WO2013046425A1

WO2013046425A1 - Head-up display, control method, and display device

Info

Publication number: WO2013046425A1
Application number: PCT/JP2011/072541
Authority: WO
Inventors: 祐一松本; 宮坂　峰輝
Original assignee: パイオニア株式会社
Priority date: 2011-09-30
Filing date: 2011-09-30
Publication date: 2013-04-04

Abstract

A head-up display is provided with a position acquisition means, a direction acquisition means, a display means, and a display control means. The position acquisition means acquires the position of a mobile object. The direction acquisition means acquires the direction with respect to the mobile object of a guidance object present in any direction within 360 degrees when the mobile object is defined as a basic point. The display means displays a virtual image while superimposing the virtual image on a landscape ahead of the mobile object. The display control means causes the display means to display direction information indicating the direction in which the guidance object is present with respect to the current position of the mobile object using the traveling direction of the mobile object as a reference.

Description

Head-up display, control method, and display device

The present invention relates to a technique for displaying information.

Conventionally, there is a technique for visually displaying a display image of information related to driving of a vehicle as a virtual image from the position of the driver's eyes. For example, Patent Literature 1 discloses a head-up display that uses a windshield to display a bird's-eye view (overhead view) or a map image obtained by inverting the bird's-eye view above and below the driver's line-of-sight height. Yes. Patent Document 2 displays a search screen in which the display scale is a concentric circle with the current position as a base point, calculates a display position based on the current position of a search target such as a destination, and sets the display position as the display position. A technique for displaying a search mark indicating a search object is disclosed. Furthermore, in Patent Document 3, when a mobile terminal equipped with a GPS receiver is called through a telephone line and the mobile terminal receives an incoming call, the location of the mobile terminal is displayed on the screen together with map data. Techniques for making them disclosed are disclosed. Patent Document 4 discloses a technique for displaying navigation information superimposed on a landscape image in front of a vehicle.

JP 09-229707 A JP 2009-111856 A Japanese Patent Laid-Open No. 09-194878 JP 2008-202987 A

In the conventional head-up display, driving directions and facility information are displayed for the roads and facilities existing in the field of view ahead of the vehicle to assist driving. On the other hand, it may be convenient for the driver to understand the direction of an object that is not in the field of view ahead of the vehicle, such as the destination, a predetermined landmark, or the position of a friend's vehicle.

The present invention has been made to solve the above-described problems, and provides a head-up display, a display device, and a control method capable of suitably displaying a direction of an object in an arbitrary direction and place. The main purpose is to provide.

In the first aspect of the invention, the head-up display includes a position acquisition unit that acquires the position of the moving body, and the moving body that is a guidance target that exists in an arbitrary direction of 360 degrees when the moving body is used as a base point. Direction obtaining means for obtaining a direction with respect to the display, display means for displaying a virtual image superimposed on a landscape in front of the moving body, and the guidance with respect to the current position of the moving body on the basis of the traveling direction of the moving body Display control means for causing the display means to display direction information indicating the direction in which the target exists.

According to an eighth aspect of the invention, the control means of the head-up display includes display means for displaying a virtual image superimposed on the scenery in front of the moving body and control means for controlling display by the display means. A position acquisition step for acquiring the position of a moving body, and a direction acquisition step for acquiring a direction with respect to the moving body of a guidance target existing in an arbitrary direction of 360 degrees when the moving body is a base point. And a display control step of causing the display means to display direction information indicating the direction in which the guidance target exists with respect to the current position of the moving body with reference to the traveling direction of the moving body. To do.

In the invention according to claim 9, the display device is configured to obtain a position acquisition unit that acquires the position of the moving body, and the guidance target moving body that exists in an arbitrary direction of 360 degrees when the moving body is used as a base point. Direction guidance means for obtaining a direction, display means for displaying a virtual image superimposed on a landscape in front of the moving body, and the guidance target with respect to the current position of the moving body on the basis of the traveling direction of the moving body Display control means for causing the display means to display direction information indicating the direction in which the light is present.

It is an example of composition of a system concerning an example. It is a schematic structure of a navigation apparatus. It is a schematic structure of a head-up display. The display of the front window visually recognized by the driver is shown. The example of the plane map display by a head-up display is shown. The example of the non-visual information display by a head-up display is shown. It is another example of composition of a head up display. It is a display example of the head-up display which concerns on a modification.

In one preferred embodiment of the present invention, the head-up display includes a position acquisition unit that acquires a position of a moving body, and the guidance target that exists in an arbitrary direction of 360 degrees when the moving body is a base point. Direction acquisition means for acquiring a direction with respect to the moving body, display means for displaying a virtual image superimposed on a landscape in front of the moving body, and the current position of the moving body with respect to the traveling direction of the moving body Display control means for causing the display means to display direction information indicating the direction in which the guidance target exists.

The head-up display includes position acquisition means, direction acquisition means, display means, and display control means. The position acquisition unit acquires the position of the moving body. The direction acquisition means acquires a direction with respect to the moving object to be guided that exists in an arbitrary direction of 360 degrees when the moving object is the base point. The display means is a laser projector, for example, and displays a virtual image superimposed on the scenery in front of the moving body. The display control means causes the display means to display direction information indicating the direction in which the guidance target exists with respect to the current position of the moving body with reference to the traveling direction of the moving body. According to this embodiment, the head-up display allows the observer to visually recognize the direction of the guidance target existing in an arbitrary direction including the rear, in addition to the forward scenery visually recognized during driving.

In one aspect of the head-up display, the guidance target is present at a position not included in the landscape. According to this aspect, the head-up display can visually recognize the direction of an object such as a destination that the observer cannot directly visually recognize.

In another aspect of the head-up display, the guidance object includes an object that exists behind the moving direction of the moving body. Also according to this aspect, the head-up display can visually recognize the direction of an object that cannot be directly visually recognized by the observer.

In another aspect of the head-up display, the display control means represents a first image indicating a direction with respect to the moving body when the current position of the moving body is a center, the guidance object, and the guidance object And the second image superimposed on the position on the first image corresponding to the direction in which the image exists is displayed on the display unit as the direction information. In this aspect, the display control means displays the direction with the moving body as the base point by the first image and the direction of the predetermined target by the second image. Thereby, the head-up display can make an observer visually recognize the direction of the guidance object which does not exist in a visual field suitably.

In another aspect of the head-up display, the head-up display further includes a traveling direction acquisition unit that acquires a traveling direction of the moving body, and the display control unit displays a position corresponding to the traveling direction of the moving body on the first image. , And fixed in the area displayed by the display means. As a result, the head-up display allows the observer to grasp the relative positional relationship between the moving body and the guidance target in addition to the direction in which the guidance target exists.

In another aspect of the head-up display, the first image is formed in a ring shape, and a display indicating the predetermined direction is attached to a position corresponding to the predetermined direction of the first image. Has been. Thereby, the head-up display can make an observer grasp the direction where a predetermined object exists suitably.

In another aspect of the head-up display, the first image rotates based on a current position and a traveling direction of the moving body. Thereby, preferably, even if the moving body is moving, the head-up display can always allow the observer to accurately grasp the direction in which the predetermined target exists and the relative direction with respect to the moving body.

In another preferred embodiment of the present invention, the control means of the head-up display comprising: display means for displaying a virtual image superimposed on a landscape in front of the moving body; and control means for controlling display by the display means. A control method to be executed, a position acquisition step for acquiring a position of a moving body, and a direction for acquiring a direction with respect to the moving body of a guidance target existing in an arbitrary direction of 360 degrees when the moving body is a base point An acquisition step, and a display control step for displaying on the display means direction information indicating a direction in which the guidance target exists with respect to a current position of the moving body with reference to a traveling direction of the moving body. By executing this control method, the head-up display allows the observer to visually recognize the direction of the guidance target existing in an arbitrary direction including the rear, in addition to the forward scenery visually recognized during driving. .

In still another preferred embodiment of the present invention, the display device includes a position acquisition unit that acquires the position of the moving body, and the guidance target that exists in an arbitrary direction of 360 degrees when the moving body is a base point. Direction acquisition means for acquiring a direction with respect to the moving body, display means for displaying a virtual image superimposed on a landscape in front of the moving body, and the current position of the moving body with respect to the traveling direction of the moving body Display control means for causing the display means to display direction information indicating the direction in which the guidance target exists. According to this embodiment, the display device allows the observer to visually recognize the direction of the guidance target existing in an arbitrary direction including the rear, in addition to the forward scenery visually recognized during driving.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[System configuration]
FIG. 1 shows a configuration example of a system according to the present embodiment. As shown in FIG. 1, the system includes a navigation device 1 and a head-up display 2. The system is mounted on a vehicle.

The navigation device 1 has a function of performing route guidance from the departure point to the destination. The navigation device 1 can be, for example, a stationary navigation device installed in a vehicle, a PND (Portable Navigation Device), or a mobile phone such as a smartphone.

The head-up display 2 generates an image that displays map information including the current position, route guidance information, travel speed, and other information that assists driving, and the image is converted into a virtual image from the position (eye point) of the driver's eyes. It is a device for visual recognition. The head-up display 2 is supplied from the navigation device 1 with various information used for navigation processing such as vehicle position and orientation information, map information, and facility data.

If the navigation device 1 is a mobile phone such as a smartphone, the navigation device 1 may be held by a cradle or the like. In this case, the navigation device 1 may exchange information with the head-up display 2 via a cradle or the like.

[Configuration of navigation device]
FIG. 2 shows the configuration of the navigation device 1. As shown in FIG. 2, the navigation device 1 includes a self-supporting positioning device 10, a GPS receiver 18, a system controller 20, a disk drive 31, a data storage unit 36, a communication interface 37, a communication device 38, an interface 39, and a display unit 40. A voice output unit 50 and an input device 60.

The self-supporting positioning device 10 includes an acceleration sensor 11, an angular velocity sensor 12, and a distance sensor 13. The acceleration sensor 11 is made of, for example, a piezoelectric element, detects vehicle acceleration, and outputs acceleration data. The angular velocity sensor 12 is composed of, for example, a vibrating gyroscope, detects the angular velocity of the vehicle when the direction of the vehicle is changed, and outputs angular velocity data and relative azimuth data. The distance sensor 13 measures a vehicle speed pulse composed of a pulse signal generated with the rotation of the vehicle wheel.

The GPS receiver 18 receives radio waves 19 carrying downlink data including positioning data from a plurality of GPS satellites. The positioning data is used to detect the absolute position of the vehicle (hereinafter also referred to as “current position”) from latitude and longitude information.

The system controller 20 includes an interface 21, a CPU (Central Processing Unit) 22, a ROM (Read Only Memory) 23, and a RAM (Random Access Memory) 24, and controls the entire navigation device 1.

The interface 21 performs an interface operation with the acceleration sensor 11, the angular velocity sensor 12, the distance sensor 13, and the GPS receiver 18. From these, vehicle speed pulses, acceleration data, relative azimuth data, angular velocity data, GPS positioning data, absolute azimuth data, and the like are input to the system controller 20. The CPU 22 controls the entire system controller 20. The ROM 23 includes a nonvolatile memory (not shown) in which a control program for controlling the system controller 20 is stored. The RAM 24 stores various data such as route data preset by the user via the input device 60 so as to be readable, and provides a working area to the CPU 22.

A system controller 20, a disk drive 31 such as a CD-ROM drive or a DVD-ROM drive, a data storage unit 36, a communication interface 37, a display unit 40, an audio output unit 50 and an input device 60 are mutually connected via a bus line 30. It is connected to the.

The disk drive 31 reads and outputs content data such as music data and video data from a disk 33 such as a CD or DVD under the control of the system controller 20. The disk drive 31 may be either a CD-ROM drive or a DVD-ROM drive, or may be a CD and DVD compatible drive. The data storage unit 36 is configured by, for example, an HDD and stores various data used for navigation processing such as map data. The communication device 38 includes, for example, an FM tuner, a beacon receiver, a mobile phone, a dedicated communication card, and the like, and information distributed from a VICS (Vehicle Information Communication System) center or the like (hereinafter referred to as “VICS information”). Is acquired from the radio wave 39. The interface 37 performs an interface operation of the communication device 38 and inputs the VICS information to the system controller 20 or the like. Further, the communication device 38 transmits information on the current position acquired from the GPS receiver 18 to the head-up display 2.

The display unit 40 displays various display data on a display device such as a display under the control of the system controller 20. Specifically, the system controller 20 reads map data from the data storage unit 36. The display unit 40 displays the map data read from the data storage unit 36 by the system controller 20 on the display screen. The display unit 40 includes a graphic controller 41 that controls the entire display unit 40 based on control data sent from the CPU 22 via the bus line 30 and a memory such as a VRAM (Video RAM), and can display image information that can be displayed immediately. A buffer memory 42 that temporarily stores, a display control unit 43 that controls display of a display 44 such as a liquid crystal or a CRT (Cathode Ray Tube) based on image data output from the graphic controller 41, and a display 44 are provided. . The display 44 functions as an image display unit, and includes, for example, a liquid crystal display device having a diagonal size of about 5 to 10 inches and is mounted near the front panel in the vehicle.

The audio output unit 50 performs D / A (Digital to Analog) conversion of audio digital data sent from the CD-ROM drive 31, DVD-ROM 32, RAM 24, or the like via the bus line 30 under the control of the system controller 20. A D / A converter 51 to perform, an amplifier (AMP) 52 that amplifies the audio analog signal output from the D / A converter 51, and a speaker 53 that converts the amplified audio analog signal into sound and outputs the sound into the vehicle. It is prepared for.

The input device 60 includes keys, switches, buttons, a remote controller, a voice input device, and the like for inputting various commands and data. The input device 60 is disposed around the front panel and the display 44 of the main body of the in-vehicle electronic system mounted in the vehicle. When the display 44 is a touch panel system, the touch panel provided on the display screen of the display 44 also functions as the input device 60.

[Configuration of head-up display]
FIG. 3 is a schematic configuration diagram of the head-up display 2. As shown in FIG. 3, the head-up display 2 according to this embodiment includes a light source unit 3 and is attached to a vehicle including a front window 25, a ceiling portion 27, a bonnet 28, a dashboard 29, and the like.

The light source unit 3 is installed on the ceiling portion 27 in the passenger compartment via the support members 5a and 5b, and transmits light constituting an image indicating information for assisting driving (also referred to as “driving assist information”) to the combiner 9. Exit toward. Specifically, the light source unit 3 generates an original image (real image) of the display image in the light source unit 3 based on the control of the control unit 4, and emits light constituting the image to the combiner 9. The virtual image “Iv” is visually recognized by the driver via the combiner 9. The light source unit 3 is an example of the “display unit” in the present invention.

The combiner 9 projects the display image emitted from the light source unit 3 and reflects the display image to the driver's eye point Pe to display the display image as a virtual image Iv. And the combiner 9 has the support shaft part 8 installed in the ceiling part 27, and rotates the support shaft part 8 as a spindle. The support shaft portion 8 is installed, for example, in the vicinity of the ceiling portion 27 in the vicinity of the upper end of the front window 25, in other words, the position where a sun visor (not shown) for the driver is installed. The support shaft portion 8 may be installed instead of the above-described sun visor.

The control unit 4 includes a CPU, RAM, ROM, and the like (not shown), and performs general control of the head-up display 2. The control unit 4 can communicate with the navigation device 1 and receives various types of information used for navigation processing from the navigation device 1. The control unit 4 is an example of the “position acquisition unit”, “direction acquisition unit”, “display control unit”, and “travel direction acquisition unit” in the present invention.

[Basic display]
Next, a typical display example by the head-up display 2 will be described with reference to FIG. FIG. 4 shows a display example of the front window 25 visually recognized by the driver. In FIG. 4, the position of the combiner 9 is indicated by a broken line. Also, as a premise, in FIG. 4, a guidance route to the destination is already set, and the head-up display 2 displays a route guidance indicating that the vehicle turns left at the intersection 47 where the traffic light 46 is installed. To do.

As shown in FIG. 4, the control unit 4 causes the driver to visually recognize the virtual image Iv via the combiner 9 while superimposing it on the scenery visually recognized via the front window 25. Specifically, in FIG. 4, the control unit 4 displays guidance display icons 70A to 70C, arrows 71A to 71C, guidance point information display 72, guidance route 73, virtual signal 74, and direction information display in a range overlapping with the combiner 9. The ring 75 and the concentric circle 76 are displayed as virtual images Iv, respectively.

Guidance display icons 70A to 70C display information related to the facility and the point for a predetermined facility and the point visually recognized through the front window 25. Specifically, the control unit 4 determines that the building 45A is visually recognized through the windshield 25 based on the current position, the vehicle orientation, and the map information transmitted from the navigation device 1, and the guidance display icon 70A. Displays the facility name “facility A” of the building 45A, and the arrow 71A indicates that the guidance display icon 70A is facility information of the building 45A. Similarly, the control unit 4 determines that the parking lot 45B is visually recognized through the windshield 25, and displays a guidance display icon 70B that displays a mark “P” indicating that the parking lot 45B is a parking lot. Is displayed together with an arrow 71B. In addition, the control unit 4 determines that an automatic speed control device (Obis) is installed on the road 45C to be next left-turned, and a guidance display that displays a camera mark for the road to be left-turned next. Icon 70C is displayed along with arrow 71C.

The guidance point information display 72 displays information on the guidance point (here, the intersection 47) where the next turn is performed. Specifically, the control unit 4 calculates the distance from the current position to the intersection 47 based on the current position information and the map information transmitted from the navigation device 1, specifies the name of the intersection 47, and determines “200 m “XX intersection” is displayed. In addition, the guide point information display 72 displays an arrow mark 720 indicating a direction to be turned at the intersection 47 (here, the left direction).

The guidance route 73 is a route along which the vehicle should travel (also referred to as “guidance route”), and is displayed as an overhead view that is vertically inverted. In other words, the guide route 73 is displayed in a state of being projected obliquely downward with respect to the ground surface. Therefore, in the guidance route 73, the traveling direction coincides with the lower direction of the windshield 25. In addition, the guide route 73 virtually displays a guide route in a range that is actually visible to the driver through the front window 25. A virtual signal 74 that virtually displays the traffic light 46 is shown at the left turn point of the guide route 73. As described above, when there is a traffic light in the guidance route indicated by the guidance route 73, the control unit 4 displays the virtual signal 74 superimposed on the guidance route 73.

The direction information display ring 75 displays the direction when observed from the same viewpoint as the guide route 73 with the center as the current position. Here, the left end position 751L of the direction information display ring 75 corresponds to the left side direction of the vehicle, the right end position 751R of the direction information display ring 75 corresponds to the right side direction of the vehicle, and the lower end of the direction information display ring 75. The position 751F corresponds to the traveling direction of the vehicle, and the upper end position 751B of the direction information display ring 75 corresponds to the backward traveling direction of the vehicle. Thus, the control unit 4 fixes the position corresponding to the traveling direction of the vehicle on the direction information display ring 75 to the lower end position 751F. In other words, the control unit 4 fixes the position corresponding to the traveling direction of the vehicle on the direction information display ring 75 in the display area of the virtual image Iv. Further, the position of “N” in the direction information display ring 75 indicates the north direction with the current position as a base point. The display of “N” in the direction information display ring 75 is an example of “display indicating a predetermined direction” in the present invention. The direction information display ring 75 rotates according to the direction of the vehicle, so that it always displays an accurate direction with respect to the current position.

Further, on the direction information display ring 75, a destination icon 752 that moves on the direction information display ring 75 in accordance with the direction where the destination exists is displayed. The destination icon 752 moves on the direction information display ring 75 according to changes in the position and orientation of the vehicle. In FIG. 4, the destination icon 752 indicates that the destination exists in the west direction from the current position. Furthermore, the direction information display ring 75 indicates the relative direction between the vehicle and the destination in association with displaying the direction of the destination with respect to the current position. Specifically, in FIG. 4, the destination icon 752 indicates that the destination exists in a diagonally left direction with respect to the traveling direction of the vehicle.

Here, the direction information display ring 75 and the destination icon 752 are examples of “direction information” in the present invention, and the direction information display ring 75 is an example of “first image” in the present invention. Is an example of a “second image” in the present invention.

The concentric circle 76 indicates a distance interval from the guide point of the guide route 73 on the display of the guide route 73. In other words, the concentric circles 76 are concentric circles connecting positions that are equidistant from the guide point of the guide route 73, that is, the intersection 47. The concentric circle 76 includes a first concentric circle 761, a second concentric circle 762, and a third concentric circle 763 drawn at equal intervals from the guide point. For example, when the concentric circle 76 is drawn every “50 m”, the first concentric circle 761 indicates the position “50 m” from the intersection 47, the second concentric circle 762 indicates the position “100 m” from the intersection 47, and the third concentric circle 763. Indicates a position “150 m” from the intersection 47.

As described above, in the display example shown in FIG. 4, the head-up display 2 operates in addition to information display (also referred to as “in-view information display”) regarding an object such as a facility or road in the driver's view. Display information on an object outside the user's field of view (also referred to as “out-of-field information display”). Thereby, the head-up display 2 can make an observer recognize not only the information of the building etc. which exists in an observer's visual field but the direction of the object in the distance. In FIG. 4, in-view information display includes guide display icons 70A to 70C, arrows 71A to 71C, guide point information display 72, guide route 73, virtual signal 74, concentric circle 76, and the like. Corresponds to the direction information display ring 75.

[Plane map display]
In addition to the display shown in FIG. 4, the control unit 4 performs display including a map displayed on a plane (also referred to as “planar map display”) as information display by the virtual image Iv based on a user operation. This will be described with reference to FIG. In addition, the control part 4 switches these displays, when the input to predetermined input means, such as a remote controller (not shown) for operating the head-up display 2, for example, is detected.

FIG. 5 shows a display example of the front window 25 visually recognized by the driver when the head-up display 2 performs a planar map display. In FIG. 5, the control unit 4 displays a guidance point information display 72, a planar map 81, a current position display 82, and a guidance route 83 as a virtual image Iv.

The planar map 81 is a map in which an area including the current position is planarly displayed at a predetermined scale. The scale of the planar map 81 is changed by a predetermined input to the head-up display 2 by an input unit (not shown). The current position display 82 indicates the current position of the vehicle on the planar map 81. A guide route 83 indicates a guide route that the vehicle should travel in the planar map 81.

[Other display examples]
Next, another display example by the head-up display 2 will be described. The head-up display 2 can also display only out-of-view information display based on user input. Hereinafter, a display example in this case will be described.

FIG. 6 shows an example of non-visual information display by the head-up display 2. Here, it is assumed that the guide route to the destination is not set. As shown in FIG. 6, in this case, the control unit 4 displays a direction information display ring 75 and displays a landmark icon 752 </ b> A indicating a position where a famous radio tower exists on the direction information display ring 75. ing. Here, the landmark icon 752A indicates that a well-known radio tower is in the east direction, and exists in the diagonally right rear direction with respect to the traveling direction of the vehicle. Then, the landmark icon 52A moves on the direction information display ring 75 in accordance with changes in the position of the vehicle and the traveling direction.

In this way, the control unit 4 uses the direction information display ring 75 to make a relative direction with respect to the direction of an arbitrary target in the range of 360 degrees with respect to the traveling direction including the rear as well as the front of the own vehicle. Various directions can be displayed.

Further, the control unit 4 replaces or in addition to the destination icon 752 and the landmark icon 752A shown in FIG. Icons indicating the positions of various objects such as may be displayed on the direction information display ring 75. Specifically, the control unit 4 displays, on the direction information display ring 75, for example, an icon representing a guidance target designated based on a user input.

Here, an example will be described in which an icon indicating the position of a friend who has a mobile terminal equipped with a GPS receiver is displayed on the direction information display ring 75. For example, when the navigation device 1 has a call function and a call is received from a friend's portable terminal equipped with a GPS receiver, the navigation device 1 receives the GPS receiver from the portable terminal described above. The position information acquired by the above is received by communication, and the position information and the information on the position and direction of the own vehicle are transferred to the control unit 4. And the control part 4 displays the icon which shows the friend of the portable terminal device which received the call in the position on the direction information display ring 75 specified based on the received information.

In this way, the control unit 4 can suitably display the direction of the guidance target that is outside the driver's vision and serves as a driving landmark and the direction with respect to the host vehicle by the direction information display ring 75.

[Modification]
Hereinafter, modified examples suitable for the above-described embodiments will be described. The following modifications may be applied in any combination to the above-described embodiments.

(Modification 1)
In FIG. 3, the head-up display 2 allows the driver to visually recognize the virtual image Iv via the combiner 9, but the configuration of the head-up display 2 to which the present invention can be applied is not limited to this.

FIG. 8 shows a schematic configuration of a head-up display 2A according to a modification. As shown in FIG. 8, in the head-up display 2 </ b> A, the light source unit 3 emits light constituting the display image toward the windshield 25. The front window 25 projects the display image emitted from the light source unit 3 and reflects the display image to the eye point Pe to display the display image as a virtual image Iv.

Further, the position of the light source unit 3 is not limited to being installed on the ceiling portion 27 but may be installed inside the dashboard 29. In this case, the dashboard 29 is provided with an opening for allowing light to pass through the combiner 9 in FIG. 3 or the front window 25 in FIG.

(Modification 2)
In the description of FIG. 1 and the like, the head-up display 2 generates an image indicating driving assistance information after receiving map information or the like from the navigation device 1. However, the configuration to which the present invention can be applied is not limited to this. Instead, the navigation device 1 generates an image indicating driving assistance information, transmits the image to the head-up display 2, and the head-up display. 2 may emit light constituting the received image. That is, in this case, the system controller 20 of the navigation device 1 performs part or all of the processing performed by the control unit 4 of the head-up display 2. Also by this, the head-up display 2 can make a driver | operator visually recognize the driving assistance information as the virtual image Iv suitably. In this case, the navigation device 1 and the head-up display 2 are examples of the “head-up display” or “display device” in the present invention.

In another example, the head-up display 2 may display driving assistance information without communicating with the navigation device 1. In this case, the light source unit 3 of the head-up display 2 includes a self-supporting positioning device such as a GPS receiver and a distance sensor, and measures the position and direction of the vehicle. The light source unit 3 stores map information including facility information in a memory in advance. Then, the light source unit 3 refers to map information and the like based on the measured vehicle position and the like, and emits light constituting an image indicating driving assistance information.

(Modification 3)
The head-up display 2 may display the direction information display ring 75 as a virtual image Iv together with the planar map display shown in FIG. In this case, the direction information display ring 75 is preferably formed so that the widths of the left end position 751L and the right end position 751R are equal to the widths of the upper end position 751B and the lower end position 751F, and the lower end position 751F. Corresponds to the backward direction of the vehicle, and the upper end position 751B corresponds to the traveling direction of the vehicle.

(Modification 4)
Instead of the head-up display 2, the navigation device 1 may display the above-described embodiment. In this case, the navigation device 1 acquires an image showing a landscape in the forward direction of the vehicle from an imaging unit such as a camera that captures the forward direction of the vehicle, and superimposes the image on the image to display guidance display icons 70A to 70C and direction information. The contents of the virtual image Iv such as the ring 75 are displayed. In this case, the navigation device 1 is an example of the “display device” in the present invention.

(Modification 5)
In addition to the display by the virtual image Iv shown in FIG. 4, the head-up display 2 further adds an arrow indicating the traveling direction to a position corresponding to the guide point of the guide route 73, or corresponds to each of the concentric circles 76. An indication of the distance from the guide point indicated by the concentric circle 76 may be added.

FIGS. 8A to 8C show transition of information display by the virtual image Iv in a time series viewed through the combiner 9 in the modified example. Specifically, FIG. 8 (a) shows information display by a virtual image Iv when the vehicle is near 100m to 75m from the guidance point, and FIG. 8 (b) shows that the vehicle is near 75m to 50m from the guidance point. FIG. 8C shows information display using the virtual image Iv when the vehicle is in the vicinity of 50 m to 25 m from the guide point.

As shown in FIGS. 8A to 8C, in this modification, the control unit 4 has an arrow 77 indicating a traveling direction (left direction in this case) at a position corresponding to the guide point of the guide route 73 and a concentric circle. A distance display 78 displaying the distance from the guide point indicated by 76 is displayed as a virtual image Iv. Here, the first concentric circle 761 indicates a position 25 m from the guidance point, the second concentric circle 762 indicates a position 50 m from the guidance point, and the third concentric circle 763 indicates a position 75 m from the guidance point. And

And in this modification, the control part 4 changes the magnitude | size of the arrow 77 according to the distance of a guidance point and a vehicle. Specifically, as shown in FIGS. 8A to 8C, the control unit 4 displays the arrow 77 larger as the vehicle approaches the guide point. Thereby, the control part 4 makes a driver | operator clearly visually recognize the guidance point which should turn right and left next, and the advancing direction in the said guidance point.

Also, the control unit 4 sequentially displays the distance display 78 for the concentric circle 76 indicating the position closest to the current position. Specifically, as shown in FIG. 8A, when the vehicle is traveling from 75 m to 100 m from the guide point, the third concentric circle 763 corresponds to the outermost concentric circle 76. Therefore, the control unit 4 attaches a distance display 78 to the third concentric circle 763 to the effect that the third concentric circle 763 is a 75 m point from the guide point. Also, as shown in FIG. 8B, when the vehicle is traveling from 50 m to 100 m from the guide point, the third concentric circle 763 indicating a point farther from the guide point than the current position is not displayed. The second concentric circle 762 among the concentric circles 76 is the outermost concentric circle 76. Therefore, in this case, the control unit 4 attaches a distance display 78 to the second concentric circle 762 to the effect that the second concentric circle 762 is 50 m from the guide point. Similarly, when the vehicle is traveling from 25 m to 50 m from the guide point as shown in FIG. 8C, the third concentric circle 763 and the second concentric circle 762 indicating points far from the guide point than the current position are Of the displayed concentric circles 76, the first concentric circle 761 is the outermost concentric circle 76. Therefore, in this case, the control unit 4 attaches a distance display 78 to the first concentric circle 761 to the effect that the first concentric circle 761 is 25 m from the guide point. Thereby, the control part 4 makes a driver | operator easily visually recognize the distance to the guidance point which should turn right and left next.

The present invention can be suitably applied to a head-up display that allows a driver to visually recognize route guidance and vehicle information.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2 Head-up display 3 Light source unit 9 Combiner 25 Front window 28 Bonnet 29 Dashboard

Claims

Position acquisition means for acquiring the position of the moving body;
Direction acquisition means for acquiring a direction of the guidance target with respect to the moving object existing in an arbitrary direction of 360 degrees when the moving object is a base point;
Display means for displaying a virtual image superimposed on the scenery in front of the moving body;
Display control means for causing the display means to display direction information indicating the direction in which the guidance target is present with respect to the current position of the moving body, with reference to the traveling direction of the moving body;
A head-up display comprising:
The head-up display according to claim 1, wherein the guidance object is present at a position not included in the landscape.
The head-up display according to claim 1 or 2, wherein the guidance object includes an object existing behind the moving direction of the moving body.
The display control means includes
A first image showing a direction relative to the moving body when the current position of the moving body is the center;
A second image that represents the guidance object and is superimposed at a position on the first image corresponding to the direction in which the guidance object exists.
The head-up display according to any one of claims 1 to 3, wherein the direction information is displayed on the display means.
It further comprises traveling direction acquisition means for acquiring the traveling direction of the moving body,
The display control means includes
The head-up display according to claim 4, wherein a position corresponding to a traveling direction of the moving body on the first image is fixed in an area displayed by the display unit.
5. The first image is formed in a ring shape, and a display indicating the predetermined direction is attached to a position corresponding to the predetermined direction of the first image. Or the head-up display of 5.
The head-up display according to claim 6, wherein the first image rotates based on a current position and a traveling direction of the moving body.
A control method executed by the control means of the head-up display, comprising: display means for displaying a virtual image superimposed on a landscape in front of the moving body; and control means for controlling display by the display means,
A position acquisition step of acquiring the position of the moving body;
A direction acquisition step of acquiring a direction with respect to the moving body of the guidance target existing in an arbitrary direction of 360 degrees when the moving body is a base point;
A display control step of causing the display means to display direction information indicating a direction in which the guidance target exists with respect to a current position of the moving body with reference to a traveling direction of the moving body;
A control method characterized by comprising:
Position acquisition means for acquiring the position of the moving body;
Direction acquisition means for acquiring a direction of the guidance target with respect to the moving object existing in an arbitrary direction of 360 degrees when the moving object is a base point;
Display means for displaying a virtual image superimposed on the scenery in front of the moving body;
Display control means for causing the display means to display direction information indicating the direction in which the guidance target is present with respect to the current position of the moving body, with reference to the traveling direction of the moving body;
A display device comprising: