JP2016095789A - Display apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display apparatus capable of urging attention toward a direction other than a direction where another vehicle approaching a vehicle itself exists, in the case of displaying the direction where the other vehicle exists, thus reporting the direction to the driver of a vehicle itself, on the basis of the other-vehicle information obtained through inter-vehicle communication.SOLUTION: A display apparatus includes: a vehicle itself information obtainment part 31 for obtaining vehicle itself information containing a position and progress direction of a vehicle itself; an another vehicle information obtainment part 32 for obtaining another vehicle information containing a position and progress direction of another vehicle; a relative position calculation part 33 for calculating a relative position of the other vehicle relative to the vehicle itself; and a display part 40 capable of displaying an icon representing a vehicle in each of plural given zones. In a case where the distance is equal to or less than a given first threshold, with the other vehicle progressing toward the vehicle itself, an icon is displayed in a given zone corresponding to a direction of existence, of the plural given zones, and the icon is displayed in a given zone other than the given zone corresponding to the direction of existence in a mode different from that of the icon displayed in the given zone corresponding to the direction of existence.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device that displays a direction in which another vehicle approaching the host vehicle exists.

  Conventionally, based on the own vehicle information related to the position and traveling direction of the own vehicle and other vehicle information related to the position and traveling direction of the other vehicle obtained by inter-vehicle communication, the direction in which another vehicle approaching the own vehicle exists is displayed, etc. There is known a technique for displaying the information on the display and notifying the driver. (For example, patent document 1).

JP 2013-175057 A

  However, the driver can be alerted to the direction in which the other vehicle is displayed on the display, but for example, the driver may misunderstand that the other direction does not need to be confirmed. That is, since attention to directions other than the direction where the other vehicle exists displayed on the display cannot be urged, the driver's attention to directions other than the direction where the other vehicle exists displayed on the display may not be sufficient. There is sex.

  Therefore, in view of the above problem, when the direction of the presence of the other vehicle approaching the host vehicle is displayed and notified to the driver of the host vehicle based on the other vehicle information obtained by the inter-vehicle communication, the other vehicle exists. It is an object of the present invention to provide a display device that can call attention to directions other than directions.

In order to achieve the above object, in one embodiment, a display device comprises:
A host vehicle information acquisition unit that acquires host vehicle information including the position and traveling direction of the host vehicle;
Other vehicle information acquisition unit for acquiring other vehicle information including the position and traveling direction of the other vehicle by inter-vehicle communication with another vehicle;
Based on the own vehicle information and the other vehicle information, a relative position of the other vehicle with respect to the own vehicle including a distance between the own vehicle and the other vehicle and a direction in which the other vehicle exists as seen from the own vehicle. A relative position calculation unit for calculating;
A display unit configured to be able to display an icon indicating a vehicle in each of a plurality of predetermined areas on a screen set corresponding to a direction seen from the own vehicle;
The display unit
When the distance is less than or equal to a predetermined first threshold and the other vehicle is moving toward the host vehicle, the predetermined area corresponding to the existing direction is selected from the plurality of predetermined areas. An icon is displayed, and the icon is displayed in a predetermined area other than the predetermined area corresponding to the existing direction in a mode different from the icon displayed in the predetermined area corresponding to the existing direction. .

  According to the present embodiment, based on other vehicle information obtained by inter-vehicle communication, when the direction of the presence of another vehicle approaching the own vehicle is displayed and notified to the driver of the own vehicle, the presence of the other vehicle It is possible to provide a display device capable of prompting attention in a direction other than the direction in which the image is performed.

It is a block diagram which shows an example of a structure of an information notification apparatus. It is a figure which shows an example of the several presence area showing the direction where another vehicle exists. It is a figure which shows an example of the notification method of the presence area of another vehicle. It is a flowchart which shows an example of the information notification process by the information notification apparatus (ECU) which concerns on this embodiment. It is a figure which shows an example of the display screen of a display in case the other vehicle of notification object exists. It is a figure which shows the other example of the display screen of a display in case the other vehicle of notification object exists. It is a figure which shows the further another example of the display screen of a display in case the other vehicle of notification object exists. It is a figure which shows the specific example of the display screen of a display when the other vehicle of notification object does not exist.

  Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings.

  First, the configuration of the information notification device 1 according to the present embodiment will be described.

  FIG. 1 is a block diagram illustrating an example of the configuration of the information notification apparatus 1.

  The information notification device 1 executes driving support for notifying the direction in which the other vehicle 200 approaching the host vehicle 100 exists based on the inter-vehicle communication between the host vehicle 100 and the other vehicle 200 existing around the host vehicle 100. .

  The information notification device 1 includes a vehicle-to-vehicle communication radio device 10 mounted on the host vehicle 100, a GPS (Global Positioning System) receiver 20, an ECU (Electric Control Unit) 30, a display 40, a speaker 50, various sensors 60, navigation. Apparatus 70 and the like.

  The following description will be given on the assumption that the other vehicle 200 that performs inter-vehicle communication with the host vehicle 100 has the same configuration as the host vehicle 100.

  The inter-vehicle communication radio 10 is a communication unit that bidirectionally transmits and receives information to and from other vehicles 200 existing around the host vehicle 100 by predetermined radio communication. The inter-vehicle communication radio 10 transmits the position and traveling direction of the other vehicle 200 (the heading direction of the other vehicle 200) transmitted from the other vehicle 200, and identification information (for example, an ID uniquely set for the other vehicle 200). Other vehicle information including the above is received. The inter-vehicle communication radio device 10 is communicably connected to the ECU 30 via an in-vehicle LAN or the like, and transmits other vehicle information to be received to the ECU 30. Further, the inter-vehicle communication radio 10 transmits the position and traveling direction of the host vehicle 100 (the heading direction of the host vehicle 100) and identification information (for example, an ID uniquely set for the host vehicle 100) transmitted from the ECU 30. The own vehicle information including the above is transmitted to the other vehicle 200.

  The GPS receiver 20 is a communication unit that receives GPS signals from a plurality of GPS satellites (for example, four) existing above the host vehicle 100. The GPS receiver 20 calculates the position (latitude, longitude) of the host vehicle 100 based on these GPS signals. The GPS receiver 20 is communicably connected to the ECU 30 via an in-vehicle LAN or the like, and transmits information regarding the calculated position of the host vehicle 100 to the ECU 30.

  The ECU 30 is an electronic control unit that executes main control processing in the information notification device 1. The ECU 30 is configured by a microcomputer, for example, and may execute various control processes to be described later by executing various programs stored in the ROM on the CPU. The ECU 30 includes a host vehicle information acquisition unit 31, another vehicle information acquisition unit 32, a relative position calculation unit 33, a notification target determination unit 34, a presence area determination unit 35, a notification control unit 36, and the like as functional units. The functions of the host vehicle information acquisition unit 31, the other vehicle information acquisition unit 32, the relative position calculation unit 33, the notification target determination unit 34, the existence area determination unit 35, the notification control unit 36, and the like are stored in the ROM. It may be realized by executing a program to be executed on the CPU.

  The host vehicle information acquisition unit 31 acquires host vehicle information including the position of the host vehicle 100 and the traveling direction (the heading direction of the host vehicle 100). Note that “acquisition” of the position and the traveling direction of the host vehicle 100 means acquiring the position and the traveling direction of the host vehicle 100 by an arbitrary action such as reception, calculation, generation, and correction.

  More specifically, the host vehicle information acquisition unit 31 receives the position (latitude, longitude) of the host vehicle 100 from the GPS receiver 20. In addition, the host vehicle information acquisition unit 31 receives detection signals (vehicle speed signal, steering angle signal, yaw rate signal, etc.) relating to the motion state of the host vehicle 100 received from a vehicle speed sensor, a steering angle sensor, a yaw rate sensor, etc. included in the various sensors 60. The position of the host vehicle 100 received from the GPS receiver 20 may be corrected based on the travel locus calculated by the above. In addition, the host vehicle information acquisition unit 31 may correct the position of the host vehicle 100 received from the GPS receiver 20 based on the map information received from the navigation device 70. In addition, when the GPS receiver 20 cannot receive a GPS signal due to the influence of weather, tunnel, or the like and cannot calculate the position of the own vehicle 100, the own vehicle information acquisition unit 31 Based on the position, the position of the host vehicle 100 is calculated (estimated) based on detection signals received from vehicle speed sensors, steering angle sensors, yaw rate sensors, etc. included in the various sensors 60, map information received from the navigation device 70, and the like. You can do it. In addition, the host vehicle information acquisition unit 31 is based on the time series of the position of the host vehicle 100 to be acquired (for example, the position of the host vehicle 100 acquired this time and the position of the host vehicle 100 acquired last time). Is calculated. In addition, the host vehicle information acquisition unit 31 may correct the traveling direction of the host vehicle 100 based on an orientation signal received from an orientation sensor included in the various sensors 60, map information received from the navigation device 70, and the like.

  In the following, the position of the host vehicle 100 acquired by the host vehicle information acquisition unit 31 and the traveling direction of the host vehicle 100 are referred to as “estimated position of the host vehicle 100” and “estimated traveling direction of the host vehicle 100”. Called.

  The other vehicle information acquisition unit 32 acquires other vehicle information including the position and traveling direction of the other vehicle 200 existing in the vicinity of the host vehicle 100 (the heading direction of the other vehicle 200), identification information, and the like. The other vehicle information acquisition unit 32 acquires the position (latitude, longitude) and traveling direction (the heading direction of the other vehicle 200) of the other vehicle 200 from the inter-vehicle communication radio device 10.

  In the following, as in the case of the host vehicle 100, the position of the other vehicle 200 acquired by the other vehicle information acquisition unit 32 and the traveling direction of the other vehicle 200 are referred to as “estimated position of the other vehicle 200” and “ This is referred to as “estimated traveling direction of other vehicle 200”.

  The relative position calculation unit 33 is based on the host vehicle information acquired by the host vehicle information acquisition unit 31 and the other vehicle information acquired by the other vehicle information acquisition unit 32, and the relative position of the other vehicle 200 viewed from the host vehicle 100 (for example, The distance D between the host vehicle 100 and the other vehicle 200 and the direction of the other vehicle 200 viewed from the host vehicle 100) are calculated.

  In the following, the relative position of the other vehicle 200 viewed from the host vehicle 100 is simply referred to as “the relative position of the other vehicle 200”, and the relative position of the other vehicle 200 calculated by the relative position calculation unit 33 is referred to as “other vehicle 200”. It is referred to as “200 estimated relative positions”.

  The notification target determination unit 34 determines whether or not the other vehicle 200 in a state in which communication is possible through the vehicle-to-vehicle communication radio device 10 is a target to notify the direction in which the other vehicle 200 exists. As will be described later, when the other vehicle 200 is approaching the host vehicle 100, the ECU 30 (notification control unit 36) displays other information viewed from the host vehicle 100 to the driver of the host vehicle 100 through the display 40 and the speaker 50. The direction in which the vehicle 200 exists is notified. Therefore, the notification target determination unit 34 determines whether the other vehicle 200 is the notification target, that is, whether the other vehicle 200 is approaching the host vehicle 100. Specifically, when the distance D between the host vehicle 100 and the other vehicle 200 calculated by the relative position calculation unit 33 is equal to or less than the threshold value Dth and the other vehicle 200 is traveling toward the host vehicle 100, the other It is determined that the vehicle 200 is approaching the host vehicle 100.

  The notification target determination unit 34 determines whether the other vehicle 200 is moving toward the host vehicle 100 based on the host vehicle information and the other vehicle information acquired by the host vehicle information acquisition unit 31 and the other vehicle information acquisition unit 32. You may judge. For example, the notification target determination unit 34 determines that a half line extending in the estimated traveling direction from the estimated position of the host vehicle 100 and a half line extending in the estimated traveling direction from the estimated position of the other vehicle 200 When the vehicle intersects within the range within the threshold Dth described above from the estimated position of 100, it may be determined that the other vehicle 200 is traveling toward the host vehicle 100. In addition, the notification target determination unit 34, when viewed from the estimated position of the other vehicle 200, includes the estimated position of the host vehicle 100 within a range of a predetermined direction angle with respect to the estimated traveling direction of the other vehicle 200. It may be determined that 200 is traveling toward the host vehicle 100.

  Further, the notification target determination unit 34 may determine whether or not the other vehicle 200 is moving toward the own vehicle 100 based on the estimated relative position history of the other vehicle 200 within a predetermined period. For example, the notification target determination unit 34 calculates the relative trajectory of the other vehicle 200 viewed from the own vehicle 100 using the history of the estimated relative position of the other vehicle 200, and the other vehicle 200 changes to the own vehicle 100 from the relative trajectory. It may be determined whether or not the vehicle is moving in the direction.

  Further, the notification target determination unit 34 may determine whether the other vehicle 200 is traveling toward the host vehicle 100 based on the map information received from the navigation device 70. For example, on the basis of the map information, the road on which the host vehicle 100 and the other vehicle 200 travel is specified, and it is assumed that the host vehicle 100 and the other vehicle 200 continue to travel in the estimated traveling direction. When the vehicle intersects (connects) within the above-described threshold Dth from the estimated position, it may be determined that the other vehicle 200 is traveling toward the host vehicle 100.

  In addition, the notification object determination part 34 determines whether it is the object to notify, identifying the some other vehicle 200 based on the identification information contained in other vehicle information. Hereinafter, the distance D between the host vehicle 100 and the other vehicle 200 calculated by the relative position calculation unit 33 is referred to as “estimated distance D between the host vehicle 100 and the other vehicle 200”.

  The presence area determination unit 35 is based on the relative position of the other vehicle 200 calculated by the relative position calculation unit 33, and the direction in which the other vehicle 200 exists as viewed from the host vehicle 100 (hereinafter simply referred to as “the direction in which the other vehicle 200 exists”. Among the plurality of existing areas representing the target vehicle 200 is determined to be included in the existing area. A plurality of existing areas indicating directions viewed from the host vehicle 100 will be described with reference to FIG.

  FIG. 2 is a diagram illustrating an example of a plurality of existence areas representing directions in which the other vehicle 200 exists.

  In this example, 360-degree azimuths in the horizontal plane viewed from the host vehicle 100 are represented by eight existing areas (“front area”, “right front area”, “right area”, “right rear area”, “rear area”, “ Left rear area ”,“ left area ”, and“ left front area ”).

  The front area is set in a predetermined direction angle range (for example, an angle range of 45 ° centered on a direction angle corresponding to the front direction of the host vehicle 100) with the front direction of the host vehicle 100 as a reference.

  The right front area is a range of a predetermined direction angle (for example, a direction angle corresponding to the right front direction of the host vehicle 100) with reference to the right front direction of the host vehicle 100 (an oblique 45 ° direction between the front direction and the right direction). Is set at an angle range of 45 ° centered on.

  The right area is set in a predetermined direction angle range (for example, an angle range of 45 ° centered on a direction angle corresponding to the right direction of the host vehicle 100) with the right direction of the host vehicle 100 as a reference. .

  The right rear area corresponds to a range of a predetermined direction angle (for example, the right rear direction of the host vehicle 100) with reference to the right rear direction of the host vehicle 100 (an oblique 45 ° direction between the rear direction and the right direction). (An angle range of 45 ° centered on the direction angle).

  The rear area is set in a predetermined direction angle range (for example, an angle range of 45 ° centered on a direction angle corresponding to the rear direction of the host vehicle 100) with the rear direction of the host vehicle 100 as a reference.

  The left rear area corresponds to a range of a predetermined direction angle (for example, the left rear direction of the host vehicle 100) with reference to the rear left direction of the host vehicle 100 (an oblique 45 ° direction between the rear direction and the left direction). (An angle range of 45 ° centered on the direction angle).

  The left area is set in a predetermined direction angle range (for example, an angle range of 45 ° centered on a direction angle corresponding to the left direction of the host vehicle 100) with reference to the left direction of the host vehicle 100. .

  The left front area is a range of a predetermined direction angle (for example, a direction angle corresponding to the front left direction of the host vehicle 100) with reference to the front left direction of the host vehicle 100 (an oblique 45 ° direction between the front direction and the left direction). Is set at an angle range of 45 ° centered on.

  Based on the relative position of the other vehicle 200 calculated by the relative position calculation unit 33, the presence area determination unit 35 includes the direction in which the other vehicle 200 exists in any of the eight existence areas (which corresponds to which) ).

  The notification control unit 36 is configured to notify various types of existing areas (existing areas determined by the existing area determining unit 35) corresponding to the direction in which the other vehicle 200 to be notified to the driver of the host vehicle 100 exists. Execute control processing. The notification control unit 36 controls the display 40 and the speaker 50 that are communicably connected via an in-vehicle LAN, a direct line, or the like, and is determined by the direction in which the other vehicle 200 exists, that is, the presence area determination unit 35. The area is notified to the driver of the vehicle 100 and the like. Specifically, a signal (display image signal) corresponding to a display image for notifying the presence area corresponding to the direction in which the other vehicle 200 exists is generated and transmitted to the display 40, and the other vehicle 200 exists. An audio signal notifying the presence area corresponding to the direction is generated and transmitted to the speaker 50. Hereinafter, the presence area corresponding to the direction in which the other vehicle 200 exists is simply referred to as “the presence area of the other vehicle 200”.

  Note that when the presence area determined by the presence area determination unit 35 is a rear area, the notification control unit 36 does not notify the driver or the like of the presence area of the other vehicle 200 by the display 40 or the speaker 50. This is because the other vehicle 200 existing in the rear area is considered to be a subsequent vehicle of the host vehicle 100. More specifically, the driver of the host vehicle 100 can confirm the following vehicle in advance with a door mirror, a rearview mirror in the vehicle interior, etc., so bother the direction in which the other vehicle 200 as the following vehicle exists. This is because it is troublesome for the driver to notify.

  The display 40 displays the direction in which the other vehicle 200 exists (the presence area determined by the presence area determination unit 35) in accordance with the display image signal transmitted from the notification control unit 36. A display image displayed on the display 40 (display image for notifying the existence area of the other vehicle 200) will be described with reference to FIG.

  FIG. 3 is a diagram illustrating an example of a method of notifying the presence area of the other vehicle 200, and specifically shows an example of a form in which the presence area as a direction in which the other vehicle 200 exists is displayed on the display 40. The display 40 shown in this example displays all existing areas (“front area”, “right front area”, “right area”, “right rear area”, “left rear area”, “left area”). And the other vehicle 200 is approaching the host vehicle 100 from the direction corresponding to “the left front area”).

  As shown in FIG. 3, an icon VH indicating the host vehicle 100 is displayed at the center on the screen (display area) of the display 40. Then, around the icon VH displayed in the center portion of the display 40, icons indicating other vehicles 200 corresponding to the respective existing areas (the icon F corresponding to the front area, the icon FR corresponding to the right front area, the right area) A corresponding icon R, an icon RR corresponding to the right rear area, an icon RL corresponding to the left rear area, an icon L corresponding to the left area, and an icon FL corresponding to the left front area) are displayed.

  More specifically, the icon F corresponding to the front area is displayed in a region (upper center region) positioned on the icon VH corresponding to the host vehicle 100 on the screen of the display 40.

  Further, the icon FR corresponding to the right front area is displayed in a region (upper right region) located in the upper right direction of the icon VH corresponding to the host vehicle 100 on the screen of the display 40.

  In addition, the icon R corresponding to the right area is displayed in a region (right central region) positioned on the right side of the icon VH corresponding to the host vehicle 100 on the screen of the display 40.

  Further, the icon RR corresponding to the right rear area is displayed in a region (lower right region) located in the lower right direction of the icon VH corresponding to the host vehicle 100 on the screen of the display 40.

  Further, the icon RL corresponding to the left rear area is displayed in a region (lower left region) located in the lower left direction of the icon VH corresponding to the host vehicle 100 on the screen of the display 40.

  The icon L corresponding to the left area is displayed in a region (left central region) located on the left side of the icon VH corresponding to the host vehicle 100 on the screen of the display 40.

  Further, the icon FL corresponding to the left front area is displayed in a region (upper left region) located in the upper left direction of the icon VH corresponding to the host vehicle 100 on the screen of the display 40.

  In other words, the notification control unit 36 can display icons indicating vehicles in a plurality of areas on the screen of the display 40 corresponding to each existence area (direction viewed from the host vehicle 100).

  Note that, as described above, when the presence area of the other vehicle 200 is the rear area, the direction (existence area) in which the other vehicle 200 exists as the subsequent vehicle of the host vehicle 100 is not displayed, and thus the icon corresponding to the rear area is not displayed.

  As shown in FIG. 3, the background on the screen of the display 40 is set to black, and the icons of the existing areas corresponding to the direction in which the other vehicle 200 exists (in this example, the icons corresponding to all existing areas) are For example, white is displayed so that the contrast with the background (black) is high. Thereby, the driver of the own vehicle 100 can easily recognize the existence of the other vehicle 200 approaching the own vehicle 100. Hereinafter, the display mode of the icon of the presence area corresponding to the direction in which the other vehicle 200 exists is referred to as a “normal display mode”.

  Returning to FIG. 1, the speaker 50 outputs sound for notifying the direction in which the other vehicle 200 exists (existing area determined by the existing area determining unit 35) according to the audio signal transmitted from the notification control unit 36. .

  The various sensors 60 are detection means for detecting the motion state of the host vehicle 100, and include a known vehicle speed sensor, steering angle sensor, yaw rate sensor, direction sensor (which detects the head direction of the host vehicle 100), and the like. Various sensors 60 are communicably connected to the ECU 30 via an in-vehicle LAN or the like, and transmit detection signals (vehicle speed signal, steering angle signal, yaw rate signal, direction signal, etc.) to the ECU 30.

  The navigation device 70 is route guidance means for performing route guidance to a destination based on the position of the host vehicle 100, map information, traffic information (probe information, VICS (registered trademark)) received via communication means, and the like. is there. The navigation device 70 generates a map image (route guidance image) based on the position of the host vehicle 100 and the map information corresponding to the position of the host vehicle 100 transmitted from the GPS receiver 20, and displays in the vehicle interior. To display. The navigation device 70 stores map information including information about roads (road information) in an internal storage device. The navigation device 70 is communicably connected to the ECU 30 via an in-vehicle LAN or the like, and transmits map information (road information) or the like corresponding to the position of the host vehicle 100 to the ECU 30.

  Next, the information notification processing (processing for notifying the driver of the host vehicle 100 of the direction in which the other vehicle 200 exists in the vicinity of the host vehicle 100) by the information notification device 1 (ECU 30) according to the present embodiment is specifically described. I will explain it.

  FIG. 4 is a flowchart illustrating an example of information notification processing by the information notification device 1 (ECU 30) according to the present embodiment. The flowchart is executed at predetermined time intervals from, for example, ignition on (IG-ON) of the host vehicle 100 to ignition off (IG-OFF).

  In step S101, the other vehicle information acquisition unit 32 acquires other vehicle information (estimated position, estimated traveling direction, identification information, etc. of the other vehicle 200).

  In step S <b> 102, the host vehicle information acquisition unit 31 acquires host vehicle information (such as an estimated position of the host vehicle 100 and an estimated traveling direction).

  In step S <b> 103, the relative position calculation unit 33 calculates the relative position of the other vehicle 200 (the distance D between the host vehicle 100 and the other vehicle 200, the direction of the other vehicle 200 viewed from the host vehicle 100, etc.).

  In step S104, the notification target determination unit 34 determines whether there is another vehicle 200 to be notified. That is, the notification target determination unit 34 determines whether or not each other vehicle 200 that has acquired other vehicle information by inter-vehicle communication using the inter-vehicle communication radio device 10 is approaching the host vehicle 100. The notification target determination unit 34 proceeds to step S105 when each of the other vehicles 200 is approaching the host vehicle 100, and proceeds to step S107 when there is no other vehicle 200 approaching the host vehicle 100. move on.

  It should be noted that the case where there is no other vehicle 200 approaching the host vehicle 100 in step S104 includes the case where there is no other vehicle 200 itself in which inter-vehicle communication is established. In addition, although there is another vehicle 200 in which inter-vehicle communication is established, the inter-vehicle communication radio 10 cannot receive other vehicle information of the other vehicle 200 or there is no other vehicle information received from the other vehicle 200. The case where other vehicle information cannot be acquired by being complete is also included.

  In step S105, the presence area determination unit 35 determines the direction in which the other vehicle 200 exists based on the relative position of the other vehicle 200 calculated by the relative position calculation unit 33 (the estimated relative position of the other vehicle 200). Two existing areas ("front area", "right front area", "right area", "right rear area", "rear area", "left rear area", "left area", and "left front area" ) Is determined.

  In step S <b> 106, the notification control unit 36 notifies the presence area of the other vehicle 200 through the display 40 and the speaker 50, and at the same time, through the display 40, the other presence area (other than the direction in which the other vehicle 200 exists). Display (attention display) to call attention to the direction of (), and the current process is terminated.

  As described above, the notification control unit 36 does not notify the presence area of the other vehicle 200 when the presence area determined in step S105 is the “rear area”.

  On the other hand, in step S107, the notification control unit 36 clears the presence area of the other vehicle 200, and in step S108, performs a display (attention display) to call attention to the vicinity of the host vehicle 100. End the process.

  Next, using the specific examples shown in FIGS. 5 to 7, the alert display to other existing areas in step S <b> 106 of FIG. 4 will be described.

  FIG. 5 is a diagram illustrating an example of a screen display of the display 40 when another vehicle 200 to be notified exists. FIG. 5A shows a case where the other vehicle 200 is approaching the host vehicle 100 from one direction (right side) (when the area where the other vehicle 200 exists is a “right side area”). (B) is a case where the other vehicle 200 is approaching the host vehicle 100 from a plurality of directions (forward and right) (when the area where the other vehicle 200 exists is a “front area” and a “right area”). Represents.

  As shown in FIG. 5A, the icon R indicating the vehicle in the right central area on the screen of the display 40 corresponding to the direction (right area) where the other vehicle 200 exists is normally displayed as described above. Displayed in a manner. That is, the icon R corresponding to the direction in which the other vehicle 200 exists is displayed in white so that the contrast ratio with respect to the background (black) becomes high so that the driver of the own vehicle 100 can easily recognize the icon R. Also, icons F and R indicating the vehicles in the upper central area and the right central area on the screen of the display 40 corresponding to the direction (front area and right area) where the other vehicle 200 exists in FIG. It is the same.

  Further, as shown in FIGS. 5A and 5B, icons indicating vehicles corresponding to directions other than the direction in which the other vehicle 200 exists (icons F, FR, RR, RL, and L in FIG. 5A). , FL, and icons FR, RR, RL, L, and FL in FIG. 5B are also displayed in each area on the screen of the corresponding display 40. At this time, each icon corresponding to the direction other than the direction in which the other vehicle 200 exists is different from the normal display mode, that is, the icon corresponding to the direction in which the other vehicle 200 exists (the icon R in FIG. 5A). The icons F and R in FIG. 5B are displayed in a less conspicuous manner. In the present embodiment, icons corresponding to directions other than the direction in which the other vehicle 200 exists are displayed in a color that has a relatively low contrast ratio with the background (black), that is, in gray.

  As described above, in this embodiment, icons corresponding to directions other than the direction in which the other vehicle 200 exists are displayed in a manner different from the icons corresponding to the direction in which the other vehicle 200 exists. That is, an icon indicating a vehicle is displayed in a normal display form in an area corresponding to the direction in which the other vehicle 200 exists among the areas on the screen set corresponding to the direction viewed from the host vehicle 100, and other An icon indicating the vehicle is displayed in a region different from the normal display mode in a region other than the region corresponding to the direction in which the vehicle 200 exists. As a result, the driver of the host vehicle 100 can be reminded of the possibility that the vehicle exists in a direction other than the direction in which the other vehicle 200 exists. That is, the driver of the host vehicle 100 can be alerted in a direction other than the direction in which the other vehicle 200 exists.

  In addition, an icon corresponding to a direction other than the direction in which the other vehicle 200 exists is displayed in a manner that is less noticeable than the icon corresponding to the direction in which the other vehicle 200 exists. Thereby, it is possible to prompt the driver of the host vehicle 100 to pay attention to directions other than the direction in which the other vehicle 200 exists while reliably viewing the direction in which the other vehicle 200 exists.

  Next, FIG. 6 is a diagram illustrating another example of the screen display of the display 40 when the other vehicle 200 to be notified exists. 6A shows a case where the other vehicle 200 is approaching the host vehicle 100 from one direction (right side) (when the area where the other vehicle 200 exists is a “right side area”). (B) is a case where the other vehicle 200 is approaching the host vehicle 100 from a plurality of directions (forward and right) (when the area where the other vehicle 200 exists is a “front area” and a “right area”). Represents.

  As shown in FIG. 6A, the icon R indicating the vehicle in the right central region on the screen of the display 40 corresponding to the direction (right area) where the other vehicle 200 exists is normally displayed as described above. Displayed in a manner. That is, the icon R corresponding to the direction in which the other vehicle 200 exists is displayed in white so that the contrast ratio with respect to the background (black) becomes high so that the driver of the own vehicle 100 can easily recognize the icon R. Also, icons F and R indicating the vehicles in the upper central area and the right central area on the screen of the display 40 corresponding to the direction (front area and right area) where the other vehicle 200 exists in FIG. It is the same.

  Further, as shown in FIGS. 6A and 6B, as in the above-described embodiment, an icon indicating the other vehicle 200 corresponding to a direction other than the direction in which the other vehicle 200 exists (the icon of FIG. 6A). F, FR, RR, RL, L, FL and icons FR, RR, RL, L, FL in FIG. 6B are also displayed in each area on the screen of the corresponding display 40. At this time, each icon corresponding to the direction other than the direction in which the other vehicle 200 exists is different from the normal display mode, that is, the icon corresponding to the direction in which the other vehicle 200 exists (the icon R in FIG. 6A). The icons F and R in FIG. 6B are displayed in a manner that is less noticeable. In the present embodiment, icons corresponding to directions other than the direction in which the other vehicle 200 exists are displayed in a translucent manner (a mode in which the background appears to be transparent).

  As described above, in this embodiment, as in the above-described embodiment, an icon corresponding to a direction other than the direction in which the other vehicle 200 exists is different from an icon corresponding to the direction in which the other vehicle 200 exists (an aspect that is not easily noticeable). ). Thereby, the effect | action and effect similar to the Example mentioned above can be acquired.

  Next, FIG. 7 is a diagram illustrating still another example of the screen display of the display 40 when the other vehicle 200 to be notified exists. FIGS. 7A and 7B both show the case where the other vehicle 200 is approaching the host vehicle 100 from the right side (when the existence area of the other vehicle 200 is the “right side area”), and the display Reference numeral 40 denotes that the screen display of FIG. 7A and the screen display of FIG. 7B are repeated at a predetermined cycle.

  As shown in FIGS. 7A and 7B, the icon R indicating the vehicle in the right central region on the screen of the display 40 corresponding to the direction (right area) where the other vehicle 200 exists is always normal. Displayed in display mode. That is, the icon R corresponding to the direction in which the other vehicle 200 exists is always displayed in white so that the contrast ratio with respect to the background (black) is high so that the driver of the own vehicle 100 can easily see the icon R. .

  Further, as shown in FIGS. 7A and 7B, as in the above-described embodiment, icons (icons F, FR, RR, etc.) indicating the other vehicle 200 corresponding to directions other than the direction in which the other vehicle 200 exists. RL, L, FL) are also displayed in the respective areas on the screen of the corresponding display 40. At this time, each icon corresponding to a direction other than the direction in which the other vehicle 200 exists is different from the normal display mode, that is, in a mode that is less conspicuous than the icon (icon R) corresponding to the direction in which the other vehicle 200 exists. Is displayed. In the present embodiment, the icon corresponding to the direction other than the direction in which the other vehicle 200 exists repeats the display state shown in FIG. 7A and the non-display state shown in FIG. 7B (flashing mode). Is displayed. It should be noted that the cycle of repeating the screen display of FIG. 7A and the screen display of FIG. 7B (the predetermined cycle described above) warps and stands out when the driver of the host vehicle 100 feels bothersome. It is set appropriately so that there is no.

  As described above, in this embodiment, as in the above-described embodiment, an icon corresponding to a direction other than the direction in which the other vehicle 200 exists is different from an icon corresponding to the direction in which the other vehicle 200 exists (an aspect that is not easily noticeable). ). Thereby, the effect | action and effect similar to the Example mentioned above can be acquired.

  In the present embodiment, as shown in FIG. 7A, icons corresponding to directions other than the direction in which the other vehicle 200 exists are displayed in the same color as the icons corresponding to the direction in which the other vehicle 200 exists. However, as in the above-described embodiment, the contrast ratio with the background may be lowered or the background may be transmitted.

  Next, the alert display on the periphery of the host vehicle 100 in step S108 of FIG. 4 will be described using a specific example shown in FIG.

  FIG. 8 is a diagram illustrating a specific example of the display screen of the display 40 when there is no other vehicle 200 to be notified. Fig.8 (a) shows an example of the display screen of the display 40 in case the other vehicle 200 of notification object does not exist, FIG.8 (b) shows another example.

  Referring to FIG. 8A, an icon VH representing the host vehicle 100 is displayed at the center of the display 40 on the screen. Further, all the icons indicating the vehicles in the respective areas on the screen of the display 40 corresponding to the direction seen from the host vehicle 100 correspond to directions other than the direction in which the other vehicle 200 exists in the embodiment shown in FIG. Displayed in a display mode (display mode different from the normal display mode). That is, all icons indicating the vehicles in the respective regions on the screen of the display 40 corresponding to the direction viewed from the host vehicle 100 are displayed in a color with a relatively low contrast ratio with the background, that is, in gray.

  In addition, the display mode of all the icons indicating the vehicles in each area on the screen of the display 40 corresponding to the direction viewed from the host vehicle 100 is other than the direction in which the other vehicle 200 exists in the embodiment shown in FIGS. An icon display mode corresponding to the direction may be used.

  As described above, in this embodiment, even when there is no other vehicle 200 to be notified, an icon indicating a vehicle in each area corresponding to the direction viewed from the own vehicle 100 is displayed in the direction in which the other vehicle 200 exists. Is displayed in a mode different from the icon for indicating (a mode that is not easily noticeable). As a result, the driver of the host vehicle 100 can be reminded of the possibility that the vehicle exists around the host vehicle 100 (each direction viewed from the host vehicle 100). That is, the driver of the host vehicle 100 can be alerted to the vicinity of the host vehicle 100.

  In addition, referring to FIG. 8B, an icon VH representing the host vehicle 100 is displayed at the center of the display 40 on the screen. In addition, each icon indicating the vehicle in each area on the screen of the display 40 corresponding to the direction viewed from the host vehicle 100 is not displayed, but instead a sentence (“ Please confirm safety ") is displayed at the top of the icon VH.

  As described above, in this embodiment, when there is no other vehicle 200 to be notified, the text that prompts the user to confirm the vicinity of the host vehicle 100 is displayed. Thereby, it is possible to prompt the driver of the host vehicle 100 to pay attention to the vicinity of the host vehicle 100.

  Further, in the present embodiment, each icon indicating the vehicle in each region on the screen of the display 40 corresponding to the direction viewed from the host vehicle 100 is not displayed. Therefore, for example, when there is no other vehicle 200 around the host vehicle 100, the driver can be prevented from misunderstanding that the other vehicle 200 exists around the host vehicle 100. That is, the driver can be alerted to the surroundings of the host vehicle 100 without misunderstanding that the other vehicle 200 exists. Therefore, for example, it is possible to suppress the occurrence of a situation in which the driver cannot pay attention to the other vehicle 200 that does not exist due to misunderstanding and cannot travel easily and hinder traffic flow.

  Note that the display screens shown in the embodiments of FIGS. 8A and 8B may be displayed on the display 40 even when the area where the other vehicle 200 to be notified is the “rear area”.

  As mentioned above, although the form for implementing this invention was explained in full detail, this invention is not limited to this specific embodiment, In the range of the summary of this invention described in the claim, various Can be modified or changed.

1 Information notification device (display device)
10 Inter-Vehicle Communication Radio 20 GPS Receiver 30 ECU
31 Self-vehicle information acquisition unit 32 Other vehicle information acquisition unit 33 Relative position calculation unit 34 Notification target determination unit 35 Presence area determination unit 36 Notification control unit 40 Display (display unit)
50 Speaker 60 Various sensors 70 Navigation device 100 Own vehicle 200 Other vehicle

Claims (3)

A host vehicle information acquisition unit that acquires host vehicle information including the position and traveling direction of the host vehicle;
Other vehicle information acquisition unit for acquiring other vehicle information including the position and traveling direction of the other vehicle by inter-vehicle communication with another vehicle;
Based on the own vehicle information and the other vehicle information, a relative position of the other vehicle with respect to the own vehicle including a distance between the own vehicle and the other vehicle and a direction in which the other vehicle exists as seen from the own vehicle. A relative position calculation unit for calculating;
A display unit configured to be able to display an icon indicating a vehicle in each of a plurality of predetermined areas on a screen set corresponding to a direction seen from the own vehicle;
The display unit
When the distance is less than or equal to a predetermined first threshold and the other vehicle is moving toward the host vehicle, the predetermined area corresponding to the existing direction is selected from the plurality of predetermined areas. An icon is displayed, and the icon is displayed in a predetermined area other than the predetermined area corresponding to the existing direction in a mode different from the icon displayed in the predetermined area corresponding to the existing direction. ,
Display device. The display unit
When the distance is not less than or equal to the predetermined first threshold, when the other vehicle is not moving toward the host vehicle, or when the other vehicle information acquisition unit has not acquired the other vehicle information, The icon is not displayed on the screen,
The display device according to claim 1. The display unit
When the distance is not less than or equal to the predetermined first threshold, when the other vehicle is not moving toward the host vehicle, or when the other vehicle information acquisition unit has not acquired the other vehicle information, A sentence that prompts the user to confirm the periphery of the vehicle is displayed on the screen.
The display device according to claim 2.