WO2015114807A1

WO2015114807A1 - Virtual image display, control method, program, and storage medium

Info

Publication number: WO2015114807A1
Application number: PCT/JP2014/052292
Authority: WO
Inventors: 祐樹北
Original assignee: パイオニア株式会社
Priority date: 2014-01-31
Filing date: 2014-01-31
Publication date: 2015-08-06

Abstract

A head-up display (2) is provided with a light source unit (4) and a combiner (9). A controller (55) of the light source unit (4) allows symbolic images of facilities to be displayed as virtual images (Iv) at corresponding positions of the facilities on the combiner (9) so that the symbolic images are overlaid on a real scene. At this time, out of the facilities located inside a display target area (AT) that includes an area set in the traveling direction of a vehicle (Ve) and where the facilities to be displayed are located, the controller (55) restricts the displaying of the symbolic images of the facilities that are located inside a restricted area (AR) set in a direction away from the traveling direction.

Description

Virtual image display device, control method, program, and storage medium

The present invention relates to a technique for displaying a virtual image superimposed on a front landscape.

2. Description of the Related Art Conventionally, a technique for displaying an image for assisting driving or the like as a virtual image over a front landscape is known. For example, in Patent Document 1, when a display indicating the position of a superimposition object is displayed in a display area set on a windshield, and display information is displayed at a position different from the position of the superimposition object, the superposition object It is disclosed that a display indicating the correspondence between the position of an object and display information is added.

Japanese Patent Laying-Open No. 2005-69776

Generally, it is known that the visual field of the driver is narrowed as the traveling speed of the vehicle increases. During high-speed traveling, the driver's line of sight is often directed in the traveling direction, and therefore, it is often unnecessary to display a position that deviates from the traveling direction. This problem and its solution are not disclosed in Patent Document 1.

The present invention has been made to solve the above-described problems, and mainly provides a virtual image display device capable of suitably limiting the display of a mark image at a position deviating from the traveling direction. With a purpose.

The invention described in claim includes display control means for displaying a mark image indicating an object on the display means as a virtual image at a position corresponding to the object so as to overlap the actual landscape, and a traveling direction of the moving object Restricting means for restricting display of the mark image for an object existing within a restriction range set in a direction away from the traveling direction among objects existing within a range where the mark image is to be displayed; The limiting means changes the limiting range in accordance with a traveling speed of the moving body.

The invention described in claim is a control method executed by the virtual image display device, wherein a mark image indicating an object is displayed as a virtual image at a position corresponding to the object so as to overlap an actual landscape. Among the objects existing within the range to display the mark image including the display control process to be displayed and the moving direction of the moving object, the objects existing within the limit range set in the direction away from the moving direction A restricting step for restricting the display of the mark image, wherein the restricting step changes the restricting range in accordance with a traveling speed of the moving body.

The invention described in the claims is a program executed by a computer, wherein a mark image indicating an object is displayed on a display unit as a virtual image at a position corresponding to the object so as to overlap an actual landscape. The control means and the mark for an object existing within a limited range set in a direction away from the traveling direction among objects existing within a range to display the mark image including the traveling direction of the moving object The computer is made to function as a limiting unit that limits display of an image, and the limiting unit changes the limiting range according to a traveling speed of the moving body.

1 shows a schematic configuration of a display system. 1 shows a schematic configuration of a navigation device. 1 shows a schematic configuration of a head-up display. The schematic structure of a light source unit is shown. It is a flowchart which shows the outline | summary of the display process of a mark image. (A) The limit range on the map representing the periphery of the current position of the vehicle when the vehicle speed is less than 20 km / h is shown. (B) It is an example of the front scenery visually recognized from a driver's seat. (A) The limit range on the map showing the periphery of the current position of the vehicle when the vehicle speed is 60 km / h or higher is shown. (B) It is a display example of a combiner. It is a display example of the combiner which concerns on a modification. It is a display example of the combiner which concerns on a modification. (A) The limit range which concerns on the modification on the map showing the present position periphery of the vehicle in case a vehicle speed is 60 km / h or more is shown. (B) It is a display example of a combiner. (A) The limit range which concerns on the modification on the map showing the present position periphery of the vehicle in case a vehicle speed is 60 km / h or more is shown. (B) It is a display example of a combiner.

In one preferred embodiment of the present invention, the virtual image display device includes a display control unit that causes the display unit to display a mark image indicating the target object as a virtual image at a position corresponding to the target object so as to overlap the actual landscape. Display of the mark image for an object existing within a limited range set in a direction away from the traveling direction among objects existing within a range in which the mark image including the traveling direction of the moving object is to be displayed Restricting means for restricting, and the restricting means changes the restricting range according to the traveling speed of the moving body.

The virtual image display device includes display control means and restriction means. The display control means causes the display means to display a mark image indicating the object as a virtual image at a position corresponding to the object so as to overlap the actual landscape. “Object” refers to an object to be displayed as a mark image. The restricting means displays the mark image of the object existing within the restriction range set in the direction away from the traveling direction among the objects existing within the range where the mark image including the traveling direction of the moving object is to be displayed. Limit. According to this aspect, the virtual image display device restricts display of an object existing in a direction deviating from the traveling direction in accordance with the traveling speed of the moving object, and preferably displays a mark image at a position that is difficult to visually recognize during traveling. Can be limited to.

In one aspect of the virtual image display device, the limiting means widens the limiting range as the traveling speed increases. Accordingly, the virtual image display device can suitably set the limit range in consideration that the driver's field of view becomes narrower as the traveling speed increases.

In another aspect of the virtual image display device, the restriction unit erases the mark image corresponding to the restriction range or displays the mark image in a less conspicuous manner than the mark image not corresponding to the restriction range. By doing in this way, the virtual image display apparatus can restrict | limit the display of the mark image within a restriction | limiting range suitably.

In another aspect of the virtual image display device, the restriction unit displays the mark image corresponding to the restriction range at a position corresponding to a range where the mark image outside the restriction range is to be displayed. And move in the traveling direction side. By doing in this way, the virtual image display apparatus can move the mark image of the target object within the limit range to a position where the driver can easily visually recognize it, and can make it appropriately visible.

In another aspect of the virtual image display device, the restriction unit sets the restriction range on the opposite lane side wider than the lane side on which the moving body travels. According to this aspect, the virtual image display device can positively display a mark image of an object that is present at a position where the moving body is likely to drop.

In another aspect of the virtual image display device, the display control means expands a range in which the mark image should be displayed according to the traveling speed. According to this aspect, when the moving body moves at a high speed, the driver can visually recognize the presence of the object existing far away.

In another aspect of the virtual image display device, the virtual image display device includes an acquisition unit that acquires information related to a remaining energy level of the moving body, and the limiting unit has the remaining energy level less than a predetermined value, and When an energy supply facility is included in the restriction range, display of the mark image indicating the energy supply facility is not restricted. According to this aspect, the virtual image display device can make the driver positively recognize the energy supply facility when the remaining energy of the moving body is small.

In another preferred embodiment of the present invention, there is provided a control method executed by a virtual image display device, wherein a mark image indicating an object is displayed as a virtual image at a position corresponding to the object so as to overlap an actual landscape. Among the objects within the range in which the mark image including the moving direction of the moving body and the mark image including the moving direction of the moving object are to be displayed, the objects existing within the limit range set in the direction away from the moving direction A restriction step for restricting the display of the mark image for, and the restriction step changes the restriction range in accordance with the traveling speed of the moving body. By executing this control method, the virtual image display device restricts the display of objects existing in the direction deviating from the traveling direction according to the traveling speed of the moving object, and marks the positions that are difficult to see during traveling. The display of images can be suitably limited.

In still another embodiment of the present invention, the display is a program executed by a computer and displays a mark image indicating an object on a display unit as a virtual image at a position corresponding to the object so as to overlap an actual landscape. The control means and the mark for an object existing within a limited range set in a direction away from the traveling direction among objects existing within a range to display the mark image including the traveling direction of the moving object The computer is made to function as a limiting unit that limits display of an image, and the limiting unit changes the limiting range in accordance with a traveling speed of the moving body. By executing this program, the computer restricts the display of objects that exist in a direction away from the traveling direction according to the traveling speed of the moving object, and displays mark images at positions that are difficult to see while traveling. Can be suitably limited. Preferably, the program is stored in a storage medium.

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

[Schematic configuration]
(1) System Configuration FIG. 1 shows a configuration example of a display system 100 according to the embodiment. As shown in FIG. 1, the display system 100 is mounted on a vehicle Ve, and includes a navigation device 1 and a head-up display 2.

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 the vehicle Ve, a portable navigation device (PND), or a mobile terminal such as a smartphone.

The head-up display 2 generates map information including the current position, route guidance information, an image for guiding the facility, a traveling speed, and an image for displaying other information for assisting driving (also referred to as a “guidance image”). This is a device that visually recognizes a guide image as a virtual image from the position (eye point) of the driver's eyes. The head-up display 2 is supplied from the navigation device 1 with various information used for navigation processing such as vehicle position information, information on guidance routes, and map information including facility information. The head-up display 2 may receive the guidance image generated by the navigation device 1 instead of generating the guidance image, and cause the driver to visually recognize the guidance image as a virtual image.

In addition, when the navigation apparatus 1 is a mobile terminal such as a smartphone, the navigation apparatus 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.

(2) 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 the acceleration of the vehicle Ve, and outputs acceleration data. The angular velocity sensor 12 is composed of, for example, a vibrating gyroscope, detects the angular velocity of the vehicle Ve when the direction of the vehicle Ve 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 wheel of the vehicle Ve.

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 (also referred to as “current position”) of the vehicle Ve 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 or the like, and stores various data used for navigation processing such as map data. The map data includes road data represented by links corresponding to roads and nodes corresponding to road connecting portions (intersections), facility information about each facility, and the like. The facility information includes, for example, facility mark information for each registered facility and location information of the facility.

The communication device 38 is configured by, for example, an FM tuner, a beacon receiver, a mobile phone, a dedicated communication module, and the like, and via a communication interface 37, traffic jams distributed from a VICS (registered trademark, Vehicle Information Communication System) center Receive road traffic information such as traffic information and other information. In addition, the communication device 38 transmits to the head-up display 2 various information used for navigation processing, such as current position information acquired from the GPS receiver 18, information such as vehicle speed pulses acquired from the autonomous positioning device 10, and map data. To do.

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.

(3) 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 the present embodiment includes a light source unit 4 and a combiner 9. The vehicle Ve includes a front window 25, a ceiling portion 27, a hood 28, a dashboard 29, and the like. It is attached.

The light source unit 4 is installed on the ceiling portion 27 in the passenger compartment via the

support members

5a and 5b, and emits light constituting a guide image indicating information for assisting driving toward the combiner 9 so that the combiner 9 The driver is caused to visually recognize the virtual image “Iv”.

The combiner 9 projects the display image emitted from the light source unit 4 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 combiner 9 is an example of the “display unit” in the present invention.

(4) Configuration of Light Source Unit FIG. 4 is a diagram schematically showing the configuration of the light source unit 4. As illustrated in FIG. 4, the light source unit 3 includes a light source 54, a control unit 55, and a communication unit 56.

The light source 54 includes, for example, red, blue, and green laser light sources, and emits light (also referred to as “display light”) that constitutes a display image to be irradiated to the combiner 9 based on the control of the control unit 55. .

The communication unit 56 receives various information used for the navigation processing from the navigation device 1 based on the control of the control unit 55. For example, the communication unit 56 receives guide route information from the navigation device 1 when a destination is set. Further, the communication unit 56 receives from the navigation device 1 information on the current position measured by the GPS receiver 18 and information on the vehicle speed measured by the distance sensor 13 at predetermined intervals. In addition, the communication unit 56 receives, from the navigation device 1, information on facilities existing in the forward scenery visually recognized through the combiner 9 as POI (Point of Interest) information.

The control unit 55 includes a CPU, a ROM that stores a control program executed by the CPU, data, and the like, and a RAM that sequentially reads and writes various data as a work memory when the CPU operates. Control.

In the present embodiment, the control unit 55 recognizes the position and traveling direction of the vehicle Ve based on the measurement information of the GPS receiver 18 received from the navigation device 1 and the measurement information of the autonomous positioning device 10. Then, the control unit 55 is within an area within a predetermined angle from the traveling direction of the vehicle Ve and within a predetermined distance (also referred to as “distance r”) from the vehicle Ve (also referred to as “display target area AT”). Is recognized as an area where there is a facility to display the mark image. And the control part 55 produces | generates the mark image which shows the plant | facility in display object area AT as a guidance image, and makes the light source 54 radiate | emit the light which comprises these guidance images. Thereby, the control part 55 displays a guide image on the combiner 9 so that it may overlap with a driver | operator's front scenery.

Further, the control unit 55 provides an area (also referred to as “restricted range AR”) for restricting the display of the mark image based on the traveling speed of the vehicle Ve in the display target area AT, and corresponds to facilities in the restricted range AR. Restrict the display of mark images to be used. In this way, the control unit 55 functions as a “display control unit”, a “limitation unit”, and a computer that executes the program.

[Display Mark Image]
Next, a display method of the mark image executed by the control unit 55 will be described. Schematically, the control unit 55 increases the limit range AR according to the traveling speed of the vehicle Ve, considering that the visual field of the driver becomes narrower as the traveling speed of the vehicle Ve increases. Thereby, the control part 55 suppresses suitably the display of an unnecessary mark image.

Hereinafter, an area that is not the restricted range AR in the display target area AT is referred to as “non-restricted range ANR”. The control unit 55 sets the area within the predetermined angle including the traveling direction and within the distance r to the non-restricted range ANR.

(1) Process Overview FIG. 5 is a flowchart illustrating an overview of the mark image display process of the control unit 55 according to the present embodiment. The control unit 55 repeatedly executes the process of the flowchart of FIG.

First, the control unit 55 determines whether or not the traveling speed of the vehicle Ve is equal to or lower than a predetermined speed (step S101). Here, the “predetermined speed” is, for example, a threshold value for determining whether or not the driving speed is sufficient for the driver to such an extent that the driver's field of view is not narrowed. Is set. Then, when the traveling speed of the vehicle Ve is equal to or lower than the predetermined speed (step S101; Yes), the control unit 55 sets the entire display target area AT to the unrestricted range ANR (step S102). That is, in this case, the control unit 55 does not set the limited range AR in the display target area AT. As described above, when the vehicle Ve is stopped or traveling at a low speed, the driver has a room for visually recognizing the mark image of the facility away from the traveling direction. Therefore, the control unit 55 performs the mark image corresponding to the facility existing in a wide range. Is displayed.

On the other hand, when the traveling speed of the vehicle Ve is higher than the predetermined speed (step S101; No), the control unit 55 sets the limit range AR at both ends of the display target area AT according to the traveling speed of the vehicle Ve (step S103). ). That is, the control unit 55 increases the limit range AR and reduces the non-limit range ANR as the traveling speed of the vehicle Ve increases. In this case, the control unit 55 may change the restricted range AR and the non-restricted range ANR stepwise according to the travel speed of the vehicle Ve, or may change it continuously. In the latter case, for example, the control unit 55 changes the limit range AR and the non-limit range ANR in proportion to the traveling speed of the vehicle Ve. Note that the control unit 55 may provide an upper limit for the size of the limit range AR so that the limit range AR and the non-limit range ANR are constant when the traveling speed of the vehicle Ve is equal to or higher than a predetermined upper limit speed. Good.

Next, the control unit 55 normally displays the mark image of the facility within the non-restricted range ANR and restricts the display of the mark image of the facility within the restricted range AR (step S104). In this case, based on the facility information transmitted from the navigation device 1, the control unit 55 recognizes the position of the facility existing in the restricted range AR and the mark image indicating the facility mark corresponding to each facility, and each facility The mark image of the facility is displayed on the combiner 9 in association with the position on the combiner 9. Moreover, the control part 55 displays the mark image of the plant | facility in the restriction | limiting range AR on the combiner 9 by the aspect which is not displayed or is not conspicuous. A display example of step S104 will be described with reference to FIGS.

(2) Display Example Next, a display example of the mark image of the control unit 55 according to the present embodiment will be described with reference to FIGS. Hereinafter, among the angles formed by the unrestricted range ANR, the left angle from the traveling direction of the vehicle Ve is referred to as “left angle θl”, and the right angle from the traveling direction of the vehicle Ve is referred to as “right angle θr”.

(2-1) When Traveling Speed is Below Predetermined Speed FIG. 6A shows the case where the traveling speed of the vehicle Ve is less than the predetermined speed (here 20 km / h) that is the threshold value of step S101 in FIG. The setting range of the display target area AT on the map representing the periphery of the current position of the vehicle Ve is shown. Each facility “A” to “L” shown in FIG. 6A has a facility mark of one alphabetic character “A” to “L” for convenience of explanation.

In this case, the control unit 55 recognizes that the traveling speed of the vehicle Ve is less than 20 km / h based on the speed information of the vehicle Ve received from the navigation device 1. In this case, the control unit 55 determines that the traveling speed of the vehicle Ve is sufficiently low, and sets the entire display target area AT to the non-restricted range ANR based on step S102 of FIG.

Specifically, in FIG. 6A, the control unit 55 recognizes the unrestricted range ANR by setting the left angle θl and the right angle θr to 70 ° and setting the distance r to 200 m. . Then, the control unit 55 selects each facility as shown in FIG. 6A based on the location information of the facility, the traveling direction of the vehicle Ve, and the current location information included in the facility information supplied from the navigation device 1. Recognize the positional relationship with the unrestricted range ANR. Then, the control unit 55 recognizes that the facilities D, E, and G to K exist within the non-restricted range ANR.

FIG. 6 (B) is an example of a front view visually recognized from the driver's seat in the example of FIG. 6 (A). In FIG. 6B, the control unit 55 sets each facility so as to indicate the position on the combiner 9 of each facility D, E, G to K existing within the non-restricted range ANR (that is, the display target area AT).

Mark images

81D, 81E, 81G to 81K representing the facility marks with balloons are displayed. In this case, the control unit 55 recognizes the positional relationship between each facility and the vehicle Ve on the map as shown in FIG. 6A, and then exists within the unrestricted range ANR based on a known viewpoint conversion process. The position on the combiner 9 where the driver visually recognizes each facility to be identified is specified. And the control part 55 displays on the combiner 9 the mark image 81 which displayed the alphabet used as the facility mark contained in the facility information of each facility in the balloon at the position corresponding to the position of each specified facility. Yes. At this time, the control unit 55 may display a smaller mark image 81 corresponding to a facility located far from the current position on the combiner 9.

As described above, the control unit 55 displays the mark image 81 of the facility existing in a wide area in the front scenery when the vehicle is stopped or the traveling speed of the vehicle Ve is low.

(2-2) When Traveling Speed is Greater Than Predetermined Speed FIG. 7A shows the vicinity of the current position of the vehicle Ve when the traveling speed of the vehicle Ve is faster than the predetermined speed that is the threshold value of step S101 in FIG. The setting range of the limited range AR and the non-limited range ANR on the map is shown.

In this case, the control unit 55 recognizes that the traveling speed of the vehicle Ve is 60 km / h or more based on the speed information of the vehicle Ve received from the navigation device 1. Therefore, in this case, the control unit 55 sets the limit range AR based on step S103 in FIG. Specifically, in FIG. 7A, the controller 55 sets the left angle θl and the right angle θr to 20 °, respectively, so that the limit range AR corresponding to the angle 50 ° from each end of the display target area AT is set. It is set. As a result, unlike the example of FIG. 6A, the facilities G, J, and K deviate from the non-restricted range ANR and are located in the restricted range AR.

FIG. 7 (B) is an example of a front view visually recognized from the driver's seat in the example of FIG. 7 (A). A dotted mark image 81 in FIG. 7B indicates a mark image that is not displayed or has a low luminance.

In FIG. 7B, the control unit 55 displays the

mark images

81D, 81E, 81I, and 81H of the facilities D, E, I, and H existing in the non-restricted range ANR as in the case of FIG. It is displayed. On the other hand, the control unit 55 displays the

mark images

81G, 81J, and 81K of the facilities G, J, and K existing in the restricted range AR in a non-displayed or inconspicuous manner with lower brightness than the other mark images 81. is doing.

As described above, in the example of FIG. 7, when the traveling speed of the vehicle Ve is fast and the driver's field of view is narrow, the control unit 55 displays only the mark image 81 corresponding to the facility at a position close to the driver's line-of-sight direction. Display relatively prominently. Thereby, the control part 55 can suppress suitably that a driver | operator removes attention by the mark image which deviated from the advancing direction.

As described above, the head-up display 2 according to this embodiment includes the light source unit 4 and the combiner 9. The control unit 55 of the light source unit 4 displays a mark image indicating the facility on the combiner 9 as a virtual image Iv at a position corresponding to the facility so as to overlap the actual scenery. At this time, the control unit 55, among the facilities existing in the display target area AT where the mark image including the traveling direction of the vehicle Ve should be displayed, the facilities existing in the restricted range AR set in the direction away from the traveling direction. Restrict display of mark images for. As a result, the head-up display 2 can suitably limit the display of the mark image at a position that is difficult to view as the driver's field of view narrows according to the traveling speed of the vehicle Ve.

[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)
Instead of displaying the mark images corresponding to the facilities in the limited range AR in a non-displayed or inconspicuous manner, the control unit 55 shifts these mark images to positions on the combiner 9 corresponding to the non-limited range ANR. It may be displayed.

FIG. 8 shows a display example of the combiner 9 according to the modified example when the vehicle Ve is present at the same point as the example of FIG. In this case, the control unit 55 moves the display positions of the

mark images

81G, 81J, and 81K corresponding to the facilities G, J, and K in the restricted range AR to positions on the combiner 9 where the unrestricted range ANR is visually recognized. I am letting. In this case, for example, the control unit 55 refers to a predetermined map and the like on the combiner 9 where the unrestricted range ANR is visually recognized from the left angle θl and the right angle θr set according to the traveling speed of the vehicle Ve. The range is recognized, and the display position of each

mark image

81G, 81J, 81K is determined. By doing in this way, the control part 55 drives the mark image 81 showing the facility which exists in the restriction | limiting range AR, even when it is a case where a driver | operator's visual field becomes narrow according to the travel speed of the vehicle Ve. Display within the visual field of the person.

In the example of FIG. 8, the control unit 55 may display the

mark images

81G, 81J, and 81K with the display positions shifted in a manner different from the mark image 81 of the facility existing in the unrestricted range ANR. For example, the control unit 55 makes the color and brightness of each of the

mark images

81G, 81J, and 81K different from the mark image 81D that indicates a facility within the unrestricted range ANR. As a result, the driver can suitably distinguish the

mark images

81G, 81J, 81K from the mark image 81 of the facility existing in the unrestricted range ANR.

Further, in the example of FIG. 8, the control unit 55 displays the mark balloons 81G, 81J, 81K with the display positions shifted so as to indicate the positions of the corresponding facilities. Thus, the driver can preferably check the facilities G, J, and K in the direction deviating from the traveling direction by the

mark images

81G, 81J, and 81K without diverting the line of sight from the traveling direction even during traveling. In addition, instead of extending the tip of the balloons of the

mark images

81G, 81J, 81K whose display positions are shifted, the control unit 55 displays arrows indicating the positions of the facilities indicated by these mark images 81 in the mark images 81G, You may add to 81J and 81K.

(Modification 2)
When the remaining fuel amount of the vehicle Ve is less than the predetermined value, the control unit 55 displays the mark image corresponding to the fuel supply facility (for example, a gas station) existing within the restriction range AR without restriction. Also good.

FIG. 9 shows a display example of the combiner 9 according to this modification. In this example, it is assumed that the facility K existing in the restricted range AR is a gas station.

First, the control unit 55 receives information on the remaining amount of fuel in the fuel tank of the vehicle Ve directly from the vehicle Ve or via the navigation device 1 using a communication protocol such as CAN. And the control part 55 judges that the fuel remaining amount of the vehicle Ve became less than predetermined value, and judges that fuel replenishment is required. In this case, the control unit 55 determines that the facility K existing in the restricted range AR is a gas station based on the facility information, and uses the mark image 81K corresponding to the facility K as the mark image 81 in the non-restricted range ANR. As with, display without limitation. By doing in this way, the control part 55 can make a driver | operator recognize suitably presence of a fuel supply facility, when fuel supply is required.

In addition, when the vehicle Ve is an electric vehicle, the control unit 55 may determine whether or not the remaining amount of the battery of the vehicle Ve is less than a predetermined value. Then, when the remaining battery level is less than the predetermined value, the control unit 55 displays the mark image 81 corresponding to the charging facility existing in the restricted range AR without restriction as with the mark image 81 in the non-restricted range ANR. To do. In this modification, the remaining fuel amount and the remaining battery amount are examples of “remaining energy amount”, and the fuel stand and the charging facility are examples of “energy supply facility”. The control unit 55 is an example of the “acquisition unit” in the present invention.

(Modification 3)
Instead of a mode in which the left angle θl and the right angle θr are the same angle, and the non-restricted range ANR and the limited range AR are bilaterally symmetric with respect to the traveling direction, the limited range AR in the direction in which it is difficult to stop is widened. The left angle θl and the right angle θr may be different. For example, when the vehicle Ve is on the left side, it is often difficult to stop at a facility on the right side of the road across the opposite lane. Therefore, the control unit 55 sets the left angle θl to be larger than the right angle θr. Also good.

FIG. 10A shows the setting ranges of the non-restricted range ANR and the limited range AR on the map representing the periphery of the current position according to the present modification. FIG. 10B is an example of a front view visually recognized from the driver's seat in the example of FIG. As shown in FIG. 10A, in this case, the control unit 55 sets the left angle θl (= 30 °) to three times the right angle θr (= 10 °). As a result, the non-restricted range ANR is biased to the left from a position that is symmetric about the traveling direction of the vehicle Ve. As a result, as shown in FIG. 10B, the control unit 55 displays the mark images 81 of the facilities J, H, and D existing on the traveling lane side of the traveling road 84A as usual, and is opposite to the road 84A. The display of the mark images 81 of the facilities E, I, and K existing on the lane side is limited. Thereby, the control part 55 can display only the mark image 81 corresponding to the facility where it is easy to drop in, and can make the driver visually recognize the mark image 81 without removing the line of sight from the traveling direction.

(Modification 4)
The control unit 55 may enlarge the display target area AT and the like by increasing the distance r stepwise or continuously as the traveling speed of the vehicle Ve increases. In general, if the traveling speed of the vehicle Ve increases, the traveling distance per unit time becomes longer. Therefore, it is necessary to display information on facilities farther away. Therefore, according to the present modification, the control unit 55 allows the driver to visually recognize the presence of a facility located far away during high-speed movement.

FIG. 11A shows a setting range of the display target area AT when the traveling speed of the vehicle Ve is 60 km / h or higher, which is faster than the predetermined speed that is the threshold value in step S101 in FIG. FIG. 11B is an example of a front view visually recognized from the driver's seat in the example of FIG.

In the example of FIG. 11A, the control unit 55 sets the distance r to 300 m that is 100 m longer than when the traveling speed of the vehicle Ve is slower than the predetermined speed (see FIG. 6A). Thereby, the non-restricted range ANR is expanded, and the facilities A and B are newly included in the non-restricted range ANR. Therefore, in FIG. 11B, the control unit 55 displays the

mark images

81A and 81B for the facilities A and B in association with the facilities A and B, respectively. As the distance r becomes longer, the limited range AR is also expanded, and in the example of FIG. 11, the facilities C, F, and L are newly included in the limited range AR.

As described above, when the distance r is increased in accordance with the traveling speed of the vehicle Ve, the number of facilities included in the display target area AT increases, while the facility mark image 81 in the direction deviating from the traveling direction (FIG. 11 ( In B), the display of the

mark images

81C, 81F, 81L) is restricted. Therefore, according to the present modification, the control unit 55 can appropriately allow the driver to visually recognize the existence of a facility located far away when moving at a high speed while suitably preventing the display as a whole from being miscellaneous.

(Modification 5)
In FIG. 3, the head-up display 2 has a combiner 9 and makes the driver visually recognize the virtual image Iv based on the emitted light of the light source unit 4 reflected by the combiner 9. However, the configuration to which the present invention is applicable is not limited to this. Instead of this, the head-up display 2 may not have the combiner 9 and may allow the driver to visually recognize the virtual image Iv based on the emitted light of the light source unit 4 reflected by the windshield 25. In this case, the windshield 25 is an example of the “display unit” in the present invention.

Further, the position of the light source unit 4 is not limited to the case where it is installed on the ceiling portion 27. Instead of this, the light source unit 4 may be installed on the dashboard 29 or installed inside the dashboard 29. When installed on the dashboard 29, the combiner 9 is provided on the dashboard 29, or light is directly reflected from the light source unit 4 on the windshield 25 to allow the driver to recognize the virtual image Iv. When installed in the dashboard, the dashboard 29 is provided with an opening for allowing light to pass through the combiner 9 or the windshield 25.

Further, the display system 100 may have a head mounted display for mounting instead of the head up display 2 mounted on the vehicle Ve as a virtual image display device. In this case, the head-mounted display may cause the mark image of the facility existing in the forward scenery to be visually recognized as the virtual image Iv when the user walks. Even in this case, the head mounted display sets the limit range AR according to the traveling speed of the vehicle Ve and limits the display of the mark image in the limit range AR according to the flowchart of FIG. It is possible to prevent a mark image that is out of the range from being displayed unnecessarily.

(Modification 6)
The system controller 20 may execute part of the processing of the control unit 55 described in the embodiment.

For example, the system controller 20 executes step S102 or step S103 of the flowchart of FIG. 5 instead of the control unit 55 based on the traveling speed of the vehicle Ve recognized by the self-supporting positioning device 10 or the like, so that the limit range AR and non-range Set the limit range ANR. In step S104, the system controller 20 has restricted the instruction signal indicating that the mark image of the facility belonging to the non-restricted range ANR should be displayed in the normal display mode, and the mark image of the facility belonging to the restricted range AR. An instruction signal indicating that the display mode should be displayed or hidden is transmitted to the light source unit 4. And the control part 55 of the light source unit 4 produces | generates the mark image of each facility which should be displayed based on the received instruction | indication signal, and makes the light source 54 display on the combiner 9 as the virtual image Iv. In another example, the system controller 20 may generate an image signal to be input to the light source 54 and transmit the image signal to the light source unit 4.

Also according to this aspect, the display system 100 sets the limit range AR according to the traveling speed of the vehicle Ve, and restricts the display of the mark image within the limit range AR, thereby eliminating the need for a mark image deviating from the traveling direction. It can be prevented from being displayed. In this modification, the system controller 20 is an example of “display control means”, “limitation means”, and “computer” in the present invention.

Further, the head-up display 2 may have a part or all of the functions of the navigation device 1. In this case, the light source unit 4 may include, for example, a memory that stores map data, sensors such as a GPS receiver, and the like.

(Modification 7)
The head-up display 2 is not limited to displaying a mark image on a facility, and may display a mark image on an arbitrary object. In this case, the target object may be a natural object such as a pedestrian or a river.

DESCRIPTION OF SYMBOLS 1 Navigation apparatus 2 Head-up display 4 Light source unit 9 Combiner 25 Windshield 28 Bonnet 29 Dashboard 100 Display system

Claims

Display control means for causing the display means to display a mark image indicating the object as a virtual image at a position corresponding to the object so as to overlap the actual landscape;
Displaying the mark image for an object existing within a limit range set in a direction away from the traveling direction among objects existing within a range where the mark image including the traveling direction of the moving object is to be displayed. Limiting means to limit;
With
The virtual image display device characterized in that the limiting means changes the limiting range according to a traveling speed of the moving body.
2. The virtual image display device according to claim 1, wherein the restriction means widens the restriction range as the traveling speed increases.
3. The virtual image according to claim 1, wherein the restriction unit erases the mark image corresponding to the restriction range or displays the mark image in a less conspicuous manner than a mark image that does not correspond to the restriction range. Display device.
The restriction means moves the mark image corresponding to the restriction range to the traveling direction side so as to be displayed at a position corresponding to a range where the mark image outside the restriction range is to be displayed. The virtual image display device according to claim 1 or 2.
The virtual image display device according to any one of claims 1 to 4, wherein the restriction means sets the restriction range on the opposite lane side wider than the lane side on which the moving body travels.
The virtual image display device according to any one of claims 1 to 5, wherein the display control means widens a range in which the mark image should be displayed according to the traveling speed.
Comprising an acquisition means for acquiring information on the remaining energy of the mobile body;
The restriction means does not restrict display of a mark image indicating the energy supply facility when the remaining amount of energy is less than a predetermined value and an energy supply facility is included in the restriction range. Item 7. The virtual image display device according to any one of Items 1 to 6.
A control method executed by the virtual image display device,
A display control step of displaying a mark image indicating the target object on the display means as a virtual image at a position corresponding to the target object so as to overlap the actual landscape;
Displaying the mark image for an object existing within a limit range set in a direction away from the traveling direction among objects existing within a range where the mark image including the traveling direction of the moving object is to be displayed. A limiting process to limit;
With
The control method characterized in that the limiting step changes the limiting range in accordance with a traveling speed of the moving body.
A program executed by a computer,
Display control means for causing the display means to display a mark image indicating the object as a virtual image at a position corresponding to the object so as to overlap the actual landscape;
Displaying the mark image for an object existing within a limit range set in a direction away from the traveling direction among objects existing within a range where the mark image including the traveling direction of the moving object is to be displayed. Causing the computer to function as limiting means for limiting,
The restriction means changes the restriction range in accordance with a traveling speed of the moving body.
A storage medium storing the program according to claim 9.