JP2019184866A - Map display device, control method therefor, program, and storage medium - Google Patents

Abstract

To provide a map display device capable of appropriately displaying both a neighborhood of a current location and an area away from the current location.SOLUTION: A map display device 1 is provided, comprising a controller 14 for displaying a map on a display unit 16, the controller 14 being configured to display a map on the display unit 16 in such a way that a look-down angle for a first point on the map is smaller than a look-down angle for a second point further from a mobile body than the first point.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a map display technique.

  Conventionally, a technique for displaying a map in a three-dimensional display or a bird's-eye view is known. For example, Patent Document 1 discloses a map drawing that can adjust a drawing load of a map displayed by a three-dimensional display or a bird's-eye view by generating a simplified drawing object according to the display position on the display screen from the drawing object data. An apparatus is disclosed.

JP 2014-219748 A

  When a map is displayed by a bird's-eye view, there is a problem that a map around the route is easy to see near the current position, but it is difficult to see the map farther away. On the other hand, when the map is displayed with a plan view, the display range is limited by the scale, so it is necessary to reduce the scale to display including the points far from the current position, and around the current position displayed on the map There is a problem that the amount of information becomes small. Such a problem becomes conspicuous when displaying a route to a destination or the like.

  The present invention has been made to solve the above-described problems, and has as its main object to provide a map display device that can suitably display both the vicinity of the current position and the area away from the current position. To do.

  The invention described in claim is a map display device, comprising a display control unit for displaying a map on a display unit, wherein the display control unit has an angle at which the first point on the map is looked down at the first point. The map is displayed on the display unit so that the angle is smaller than the angle over which the second point farther from the moving body is looked down.

  The invention described in the claims is a control method executed by the map display device, and includes a display control step of displaying a map on a display unit, and the display control step includes a first point on the map. The map is displayed on the display unit such that an angle to look down is smaller than an angle to look down at a second point farther from the moving body than the first point.

  The invention described in the claims is a program executed by a computer, causing the computer to function as a display control unit that displays a map on a display unit, and the display control unit selects a first point on the map. The map is displayed on the display unit such that an angle to look down is smaller than an angle to look down at a second point farther from the moving body than the first point.

It is a schematic structure of the map display apparatus which concerns on an Example. The schematic map display which concerns on a 1st display mode is shown. FIG. 3 is a display example in which roads and facilities are added to the map display shown in FIG. 2. It is the figure which showed schematically the change of the viewpoint which displays the map in each of a lower area | region, an intermediate | middle area | region, and an upper area | region. The schematic map display which concerns on a 2nd display mode is shown. The schematic map display which concerns on a 3rd display mode is shown. The schematic map display which concerns on a 4th display mode is shown. The schematic map display which concerns on a 5th display mode is shown. The schematic map display which concerns on a 6th display mode is shown. The schematic map display which concerns on a 7th display mode is shown. It is a display example of a map when the amount of information to be displayed is different between a lower area and another area.

  According to a preferred embodiment of the present invention, the map display device includes a display control unit that displays a map on a display unit, and the display control unit has an angle at which the first point on the map looks down, The said map is displayed on the said display part so that it may become an angle smaller than the angle which looks down on the 2nd point far from a mobile body from a 1st point. According to this aspect, the angle at which the first point on the map is looked down is smaller than the angle at which the second point far from the moving object is smaller than the first point. It is possible to display a map that has been eliminated.

  In one aspect of the map display device, the display control unit is configured such that an angle overlooking each point between the first point and the second point increases as the distance from the first point toward the second point increases. To change continuously. According to this aspect, the map display device can display a smooth map having a viewpoint position closer to the plan view at a point farther from the moving body.

  In another aspect of the map display device, the display control unit displays a first region including a region where the angle is continuously changed and a second region where the angle is constant, One region includes the first point, and the second region includes the second point. By this aspect, the map display apparatus can display the 2nd area | region which displays distant by a top view etc. suitably.

  In another aspect of the map display device, the display control unit includes a first region including a region in which the angle is continuously changed, and a second region that decreases as the angle moves away from the first point. The first area includes the first point, and the second area includes the second point. By this aspect, the map display apparatus can display the 2nd area | region which displays distant by a bird's-eye view etc. suitably.

  In another aspect of the map display device, the display control unit displays the map connecting the first region and the second region on the display unit. By this aspect, the map display apparatus can display a map suitably so that an observer may not feel uncomfortable.

  In another aspect of the map display device, the display control unit provides a third region in the first region that decreases as the distance from the current position of the moving body increases, and the third region Including the current position of the moving body, the angle with respect to the third region is smaller than the angle with respect to the second region. According to this aspect, it is possible to improve visibility by displaying the vicinity of the current position of the moving body from a diagonal viewpoint with a bird's-eye view and the like, while displaying a distant place away from the moving body in a more planar manner.

  In another aspect of the map display device, the display control unit is configured such that the scale and area of the area other than the third area are displayed so as to display the entire route to the destination, the stop-off place, or the guide point of the moving body. Change the proportion or curvature. According to this aspect, the map display device can clearly indicate the route to be traveled on the map.

  In another aspect of the map display device, the display control unit displays information on an object detected by a detection unit provided in the moving body in the third region. According to this aspect, the map display device can clearly indicate the presence of an object around the current position on the map.

  In another aspect of the map display device, the display control unit displays the map on the display unit so that a destination, a stopover, or a guidance point around the mobile object is displayed on the second region. indicate. According to this aspect, the map display device can always display the target point on the second region and assist the driving appropriately.

  In another preferred embodiment according to the present invention, the control method is executed by the map display device, and includes a display control step of displaying a map on a display unit, and the display control step is a first method on the map. The map is displayed on the display unit such that the angle looking down at the point is smaller than the angle looking down at the second point farther from the moving body than the first point. By executing this control method, the map display device can perform map display in which the problem of the bird's eye view, which is difficult to see as it goes farther, is preferably solved.

  In another preferred embodiment of the present invention, the program is executed by a computer, the computer is caused to function as a display control unit that displays a map on a display unit, and the display control unit The map is displayed on the display unit such that the angle looking down at the point is smaller than the angle looking down at the second point farther from the moving body than the first point. By executing this program, the computer can perform a map display in which the problem of the bird's eye view, which is difficult to see as it goes farther, is preferably solved. Preferably, the program is stored in a storage medium.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following, the “map” includes data used for ADAS (Advanced Driver Assistance System) and automatic driving in addition to data referred to by a conventional in-vehicle device for route guidance.

[Configuration of map display device]
FIG. 1 shows a schematic configuration diagram of a map display device 1 in the present embodiment. The map display device 1 is a stationary or portable display device used in a vehicle, and is mainly provided in a communication unit 11, a storage unit 12, an input unit 13, a control unit 14, and a vehicle. An interface 15 electrically connected to the sensor unit 7, a display unit 16, and a sound output unit 17. Each element in the map display device 1 is connected to each other via a bus line 19.

  The communication unit 11 performs data communication based on the control of the control unit 14. For example, the communication unit 11 transmits information related to an object detected based on the output of the sensor unit 7 to a server device that collects and distributes data, map data corresponding to an area around the current position, and the like. Or received from the server device described above. In addition, the communication unit 11 performs a process of transmitting a control signal for controlling the vehicle to the vehicle, a process of receiving a signal related to the state of the vehicle from the vehicle, a process of transmitting / receiving data to / from another vehicle by inter-vehicle communication, and the like. May be.

  The storage unit 12 stores a program executed by the control unit 14 and information necessary for the control unit 14 to execute a predetermined process. In the present embodiment, the storage unit 12 stores the map DB 4 and the sensor data cache 6. The map DB 4 is a database including road data, facility data, and feature information, for example. The road data includes lane network data for route search, road shape data, traffic regulation data, and the like. The feature information includes information such as signs such as road signs, road markings such as stop lines, road demarcation lines such as center lines, and structures along the road. In addition, the feature information may include highly accurate point cloud information of the feature for use in the vehicle position estimation. The map DB 4 may be appropriately updated based on update data received from a server device (not shown) by the communication unit 11. The sensor data cache 6 is a cache memory that temporarily holds output data (so-called raw data) of the sensor unit 7.

  The input unit 13 is a button, a touch panel, a remote controller, a voice input device, or the like for a user to operate. For example, an input for specifying a route search condition such as a destination, an input for specifying on / off of automatic driving And the generated input signal is supplied to the control unit 14.

  The interface 15 performs an interface operation for supplying the output data of the sensor unit 7 to the control unit 14 and the sensor data cache. The sensor unit 7 includes a plurality of external sensors for recognizing the surrounding environment of the vehicle such as a lidar 71 and a camera 72, and internal sensors such as a GPS receiver 73, a gyro sensor 74, an acceleration sensor 75, and a speed sensor 76. . The lidar 71 discretely measures the distance to an object existing in the outside world, recognizes the surface of the object as a three-dimensional point group, and generates point group data. The camera 72 generates image data taken from the vehicle. The sensor unit 7 may include any external sensor and internal sensor other than the external sensor and the internal sensor shown in FIG. For example, the sensor unit 7 may include an ultrasonic sensor, an infrared sensor, a microphone, and the like as an external sensor. External sensors such as the lidar 71 and the camera 72 are examples of the “detection unit” in the present invention.

  The display unit 16 displays a map showing a route to the destination and information for assisting driving based on the control of the control unit 14. The sound output unit 17 outputs a guidance voice that supports driving based on the control of the control unit 14.

  The control unit 14 includes a CPU that executes a predetermined program, and controls the entire map display device 1. For example, the control unit 14 displays a map indicating the route to the destination input by the input unit 13 on the display unit 16. In this case, as will be described later, the control unit 14 displays the periphery of the current position while displaying the periphery of the current position by using a projection method (also referred to as “curved surface map”) in which the map is bent inward and displayed in a curved surface shape. And a map showing the distant area such as near the next guide point. The control unit 14 functions as a display control unit and a computer that executes a program.

[Map display]
Next, a display example of a map displayed on the display unit 16 by the control unit 14 in the present embodiment will be described. The control unit 14 displays at least a part of the area as a curved surface diagram, thereby suitably displaying both the area around the current position and the far area on the map. Below, this display example is classified and demonstrated to a 1st display mode-a 7th display mode, respectively. Note that the control unit 14 may determine which of the display modes described below is to be used to display the map based on a user input by the input unit 13, and is executed for each display mode. Conditions may be determined in advance, and a display mode that satisfies the conditions may be automatically executed.

(First display mode)
In the first display mode, the control unit 14 displays a map so that the current position and the destination are displayed on the screen.

  FIG. 2 shows a schematic map display according to the first display mode displayed by the display unit 16. In FIG. 2, the control unit 14 displays a current position mark 30 indicating the current position, a destination mark 31 indicating the destination, and a route line Rt indicating the route from the current position to the destination on the map. Yes. The broken lines are virtual lines that are not actually displayed, and are lines (for example, latitude lines and meridians) that indicate equal positions at equal intervals on each coordinate axis when the ground is regarded as two-dimensional coordinates. FIG. 3 is a specific display example in which roads and facilities are added to the display of FIG.

  Here, the control unit 14 includes an area located on the lower side of the screen (also referred to as “lower area”), an area located on the upper side of the screen (also referred to as “upper area”), and a space between them. The display method of the map differs depending on the area (also referred to as “intermediate area”). Specifically, the control unit 14 displays a lower area that displays the periphery of the current position as a bird's eye view, displays an intermediate area as a curved surface view, and displays an upper area that displays the periphery of the destination as a plan view or a plan view. It is displayed with a figure that is a close viewpoint. In this way, the viewpoint for displaying the map is different in each of the lower region, the intermediate region, and the upper region. The map viewpoint in each area will be described later with reference to FIG.

  Since the scale of the lower area displaying the vicinity of the current position is substantially the largest, and the map of the upper area is also displayed with a plan view or a view close to the plan view, Can be seen. On the other hand, in the intermediate area displayed by the curved surface diagram, the scale is substantially the smallest, and the map is simply displayed. As described above, in the display examples of FIGS. 2 and 3, the map display is suitable for visually recognizing the area near the current position displayed in the lower area and the area far from the current position displayed in the upper area. In addition, since the respective regions are smoothly connected at the boundary between the lower region and the intermediate region, and the boundary between the intermediate region and the upper region, and no seam is generated, an unnatural appearance does not occur. The lower region and the middle region are examples of the “first region” in the present invention, the upper region is an example of the “second region” in the present invention, and the lower region is the “third region” in the present invention. Is an example.

  In the first display mode, the control unit 14 fixes the position of the current position mark 30 indicating the current position and displays the destination mark 31 indicating the destination on the map. At this time, the control unit 14 preferably arranges the current position and the destination vertically (vertically) so as to be located at the center in the horizontal direction of the screen, and keeps displaying the positional relationship as much as possible. In this way, fixing the position of the current position mark 30 saves the driver from having to search for the vehicle position. Similarly, by arranging the current position and the destination vertically so as to be located at the center in the horizontal direction of the screen, the driver can easily grasp the position of the destination on the screen. Preferably, the control unit 14 displays the map so that the direction of the current position mark 30 is within a predetermined angle (for example, 45 °) difference from the screen upward direction. By doing so, the display is maintained so that the current position mark 30 faces forward to some extent, so that it is possible to perform a map display in which the driver does not feel uncomfortable. At this time, for example, the control unit 14 sets the position of the current position mark 30 as the first priority (the highest priority), and sets the direction of the current position mark 30 within a predetermined angle difference from the screen upward direction. The second priority is displayed, and the destination mark 31 is displayed on the map, and the current position and the destination are arranged vertically on the screen, and the map is displayed as the third priority.

  More preferably, in the first display mode, the control unit 14 displays a map on the display unit 16 so as to display the entire route line Rt indicating the route from the current position to the destination. In the example of FIGS. 2 and 3, the control unit 14 displays a map so that the destination exists in the upper area and the entire route line Rt is displayed on the screen. For example, the control unit 14 displays a map as the fourth priority following the first to third priorities described above to display the entire route from the current position to the destination.

  And the control part 14 updates the display of a map according to the movement of the present position specified based on the output of the sensor part 7. FIG. In the first example relating to the map display update, the control unit 14 scrolls the entire map from the top to the bottom of the screen while the current position mark 30 is displayed on the lower area as the vehicle approaches the destination. Let In this case, as the vehicle approaches the destination, the destination mark 31 gradually moves downward from the center position of the upper area and approaches the current position mark 30 displayed in the lower area.

  In the second example relating to the map display update, the control unit 14 fixes the current position mark 30 in the lower area and the destination mark 31 in the upper area while the entire route line Rt is within the screen. Display the map as it appears in In this case, for example, the control unit 14 changes the scale of the map in the area other than the lower area stepwise or continuously so that the scale of the map increases as the vehicle approaches the destination. In this case, the control unit 14 does not change the scale or the like of the lower region, thereby suppressing the uncomfortable feeling caused by the frequent change in the display near the current position. In another example, the control unit 14 changes the curvature of the curved surface diagram in the intermediate region stepwise or continuously as the vehicle approaches the destination. In yet another example, the control unit 14 changes the area ratio of the intermediate region stepwise or continuously as the vehicle approaches the destination. For example, the control unit 14 decreases the area of the intermediate region (that is, the width in the vertical direction of the screen) as the current position approaches the destination. When the distance to the destination is within the predetermined distance, the control unit 14 keeps the current position mark 30 displayed on the lower area as the vehicle approaches the destination, as in the first example. , Scroll the entire map from top to bottom.

  As described above, in the first display mode, the control unit 14 allows the observer of the display unit 16 to visually recognize the entire route from the current position to the destination while displaying the periphery of the current position on a large scale. it can.

  FIG. 4 is a diagram schematically showing changes in the viewpoint “Pe” for displaying the map in each of the lower region, the intermediate region, and the upper region. In FIG. 4, the display target area “Dtag”, which is an area to be displayed on the screen of the display unit 16, and the look-down angle from the viewpoint Pe with respect to the points “P1” to “P7” in the display target area Dtag. “Θ1” to “θ7” are shown. The “looking-down angle” means an angle formed by the line connecting the viewpoint Pe and the point looking down from the viewpoint with respect to the horizontal line, and looking down at each point represented by the plan view (the viewpoint Pe is directly above). The angle is 90 °, and the look-down angle with respect to each point represented by the bird's-eye view (the viewpoint Pe is obliquely upward) is an angle of less than 90 °.

  As shown in FIG. 4, in the lower area represented by the bird's-eye view, the closer to the intermediate area, the larger the looking-down angle. For example, the look-down angle θ2 at the point P2 that is the boundary point between the lower region and the intermediate region is larger than the look-down angle θ1 at the point P1 close to the current position. Further, the look-down angle θ7 at the point P7 in the upper region is larger than the look-down angles θ1 to θ6 at the points in the lower region and the intermediate region. When the upper area is represented by a plan view, the look-down angle at each point in the upper area is 90 °.

  On the other hand, in the intermediate region represented by the curved surface diagram, if the point close to the lower region of any two points is the first point and the point close to the upper region is the second point, the first point to the second point The angle looking down at each point increases as it goes from the first point to the second point. For example, when the first point is the point P4 and the second point is the point P5, the look-down angle of each point from the point P4 to the point P5 is from the angle θ4 to the angle θ5 as it goes from the first point to the second point. Gradually grows.

  Also, the look-down angle continuously changes in the vicinity of the boundary between the lower region and the intermediate region and in the vicinity of the boundary between the intermediate region and the upper region. Thereby, each area | region is connected smoothly and a seam does not generate | occur | produce. Thereby, the area | region of the present position periphery and a distant area | region can be suitably displayed on a map, without producing discomfort to an observer.

  In addition, when the stop place is set, the control part 14 may display a map so that a stop place may be displayed on a screen instead of displaying a destination on a screen.

(Second display mode)
In the second display mode, the control unit 14 always displays on the screen the entire route up to the point where the next guidance is required (also referred to as “next guidance point”) on the route to the destination. Show map. Thereby, the control part 14 makes an observer visually recognize the path | route to the next guidance point which is a point which needs guidance next suitably.

  FIG. 5A shows a schematic map display according to the second display mode displayed by the display unit 16. In FIG. 5A, the control unit 14 displays a current position mark 30 indicating the current position, a guide point mark 32 indicating the next guide point, and a route line Rt on the map.

  In FIG. 5 (A), the control unit 14 is a plan view of the lower region representing the periphery of the current position and the upper region representing the periphery of the next guidance point, as in the display example of the first display mode shown in FIG. A bird's-eye view and an intermediate area are displayed as a curved surface view. And the control part 14 displays each area | region smoothly connected by increasing a look-down angle continuously with the change of the position from the bottom of a screen similarly to a 1st display mode.

  In the second display mode, the control unit 14 displays on the display unit 16 a map on which the route line Rt is superimposed so as to display the entire route from the current position to the next guidance point among the routes to the destination. To do. And the control part 14 updates the display of a map according to the movement of the present position specified based on the output of the sensor part 7. FIG.

  FIG. 5B shows a schematic map display when the vehicle has traveled a predetermined distance from the state of FIG. In this case, as the vehicle approaches the next guidance point, the control unit 14 scrolls the entire map from the top to the bottom of the screen to gradually bring the next guidance point on the map closer to the current position. In this case, as the vehicle approaches the next guidance point, the guidance point mark 32 gradually moves downward from the center position of the upper area, and is displayed in the intermediate area in FIG. 5B. And when the control part 14 passes the next guidance point, the guidance point which passes the said next guidance point is defined as a next guidance point, and a new next guidance point is set like the example of a display of FIG. 5 (A). A map on which the route line Rt is superimposed is displayed on the display unit 16 so as to be displayed at the center of the upper area and to display the entire route to the new next guidance point.

  When the distance to the next guidance point is equal to or greater than the predetermined distance, the control unit 14 fixes the current position mark 30 to the lower area and keeps the guidance point mark 32 to the upper area to the next guidance point. The map may be displayed so that the entire route is displayed on the screen. In this case, for example, as described in the first display form, the control unit 14 adjusts the scale of the map other than the lower region, the area ratio of the intermediate region, and the curvature of the intermediate region as the current position approaches the next guide point. Change at least one of them. When the distance to the next guidance point is less than the predetermined distance, the control unit 14 displays the entire map as the current position approaches the next guidance point, as in the display example of FIG. By scrolling from top to bottom, the next guide point on the map is gradually brought closer to the current position.

  Thus, according to the 2nd display mode, control part 14 can make an observer visually recognize the direction to the next guidance point and the course to the next guidance point suitably. As in the first display mode, the control unit 14 sets the position of the current position mark 30 as the first priority, and sets the direction of the current position mark 30 within a predetermined angle difference from the screen upward direction. This is the second priority, the next guide point is displayed on the map, and the current position and the next guide point are arranged vertically on the screen, and the third priority is the route to the next guide point. You may display a map by making the whole display into the 4th priority.

(Third display mode)
In the third display mode, the control unit 14 displays a map so that a POI (Point of Interest) that satisfies a predetermined condition is always displayed on the screen. Thereby, the control part 14 specifies clearly the positional relationship of the point which an observer is interested (namely, there is a possibility of stopping) and the present position. Here, the POI satisfying the above-mentioned predetermined conditions (also referred to as “always-display POI”) is, for example, a facility existing within a predetermined distance from a route or a favorite facility among facilities corresponding to a genre designated by the user. Recommendations determined by the control unit 14 based on facilities that are within a predetermined distance from the route among designated facilities, vehicle status (for example, fuel status and charging status), vehicle travel history (for example, past stopovers), etc. This facility is applicable.

  FIG. 6 shows a schematic map display according to the third display mode displayed by the display unit 16. In FIG. 6, the control unit 14 always considers two facilities existing within a predetermined distance from the route among the facilities corresponding to the genre “restaurant” designated by the user as the display POI. And the control part 14 sets a display object area so that the position of these facilities may be included, and displays the mark 33 and the mark 34 which respectively point to the position of always-display POI on a map. In this case, the control unit 14 may hide the display POI at all times in each of the north-up setting up the north direction and the heading-up setting up the traveling direction of the vehicle. Regardless of whether the display target area is determined. For example, the control unit 14 sets the map scale and the like so that the average latitude and average longitude of the always-display POI are aligned with the center of the screen and all the always-display POIs are within the display mode area.

  Note that the control unit 14 may sequentially exclude POIs that are less likely to stop due to the passing of vehicles from among the POIs that are always displayed POIs from the constantly displayed POIs. For example, when the vehicle passes a point on the route closest to the POI determined as the always-display POI, the control unit 14 may exclude the POI from the always-display POI.

  Further, in FIG. 6, the control unit 14 shows a bird's-eye view and a next guidance for the lower area representing the periphery of the current position, similarly to the display example of the first display mode shown in FIG. An upper area representing the periphery of the point is displayed as a plan view or a bird's eye view, and an intermediate area is displayed as a curved surface view. Then, similarly to the first display mode, each area is smoothly connected and displayed by continuously increasing the look-down angle as the position changes from the bottom to the top of the screen. As a result, it is possible to suitably display a point away from the current position on the screen while displaying a large area around the current position.

  Note that the third display mode may be combined with the first display mode. In this case, the control unit 14 displays the map so that the destination and the constant display POI are always displayed on the screen.

(Fourth display mode)
In the fourth display mode, the control unit 14 always displays the next passing lamp on the screen when a path that passes through a point provided with a ramp (slope) such as a junction or an interchange is set. To display the map.

  FIG. 7 shows a schematic map display according to the fourth display mode displayed by the display unit 16. In FIG. 7, the control unit 14 recognizes that the lamp 39 exists on the set route, and displays a map on which the route line Rt is superimposed on the display unit 16 so that the lamp 39 and the route to the lamp 39 are displayed. To display. Here, the road 38 on which the vehicle is traveling and the road 40 where the road 38 is connected by a ramp 39 are displayed on the map in a state where they are superimposed on the route line Rt. In FIG. 7, the control unit 14 is a bird's-eye view of the lower area representing the periphery of the current position, the upper area representing the area including the lamp 39 is a plan view or a view close to the plan view, and the intermediate area is a curved surface view. it's shown. As a result, the surroundings of the lamp 39 are suitably displayed on the screen while the surroundings of the current position are displayed large. And the control part 14 updates the display of a map according to the movement of the present position of the vehicle specified based on the output of the sensor part 7. FIG.

  In this case, like the destination in the first display mode, the control unit 14 first displays the lamp 39 in the upper area, and then the entire map is directed from the top to the bottom of the screen as the vehicle approaches the lamp 39. By scrolling, the lamp 39 on the map is gradually brought closer to the current position mark 30 displayed in the lower area. When the vehicle passes through the lamp 39 and there is a lamp that passes next to the lamp 39, the control unit 14 performs a similar map display with the next lamp as a reference. On the other hand, the control part 14 switches to the map display by another display mode, when the lamp | ramp which passes next to the lamp | ramp 39 does not exist. When the distance to the lamp 39 is a predetermined distance or more, the control unit 14 fixes the lamp 39 and the current position mark 30 while fixing the current position mark 30 to the lower area and fixing the lamp 39 to the upper area. The map may be displayed so that the entire route to the lamp 39 is displayed on the screen.

(Fifth display mode)
In the fifth display mode, when the predetermined parking position in the parking lot is set as the destination, the control unit 14 displays the map so that the route to the target parking position and the entire parking lot are always displayed on the screen. Is displayed.

  FIG. 8 shows a schematic map display according to the fifth display mode displayed by the display unit 16. In the example of FIG. 8, the control unit 14 recognizes that a predetermined parking position in the parking lot 41 is set as a destination, and displays the entire route to the set parking position and the entire parking lot 41. A map on which the route line Rt is overlapped is displayed on the display unit 16. Further, in FIG. 8, the control unit 14 is a bird's-eye view of the lower area representing the periphery of the current position, the upper area representing the area including the parking lot 41 is a plan view or a view close to the plan view, and the intermediate area is a curved view Is displayed. Thereby, while displaying the periphery of the current position in a large size, a detailed route to the parking position in the vicinity of the parking lot 41 far from the current position is also preferably displayed on the screen.

  In addition, you may perform the control part 14 when the display by a 5th display mode approaches the parking lot 41 which is a destination within a predetermined distance. In this case, when approaching the parking lot 41 within a predetermined distance, the control unit 14 displays a map so that the entire parking lot 41 is displayed at the central portion of the upper area as shown in FIG. And the control part 14 updates the display of a map according to the movement of the present position of the vehicle specified based on the output of the sensor part 7. FIG. For example, like the destination in the first display mode, the control unit 14 first displays the parking lot 41 in the upper area, and then directs the entire map from the top to the bottom of the screen as the vehicle approaches the parking lot 41. By scrolling, the parking lot 41 on the map is gradually brought closer to the current position mark 30 displayed in the lower area.

  According to the fifth display mode, it is possible to allow the driver to know in advance the route in the vicinity of the parking lot.

(Sixth display mode)
In the sixth display mode, the control unit 14 applies the appropriate map projection to each of the left area, the middle area, and the right area obtained by dividing the screen into three in the horizontal direction, so that the entire route to the destination or the next guidance point is applied. Display the map so that is always displayed on the screen.

  FIG. 9 shows a schematic map display according to the sixth display mode displayed by the display unit 16. In the example of FIG. 9, when the entire route to the destination is displayed on the map by heading up, the control unit 14 sets the left region, the middle region, and the right region in the horizontal direction of the screen, and sets the left region. The map is displayed by a bird's eye view, a curved surface view of the middle region, a plan view of the right region, or a view close to this. And the control part 14 enlarges a look-down angle with the change of the position from the left of a screen to the right in a 6th display mode.

  According to this example, even if the control unit 14 displays a long route in the horizontal direction of the screen, the control unit 14 does not display the route line Rt that is extremely long in the horizontal direction on the small-scale map. Visibility can be improved by displaying a route line Rt with a suitable ratio of lengths in the horizontal direction on the map. In this case, for example, when the distance to the destination in the left-right direction of the vehicle is greater than or equal to a predetermined multiple of the distance to the destination in the traveling direction of the vehicle, the control unit 14 performs display in the sixth display mode.

  Note that the control unit 14 is not limited to displaying the entire route to the destination on the map, but also when displaying a map showing the entire route to the next guidance point or stoppage on the screen. The map may be displayed by the sixth display mode. The left region and the middle region are examples of the “first region” in the present invention, the right region is an example of the “second region” in the present invention, and the left region is the “third region” in the present invention. It is an example.

(Seventh display mode)
In the seventh display mode, the control unit 14 displays a map provided with a plurality of sets of the intermediate area and the upper area.

  FIG. 10 shows a schematic map display according to the seventh display mode displayed by the display unit 16. In the example of FIG. 10, the control unit 14 includes a lower region, a first intermediate region, a first upper region, a second intermediate region, and a second upper region in order from the bottom of the screen. Then, the control unit 14 displays a guide point mark 32 indicating the next guide point in the first upper area near the center of the screen, and displays a destination mark 31 indicating the destination in the first upper area near the upper side of the screen. A route line Rt indicating the entire route to the destination is displayed on the map.

  And the control part 14 updates the display of a map according to the movement of the present position specified based on the output of the sensor part 7. FIG. For example, the control unit 14 scrolls the entire map from the top to the bottom of the screen as the vehicle progresses, so that the destination mark 31 and the guide point mark 32 on the map gradually move to the current position mark in the lower area. Approach 30.

  In another example, the control unit 14 adjusts a scale, an area ratio, a curvature, or the like in a region other than the lower region until it approaches a point indicated by the guide point mark 32 within a predetermined distance, thereby the destination mark 31. May be fixed in the second upper region, and the point indicated by the guide point mark 32 may be fixed in the first upper region. When the vehicle approaches the point indicated by the guide point mark 32 within a predetermined distance, the control unit 14 scrolls the map from the top to the bottom of the screen as the vehicle progresses, so that the guide point mark 32 is displayed. Gradually approach the current position mark 30. And the control part 14 displays the point of a new next guidance point in the 1st upper side area | region of the center vicinity after passage of the point which the guidance point mark 32 shows.

  Instead of the display example of FIG. 10, the control unit 14 may display a stopover in the first upper area instead of the next guidance point. Similarly, the control unit 14 may display a stoppage in the second upper area instead of the destination.

  Next, supplementary explanation will be given for the displays common to the first to seventh display modes. The control unit 14 performs a detailed display with a large amount of information in the lower region (the left region in the sixth display mode) displaying a map around the current position, and performs a simple display with a small amount of information in other regions. May be.

  FIG. 11 is a display example of a map when the amount of information displayed in the lower area and other areas is different. In FIG. 11, as an example, the control unit 14 displays a route line Rt indicating a route to the destination on a map and displays a facility corresponding to a genre (here, a restaurant) designated by the user.

  As shown in FIG. 11, the control unit 14 displays a detailed map based on the map DB 4, the sensor data cache 6, and the like in the lower area displaying the vicinity of the current position. Specifically, the control unit 14 displays roads 41 and 42 in which lanes are clearly shown, and also displays a signal display 44, a sign 45, an obstacle (here, a pedestrian) 46, and the like. The control unit 14 may display the signal display 44, the sign 45, and the obstacle 46 based on the detection result of the sensor unit 7, and display by referring to the map DB 4 in which the detection result by another vehicle is reflected. May be. In addition, the control unit 14 displays a mark 43 indicating the location and name of the restaurant “◯ × restaurant” existing in the lower region, superimposed on the position of the restaurant.

  On the other hand, the control unit 14 displays a simple map in the intermediate area and the upper area. In FIG. 11, the control unit 14 displays simple roads that do not clearly indicate lanes, and marks 47 and 48 that indicate the locations of facilities corresponding to the genre designated by the user. And the control part 14 is abbreviate | omitting the display of the signal display, the sign, the obstacle, etc. which were displayed in the lower area in the middle area and the upper area.

  Thus, according to the display example of FIG. 11, the control unit 14 can suitably suppress the display of the entire screen from being complicated while preferably presenting information around the current position to the user.

  As described above, the map display device 1 according to this embodiment includes the control unit 14 that displays a map on the display unit 16. The control unit 14 displays the map on the display unit 16 so that the look-down angle of the first point on the map is smaller than the look-down angle of the second point farther from the moving body than the first point. Thereby, the map display apparatus 1 can suitably display the area around the current position and the distant area on the map.

[Modification]
Instead of providing all of the lower region, the intermediate region, and the upper region, the control unit 14 may not provide at least one of the lower region and the upper region. For example, the control unit 14 may provide only the lower area and the intermediate area, display the periphery of the current position in the lower area, and display other areas in the intermediate area. In another example, the control unit 14 may provide only the intermediate area and the upper area, display a distant area such as a destination in the upper area, and display other areas including the periphery of the current position in the intermediate area. . In yet another example, the control unit 14 may display the entire map as a curved surface diagram.

[Modification 2]
In the embodiment, the area is fixed and the entire map is scrolled. However, the area may be appropriately controlled depending on the distance to the destination, the stop-off place, and the guidance place. For example, the look-down angle may be increased so that a flat display is obtained as the destination is approached.

  As for the display viewpoint, the viewpoint from the side may be used as shown in FIG. 3, or the curved surface portion may be twisted and displayed.

1 Map display device 4 Map DB
6 sensor data cache 11 communication unit 12 storage unit 13 input unit 14 control unit 15 interface 16 display unit 17 sound output unit

Claims (12)

It has a display control unit that displays a map on the display unit,
The display control unit displays the map on the display unit such that an angle at which the first point on the map is looked down is smaller than an angle at which the second point far from the moving body than the first point is looked down. Map display device.   The said display control part changes continuously so that the angle which looks down at each point between the said 1st point and the said 2nd point may become large as it goes to the said 2nd point from the said 1st point. The map display device according to 1. The display control unit displays a first region including a region in which the angle is continuously changed and a second region in which the angle is constant,
The first region includes the first point,
The map display device according to claim 1, wherein the second region includes the second point. The display control unit displays a first region including a region in which the angle is continuously changed and a second region that decreases as the angle moves away from the first point,
The first region includes the first point,
The map display device according to claim 1, wherein the second region includes the second point.   The map display device according to claim 3 or 4, wherein the display control unit displays the map connecting the first region and the second region on the display unit. The display control unit provides a third region in the first region in which the angle decreases with increasing distance from the current position of the moving body,
The third area includes a current position of the moving body,
The map display device according to any one of claims 3 to 5, wherein the angle with respect to the third region is smaller than the angle with respect to the second region.   The display control unit changes a scale, an area ratio, or a curvature of an area other than the third area so as to display an entire route to a destination, a stopover, or a guide point of the moving body. Map display device.   The map display device according to claim 6 or 7, wherein the display control unit displays information on an object detected by a detection unit provided in the moving body in the third region.   The said display control part displays the said map on the said display part so that the periphery of the destination of the said mobile body, a stoppage, or a guidance point may be displayed on the said 2nd area | region. The map display device according to item. A control method executed by the map display device,
A display control step for displaying a map on the display unit;
In the display control step, the map is displayed on the display unit such that an angle at which the first point on the map is looked down is smaller than an angle at which the second point far from the moving body than the first point is looked down. Control method to do. A program executed by a computer,
Causing the computer to function as a display control unit for displaying a map on a display unit;
The display control unit displays the map on the display unit such that an angle at which the first point on the map is looked down is smaller than an angle at which the second point far from the moving body than the first point is looked down. Program to do.   A storage medium storing the program according to claim 11.