WO2023145856A1 - Système d'affichage - Google Patents

Système d'affichage Download PDF

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Publication number
WO2023145856A1
WO2023145856A1 PCT/JP2023/002575 JP2023002575W WO2023145856A1 WO 2023145856 A1 WO2023145856 A1 WO 2023145856A1 JP 2023002575 W JP2023002575 W JP 2023002575W WO 2023145856 A1 WO2023145856 A1 WO 2023145856A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
image
display area
control unit
condition
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Application number
PCT/JP2023/002575
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English (en)
Japanese (ja)
Inventor
誠 秦
祐介 佐原
勇希 舛屋
翠 渡辺
華子 本間
Original Assignee
日本精機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 日本精機株式会社 filed Critical 日本精機株式会社
Publication of WO2023145856A1 publication Critical patent/WO2023145856A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators

Definitions

  • the present disclosure relates to a display system for a vehicle or the like having a plurality of displays.
  • the present disclosure has been made in consideration of such circumstances, and aims to provide a display system with excellent information transferability.
  • the display system of the present disclosure provides a first display that displays an image in a first display area so as to be visually recognized at a position at a first display distance from the line of sight of the driver of the vehicle. and a second display for displaying an image in a second display area different from the first display area so as to be viewed at a second display distance greater than the first display distance with respect to the line of sight of the driver.
  • a warning image is displayed in the second display area, and after the first condition is met, the second condition is a situation in which the degree of warning is higher than the first condition, Recognition level increasing processing for moving and displaying the warning image in the first display area, or when the second condition is satisfied, the warning image is displayed in the first display area, and after the second condition is satisfied, the warning image is displayed. and a display control unit that, when a first condition is satisfied, executes recognition reduction processing for moving and displaying the warning image in the second display area.
  • the display system of the present disclosure is excellent in information transmission.
  • FIG. 1 is a diagram showing a system configuration example of a display system according to the embodiment;
  • 4 is a flowchart for explaining recognition level increasing processing executed by a main control unit;
  • 4 is a flowchart for explaining recognition level lowering processing executed by a main control unit;
  • Explanatory drawing which shows the example of a display before execution of a recognition-recognition-lowering process as a 1st specific example.
  • FIG. 11 is an explanatory diagram showing a display example of a warning image in step S12 of the recognition level lowering process as a first specific example;
  • FIG. 11 is an explanatory diagram showing another display example of the warning image in step S12 of the recognition level lowering process as the first specific example;
  • FIG. 11 is an explanatory diagram showing a display example of a warning image in step S14 of the recognition level lowering process as a first specific example;
  • FIG. 11 is an explanatory diagram showing a display example of a warning image in step S4 of the recognition level increasing process as a first specific example;
  • FIG. 11 is an explanatory diagram showing a display example of a warning image in step S2 of the recognition level increasing process as a second specific example;
  • FIG. 11 is an explanatory diagram showing another display example of the warning image in step S2 of the recognition level increasing process as a second specific example;
  • FIG. 11 is an explanatory diagram showing a display example of a warning image in step S4 of the recognition level increasing process as a second specific example;
  • FIG. 12 is an explanatory diagram showing a display example of a warning image in step S4 of the recognition level increasing process as a third specific example
  • FIG. 11 is an explanatory diagram showing a display example of a warning image in step S4 of the recognition level increasing process as a fourth specific example
  • FIG. 11 is an explanatory diagram showing a display example of a warning image in step S2 of the recognition level increasing process as a fifth specific example
  • FIG. 11 is an explanatory diagram showing a display example of a warning image in step S2 of the recognition level increasing process as a fifth specific example
  • FIG. 11 is an explanatory diagram showing a display example of a warning image in step S4 of the recognition level increasing process as a fifth specific example
  • the display system of the present disclosure can be applied to, for example, display systems mounted on vehicles such as automobiles and motorcycles, ships, agricultural machinery, and construction machinery.
  • the display system of the present disclosure is mounted on a vehicle and has two head-up displays (HUD, Head Up Display) that display required information based on various information acquired from the vehicle. will be used for explanation.
  • HUD Head Up Display
  • FIG. 1 is a diagram showing a system configuration example of a display system 10 according to this embodiment.
  • FIG. 2 is a diagram showing an example of display by two indicators.
  • the display system 10 is mounted in the instrument panel 2 of the vehicle 1 (own vehicle).
  • the display system 10 has an upper HUD 20 , a lower HUD 30 and a main controller 40 .
  • the upper HUD 20 (first display) is arranged in front of the steering wheel 5 and irradiates the windshield 3 with display light L1.
  • the reflected display light L ⁇ b>1 is reflected by the windshield 3 toward the driver 4 , thereby allowing the driver 4 to view the virtual image V ⁇ b>1 in front of the vehicle 1 .
  • the image displayed by the upper HUD 20 is displayed, for example, in the virtual upper HUD display area 8 (first display area) in FIG. 2, and is superimposed on the front scenery such as the road surface and visually recognized.
  • the lower HUD 30 (second display) is arranged further forward (in the direction away from the driver 4) than the upper HUD 20, and irradiates the light shielding portion 3a formed around the windshield 3 with the display light L2.
  • the light shielding portion 3a is a portion made of black ceramic or the like and made of a light shielding color such as black.
  • the light shielding portion 3a is formed for the purpose of preventing the adhesive for fixing the windshield 3 to the vehicle 1 from deteriorating due to sunlight, concealing the adhesive, improving the design, and the like.
  • the reflected display light L2 is reflected toward the driver 4 by the light blocking portion 3a, thereby allowing the driver 4 to visually recognize the virtual image V2 in front of the vehicle 1.
  • the image displayed by the lower HUD 30 is displayed, for example, in a virtual lower HUD display area 9 (second display area) different from the upper HUD display area 8 in FIG. be.
  • the upper HUD 20 displays the image so that the virtual image V1 can be viewed at a distance d1 (first display distance) in the vertical direction with respect to the line of sight 4a that is assumed during normal operation (driving) of the driver 4. indicate.
  • the lower HUD 30 displays an image such that the virtual image V2 can be viewed at a distance d2 (second display distance) that is longer than the distance d1 with respect to the line of sight 4a of the driver 4 . That is, the moving distance for shifting the line of sight 4a to the image related to the display light L2 is longer for the driver 4 than the moving distance for shifting the line of sight 4a to the image related to the display light L1.
  • the angle ⁇ 2 formed by the direction of the line of sight 4a and the direction of the line of sight for viewing the image of the virtual image V2 is greater than the angle ⁇ 1 formed by the direction of the line of sight 4a and the direction of the line of sight for viewing the image of the virtual image V1. is larger. Therefore, the driver 4 views the image displayed by the lower HUD 30 at a position farther from the line of sight 4 a than the image displayed by the upper HUD 20 and below the image displayed by the upper HUD 20 .
  • the upper HUD 20 forms a virtual image V1 in front of the virtual image V2 formed by the lower HUD 30. That is, the image based on the virtual image V1 is viewed at a position far from the driver 4 in the front-rear direction, and the image based on the virtual image V2 is viewed at a position close to the driver 4 in the front-rear direction.
  • the display surfaces of the upper HUD display area 8 and the lower HUD display area 9 are surfaces having four sides, upper, lower, left, and right. .
  • Left sides 8c and 9c and right sides 8d and 9d are surfaces set at arbitrary angles with respect to the vertical direction.
  • the left sides 8c and 9c and the right sides 8d and 9d of the display surface are surfaces along the vertical direction (surfaces perpendicular to the road surface) and inclined surfaces inclined at a predetermined angle with respect to the vertical direction (surfaces inclined with respect to the road surface). , or formed to be a surface along the front-rear direction (a surface superimposed (substantially parallel) to the road surface).
  • the display surface may be a surface in which the left sides 8c and 9c and the right sides 8d and 9d are curved such that the side closer to the viewer is along the vertical direction and the farther side is along the front-back direction.
  • a display surface formed on a surface other than a surface perpendicular to the road surface can display an image that expresses a sense of depth by varying the display distance between the driver 4 and the virtual image according to the display position on the display surface.
  • the display surface is a surface that is inclined such that the left sides 8c and 9c and the right sides 8d and 9d are positioned forward of the upper sides 8b and 9b with respect to the lower sides 8a and 9a, the driver 4 will not be able to see the depth of the display surface.
  • Information on the line of sight 4a (viewpoint) of the driver 4 for calculating the display distance of the image may be set in advance and held by the main control unit 40 or the like, or may be stored by the vehicle 1 or the display system 10. If a sensor for detecting the viewpoint of the person 4 is provided, the sensor may be used for detection.
  • the upper HUD 20 has a display 21 , a concave mirror 22 , a housing 24 and an upper HUD display control section 25 .
  • the display 21 emits the display light L1 toward the concave mirror 22 .
  • the display 21 is, for example, a TFT (Thin Film Transistor) type liquid crystal display or an organic EL (Electroluminescence) display.
  • the display device 21 may have a projector and a screen forming a display surface.
  • the concave mirror 22 reflects the display light L1 emitted by the display 21 toward the windshield 3 .
  • the concave mirror 22 has a function as a magnifying glass, magnifies the image displayed on the display 21 , and reflects the image toward the windshield 3 . That is, the driver 4 visually recognizes an enlarged image of the image displayed on the display 21 .
  • the housing 24 supports the control board on which the concave mirror 22, the display 21, and the upper HUD display control section 25 are mounted inside the housing 24.
  • the upper HUD display control unit 25 has a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), etc., and executes predetermined arithmetic processing according to a program written in the ROM. Specifically, the upper HUD display control section 25 controls the display device 21 to display a desired image based on an instruction from the main control section 40 .
  • CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the lower HUD 30 has a display 31 , a housing 34 and a lower HUD display control section 35 .
  • the display 31 directly emits the display light L2 to the light shielding portion 3a outside the housing 34.
  • the display 31 has the same configuration as the upper HUD 20, for example. Thereby, the driver 4 visually recognizes the image displayed on the display 31 and reflected by the light blocking portion 3a.
  • the housing 34 supports a control board on which the display 31 and the lower HUD display control section 35 are mounted inside the housing 34 .
  • the lower HUD display control unit 35 has a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), etc., and executes predetermined arithmetic processing according to a program written in the ROM. Specifically, the lower HUD display control section 35 controls the display device 31 to display a desired image based on an instruction from the main control section 40 .
  • CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the main control unit 40 particularly controls the upper HUD 20 and the lower HUD 30 based on information obtained from each unit of the vehicle 1, which will be described later.
  • the main control unit 40 has a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), etc., and performs predetermined arithmetic processing and display control processing described later according to the program written in the ROM. to run.
  • CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the vehicle 1 has a peripheral information acquisition section 51, an outside information acquisition section 52, a car navigation system 53, and a vehicle ECU (Electronic Control Unit) 54.
  • a vehicle ECU Electronic Control Unit
  • Each unit and the main control unit 40 are connected via a CAN (Controller Area Network) bus 50, for example.
  • CAN Controller Area Network
  • the surrounding information acquisition unit 51 acquires information on the surroundings (outside) of the vehicle 1 .
  • the peripheral information acquisition unit 51 performs communication between the vehicle 1 and a wireless network, communication between the vehicle 1 and other vehicles, communication between the vehicle 1 and pedestrians, and communication between the vehicle 1 and roadside infrastructure.
  • the peripheral information acquisition unit 51 communicates with a communication module that can directly access a WAN (Wide Area Network), an external device (such as a mobile router) that can access the WAN, or an access point of a public wireless LAN (Local Area Network). Equipped with a communication module, etc., for Internet communication.
  • the peripheral information acquisition unit 51 has a wireless communication module conforming to a predetermined wireless communication standard.
  • the peripheral information acquisition unit 51 has a communication device that wirelessly communicates with the roadside infrastructure, for example, from a base station of a driving safety support system (DSSS), a roadside radio installed as infrastructure Obtain object information and traffic information through the device.
  • DSSS driving safety support system
  • the vehicle exterior information acquisition unit 52 detects the contents and positions of objects such as people, structures, and other vehicles 1 that exist in the external environment around the vehicle 1 on the top, bottom, front, rear, left, and right of the vehicle 1 .
  • the outside information acquisition unit 52 includes, for example, a stereo camera that captures the scenery around the vehicle 1, a range sensor such as LIDAR (Laser Imaging Detection And Ranging) that measures the distance from the vehicle 1 to an object, These include sonar, ultrasonic sensors, millimeter-wave radars, etc. that detect objects located.
  • LIDAR Laser Imaging Detection And Ranging
  • the car navigation system 53 has a GPS controller that calculates the position of the vehicle 1 based on GPS (Global Positioning System) signals received from satellites or the like.
  • the car navigation system 53 has a storage unit for storing map data, reads out the map data near the current position from the storage unit based on the position information from the GPS controller, and uses the guidance route to the destination set by the user. to decide.
  • the car navigation system 53 outputs information about the current position of the vehicle 1 and the determined guide route to the main control unit 40 .
  • the car navigation system 53 outputs information indicating the names and types of facilities in front of the vehicle 1 and the distance between the facilities and the vehicle 1 to the main control unit 40 by referring to the map data.
  • Map data includes road shape information (lanes, road width, number of lanes, intersections, curves, forks, etc.), traffic information on road signs such as speed limits, traffic restrictions such as road closures, alternating one-way traffic, and speed restrictions, Various types of information such as information about each lane when there are multiple lanes are associated with position data.
  • the car navigation system 53 outputs these various types of information to the main control section 40 .
  • the car navigation system 53 is not limited to one mounted on the vehicle 1, and is a portable terminal having a car navigation function (for example, a smart phone, a tablet PC (Personal Computer)).
  • the vehicle ECU 54 acquires vehicle information necessary for driving the vehicle 1, such as vehicle speed and engine speed, from various sensors provided in the vehicle 1, and controls the operation of the vehicle 1.
  • the vehicle ECU 54 outputs necessary vehicle information such as vehicle speed and warning information of the vehicle 1 itself (for example, low fuel, abnormal engine oil pressure) to the main control unit 40 .
  • the display system 10 executes the recognition level increasing process or the recognition level decreasing process when a predetermined condition is satisfied.
  • FIG. 3 is a flowchart for explaining the awareness raising process executed by the main control unit 40.
  • FIG. FIG. 4 is a flowchart for explaining the recognition level lowering process executed by the main control unit 40.
  • the awareness raising process displays a warning image in the lower HUD display area 9 (step S2), and after the first condition is satisfied, the warning degree is higher than the first condition.
  • the second condition of the high situation is satisfied (YES in step S3), the warning image is moved and displayed in the upper HUD display area 8 (step S4).
  • step S11 If the second condition is satisfied (YES in step S11), the recognition level lowering process displays a warning image in the upper HUD display area 8 (step S12), and if the first condition is satisfied after the second condition is satisfied (step YES in S13), the warning image is moved and displayed in the lower HUD display area 9 (step S14).
  • the display system 10 in this embodiment displays an image at a position (near position) where the amount of movement of the line of sight from the line of sight 4a of the driver 4 is small, and the image is easily recognized by the driver 4. It has a lower HUD 30 that displays an image at a position (distant position) where the amount of movement of the line of sight from the line of sight 4a is large and is relatively difficult for the driver 4 to perceive.
  • the display system 10 allows the upper HUD 20 and the lower HUD 30 to work together to display information on the upper HUD 20, which is easily recognizable, in situations where the degree of warning is high, and appropriately convey information to the driver 4.
  • the recognition level increasing process or recognition level decreasing process of FIGS. 3 and 4 will be described below using first to fourth specific examples.
  • a first specific example is recognition reduction processing that is executed when warning images (marker images 87 and 97 in FIGS. 5 to 9) indicating traffic information in which the upper HUD 20 and the lower HUD 30 are positioned ahead are displayed.
  • warning images marker images 87 and 97 in FIGS. 5 to 9
  • the traffic information is a road sign indicating a speed limit will be described below.
  • FIG. 5 is an explanatory diagram showing a display example before execution of recognition lowering processing as a first specific example.
  • a lane marking image 94 showing information about the lane marking of the lane in which the vehicle 1 travels is displayed.
  • the image related to the information about the surrounding vehicles is information including, for example, a rear vehicle image 95 related to information related to a vehicle behind the vehicle 1 and a front vehicle image 96 related to information related to a front vehicle running in front of the vehicle 1.
  • a vehicle image 91 and a relative positional relationship are shown.
  • a rear vehicle image 95 and a front vehicle image 96 are displayed when there is a rear vehicle and a front vehicle.
  • a sign image 97 relating to information on road signs applied to the vehicle 1 currently running is displayed at a required timing.
  • the content of the road sign may be a regulatory sign indicating prohibited items such as overtaking prohibited, or information on other road signs.
  • a plurality of sign images 97 may be displayed in the lower HUD display area 9.
  • the sign image 97 related to the speed limit, which is of high importance is on the center side of the lower HUD display area 9, and the driver 4 It is preferable to display it in an area where it is easy for people to recognize it. At this time, no image is displayed in the upper HUD display area 8 because there is no information that encourages recognition.
  • the main control unit 40 detects, as a second condition, the surrounding information acquisition unit 51 or the vehicle exterior information acquisition unit 52 detecting traffic information related to road signs and traffic control information located in front of the vehicle 1, or the car navigation system 53 obtains traffic information relating to road signs and traffic regulation information located in front of the vehicle 1 (step S11 in FIG. 4).
  • the main control unit 40 waits until the second condition is satisfied.
  • the main control section 40 controls the upper HUD display control section 25 to display the sign image 87 as a warning image in the upper HUD display area 8 (step S11).
  • FIG. 6 is an explanatory diagram showing a display example of a warning image in step S12 of the recognition level lowering process as a first specific example.
  • the upper HUD display control unit 25 starts displaying the marker image 87 near the upper side 8b of the upper HUD display area 8.
  • the upper HUD display control unit 25 preferably displays the sign image 87 in a color and shape that imitates a regulatory sign regarding speed limits.
  • the upper HUD display control unit 25 moves the sign image 87 within the upper HUD display area 8 so that the sign image 87 approaches the lower HUD display area 9 as the vehicle 1 approaches the road sign as the vehicle 1 travels. Thereby, the upper HUD display control unit 25 makes the driver 4 recognize that the road sign to be applied from now on is approaching the vehicle 1 .
  • the upper HUD display control unit 25 changes the speed limit (100 km/h) associated with the sign image 97 displayed in the lower HUD display area 9 to the speed limit (80 km/h) associated with the sign image 87. make them aware that they will be
  • the upper HUD display control unit 25 moves the sign image 97 to the vicinity of the lower side 8a of the upper HUD display area 8 at the timing when the speed limit is applied, that is, by the time the vehicle 1 passes the road sign.
  • FIG. 7 is an explanatory diagram showing another display example of the warning image in step S12 of the recognition level lowering process as the first specific example.
  • the upper HUD display control unit 25 may be linearly moved diagonally downward from the center in the horizontal direction toward the position where the indicator image 97 in the lower HUD display area 9 is displayed.
  • the upper HUD display control unit 25 moves the marker image 87 from the upper HUD display area 8 to the lower HUD display area 9 by moving the marker image 87 toward the marker image 97 in the lower HUD display area 9 in this manner. It is possible to improve the sense of interlocking between the displays of the upper HUD 20 and the lower HUD 30 at the time.
  • the upper HUD display control unit 25 moves the sign image 87 from the upper side 8b side to the lower side 8a side while increasing the visibility of the sign image 87 in order to further recognize that the road sign is approaching.
  • the upper HUD display control unit 25 moves while changing various elements such as chromaticity, saturation, brightness, luminance, transparency, and the size of the sign image 87, thereby increasing visibility and improving road visibility. It is preferable to make the sign aware that it is approaching.
  • the upper HUD display control unit 25 blinks the sign image 87 to indicate that a road sign is approaching, and moves while increasing the blinking speed, or moves from the upper side 8b side to the lower side 8a side. Recognition may also be achieved by gradually increasing the movement speed.
  • the main control unit 40 determines whether or not the first condition that the distance between the road sign and the vehicle 1 is less than or equal to a predetermined distance is satisfied (step S13 in FIG. 4).
  • the predetermined distance is a distance smaller than the distance between the road sign and the vehicle 1 when the road sign is detected. That is, the main control unit 40 determines that the road sign image 87 displayed in the upper HUD display area 8 is sufficiently recognized by the driver 4 and the degree of warning is lower than when the second condition is satisfied. It is determined whether or not the timing for applying the speed limit, which is the content, has come (the timing is approaching).
  • the main control unit 40 determines that the first condition is not satisfied (NO in step S13), the display of the marker image 87 in the upper HUD display area 8 is maintained.
  • FIG. 8 is an explanatory diagram showing a display example of a warning image in step S14 of the recognition level lowering process as a first specific example.
  • the lower HUD display control unit 35 replaces the currently displayed marker image 97 with an image similar to the marker image 87 displayed in the upper HUD display area 8 and displays it. At this time, the lower HUD display control unit 35 may, for example, perform an effect as if the character had fallen downward from the upper HUD display area 8 . Further, the lower HUD display control unit 35 may interlock and replace the old and new marker images 97 so that the marker images 97 that have already been displayed are rotated together and replaced. Further, the lower HUD display control unit 35 may perform an effect such as lighting the marker image 97 at the timing of the replacement so that the driver 4 can recognize that the marker image 97 has been replaced.
  • the main control unit 40 can make it appear as if the marker image 87 displayed in the upper HUD display area 8 has moved to the lower HUD display area 9 . That is, the main control unit 40 displays the sign image 87 in the upper HUD display area 8 to warn the driver 4 in order to increase the visibility of the road sign to be applied from now on. Further, after the road sign is recognized by the driver 4 and the road sign is actually applied, the main control unit 40 displays the sign image 97 in the lower HUD display area 9 to reduce recognition. That is, the main control unit 40 notifies the driver 4 in the lower HUD display area 9 without reducing forward visibility. As a result, the display system 10 can effectively utilize the upper HUD 20 and the lower HUD 30 and appropriately transmit necessary information to the driver 4 .
  • the road signs relating to speed limits have been described as examples of the sign images 87 and 97, a plurality of types of road signs are displayed as the sign images 87 and 97 in the upper HUD display area 8 and the lower HUD display area 9. good too.
  • the lower HUD display area 9 displays a sign image 97 regarding a speed limit and a sign image regarding prohibition of overtaking.
  • the upper HUD display control unit 25 may display a plurality of sign images positioned ahead in the upper HUD display area 8 (step S12). When moving each marker image, the upper HUD display control unit 25 moves obliquely downward toward each marker image of the corresponding same type in the lower HUD display area 9 to give a sense of depth, thereby visually can improve effectiveness.
  • the main control unit 40 causes the driver 4 to display the sign image.
  • the marker image 87 in the upper HUD display area 8 may be extinguished assuming that 87 is recognized.
  • the upper HUD display control unit 25 displays the sign image 87 is turned off.
  • the upper HUD display control unit 25 may display the current vehicle speed together with the sign image 87 to notify that the vehicle speed is within the speed limit related to the sign image 87.
  • the upper HUD display control unit 25 makes the marker image 87 glow, bold, blink, rotate, jump, etc., when turning off the marker image 87 . By performing such an effect, it is possible to further notify that the vehicle is within the speed limit.
  • the turned off marker image 87 is then displayed as a marker image 97 in the lower HUD display area 9 .
  • the main control unit 40 may execute the awareness raising process.
  • the main control unit 40 displays the sign image 97 currently applied to the vehicle 1 in the lower HUD display area 9 (YES in step S1 of FIG. 3, step S2).
  • the main control unit 40 determines whether or not the second condition that the vehicle 1 deviates from the current speed limit displayed in the sign image 97 is satisfied (step S3 in FIG. 3). For example, the main control unit 40 determines whether or not the speed limit is exceeded or the set speed of the adaptive cruise control exceeds the speed limit.
  • the main control unit 40 determines that the second condition is satisfied (YES in step S3), it controls the upper HUD display control unit 25 so that the marker image 97 displayed in the lower HUD display area 9 is displayed in the upper HUD display area. It is moved to the display area 8 and displayed as the marker image 87 (step S4).
  • FIG. 9 is an explanatory diagram showing a display example of a warning image in step S4 of the recognition level increasing process as a first specific example.
  • the lower HUD display control section 35 maintains the display of the marker image 97 displayed in the lower HUD display area 9 .
  • the display system 10 can improve the recognition of the warning and appropriately convey it to the driver 4 .
  • a second specific example is a warning image (see Figure 10 to 12 rearward approaching vehicle images 88, 98) are executed to increase recognition.
  • the main control unit 40 determines whether or not the first condition that the peripheral information acquisition unit 51 or the vehicle exterior information acquisition unit 52 has detected an approaching vehicle behind is satisfied (step S1 in FIG. 3). For example, when the distance between the vehicle 1 and the vehicle behind (inter-vehicle distance) is less than or equal to the first distance, or when the approach speed of the vehicle behind is greater than a predetermined value, the first condition may be satisfied.
  • the first distance is, for example, a distance at which it is predicted that a vehicle behind is approaching and will pass the vehicle 1 and that the driver 4 should be notified of the fact, and is an arbitrarily determined distance.
  • the main control unit 40 waits until the first condition is satisfied.
  • FIG. 10 is an explanatory diagram showing a display example of a warning image in step S2 of the recognition level increasing process as a second specific example.
  • a rear vehicle is traveling on the left rear side.
  • the lower HUD display control unit 35 displays a rear approaching vehicle image 98 in the left area of the lower HUD display area 9 .
  • the lower HUD display control unit 35 makes the upper, lower, left, and right sides of the lower HUD display area 9 correspond to the front, rear, left, and right of the vehicle 1 , and displays the rearward direction so that the positional relationship between the vehicle behind and the vehicle 1 can be easily recognized.
  • An approaching vehicle image 98 is displayed. That is, the lower HUD display control unit 35 starts displaying the rear approaching vehicle image 98 from the lower left of the lower HUD display area 9 .
  • the lower HUD display control unit 35 displays the vehicle image 98 approaching from behind as an image using a gradation that has a reference point at the center of the image and becomes lighter as the distance from the reference point increases.
  • the lower HUD display control unit 35 displays the vehicle image 98 approaching from behind in front of the layer such as the vehicle speed image 92 that is always displayed in the lower HUD display area 9 , so that the vehicle image 98 approaching from behind is displayed to the driver 4 . It is preferable to make it easier for
  • the main control unit 40 determines whether or not the following condition is satisfied: the distance between the vehicle 1 and the rear vehicle is equal to or less than the second distance, the rear vehicle is closer than the first condition, and the degree of warning is high. judge.
  • the second distance is a distance smaller than the first distance used to determine the first condition.
  • FIG. 11 is an explanatory diagram showing another display example of the warning image in step S2 of the awareness raising process as the second specific example.
  • the lower HUD display control unit 35 moves the rear approaching vehicle image 98 in accordance with the direction of the relative speed of the rear vehicle. Specifically, the lower HUD display control unit 35 gradually moves the rear approaching vehicle image 98 upward and to the right, thereby making it possible to perceive that the rear vehicle is traveling forward from the rear toward the vehicle 1 . In addition, the lower HUD display control unit 35 moves the vehicle image 98 approaching from behind toward the lower left end of the upper HUD display area 8 so that the vehicle image 98 approaching from behind is moved from the lower HUD display area 9 to the upper HUD display area 8 later. To improve the feeling of interlocking display of an upper HUD 20 and a lower HUD 30 when moving. Further, from the viewpoint of visibility, the lower HUD display control unit 35 switches the rear approaching vehicle image 98 from being displayed in front of the layers such as the vehicle speed image 92 to being displayed in the back.
  • the lower HUD display control unit 35 moves the rear approaching vehicle image 98, it is preferable to appropriately change the representation of the rear approaching vehicle image 98 in order to convey the state of the rear vehicle.
  • the lower HUD display control unit 35 may change the isotropy of the rear approaching vehicle image 98 and display it so as to extend in the movement direction in order to produce that the rear vehicle is moving.
  • the lower HUD display control unit 35 can change the area of the vehicle image 98 approaching from behind or the moving speed of the vehicle image 98 approaching from behind in accordance with the relative speed and distance to the vehicle behind. good.
  • the lower HUD display control unit 35 reduces or rightwards the vehicle speed image 92 or the like that is always displayed in order to enhance the visibility of the vehicle image 98 approaching from behind, and displays the vehicle image 98 that is approaching from behind.
  • a space may be formed.
  • the upper HUD display control unit 25 may display an image of a vehicle approaching from behind in the upper HUD display area 8 as an advance notice of a warning image to be displayed under the second condition along with text, sound, and the like. good.
  • the main control unit 40 sets the second condition, for example, that the inter-vehicle distance is equal to or less than the third distance, or that the vehicle behind the vehicle is approaching further than the time when the rearward approaching vehicle image 98 starts to move, and the vehicle will soon It is determined whether or not the condition that the warning level is high, which can be regarded as overtaking 1 (step S3).
  • the third distance is a distance smaller than the first distance and the second distance used to determine the first condition.
  • the main control unit 40 determines that the second condition is satisfied (YES in step S3), it controls the lower HUD display control unit 35 to change the rear approaching vehicle image 98 displayed in the lower HUD display area 9. After moving to the vicinity of the upper side 9b, the light is turned off. Further, the main control unit 40 controls the upper HUD display control unit 25 to move the rear approaching vehicle image 98 displayed in the lower HUD display area 9 to the upper HUD display area 8 side for display (step S4). .
  • the timing of turning off the rearward approaching vehicle image 98 of the lower HUD display control unit 35 and the display timing of the rearward approaching vehicle image 88 of the upper HUD display control unit 25 may be simultaneous, or the display may overlap. , there may be some gaps.
  • the main control unit 40 calculates the relative speed from the distance to the vehicle behind, and when the second condition is satisfied, the image 98 of the vehicle approaching from behind seems to have reached the vicinity of the upper side 9b of the lower HUD display area 9. It is preferable to
  • FIG. 12 is an explanatory diagram showing a display example of a warning image in step S4 of the awareness raising process as a second specific example.
  • the upper HUD display control unit 25 controls the moving direction of the vehicle image 98 approaching from behind in the lower HUD display area 9 so that the vehicle image 98 approaching from behind displayed in the lower HUD display area 9 has moved to the upper HUD display area 8 .
  • a rear approaching vehicle image 88 is displayed on the extension line of . That is, the upper HUD display control unit 25 displays the rear approaching vehicle image 88 as a warning image in the vicinity of the lower left end of the upper HUD display area 8 .
  • the upper HUD display control unit 25 can indicate the speed direction of the rear vehicle relative to the vehicle 1 by using an image that can indicate arrow-shaped directionality.
  • the upper HUD display control unit 25 can intuitively inform the driver 4 of the degree of approach by changing the color of the rear approaching vehicle image 88 according to the distance to the rear vehicle.
  • the upper HUD display control unit 25 displays the rear approaching vehicle image 88 in a warning color such as red when the rear vehicle is closest to the driver 4, thereby indicating that the rear vehicle is closest to the driver 4. I can tell you.
  • the upper HUD display control unit 25 may inform the driver 4 of the relative speed and the inter-vehicle distance to the rear vehicle by using the length of the rear approaching vehicle image 88 (the length of the arrow) or the like.
  • the upper HUD display control unit 25 may increase the length of the arrow when the vehicle behind is approaching at high speed.
  • the lower HUD display control unit 35 may display the rear vehicle image 95 to indicate that there is a rear vehicle in the lower HUD display area 9 .
  • the main control unit 40 detects that the driver 4 has operated the direction indicator in the direction in which the vehicle behind is traveling when the rear approaching vehicle image 88 is displayed in the upper HUD display area 8 .
  • a notification to the effect that the lane change is impossible may be sent to the upper HUD display area 8.
  • the main control unit 40 determines that the recognition of the driver 4 is unnecessary, and the upper HUD display area 8 is displayed. The display of the rear approaching vehicle image 88 is extinguished.
  • the main control unit 40 may display the vehicle image 88 approaching from behind in the upper HUD display area 8 to that effect. good.
  • the upper HUD display control unit 25 expresses that the current position of the rear vehicle is in front of the vehicle 1 by bending and extending the tip of the rearward approaching vehicle image 88 toward the center of the upper HUD display area 8 in the left-right direction.
  • the main control unit 40 can make it appear as if the rear approaching vehicle image 98 displayed in the lower HUD display area 9 has moved to the upper HUD display area 8 . That is, the main control unit 40 displays the vehicle image 98 approaching from behind in the lower HUD display area 9 to the driver 4 for advance notice.
  • an image 88 of the vehicle approaching from behind is displayed in the upper HUD display area 8 in the stage of actually overtaking the vehicle 1, thereby increasing the recognition of the vehicle. raise.
  • the display system 10 can effectively utilize the upper HUD 20 and the lower HUD 30 and appropriately transmit necessary information to the driver 4 .
  • the main control unit 40 displays the lower HUD display area 9 and the upper HUD display area 8 until the last vehicle out of the plurality of vehicles passes the vehicle 1.
  • the rear-approaching vehicle images 98 and 88 displayed in 1 may continue to be displayed in the same display mode or the like.
  • the main control unit 40 continues to display the rearward approaching vehicle image 88 in the upper HUD display area 8, and turns off the rearward approaching vehicle image 88 in the upper HUD display area 8 when all rear vehicles are no longer present. Therefore, it is possible to urge the driver 4 to pay attention to the rear vehicle during that time.
  • the main control unit 40 displays the vehicle image 88 approaching from behind at that time. , 98 may be turned off, or the driver 4 may be notified of this by changing the display mode of the vehicle images 88, 98 approaching from behind.
  • the main control unit 40 reverses the arrow-shaped rearward approaching vehicle image 88 in the upper HUD display area 8 in the opposite direction (downward) so as to indicate the relative speed of the rearward vehicle, and expresses the appearance of the vehicle heading toward the vehicle 1.
  • the upper HUD display area 8 may not simply switch the vehicle image 88 approaching from the rear, but may switch while rotating the displayed vehicle image 88 approaching from the rear about the vertical or horizontal axis. Also, the upper HUD display area 8 is preferably displayed with lower visibility than before switching, for example, by lowering the luminance of the vehicle image 88 approaching from behind. As a result, since the direction of the arrow points to the lower HUD display area 9, the main control unit 40 can prompt the driver 4 to view the lower HUD display area 9 instead of the upper HUD display area 8 thereafter. .
  • a third specific example is a warning image (Fig. 13 of the front vehicle images 86, 96) are displayed.
  • the main control unit 40 determines whether or not the surrounding information acquisition unit 51 or the vehicle exterior information acquisition unit 52 has detected the preceding vehicle as the first condition (step S1 in FIG. 3).
  • the first condition is, for example, a situation in which the distance between the vehicle 1 and the preceding vehicle is appropriate, but the presence of the preceding vehicle should be recognized by the driver 4 and a warning should be given.
  • the main control unit 40 waits until the first condition is satisfied.
  • the main control unit 40 controls the lower HUD display control unit 35 to display an image (warning image, hereinafter referred to as "front vehicle image 96") showing information about the front vehicle. ) is displayed in the lower HUD display area 9 (step S2).
  • the main control unit 40 displays a forward vehicle image 96 in the same manner as the lower HUD display area 9 shown in FIG.
  • the front vehicle image 96 is shown as running ahead of the own vehicle image 91 .
  • the main control unit 40 determines whether or not a second condition is satisfied, for example, that the inter-vehicle distance is equal to or less than the second distance and the vehicle ahead is closer than the first condition (step S3).
  • the second distance is a distance smaller than the distance at the time of determination of the first condition, and the second condition is a situation in which the degree of warning is higher than that of the first condition.
  • the main control unit 40 maintains the display of the forward vehicle image 96 in the lower HUD display area 9 .
  • the main control section 40 controls the lower HUD display control section 35 to raise the front vehicle image 96 displayed in the lower HUD display area 9 upward. It is moved to the HUD display area 8 side (step S4).
  • the lower HUD display control unit 35 may move toward the upper HUD display area 8 after increasing the visibility of the forward vehicle image 96 displayed in the lower HUD display area 9 .
  • the lower HUD display control unit 35 increases the visibility by displaying the forward vehicle image 96 in a warning color such as red, for example. Further, the lower HUD display control unit 35 may maintain the increased visibility after moving the forward vehicle image 96, or may decrease the visibility. When the lower HUD display control unit 35 reduces the visibility, it is preferable to restore the visibility again after the forward vehicle image 86 is displayed in the upper HUD display area 8 .
  • FIG. 13 is an explanatory diagram showing a display example of a warning image in step S4 of the recognition level increasing process as a third specific example.
  • the upper HUD display control unit 25 displays the front vehicle image 96 in the lower HUD display area 9 in the horizontal direction so that the front vehicle image 96 displayed in the lower HUD display area 9 has moved to the upper HUD display area 8 .
  • a forward vehicle image 86 is displayed above the position.
  • the upper HUD display control unit 25 moves from the lower side 8a of the upper HUD display area 8 toward the upper side 8b of the upper HUD display area 8, thereby moving the vehicle image 86 from the lower HUD display area 9 to the upper side 8b. You can do something like this.
  • the vertical direction of the upper HUD display area 8 can express a sense of depth corresponding to the depth of the foreground and the front direction
  • the upper HUD display control unit 25 moves the front vehicle to a position corresponding to the actual inter-vehicle distance.
  • the upper HUD display control unit 25 changes the movement speed when displaying the front vehicle image 86 in the upper HUD display area 8 and the visibility during fade-in according to the relative speed with respect to the front vehicle. Information about the vehicle 1 can be transmitted to the driver 4 intuitively. While the forward vehicle image 86 is moving, the upper HUD display control unit 25 only requires the driver 4 to recognize that the forward vehicle image 86 is moving from the lower HUD display area 9 . It is also possible to display an image with reduced visibility, such as a blurred image.
  • the upper HUD display control unit 25 displays the forward vehicle image 86 with increased visibility as the vehicle-to-vehicle distance decreases or as the approach speed increases. For example, as shown in FIG. 13, the upper HUD display control unit 25 changes the display position and the movement speed when moving the display position by making the forward vehicle image 86 correspond to the inter-vehicle distance and the relative speed. When the inter-vehicle distance becomes small, the upper HUD display control unit 25 moves downward (toward the near side) as in the forward vehicle image 86a. In addition, when the inter-vehicle distance increases, the upper HUD display control unit 25 moves upward (backward) as in the front vehicle image 86b.
  • the upper HUD display control unit 25 increases the moving speed of the forward vehicle image 86 more than usual when the speed of approach between the vehicle 1 and the forward vehicle is high. Further, when the degree of warning to the driver 4 further increases, such as when the inter-vehicle distance becomes smaller than a predetermined distance, the upper HUD display control unit 25 changes the color of the front vehicle image 86 to a warning color or enlarges it. visibility may be increased by Further, when the degree of warning to the driver 4 is lowered, the upper HUD display control section 25 may restore the color and size of the front vehicle image 86 to lower the visibility.
  • the main control unit 40 When the second condition is no longer satisfied, that is, when the inter-vehicle distance to the forward vehicle is greater than the second distance, the main control unit 40 turns off the display of the forward vehicle image 86 in the upper HUD display area 8. .
  • the upper HUD display control unit 25 may turn off the displayed forward vehicle image 86 on the spot, or may turn off the displayed forward vehicle image 86 so as to fade out.
  • the main control unit 40 determines that the second condition is satisfied and the front vehicle image in the upper HUD display area 8 is satisfied. 86 representation may be maintained.
  • the main control unit 40 controls the lower HUD display control unit 35 to restore the display mode of displaying the front vehicle image 96 in the same manner as the lower HUD display area 9 shown in FIG.
  • the main control unit 40 can make it appear as if the forward vehicle image 96 displayed in the lower HUD display area 9 has moved to the upper HUD display area 8 . That is, the main control unit 40 first displays the front vehicle image 96 in the lower HUD display area 9 to notify the driver 4 of the presence of the front vehicle.
  • the image 86 of the vehicle in front is displayed in the upper HUD display area 8 in situations where the degree of warning is increased, such as when the distance between the vehicles is small or the approach speed is high. and raise awareness.
  • the display system 10 can effectively utilize the upper HUD 20 and the lower HUD 30 in cooperation with each other, and can appropriately transmit necessary information to the driver 4 .
  • the lower HUD display control unit 35 hides the vehicle speed image 92 and the like that are always displayed while the forward vehicle image 86 is being displayed in the upper HUD display area 8. It may be displayed or the visibility may be lowered. Further, when moving the front vehicle image 96 from the lower HUD display area 9 to the upper HUD display area 8 and starting to display the front vehicle image 86 in the upper HUD display area 8, the front vehicle image 86 is displayed in the upper HUD display area 8. , the upper HUD display area 8 preferably displays the forward vehicle image 86 so as to move behind the other image layer. .
  • the upper HUD display control unit 25 temporarily moves another image to a position that is not on the movement path of the forward vehicle image 86 to form a space for the forward vehicle image 86, and displays them so that they do not overlap. You may As a result, the interlocking of the displays of the lower HUD display area 9 and the upper HUD display area 8 can be maintained without reducing the visibility of other images that have already been displayed.
  • the upper HUD 20 and the lower HUD 30 are warning images showing information about the relationship between the vehicle 1 and the lane in which the vehicle 1 (self-vehicle) travels (the lane marking images 84 and 94 and the warning image 89 in FIG. 14). This is the awareness raising process that is executed when the is displayed.
  • the main control unit 40 controls the lower HUD display control unit 35 to display a marking line image 94 as shown in the lower HUD display area 9 in FIG. It is displayed in the lower HUD display area 9 .
  • the lower HUD display control unit 35 displays two lane marking images 94 located on the left and right sides of the vehicle 1 . good too.
  • the main control unit 40 moves the host vehicle image 91 toward the approaching lane marking image 94 in conjunction with the movement of the vehicle 1. .
  • the main control unit 40 determines whether or not the first condition that the distance between the vehicle 1 and the lane marking is less than or equal to the first distance is satisfied (step S1 in FIG. 3).
  • the first condition is, for example, a situation in which there is a high possibility that the vehicle 1 will deviate from the lane marking.
  • the main control section 40 maintains the display in the lower HUD display area 9 .
  • the main control section 40 controls the lower HUD display control section 35 to increase the visibility of the division line image 94 in the lower HUD display area 9 .
  • the lower HUD display control unit 35 enhances visibility by highlighting the marking line image 94 in a warning color such as red or by blinking the marking line image 94 .
  • the main control unit 40 determines whether the second condition that the distance between the vehicle 1 and the lane marking is less than or equal to a second distance smaller than the first distance is satisfied (step S3).
  • the second condition is a situation in which the degree of warning is higher than that under the first condition, and the possibility of the vehicle 1 deviating from the lane marking is further increased.
  • the second condition also includes a situation in which part or all of the vehicle 1 deviates from the lane markings.
  • the main control unit 40 determines that the second condition is not satisfied (NO in step S3), the division line image 94 in the lower HUD display area 9 is maintained.
  • the first condition is no longer satisfied, such as when the distance between the vehicle 1 and the lane marking becomes greater than the first distance, the lower HUD display control unit 35 displays the lane marking image 94 before the first condition is satisfied. You may return to the mode.
  • FIG. 14 is an explanatory diagram showing a display example of a warning image in step S4 of the recognition level increasing process as a fourth specific example.
  • the upper HUD display control unit 25 displays the marking line image 94 in the lower HUD display area 9 in the horizontal direction so that the marking line image 94 displayed in the lower HUD display area 9 has moved to the upper HUD display area 8 .
  • a marking line image 84 is displayed above the position.
  • the lower HUD display control unit 35 changes the lane marking image 94 displayed in the lower HUD display area 9 with increased visibility under the second condition to the lane marking image 94 displayed under the first condition. Reduce the visibility so that it returns to
  • the upper HUD display control unit 25 starts displaying the lane marking image 84 in the same display mode as the lane marking image 94 displayed in the lower HUD display area 9 with increased visibility under the second condition.
  • the upper HUD display control unit 25 moves the upper HUD display area 8 from the lower side 8a side to the upper side 8b side by a predetermined amount, for example, and starts displaying the division line image 84 .
  • the marking line image 84 whose visibility has increased in the lower HUD display area 9, fades out from the lower HUD display area 9 and fades in (moves) into the upper HUD display area 8. is displayed as
  • the upper HUD display control unit 25 increases the moving speed in the upper HUD display area 8 if there is a high need for a warning. can increase the degree of warning of
  • the upper HUD display control unit 25 also displays a warning image 89 after displaying the marking line image 84 superimposed on the marking line image 84 or simultaneously with the marking line image 84 .
  • the warning image is an image that further enhances the visibility of the lane marking image 84 corresponding to the lane marking that the vehicle 1 may deviate from or has actually deviated from.
  • the upper HUD display control unit 25 displays (pops up) the warning image 89 so as to rise from the lower side 8a side of the upper HUD display area 8 to the upper side 8b side, or the upper HUD display area 8 can express a sense of depth. In some cases, the actual scene is displayed so as to rise from below in the vertical direction to above.
  • the upper HUD display control section 25 may link the visibility of the warning image 89 with the degree of warning obtained from the amount of deviation from the lane marking or the like.
  • the upper HUD display control unit 25 displays the lane marking image 84 in the approximate center of the upper HUD display area 8 in the left-right direction, thereby making the lane marking image 84 look like the actual scene. It is displayed superimposed on the division line. However, if the vehicle 1 deviates from the lane markings, the upper HUD display control unit 25 must adjust the lane marking image 84 and the warning image 89 ( hereinafter may be referred to as a "separation line image 84, etc.”) must be displayed while being displaced from the center in the left-right direction.
  • the warning image 89 hereinafter may be referred to as a "separation line image 84, etc.
  • the upper HUD display control unit 25 controls the position of the vehicle 1 with respect to the lane marking by steering after displaying the lane marking image 84 or the like. For example, when transitioning to running at an appropriate position within the lane marking, the display position of the lane marking image 84 or the like, which is shifted from the center position in the left-right direction in the upper HUD display area 8, is moved according to the steering amount of the vehicle 1. You may For example, when the vehicle 1 deviates from the left lane marking, the upper HUD display control unit 25 displays the lane marking image 84 and the like shifted rightward from the center of the upper HUD display area 8 in the left-right direction. . When the vehicle 1 is steered rightward, the upper HUD display control unit 25 may move the lane marking image 84 or the like leftward in order to superimpose it on the lane marking in the actual scene.
  • the upper HUD display control unit 25 may display the marking line image 84 and the like by fixing them substantially at the horizontal center of the upper HUD display area 8 without shifting them from the center in the horizontal direction, or displaying the marking line image 84 and the like. Even if the vehicle is steered after the start, the display position of the marking line image 84 and the like does not have to be moved.
  • the main control unit 40 determines that the deviation of the lane marking of the vehicle 1 is eliminated and the second condition is not satisfied. is turned off, and the marking line image 94 is displayed in the lower HUD display area 9 in the display mode used when the first condition is satisfied.
  • the upper HUD display control unit 25 displays the marking line image 84, etc., in the opposite effect (moving from the bottom side 8a side to the top side 8b side, etc.) used when starting the display of the marking line image 84, etc. display may be extinguished.
  • the lower HUD display control unit 35 performs an effect such that the division line image 84, which is produced to move to the upper HUD display area 8 when the second condition is satisfied, returns to the lower HUD display area 9 again. It may be performed while increasing the visibility of the line image 94 .
  • the main control unit 40 can make it appear as if the division line image 94 displayed in the lower HUD display area 9 has moved to the upper HUD display area 8 . That is, the main control unit 40 emphasizes the marking line image 94 and displays it in the lower HUD display area 9 to warn the driver 4 of the departure from the marking line.
  • the marking line image 84 or the like is displayed in the upper HUD display area 8 in order to further raise the recognition level, thereby raising the recognition level and issuing a warning.
  • the display system 10 can effectively utilize the upper HUD 20 and the lower HUD 30 in cooperation with each other, and can appropriately transmit necessary information to the driver 4 .
  • the upper HUD 20 and the lower HUD 30 are vehicles traveling around the vehicle 1 (own vehicle), and a warning image (Fig. 15 to 17 of the vehicle images 182, 192) approaching from behind are displayed.
  • the main control unit 40 determines whether or not the first condition that the peripheral information acquisition unit 51 or the vehicle exterior information acquisition unit 52 has detected an approaching vehicle behind is satisfied (step S1 in FIG. 3). For example, when the distance between the vehicle 1 and the vehicle behind (inter-vehicle distance) is less than or equal to the first distance, or when the approach speed of the vehicle behind is greater than a predetermined value, the first condition may be satisfied. The first distance is the same as in the second specific example. When determining that the first condition is not satisfied (NO in step S1), the main control unit 40 waits until the first condition is satisfied.
  • step S1 When determining that the first condition is satisfied (YES in step S1), the main control section 40 controls the lower HUD display control section 35 to display an image (warning image, hereinafter referred to as "vehicle approaching from behind") showing information about an approaching vehicle behind. image (warning image) 192") is displayed in the lower HUD display area 9 (step S2).
  • FIG. 15 is an explanatory diagram showing a display example of a warning image in step S2 of the recognition level increasing process as the fifth specific example. In the fifth specific example, an example in which a rear vehicle is running on the left rear side will be described.
  • the lower HUD display control unit 35 displays the rear approaching vehicle image 192 in the left area of the lower HUD display area 9 .
  • the lower HUD display control unit 35 makes the upper, lower, left, and right sides of the lower HUD display area 9 correspond to the front, rear, rear, left, and right of the vehicle 1, and displays the rearward direction so that the positional relationship between the vehicle behind and the vehicle 1 can be easily recognized.
  • An approaching vehicle image 192 is displayed. That is, the lower HUD display control unit 35 starts displaying the rear approaching vehicle image 192 from the lower left of the lower HUD display area 9 .
  • the lower HUD display control unit 35 can indicate the speed direction of the rear vehicle with respect to the vehicle 1 by using an image that can indicate the directionality of an arrow as the rearward approaching vehicle image 192. .
  • the lower HUD display control unit 35 can intuitively inform the driver 4 of the degree of approach by changing the color of the rear approaching vehicle image 192 according to the distance to the rear vehicle.
  • the lower HUD display control unit 35 displays the rear approaching vehicle image 192 in a warning color such as red when the rear vehicle is closest to the driver 4, thereby indicating that the rear vehicle is closest to the driver 4. I can tell you.
  • the lower HUD display control unit 35 displays a vehicle speed image 191 having an index image 193 formed linearly toward the upper HUD display area 8 in a part near the upper side 9b of the lower HUD display area 9 .
  • the index image 193 is formed so as to match the extension line of the demarcation line image 183, which will be described later.
  • the lower HUD display control unit 35 displays the vehicle image 192 approaching from behind along the index image 193 in the vicinity of the upper side 9b.
  • the lower HUD display control unit 35 when the lower HUD display control unit 35 increases the number of vehicle images 192 approaching from behind, it displays an emphasized warning image 194 superimposed on the leading vehicle image 192 approaching from behind.
  • the lower HUD display control unit 35 displays the emphasized warning image 194, for example, as an image using a gradation that has a reference point at the center of the image and becomes lighter with increasing distance from the reference point.
  • the lower HUD display control unit 35 displays the emphasized warning image 194 in front of the layers such as the rear approaching vehicle image 192 displayed in the lower HUD display area 9, so that the driver 4 recognizes the emphasized warning image 194. It is preferable to make it easier to
  • the main control unit 40 determines whether or not the following condition is satisfied: the distance between the vehicle 1 and the rear vehicle is equal to or less than the second distance, the rear vehicle is closer than the first condition, and the degree of warning is high. judge.
  • the second distance is the same as in the second specific example.
  • FIG. 16 is an explanatory diagram showing another display example of the warning image in step S2 of the awareness raising process as the second specific example.
  • the lower HUD display control unit 35 sequentially increases the rear approaching vehicle image 192 according to the direction of the relative speed of the rear vehicle. Specifically, the lower HUD display control unit 35 gradually increases the rearward-approaching vehicle image 192 upward to the upper right, thereby making it possible to perceive that the rearward vehicle is traveling forward from the rear toward the vehicle 1 . In addition, the lower HUD display control unit 35 increases the rearward approaching vehicle image 192 toward the lower left end of the upper HUD display area 8 so that the rearward approaching vehicle image 192 can be displayed from the lower HUD display area 9 to the upper HUD display area 8 later. To improve the feeling of interlocking display of the upper HUD 20 and the lower HUD 30 when increasing .
  • the lower HUD display control unit 35 moves the emphasized warning image 194 along the increasing order of the vehicle images 192 approaching from behind after the vehicle images 192 approaching from behind are increased. Specifically, the lower HUD display control unit 35 gradually moves the emphasized warning image 194 upward and to the right, thereby strongly recognizing that the vehicle behind is traveling from the rear to the front toward the vehicle 1 .
  • the lower HUD display control unit 35 moves only the emphasized warning image 194 toward the upper HUD display area 8 and erases it while cutting off from the upper side 9b of the lower HUD display area 9.
  • the lower HUD display control unit 35 erases the rear approaching vehicle image 192 at the same time when the emphasized warning image 194 is erased.
  • the lower HUD display control unit 35 repeatedly displays these display operations of the rear approaching vehicle image 192 and the emphasized warning image 194 .
  • the lower HUD display control unit 35 moves the emphasized warning image 194, it is preferable to appropriately change the expression of the emphasized warning image 194 in order to convey the state of the vehicle behind.
  • the lower HUD display control unit 35 may change the isotropy of the emphasized warning image 194 and display it so as to extend in the increasing direction, in order to produce that the rear vehicle is moving.
  • the lower HUD display control unit 35 may change the area of the emphasized warning image 194 or change the increasing speed of the emphasized warning image 194 according to the relative speed and distance to the vehicle behind.
  • the upper HUD display control unit 25 displays an image of a vehicle approaching from behind (warning image) 182 in the upper HUD display area 8 as an advance notice of a warning image to be displayed under the second condition along with text, sound, and the like. may be displayed.
  • the main control unit 40 sets the second condition, for example, that the inter-vehicle distance is equal to or less than the third distance, or that the vehicle behind is approaching more than the time when the rearward approaching vehicle image 192 starts to move, and the vehicle will soon It is determined whether or not the condition that the warning level is high, which can be regarded as overtaking 1 (step S3).
  • the third distance is the same as in the second specific example.
  • the main control section 40 controls the lower HUD display control section 35 to change the rear approaching vehicle image 192 displayed in the lower HUD display area 9. Keep visible. At this time, the emphasized warning image 194 is not displayed. Further, the main control unit 40 controls the upper HUD display control unit 25 to increase and display the rear approaching vehicle image 192 displayed in the lower HUD display area 9 toward the upper HUD display area 8 (step S4). . In addition, the main control unit 40 calculates the relative speed from the distance to the vehicle behind, and when the second condition is satisfied, the rearward approaching vehicle image 192 appears to have reached the vicinity of the upper side 9b of the lower HUD display area 9. is preferred.
  • FIG. 17 is an explanatory diagram showing a display example of a warning image in step S4 of the awareness raising process as a second specific example.
  • the upper HUD display control unit 25 adjusts the moving direction of the rear approaching vehicle image 192 in the lower HUD display area 9 so that the rear approaching vehicle image 192 displayed in the lower HUD display area 9 is increased to the upper HUD display area 8 .
  • a rear approaching vehicle image 182 is displayed on the extension line of . That is, the upper HUD display control unit 25 displays the rear approaching vehicle image 182 as a warning image in the vicinity of the lower left end of the upper HUD display area 8 .
  • the upper HUD display control unit 25 displays an image of a vehicle approaching from behind 182 in the same manner as the vehicle image of vehicle approaching from behind 192 (substantially the same design, substantially the same color) that can indicate an arrow-shaped directionality. By using it, it is possible to indicate the speed direction of the vehicle behind the vehicle 1 .
  • the upper HUD display control unit 25 sequentially increases the rear approaching vehicle image 182 in accordance with the direction of the relative speed of the rear vehicle.
  • the upper HUD display control unit 25 displays in the upper HUD display area 8 a lane marking image 183 simulating a lane superimposed on the lane of the road surface in front of the vehicle 1 .
  • the upper HUD display control unit 25 displays the rear approaching vehicle image 182 along with the index image 193 .
  • the upper HUD display control unit 25 increases the number of vehicle images 182 approaching from behind, it displays an emphasized warning image 184 superimposed on the leading vehicle image 182 approaching from behind.
  • the upper HUD display control unit 25 uses a gradation for the emphasized warning image 184 that has a reference point at the center of the image in the same manner as the emphasized warning image 194 (substantially the same design, substantially the same color) and becomes lighter as the distance from the reference point increases. Display as an image.
  • the upper HUD display control unit 25 moves the emphasized warning image 184 along the increasing order of the vehicle images 182 approaching from behind after the vehicle images 182 approaching from behind are increased.
  • the upper HUD display control unit 25 moves only the emphasized warning image 184 toward the upper side 8b of the upper HUD display area 8, and erases it from the upper side 8b.
  • the upper HUD display control unit 25 erases the rear approaching vehicle image 182 at the same time when the emphasized warning image 184 is erased.
  • the lower HUD display control unit 35 erases the rear approaching vehicle image 192 at the same time when the emphasized warning image 184 is erased.
  • the main control unit 40 controls the lower HUD display control unit 35 and the upper HUD display control unit 25, and displays the rear approaching vehicle image 192 and the emphasized warning image 194, and the rear approaching vehicle image 192 and the emphasized warning image 194. is displayed repeatedly.
  • the lower HUD display control unit 35 may display the rear vehicle image 95 to indicate that there is a rear vehicle in the lower HUD display area 9 . Further, when the main control unit 40 detects that the driver 4 has operated the direction indicator in the direction in which the vehicle behind is traveling when the rear approaching vehicle image 182 is displayed in the upper HUD display area 8 . For example, in addition to or instead of the rear approaching vehicle image 182, a notification indicating that the lane cannot be changed may be sent to the upper HUD display area 8.
  • the main control unit 40 determines that the recognition of the driver 4 is unnecessary, and the upper HUD display area 8 is displayed.
  • the display of the vehicle images 182 and 192 approaching from behind is extinguished.
  • the main control unit 40 may express that effect in the rear approaching vehicle image 182 in the upper HUD display area 8. good.
  • the upper HUD display control unit 25 expresses that the current position of the rear vehicle is in front of the vehicle 1 by bending and extending the tip of the rear approaching vehicle image 182 toward the center of the upper HUD display area 8 in the left-right direction.
  • the main control unit 40 can make it appear as if the rear approaching vehicle image 192 displayed in the lower HUD display area 9 has progressed to the upper HUD display area 8 and is approaching the vehicle 1 . That is, the main control unit 40 displays the vehicle image 192 approaching from behind in the lower HUD display area 9 to the driver 4 for advance notice.
  • an image 182 of the vehicle approaching from behind is displayed in the upper HUD display area 8 at the stage of actually overtaking the vehicle 1, thereby increasing the recognition of the vehicle. raise.
  • the display system 10 can effectively utilize the upper HUD 20 and the lower HUD 30 and appropriately transmit necessary information to the driver 4 .
  • the first display and the second display are both HUDs, one or both of them is a display panel such as a TFT (Thin Film Transistor) type liquid crystal display or an organic EL (Electroluminescence) display.
  • a display panel such as a TFT (Thin Film Transistor) type liquid crystal display or an organic EL (Electroluminescence) display.
  • TFT Thin Film Transistor
  • organic EL Electrode
  • the projection members of the upper HUD 20 and the lower HUD 30 are the windshield 3
  • the projection members may be combiners instead of or together with this.
  • the first and second conditions and the warning image used in the first to fifth specific examples are examples, and the contents of the conditions and the warning image may be set as appropriate.
  • the information (image) displayed in the lower HUD display area 9 (second display area) is moved to the upper HUD display area 8 (first display area) and displayed, or the upper HUD display area 8 (first display area)
  • the information displayed in is displayed by moving to the lower HUD display area 9 (second display area)
  • the extinguishing and appearance of the information may or may not have effects such as fade-out or fade-in.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Traffic Control Systems (AREA)

Abstract

L'invention fournit un système d'affichage doté d'excellentes propriétés de transmission d'information. Selon un mode de réalisation de l'invention, ce système d'affichage est équipé : d'un premier écran qui affiche une image dans une première région d'affichage de sorte qu'elle peut être vue en une position à une première distance d'affichage par rapport à la ligne de vision du conducteur d'une automobile ; d'un second écran qui affiche une image dans une seconde région d'affichage différente de la première région d'affichage de sorte qu'elle peut être vue à une seconde distance d'affichage plus grande que la première distance d'affichage par rapport à la ligne de vision du conducteur ; et d'une partie commande d'affichage qui exécute un traitement d'augmentation de visibilité selon lequel une image d'alerte est affichée dans la seconde région d'affichage dans le cas où une première condition est satisfaite, et l'image d'alerte se déplace vers la première région et y est affichée, dans le cas où une fois la première condition satisfaite, une seconde condition de niveau d'alerte supérieur à celui de la première condition est satisfaite, ou un traitement de baisse de visibilité selon lequel l'image d'alerte est affichée dans la première région d'affichage dans le cas où une seconde condition est satisfaite, et l'image d'alerte se déplace vers la seconde région et y est affichée, dans le cas où une fois la seconde condition satisfaite, la première condition est satisfaite.
PCT/JP2023/002575 2022-01-28 2023-01-27 Système d'affichage WO2023145856A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2022-011356 2022-01-28
JP2022011356 2022-01-28
JP2022-151036 2022-09-22
JP2022151036 2022-09-22

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WO2023145856A1 true WO2023145856A1 (fr) 2023-08-03

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000036100A (ja) * 1998-07-16 2000-02-02 Hino Motors Ltd 車間距離検出装置
WO2015037325A1 (fr) * 2013-09-12 2015-03-19 株式会社デンソー Dispositif d'affichage embarqué dans un véhicule
JP2016068693A (ja) * 2014-09-29 2016-05-09 矢崎総業株式会社 車両用表示装置
US20180067307A1 (en) * 2016-09-02 2018-03-08 Dura Operating, Llc Heads-up display windshield
JP2019219856A (ja) * 2018-06-19 2019-12-26 アルパイン株式会社 周辺監視システム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000036100A (ja) * 1998-07-16 2000-02-02 Hino Motors Ltd 車間距離検出装置
WO2015037325A1 (fr) * 2013-09-12 2015-03-19 株式会社デンソー Dispositif d'affichage embarqué dans un véhicule
JP2016068693A (ja) * 2014-09-29 2016-05-09 矢崎総業株式会社 車両用表示装置
US20180067307A1 (en) * 2016-09-02 2018-03-08 Dura Operating, Llc Heads-up display windshield
JP2019219856A (ja) * 2018-06-19 2019-12-26 アルパイン株式会社 周辺監視システム

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