JP5197881B1 - Head-up display, control method, and display device - Google Patents

Abstract

The head-up display includes own vehicle position acquisition means, display means, first display control means, and second display control means. The own vehicle position acquisition means acquires the position of the moving body. The display means displays a virtual image superimposed on the scenery in front of the moving body. The first display control means causes the display means to display a first guidance image indicating a route from the current position of the moving body to the destination or stopover on the landscape. The second display control means superimposes the second guide image indicating the distance from the guide point existing on the route indicated by the first guide image on the first guide image and displays the second guide image on the display means.
[Selection] Figure 4

Description

  The present invention relates to a technique for displaying information.

  Conventionally, there is a technique for visually recognizing a display image of information related to driving 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 JP 09-194878 A Japanese Patent Laid-Open No. 2008-202987

  Next, in order for the driver to know the point where the next turn is to be made, the navigation apparatus has conventionally provided voice guidance and guidance display that conveys the distance to the guide point where the right / left turn is made at a predetermined timing. However, if the user has missed the voice guidance or is traveling on a complex road with many intersections, the driver may not be able to accurately grasp the point where the driver makes a right or left turn.

  The present invention has been made to solve the above-described problems, and is a head-up display, a display device, and a control method that allow a driver to visually and easily recognize the distance to a guide point. The main purpose is to provide

The claims, the head-up display, a vehicle position acquisition means for acquiring a position of the vehicle, and a display means for displaying a virtual image superimposed on a scene ahead of the vehicle, the destination or the current position of the vehicle The first guidance image showing a view of the route to the stop-off area obliquely below the ground surface is associated with the road surface corresponding to the route included in the landscape, and overlaps the sky, and the road surface A first display control means for displaying on the display means at a position that is vertically inverted with respect to the ground surface, and a second guide image that indicates the distance from the guide point that is present on the route and that is routed to turn right or left Second display control means for displaying on the display means superimposed on the first guide image, and the second display control means is a concentric circle drawn at a predetermined interval with the guide point as a center. The A serial second guide image, the road surface a predetermined distance from said guide point a position overlapping with the position obtained by vertically inverted with respect to the ground surface, overlaps with the sky in the range which is estimated as not to overlap with buildings and roads The concentric circle is an ellipse displayed on the entire circumference, and the interval increases from the ground surface toward the sky. The second display control means The second guide image is displayed on the display means so that the second guide image is displayed following a position corresponding to the guide point in the landscape as the guide point is approached. To do.

The claimed invention, the control method of a head-up display of the control means and control means for controlling display by said display means and the display means by superimposing the scene ahead of the vehicle to display a virtual image is executed A first guidance image showing a vehicle position acquisition step of acquiring the position of the vehicle, and a diagram in which a route from the current position of the vehicle to a destination or stopover is observed obliquely downward with respect to the ground surface A first display control step of causing the display means to display the position corresponding to the road surface corresponding to the route included in the landscape, the position overlapping with the sky and the position where the road surface is vertically inverted with respect to the ground surface; A second display control step of superimposing a second guide image on the route and indicating a distance from a guide point through which a right / left turn is made, on the first guide image and displaying the second guide image on the display means. In the second display control step, a concentric circle drawn at a predetermined interval with the guide point as a center is used as the second guide image, and the road surface that is a predetermined distance away from the guide point with respect to the ground surface. It is displayed on the display means at a position overlapping with the upside down position and overlapping with the sky, which is a range estimated not to overlap with the building and road, and the concentric circle is an ellipse displayed all around. The distance increases from the ground surface toward the sky. In the second display control step, as the vehicle approaches the guide point, the second guide image is moved to the guide point in the landscape. to appear to follow the corresponding position, characterized Rukoto to display the second guide image on the display means.

The invention described in the claims includes a host vehicle position acquisition unit that acquires the position of the vehicle, a display unit that displays a virtual image superimposed on a landscape in front of the vehicle, and a destination or a stopover from the current position of the vehicle A first guide image showing a view of the route to the surface observed obliquely downward with respect to the ground surface is associated with the road surface corresponding to the route included in the landscape, and the position is overlapped with the sky and the road surface is A first display control means for displaying on the display means at a position inverted upside down with respect to the second guidance image indicating the distance from the guide point that is present on the route and passes for making a right or left turn, Second display control means for superimposing the first guidance image on the display means, and displaying the concentric circles drawn at predetermined intervals around the guidance point. Second guide image and , The road surface a predetermined distance from said guide point a position overlapping with the position obtained by vertically inverted with respect to the ground surface, on said display means so as to overlap with the sky in the range which is estimated as not to overlap with buildings and roads The concentric circle is an ellipse displayed all around, and the interval increases from the ground surface toward the sky, and the second display control means, as the vehicle approaches the guide point the second guide image is to be displayed following the position corresponding to the guide point in the landscape, characterized Rukoto to display the second guide image on the display means.

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. It is another example of a display of the concentric circle by a head-up display. It is the example of a display which simplified the basic display by a head-up display. The other structural example by a head-up display is shown. The example of a display of the head up display concerning a modification is shown.

  In one preferred embodiment of the present invention, the head-up display includes a vehicle position acquisition unit that acquires a position of a moving body, a display unit that displays a virtual image superimposed on a landscape in front of the moving body, First display control means for causing the display means to display a first guidance image indicating a route from the current position of the moving body to the destination or stopover, corresponding to the road surface corresponding to the route included in the landscape; And second display control means for causing the display means to display a second guide image indicating a distance from a guide point existing on the route, superimposed on the first guide image.

  The head-up display includes own vehicle position acquisition means, display means, first display control means, and second display control means. The own vehicle position acquisition means acquires the position of the moving body. The display means displays a virtual image in association with the road surface corresponding to the route included in the scenery in front of the moving body. The first display control means causes the display means to display a first guidance image indicating a route from the current position of the moving body to the destination or stopover on the landscape. The second display control means superimposes the second guide image indicating the distance from the guide point existing on the route indicated by the first guide image on the first guide image and displays the second guide image on the display means. Here, the “guidance point” refers to a predetermined point such as a right or left turn point that is a point on the route and is determined to require guidance. By doing in this way, the head-up display can make a driver | operator recognize the distance to a guidance point visually and easily.

  In one aspect of the head-up display, the second display control unit causes the display unit to display the second guidance image in association with the road surface that is a predetermined distance away from the guidance point. Thereby, the head-up display can make a driver | operator recognize the distance to a guidance point visually and easily.

  In another aspect of the head-up display, the second display control means includes a first guidance point where the moving body is scheduled to pass next, and the moving body passes next to the first guidance point. When the distance from the second guidance point, which is a planned guidance point, is equal to or less than a predetermined distance, the second guidance image indicating the distance from the second guidance point is hidden. By doing in this way, the head-up display can suppress the display from becoming complicated due to the proximity of the first guide point and the second guide point.

  In another aspect of the head-up display, the second display control means includes a first guide point that is a guide point where the mobile object is scheduled to pass next, and the mobile object next to the first guide point. When the distance from the second guide point that is a guide point that is scheduled to pass is less than or equal to a predetermined distance, the display color of the second guide image indicating the distance from the first guide point and the distance from the second guide point The display color of the second guide image indicating is changed. By doing in this way, even if the 1st guidance point and the 2nd guidance point are near, a head up display distinguishes the 2nd guidance image to each guidance point, and makes an observer recognize. be able to.

  In another aspect of the head-up display, the second display control unit causes the display unit to display a concentric circle drawn at a predetermined interval with the guide point as the center. Thereby, the head-up display can make a driver | operator recognize the distance to a guidance point visually and easily.

  In another aspect of the head-up display, the second display control means is configured such that the second guide image is positioned at a position corresponding to the guide point in the landscape as the moving body approaches the guide point. The second guide image is displayed on the display means so as to follow and display. By doing in this way, the head-up display can always make a driver | operator visually recognize the distance to a guidance point correctly.

  In another aspect of the head-up display, the display by the first display control unit and the display by the second display control unit are displayed by the display unit so as to be superimposed on a sky position. Thereby, the head-up display can make the distance to a guidance point visible visually, without inhibiting driving | operation.

  In another aspect of the head-up display, the guide point is a point where the mobile body should turn right or left in order to arrive at the destination or the stopover.

  In another preferred embodiment of the present invention, the control means of the head-up display includes: a display means for displaying a virtual image superimposed on a landscape in front of a moving body; and a control means for controlling display by the display means. A vehicle position acquisition step of acquiring a position of a moving body, and a first guide image indicating a route from the current position of the moving body to a destination or a stop-off area. A first display control step for displaying in the display step in correspondence with the road surface corresponding to the route, and a second guide image indicating a distance from the guide point existing on the route are superimposed on the first guide image. And a second display control step for displaying on the display means. The head-up display allows the driver to visually and easily recognize the distance to the guide point by executing this control method.

  In still another preferred embodiment of the present invention, the vehicle position acquisition means for acquiring the position of the moving body, the display means for displaying a virtual image superimposed on the scenery in front of the moving body, and the current position of the moving body First display control means for displaying on the display means a first guidance image indicating a route from a position to a destination or a stopover location in correspondence with a road surface corresponding to the route included in the landscape; And a second display control means for displaying a second guide image indicating a distance from the guide point existing on the display means on the first guide image so as to be superimposed on the first guide image. According to this embodiment, the display device can make the driver recognize the distance to the guide point visually and easily.

  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 a departure place to a 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.

  When 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 autonomous 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 apparatus 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 is 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 display 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 vehicle compartment via the support members 5a and 5b, and the light constituting the image indicating information for assisting driving (also referred to as “driving assist information”) is sent to the combiner 9. The light is emitted. 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 “first display control unit” and the “second display control 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 guide route to a destination or a stop point designated as a stop point in the middle of the destination has already been set, and the head-up display 2 is It is assumed that the route guidance indicating that a left turn is made at an intersection 47 where the traffic signal 46 is installed is displayed.

  As shown in FIG. 4, the control unit 4 causes the driver to visually recognize the virtual image Iv via the combiner 9 by superimposing it on the landscape visually recognized via the front window 25. Specifically, in FIG. 4, the control unit 4 displays the guidance display icons 70 </ b> A to 70 </ b> C, arrows 71 </ b> A to 71 </ b> C, the guidance point information display 72, the guidance route 73, the virtual signal 74, and the 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.

  The guidance display icons 70 </ b> A to 70 </ b> C display information on 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 guide point information display 72 displays information regarding a guide 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 guide route 73 is a route that the vehicle should travel (also referred to as a “guide route”), and is displayed in 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 guide route 73 is an example of the “first guide image” in the present invention.

  The direction information display ring 75 displays the direction when observed from the same viewpoint as the guidance 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 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.

  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 in which 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.

  A concentric circle 76 indicates a distance interval from the guide point (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 (specifically, the center position of 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. Thus, the concentric circles 76 are drawn at every predetermined distance (50 m in the above example) from the guide point. By observing the concentric circles 76 drawn on the guide route 73, the driver can always easily recognize the distance to the guide point. The concentric circle 76 is an example of the “second guide image” in the present invention.

  Here, the control unit 4 predicts that the vehicle will pass next to the intersection 47, which is a guide point where the vehicle is expected to pass next (also referred to as “first guide point Pi1”), and the first guide point Pi1. When the distance to the guide point (also referred to as “second guide point Pi2”) is within a predetermined distance, the concentric circle 76 with respect to the second guide point Pi2 is not drawn. For example, when the concentric circle 76 with respect to the first guide point Pi1 and the concentric circle 76 with respect to the second guide point Pi2 are drawn, the predetermined distance is set to a distance where the concentric circles 76 overlap. Thereby, the control part 4 prevents the display by the virtual image Iv from becoming complicated. This will be explained in detail in the section [Plane Map Display] described later.

[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 displays a planar map. In FIG. 5, the control unit 4 displays a guidance point information display 72, a planar map 81, a current position display 82, a guidance route 83, and a concentric circle 76 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.

  A concentric circle 76 indicates a distance interval from the first guide point Pi1 corresponding to the intersection 47 on the planar map 81 of the guide route 83. Similar to FIG. 4, 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. Thus, the control unit 4 determines the distance from the current position to the next guide point, the intersection 47, based on the positional relationship between the first concentric circle 761, the second concentric circle 762, and the third concentric circle 763 and the current position display 82. Can be clearly recognized by the driver.

  Here, since the distance between the first guide point Pi1 and the second guide point Pi2 corresponding to the intersection 48 is within a predetermined distance, the control unit 4 does not draw the concentric circle 76 with respect to the second guide point Pi2. That is, the control unit 4 determines that the first guide point Pi1 and the second guide point Pi2 are close to each other and guides continuously in a short time, and does not draw the concentric circle 76 for the intersection 48. Thereby, the control unit 4 complicates the display by the virtual image Iv due to the fact that both the concentric circle 76 with respect to the first guidance point Pi1 and the concentric circle 76 with respect to the second guidance point Pi2 are displayed overlapping each other. Can be suppressed.

  Then, after the vehicle has passed the intersection 47, which is the first guidance point Pi1, the control unit 4 hides the concentric circle 76 with respect to the intersection 47 and is the second guidance point Pi2 until immediately before. A concentric circle 76 is drawn for the intersection 48 that is the point Pi1.

[Other display examples]
Next, another display example by the head-up display 2 will be described. For example, when detecting a specific input by the user, the control unit 4 may switch from the basic display shown in FIG. 4 or the planar map display shown in FIG. 5 to the display described below.

(1) Concentric color-coded display When the distance between the first guide point Pi1 and the second guide point Pi2 is within a predetermined distance, the control unit 4 has a concentric circle 76 with respect to the first guide point Pi1 and the second guide point Pi2. The concentric circles 76 may be displayed simultaneously by changing the display color of the concentric circles 76 with respect to these. This will be described with reference to FIG.

  FIG. 6 shows an example in which concentric circles 76 are color-coded in the planar map display. Here, it is assumed that the concentric circle 77A indicated by the solid line and the concentric circle 76B indicated by the broken line are displayed in different colors (for example, the former is black and the latter is red).

  In FIG. 6, since the distance between the intersection 47 that is the first guidance point Pi1 and the intersection 48 that is the second guidance point Pi2 is within a predetermined distance, the control unit 4 has the intersection 47 that is the first guidance point Pi1. The concentric circles 76A centered at the center and the concentric circles 76B centered at the intersection 48, which is the second guide point Pi2, are displayed in different colors. Thereby, even if it is a case where the concentric circle 76A with respect to the intersection 47 and the concentric circle 76B with respect to the intersection 48 are drawn simultaneously, the control part 4 can make a driver | operator clearly distinguish and visually recognize these, without complication.

  Even in the basic display shown in FIG. 4, the control unit 4 similarly controls the first guide point Pi1 when the distance between the first guide point Pi1 and the second guide point Pi2 is within a predetermined distance. By changing the display colors of the concentric circle 76 and the concentric circle 76 with respect to the second guide point Pi2, these concentric circles 76 may be displayed simultaneously. Thereby, the control part 4 can make a driver | operator clearly distinguish and visually recognize the concentric circle 76 with respect to each guidance point.

(2) Simple display The control unit 4 may perform a simplified display by omitting some displays from the basic display shown in FIG. This will be specifically described with reference to FIG.

  FIG. 7 shows a display example in which the basic display shown in FIG. 4 is simplified. In FIG. 7, the control unit 4 displays the guide route 73, the virtual signal 74, and the concentric circle 76 as a virtual image Iv, and guide display icons 70A to 70C, arrows 71A to 71C, guide point information display 72, and the like shown in FIG. The direction information display ring 75 is not displayed. Also according to this display mode, the control unit 4 allows the driver to grasp the direction to turn right or left next by the guidance route 73 and also visually and easily grasps the distance to the next guidance point by the concentric circle 76. Can be made.

  In any case of FIGS. 4 to 7, the control unit 4 displays the entire concentric circle 76 at a position overlapping the sky. By doing in this way, the head-up display 2 can make a driver | operator visually recognize the distance which made the guide point the base point suitably, without inhibiting driving | operation. In this case, for example, the control unit 4 previously sets a display range that is estimated not to overlap with a building, a road, or the like based on an experiment or the like, and displays the concentric circle 76 as a virtual image Iv within the display range.

[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 and 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 the driving assistance information without performing communication 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)
Instead of the head-up display 2, the navigation device 1 may display the above-described embodiment. In this case, the navigation apparatus 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 4)
In the display examples shown in FIGS. 4 to 7, the control unit 4 has drawn three circles of a first concentric circle 761, a second concentric circle 762, and a third concentric circle 763. Two or less circles or four or more circles may be drawn. Even in these cases, the concentric circles 76 are formed at equal intervals around a predetermined guide point at a position connecting points indicating equal distances from the guide point. Therefore, even in this case, the control unit 4 allows the driver to visually and easily grasp the distance from the guide point by causing the driver to visually recognize the concentric circle 76 as the virtual image Iv.

(Modification 5)
In the display example of FIG. 4, the destination icon 752 representing the destination is displayed on the direction information display ring 75. Alternatively or in addition to this, the head-up display 2 can be set in various locations such as a set stop-off location, a prominent landmark, and / or the location of a friend having a mobile terminal equipped with a GPS receiver. An icon indicating the position of the target may be 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 mobile terminal of a friend equipped with GPS, the navigation device 1 is acquired from the mobile terminal described above by the GPS receiver. The received position information is received by communication, and the position information and the information on the position and direction of the host vehicle are transferred to the control unit 4. Then, the light source unit 3 displays an icon indicating the friend of the mobile terminal that received the incoming call at a predetermined position on the direction information display ring 75 based on the received information.

(Modification 6)
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. 9A to 9C show transition of information display by the virtual image Iv in a time series viewed through the combiner 9 in the modification. Specifically, FIG. 9A shows the information display by the virtual image Iv when the vehicle is near 100 m to 75 m from the guidance point, and FIG. 9B is the vehicle near 75 m to 50 m from the guidance point. The information display by the virtual image Iv in the case is shown, and FIG. 9C shows the information display by 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. 9A to 9C, in this modification, the control unit 4 has an arrow 77 indicating a traveling direction (here, the left direction) 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. 9A to 9C, 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.

  Further, the control unit 4 sequentially displays the distance display 78 for the concentric circle 76 indicating the position closest to the current position. Specifically, when the vehicle is traveling from 75 m to 100 m from the guide point as shown in FIG. 9A, 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. Further, as shown in FIG. 9B, 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, as shown in FIG. 9C, when the vehicle is traveling at a point 25 m to 50 m from the guide point, the third concentric circle 763 and the second concentric circle 762 indicating points farther 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 (9)

Own vehicle position acquisition means for acquiring the position of the vehicle;
Display means for displaying a virtual image superimposed on a landscape in front of the vehicle;
Corresponding to the road surface corresponding to the route included in the landscape, the first guide image showing a view of the route from the current position of the vehicle to the destination or stopovers from a diagonally lower direction with respect to the ground surface , First display control means for displaying on the display means at a position that overlaps the sky and the road surface is vertically inverted with respect to the ground surface;
A second display control means for displaying on the display means a second guide image that is present on the route and that indicates a distance from a guide point through which a right or left turn is made, and is superimposed on the first guide image;
Have
The second display control means uses a concentric circle drawn at a predetermined interval centered on the guide point as the second guide image, and a position obtained by inverting the road surface that is a predetermined distance away from the guide point upside down with respect to the ground surface. Is displayed on the display means at a position overlapping with the sky, which is a range estimated not to overlap with the building and road ,
The concentric circles are ellipses displayed all around, and the intervals become wider from the ground surface toward the sky,
The second display control means is configured to display the second guidance image so that the second guidance image is displayed following a position corresponding to the guidance point in the landscape as the vehicle approaches the guidance point. head-up display, characterized in Rukoto to display images on the display means.   The second display control means attaches a display of the distance between the road surface corresponding to the outermost circle and the guide point to the outermost circle among the concentric circles drawn at the predetermined interval. Item 2. The head-up display according to Item 1.   3. The head-up display according to claim 1, wherein the second display control unit causes the display unit to display the concentric circles on the same height as the first guide image.   The second display control means causes the display means to display the concentric circle at a position overlapping the first guide image and at a position overlapping the sky in the landscape. The head-up display according to any one of 3 above.   5. The head according to claim 1, wherein the second display control unit causes the display unit to display the concentric circle at a position where a center of the concentric circle overlaps the first guide image. 6. Up display. A display by the first display control means, wherein the by the display second display control means, any one of claims 1 to 5, characterized in that it is displayed by the display means is overlapped with the position in the sky The head-up display according to item. The head-up display according to any one of claims 1 to 6 , wherein the guide point is a point where the vehicle should turn right or left in order to reach the destination or the stopover. A control method executed by the control means of a head-up display comprising display means for displaying a virtual image superimposed on a landscape in front of a vehicle and control means for controlling display by the display means,
A vehicle position acquisition step of acquiring the position of the vehicle;
Corresponding to the road surface corresponding to the route included in the landscape, the first guide image showing a view of the route from the current position of the vehicle to the destination or stopovers from a diagonally lower direction with respect to the ground surface , A first display control step of displaying on the display means at a position that overlaps with the sky and the road surface is vertically inverted with respect to the ground surface;
A second display control step of superimposing a second guide image on the route and indicating a distance from a guide point through which to turn right and left on the first guide image to be displayed on the display means;
Have
In the second display control step, a concentric circle drawn at a predetermined interval with the guide point as a center is used as the second guide image, and the road surface that is a predetermined distance away from the guide point is vertically inverted with respect to the ground surface. Is displayed on the display means at a position overlapping with the sky, which is a range estimated not to overlap with the building and road ,
The concentric circles are ellipses displayed all around, and the intervals become wider from the ground surface toward the sky,
In the second display control step, the second guidance image is displayed so that the second guidance image is displayed following a position corresponding to the guidance point in the landscape as the vehicle approaches the guidance point. the method according to claim Rukoto to display images on the display means. Own vehicle position acquisition means for acquiring the position of the vehicle;
Display means for displaying a virtual image superimposed on a landscape in front of the vehicle;
Corresponding to the road surface corresponding to the route included in the landscape, the first guide image showing a view of the route from the current position of the vehicle to the destination or stopovers from a diagonally lower direction with respect to the ground surface , First display control means for displaying on the display means at a position that overlaps the sky and the road surface is vertically inverted with respect to the ground surface;
A second display control means for displaying on the display means a second guide image that is present on the route and that indicates a distance from a guide point through which a right or left turn is made, and is superimposed on the first guide image;
Have
The second display control means uses a concentric circle drawn at a predetermined interval centered on the guide point as the second guide image, and a position obtained by inverting the road surface that is a predetermined distance away from the guide point upside down with respect to the ground surface. Is displayed on the display means at a position overlapping with the sky, which is a range estimated not to overlap with the building and road ,
The concentric circles are ellipses displayed all around, and the intervals become wider from the ground surface toward the sky,
The second display control means is configured to display the second guidance image so that the second guidance image is displayed following a position corresponding to the guidance point in the landscape as the vehicle approaches the guidance point. display device comprising Rukoto to display images on the display means.

Images