JP7666151B2 - Information Display System - Google Patents

Description

The present invention relates to an information display system. In particular, the present invention relates to an improvement in the display format of an image (e.g., an image intended to draw attention or present an advertisement, etc.) specified based on acquired information when the image is projected and displayed.

Conventionally, as disclosed in Patent Document 1, for example, there is known an information display system that projects and displays images based on acquired information in order to alert people in the vicinity (e.g., vehicle drivers, pedestrians, etc.).

Patent Document 1 discloses that a drone equipped with an imaging device, a projector, etc. is used to project (project and display) an image onto the road surface from the projector for the purpose of calling attention, etc. Specifically, while the drone is flying, the imaging device photographs the ground below, such as an intersection or road, and an image (an image for calling attention, etc.) specified based on the photographed information is projected and displayed from the projector onto the road surface in the lower area, which is the road. Patent Document 1 also discloses projecting and displaying an image of a pedestrian crossing or an image of a stop sign for vehicles to temporarily stop on the road surface of an intersection without traffic lights, and projecting and displaying an image notifying the presence of a fallen object, an image notifying the intrusion of an animal, or an image notifying the occurrence of a traffic jam on the road surface of a highway.

JP 2018-84955 A

The inventors of the present invention have considered displaying images on areas other than the road surface as a display format for images in this type of information display system. The inventors of the present invention have come to the new realization that, as a method for effectively calling attention or presenting advertisements, projecting images onto a moving object rather than onto a fixed object such as the road surface, can provide unprecedentedly effective attention and advertisement presentation (presentation of advertisements with high appeal).

The present invention was made in consideration of these points, and its purpose is to provide an information display system that can provide unprecedented and effective warnings and advertisements.

The solution of the present invention for achieving the above-mentioned object is directed to an information display system having an information acquisition unit that acquires information of a specified area including a moving body, a display information identification unit that identifies information to be displayed based on the information acquired by the information acquisition unit, and a projection means that projects an image of the information identified by the display information identification unit onto the specified area, and is further provided with a projection control unit that causes the projection means to project the image onto the moving body in accordance with the movement of the moving body, and the image projected from the projection means onto the moving body is for presenting an advertisement, and the moving bodies are targeted to include vehicles waiting at an intersection with traffic lights and vehicles passing through the intersection, the image presenting the advertisement that is projected onto the vehicle waiting for the light to turn on and the image presenting the advertisement that is projected onto the vehicle passing through the intersection are mutually related images, and the image projected onto the vehicle waiting for the light to turn on is an image of a product that is the subject of advertising, while the image projected onto the vehicle passing through the intersection is an image intended to improve the image of the product .

Due to this specification, the projection of the image from the projection means onto the moving object is performed by following the movement of the moving object under the control of the projection control unit. In other words, the image projected from the projection means also moves as the moving object moves. Therefore, compared to the conventional technology in which an image was projected onto a fixed object such as the road surface, it is possible to realize more effective attention-raising and advertisement presentation.

In the present invention, when the specified information is displayed in a predetermined area by projecting an image from a projection means, the image is projected toward the moving object while following the movement of the moving object. Therefore, compared to the conventional technology in which an image was projected onto a fixed object such as the road surface, it is possible to effectively call attention or present advertisements, and it is possible to provide an information display system that has never been seen before.

1 is a diagram showing a schematic configuration of an information display system according to an embodiment. FIG. 4 is a flowchart showing the procedure of an information display operation in the information display system. FIG. 13 is a conceptual diagram showing a logic circuit for determining whether projection is possible. 1 is a diagram showing an example of a situation in which an advertisement is presented by the information display system, in the vicinity of an intersection; 1 is a diagram showing an example of a situation in which an information display system is used to alert a vehicle driver to an intersection and its surroundings; 13 is a diagram of the vicinity of an intersection showing an example of a situation in which the information display system is alerting pedestrians in a modified example. FIG.

The following describes an embodiment of the present invention with reference to the drawings. In this embodiment, the present invention is applied as an information display system for alerting people (drivers, pedestrians, etc.) in the vicinity of a road intersection and presenting advertisements. In addition, in this embodiment, the information display system is described as having not only a function for projecting (projecting and displaying) an image toward a moving object (a vehicle in this embodiment), but also a function for projecting an image onto the road surface.

-Outline of the information display system-
Fig. 1 is a diagram showing a schematic configuration of an information display system 1 according to this embodiment. Fig. 1 shows a state in which a vehicle V, which is a moving body, approaches the intersection IS from just before the intersection IS, and the vehicle V approaches the intersection IS in the order of a solid line, a dashed line, and a double-dashed line in the figure.

As shown in FIG. 1, the information display system 1 includes a system unit 2 installed at an intersection IS, a cloud server (system management server) 3, and databases 41 and 42. Each of these will be explained below.

The system unit 2 is installed on a traffic light, electric pole, street light, footbridge, building near an intersection, etc. (not shown). As described below, the system unit 2 projects an image from a projection device (projection means) 25 onto the road surface within the intersection IS or toward a vehicle V near the intersection IS, so it is preferably installed at a relatively high position near the intersection IS. In this embodiment, an example in which the system unit 2 is installed on a traffic light will be described (see FIG. 4).

As shown in FIG. 1, the system unit 2 includes an information acquisition unit 21, an information identification unit (functional unit constituting the display information identification unit in the present invention) 22, a communication unit 23, a projection control unit 24, and a projection device 25, which are connected by signal lines to enable mutual transmission and reception of information. In addition, these may be configured to enable mutual transmission and reception of information wirelessly using a well-known communication means such as Bluetooth (registered trademark).

The information acquisition unit 21 includes a camera that captures images of vehicles V approaching the intersection IS and the surroundings of the intersection IS (such as the road surface conditions and pedestrians around the intersection IS) to generate image data, and Lidar (Light Detection and Ranging) that measures the distance to the vehicle V by scanning with a laser to obtain a three-dimensional distance image. As the camera, a CCD (Charge Coupled Device) camera, an infrared camera, etc. can be used.

The information acquisition unit 21 also includes an ITS (Intelligent Transport System) device as a wireless communication device, and when a vehicle V equipped with an ITS connect unit (not shown) capable of communicating with the ITS device approaches an intersection IS, communication with the ITS connect unit is possible. This communication is, for example, V2I (Vehicle-to-Roadside-Infrastructure) communication, and short-range wireless communication using a dedicated frequency can be applied.

Information that can be obtained by cameras, Lidar, and ITS devices includes information on the shape (vehicle type) of the vehicle V, vehicle speed information, vehicle control information, image projection permission information, and information about the area around the intersection IS.

The shape of the vehicle V (for example, the surface shape of the engine hood, side doors, back door, etc.) can be recognized from an image captured by a camera or Lidar. The shape of the vehicle V may be recognized by identifying the vehicle type through communication with the ITS Connect unit (obtaining vehicle type information through communication). In other words, a database that associates the vehicle type with the shape of the vehicle V may be provided in advance, and the shape of the vehicle V may be recognized by identifying the vehicle type through communication. The vehicle speed can be calculated by recognizing the movement amount of the vehicle V per unit time from an image captured by a camera or Lidar. The vehicle speed information (vehicle speed information detected by an on-board vehicle speed sensor) may be obtained from the vehicle V through communication with the ITS Connect unit. Examples of vehicle control information include information on the amount of depression of the accelerator pedal or brake pedal by the driver (information detected by an on-board accelerator opening sensor or brake pedal switch), and this information can also be obtained from the vehicle V through communication with the ITS Connect unit. Furthermore, although the information display system 1 according to this embodiment projects images onto the exterior of the vehicle V (such as the engine hood, side doors, or back doors), some drivers may not want images to be projected onto their own vehicle V. For this reason, an image projection refusal switch is provided inside the vehicle V equipped with an ITS connect unit, and image projection can be refused by turning this switch ON (or by tapping the image projection refusal button that can be displayed on the mode switching screen on the in-vehicle monitor). Information on whether or not the image projection refusal switch or the like is turned ON (the image projection refusal mode is set) (the image projection permission information) can also be obtained by communication with the ITS connect unit. Examples of information on the periphery of the intersection IS include the condition of the road surface around the intersection IS based on image data acquired by a camera or Lidar, and information on the position, speed, and direction of a pedestrian. The acquired information is transmitted from the information acquisition unit 21 to the information identification unit 22.

The information identification unit 22 receives various information from the information acquisition unit 21 (information on the shape of the vehicle V, information on vehicle speed, vehicle control information, image projection permission information, information on the area around the intersection IS, etc.), and from this information, identifies the road conditions around the intersection IS (traffic volume, weather, whether an accident has occurred, etc.), the conditions of the vehicle V approaching the intersection IS (shape, position, speed, direction of travel, etc. of the vehicle V), and the condition of the road surface. Note that weather information as the road conditions around the intersection IS may be acquired by the information acquisition unit 21 as described above, or may be acquired as weather information by the cloud server 3 described below.

The information identification unit 22 also has the functions of transmitting this information (identification information) to the communication unit 23, receiving information extracted by the cloud server 3 described below via the communication unit 23, and identifying an image to be projected by the projection device 25 from the received information and transmitting this information to the projection control unit 24. The identification information transmitted from the information identification unit 22 to the communication unit 23 is transmitted to the cloud server 3 by the communication unit 23, and the information transmitted to this cloud server 3 also includes information requesting an image corresponding to the information acquired by the information acquisition unit 21.

The communication unit 23 is configured to be capable of wirelessly communicating with the cloud server 3 via a network, and wirelessly transmits to the cloud server 3 various pieces of information received from the information identification unit 22 (information on the shape of the vehicle V, information on vehicle speed, vehicle control information, information on permission for image projection, information on the periphery of the intersection IS, etc., as well as information requesting an image). The communication unit 23 also receives information extracted by the cloud server 3 from the databases 41, 42 (information on the image in response to the request) from the cloud server 3, and transmits the information to the information identification unit 22.

Based on information received from the information identification unit 22 via the communication unit 23 (including information requesting an image), the cloud server 3 extracts from the databases 41 and 42 images suitable for the request (images for calling attention or images for presenting advertisements) to be projected onto the road surface at the intersection IS or onto the vehicle V. For example, depending on the status of the traffic lights at the intersection IS (such as which traffic light is red), the speed of the vehicle V traveling toward the intersection IS, the number of pedestrians around the intersection IS, etc., images suitable for projection onto the road surface at the intersection IS or onto the vehicle V at the current time will be extracted from the databases 41 and 42. The cloud server 3 then transmits the extracted images to the information identification unit 22 via the communication unit 23.

The databases 41, 42 include a first database 41 that stores vehicle information and road surface information, and a second database 42 that stores image information (image information for calling attention and image information for presenting advertisements). In response to the image request, the cloud server 3 refers to the data stored in each database 41, 42, extracts a specific image, and transmits the image information to the information identification unit 22 via the communication unit 23.

The projection control unit 24 receives information from the information identification unit 22 (information extracted by the cloud server 3 and sent to the information identification unit 22) and controls the projection device 25 based on this information.

The projection device 25 includes projectors 25a and 25b. The one shown in FIG. 1 includes a road surface projector 25a and a moving body projector 25b. The road surface projector 25a is for projecting an image onto the road surface, and is configured to project an image, for example, toward the center of an intersection IS according to image information received from the projection control unit 24. The moving body projector 25b is for projecting an image onto a moving body. In this embodiment, it projects an image onto a vehicle V as a moving body, and is configured to project an image onto the outer surface of the vehicle V, such as the engine hood, side doors, or back door, according to image information received from the projection control unit 24.

In particular, projection mapping is used as a method for projecting an image from the moving body projection projector 25b onto the vehicle V. This projection mapping is a technique known as a method of outputting CG (Computer Graphics) created by a computer from a projector and mapping the image onto a real three-dimensional object. In this embodiment, information on the shape of the vehicle V is acquired by the information acquisition unit 21, and the image information received from the information identification unit 22 is processed according to the shape of the vehicle V (the surface shape of the specific area of the vehicle V onto which the image is to be projected), so that the image is projected onto a specific area of the vehicle V. In addition, the projection range of the image by this projection mapping is a predetermined range within the intersection IS.

Note that the system unit 2 shown in FIG. 1 has a projection device 25 equipped with a road surface projector 25a and a moving object projector 25b. However, if multiple system units 2 are installed at an intersection IS, some system units 2 may only have one of the road surface projector 25a and the moving object projector 25b.

As a feature of this embodiment, the projection control unit 24 is configured to project an image from the moving body projector 25b of the projection device 25 onto the vehicle V in accordance with the movement of the vehicle V. Specifically, the moving body projector 25b is provided with a mechanism (not shown) that can change the projection direction of the image. As an example of the configuration of this mechanism, the optical axis of the projection lens of the moving body projector 25b is changed by a motor or the like, and the projection direction of the image is changed by the operation of this motor. In addition, the projection direction of the image may be changed by using multiple rotatable mirrors.

The projection control unit 24 receives information on the position of the vehicle V recognized by the information acquisition unit 21 through the information identification unit 22, and outputs an operation command signal to the motor so that the projection direction of the image is changed toward the position of the vehicle V. As a result, the image projection from the moving body projector 25b follows the movement of the vehicle V, and the image projected from the moving body projector 25b also moves as the vehicle V moves. For example, when projecting an image on a side door of the vehicle V, the image projected from the moving body projector 25b is moved so that the image projection on the side door continues even if the vehicle V moves. Also, FIG. 1 shows a case where an image is projected on the engine hood of the vehicle V, and as the vehicle V moves in the order of the solid line, the dashed line, and the two-dot dashed line in the figure, the projection direction of the image from the moving body projector 25b is also changed in the order of the solid line, the dashed line, and the two-dot dashed line in the figure.

- Information display operation -
Next, an information display operation by the information display system 1 configured as described above will be described. Fig. 2 is a flowchart showing the procedure of this information display operation. This flowchart is executed when a vehicle V approaching an intersection IS is recognized.

First, in step ST1, the information acquisition unit 21 acquires various information (information on the shape of the vehicle V, vehicle speed information, vehicle control information, image projection permission information, information on the surroundings of the intersection IS, etc.) using a camera, Lidar, or ITS device.

In step ST2, the information identification unit 22 receives various information from the information acquisition unit 21, and thereby identifies the road conditions around the intersection IS (traffic volume, weather, whether or not an accident has occurred, etc.), the conditions of the vehicle V approaching the intersection IS (shape, position, speed, direction of travel, etc. of the vehicle V), and the condition of the road surface. This generates information requesting an image according to the identification result.

In step ST3, the communication unit 23 transmits the request information (information requesting an image according to the identification result) generated by the information identification unit 22 to the cloud server 3.

In step ST4, the cloud server 3 extracts an image from the databases 41, 42 based on the information received from the information identification unit 22 (including information requesting an image) that corresponds to the request as an image to be projected onto the road surface of the intersection IS or onto the vehicle V.

In step ST5, the projection control unit 24 receives information about the image extracted by the cloud server 3 via the information acquisition unit 21 and the information identification unit 22, and determines whether or not this image can be projected onto the road surface of the intersection IS or onto the vehicle V. Below, a specific method for determining whether or not this image can be projected (determining whether or not the image can be projected) will be described.

(Determining whether or not to project an image)
FIG. 3 is a conceptual diagram showing a logic circuit for determining whether or not an image can be projected.

As shown in FIG. 3, the decision as to whether or not an image can be projected is made based on the road condition conditions, the vehicle condition, and the road surface condition. In other words, the road condition conditions include that there are no problems with image projection (hereinafter referred to as the road condition being satisfied), the vehicle condition includes that the vehicle is a vehicle that can be used as a target for image projection (hereinafter referred to as the vehicle condition being satisfied), and the road surface condition includes that the road surface state is such that the image can be used as a target for image projection (hereinafter referred to as the road surface condition being satisfied). Only when at least one of the vehicle condition and the road surface condition is satisfied (see the OR circuit in FIG. 3) and the road condition is satisfied (see the AND circuit in FIG. 3), is it possible to project an image onto the road surface at the intersection IS or onto the vehicle V.

Specifically, road conditions include traffic volume conditions, weather conditions, and accident conditions. The traffic volume conditions are not satisfied when there is extremely little traffic or when continuous image projection due to congestion or the like may cause traffic obstruction, and are satisfied otherwise (when traffic volume is relatively high and projection of images does not cause traffic obstruction). The weather conditions are not satisfied when there is a possibility that the driver may be dazzled when an image is projected due to the influence of rain, fog, snow, etc., and are satisfied otherwise. The accident conditions are not satisfied when an accident has occurred or the image may cause an obstruction to accident processing, and are satisfied otherwise. If the traffic volume conditions, weather conditions, and accident conditions are all satisfied and it is determined that there is no problem with the projection of the image, "1" is output to the AND circuit, and if at least one of these conditions is not satisfied and it is determined that there is a problem with the projection of the image, "0" is output to the AND circuit.

In addition, as for the vehicle conditions, if the vehicle V is not an emergency vehicle, is not a vehicle displaying other advertisements (such as a vehicle equipped with so-called signage), is not a vehicle that may interfere with operation if an image is projected onto it (such as a nursing vehicle), and the image projection refusal switch is not turned on (not in a mode to refuse image projection), then it is determined that the vehicle can be the target for image projection, and a "1" is output to the OR circuit; if at least one of these conditions is not met (for example, if the vehicle V is an emergency vehicle), then it is determined that the vehicle cannot be the target for image projection (is not eligible), and a "0" is output to the OR circuit.

In terms of road surface conditions, if the road is not under construction, there are no puddles, the road is not flooded, there is no snow, and there is no unusual road surface drawing (e.g., graffiti), it is determined that the road surface can be used for image projection, and a "1" is output to the OR circuit; if at least one of these conditions is not met (e.g., if there are puddles), it is determined that the road surface cannot be used for image projection, and a "0" is output to the OR circuit.

If at least one of the vehicle condition and road surface condition outputs is "1", then the OR circuit outputs "1" to the AND circuit. On the other hand, if both the vehicle condition and road surface condition outputs are "0", then it is determined that image projection is not possible.

Even if the OR circuit outputs "1" to the AND circuit, if the road condition output is "0", it is determined that image projection is not possible. Also, if the OR circuit outputs "1" to the AND circuit and the road condition output is "1", it is determined that image projection onto the road surface at the intersection IS and onto the vehicle V is possible.

In this way, a determination is made as to whether or not the image can be projected. If the image cannot be projected and a NO determination is made in step ST5, the process moves to step ST6, where the image projection is interrupted, and the process moves to step ST12.

On the other hand, if it is possible to project an image and a YES judgment is made in step ST5, the process proceeds to step ST7, where the content of the image information extracted by the cloud server 3 (projection content) is judged. Specifically, it is judged whether the content of this image information corresponds to an advertisement or a warning. This judgment is made by reading the information included in the image information extracted by the cloud server 3, which also includes information as to whether the image corresponds to an advertisement or a warning.

If the content of the image information corresponds to an advertisement, the process proceeds to step ST8, where it is determined whether the automobile traffic lights at the intersection IS are red. More specifically, if the intersection IS is a scramble intersection, it is determined whether all automobile traffic lights are red and all pedestrian traffic lights are green. This step is for projecting an image presenting an advertisement in a situation where a vehicle V is not entering the intersection IS.

If the determination is NO, the process returns to step ST7, whereas if the determination is YES, the process proceeds to step ST9, where an image presenting the advertisement (advertising image) is projected onto the road surface of the intersection IS and onto the vehicle V. That is, an image is projected from the road surface projector 25a onto the road surface of the intersection IS, and an image is projected from the moving body projector 25b onto the vehicle V.

Figure 4 is a diagram of the area around an intersection IS showing an example of a situation in which an advertisement is presented by the information display system 1. This figure shows a state in which an advertisement image of food (more specifically, pizza) is projected and displayed on the road surface and on a vehicle V. More specifically, an advertisement image of food is projected from the system unit 2A attached to traffic light TL1 (from the road surface projector of the projection device in the system unit 2A) toward the center of the intersection IS. Also, from the system unit 2B attached to traffic light TL2 (from the mobile body projector of the projection device in the system unit 2B), an advertisement image of food is projected toward the side of a vehicle V1 waiting for a traffic light just before the intersection IS, and an image of a smiling face (an advertisement image that improves the image of the food) is projected toward the side of a vehicle V2 that has passed the intersection IS. Furthermore, from the system unit 2C attached to the traffic light TL3 (from the mobile body projection projector of the projection device in the system unit 2C), a smiling face image (advertising image that improves the image of food) is projected toward the front of the vehicle V3 waiting for the traffic light in front of the intersection IS and toward the back of the vehicle V4 that has passed the intersection IS. In this case, the food image projected in the center of the intersection IS may be moved toward the smiling face image to create an image of the smiling face image eating food (connecting multiple images). As described above, the projection of the image from the mobile body projection projector 25b of the projection device 25 toward the vehicles V2 and V4 is performed by following the movement of the vehicles V2 and V4. Specifically, for the vehicles V2 and V4 traveling while passing the intersection IS, the projector 25b for mobile body projection projects an image toward the vehicles V2 and V4 so as to follow the movement of the vehicles V2 and V4.

By projecting such advertising images, it is possible to effectively present advertising (presenting advertising with a high appeal) to the occupants of vehicles V1 and V3 waiting for the traffic light in front of the intersection IS, and to pedestrians H walking near the intersection IS.

If it is determined in step ST7 that the content of the image information corresponds to a warning, the process proceeds to step ST10, where it is determined whether the traffic light for automobiles at the intersection IS is not red. This step is for projecting an image to warn the driver when the vehicle V enters the intersection IS.

If the answer is NO, the process returns to step ST7. If the answer is YES, the process proceeds to step ST11, where the warning image is projected onto the road surface at the intersection IS.

5 is a diagram of an intersection IS and its surroundings showing an example of a situation in which the information display system 1 is calling the attention of the driver of the vehicle V. In FIG. 5, in a situation in which the right-turn arrow of the traffic light TL is on at an intersection IS having a right-turn exclusive lane RL, the driver of the vehicle V traveling on the right-turn exclusive lane RL is informed of the position of the vehicle at the timing when the right-turn arrow goes out. Specifically, the time from the current time until the timing when the right-turn arrow goes out, the current vehicle speed of the vehicle V, and vehicle control information (vehicle speed information acquired by the information acquisition unit 21 and acceleration and deceleration of the vehicle V based on the vehicle control information) are used to display the route on which the vehicle V is traveling with the right-turn arrow turned out when the vehicle V enters the intersection IS by image projection on the road surface. In FIG. 5, the area with dashed diagonal lines is the area of the route on which the vehicle V is traveling with the right-turn arrow turned out. In other words, the driver is instructed that if the vehicle enters the intersection IS in the current driving state, the right turn arrow will be turned off when the vehicle reaches position A in the intersection. More specifically, an image is displayed in which the area with the dashed diagonal lines is filled with red or yellow. The driver can determine whether or not to enter the intersection IS by looking at this projected image. Projecting such an image to alert the driver of the vehicle V can effectively alert the driver.

In FIG. 5, an image is projected onto the road surface at the intersection IS to alert the driver of vehicle V, but an image to alert the driver may be projected onto the back (back door, etc.) of the preceding vehicle V. For example, an image showing the time until the traffic light changes from green to yellow (the elapsed time from the current time) may be projected onto the back of the preceding vehicle V (projection of a numerical image).

After projecting an image presenting an advertisement in step ST9 or an image for calling attention in step ST11, the process moves to step ST12, where it is determined whether or not a change in the situation has occurred, such as a change in the traffic light. If no change in the situation has occurred, a NO determination is made in step ST12, and the current image projection state is maintained. On the other hand, if a change in the situation has occurred and a YES determination is made in step ST12, the process moves to step ST13, where it is determined whether or not the current time period is late at night. This is a step for determining that the time period is one in which pedestrians are unlikely to be present, and therefore there is little need to present an advertisement or call attention.

If the current time period is late at night and step ST13 returns YES, this operation (information display operation) is terminated. On the other hand, if the current time period is not late at night and step ST13 returns NO, the process returns to repeat the operations from step ST1. In other words, as a new vehicle V approaching the intersection IS is recognized, the processing operations from step ST1 described above are executed.

The above steps will be repeated.

--Effects of the embodiment--
As described above, in this embodiment, when an image is projected onto the vehicle V by the projection device 25 (more specifically, the moving body projector 25b), the image is projected onto the vehicle V by following the movement of the vehicle V. Therefore, compared to the conventional technology in which images are projected only onto fixed objects such as the road surface, it is possible to effectively call attention or present advertisements, and it is possible to provide an information display system that has never been seen before.

--Modifications--
Next, a description will be given of a modified example in which an image is projected onto the road surface from the road surface projector 25a of the projection device 25 in the information display system 1. This modified example is for projecting an image to alert pedestrians.

Figure 6 is a diagram of an intersection and its surroundings, showing an example of a situation in which a pedestrian H is being alerted by the information display system. In this modified example, the system unit 2 is installed at a pedestrian traffic light TL, and an image is projected onto the crosswalk CW from the road surface projector 25a of the projection device 25 provided in the system unit 2. Here, an example will be described in which a pedestrian H crosses from the back side to the front side in Figure 6.

Specifically, when the pedestrian traffic light TL is green, the white line WL, whose color changes due to projection, is switched depending on the time from the current time until the pedestrian traffic light TL is switched to red. In the example shown in FIG. 6, the area with dashed diagonal lines indicates the white line WL whose color has changed due to projection. For example, an image is displayed in which the area with dashed diagonal lines is filled with red or yellow. In other words, if the pedestrian H is currently crossing the white line WL whose color has changed due to projection (the side where the pedestrian has completed crossing), the pedestrian H is informed that it is impossible to complete crossing the white line WL before the pedestrian traffic light TL is switched to red if the pedestrian H continues to walk (if the pedestrian continues to walk at the same walking speed). The walking speed in this case may be acquired by the information acquisition unit 21, or may be preset as the walking speed of an ordinary person. The area where the color changes due to this projection (the area on the white line WL) will expand (towards the end of the crossing) over time (as the time until the light turns red becomes shorter).

This makes it possible to warn pedestrians H who are crossing the crosswalk CW and pedestrians H who are about to cross the crosswalk CW. For example, pedestrians H crossing the crosswalk CW can recognize that if they are crossing beyond the white line WL that is changing color due to the projection (on the side where they will have crossed completely), they can continue walking at the same walking speed, and if they are crossing on the white line WL that is changing color due to the projection, they can recognize that they need to choose between increasing their walking speed and crossing the crosswalk CW completely or making a U-turn and returning to the sidewalk.

-Other embodiments-
The present invention is not limited to the above-described embodiment, and all modifications and applications within the scope of the claims and equivalents thereto are possible.

In the above embodiment, an example was described in which food (specifically, pizza) was presented as an advertisement. The present invention is not limited to this, and advertisements for other products may also be presented.

In the above embodiment, an example was described in which the projection device 25 projects an image onto both the road surface and the vehicle V. The present invention is not limited to this, and the projection device 25 may project an image onto only the vehicle V.

In addition, in the above embodiment, the function of the display information identification unit according to the present invention is provided in the information identification unit 22, but this function may also be provided in the projection control unit 24.

In the above embodiment, the moving object projector 25b projects an image toward the vehicle V in response to a control signal from the projection control unit 24 connected to the projection device 25, following the movement of the vehicle V. The present invention is not limited to this, and the projection device 25 may have a built-in projection control unit (not shown), and the moving object projector 25b may project an image toward the vehicle V in response to a control signal from the projection control unit, following the movement of the vehicle V.

The present invention can be applied to information display systems that project and display images based on acquired information.

1 Information display system 21 Information acquisition unit 22 Information identification unit (display information identification unit)
24 Projection control unit 25 Projection device V Vehicle (moving body)

Claims (1)

An information display system including an information acquisition unit that acquires information of a predetermined area including a moving object, a display information specification unit that specifies information to be displayed based on the information acquired by the information acquisition unit, and a projection unit that projects an image of the information specified by the display information specification unit onto the predetermined area,
a projection control unit that causes the projection means to project the image onto the moving body in accordance with the movement of the moving body ,
the image projected from the projection means toward the moving object is for presenting an advertisement,
The mobile object is a vehicle waiting at a traffic light at an intersection and a vehicle passing through the intersection.
An information display system characterized in that the image presenting an advertisement projected onto the vehicle waiting at a traffic light and the image presenting an advertisement projected onto the vehicle passing through the intersection are mutually related images, and the image projected onto the vehicle waiting at a traffic light is an image of a product that is the subject of advertising, while the image projected onto the vehicle passing through the intersection is an image intended to improve the image of the product .

Images