JP2019131022A - Display device - Google Patents

Abstract

To provide a display device which can perform display depending on the situation, and can suppress consumption power.SOLUTION: A display device 100 mounted on a vehicle comprises plural display parts (first to third display parts 11 to 13) which display an image, and a control part 31. The control part 31 has functions as a display control part which control display control of the plural display parts, and as a specification part which specifies whether a vehicle exists in an estimated stopping state that the vehicle reaches stopping at a traffic light positioned on a forward runway of the vehicle or whether a vehicle exists in an estimated parking state that the vehicle reaches parking. The display control part changes at least any one of the plural display parts from a first mode to a second mode according to such specification performed by the specification part that the vehicle exists in the estimated stopping state or the estimated parking state. The second mode is a mode in which at least any one of a display intensity and a frame rate of an image is further decreased compared with that in the first mode.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a display device mounted on a vehicle.

  As a display device mounted on a conventional vehicle, for example, there is one disclosed in Patent Document 1. The display device disclosed in Patent Document 1 is configured as a navigation device, and when the driver turns his line of sight toward the monitor while driving, the display device is changed to a restriction mode in which an image is not displayed, while the vehicle stops. In this case, the display is performed in the normal mode in which no restriction is applied even if the driver looks at the monitor.

JP 2007-45169 A

  In the display device disclosed in Patent Document 1, the display device is in the normal mode even when it is assumed that the situation outside the vehicle is more important for the driver such as when the vehicle is stopped or parked. This will increase the power consumption of the device. In particular, when the display device includes a plurality of display units, power consumption increases.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a display device capable of performing display according to the situation and suppressing power consumption.

In order to achieve the above object, a display device according to the present invention includes:
A display device mounted on a vehicle,
A plurality of display units for displaying images;
A display control unit that performs display control of the plurality of display units;
A specifying unit that specifies whether the vehicle is in a stop estimated state in which the vehicle reaches a stop at a traffic light located on a forward runway of the vehicle and whether the vehicle is in a parking estimated state in which the vehicle reaches parking;
The display control unit changes at least one of the plurality of display units from the first mode to the second mode according to the specification by the specifying unit when the vehicle is in the stop estimated state or the parking estimated state. Switch to mode,
The second mode is a mode in which at least one of the display brightness and the frame rate of the image is reduced as compared with the first mode.

  According to the present invention, it is possible to perform display according to the situation and suppress power consumption.

It is a figure for demonstrating the mounting aspect to the vehicle of the display apparatus which concerns on one Embodiment of this invention. It is a figure for demonstrating the display mode of the head-up display with which the display apparatus which concerns on one Embodiment of this invention is provided. It is a block diagram which mainly shows the display apparatus which concerns on one Embodiment of this invention. It is a flowchart of the power saving control process which concerns on one Embodiment of this invention.

  A display device according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the display device 100 according to the present embodiment includes a first display unit 11, a second display unit 12, and a third display unit 13 (inside and around the dashboard 2 of the vehicle 1). Hereinafter, not only information related to the vehicle 1 (hereinafter also referred to as “vehicle information”) but also information other than the vehicle information is integrated with the driver D (see FIG. 2). The vehicle information includes not only information on the vehicle 1 itself but also information on the outside of the vehicle 1 related to the operation of the vehicle 1.

  As shown in FIG. 3, the display device 100 includes a meter 21, a HUD (Head-Up Display) 22, a CID (Center Information Display) 23, and a control device 30.

  The first display unit 11 is realized by the meter 21, the second display unit 12 is realized by the HUD 22, and the third display unit 13 is realized by the CID 23.

  As shown in FIG. 1, the meter 21 is positioned in front of the steering wheel 3 when viewed from the driver D, and notifies the measurement amount related to the vehicle 1 such as the vehicle speed and the engine speed. As shown in FIG. 3, the meter 21 includes an LCD (Liquid Crystal Display) 21a and a light source 21b (backlight) that illuminates the LCD 21a from behind. For example, the LCD 21a is a TFT (Thin Film Transistor) type, and the light source 21b is composed of an LED (Light Emitting Diode). The meter 21 displays an image indicating the measurement amount on the first display unit 11 under the control of the control device 30. That is, an image displayable area of the LCD 21 a is the first display unit 11.

  As shown in FIG. 2, the HUD 22 is provided inside the dashboard 2 and emits display light L toward the windshield 4 subjected to the combiner process. The display light L reflected by the windshield 4 goes to the driver D side. The driver D can visually recognize the image represented by the display light L as the virtual image V in front of the windshield 4 by placing the viewpoint in the eye box E. That is, the HUD device 100 displays the virtual image V at the front position of the windshield 4. As a result, the driver D can observe the virtual image V superimposed on the landscape.

  In addition, the 2nd display part 12 in this specification shall show the arbitrary parts between the display position of the eye box E and the virtual image V. FIG. That is, the 2nd display part 12 is located above the 1st display part 11, as shown in FIG. Further, displaying the virtual image V by the HUD 22 is also expressed as “displaying an image on the second display unit 12”. The display positions of the eye box E and the virtual image V are set in advance based on the size of the display surface of the LCD 22a, which will be described later, and an optical system composed of various mirrors in the HUD and the windshield 4 that is combined.

  As shown in FIG. 3, the HUD 22 includes an LCD 22 a, a light source 22 b (backlight) that illuminates the LCD 22 a from the back, and a reflection unit including a plane mirror and a concave mirror (not shown). For example, the LCD 22a is of the TFT type, and the light source 22b is composed of LEDs.

  Under the control of the control device 30, the HUD 22 generates the display light L when the LCD 22a illuminated by the light source 22b displays an image. The generated display light L is emitted toward the windshield 4 after being reflected by the reflecting portion. Thereby, as described above, the image indicating the vehicle information can be displayed on the second display unit 12. Note that the content notified by the HUD 22 using an image may overlap with a part of the content notified by the meter 21.

  As shown in FIG. 1, the CID 23 is located closer to the center of the vehicle 1 than the meter 21 and is located above the center console, and displays not only vehicle information but also information other than vehicle information (for example, entertainment information). It is possible. As shown in FIG. 3, the CID 23 includes an LCD 23a and a light source 23b (backlight) that illuminates the LCD 23a from behind. For example, the LCD 23a is of the TFT type, and the light source 23b is composed of LEDs. In the LCD 23 a, an image displayable area is the third display unit 13. In addition, the CID 23 includes an operation unit including a touch panel that transmits the display image of the third display unit 13.

  The CID 23 displays a predetermined image on the third display unit 13 under the control of the control device 30. In addition, the CID 23 supplies a signal indicating the content of a user operation (operation by the driver D or a passenger) performed on the touch panel to the control device 30.

  The control device 30 includes a microcomputer that controls the overall operation of the display device 100, and includes a control unit 31, a ROM (Read Only Memory) 32, and a RAM (Random Access Memory) 33, as shown in FIG. . Moreover, the control apparatus 30 is provided with the input / output circuit for communicating with a drive circuit and the various systems in the vehicle 1 as a structure which is not shown in figure.

  The ROM 32 stores an operation program and various image data in advance. The RAM 33 temporarily stores various calculation results and the like. The control unit 31 includes a CPU (Central Processing Unit) 31a that executes an operation program stored in the ROM 32, and a GPU (Graphics Processing Unit) 31b that executes image processing in cooperation with the CPU 31a. In particular, the ROM 32 stores an operation program for executing a power saving control process described later. A part of the control unit 31 may be configured by an ASIC (Application Specific Integrated Circuit). Moreover, the structure of the control apparatus 30 and the control part 31 is arbitrary as long as the function demonstrated below is satisfied.

  The control unit 31 drives and controls each of the meter 21, the HUD 22, and the CID 23. For example, the CPU 31a drives and controls each of the light source 21b of the meter 21, the light source 22b of the HUD 22, and the light source 23b of the CID 23. Further, the GPU 31b cooperates with the CPU 31a to drive and control the LCD 21a of the meter 21, the LCD 22a of the HUD 22, and the LCD 23a of the CID 23.

  The CPU 31a of the control unit 31 performs display control of each of the plurality of display units based on various image data stored in the ROM 32 in cooperation with the GPU 31b. The GPU 31b determines the control content of each display operation of the plurality of display units based on the display control command from the CPU 31a. The GPU 31 b reads image part data necessary for configuring one screen to be displayed on each of the plurality of display units from the ROM 32 and transfers the image part data to the RAM 33. Further, the GPU 31 b uses the RAM 33 to create picture data for one screen based on the image part data and various image data received from the outside of the display device 100 through communication. Then, when the GPU 31b completes the picture data for one screen in the RAM 33, the GPU 31b transfers it to each of the plurality of display units in accordance with the update timing of the image. Thereby, the image according to each of a some display part is displayed. In the power saving mode described later, the GPU 31b may suppress the increase in processing load and power consumption by reducing the frequency of communication with the RAM 33 and the frequency of image output to the display unit as compared to the normal mode. .

  In the “normal mode” that is the default when the display device 100 is started up, the control unit 31 updates each image of the plurality of display units at a frame rate of 60 fps (frames per second), for example. On the other hand, the control unit 31 sets the display unit that satisfies a predetermined condition to be described later to the power saving mode. In the “power saving mode”, the frame rate is reduced to, for example, 30 fps compared to the normal mode. Further, the power saving mode may be a mode in which the display brightness of the image is lowered as compared with the normal mode. That is, the power saving mode may be an aspect in which at least one of the image display luminance and the frame rate is reduced as compared with the normal mode. In the power saving mode other than the meter 21, that is, in the power saving mode of the HUD 22 and the CID 23, a mode in which the image displayed in the normal mode is deleted and the display unit is turned off may be used.

  In the power saving mode, when the display luminance is lowered than in the normal mode, the degree of the reduction may be changed according to the ambient light intensity around the display device 100. For example, the control unit 31 acquires external light intensity from an external light sensor (not shown), and determines that the acquired external light intensity is equal to or less than a threshold value set in advance in the ROM 32 and the surroundings are dark (such as at night or when traveling in a tunnel). In this case, the degree of decrease in display luminance may be made larger than when the external light intensity is larger than the threshold (for example, during the daytime). For example, the display luminance may be controlled by the CPU 31a that controls driving of the light source 21b of the meter 21, the light source 22b of the HUD 22, and the light source 23b of the CID 23 via a driving circuit (not shown).

  The CPU 31 a of the control unit 31 communicates with each of an ADAS (Advanced Driver-Assistance Systems) device 40, an ECU (Electronic Control Unit) 50, and a voice input / output unit 80 mounted on the vehicle 1. As the communication, for example, a communication method such as CAN (Controller Area Network), Ethernet, MOST, or LVDS (Low Voltage Differential Signaling) is applicable.

  The ADAS device 40 mainly acquires information outside the vehicle 1 and communicates between the vehicle 1 and a wireless network (V2N: Vehicle To cellular Network), and communicates between the vehicle 1 and another vehicle (V2V: Vehicle To). Vehicle), communication between the vehicle 1 and a pedestrian (V2P: Vehicle To Pedestrian), and various modules that enable communication between the vehicle 1 and roadside infrastructure (V2I: Vehicle To roadside Infrastructure). That is, the ADAS device 40 enables communication by V2X (Vehicle To Everything) between the vehicle 1 and the outside of the vehicle 1.

  For example, (i) the ADAS device 40 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, an access point of a public wireless LAN (Local Area Network), and the like. Internet communication is provided. The ADAS device 40 includes a GPS controller that calculates the position of the vehicle 1 based on a GPS (Global Positioning System) signal received from an artificial satellite or the like. With these configurations, communication by V2N is enabled. (Ii) Further, the ADAS device 40 includes a wireless communication module compliant with a predetermined wireless communication standard, and performs communication by V2V or V2P. (Iii) The ADAS device 40 includes a communication device that wirelessly communicates with roadside infrastructure. For example, a roadside radio installed as an infrastructure from a base station of a driving safety support system (DSSS) Traffic information is acquired through the device. As a result, communication by V2I becomes possible.

  The ADAS device 40 transmits, to the CPU 31a, operation mode information indicating whether the vehicle 1 is set in an automatic operation mode or a manual operation mode. Here, the vehicle 1 can be switched between the automatic operation mode and the manual operation mode under the control of the ECU 50. For example, the automatic operation level when the manual operation mode is set is level 0 or level 1. At level 0, the driver D operates all the main control systems (acceleration / steering / braking). In level 1, the system performs any one of acceleration, steering, and braking in a supportive manner. For example, the automatic driving level when the automatic driving mode is set is level 2 or higher. At level 2, the system supports two of acceleration, steering and braking. At level 3, the system controls acceleration / steering / braking only under limited circumstances or traffic conditions, and the driver D responds when the system requests it. The operation mode information may be transmitted from the ECU 50 to the CPU 31a.

  The ADAS device 40 includes a stereo camera that captures the outside of the vehicle 1, an object detection unit that includes a sonar, an ultrasonic sensor, and a millimeter wave radar, detects a danger around the vehicle 1, and warns the detected danger as warning information. To the CPU 31a. The warning information transmitted to the CPU 31a is based on traffic information that can be acquired by V2N or V2I communication, approaching vehicle information that can be acquired by V2V communication, pedestrian information that can be acquired by V2P communication, and the like. Also good.

  Further, as described above, the ADAS device 40 supplies signal information indicating the signal state of the traffic signal ahead of the vehicle 1 to the control unit 31 by V2I communication wirelessly communicating with the roadside infrastructure. The control unit 31 that has acquired the signal information indicates that the traffic light in front of the vehicle 1 is currently a red signal (indicating a stop instruction), or a predetermined period (for example, several seconds to several seconds) that the traffic signal has previously set in the ROM 32. Determine whether the signal will turn red within 10 seconds).

  Note that the ADAS device 40 may include a camera that captures an image of the scenery in front of the vehicle 1 and generates image data, and an image processing unit that performs image processing of the image data. Then, the ADAS device 40 identifies the state of the traffic light in the front landscape (currently, blue, yellow, or red signal) by a known image analysis method such as a pattern matching method, and signals the identified information as a signal. Information may be supplied to the control unit 31.

  The ECU 50 controls each part of the vehicle 1 and performs driving support by switching the driving mode of the vehicle 1 under a predetermined condition. The driving assistance includes driving assistance that automatically parks at a desired parking location in accordance with the operation of the driver D from an operation unit (not shown). ECU50 transmits the automatic parking information which shows that to the control part 31 at the time of automatic parking execution. The automatic parking information may be transmitted from the ADAS device 40 to the control unit 31.

  Further, the ECU 50 supplies gear information indicating the current gear position (shift position) of the vehicle 1 to the control unit 31. Based on the gear information, the control unit 31 specifies whether or not the current gear is R (reverse), that is, whether or not the vehicle 1 moves backward.

  Further, the ECU 50 transmits vehicle speed information indicating the current vehicle speed of the vehicle 1 to the CPU 31a. Note that the CPU 31a may acquire vehicle speed information from a vehicle speed sensor. In addition, the ECU 50 transmits a measured amount such as the engine speed, warning information of the vehicle 1 itself (fuel reduction, engine oil pressure abnormality, etc.) and other vehicle information to the CPU 31a. Based on the information acquired from the ECU 50, the CPU 31a causes the meter 21 to display the vehicle speed, the engine speed, various warnings, and the like via the GPU 31b.

  The voice input / output unit 80 includes a microphone, a speaker, and the like. The voice input / output unit 80 outputs a predetermined voice from the speaker in response to a voice output command from the CPU 31a. In addition, the voice input / output unit 80 transmits input voice data corresponding to the voice input to the microphone to the CPU 31a. For example, the CPU 31a receives an instruction operation according to the received input voice data, and performs control such as switching each display image of the plurality of display units according to the received instruction operation.

  The vehicle 1 also has an entertainment system for displaying entertainment information on the display device 100. The entertainment system may use a part of the ADAS device 40 described above, and may further include a television (TV) tuner, a video / music playback unit, and the like. For example, the entertainment system supplies the TV information received via the TV tuner to the control unit 31. In addition, the entertainment system can play back video and music recorded on a recording medium such as a built-in memory, CD (Compact Disc), DVD (Digital Video Disk) and the like as a video / music playback unit. Such information (work title, author name, etc.) is supplied to the control unit 31. In addition, the video / music playback unit outputs the audio reproduced from the speaker of the audio input / output unit 80.

  When warning information is transmitted from the ADAS device 40 and a warning is generated, the control unit 31 causes the speaker of the voice input / output unit 80 to focus attention on the periphery of the vehicle 1. You may turn off the audio that was playing from.

(Power saving control processing)
Next, the power saving control process executed by the control unit 31 will be described with reference to FIG. The power saving control process is continuously executed, for example, when the display device 100 is powered on. At the start of the process, each of the plurality of display units (first to third display units 11 to 13) is assumed to be operating in the normal mode.

  When the power saving control process is started, first, the control unit 31 operates the meter 21, the HUD 22, and the CID 23 in the normal mode (step S1).

  Subsequently, the control unit 31 acquires gear information from the ECU 50, and determines whether or not the gear of the vehicle 1 is R (reverse) based on the acquired gear information (step S2).

  When the gear is R (step S2; Yes), the vehicle 1 can be identified as a parking estimation state that leads to parking, and it can be assumed that the importance of the surrounding situation of the vehicle 1 is greater than in the vehicle 1, and therefore the control unit 31. Sets the meter 21, the HUD 22, and the CID 23 (first to third display units 11 to 13) to the power saving mode (step S5). That is, the first to third display units 11 to 13 are configured to reduce at least one of the image display luminance and the frame rate as compared with the normal mode.

  Except for the meter 21 (first display unit 11), the image displayed in the normal mode may be erased and the display unit may be turned off in the power saving mode. In addition, even when automatic parking information indicating that automatic parking is being executed is acquired from the ECU 50 or the ADAS device 40 in step S2, the vehicle 1 can be identified as a parking estimation state that leads to parking. And the process of step S5 may be executed.

  When the gear is not R in step S2 (step S2; No), the control unit 31 is based on the vehicle speed information acquired from the vehicle speed sensor or the ECU 50 and the set low speed (for example, 20 km / h) set in the ROM 32 in advance. Then, it is determined whether or not the current vehicle speed of the vehicle 1 is equal to or lower than the set low speed (step S3).

  When the vehicle speed is equal to or lower than the set low speed (step S3; Yes), the control unit 31 acquires signal information from the ADAS device 40, and the traffic light in front of the vehicle 1 is a red signal based on the acquired signal information. (Step S4).

  When the vehicle speed is equal to or lower than the set low speed (step S3; Yes) and the traffic light is a red signal (step S4; Yes), the vehicle 1 can be identified as a stop estimated state where the vehicle 1 stops, and the vehicle 1 can Since the importance of the surrounding situation of 1 can be assumed to increase, the control unit 31 sets the meter 21, the HUD 22, and the CID 23 (first to third display units 11 to 13) to the power saving mode (step S5).

  The control unit 31 is based on the signal information from the ADAS device 40, not only when the traffic light ahead of the vehicle 1 is currently a red signal, but also for a predetermined period (for example, several seconds to Even if a red signal is generated within several tens of seconds), it may be determined that the traffic light is a red signal (step S4; Yes).

  On the other hand, when the vehicle speed is higher than the set low speed (step S3; No), or when the traffic light is not a red signal (step S4; No), it is not possible to identify the estimated stop state where the vehicle 1 reaches the stop. 31 does not set the first to third display units 11 to 13 to the power saving mode, and returns the process to step S1. In addition, if it becomes No in step S3 or S4 in the power saving mode, the first to third display units 11 to 13 return to the normal mode again in step S1. The power saving control process described above is continuously executed until the display device 100 is turned off, for example.

  When a parking estimation state and a stoppage estimation state that can be assumed to be more important than the inside of the vehicle 1 by increasing the power saving control process described above, a plurality of displays are displayed. Can be set in a power saving mode. Therefore, display according to the situation and power consumption can be suppressed.

  Note that switching from one of the normal mode and the power saving mode to the other is preferably performed with a fade in order to prevent the driver D from guiding the line of sight due to sudden switching of the display. For example, the control unit 31 may switch from the normal mode to the power saving mode by gradually erasing the image, gradually lowering the frame rate, or gradually lowering the display luminance. The control unit 31 may be switched from the power saving mode to the normal mode by gradually restoring the image, gradually increasing the frame rate, or gradually increasing the display luminance.

  The power saving control process may be configured to execute at least one of steps S2 to S4. Further, when the answer is Yes in step S4 and the estimated stop condition is specified, when the warning information is transmitted from the ADAS device 40, the control unit 31 causes the driver D to pay attention to the vicinity of the vehicle 1. Further, at least one of the first to third display units 11 to 13 may be turned off (the image is deleted), or the audio reproduced from the speaker of the audio input / output unit 80 may be turned off.

  In step S5, all of the meter 21, the HUD 22, and the CID 23 (first to third display units 11 to 13) may not be set to the power saving mode. For example, when the CID 23 or the HUD 22 displays information other than the vehicle information (for example, entertainment information or weather information), the power display mode may not be used for the information displayed. In addition, regarding the CID 23, since the passengers of the vehicle 1 can also enjoy the display content, switching from the normal mode to the power saving mode may be prohibited regardless of the display content.

  In addition, this invention is not limited by the above embodiment, a modified example, and drawing. Changes (including deletion of components) can be made as appropriate without departing from the scope of the present invention.

  In the above, an example in which the display of the meter 21, the HUD 22, and the CID 23 is an LCD is shown, but OLED (Organic Light Emitting Diodes) may be adopted. Further, the HUD 22 may use a reflective display device such as DMD (Digital Micromirror Device) or LCOS (Liquid Crystal On Silicon).

  Moreover, although the example which comprised three display parts (the 1st-3rd display parts 11-13) in the vehicle 1 was shown above, there should just be two or more display parts, even if it is two, it is 4 There may be more than one. Further, the number and arrangement of the plurality of display units and the information displayed by each are arbitrary.

  Further, the frame rate in the normal mode and the power saving mode is not limited to the above example, and is arbitrary. Further, the vehicle 1 on which the display device 100 is mounted is not limited to an automobile, and may be a motorcycle.

(1) The display device 100 described above includes a plurality of display units (first to third display units 11 to 13) that display images and a control unit 31. The control unit 31 includes a display control unit that performs display control of a plurality of display units, a traffic light that is positioned on the front road of the vehicle 1, and whether the vehicle 1 is in a stop estimated state where the vehicle 1 stops, or the vehicle 1 reaches parking. It has a function as a specific part which specifies whether it is in a parking presumed state. The display control unit changes at least one of the plurality of display units from the first mode (normal mode) to the second mode in response to the specifying unit specifying that the vehicle 1 is in the estimated stop state or the estimated parking state. Switching to (power saving mode), the second mode is a mode in which at least one of the display luminance of the image and the frame rate is reduced as compared with the first mode.
Since it did in this way, as above-mentioned, while performing the display according to a condition, power consumption can be suppressed.

(2) Specifically, the specifying unit is based on signal information from the outside of the vehicle 1 indicating the state of the traffic signal (for example, signal information that can be acquired by V2I communication wirelessly communicating with the roadside infrastructure), Identify what is in
(3) Further, the specifying unit may specify whether or not the vehicle is in the estimated stop state based on the signal information and the traveling speed of the vehicle 1 (for example, the control unit 31 performs steps S3 and S4 in the power saving control process). ).

(4) In addition, the display control unit displays the information other than the information related to the vehicle 1 (amusement information, weather information, etc.) among the plurality of display units. Even if it is specified by the specifying unit as being in the estimated state, it may not be switched from the first mode to the second mode. In this way, the passenger can enjoy the display contents.

(5) Specifically, the specifying unit determines that the vehicle 1 is based on reverse information indicating that the vehicle 1 is reverse (for example, gear information indicating that the gear of the vehicle 1 is R (reverse) from the ECU 50). Whether or not is in the parking estimation state is specified.
(6) Moreover, a display control part switches the display part of a 2nd aspect to a 1st aspect among several display parts according to the vehicle 1 becoming neither a stop estimated state nor a parking estimated state.

  In the above description, in order to facilitate understanding of the present invention, descriptions of known technical matters are omitted as appropriate.

DESCRIPTION OF SYMBOLS 100 ... Display apparatus 11 ... 1st display part, 12 ... 2nd display part, 13 ... 3rd display part 21 ... Meter (21a ... LCD, 21b ... Light source)
22 ... HUD (22a ... LCD, 22b ... light source)
23 ... CID (23a ... LCD, 23b ... light source)
30 ... Control device 31 ... Control unit (31a ... CPU, 31b ... GPU)
32 ... ROM
33 ... RAM
40 ... ADAS device 50 ... ECU
DESCRIPTION OF SYMBOLS 80 ... Voice input / output part 1 ... Vehicle, 2 ... Dashboard, 3 ... Steering wheel, 4 ... Windshield D ... Driver, E ... Eye box, L ... Display light, V ... Virtual image

Claims (6)

A display device mounted on a vehicle,
A plurality of display units for displaying images;
A display control unit that performs display control of the plurality of display units;
A specifying unit that specifies whether the vehicle is in a stop estimated state in which the vehicle reaches a stop at a traffic light located on a forward runway of the vehicle and whether the vehicle is in a parking estimated state in which the vehicle reaches parking;
The display control unit changes at least one of the plurality of display units from the first mode to the second mode according to the specification by the specifying unit when the vehicle is in the stop estimated state or the parking estimated state. Switch to mode,
The second aspect is an aspect in which at least one of the display brightness and the frame rate of the image is reduced as compared with the first aspect.
Display device. The specifying unit specifies whether the vehicle is in the estimated stop state based on signal information from outside the vehicle indicating the state of the traffic light.
The display device according to claim 1. The specifying unit specifies whether the vehicle is in the estimated stop state based on the signal information and the traveling speed of the vehicle.
The display device according to claim 2. The display control unit, for the display unit displaying information other than the information about the vehicle among the plurality of display units, informs the specifying unit when the vehicle is in the estimated stop state or the estimated parking state. Even if specified, the first mode is not switched to the second mode.
The display device according to claim 1. The specifying unit specifies whether the vehicle is in the parking estimation state based on reverse information indicating that the vehicle is moving backward.
The display device according to claim 1. The display control unit switches the display unit of the second mode to the first mode among the plurality of display units in response to the vehicle being out of the stop estimated state or the parking estimated state.
The display device according to claim 1.

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