JP2006242859A - Information display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information display device for a vehicle, enabling a driver to recognize safely and easily a building outside the vehicle. <P>SOLUTION: A navigation device 1 for the vehicle is mounted on the vehicle C and displays a building information display DI on a windshield WS by a windshield display device 8 for making the driver DR to recognize the building BL safely and easily. The building information display DI includes, for example, a building BL name, and is displayed in a domain of the windshield WS close to the building BL as a view from the driver DR. Hereby, the driver DR can grasp easily the position of the building BL and its information (name or the like), without taking the eyes off the direction that should be watched. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an information display device for a vehicle that displays building information visible to a driver.

  In the vehicle navigation apparatus, a method of guiding a conspicuous building (landmark) as a landmark when performing route guidance to a driver is used. For example, a landmark is displayed on a map on a display installed in the vicinity of the dashboard, and guidance is given by transmitting to the driver by voice that the landmark is approaching.

JP 2004-037260 A Japanese Patent Laid-Open No. 7-257228

  However, such guidance (notification) is good when the driver knows the landmark, but when the driver does not know the landmark, the position and characteristics of the landmark are first recognized from the display in a short time. After that, it is necessary to find the landmark from the scenery outside the car. This operation causes the driver's line of sight to move in various directions, which causes an obstacle to safe driving.

  Moreover, in patent document 1, although the technique of detecting a driver | operator's eyes | visual_axis and notifying the information of the building which the driver | operator is visually recognizing by audio | voice is disclosed, only what is notified by audio | voice is made into object. It cannot be easily recognized whether it is a building (landmark).

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle information display device that allows a driver to recognize a building outside the vehicle safely and easily.

Means for Solving the Problems and Effects of the Invention

  In order to solve the above-described problem, the vehicle information display device according to claim 1 includes map data storage means for storing 3D map data, and building information storage means for storing building information relating to a building included in the 3D map data. A position detection means for detecting the current position of the vehicle, an orientation detection means for detecting the traveling direction of the vehicle, and a simulation assumed that the driver is viewing from the three-dimensional map data based on the current position and the traveling direction of the vehicle A simulated scene image calculation unit that calculates a scene image and identifies a building included in the simulated scene image; a building information acquisition unit that acquires building information related to the building included in the simulated scene image from a building information storage unit; Windshield display means for displaying video on the windshield of the vehicle, and building information about the building included in the simulated scene image is in the vicinity of the building as seen from the driver Characterized in that it comprises a display control unit for controlling the windshield display means to display the area of the windshield.

  According to the present invention, an image of a simulated scene assumed to be viewed by the driver from the three-dimensional map data (hereinafter referred to as a simulated scene image) is calculated, and based on this, building information about the building is obtained from the driver. By displaying in the windshield area in the vicinity of the building as seen, the driver can recognize the building safely and easily without removing his line of sight from the direction to watch even during driving.

  The vehicle information display device according to claim 2 is the vehicle information display device according to claim 1, wherein the driver imaging means for photographing the eyes of the driver, and the driver's line of sight from the image obtained by the driver imaging means. A sight direction detection unit that detects a direction, and the simulated scene image calculation unit simulates that the driver is viewing from the three-dimensional map data based on the current position and traveling direction of the vehicle and the driver's sight direction. A scene image is calculated, and a building included in the simulated scene image is specified. According to this, since the simulated scene image is calculated based on the detected driver's line-of-sight direction, the display position of the building information can be set with high accuracy.

  The vehicle information display device according to claim 3 is the vehicle information display device according to claim 1 or 2, wherein the driver's line-of-sight direction and vehicle-side imaging obtained by the vehicle-side imaging means for photographing the outside of the vehicle and the line-of-sight detection unit. A real scene image specifying unit that specifies a real scene image viewed by the driver from an image obtained by the means, and a scene image verification unit that compares the simulated scene image with the real scene image and corrects the position of the simulated scene image The display control unit performs display control based on the simulated scene image whose position is corrected by the scene image matching unit. According to this, since the image of the scene that the driver actually sees (hereinafter referred to as the actual scene image) is obtained by the outside imaging means that captures the outside of the vehicle, it is closer to the scene that the driver actually sees. The display position of the building information can be accurately set by correcting the position by matching the simulated scene image.

  In the vehicle information display device according to claim 4, in the vehicle information display device according to claim 3, the display control unit overlaps the scene viewed from the driver with the actual scene image obtained by the actual scene image specifying unit. To display on the windshield. This makes it easier for the driver to recognize the building.

  The vehicle information display device according to claim 5 is the vehicle information display device according to any one of claims 1 to 3, wherein the display control unit drives the simulated scene image obtained by the simulated scene image calculation unit. Display on the windshield so that it overlaps the scene seen by the person. According to this, it is possible to make it easier for the driver to recognize the building even in a situation with poor visibility such as in the rain or at night.

  According to a sixth aspect of the present invention, there is provided the vehicle information display device according to the fourth or fifth aspect, further comprising selection means for selecting whether to display an actual scene image or a simulated scene image. According to this, the driver can set the display of the actual scene image or the simulated scene image on the windshield as necessary.

  The vehicle information display device according to claim 7, wherein the simulated scene image calculation unit includes the building included in the simulated scene image from the current position of the vehicle. The display control unit hides the building information when the distance is equal to or less than a predetermined value. According to this, if the distance from the current position of the vehicle to the building is too close, the driver can recognize the building without depending on the building information, and the display may be in the way, so the distance is predetermined. If the building information is not displayed when the value is less than or equal to the value, it is safer for the driver and the display is not bothersome.

  The vehicle information display device according to claim 8, wherein the simulated scene image calculation unit includes a building included in the simulated scene image from the current position of the vehicle. The display control unit hides the building information when the distance is greater than or equal to a predetermined value. According to this, if the distance from the current position of the vehicle to the building is too far, the driver is not in a state where the building can be recognized in the first place, and if the building information is displayed in such a state, it will be in the way Therefore, when the distance is equal to or greater than the predetermined value, the driver does not bother to display the building information by not displaying the building information.

  The vehicle information display device according to claim 9, wherein the simulated scene image calculation unit includes the building included in the simulated scene image from the current position of the vehicle. The display control unit displays building information only when the distance is within a predetermined range. According to this, building information can be displayed only in a range where the driver can easily recognize the building.

  A vehicle information display device according to a tenth aspect is the vehicle information display device according to any one of the seventh to ninth aspects, further comprising setting means for setting a predetermined range or a predetermined value. According to this, the driver | operator can set the predetermined range or predetermined value used as the conditions for displaying building information as needed.

  The vehicle information display device according to claim 11 is the vehicle information display device according to any one of claims 1 to 10, wherein the display control unit is located in a windshield area that is empty when viewed from the driver. Display information. According to this, since the building information is displayed in an area that is empty when viewed from the driver, it is possible to prevent the display from interfering with driving for the driver.

  In the vehicle information display device according to a twelfth aspect, in the vehicle information display device according to any one of the first to eleventh aspects, the display control unit transparently displays the building information. According to this, since the building information is transparently displayed, it is possible to prevent the display from obstructing driving for the driver.

  In the vehicle information display device according to claim 13, in the vehicle information display device according to any one of claims 1 to 12, the display control unit preferentially displays the building information display position on the windshield outer frame side. And According to this, since the building information is displayed outside the driver's field of view, it is possible to prevent the display from interfering with driving for the driver.

  15. The vehicle information display device according to claim 14, wherein the simulated scene image calculation unit includes a building included in the simulated scene image from the current position of the vehicle. The display control unit changes the level of detail of the building information according to the distance. According to this, for example, when the distance to the building is shortened, the driver can obtain necessary information according to the distance, such as displaying detailed building information.

  The vehicle information display device according to claim 15, wherein the display control unit includes the individual facility in the building included in the simulated scene image and the number of floors in the vehicle information display device according to any one of claims 1 to 14. The information concerning is included and displayed in the building information. According to this, the driver can also obtain information on the building.

  In the vehicle information display device according to claim 16, in the vehicle information display device according to any one of claims 1 to 15, the display control unit overlaps the buildings included in the simulated scene image when viewed from the driver. In this case, the building information related to the building on the near side is preferentially displayed. According to this, it is possible to make the driver recognize only the building display relating to the building that is visible to the driver.

  In the vehicle information display device according to claim 17, in the vehicle information display device according to any one of claims 1 to 16, the display control unit is configured to display the building information and the building as viewed from the driver. A contour emphasis display for emphasizing the contour is displayed in the area of the windshield. According to this, since the outline of the building is emphasized, the driver can more easily recognize the building.

  The vehicle information display device according to claim 18 is the vehicle information display device according to any one of claims 1 to 17, further comprising selection means for selecting whether to display the building information. According to this, the driver can display the building information on the windshield as necessary.

(1) Vehicle Information Display Device Hereinafter, a vehicle navigation device as an embodiment of the vehicle information display device of the present invention will be described with reference to the drawings. A vehicle navigation device 1 (hereinafter simply referred to as a navigation device 1) is attached to a vehicle C as shown in FIG.
In order for the driver DR to recognize the building BL safely and easily, the building information display DI is displayed on the windshield WS by the windshield display device 8 (see FIG. 8). Hereinafter, a detailed configuration and operation of the navigation device 1 will be described.

(2) Device Configuration A configuration of the navigation device 1 will be described. FIG. 1 is a diagram schematically illustrating the navigation device 1 attached to the vehicle C, and FIG. 2 is an electrical block diagram of the navigation device 1. The navigation device 1 includes a position detector 2, a camera outside the vehicle 61, a line-of-sight camera 62, an operation switch group 41, a remote control terminal 43, a remote control sensor 42, a display device 51, an audio output device 52, a windshield display device 8, a hard disk device (HDD). 3) and a control circuit 10 to which these are connected.

  The position detector 2 receives a GPS radio wave transmitted from a GPS satellite, calculates a parameter stored in the received GPS radio wave, acquires position data, and detects a direction based on geomagnetism. The geomagnetic sensor 22 that acquires the orientation data representing the detected orientation, calculates the orientation based on detecting the angular velocity, the gyroscope 23 that acquires the orientation data indicating the calculated orientation, detects the travel distance The distance sensor 24 is configured to acquire distance data indicating the detected distance, and each data acquired by the sensors is complemented to detect (specify) the current position of the vehicle and an accurate travel distance. Measure. With the above configuration, the position detector 2 functions as a position detection unit and an orientation detection unit of the present invention. Specifically, the current position of the vehicle is mainly detected by the GPS receiver 21, and the traveling direction of the vehicle is detected by the geomagnetic sensor 22 and the gyroscope 23.

  The vehicle outside camera 61 functions as a vehicle outside imaging means of the present invention, and is constituted by a CCD camera. The vehicle outside camera 61 captures the outside of the vehicle and inputs the captured image to the control circuit 10 as a video signal.

  The line-of-sight camera 62 functions as the driver image pickup means of the present invention, and is composed of a CCD camera. The line-of-sight camera 62 captures the eyes of the driver DR and inputs the captured image to the control circuit 10 as a video signal. The line-of-sight direction of the driver DR is detected based on this image.

  As the operation switch group 41, for example, a touch switch or a mechanical switch integrated with the display device 51 is used. The touch switch is composed of infrared sensors finely arranged vertically and horizontally on the screen of the display device 51. For example, when the infrared ray is cut off with a finger or a touch pen, the cut-off position becomes a dimensional coordinate value (X, Y ) Is detected. Alternatively, when a pressure-sensitive resistive film is arranged on the screen of the display device 51 and pressed with a finger or the like, the pressed position is detected as a dimension coordinate value (X, Y). A pointing device such as a mouse or a cursor may be used. The remote control terminal 43 also has a function equivalent to that of the operation switch group 41. With the above configuration, the operation switch group 41 and the remote control terminal 43 function as selection means and setting means of the present invention.

  The display device 51 is configured by a color liquid crystal display, and a vehicle current position mark input from the position detector 2, map data input from the HDD 3, and a guide route for displaying the map on the map. The additional data is superimposed and displayed, and route guidance settings and guidance during route guidance are displayed on this screen. The voice output device 52 includes an amplifier and a speaker, and outputs a synthesized voice for guidance when performing route guidance to a destination.

  The windshield display device 8 functions as the windshield display means of the present invention, and displays an image on the windshield WS of the vehicle C (see FIGS. 1 and 14). In the windshield display device 8, the display drive circuit 81 drives the liquid crystal panel 82 and the backlight 83 based on the display command output from the control circuit 10. Specifically, as shown in FIG. 14, the liquid crystal panel 82 and the backlight 83 are arranged on an instrument panel IP that extends from the lower side of the windshield WS to the inside of the vehicle. The liquid crystal panel 82 is supported by the opening portion of the instrument panel IP, and is driven by the display driving circuit 81 and displays a display image by receiving light from the backlight 83. The display image is incident on the windshield WS as display light and reflected toward the eyes of the driver DR seated on the driver's seat, thereby being captured by the driver DR as a virtual image.

  The hard disk device (HDD) 3 stores a navigation program (hereinafter referred to as a navigation program) 31p for operating the control circuit 10 (CPU 11). The navigation program 31p may be stored in the ROM 12 of the control unit 10. Further, the HDD 3 stores various data necessary for the operation of the navigation program 31p, that is, map data for map drawing (map database 32d), map matching data for improving position detection accuracy, and building (facility) information data. (Building information database 33d) and the like are stored, and data is input to the control unit 10 as required. These data may be stored in an information recording medium such as a CD-ROM, a DVD-ROM, or a memory card and input to the control unit 10 from a data input device. With the above configuration, the HDD 3 functions as the map data storage unit and the building information storage unit of the present invention.

  The map database 32d (map data storage means) built in the HDD 3 stores 2D map data (2D map data) 36 and 3D map data (3D map data) 37 displayed on the screen of the display device 51. is doing. Here, the three-dimensional map data 37 includes building shape data and height information in addition to normal map information (an image diagram of the three-dimensional map data 37 is shown in FIG. 5). It is used for the calculation of the image SVS (see FIGS. 5 and 6).

  The building information database 33d (building information storage means) built in the HDD 3 stores building information relating to buildings included in the map data 36 and 37. That is, the building information associates the name of the building and detailed information about each building (for example, the name of the facility included in each building, the number of floors in the building, the genre, etc.) with the position of the map data 36 and 37 on the map. It is memorized in the state.

  The control circuit 10 is configured as a normal computer, and includes a known CPU 11, ROM 12, RAM 13, input / output interface (I / O) 14, and a bus line 15 for connecting these configurations. The CPU 11 controls the navigation program 31p stored in the HDD 3 and various data. The navigation program 31p operates on the RAM 13 with the navigation program work memory 13w as a work area. With the above configuration, when the navigation program 31p is started by the CPU 11, the control circuit 10 has a gaze direction detection unit, a simulated scene image calculation unit, a building information acquisition unit, a display control unit, a real scene image identification unit, It functions as a scene image matching unit.

(3) Device Operation Next, the operation of the navigation device 1 will be described with reference to FIGS. 3 and 4. Here, FIG. 3 shows a building information display routine of the navigation program 31p executed by the CPU 11 of the navigation device 1 in a functional block diagram, and FIG. 4 shows the process in a flowchart.

(3-1) Main Routine The main routine of the navigation program 31p will be described. In a main routine (not shown), destination setting processing, route search processing, and route guidance processing are performed in order. First, in the destination setting process, the CPU 11 displays a menu for setting the destination on the screen of the display device 51 and prompts the driver to input the destination by the operation switch group 41. Next, in the route search process, when the CPU 11 detects that the driver inputs a destination using the operation switch group 41, the CPU 11 obtains the current position of the host vehicle C from the data obtained from the position detector 2, and the current position Search for the optimal route from the destination to the destination. As a method for automatically setting an optimal route, a method such as the Dijkstra method is known. Next, in the route guidance process, the route obtained by the route search process is displayed so as to overlap the road map on the screen of the display device 51, and an appropriate route is guided to the driver. In addition, the display device 51 and the voice output device 52 provide guidance during operation and notification of messages according to the operation state.

(3-2) Building Information Display Routine The building information display routine shown in FIGS. 3 and 4 will be described. The building information display routine is started when the CPU 11 detects an operation of the operation switch group 41 or the like during the route guidance process of the main routine. Specifically, when the driver cannot find a landmark or other building guided from the scenery outside the vehicle, he wishes to display the building information on the windshield WS and starts the operation with the operation switch group 41 or the like. Then, CPU11 detects it and a building information display routine is started.

  When the building information display routine is started, the CPU 11 detects the line-of-sight direction of the driver DR from the image obtained by the line-of-sight camera 62 (see FIG. 1) (step S1, line-of-sight direction detection unit 92). Specifically, the line-of-sight camera 62 captures the vicinity of the face of the driver DR, and the CPU 11 receiving the input of the image data specifies the eyeball region from the face image and also determines the eyeball center coordinates from the curvature of the eyeball shape. Ask for. On the other hand, a black eye (pupil) region is specified from the eyeball region, and a black eye center coordinate is also obtained. Then, the direction from the eyeball center coordinates to the black eye center coordinates is determined as the line-of-sight direction. For the detection of the line-of-sight direction, other methods such as a corneal reflection method using infrared light and a scleral reflection method can be used.

  Next, the CPU 11 obtains the current position and traveling direction of the vehicle C from the position detector 2 (step S2, simulated scene image calculation unit 91). Specifically, the current position of the vehicle C can be acquired mainly from the GPS receiver 21, and the traveling direction of the vehicle C can be acquired from the geomagnetic sensor 22 and the gyroscope 23.

  Next, as shown in the image diagram of FIG. 5, the CPU 11 determines the driver based on the current position AL and traveling direction CD of the vehicle C, and the line-of-sight direction LS of the driver DR from the three-dimensional map data 37 in the map database 32d. A simulated scene image SVS (see FIG. 6) assumed to be viewed by the DR is calculated (step S3, simulated scene image calculation unit 91). A simulated scene image SVS represented two-dimensionally as shown in FIG. 6 can be obtained from the three-dimensional map data 37 by a method such as ray tracing. As shown in FIG. 5, the range that becomes the simulated scene image SVS can be, for example, a range that spreads by a predetermined angle in the vertical and horizontal directions around the line-of-sight direction LS of the driver DR. Further, the depth can be divided by a predetermined length along the line-of-sight direction LS of the driver DR.

  Further, the CPU 11 specifies the building BL included in the simulated scene image SVS together with obtaining the simulated scene image SVS. Specifically, the position on the map of the building BL and the distance from the current position of the vehicle C to the building BL are specified. Here, although all the buildings BL included in the simulated scene image SVS may be specified, only the buildings BL satisfying a predetermined condition in the simulated scene image SVS may be specified. That is, for example, it is possible to specify only a building BL that is a certain height or higher as a landmark, or specify only a building BL that should be guided in route guidance.

  Next, CPU11 acquires the building information regarding the specified building BL from the building information database 33d (step S4, building information acquisition part 94). In the building information database 33d, building information is stored in a state associated with points on the map, so that building information of the building BL can be acquired based on the position of the building BL on the map identified in step 3 above. .

  On the other hand, the CPU 11 specifies the actual scene image AVS (see FIG. 7) viewed by the driver DR from the line-of-sight direction of the driver DR and the image obtained by the outside camera 61 (step S5, actual scene image specifying unit 93). . That is, the part in the line-of-sight direction of the driver DR in the image obtained by photographing with the outside camera 61 is specified as the actual scene image AVS viewed by the driver DR.

  Then, as shown in FIG. 7, the CPU 11 corrects the position of the simulated scene image SVS by matching (pattern matching) the simulated scene image SVS and the actual scene image AVS (step S6, scene image matching unit 95). The simulated scene image SVS is generated from the three-dimensional map data 37 and may be different from the scene actually seen by the driver DR. Therefore, the simulated scene image SVS is closer to the scene seen by the driver DR. By matching the simulated scene image SVS with the image AVS, the display position of building information on the windshield WS, which will be described later, can be improved.

  Next, the CPU 11 determines whether or not the distance from the current position of the vehicle C to the building BL is within a predetermined range (step S7, display control unit 96). For example, if the distance is too far, the driver DR may not be able to recognize the building BL. On the other hand, if the distance is too close, the driver DR can recognize and display the building BL without depending on the building information. However, the building display is displayed only when the distance is within a predetermined range. The predetermined range can be set by the operation switch group 41 or the like. If the distance is outside the predetermined range (step S7: No), the above-described simulation scene image calculation (step S3) and actual scene image acquisition (step S5) are continued.

  If the distance from the current position of the vehicle C to the building BL is within a predetermined range (step S7: Yes), the CPU 11 outputs a display command to the display driving circuit 81, and the building is applied to the windshield WS as shown in FIG. The information display DI is displayed (step S8, display control unit 96). The building information display DI includes, for example, the name of the building BL, and is displayed in the area of the windshield WS that is in the vicinity of the building BL when viewed from the driver DR. Accordingly, the driver DR can easily grasp the position of the building BL and its information (name, etc.) without diverting the line of sight from the direction to be watched. The display position of the building information display DI is determined in the simulated scene image SVS (see FIG. 6), and is reflected on the windshield WS. Here, since the position of the simulated scene image SVS is corrected by the scene image matching unit 95 as described above (see FIG. 7), the display position determined by the simulated scene image SVS is actually viewed by the driver DR. Link with the scene.

  As shown in FIG. 8, the building information display DI is displayed in an area of the windshield WS that is empty when viewed from the driver DR (empty area BS). The sky region BS can be specified from the simulated scene image SVS obtained from the three-dimensional map data 37. For example, when the simulated scene image SVS is obtained by the ray tracing method, an area where there is no light beam reaching from an object such as a building BL is defined as an empty area BS. Further, the building information display DI preferentially sets the outer frame side of the windshield WS as the display position among the positions near the building BL. For example, by specifying the range of the windshield WS in the simulated scene image SVS based on the line-of-sight direction of the driver DR, the outer edge side in the range can be determined as the display position. Further, assuming that the line-of-sight direction of the driver DR is near the center of the windshield WS, a position farther from the center (line-of-sight direction) can be determined as the display position. By displaying the building information display DI in this way, it is possible to avoid a situation where the driver DR is blocked and the driving is hindered. The building information display DI is not limited to these display forms, and various display forms as shown in FIGS. 9 to 12 are possible. Each will be described below.

  As shown in FIG. 9, the building information display DI can be transparently displayed (transparent building information display CDI). This can be realized not only by increasing the transparency of the building information display DI displayed on the windshield WS but also by decreasing the brightness. For example, in a situation such as being surrounded by a tall building, the empty area BS of the windshield WS is reduced and it is necessary to display in other areas. In such a case, by using the transparent building information display CDI , Can avoid situations that hinder driving.

  A plurality of building information displays DI can be displayed as shown in FIG. At this time, since the building BL may overlap when viewed from the driver, only the building information display DI related to the building BL where the driver DR can be seen is displayed by preferentially displaying the building information display DI related to the near building. Can be recognized by the driver DR. Whether or not the building BL overlaps when viewed from the driver can be determined by the positional relationship and height relationship between the buildings based on the vehicle C in the three-dimensional data 37.

  The building information display DI can change the level of detail according to the distance from the current position of the vehicle C to the building BL. For example, as shown in FIG. 8, a building information display DI including a building name is initially displayed, and when the vehicle C approaches a predetermined distance, further detailed information (building BL) of the building BL is obtained from the building information database 33d. The name of each individual facility and the number of floors thereof are read out, and the detailed building information display DDI as shown in FIG. Thereby, driver DR can acquire detailed building information in steps.

  In addition to the building information display DI, as shown in FIG. 12, an outline emphasis display OE that emphasizes the outline can be displayed in the area of the windshield WS that becomes the building BL when viewed from the driver DR. When the simulated scene image SVS is obtained from the three-dimensional map data 37, the region of the building BL is distinguished from other regions, so that the contour emphasis display OE is displayed in the region along the boundary (that is, the contour of the building BL). This makes it easier for the driver DR to recognize the building BL.

  On the windshield WS, the simulated scene image SVS (see FIG. 7) or the actual scene image AVS (see FIG. 7) can be displayed so as to overlap the scene viewed from the driver. It is preferable to adjust the transparency and brightness of the superimposed image so that it does not interfere with the driving of the driver DR. FIG. 13 shows a case where the simulated scene image SVS is displayed in an overlapping manner. This makes it easy to recognize the building BL even when traveling at night, for example. Note that whether or not to display the simulated scene image SVS or the actual scene image AVS can be selected by operating the operation switch group 41 or the like.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these, In the range which does not deviate from the summary, it can change suitably and can implement.

The figure which represents roughly the information display apparatus for vehicles of this invention of the state attached to the vehicle Electrical block diagram of vehicle information display device of the present invention The functional block diagram showing the process which the information display apparatus for vehicles of this invention performs The flowchart showing the process which the information display apparatus for vehicles of this invention performs. Illustration of 3D map data Illustration of simulated scene image Explanatory drawing about collation of simulated scene image and actual scene image The figure which shows the example of the 1st display to a windshield The figure which shows the 2nd example of a display to a windshield The figure which shows the 3rd example of a display to a windshield The figure which shows the 4th example of a display to a windshield The figure which shows the 5th example of a display to a windshield The figure which shows the 6th example of a display to a windshield Illustration of windshield display device

Explanation of symbols

1 Vehicle navigation device (vehicle information display device)
2 Position detector (position detection means, direction detection means)
3 Hard disks (map data storage means, building information storage means)
32d map database 33d building information database 37 3D map data 41 operation switch group (selection means, setting means)
43 Remote control terminal (selection means, setting means)
61 Outside-vehicle camera (outside-vehicle imaging means)
62 Line-of-sight camera (driver imaging means)
8 Windshield display device (windshield display means)
10 control unit (display control unit, gaze direction detection unit, simulated scene image calculation unit, building information acquisition unit, actual scene image identification unit, scene image verification unit)

Claims (18)

Map data storage means for storing three-dimensional map data;
Building information storage means for storing building information relating to a building included in the three-dimensional map data;
Position detecting means for detecting the current position of the vehicle;
Direction detection means for detecting the traveling direction of the vehicle;
A simulated scene image calculation unit that calculates a simulated scene image assumed to be viewed by the driver from the three-dimensional map data based on the current position and traveling direction of the vehicle, and identifies a building included in the simulated scene image When,
A building information acquisition unit that acquires building information about the building included in the simulated scene image from the building information storage unit;
Windshield display means for displaying images on the windshield of the vehicle;
A display control unit for controlling the windshield display means so as to display the building information related to the building included in the simulated scene image in the area of the windshield that is in the vicinity of the building when viewed from the driver;
A vehicle information display device comprising: Driver imaging means for photographing the eyes of the driver, and a gaze direction detection unit for detecting the gaze direction of the driver from the image obtained by the driver imaging means,
The simulated scene image calculation unit calculates a simulated scene image assumed to be viewed by the driver from the three-dimensional map data based on the current position and traveling direction of the vehicle, and the driver's line-of-sight direction, and the simulation The vehicle information display device according to claim 1, wherein a building included in the scene image is specified. Vehicle exterior imaging means for photographing outside the vehicle;
A real scene image specifying unit for specifying a driver's gaze direction obtained by the gaze direction detection unit and an actual scene image viewed by the driver from an image obtained by the outside imaging unit;
A scene image matching unit that matches the simulated scene image with the actual scene image and corrects the position of the simulated scene image;
The vehicle display apparatus according to claim 1, wherein the display control unit performs display control based on the simulated scene image whose position is corrected by the scene image matching unit.   4. The vehicle information display device according to claim 3, wherein the display control unit displays the actual scene image obtained by the actual scene image specifying unit on the windshield so as to overlap with a scene viewed from a driver.   The said display control part displays the said simulated scene image obtained by the said simulated scene image calculation part on the said windshield so that it may overlap with the scene seen from the driver | operator. Vehicle information display device.   The vehicle information display device according to claim 4, further comprising selection means for selecting whether to display the actual scene image or the simulated scene image.   The simulated scene image calculation unit specifies a distance from a current position of the vehicle to a building included in the simulated scene image, and the display control unit does not display the building information when the distance is equal to or less than a predetermined value. The vehicle information display device according to any one of claims 1 to 6.   The simulated scene image calculation unit specifies a distance from a current position of the vehicle to a building included in the simulated scene image, and the display control unit does not display the building information when the distance is a predetermined value or more. The vehicle information display device according to any one of claims 1 to 7.   The simulated scene image calculation unit specifies a distance from a current position of the vehicle to a building included in the simulated scene image, and the display control unit displays the building information only when the distance is within a predetermined range. The vehicle information display device according to any one of claims 1 to 6.   The vehicle information display device according to claim 7, further comprising setting means for setting the predetermined range or the predetermined value.   11. The vehicle information display device according to claim 1, wherein the display control unit displays the building information in an area of the windshield that is empty when viewed from a driver.   The vehicle information display device according to claim 1, wherein the display control unit displays the building information in a transparent manner.   13. The vehicle information display device according to claim 1, wherein the display control unit preferentially uses the windshield outer frame side as a display position of the building information.   The simulated scene image calculation unit specifies a distance from a current position of a vehicle to a building included in the simulated scene image, and the display control unit changes the level of detail of the building information according to the distance. 14. The vehicle information display device according to any one of 1 to 13.   15. The vehicle information display according to any one of claims 1 to 14, wherein the display control unit displays information related to an individual facility in a building and its floor included in the simulated scene image in the building information. apparatus.   The display control unit according to any one of claims 1 to 15, wherein when the buildings included in the simulated scene image overlap each other when viewed from the driver, the display information related to the building on the near side is preferentially displayed. The vehicle information display device described.   17. The display control unit according to claim 1, wherein, together with the display of the building information, an outline emphasis display for emphasizing the outline is displayed in an area of the windshield that becomes the building when viewed from the driver. The vehicle information display device described. The vehicle information display device according to any one of claims 1 to 17, further comprising selection means for selecting whether or not to display the building information.