JP2019081480A - Head-up display device - Google Patents

Abstract

To easily attract a visual attention to a virtual image or an actual object that is not recognized.SOLUTION: A display control device 20 controls an image display portion 10 on the basis of positional information obtained from an object information obtaining portion 30, thereby displaying a virtual image V at a position overlapping with or near an actual object 300. When a first condition that a gaze range GZ obtained by a gaze information obtaining portion 40 or a peripheral range GZa surrounding the gaze range GZ exists on the actual object 300 or the virtual image V is satisfied, visibility of the virtual image V is deteriorated, and the area of the peripheral range is changed according to a speed obtained by a vehicle speed obtaining portion 70 or/and a number of the specific actual objects 300 to be notified to a viewer which an object information obtaining portion 30 obtains.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a head-up display device that is used in a vehicle and causes a virtual image to be superimposed and viewed on the foreground of the vehicle.

  Detects the position of a real object (for example, another vehicle, pedestrian, falling object on the road, etc.) that exists in a real scene and may affect the operation of a vehicle, and a virtual image is displayed at a position visible superimposed on this real object There is a head-up display device that draws attention to a real object by displaying.

  The head-up display device of Patent Document 1 detects an amplitude, a period, a dwell time, etc. accompanying a minute movement of a cornea of a viewer, estimates a gaze of the viewer from these, and a virtual image in which the gaze of the viewer overlaps the real object If the virtual image is matched for a predetermined time, it is determined that the viewer has recognized this virtual image, and the virtual image is erased. That is, the display of a virtual image in which the line of sight is not directed is maintained, and the virtual image in which the line of sight is directed and recognized is lowered in visibility or appearance (including deletion of display). It makes it easy to give visual attention to an object.

JP 2017-39373 A

  However, the range (effective visual field) within which the viewer (in the virtual image or real object on the real scene) can be recognized by the viewer around that when the gaze is directed to one point (gaze) is the environment (speed, road conditions, etc.) It changes by Therefore, even when it is determined that the viewer has recognized the object, the effective field of view is actually narrow and can not be recognized. Conversely, it is determined that the viewer has not recognized the object. In fact, it may happen that the effective field of view is wide and recognized.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a head-up display device capable of facilitating visual attention to an unrecognized virtual image or a real object.

The present invention adopts the following means in order to solve the problems.
In the head-up display device of the present invention, when there is a gaze area of the viewer or a peripheral area surrounding the gaze area on the real object present in the foreground or on the virtual image displayed for the real object, the visibility of the virtual image By changing the size of the peripheral area according to the speed or / and the number of real objects to be notified, thereby reducing the visibility in accordance with the expansion or reduction of the effective visual field which changes according to the environment. The gist is that a virtual image can be determined and visual attention can be easily directed to an unrecognized virtual image or real object.

  According to a first aspect of the head-up display device of the present invention, an image display unit (10) capable of displaying a virtual image (V) superimposed on the foreground of a vehicle and a real object present in the foreground to be notified to a viewer An object information acquisition unit (30) for acquiring position information of (300), a gaze information acquisition unit (40) for acquiring a gaze range (GZ) of a viewer, and a vehicle speed acquisition unit (70) for acquiring the speed of the host vehicle And the image display unit (10) based on the position information acquired from the object information acquisition unit (30), the virtual image (V) is displayed at or near the position to be superimposed on the real object (300). ), And on the real object (300) or the virtual image (V), the gaze range (GZ) acquired by the gaze information acquisition unit (40) or the peripheral range surrounding the gaze range (GZ) A display control unit (20) for reducing the visibility of the virtual image (V) when the first condition including at least the presence of GZa) is satisfied; and the display control unit (20) controls the vehicle speed Depending on the speed acquired by the acquisition unit (70) and / or the number of real objects (300) present in the foreground to be notified to the viewer acquired by the object information acquisition unit (30), It changes the size.

  The first aspect determines the peripheral range surrounding the gaze range based on the gaze range of the viewer, and when there is a virtual image corresponding to the real object or the real object in the gaze range or the peripheral range, this real object Reduce the visibility of the corresponding virtual image. Also, based on the speed and the number of real objects to be notified (the virtual image should be displayed and emphasized), the enlargement / reduction of the effective field of view that can be recognized by the viewer is estimated to determine the virtual image that reduces the visibility. . That is, in an environment in which the effective visual field tends to be relatively wide, the range (peripheral area) for reducing the visibility of the virtual image is enlarged, and in an environment in which the effective visual field tends to be relatively narrow Reduce the range of reduction (peripheral range), reduce the visibility of the virtual image corresponding to the real object recognized by the viewer, and make it easier to direct visual attention to the real object that the viewer does not recognize relatively be able to.

  In the second aspect subordinate to the first aspect, the display control unit (20) may reduce the peripheral range when the speed acquired by the vehicle speed acquisition unit (70) is high.

  As the speed of the vehicle increases, the effective visual field range in which the viewer can recognize the object tends to be reduced. In the second aspect, when the speed of the vehicle increases, it is estimated that the effective visual field of the viewer is narrowed, and the range (peripheral range) in which the visibility of the virtual image is reduced is reduced. As a result, it is possible to reduce the frequency with which it is determined that the viewer has recognized the object and the visibility of the virtual image is reduced even though the effective field of view is narrowed and not recognized in practice.

  In addition, in a third aspect subordinate to the first or second aspect, the display control unit (20) is present in the foreground to be notified to the viewer, which is acquired by the object information acquisition unit (30). When the number of real objects (300) is large, the peripheral range may be reduced.

  According to the third aspect, when the number of objects to be viewed increases, the effective visual field range in which the viewer can recognize the objects tends to be reduced. In the third aspect, when the number of real objects present in the foreground to be notified to the viewer increases, it is estimated that the effective visual field of the viewer is narrowed, and the range (peripheral range) for reducing the visibility of the virtual image is reduced. . As a result, it is possible to reduce the frequency with which it is determined that the viewer has recognized the object and the visibility of the virtual image is reduced even though the effective field of view is narrowed and not recognized in practice.

  In the fourth aspect according to any one of the first to third aspects, the display control unit (20) notifies the viewer, who is acquired by the object information acquisition unit (30), by the gaze movement of the viewer. The real object (300) present in the foreground to be displayed on the real object (300) a first time after entering the gaze range (GZ) or the peripheral range (GZa) The visibility of the virtual image (V) may be gradually decreased.

  According to the fourth aspect, the gaze range or the peripheral range does not lower the visibility of the virtual image displayed corresponding to the real object immediately after the real object to be notified to the viewer is directed, After a first time (e.g. 3 seconds), the visibility begins to decline. Therefore, since the real object is emphasized by the virtual image until the first time passes from the beginning of visual recognition, the visual attention of the viewer tends to be directed. Then, when the time (first time) when the viewer will recognize the real object has passed, the visibility of the virtual image can be automatically reduced to make it less noticeable.

  In the fifth aspect according to any one of the first to fourth aspects, the display control unit (20) is configured to obtain the visual information acquired by the object information acquisition unit (30) by moving the real object (300). When the real object (300) present in the foreground to be notified to the person enters the gaze range (GZ) or the peripheral area (GZa), the real object (300) will be generated after a second time The visibility of the virtual image (V) displayed may be gradually reduced.

  According to the fifth aspect, the real object to be notified to the viewer does not lower the visibility of the virtual image displayed corresponding to the real object immediately after entering the gaze range or the peripheral range, After a second time (e.g. 5 seconds), the visibility begins to decline. Therefore, since the real object is emphasized by the virtual image until the second time passes from the beginning of visual recognition, the visual attention of the viewer tends to be directed. Then, when the time (second time) when the viewer will recognize the real object has passed, the visibility of the virtual image can be automatically reduced to make it less noticeable. Note that the time taken to recognize the real object when the real object enters the gaze range or the peripheral range is longer than the time taken to recognize the real object when the gaze range or the peripheral range is directed to the real object It is desirable that the second time be set longer than the first time in the fourth aspect.

It is a block diagram which shows functionally the composition of the head up display device concerning the embodiment of the present invention. It is a figure which shows the example of the virtual image which the head-up display apparatus of the said embodiment displays. It is a figure which shows the example of the virtual image which the head-up display apparatus of the said embodiment displays. It is a flowchart which shows operation | movement of the head-up display apparatus of the said embodiment.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. The present invention is not limited by the following embodiments (including the contents of the drawings). Of course, modifications (including deletion of components) can be added to the following embodiments. Further, in the following description, in order to facilitate understanding of the present invention, the description of known technical matters is appropriately omitted.

  FIG. 1 is a block diagram functionally showing the configuration of a head-up display device (hereinafter referred to as a HUD device) 100 in the present embodiment. As shown in the figure, the HUD device 100 includes an image display unit 10 for displaying a virtual image V, a display control unit 20 for controlling display of the image display unit 10, an object information acquisition unit 30, and a gaze information acquisition unit 40. , The vehicle state acquisition unit 50, and the communication unit 70.

  The image display unit 10 emits display light that causes the viewer to visually recognize the virtual image V. For example, as shown in FIG. 2, the display light is projected onto a projection portion such as a windshield glass WS or a combiner of a vehicle. By doing this, the virtual image V is viewed in a superimposed manner on the foreground 200 of the vehicle viewed through the projection portion. The image display unit 10 can display the virtual image V within the displayable range 101. The image display unit 10 acquires image data from a display control unit 20 described later, converts the acquired image data into display light, and outputs the display light.

  The display control unit 20 receives an external device (forward detection unit 31, line-of-sight detection unit 41) via the input / output interface (object information acquisition unit 30, gaze information acquisition unit 40, vehicle state acquisition unit 50, and communication unit 70). The position detection unit 51, the direction detection unit 52, the posture detection unit 53, and the cloud server (external server) 500 are communicably connected to each other. The input / output interface may include wired communication capabilities, such as, for example, a USB port, a serial port, a parallel port, an OBD II, and / or any other suitable wired communication port. The data cable from the vehicle is connected to the display control unit 20 via the communication unit 70. However, in other embodiments, the I / O interface may be, for example, Bluetooth® communication protocol, IEEE 802.11 protocol, IEEE 802.16 protocol, shared wireless access protocol, wireless USB protocol, and / or any other suitable Wireless communication unit using the wireless communication technology. The HUD device 100 acquires various information and image element data that is the source of the virtual image V from an external device via the input / output interface, and displays the virtual image V at a position determined by the display control unit 20. A part or all of the image element data is stored in the storage unit 22 of the display control unit 20 described later, and the display control unit 20 uses information obtained from the forward detection unit 31, the cloud server 500, the vehicle ECU 600, etc. In response, the image element data stored in the storage unit 22 may be read out to display the virtual image V.

  The object information acquisition unit 30 is an input interface for acquiring data (object information) including position information of a specific real object 300 present in the foreground 200, and, for example, forward detection including a camera or a sensor mounted on a vehicle Object information is acquired from the unit 31 and output to the display control unit 20.

  In addition, the object information acquisition unit 30 may acquire type information identifying the type of the real object 300 on the foreground 200, which is the result of the forward detection unit 31 observing the foreground 200 and analyzing it by an analysis unit (not shown). . Examples of the type of the real object 300 include, for example, an obstacle, a road sign, a road surface, and a building, but are present in the foreground 200 and are not limited thereto as long as they can be identified. That is, the object information acquisition unit 30 can acquire object information (position information of the real object 300, type information) and can output it to the display control unit 20.

(Another example of the object information acquisition unit)
As another example, the communication unit 70 capable of communicating with an external device may function as the object information acquisition unit 30. In other words, the communication unit 70 may acquire object information from a navigation system (not shown) provided in the vehicle, the cloud server 500, or the vehicle ECU 600. For example, the navigation system, the cloud server 500 and the vehicle ECU 600 (not shown) store, together with map information, position information, type information, and the like of real objects 300 such as roads and buildings. The position information and direction information of the HUD device 100 are output to the navigation system or / and the cloud server 500 or / and the vehicle ECU 600 via the communication unit 70, and the navigation system or / and the cloud server 500 or / and the vehicle ECU 600 Object information including position information and type information of a real object 300 present in the foreground 200 of the vehicle is output to the communication unit 70 based on the input position information of the vehicle or HUD device 100 and direction information.

  The gaze information acquisition unit 40 is an input interface for acquiring gaze information on a range (gaze range GZ) in which the viewer is gazing, and, for example, the gaze range GZ from the gaze detection unit 41 including a camera mounted on a vehicle. Are output to the display control unit 20. The gaze range GZ of the viewer is a region where the viewer is watching (gaze), including a visual point (gaze point), and is a certain range in which a person can usually gaze. Note that the method of setting the gaze range GZ of the viewer is not limited to this, and the gaze detection unit 41 may, for example, set a predetermined time (for example, as described in JP-A-2015-126451). , And a rectangular region including a plurality of visual points (gaze points) measured in one second) may be set as the gaze range GZ.

  The vehicle state acquisition unit 50 acquires information on the state (position, direction, attitude) of the vehicle. The vehicle state acquisition unit 50 acquires position information of the vehicle or the HUD device 100 detected by the position detection unit 51 formed of GNSS (Global Navigation Satellite System) or the like, and is detected by the direction detection unit 52 formed of a direction sensor. Direction information indicating the orientation of the vehicle or the HUD device 100 is acquired, and orientation information indicating the height of the vehicle from the road surface and / or the angle to the road surface detected by the attitude detection unit 53 including a height sensor or an acceleration sensor is acquired , Output to the display control unit 20.

  The display control unit 20 is an arrangement (display position) of an image element (an image serving as an origin of the virtual image V) indicated by the image element data input from the external database (the cloud server 500 and / or the vehicle ECU 600) or read from the storage unit 22. And a storage unit 22 for storing image element data, and a visibility adjustment unit 23 described later for adjusting the visibility of the virtual image V.

  The display control unit 20 receives the position information of the vehicle or the HUD device 100 acquired by the position information acquisition unit 50 and the direction information of the vehicle or the HUD device 100 acquired by the direction information acquisition unit 60 via the communication unit 70. It outputs to server 500 and / or vehicle ECU 600. Subsequently, the cloud server 500 and the vehicle ECU 600 control the display of the image element data of the virtual image V to be displayed on the HUD device 100 via the communication unit 70 based on the input position information of the vehicle or HUD device 100 and direction information. Output to unit 20. Note that as another example, the cloud server 500 and the vehicle ECU 600 communicate instruction data for instructing the virtual image V to be displayed on the HUD device 100 based on the input position information of the vehicle or HUD device 100 and the directional information. The image data may be output to the display control unit 20 via 70, and the display control unit 20 may read out the image element data stored in the storage unit 22 based on the input instruction data. Also, as another example, the cloud server 500 and the vehicle ECU 600 indicate the image element data of the virtual image V or the virtual image V to be displayed based on the position information of the vehicle or the HUD device 100 and other information different from the directional information. Command data may be output to the display control unit 20. The display control unit 20 may read out the image element data stored in the storage unit 22 based on the object information of the real object 300 acquired by the object information acquisition unit 30. Alternatively, the object information may be transmitted to the communication unit 70. Through the communication unit 70, the image element data of the virtual image V to be displayed on the HUD device 100 based on the object information input to the cloud server 500 and / or the vehicle ECU 600 and the cloud server 500 and the vehicle ECU 600. It may be output to the display control unit 20.

  FIG. 2 is a view showing a virtual image V displayed by the HUD device 100. As shown in FIG. The display position adjustment method of the display control unit 20 (display position adjustment unit 21) will be described below. The display position adjustment unit 21 sets the display position of the virtual image V related to the specific real object 300 in the foreground 200. The display position adjustment unit 21 arranges the image elements (determines the display position in the displayable range 101) based on the position information of the real object 300 acquired by the object information acquisition unit 30, and more specifically, the real object The virtual image V is arranged at a position to be viewed in a superimposed manner with the position 300 or a position to be viewed in the vicinity of the real object 300. In the example of FIG. 2A, the real object 300 is the first person 301, the second person 302, and the third person 303, and the display position adjustment unit 21 surrounds the first person 301. The virtual image V arranged on the virtual image V, the virtual image V arranged to surround the second person 302, and the virtual image V arranged to surround the third person 303 are displayed.

  FIG. 3 is a view showing a state in which the visibility of the virtual image V is changed according to the position of the gaze range GZ of the viewer. Below, the visibility adjustment method of the display control part 20 (visibility adjustment part 23) is demonstrated. The visibility adjustment unit 23 is the gaze range GZ acquired by the gaze information acquisition unit 40, the coordinate system of the image element (virtual image V) already displayed by the image display unit 10, and the real object acquired by the object information acquisition unit 30. The position information (object information) of 300 etc. is input and it is judged whether the virtual image V or the real object 300 is included in the peripheral range GZa which is the area surrounding the gaze range GZ, and if not, the virtual image V is When the display mode is included, the virtual image V is made less visible (not displayed) than the normal display mode. Note that to reduce the visibility specifically means, for example, to reduce the luminance, to reduce the lightness, to reduce the saturation, to change the hue to one with a low attractiveness, to configure the virtual image V And reducing the density of pixels to be displayed. For example, as shown in FIG. 3A, the visibility adjustment unit 23 has a grid coordinate system 400 obtained by dividing the foreground 200 into five in the left and right direction and into five in the upper and lower direction. The grid area around the grid area (the area surrounded by the grid lines) to which the acquired gaze range GZ belongs is set as the peripheral area GZa. At this time, the visibility adjustment unit 23 determines that the first person 301 and the third person 303 are included in the surrounding area GZa, and the virtual image V corresponding to the first person 301 and the third person 303 is The virtual image V is displayed only for the second person 302 present outside the peripheral range GZa while hiding the image. In addition, the setting method of the periphery range GZa is not limited to this, The periphery range GZa may be set to the preset rectangular area | region centering on the gaze range GZ. Note that the gaze range GZ may be arranged at an eccentric position with respect to the peripheral range GZa.

  Further, the visibility adjustment unit 23 acquires the number of specific real objects 300 to be notified to the viewer from the object information acquisition unit 30, and when the number of specific real objects 300 exceeds a predetermined threshold, FIG. As shown in (b), the size of the peripheral range GZa to be added to the gaze range GZ of the viewer is reduced. Further, the visibility adjustment unit 23 acquires the speed of the host vehicle from the communication unit (vehicle speed acquisition unit) 70, and when the host vehicle speed exceeds a predetermined threshold, as shown in FIG. The width of the peripheral range GZa to be added to the gaze range GZ of the person may be reduced. At this time, the visibility adjustment unit 23 determines that only the third person 303 is included in the surrounding area GZa, and hides the virtual image V corresponding to the third person 303, and exists outside the surrounding area GZa. The virtual image V is displayed only for the first person 301 and the second person 302.

  Next, the processing of the HUD device 100 according to the characteristic part of the present embodiment will be described using the flowchart shown in FIG. This process is repeatedly executed when the vehicle or the HUD device 100 is activated and the specific real object 300 is positioned within the displayable range 101.

First, in step S1, the display control unit 20 includes object information including at least position information of a specific real object 300 to be notified to a viewer among real objects 300 present in the foreground 200 via the object information acquisition unit 30. To get The object information is generated by the front detection unit 31 including a camera, a sensor, or the like detecting a specific real object 300 from the foreground 200, or the cloud server 500 or / based on vehicle position information and direction information. And generated by the vehicle ECU 600.

In step S2, the display control unit 20 determines whether the position of the real object 300 input in step S1 is included in the displayable range 101 of the HUD device 100. The display control unit 20 grasps at which position in the displayable range 101 the real object 300 is positioned based on the position information of the real object 300 acquired in step S1. Since the position of the real object 300 in the displayable range 101 of the HUD device 100 differs depending on the eyepoint of the viewer, the eyepoint of the viewer is measured or estimated to gaze at the displayable range 101 from this eyepoint It is preferable to specify the position of the real object 300 at the time. For example, a standard eye point may be estimated based on the physique, body shape, driving posture, standard gaze direction, etc. of the viewer sitting in the driver's seat, and further, the seat slide position of the driver's seat, reclining Angles and the like may be detected, and standard eye points may be corrected using the detected data. Then, the position of the real object 300 in the displayable range 101 may be grasped from the relative positional relationship between the estimated eye point and the real object 300.

  If the position of the real object 300 is included in the displayable range 101 of the HUD device 100 (YES in step S2), the display control unit 20 receives the gaze information acquisition unit 40 from the sight line detection unit 41 in step S3. The gaze range GZ of the viewer is acquired, and in step S4, a rectangular area having the acquired gaze range GZ as a center is set as the peripheral range GZa. The visibility adjustment unit 23 acquires the number of specific real objects 300 to be notified to the viewer from the object information acquisition unit 30 and / or the speed of the host vehicle from the communication unit (vehicle speed acquisition unit) 70, and When the number of real objects 300 exceeds a predetermined threshold or the speed of the host vehicle exceeds a predetermined threshold, the width of the peripheral range GZa to be added to the gaze range GZ of the viewer is reduced.

  In step S5, the display control unit 20 (visibility adjusting unit 23) determines whether the virtual image V is included in the peripheral range GZa, and adjusts the visibility of the virtual image V based on the determination result. When the display control unit 20 (display position adjustment unit 21) determines that the visibility adjustment unit 23 includes the specific real object 300 or the virtual image V in the peripheral range GZa, the virtual image V or the virtual image V indicates It is determined that the viewer can recognize the real object 300, and the visibility of the virtual image V is reduced and displayed (step S6).

On the other hand, when the display control unit 20 (display position adjustment unit 21) determines that the visibility adjustment unit 23 determines that the specific real object 300 is present in the display area 101 outside the peripheral range GZa, the virtual object V instructs It is determined that the viewer can not recognize 300, and the virtual image V is displayed in a normal display mode (a display mode in which the visibility is not reduced) (step S6).
[Modification]

  The present invention is not limited by the above embodiments and drawings. It is possible to add changes (including deletion of components) to the embodiment and the drawings as appropriate without departing from the scope of the present invention. Below, an example of a modification is described.

  The display control unit 20 is the first time since the specific real object 300 to be notified to the viewer acquired by the object information acquisition unit 30 enters the gaze range GZ or the peripheral range GZa by the gaze movement of the viewer. After (for example, 3 seconds), the visibility of the virtual image V displayed on the real object 300 may be gradually reduced. According to this, immediately after the real object to be notified to the viewer is directed, the gaze range or the peripheral range does not lower the visibility of the virtual image displayed corresponding to the real object, but the first After time, begin to reduce visibility. Therefore, since the real object is emphasized by the virtual image until the first time passes from the beginning of visual recognition, the visual attention of the viewer tends to be directed. Then, when the time (first time) when the viewer will recognize the real object has passed, the visibility of the virtual image can be automatically reduced to make it less noticeable.

  Further, the display control unit 20 moves the real object 300 so that the real object 300 present in the foreground to be notified to the viewer acquired by the object information acquisition unit 30 enters the gaze range GZ or the peripheral range GZa. After the second time period (e.g., 5 seconds), the visibility of the virtual image V displayed on the real object 300 may be gradually reduced. According to this, it is not necessary to immediately reduce the visibility of the virtual image displayed corresponding to the real object immediately after the real object to be notified to the viewer enters the fixation range or the peripheral range, and the second After time, begin to reduce visibility. Therefore, since the real object is emphasized by the virtual image until the second time passes from the beginning of visual recognition, the visual attention of the viewer tends to be directed. Then, when the time (second time) when the viewer will recognize the real object has passed, the visibility of the virtual image can be automatically reduced to make it less noticeable. Note that the time taken to recognize the real object when the real object enters the gaze range or the peripheral range is longer than the time taken to recognize the real object when the gaze range or the peripheral range is directed to the real object It is desirable that the second time be set longer than the first time.

10: image display unit 20: display control unit 21: display position adjustment unit 22: storage unit 23: visibility adjustment unit 30: object information acquisition unit 31: forward detection unit 40: gaze information acquisition unit 41: sight line detection unit 50: Position information acquisition unit 51: Position detection unit 60: Direction information acquisition unit 61: Direction detection unit 70: Communication unit (object information acquisition unit, vehicle speed acquisition unit)
100: HUD device (head-up display device)
101: displayable range 200: foreground 300: real object 500: cloud server 600: vehicle ECU
GZ: gaze range GZa: peripheral range V: virtual image WS: windshield glass

Claims (5)

An image display unit (10) capable of displaying a virtual image (V) superimposed on the foreground of a vehicle;
An object information acquisition unit (30) for acquiring position information of a real object (300) present in the foreground to be notified to a viewer;
A gaze information acquisition unit (40) for acquiring a gaze range (GZ) of a viewer;
A vehicle speed acquisition unit (70) for acquiring the speed of the host vehicle;
By controlling the image display unit (10) based on the position information acquired from the object information acquisition unit (30), the virtual image (V) is displayed at or near the position superimposed on the real object (300) And the peripheral range (GZa) surrounding the gaze range (GZ) acquired by the gaze information acquisition unit (40) or the gaze range (GZ) on the real object (300) or the virtual image (V). A display control unit (20) that reduces the visibility of the virtual image (V) when the first condition including at least the first condition is satisfied;
The display control unit (20) is the real object present in the foreground to be notified to the viewer that the speed acquired by the vehicle speed acquisition unit (70) or / and the object information acquisition unit (30) acquired. A head-up display device, wherein the width of the peripheral area is changed according to the number of (300). The display control unit (20) reduces the peripheral range when the speed acquired by the vehicle speed acquisition unit (70) is high.
The head-up display device according to claim 1, The display control unit (20) reduces the peripheral range when the number of real objects (300) present in the foreground to be notified to the viewer to be acquired by the object information acquisition unit (30) is large. ,
The head up display device according to claim 1 or 2, characterized in that: The display control unit (20) is configured such that the real object (300) present in the foreground to be notified to the viewer acquired by the object information acquisition unit (30) by the gaze movement of the viewer is the gaze range (GZ) or after a first time after entering the peripheral area (GZa), the visibility of the virtual image (V) displayed for the real object (300) is gradually reduced
The head-up display device according to any one of claims 1 to 3, characterized in that: The display control unit (20) causes the real object (300) present in the foreground to be notified to the viewer, which is acquired by the object information acquisition unit (30) by the movement of the real object (300), The visibility of the virtual image (V) displayed for the real object (300) is gradually reduced after a second time after entering the gaze range (GZ) or the peripheral range (GZa) ,
The head-up display device according to any one of claims 1 to 4, characterized in that:

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