Information display device

Abstract

To appropriately inform drivers of information about road signs. [Solution] The information display device 200 includes a display unit provided on a moving body, an external environment recognition unit 211 that recognizes road signs around the moving body, and a display control unit 213 that controls the display unit to display sign information corresponding to the road signs in the display area of ​​the display unit based on the recognition results of the external environment recognition unit 211. The display unit includes a display unit 61 in which sign information is displayed individually or in which multiple sign information is displayed adjacent to each other, and a display unit 62 different from the display unit 61. The display control unit 213 determines whether to display the sign information in the display area of ​​the display unit 61 or the display area of ​​the display unit 62 according to the type of road sign, and controls the display unit to display the sign information in the determined display area.

Description

Technical Field

[0001] The present invention relates to an information display device that displays information for driving assistance.

Background Art

[0002] In recent years, efforts have been actively made to provide access to a sustainable transport system that takes into account people in vulnerable positions among traffic participants. In order to achieve this, research and development on driving assistance technology has focused on further improving traffic safety and convenience through research and development. As a device of this type, conventionally, when a road sign is recognized from a front image of the host vehicle obtained by an in-vehicle camera, whether to display the information of the road sign on a display device is switched based on the forward and backward traveling directions or the shift position of the host vehicle (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, various road signs are provided on the road. Therefore, it is difficult to appropriately notify the driver of information corresponding to various road signs only by simply switching the display and non-display of the information of the road sign as in the device described in Patent Document 1 above.

Means for Solving the Problems

[0005] An information display device according to one aspect of the present invention comprises a display unit provided on a moving body, a recognition unit that recognizes road signs around the moving body, and a display control unit that controls the display unit to display sign information corresponding to the road signs in the display area of ​​the display unit based on the recognition result of the recognition unit. The display unit includes a first display unit that displays at least sign information individually or displays multiple sign information adjacent to each other, and a second display unit located at a different position from the first display unit. The display control unit determines whether to display the sign information in the display area of ​​the first display area or the display area of ​​the second display area according to the type of road sign, and controls the display unit to display the sign information in the determined display area. [Effects of the Invention]

[0006] According to the present invention, information about road signs can be appropriately communicated to the driver. [Brief explanation of the drawing]

[0007] [Figure 1A] A diagram showing an example of a vehicle interior to which an information display device according to an embodiment of the present invention is applied. [Figure 1B] A diagram showing an example of a screen displayed in the instrument's display area. [Figure 2] A block diagram showing a schematic configuration of an information display device according to an embodiment of the present invention. [Figure 3] A schematic diagram showing the driver's field of vision while driving. [Figure 4] A flowchart showing an example of the process executed by the controller in Figure 2. [Figure 5A] A diagram showing an example of the display area for an instrument's indicator. [Figure 5B] A diagram showing an example of the display area for an instrument's indicator. [Figure 6] A diagram showing another example of a screen displayed in the instrument's display area. [Modes for carrying out the invention]

[0008] Embodiments of the present invention will be described below with reference to Figures 1A to 6. The information display device according to the embodiment of the present invention is configured to control a display unit provided on the instrument panel of a vehicle. The vehicle to which the information display device according to this embodiment is applied may be referred to as "the vehicle" to distinguish it from other vehicles. In the following description, the case in which the vehicle is a manually operated vehicle equipped with ADAS (Advanced driver-assistance systems) will be used as an example.

[0009] Figure 1A shows an example of a vehicle interior to which an information display device according to an embodiment of the present invention is applied. Figure 1A shows a front view of the front of the interior of a right-hand drive vehicle, where the driver's seat is located on the right side of the vehicle, as seen from the rear of the vehicle. Therefore, in Figure 1A, the steering wheel SW is located on the right side of the dashboard (also called the instrument panel) IP, which extends in the vehicle width direction. Note that the information display device according to an embodiment of the present invention is also applicable to left-hand drive vehicles where the driver's seat is located on the left side of the vehicle.

[0010] A windshield glass WG is provided at the front end of the instrument panel IP, extending in the vertical and horizontal directions of the vehicle to demarcate the interior from the exterior. The right end of the windshield glass WG in the horizontal direction is fixed to the inner end in the horizontal direction of the front pillar FP located on the right side of the vehicle. The front end of the front side glass FG is fixed to the outer end in the horizontal direction of the front pillar FP. The left end of the windshield glass WG in the horizontal direction is fixed to a front pillar located on the left side of the vehicle (not shown).

[0011] On the right side of the instrument panel IP, instrument cluster 10 is provided so as to overlap with the steering wheel SW in the vehicle width direction. Instrument cluster 10 is a display having a display area AR1. The display area AR1 displays a tachometer, speedometer, and turn signal indicator lights. In addition, the display area AR1 displays information on road signs recognized while driving (hereinafter referred to as road sign information or simply sign information).

[0012] The windshield glass WG is provided with a display area AR2 for a head-up display (HUD). As shown in Figure 1A, the display area AR2 is located at the bottom of the windshield glass WG so as to be above the instrument 10. The HUD has a projection device (not shown) located at the top of the instrument panel IP, and projects an image onto the display area AR2 using the projection device.

[0013] Figure 1B shows an example of the screen displayed in the display area AR1 of the instrument 10 in Figure 1A, specifically, the screen displayed in the display area AR1 when the adaptive cruise control function, one of the driver assistance functions, is enabled.

[0014] The display area AR1 of the instrument 10 includes four display areas: the sign display area AR11, the support function status display area AR12, the speed display area AR13, and the vehicle status display area AR14.

[0015] The sign display area AR11 displays information about road signs recognized by the vehicle's onboard camera (camera 4, described later) while the vehicle is in motion (hereinafter referred to as road sign information or simply sign information). The left side of the sign display area AR11 (left side in the diagram) displays regulatory signs such as no U-turn, no crossing, no entry, stop sign, and no overtaking sign. The right side of the sign display area AR11 (right side in the diagram) displays speed limit regulatory signs. If multiple road signs are recognized while driving, they will be displayed overlappingly, as shown in Figure 1B. In Figure 1B, the road signs in the sign display area AR11 are arranged adjacent to each other on the right and left sides, but the road signs may also be arranged adjacent to each other in directions other than left and right (such as up and down or diagonally).

[0016] The support function status display area AR12 displays information indicating the current status of driver assistance functions such as follow-me assistance, lane keeping assistance, traffic jam assistance, and lane change assistance. In the example in Figure 1B, it shows that the vehicle is following the vehicle in front.

[0017] In the speed display area AR13, the current driving speed of the host vehicle is displayed. In the vehicle state display area AR14, information indicating the ON / OFF state of various functions of the vehicle including the driving support function, information indicating an abnormal state of the vehicle, etc. are displayed. In the example of FIG. 1B, information (icon) indicating that the follow-up driving support function is operating at the set vehicle speed of 60 km / h is displayed.

[0018] Note that in the display area AR1, a tachometer, a speedometer, a direction indicator display lamp, a high-voltage battery remaining amount meter, a fuel system, etc. are displayed. However, for the sake of simplicity of the figure, illustration of the display areas corresponding thereto is omitted.

[0019] By the way, when a road sign installed on the driving lane of the host vehicle is a road sign indicating a rule that the vehicle should follow, such as a regulatory sign, the driver needs to perform a driving operation so that the host vehicle travels in accordance with the road sign. However, as shown in FIG. 1B, if all the sign information corresponding to the road signs that the driver should follow is displayed in the sign display area AR11, the visibility of the sign information decreases. In this case, there is a risk that the driver cannot correctly recognize the display of the sign information and performs an incorrect driving operation with respect to the road sign. Therefore, in order to address such a problem, in the present embodiment, the information display device is configured as follows.

[0020] FIG. 2 is a block diagram showing a schematic configuration of an information display device 200 according to an embodiment of the present invention. As shown in FIG. 2, the information display device 200 includes a controller 20, a vehicle speed sensor 1, a yaw rate sensor 2, a seat position sensor 3, a camera 4, a positioning unit 5, display units 61 and 62, and a communication unit 7.

[0021] The vehicle speed sensor 1 detects the driving speed of the host vehicle. The yaw rate sensor 2 detects the rotational angular velocity of the center of gravity of the host vehicle around the vertical axis. The seat position sensor 3 detects the seat position of the driver's seat. The seat position of the driver's seat includes the height of the seating surface of the seat cushion of the driver's seat, the position of the seat cushion in the front-rear direction, the reclining angle of the seat back, etc.

[0022] Camera 4 is a stereo camera having an image sensor such as a CCD or CMOS. Camera 4 may also be a monocular camera. Camera 4 detects the external environment around the vehicle. Camera 4 is mounted, for example, at a predetermined position on the front of the vehicle and continuously images the space in front of the vehicle to acquire images of objects. These objects include road signs placed on the vehicle's route.

[0023] The positioning unit (GNSS unit) 5 has a positioning sensor that receives positioning signals transmitted from positioning satellites. Positioning satellites are artificial satellites such as GPS satellites and quasi-zenith satellites. The positioning unit 5 uses the positioning information received by the positioning sensor to measure the current position (latitude, longitude, altitude) of the vehicle.

[0024] The display unit 61 constitutes the instrument 10 in Figure 1A. The display unit 62 constitutes a HUD having a display area AR2 in Figure 1A and a projection device that projects an image onto the display area AR2.

[0025] The communication unit 7 communicates with various servers (not shown) via a network including wireless communication networks such as the Internet and mobile phone networks, and acquires map information, driving history information, and traffic information from the servers periodically or at arbitrary times. The network includes not only public wireless communication networks but also closed communication networks established for each designated management area, such as wireless LAN, Wi-Fi (registered trademark), Bluetooth (registered trademark), etc. The acquired map information is output to the storage unit 22. As a result, the road map information stored in the storage unit 22 is updated as needed. Communication with other vehicles is also possible via the communication unit 7.

[0026] The controller 20 is comprised of a computer having an arithmetic unit 21 such as a CPU (microprocessor), a storage unit 22 such as ROM or RAM, and other peripheral circuits (not shown) such as an I / O interface.

[0027] The memory unit 22 stores high-precision road map information. This road map information includes road location information, road shape information (such as curvature), road gradient information, intersection and junction location information, number of lanes information, lane width and location information for each lane (information on the center position of the lane and the boundary lines of the lane positions), and location information of landmarks on the map (traffic lights, signs, buildings, etc.).

[0028] The calculation unit 21 has, functionally speaking, an external environment recognition unit 211, a behavior detection unit 212, and a display control unit 213.

[0029] The external environment recognition unit 211 recognizes the external environment surrounding the vehicle. Specifically, the external environment recognition unit 211 performs pattern matching between the image captured in front of the vehicle by the camera 4 and images of various road signs (correct images) stored in the memory unit 22 in advance, and recognizes road signs on the vehicle's path included in the captured image. The external environment recognition unit 211 recognizes not only the presence or absence of road signs, but also the type of road sign.

[0030] Furthermore, the external environment recognition unit 211 recognizes the structure and shape of the road in the direction of travel of the vehicle based on the image captured in front of the vehicle by the camera 4.

[0031] The behavior detection unit 212 detects the behavior of the vehicle. Specifically, the behavior detection unit 212 detects the vehicle's behavior based on the driver's driving operations, using the values ​​detected by the vehicle speed sensor 1 and the yaw rate sensor 2. The vehicle speed sensor 1 and the yaw rate sensor 2 are examples of internal sensors that detect the vehicle's driving state.

[0032] The internal sensors include, in addition to the vehicle speed sensor 1 and the yaw rate sensor 2, an acceleration sensor (not shown) that detects the longitudinal and lateral acceleration of the vehicle, and a rotational speed sensor (not shown) that detects the rotational speed of the driving power source. The internal sensors may also include sensors that detect the driver's driving operations, such as operation of the accelerator pedal, brake pedal, and steering wheel. The behavior detection unit 212 may also detect the vehicle's behavior using internal sensors other than the vehicle speed sensor 1 and the yaw rate sensor 2.

[0033] The display control unit 213 controls the display units 61 and 62 to display sign information corresponding to the road sign in the display areas of the display units 61 and 62, based on the recognition results of the external environment recognition unit 211. More specifically, the display control unit 213 determines whether to display the sign information in the display area AR1 of the display unit 61 (instrument 10) or the display area AR2 of the display unit 62 (HUD), depending on the type of road sign. The display control unit 213 controls the display units 61 and 62 to display the sign information in the determined display area. Specifically, the display control unit 213 transmits a display command to the display unit 61 or the display unit 62 requesting the display of sign information.

[0034] If the recognized road sign is a road sign indicating a restriction on the vehicle's actions or a speed limit (hereinafter referred to as a regulatory sign), the display control unit 213 transmits a display command to the display unit 61. At that time, the display control unit 213 transmits information specifying the sign display area AR11 as the display target area to the display unit 61 along with the display command.

[0035] Even if the recognized road sign is a regulatory sign, if that road sign is a regulatory sign indicating no entry, the display control unit 213 transmits a display command to the display unit 62. The display control unit 213 also transmits a display command to the display unit 62 if the recognized road sign is a road structure sign. In this case, the display control unit 213 determines the display position of the sign information in the display area AR2 based on the road structure recognized by the external environment recognition unit 211. The display control unit 213 transmits information indicating the determined display position to the display unit 62 along with the display command.

[0036] When predetermined conditions are met, the display control unit 213 transmits a termination command to the display unit 61 or 62 requesting the termination of the display of sign information. More specifically, when the external environment recognition unit 211 recognizes a road sign along with an auxiliary sign attached to the road sign, the display control unit 213 transmits a termination command to terminate the display of the road sign when the vehicle has passed the road sign and traveled a distance predetermined by the auxiliary sign. Also, when the external environment recognition unit 211 recognizes an auxiliary sign indicating the end of a regulation corresponding to the displayed road sign, the display control unit 213 transmits a termination command to terminate the display of that road sign.

[0037] Here, we will explain how to determine the display position of sign information in the display area AR2. Figure 3 is a schematic diagram showing the driver's field of view while driving, specifically the space in front of the vehicle as seen by the driver through the windshield glass WG. Figure 3 shows an example of the field of view of a driver operating their own vehicle while driving on the entrance ramp EN to a roundabout. On the left side of the entrance ramp EN, there is a sign SG1 indicating clockwise traffic in the roundabout, and on the right side of the entrance ramp EN, there is a sign SG2 indicating that entry from the entrance ramp EN to the exit ramp EX is prohibited.

[0038] The dashed rectangle shown in Figure 3 schematically represents the display area AR2 on the windshield glass WG, where images are projected by the projection device of the display unit 62 (HUD). Images IM1 to IM5 are projected onto the display area AR2 as information related to driver assistance.

[0039] Image IM1 shows information indicating the vehicle's position at a predetermined time in the future. Image IM2 shows information indicating the shape of the road ahead of the vehicle as recognized by the external environment recognition unit 211. The arrow shown in Image IM2 indicates that the road ahead of the vehicle curves to the left. Image IM3 shows information indicating the vehicle's speed. Images IM4 and IM5 are sign information corresponding to signs SG1 and SG2 recognized by the external environment recognition unit 211.

[0040] The display control unit 213 estimates the position of the driver's head (specifically, the eyes) based on the seat position of the driver's seat acquired by the seat position sensor 3. Based on the estimated position of the driver's head, the position of the display area AR2 on the windshield glass WG, and the structure and shape of the road in front of the vehicle recognized by the external environment recognition unit 211, the display control unit 213 determines the display position of images IM1 to IM5 in the display area AR2. At this time, the display control unit 213 determines the display positions of images IM1 to IM5 so that they overlap with an appropriate position in the driver's field of view. In detail, the display control unit 213 predicts the driving position of the vehicle at a predetermined time in advance based on the detection values ​​of internal sensors such as the vehicle speed sensor 1 and the yaw rate sensor 2. The predicted driving position is called the predicted driving position. The display control unit 213 determines the display position of image IM1 so that image IM1 overlaps with the vicinity of the predicted driving position in the driver's field of view. The display control unit 213 also determines the display position of image IM2 so as to correspond to the display position of image IM1. Furthermore, the display control unit 213 determines the display position of image IM3, which indicates the driving speed, to a predetermined position (lower right in the example of Figure 3). In addition, the display control unit 213 determines the display positions of sign information (images IM4, IM5) within the display area AR2. Based on the road structure recognized by the external environment recognition unit 211, the display control unit 213 determines the display position of image IM5, which corresponds to the road sign indicating no entry. Specifically, as shown in Figure 3, the display position of image IM5 is determined so that, in the driver's field of view, image IM5, which corresponds to the road sign indicating no entry, overlaps near the boundary between the entrance road EN and the exit road EX. On the other hand, sign information that simply represents the road structure in the direction of travel, such as image IM4, is determined to be displayed at a predetermined position within the display area AR2 (lower left in the example of Figure 3). Note that, as shown in Figure 3, the display control unit 213 may determine the display size of each sign information so that the sign information corresponding to no entry is displayed larger than the sign information representing the road structure in the direction of travel. Furthermore, the display control unit 213 may simply determine the display position of sign information representing the road structure in the direction of travel based on the road structure recognized by the external environment recognition unit 211.

[0041] Figure 4 is a flowchart showing an example of a process executed by the controller 20 in Figure 2 according to a predetermined program. The process shown in this flowchart is repeated at predetermined intervals when, for example, a predetermined driving assistance function such as a traffic sign recognition function is activated in response to a driver command.

[0042] First, in step S1, it is determined whether or not a road sign has been recognized. If the result in step S1 is negative, the process ends. If the result in step S1 is positive, in step S2, the display area for the recognized road sign (hereinafter referred to as the recognized sign) is determined based on the type of road sign recognized in step S1. Specifically, if the recognized sign is a regulatory sign, the display area is determined to be the sign display area AR11, and if the recognized sign is a road sign representing road structure or a road sign indicating no entry, the display area is determined to be the display area AR2.

[0043] In step S3, it is determined whether the recognition sign is a road sign indicating no entry. If the result in step S3 is negative, the process proceeds to step S5. If the result in step S3 is positive, in step S4, the display position of the recognition sign, specifically the display position of the recognition sign in the display area AR2, is determined based on the road structure recognized by the external environment recognition unit 211.

[0044] In step S5, a display command for the recognition sign is transmitted to the display unit 61 or 62, along with information indicating the display area determined in step S2. If the display position has been determined in step S4, information indicating that display position is also transmitted.

[0045] This embodiment can produce the following effects and benefits. (1) The information display device 200 includes a display unit installed on the vehicle as a moving object, an external environment recognition unit 111 that recognizes road signs around the vehicle, and a display control unit 213 that controls the display unit to display sign information corresponding to the road signs in the display area of ​​the display unit based on the recognition results of the external environment recognition unit 111. The display unit includes a display unit 61 as a first display unit that displays sign information individually or displays multiple sign information adjacent to each other, and a display unit 62 as a second display unit located at a different position from the first display unit. The display control unit 213 determines whether to display the sign information in the display area AR1 of the display unit 61 or the display area AR2 of the display unit 62, depending on the type of road sign, and controls the display unit to display the sign information in the determined display area. In this way, by differentiating the display location according to the type of road sign, information about road signs can be effectively and clearly communicated to the occupants compared to the case where all types of road signs are displayed in the same location.

[0046] (2) Display unit 61 and display unit 62 are different displays. More specifically, display unit 61 is a single display (instrument 10) provided on the instrument panel of the vehicle. Display unit 62 is a head-up display. This configuration allows for the effective display of road signs on each of the different displays according to the type of road sign. Furthermore, it allows for the effective display of road signs according to the type of display.

[0047] (3) The display area AR1 (more specifically, the sign display area AR11) of the display unit 61 (instrument 10) displays sign information corresponding to road signs indicating traffic restrictions or speed limits for the vehicle. The display area AR2 of the display unit 62 (HUD) displays sign information corresponding to road signs indicating road structure or road signs indicating no entry. In this way, by displaying road signs related to traffic restrictions that do not require emergency action or response by the driver, or road signs that apply over a certain section, on the instrument panel side of the instrument 10, excessive warnings to the occupants can be suppressed.

[0048] (4) The external environment recognition unit 211 further recognizes the road structure in the direction of travel of the vehicle. The display control unit 213 determines the display position of the sign information in the display area AR2 of the display unit 62 (HUD) based on the road structure recognized by the external environment recognition unit 211. With this configuration, road signs can be effectively displayed on the HUD in accordance with the road structure in the direction of travel of the vehicle.

[0049] The above embodiment can be modified into various forms. Modifications will be described below. In the above embodiment, the external recognition unit 211, which acts as a recognition unit, recognizes road signs, road structures, and road shapes based on the image captured in front of the vehicle acquired by the camera 4. However, the recognition unit may recognize road signs, road structures, and road shapes based on map information (high-precision map information) stored in the storage unit 22 and the current position of the vehicle measured by the positioning unit 5. Alternatively, road signs on the road may be recognized based on information received from a roadside unit via road-to-vehicle communication through the communication unit 7.

[0050] In the above embodiment, the information display device 200 was applied to a manually driven vehicle equipped with ADAS as a mobile device, but the information display device 200 can also be applied to autonomous vehicles and the like. Furthermore, the mobile device to which the information display device 200 is applied may be something other than a vehicle, such as a self-propelled robot.

[0051] Furthermore, in the above embodiment, when the external environment recognition unit 211 recognizes a regulatory sign indicating a restriction on the vehicle's actions, the display control unit 213 transmits a display command for sign information corresponding to the regulatory sign to the display unit 61 (instrument 10). However, if the road sign recognized by the external environment recognition unit 211 is a regulatory sign, the display control unit may, after transmitting the display command, transmit a highlighting command to the display unit 61 so that when the behavior detection unit 212 detects behavior that violates the restriction, the sign information corresponding to the displayed regulatory sign is highlighted. This effectively alerts the occupants. The highlighting command may be a command to request flashing display of the sign information corresponding to the displayed regulatory sign, a command to request enlarged display of the sign information, or any other command.

[0052] Furthermore, if the road sign recognized by the external environment recognition unit 211 is a regulatory sign indicating a restriction on the vehicle's actions, the display control unit may wait to transmit a display command until the actions in violation of the restrictions are detected by the actions detection unit 212. That is, when the actions in violation of the restrictions are detected by the actions detection unit 212, the display control unit may transmit a display command for sign information corresponding to the regulatory sign to the display unit 61 or 62.

[0053] Figures 5A and 5B show examples of the display in the sign display area AR11 of the instrument 10. Figures 5A and 5B show examples of the display in the sign display area AR11 when a no-passing regulatory sign is recognized. When the external environment recognition unit 211 recognizes a no-passing regulatory sign, the display control unit waits to transmit a display command until overtaking behavior is detected by the behavior detection unit 212 (Figure 5A). The dashed circle in Figure 5A schematically represents the waiting for the display of sign information corresponding to the no-passing regulatory sign (image IM21 in Figure 5B). Subsequently, when overtaking behavior is detected by the behavior detection unit 212, the display control unit transmits a display command for the sign information IM21 to the display unit 61. As a result, the sign information IM21 is displayed in the sign display area AR11 (Figure 5B). With this configuration, when the vehicle is driving in accordance with a regulatory sign, the display of that regulatory sign is suppressed, thus preventing excessive warnings.

[0054] Furthermore, in the above embodiment, if the road sign recognized by the external environment recognition unit 211 is a regulatory sign, the display control unit 213 transmits to the display unit 61 information specifying the sign display area AR11 as the display target area, along with the display command for that road sign. However, if the road sign is a specific regulatory sign (hereinafter referred to as a specific regulatory sign), the display control unit may transmit to the display unit 61 information specifying an area other than the sign display area AR11 as the display target area, along with the display command for that road sign.

[0055] Figure 6 shows another example of a screen displayed in the display area AR1 of the instrument 10. In the display area AR1 of the instrument 10 in Figure 6, there is a sign display area AR11 as a first display area and a sign display area AR15 as a second display area, spaced apart from the sign display area AR11. If the road sign recognized by the external environment recognition unit 211 is a specific regulatory sign, the display control unit may transmit information to the display unit 61 (instrument 10) specifying the sign display area AR15 as the display target area, along with a display command for sign information corresponding to that specific regulatory sign. As shown in Figure 6, the sign display area AR15 has a larger area than the sign display area AR11, making it easier for occupants to recognize the sign information. As a result, it is possible to effectively alert occupants. Although Figure 6 shows an example of a screen with a stop sign displayed in the sign display area AR15, the specific regulatory sign may be a regulatory sign other than a stop sign.

[0056] The above description is merely an example, and the present invention is not limited by the embodiments and modifications described above, as long as the features of the present invention are not impaired. It is also possible to arbitrarily combine one or more of the above embodiments and modifications, and to combine modifications with each other. [Explanation of Symbols]

[0057] 1 Vehicle speed sensor, 2 Yaw rate sensor, 3 Seat position sensor, 4 Camera, 5 Positioning unit, 20 Controller, 21 Calculation unit, 22 Memory unit, 61, 62 Display unit, 211 External environment recognition unit, 212 Behavior detection unit, 213 Display control unit

Claims

1. A display unit installed on a mobile body, A recognition unit that recognizes road signs around the moving object, The system includes a display control unit that controls the display unit to display sign information corresponding to the road sign in the display area of ​​the display unit based on the recognition result of the recognition unit, The display unit includes a first display unit in which at least the sign information is displayed individually or in which multiple pieces of the sign information are displayed adjacent to each other, and a second display unit located at a different position from the first display unit. The information display device is characterized in that the display control unit determines whether to display the sign information in the display area of ​​the first display unit or the display area of ​​the second display unit according to the type of road sign, and controls the display unit to display the sign information in the determined display area.

2. In the information display device according to claim 1, An information display device characterized in that the first display unit and the second display unit are different displays.

3. In the information display device according to claim 2, The first display unit is a single display provided on the instrument panel of the mobile body, The information display device is characterized in that the second display unit is a head-up display.

4. In the information display device described in claim 3, An information display device characterized in that the display area of ​​the first display unit displays sign information corresponding to the road sign that represents a restriction on the movement of the moving object or a speed limit.

5. In the information display device described in claim 3, An information display device characterized in that the display area of ​​the second display unit displays sign information corresponding to the road sign representing the road structure or the road sign representing "no entry".

6. In the information display device described in claim 3, The recognition unit further recognizes the road structure in the direction of travel of the moving body, The information display device is characterized in that the display control unit determines the display position of the sign information in the display area of ​​the second display unit based on the road structure recognized by the recognition unit.

7. In the information display device according to claim 2, The first display unit is characterized by having a first display area in which the sign information is displayed individually or in which multiple pieces of the sign information are displayed adjacent to each other, and a second display area different from the first display area.

8. In the information display device according to claim 7, An information display device characterized in that the second display area is larger in area than the first display area.

9. In the information display device according to claim 7, An information display device characterized in that the sign information corresponding to a stop sign is displayed in the second display area.

10. In the information display device according to claim 1, The system further includes a behavior detection unit for detecting the behavior of the moving body, The information display device is characterized in that, when the road sign recognized by the recognition unit represents a behavioral restriction on the moving object, and the behavioral detection unit detects a behavior that violates the behavioral restriction, the display unit controls the display unit so that the sign information corresponding to the road sign is displayed.

11. In the information display device according to claim 1, The system includes a behavior detection unit that detects the behavior of the moving body, The information display device is characterized in that, when the recognition unit recognizes the road sign, the display unit controls the display unit to display the sign information indicating the road sign, and further, when the road sign represents a behavioral restriction for the moving object, and the behavioral detection unit detects the behavior that violates the behavioral restriction, the display unit controls the display unit to highlight the sign information currently being displayed.

Images