JP2019010965A - Head-up display device - Google Patents

Abstract

To provide a head-up display device which safely displays easy-to-see information necessary for a driver.SOLUTION: A head-up display device 1 includes a vehicle information acquisition part 10 which acquires vehicle information 4 of a vehicle by a device installed in the vehicle 2, an image display device 30 which generates a projected image, and a control part 20 which determines an image generated by the image display device 30 based on the vehicle information 4 acquired by the vehicle information acquisition part 10. The control part 20 classifies the vehicle information 4 into a plurality of event information, changes and determines an image content generated by the image display device 30 in response to a change of the acquired event information, and changes and sets a size of a region for displaying the image content.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a head-up display device suitable for being mounted on a vehicle or the like and displaying various video information.

  In recent years, a vehicle video display device (so-called head-up display device (hereinafter referred to as HUD)) that displays various types of information on a windshield (wind shield) of a vehicle is put to practical use as one of the technologies for displaying images superimposed on real space. It has become. For example, by providing information for a driver as video information (display content) to be displayed, a driving operation of the vehicle can be supported. For example, Patent Document 1 discloses a configuration in which the video display position is moved in the left-right direction in accordance with the moving state of the vehicle and the driving operation of the driver. As for the size of the display area, for example, there are a small screen HUD that displays an image only in a traveling lane, and a large screen HUD that displays an image also above a lane adjacent to the traveling lane and the viewpoint position, for example. is there.

JP 2001-301486 A

  The small screen HUD displays information indicating the state of the vehicle in a narrow area, so it does not interfere with normal driving, but the area is narrow to display additional guidance information such as when turning right or left. It becomes impossible to display necessary information.

  In the large screen HUD, it is possible to display a virtual image superimposed on the foreground (augmented reality display) in addition to information indicating the state of the vehicle. However, displaying a video constantly in a wide display area hinders driving. It can be. In addition, when viewing information displayed near the periphery of the large screen HUD, viewpoint movement occurs, which may lead to dangerous driving.

  Conventionally, since the size of the display area of the HUD has been fixed, it has been impossible to display information in an appropriate (easy to see) display area size in a timely manner according to the driving state. Patent Document 1 describes moving the display position to the left and right, but does not describe changing the size of the display area.

  An object of the present invention is to provide a head-up display device that displays information necessary for a driver in an easy-to-see manner and safely.

  The head-up display device according to the present invention includes a vehicle information acquisition unit that acquires vehicle information of a vehicle by a device installed in the vehicle, a video display device that generates a projected image, and vehicle information acquired by the vehicle information acquisition unit. A control unit that determines a video to be generated by the video display device, and the control unit classifies the vehicle information into a plurality of event information, and changes the acquired event information to the video display device. The video content to be generated is changed and determined, and the size of the area for displaying the video content is changed and set.

  Therefore, in order to change the size of the display area, the control unit determines which area of the coordinate management table in which the range of the display area after the change is described with coordinate values or the display area divided into a plurality of areas to be effective. Is stored in the divided area management table.

  ADVANTAGE OF THE INVENTION According to this invention, the head-up display apparatus which displays easily and can display required information safely can be provided.

The schematic diagram explaining the outline | summary of the head-up display apparatus (HUD) mounted in the vehicle. The schematic diagram which shows the video display operation | movement by HUD. The figure which shows the example of the hardware constitutions which concern on acquisition of vehicle information. The block diagram which shows the structure of the control system of HUD. The figure which shows the example of a display when the size of a display area is small. The figure which shows the example of a display when the size of a display area is large. The figure which shows the case where a display area is expanded to the left-right direction. The figure which shows the case where a display area is expanded to an up-down direction. The figure which shows the other example which expands a display area. The figure explaining the method of managing a display area by a coordinate. The figure explaining the method to divide | segment and manage a display area. The figure which shows the example of area | region size switching according to the driving | running | working position of a vehicle. The figure which shows the example of area | region size switching according to the steering angle of a vehicle. The figure which shows the example of area | region size switching according to a driver | operator's viewpoint position. The figure which shows the case where an area | region size is returned in steps. The figure which shows the example of area | region size switching according to a driving | running | working state. The figure which shows an example of an event management table. The figure which shows an example of an area | region size change table. The flowchart which shows the basic operation (initial operation) of HUD. The flowchart which shows the basic operation | movement (normal operation | movement) of HUD. The flowchart which shows the detail of a display area size change process.

  An embodiment of a head-up display device (hereinafter referred to as HUD) according to the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic diagram for explaining an outline of a HUD mounted on a vehicle. The HUD 1 is mounted on the vehicle 2 and projects an image generated by the image display device 30 onto the windshield 3 (also referred to as a windshield) of the vehicle 2 through mirrors 51 and 52. The image reflected by the windshield 3 enters the eyes of the driver, and the driver visually recognizes the image from the HUD. The video to be displayed includes information related to driving and supports driving operation. Inside the HUD 1, a vehicle information acquisition unit 10 that acquires various types of vehicle information 4, a control unit 20 that generates video information to be displayed based on the vehicle information and controls the video display device 30, and is not shown here. A mirror driving unit, a speaker for outputting voice information to the driver, and the like are included. The vehicle information 4 includes vehicle speed information indicating the driving state of the host vehicle, steering wheel steering angle information, camera video information, and the like.

  Here, the member to be projected is not limited to the windshield 3 and may be another member such as a combiner as long as the image is projected. The video display device 30 includes a projector having a backlight, an LCD (Liquid Crystal Display), and the like. A self-luminous VFD (Vacuum Fluorescent Display) or the like may be used.

  FIG. 2 is a schematic diagram showing an image display operation by the HUD. A video for display is emitted from the video display device 30 installed at the lower part of the dashboard of the vehicle 2. The image is reflected by the first mirror 51 and the second mirror 52 (for example, a concave mirror, a free-form surface mirror, a mirror having an optical axis asymmetric shape, etc.) and projected toward the windshield 3. The first mirror 51 is fixed, and the second mirror 52 can be rotated by a mirror driving unit.

  The image converged and projected from the mirror 52 is reflected by the windshield 3 and incident on the driver's eyes 5 to form an image on the retina so that the image can be visually recognized. At that time, the driver sees the virtual image 9 present in front of the windshield 3.

  FIG. 3 is a diagram illustrating an example of a hardware configuration related to acquisition of the vehicle information 4. The acquisition of the vehicle information 4 is performed by an information acquisition device such as various sensors installed in the vehicle 2 under the control of an electronic control unit (ECU) 21 in the control unit 20, for example. Hereinafter, the function of each device will be described. Note that it is not always necessary to include all these devices in order to execute the operation of the present embodiment, and other types of devices may be added as appropriate.

  The vehicle speed sensor 101 acquires speed information of the vehicle 2. The shift position sensor 102 acquires current gear information of the vehicle 2. The steering wheel angle sensor 103 acquires steering wheel angle information. The headlight sensor 104 acquires lamp lighting information related to On / Off of the headlight. The illuminance sensor 105 and the chromaticity sensor 106 acquire external light information. The distance measuring sensor 107 acquires distance information between the vehicle 2 and an external object. The infrared sensor 108 acquires infrared information related to the presence / absence and distance of an object at a short distance of the vehicle 2. The engine start sensor 109 detects engine On / Off information.

  The acceleration sensor 110 and the gyro sensor 111 acquire acceleration gyro information including acceleration and angular velocity as information on the posture and behavior of the vehicle 2. The temperature sensor 112 acquires temperature information inside and outside the vehicle. The wireless transceiver 113 for road-to-vehicle communication is based on road-to-vehicle communication between the vehicle 2 and the roadside machine, and the wireless transceiver for vehicle-to-vehicle communication 114 is based on vehicle-to-vehicle communication between the vehicle 2 and other nearby vehicles. The information around the vehicle 2 is acquired.

  The camera (inside the vehicle) 115 and the camera (outside the vehicle) 116 respectively capture images of the conditions inside and outside the vehicle to obtain camera video information (inside / outside the vehicle). The camera (inside the vehicle) 115 shoots, for example, the driver's posture, viewpoint position, movement, and the like. By analyzing the obtained image, it is possible to acquire information such as the driver's fatigue status and eye height, for example. In addition, the camera (outside the vehicle) 116 captures a situation around the vehicle 2 such as the front or rear. By analyzing the obtained image, for example, it is possible to grasp the presence of moving objects such as other vehicles and pedestrians in the vicinity, buildings and topography, road surface conditions (rain, snow, freezing, unevenness, etc.) It is.

  A GPS (Global Positioning System) receiver 117 and a VICS (Vehicle Information and Communication System: registered trademark (hereinafter the same)) receiver 118 receive GPS signals, respectively. GPS information and VICS information obtained by receiving the VICS signal are acquired. By acquiring such information and collating it with map data, map information indicating the position of the vehicle 2 and the traveling direction can be generated.

  FIG. 4 is a block diagram showing the configuration of the control system of the HUD 1 in this embodiment. Various types of vehicle information 4 are input to the vehicle information acquisition unit 10 and sent to the control unit 20. In particular, information relating to the operation of the present embodiment includes vehicle speed information, steering wheel steering angle information, in-car / outside-camera image information, GPS information, and the like.

  An electronic control unit (ECU) 21 in the control unit 20 controls various operations on the video display device 30 based on the input vehicle information 4. The video display device 30 includes a light source 31 such as an LED or a laser, an illumination optical system (not shown), and a display element 32 such as a liquid crystal element, and emits video light generated by the display element 32 toward a mirror 52. .

  The main functions in the control unit 20 are as follows. The audio output unit 22 generates an audio signal to the speaker. The nonvolatile memory 23 stores a program executed by the ECU 21, and the memory 24 stores video information and various control information.

  The light source adjustment unit 25 controls the light source 31 in the video display device 30. The distortion correction unit 26 corrects distortion of the video signal to be displayed, and the display element driving unit 27 drives the display element 32 in the video display device 30 based on the corrected video signal. The mirror adjustment unit 28 outputs a drive signal to the mirror drive unit in order to adjust the position and orientation of the mirror 52.

  The content display control unit 33 controls the video (content) displayed on the video display device 30. The display area size control unit 34 controls the size of a video area displayed on the video display device 30. The size of the display area is the size of the display area of the virtual image 9 that the driver visually recognizes through the windshield 3 in FIG.

  Here, the operations of the content display control unit 33 and the display area size control unit 34 are linked to each other. When the type or number of display contents is increased or decreased, the size of the display area is enlarged or reduced accordingly. is there. That is, the content drawing area is enlarged / reduced in the area that can be displayed by the video display device 30, and the scale of the same content is not enlarged / reduced. Hereinafter, the processing performed by the content display control unit 33 and the display area size control unit 34 in this embodiment is simply referred to as “display area size change processing”.

First, problems when the size of the display area is fixed will be described.
FIG. 5A is a diagram illustrating a display example when the size of the display area is small (small screen HUD). A landscape (foreground) that can be seen forward through the windshield 3 is shown. (A) shows a display area, and a small screen display area 61 is set in accordance with the viewpoint position 62 of the driver.

  (B) shows a display example of video content. For example, an object 63 indicating the vehicle speed and the traveling direction is displayed in the display area 61. This is sufficient to know the current state of the vehicle, but it is difficult to add more information because the display area is limited. For example, it is difficult to add and display a guide object 64 indicating where to make a right turn when making a right turn. Therefore, information useful for driving operation cannot be displayed sufficiently.

  FIG. 5B is a diagram illustrating a display example when the size of the display area is large (large screen HUD). (A) shows a display area, and a large screen display area 65 is set in accordance with the viewpoint position 66 of the driver.

  (B) shows a display example of video content. For example, in addition to displaying the vehicle speed and destination guidance object 67 in this display area 65, an object 68 is superimposed to emphasize a pedestrian in the foreground. Can be displayed. However, as a result of having too many objects to display, the driver's field of view may be obstructed, and it may be difficult to concentrate on driving. Further, compared to the small screen HUD of FIG. 5, the object displayed near the periphery of the display area 65 is far from the viewpoint position 66 during driving, so that the viewpoint movement when viewing the object is increased, resulting in dangerous driving. There is a risk of being connected.

  Thus, when the size of the display area is fixed, it is difficult to display useful and necessary information according to the driving situation in an easy-to-see manner and safely. In contrast, in this embodiment, the size of the display area can be changed. Thereby, the advantages of the small screen HUD and the large screen HUD can be switched and used. This will be specifically described.

First, examples of various enlarged patterns of the display area size are shown in FIGS.
FIG. 6A is a diagram illustrating a case where the display area is enlarged in the left-right direction. With respect to the reference size of (1), (2) is expanded in the left direction, (3) is expanded in the right direction, and (4) is expanded in the left-right direction. The broken line indicates the shape and position of the reference size before enlargement.

  FIG. 6B is a diagram showing a case where the display area is enlarged in the vertical direction. With respect to the reference size of (1), (2) is expanded upward, (3) is expanded downward, and (4) is expanded vertically.

  FIG. 6C is a diagram showing another example of enlarging the display area. (1) is an enlargement in all directions, (2) is an enlargement in the upper left direction, and (3) is an enlargement in the right direction and then downward and an L shape.

  The above is an example of the enlargement pattern, and the enlargement width may be halfway and the image may be enlarged step by step. In the above example, the reference size is the small screen, but the same is true when the size is reduced using the large screen as the reference size.

FIG. 7 is a diagram for explaining a method of managing the display area by coordinates.
(A) is an example in which a rectangular display area is expressed in XY coordinates. For example, the display area 71 in the small screen can be represented by coordinates of four corners with the origin coordinates being (35, 25). In addition, using the same coordinate system, the display area 72 in the large screen can be represented by coordinates of four corners with the origin coordinates being (0, 0).

  (B) is a coordinate management table, and an area can be set and managed by the origin coordinate, the maximum value of the X coordinate, and the maximum value of the Y coordinate. This coordinate management table is stored in the memory 24.

  FIG. 8 is a diagram illustrating a method of dividing and managing the display area. The coordinate management in FIG. 7 is effective when the area is rectangular, but is not suitable for an L-shaped shape such as (3) in FIG. 6C. Therefore, as shown in (a), the maximum displayable area is divided into a plurality of areas (in this example, 3 × 3 = 9 divisions).

  Then, as shown in (b), a flag (valid / invalid flag) indicating whether or not each of the divided areas A to I is used for display is added and managed by the divided area management table. The coordinates of the divided areas A to I are also described in the divided area management table. In this way, the display area can correspond to any shape other than a rectangle. This divided area management table is also stored in the memory 24.

Hereinafter, a change in the size of the display area according to the traveling state of the vehicle and the state of the driver will be described with a specific example. FIG. 9 is a diagram illustrating an example of region size switching according to the traveling position of the vehicle. The vehicle traveling position (plan view) is shown on the upper side of the drawing, and the display screen viewed from the driver's seat is shown on the lower side. For example, the case where the own vehicle 81 makes a left turn at a front intersection 82 is assumed.

(A) is the case where the own vehicle 81 is traveling in front of the intersection 82, and the distance information to the intersection 82 and a straight arrow indicating the traveling direction are displayed in the reduced display area 83a.
(B) is a case where the host vehicle 81 approaches the intersection 82, and an arrow indicating the left turn position is additionally displayed in the display area 83b whose size is enlarged in the left direction, and the destination guidance is performed.
(C) is a case where the vehicle 81 has completed a left turn, and a straight arrow indicating the traveling direction is displayed in the display area 83c whose size has been returned to the original reduced size.

  In addition, the positional relationship of the own vehicle 81 with respect to the intersection 82 can be determined from vehicle camera image information and map information (GPS information). Accordingly, information necessary for the driver for the left turn operation can be displayed in a size that does not hinder driving.

  FIG. 10A is a diagram illustrating an example of region size switching according to the steering angle of the vehicle. For example, when the handle 84 is turned to the left, the size of the display area 85 is enlarged in the left direction. At that time, according to the steering angle (the amount by which the steering wheel is turned), the enlargement width is switched stepwise from 85a → 85b → 85c, and the number of left turn arrows in the region is increased. The steering angle is detected by the rotation angle of the steering wheel. Thereby, a realistic display following the steering wheel operation can be performed to the driver.

  FIG. 10B is a diagram illustrating an example of region size switching according to the viewpoint position of the driver. For example, when the handle 84 is turned to the left, the size of the display area 87 is enlarged in the left direction. At that time, in accordance with the positions a, b and c of the driver's viewpoint 86, the enlargement width is switched stepwise as 87a → 87b → 87c, and the position of the left turn arrow in the region is moved. The viewpoint position of the driver is detected by an in-vehicle camera. Thereby, the realistic display which followed the driver | operator's viewpoint movement can be performed.

  FIG. 10C is a diagram illustrating a case where the region size is restored in stages. For example, when it is determined that the left turn operation is completed and the driver's viewpoint position returns to the front direction, the enlarged area size is reduced to the display area 88 of the original size, and the left turn arrow displayed in the area is displayed. to erase. At that time, size reduction (arrow deletion) is not performed instantaneously, but a time difference is provided. That is, the display is easy to see for the driver by gradually reducing and erasing the area in the order of 88c → 88b → 88a. However, when there is a time difference that hinders the next driving operation, such as when making a right turn immediately after a left turn, it is switched instantaneously.

FIG. 11 is a diagram illustrating an example of region size switching according to the traveling state.
In (a), when traveling on a highway or a plurality of lanes and the traveling road width is wide, the road is expanded leftward or rightward. (B) When the vehicle speed is accelerated / decelerated, the driver looks far away during acceleration, so the size is increased upward, and when decelerating, the driver looks closer, so it shrinks return.

  (C) is a case where a pedestrian or an obstacle is detected. The object 68 for emphasizing the detected object is enlarged to be displayed at the detected position. In addition, the size can be switched according to the position of other vehicles and the driving environment (brightness, weather conditions).

  The above-described change in the size of the display area is set in advance in a relationship between the driving state of the vehicle and the driver's state (hereinafter referred to as event information) and the display area size suitable for this, and is held in the management table.

  FIG. 12 is a diagram illustrating an example of an event management table. In the event management table, types of event information are distinguished by ID numbers, and states 1 to 3 that can be taken for each event type (ID) are managed by bit data. For example, when an object is detected in the left front direction, ID = 1 and bit data = (010) are represented. When the handle is turned to the left, ID = 3 and bit data = (100).

  FIG. 13 is a diagram illustrating an example of the area size change table. How to change the display area size is determined for each event type (ID) and its state (bit data) in FIG. For example, when ID = 1 and bit data = (100) (when an object is detected in front of the front), if the current size is an enlarged size, the size is changed to a reduced size. When ID = 2 and bit data = (010) (when the map information is a left turn), the size is enlarged in the left direction.

  A plurality of event information may occur simultaneously. Since the change instruction of the area size for each event information may be different, it is preferable to provide a priority for the event ID. Alternatively, it is determined by combining other event information. For example, when the map information (ID = 2) is a left turn (010) but the steering information (ID = 3) is in the right direction (010), and the instructions of the two contradict each other, the driver's viewpoint position (ID = 4) If it is in the left direction (010), it is determined that “turn left”.

  14A and 14B are flowcharts showing the basic operation of the HUD. FIG. 14A shows an initial operation, and FIG. 14B shows a normal operation. The normal operation in FIG. 14B includes a display area size changing process. The following processing is controlled by an electronic control unit (ECU) 21 of the control unit 20.

  In the initial operation (S200) of FIG. 14A, when a signal of the power source (ignition) On is received by the engine start sensor 109 (S201), the vehicle information acquisition unit 10 acquires the vehicle information 4 (S202). First, an appropriate brightness level is calculated from external light information from the illuminance sensor 105 (S203). The light source adjustment unit 25 is controlled to set the brightness level of the light source 31 (S204).

  Information selected by the driver (for example, current vehicle speed information) is extracted from the acquired vehicle information 4, and an image to be displayed is determined (S205). The distortion correction unit 26 corrects the image distortion generated in the projection optical system with respect to the display image (S206). The display element drive unit 27 supplies a drive signal to the display element 32 (S207). It is determined whether or not a HUD display On signal has been received (S208), and the system waits until an On signal is received (S209). When the On signal is received, the light source 31 of the video display device 30 is turned on, and the video projection display, that is, the normal operation of the HUD is started (S210).

  In the normal operation (S210) of FIG. 14B, the vehicle information 4 is continuously acquired via the vehicle information acquisition unit 10 (S211), and the brightness level adjustment process of the display image is performed according to the current external light information (S212). ).

  Next, the content display control unit 33 changes / determines the content of the video (content) to be displayed according to the current driving state of the vehicle and the driver's state (event information) (S213). For example, when making a right or left turn at this intersection, a guide object indicating the position to turn right or left is added, and when an obstacle is found, an object that emphasizes this is added. When these events are finished, the object used for this event is deleted.

Further, the display area size control unit 34 changes the size of the display area of the video in accordance with the current traveling state of the vehicle and the state of the driver (event information) (S214). That is, in association with the display content in S213, it is determined how much the display area size should be enlarged or reduced in which direction.
Details of the content change / determination process (S213) and the display area size change process (S214) will be described later.

  The display element driving unit 27 updates the display image by controlling the display element (S215). When the mirror adjustment signal is received, the mirror adjustment unit 28 performs the adjustment process of the mirror 52 (S216). It is determined whether or not a HUD display Off signal has been received (S217), and the processing from S211 is repeated until the Off signal is received. When the Off signal is received, the light source 31 of the video display device 30 is turned off, and the video projection display is terminated (S218).

  FIG. 14C is a flowchart illustrating details of the display area size changing process. The display area size change process (S220) includes the content change / decision process (S213) and the display area size change process (S214) in FIG. 14B. This process is performed in cooperation with the content display control unit 33 and the display area size control unit 34.

  First, the display area size control unit 34 refers to the memory 24 and acquires the current display area size (S221). That is, the current display area setting in the coordinate management table of FIG. 7 or the divided area management table of FIG. 8 is acquired. Then, it is determined from the vehicle information acquired in S211 whether or not there is a change in event information (vehicle running state or driver state) (S222). If there is no change in the event information, the process proceeds to S230 and the current display state is continued.

  If there is a change in the event information, the event management table in FIG. 12 is referred to, and the ID and state (bit data) of the corresponding event are acquired (S223). For example, when the current event information is in a state of turning left by map information, event ID = 2 and bit data = (010) are acquired.

  Next, the area size change table in FIG. 13 is referred to, and an area size change instruction corresponding to the event ID and bit data acquired in S223 is acquired (S224). For the event information described above, an instruction “enlarge size in the left direction” is acquired from the table of FIG.

  Next, the area size change instruction acquired in S224 is compared with the current display area size acquired in S221 to determine whether the display area size needs to be changed (S225). At this time, as a result of other event information preceding in time, the display area size may have already been changed. In this case, it is not necessary to change the size, and the process proceeds to S228.

  If it is determined that the display area size needs to be changed, the coordinate management table in FIG. 7 and the divided area management table in FIG. 8 are referred to (S226). Then, the coordinates of the new display area and the effective flag of the divided area are acquired, and the area of the display video is changed based on this (S227). For example, in the case of “enlarging the size in the left direction”, the divided areas D and E in FIG. 8 are set as display areas. The same applies to the case where the display area is enlarged or reduced stepwise as shown in FIGS. 10A and 10B.

  Next, the content display control unit 33 changes / determines the content to be rendered in response to the current event information change (S228). For example, when making a left turn, an object (arrow) indicating left turn guidance is added as content to be drawn. Further, the number of objects may be increased or decreased as shown in FIG. 10A according to the steering angle. Then, in accordance with the display area changed in S227, the content changed in S228 is rendered (S229). Note that, even if the area size is not changed as a result of the determination in S225, the changed content rendering process is performed.

  This completes the display area size changing process and the content changing process linked thereto (S230). Thereafter, the process proceeds to S215 in FIG. 14B.

  As described above, according to the present embodiment, the size of the display area of the head-up display device can be changed, and the display can be performed according to the state of the vehicle, the state of the traveling road, the state of the driver, etc. that change every moment. Increase or decrease the size of the area in the required direction by the required amount. Thereby, it is easy for the driver to display the information for assisting driving in a timely and appropriate position so that the information can be displayed safely.

1: Head-up display device (HUD),
2: Vehicle,
3: Windshield,
4: Vehicle information,
9: Virtual image,
10: Vehicle information acquisition unit,
20: control unit,
21: Electronic control unit (ECU),
30: video display device,
33: Content display control unit,
34: Display area size control unit,
61, 65, 71, 72: display area.

Claims (7)

In a head-up display device that is mounted on a vehicle and displays a virtual image in front of the vehicle by generating and projecting an image,
A vehicle information acquisition unit for acquiring vehicle information of the vehicle by a device installed in the vehicle;
An image display device for generating the image to be projected;
A controller that determines the video to be generated by the video display device based on the vehicle information acquired by the vehicle information acquisition unit;
The control unit classifies the vehicle information into a plurality of event information, changes and determines the video content generated by the video display device according to the change in the acquired event information, and displays the video content A head-up display device characterized by changing and setting the size of an area to be operated (hereinafter referred to as a display area). The head-up display device according to claim 1,
In order to change the size of the display area, the control unit validates which area out of the coordinate management table in which the range of the display area after the change is described by coordinate values or the display area divided into a plurality of parts A head-up display device characterized by holding a divided area management table describing the above. The head-up display device according to claim 1,
The control unit represents the event information with an event ID, and an event management table that divides the event ID into a plurality of states and represents the event information with bit data;
An area size change table that defines how to change the size of the display area corresponding to the event ID and the bit data;
A head-up display device. The head-up display device according to claim 1,
When the control unit detects that the vehicle makes a right / left turn based on map information or steering information as the event information, the control unit displays a predetermined object indicating a right / left turn direction at a position where the vehicle makes a right / left turn. A head-up display device that enlarges the size of a display area. The head-up display device according to claim 1,
The control unit enlarges the size of the display area so that a predetermined object is displayed at the detected position when a pedestrian or an obstacle is detected in front of the vehicle by the camera outside the vehicle as the event information. Head-up display device. The head-up display device according to claim 4 or 5,
When the detected event information is completed, the control unit reduces the size of the enlarged display region in a stepwise manner with a time difference. The head-up display device according to claim 1,
The said control part detects a driver | operator's viewpoint position with the camera in a vehicle as said event information, The size of the said display area is expanded or reduced according to the detected position, The head-up display apparatus characterized by the above-mentioned.

Images