehicle behind is not switched, so the passerby does not check the display content displayed on the starting vehicle by the display content of the vehicle behind (however, , it is possible that the display content of the rear vehicle and the display content of the starting vehicle are the same by chance). On the other hand, according to the above configuration, the same content as the display content of the starting vehicle is displayed on the digital signage display 9 of the digital signage 8 that a passerby may visually recognize in the course of traveling. Therefore, it is possible to secure the possibility of providing the passers-by with the content displayed on the starting vehicle again.

Note that, regarding the third modification, the management unit 11 does not need to perform processing strictly according to the table in FIG. For example, classification related to viewing time or classification related to vehicle speed may be more detailed. That is, the management unit 11 determines whether the predetermined backward range is larger as the visual recognition time is shorter, depending on the visual recognition time of the one content displayed on the display of the one vehicle by the passerby and the vehicle speed of the one vehicle. Alternatively, the value of the predetermined number indicating the number of vehicles whose content is to be switched is increased, and the faster the vehicle speed is, the larger the predetermined rear range is or the greater the value of the predetermined number is.

<Fourth Modification Regarding First Target State>
In the above embodiment, the first target state is a state in which one passerby is visually recognizing the display content of the starting vehicle. In this respect, the first target state may be a state in which a predetermined number of passersby (however, the predetermined number≧two) or more passersby are visually recognizing the display content of the starting vehicle instead of one person. According to this configuration, only when two or more passers-by are visually recognizing the display content of the starting vehicle and the display content of the rear vehicle can be effectively appealed to more people by switching the display content of the vehicle behind Since the display content of the vehicle is switched, unnecessary switching of the display content can be suppressed.

<Fifth Modification Regarding First Target State>
In the above-described embodiment, the management unit 11 switches the display content of the target vehicle 2 existing within the predetermined rear range of a certain size when detecting the first target state. Regarding this point, the management unit 11 considers the vehicle speed of the target vehicle 2 located behind the origin vehicle and the vehicle map position, and determines the position of the origin vehicle when a passerby starts to visually recognize the displayed content within a predetermined time. The display content may be switched only for the target vehicle 2 that can reach the position. According to this configuration, it is possible to reach a position where a passerby can visually recognize the target vehicle 2 within a predetermined time. Display content can be switched.

<Sixth Modification Regarding First Target State>
In the above embodiment, the management unit 11 switches the display content of the rear vehicle to the same content as the display content of the starting vehicle. Regarding this point, the management unit 11 does not switch the display content of the rear vehicle to the same content as the display content of the starting vehicle (this is also one of the contents having the same content as the display content of the starting vehicle). , a configuration for switching to content that is identical to the display content of the starting vehicle (except for content that is exactly the same as the display content for the starting vehicle), or a configuration for switching to content that is continuous with the display content of the starting vehicle. It's okay.

Content that is identical to the display content of the starting vehicle means content that is substantially the same as the display content of the starting vehicle, although there are differences in form, such as multiple versions advertising the same product. is each content when the content of is created. Also, content having continuity with the display content of the starting vehicle means content that has a meaningful connection with the display content of the starting vehicle. If you are in each content.
<Seventh Modification Regarding First Target State>
In the above embodiment, the condition that another target vehicle 2 exists within a predetermined range behind one target vehicle 2 is "(a) the road on which the one target vehicle 2 and the other target vehicle 2 travel. The link ID must be common" was included. Regarding this point, the link on which the other target vehicle travels and the link on which the one target vehicle 2 travels are not exactly the same. The condition may be that the link is the same as the link on which the one target vehicle 2 travels, or that it is continuous with a node interposed therebetween.

<Other matters related to the first target state>
As described above, a plurality of modifications regarding the first target state have been described, but it goes without saying that two or more modifications may be combined and applied to the embodiment.

<Second target state>
Next, the second target state will be explained. The second target state is different when a plurality of target vehicles 2 exist within a certain range on a certain road (a normal vehicle may exist between the target vehicles 2). A plurality of different passers-by are visually recognizing the display contents of a plurality of target vehicles 2 . Among the plurality of target vehicles 2 existing within a certain range, there may be target vehicles 2 whose display content is not visually recognized.

In the following, for simplicity of explanation of the second target state, a plurality of target vehicles 2 exist within a certain range, and different passers-by are visually recognizing the display contents of two target vehicles 2 among them. and Of the two target vehicles 2 visually recognized by a passerby, the target vehicle located on the traveling direction side is called the "first target vehicle", and the target vehicle located on the opposite side to the traveling direction is called the "second target vehicle". . The display content of the first target vehicle is called "first content", and the passerby who visually recognizes the first content is called "first passerby". The display content of the second target vehicle is called "second content", and the passerby who visually recognizes the second content is called "second passerby".

FIG. 8 shows an example of the second target state. In FIG. 8, six target vehicles K1 to K6 are running side by side on the road. Each of the target vehicles K1 to K6 exists within a certain range. The passerby J1 visually recognizes the content C1 displayed on the target vehicle K1 (corresponding to the first target vehicle), and the passerby J2 visually recognizes the content C2 displayed on the target vehicle K2 (corresponding to the second target vehicle). is in a state of No one has visually recognized the display contents of the target vehicles K3 to K6. As described above, the target state shown in FIG. 8 is the second target state.

The management unit 11 detects the appearance of the second target state in the physical space based on the vehicle status notification data of the vehicle management database 30 of each target vehicle 2, as with the first target state. Briefly, based on the vehicle status notification data, the management unit 11 determines that the plurality of target vehicles 2 are traveling in the same direction within a certain range on the same road (link with a common link ID), and , when it is detected that different passers-by are visually recognizing the display contents of a plurality of target vehicles 2, it is determined that the second target state has appeared.

When determining that the second target state has appeared, the management unit 11 executes the following process. That is, the management unit 11 derives the degree of matching between the first content and the first passerby for the first passerby who views the first content, and calculates the second content for the second passerby who views the second content. and the degree of matching with the second passerby. The degree of matching between a certain content and a certain passerby is the degree of matching between the target of the content and the passerby considering the age group and gender of the passerby (how high the affinity is). ) is a value indicating the degree of

The management unit 11 derives the degree of matching between a certain content and a certain passerby by the following method. That is, in this embodiment, for each content, a table is prepared in which the degree of matching is defined in advance for each combination of the passerby's age group and gender. Based on this, the management unit 11 acquires the display content ID information of the vehicle status notification data, the age group information (information indicating the age group of the passerby), and the gender information (information indicating the gender of the passerby), The matching degree is derived by referring to the table described above.

Next, the management unit 11 switches the display content of the target vehicle existing within a certain range to content with the highest matching degree. More specifically, when the degree of matching between the first content and the first passerby is higher than the degree of matching between the second content and the second passerby, the management unit 11 determines that the object existing within a certain range The display content of the vehicle 2 is switched to the first content. On the other hand, when the degree of matching between the second content and the second passerby is higher than the degree of matching between the first content and the first passerby, the management unit 11 determines whether the target vehicle 2 existing within a certain range The displayed content is switched to the second content.

For example, in FIG. 8, it is assumed that the degree of matching between the content C1 related to the target vehicle K1 and the passerby J1 is higher than the matching degree between the content C2 related to the target vehicle K2 and the passerby J2. In this case, the management unit 11 switches the display content of the target vehicles K2 to K6 to the content C1, as shown in FIG. 9A. For example, in FIG. 8, it is assumed that the degree of matching between the content C2 related to the target vehicle K2 and the passerby J2 is higher than the matching degree between the content C1 related to the target vehicle K1 and the passerby J1. In this case, the management unit 11 switches the display contents of the target vehicles K1, K3 to K6 to the contents C2 as shown in FIG. 9B.

Note that when the degree of matching for the first content and the degree of matching for the second content are equal, the management unit 11 divides the display content of the target vehicle 2 existing within a certain range from the first content and the second content. Switch to one of the randomly determined contents. However, the process executed by the management unit 11 when the degrees of matching are equal is not limited to this, and for example, switching may not be performed.

By performing the above processing for the second target state, the following effects are obtained. That is, according to the above configuration, when different passers-by visually recognize the display contents of a plurality of different target vehicles 2, the display contents of the target vehicles 2 within a certain range are switched to the one with the higher matching degree. . For this reason, the passerby with a lower matching degree cannot use the display content of the target vehicle 2 behind and continue to visually recognize the same content, but the passerby with a higher matching degree cannot see the same content displayed by the target vehicle 2 behind. It is possible to build a state in which the same content can be continuously viewed using the displayed content. This can effectively enhance the appealing effect of the content.

The processing of the management unit 11 in the second target state has been described above, taking as an example the case where different passers-by visually recognize the respective display contents of two different target vehicles 2 . However, the management unit 11 also executes the same processing when different passers-by visually recognize the display contents of three or more target vehicles 2 . That is, when the second target state is detected, the management unit 11 switches the display content of the target vehicle 2 existing within a certain range to content with the highest degree of matching.

<First Modification Regarding Second Target State>
Next, a first modification regarding the second target state will be described. In the above-described embodiment, when the management unit 11 detects that the vehicle is in the second target state, the display content of the target vehicle 2 existing within a certain range is switched to the content with the highest matching degree. On the other hand, the management unit 11 according to the first modification assumes that a passerby is visually recognizing one content displayed on one target vehicle 2 when the second target state appears, of each target vehicle 2 so that the same content as the one content is displayed on the other target vehicle 2 when the other target vehicle 2 behind is located at the place where the target vehicle 2 of Controls switching of displayed content.

For example, assume that the second target state appears in the mode shown in FIG. 10(A). In FIG. 10A, the passerby J1 visually recognizes the content C1 displayed on the target vehicle K1, and the passerby J2 visually recognizes the content C3 displayed on the target vehicle K3 behind the target vehicle K1. In this case, the management unit 11 displays the content C1 when the target vehicle 2 behind the target vehicle K1 is positioned at the location L1 where the target vehicle K1 is positioned at the time of FIG. 10(A). do. Furthermore, the management unit 11 causes the content C3 to be displayed when the target vehicle 2 behind the target vehicle K3 is positioned at the location L2 where the target vehicle K3 is positioned at the time of FIG. 10(A).

As a result of such processing, as shown in FIG. 10B, each target vehicle 2 progresses from the state of FIG. When the target vehicle K4 is positioned, the content C1 is displayed on the target vehicle K2, and the content C3 is displayed on the target vehicle K4. Note that the management unit 11 detects that the target vehicle K2 is positioned at the location L1 as follows. That is, the management unit 11 recognizes the position indicated by the vehicle map position information of the vehicle status notification data related to the target vehicle K1 when the visibility flag becomes valid, and places a certain area around this position as the location L1. remember as The management unit 11 keeps track of the vehicle map position of the target vehicle K2 based on the vehicle status notification data relating to the target vehicle K2, and when the vehicle map position of the target vehicle K2 reaches the location L1, it notifies the location. To detect. The management unit 11 similarly detects that any target vehicle 2 has reached the location L1 or the location L2. When the management unit 11 detects that the target vehicle K2 has reached the location L1, the management unit 11 transmits control data to the in-vehicle device 7 of the target vehicle K2 to switch the display content. Further, as shown in FIG. 10(C), when each target vehicle 2 advances from the state of FIG. The content C1 is displayed on the vehicle K3, and the content C3 is displayed on the target vehicle K5.

According to this configuration, each passer-by can continue to view the same content and confirm the content when the second target state occurs. Therefore, it is possible to more effectively reduce the possibility that a passerby will remain unable to grasp the details of the content.

The first modified example regarding the second target state has been described above. It goes without saying that it may be applied.

Next, a management method by the management server 1 will be described using a flowchart. FIG. 11 is a flowchart showing main processing of the management server 1 according to this embodiment. As shown in FIG. 11, the management unit 11 of the management server 1, when one target vehicle 2 is running and another target vehicle 2 is running behind the one target vehicle 2, It is determined that there is a passerby who visually recognizes one content displayed on the target vehicle display 3 of the target vehicle 2 (step SA1). When such a passerby exists, the management unit 11 of the management server 1 displays content identical or continuous with the one content on the target vehicle display 3 of the other target vehicle 2. (step SA2).

Although the embodiments of the present invention have been described above, the above-described embodiments merely show examples of specific implementations of the present invention, and the technical scope of the present invention is not construed in a limited manner. It should not be. Thus, the invention may be embodied in various forms without departing from its spirit or essential characteristics.

For example, the configuration may be such that the management unit 11 executes the processing that the in-vehicle device control unit 13 executes based on the captured image data of the camera 4 . More specifically, in the above-described embodiment, the management unit 11 acquires the analysis result of the captured image data of the camera 4 that is mounted on the target vehicle 2 and captures the outside of the vehicle, thereby displaying the target vehicle display 3 of the target vehicle 2. It is determined whether or not there is a passerby who visually recognizes the content displayed on the screen. Regarding this point, the in-vehicle device control section 13 transmits the photographed image data to the management section 11 instead of the information obtained by analyzing the photographed image data of the camera 4 . The management unit 11 analyzes the captured image data, acquires various information, and determines whether or not there is a passerby who visually recognizes the content displayed on the target vehicle display 3 of the target vehicle 2. good.

1 management server (management device)
2 Target vehicle (vehicle)
3 Target vehicle display (display)
4 camera 5 management system 7 in-vehicle device 8 digital signage 11 management department

Claims (13)

A management device for managing a vehicle having a display capable of displaying content on its exterior,
When one vehicle is running and another vehicle is running behind the one vehicle, and there is a passerby who visually recognizes the one content displayed on the display of the one vehicle, the A management device, comprising: a management unit configured to display content identical or continuous with the one content on a display of another vehicle. The management unit visually recognizes the one content displayed on the display of the one vehicle for a predetermined time or longer while the one vehicle is running and another vehicle is running behind the one vehicle. 2. The management device according to claim 1, wherein, when there is a passerby who wants to use the content, the display of the other vehicle displays content that is identical to or has continuity with the one content. The management unit determines that when one vehicle is running and another vehicle is running behind the one vehicle, a passerby who visually recognizes the one content displayed on the display of the one vehicle If present, each of the other vehicles present within a predetermined range behind the one vehicle, or each of a predetermined number of other vehicles behind the one vehicle, displays the same content as the one content. 2. The management device according to claim 1, wherein the content is displayed in a continuous manner. The management unit increases the predetermined range as the visual recognition time becomes shorter, according to the visual recognition time during which the one content displayed on the display of the one vehicle is visually recognized by the passerby and the vehicle speed of the one vehicle. or the value of the predetermined number of vehicles is increased, and the faster the vehicle speed, the greater the predetermined range or the value of the predetermined number of vehicles is increased. management device. 5. The management device according to claim 4, wherein the management unit does not switch content of other vehicles behind the one vehicle when the vehicle speed is equal to or higher than a predetermined speed. When the content of the other vehicle behind the one vehicle is not switched because the vehicle speed is equal to or higher than a certain value, and if there is a digital signage in the traveling direction of the passerby, the management unit displays the digital signage on the one vehicle. 6. The management device according to claim 5, wherein the content displayed on the display of the vehicle is displayed. The management unit determines that when one vehicle is running and another vehicle is running behind the one vehicle, a passerby who visually recognizes the one content displayed on the display of the one vehicle 2. The management device according to claim 1, wherein, when there are more than a predetermined number of people, content having the same content or continuity with the one content is displayed on the display of the other vehicle. The management unit determines that when one vehicle is running and another vehicle is running behind the one vehicle, a passerby who visually recognizes the one content displayed on the display of the one vehicle If there is, other vehicles behind the one vehicle that can reach the position of the one vehicle within a predetermined time when the one content is viewed by a passerby are displayed on the display. 2. The management device according to claim 1, wherein content having identity or continuity with the one content is displayed. When a plurality of vehicles are present within a certain range on the road and a plurality of different passers-by are visually recognizing the content displayed on the displays of the plurality of different vehicles, the management unit , derives the degree of matching, which indicates the degree of matching between the target of the content and the passerby who sees the content, and displays the content with the highest degree of matching on the display of the vehicle existing within the certain range. 2. The management device according to claim 1, wherein the content is displayed in a continuous manner. When a plurality of vehicles exist within a certain range on the road and a plurality of different passers-by are visually recognizing the content displayed on the displays of the plurality of different vehicles, Assuming that a passerby was visually recognizing a piece of content displayed on the display of the display, another vehicle behind was positioned where the vehicle was located when the passerby visually recognized the piece of content. 2. The management device according to claim 1, wherein, when the content is displayed on the display of the other vehicle, the content that is identical with or has continuity with the one content is displayed. The management unit acquires an analysis result of captured image data of a camera mounted on the vehicle that captures the outside of the vehicle, or analyzes the captured image data to visually recognize the content displayed on the display of the vehicle. 11. The management device according to any one of claims 1 to 10, which determines whether or not a person exists. A management system comprising: an in-vehicle device mounted on a vehicle having a display capable of displaying content on its exterior; and a management device capable of communicating with the in-vehicle device via a network,
The management device enables a passerby who visually recognizes one content displayed on the display of the one vehicle when the one vehicle is running and another vehicle is running behind the one vehicle. and a management unit that instructs the in-vehicle device of the other vehicle to display content identical or continuous with the one content on the display of the other vehicle, if present. management system. A management method for a vehicle provided with a display capable of displaying content on its exterior,
Traffic in which the management unit of the management device visually recognizes one content displayed on the display of the one vehicle when the one vehicle is running and another vehicle is running behind the one vehicle determining that a person is present;
and the step of causing the management unit of the management device to display content identical or continuous with the one content on the display of the other vehicle when such a passerby exists. A management method characterized by

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