JP6447360B2 - Information display device - Google Patents

Description

  The present invention relates to an information display device mounted on a vehicle.

  As an information display device mounted on a vehicle, a so-called head-up display (HUD) type that projects and displays images such as information relating to vehicle travel, information relating to traffic conditions, and information relating to surrounding facilities on a windshield of the vehicle. The device is known.

  In recent head-up display type information display devices, a technique for pre-reading and displaying guidance information existing from the current location to the destination has been proposed. For example, see Patent Document 1 and Patent Document 2.

  This pre-reading display technology refers to, for example, previously reading guidance information necessary for the driver from a database or the like, before the vehicle passes through the guidance position where the guidance information exists or before the vehicle arrives at the guidance position. In addition, the technology is displayed on the windshield and provided to the driver. The pre-read guidance information includes, for example, traffic conditions related to accidents and traffic jams occurring between the current location and the destination, and facilities where the driver between the current location and the destination is interested (for example, convenience stores and Restaurant).

JP 2011-043514 A JP-A-2005-208159

  However, the information display device described in the above-mentioned patent document merely displays an image that conveys the content of the guidance information at a height that roughly indicates the distance to the guidance position in the direction of the guidance position on the windshield. For this reason, the driver intuitively knows how far away the guidance information shown on the windshield is from the vehicle, and where the guidance information is present in the front view of the vehicle. Difficult to recognize.

  The present invention has been made in view of the above problems, and how far away the guidance information displayed on the windshield is from the vehicle, and in which position in the front view of the vehicle, It is an object to provide an information display device that allows a driver to easily recognize intuitively.

In order to solve the above problems, a first invention in the present disclosure is an information display device that displays guidance information used for vehicle travel guidance on a display unit, and the guidance information is a guidance position where the guidance information exists. A storage unit associated with the storage unit, guidance information stored in the storage unit, and a specifying unit for identifying guidance information to be displayed on the display unit based on at least a display condition including a distance from the vehicle to the guidance position; A display control unit that displays on the display unit an image that conveys the content of the specified guidance information with respect to the guidance information specified by the specifying unit, and the display control unit includes a guide position of the guide information specified from the vehicle. When the distance to is larger than the first distance, a guide line extending downward from the image toward the guide position is displayed on the display unit together with an image that conveys the content of the guide information, and the guide line is the current position of the vehicle Specific from It is characterized by varying the length according to the distance to the guide position of the guide information.

In the information display device according to the first invention, a guide line is displayed for guidance information whose distance from the vehicle to the guidance position is greater than the first distance, and an image that conveys the content of the identified guidance information, The guidance information where the guidance information is present is linked. This makes it easier for the driver to know that the guidance information is at a position farther than the first distance from the vehicle and where the guidance information shown on the display unit exists in the front view of the vehicle. . Furthermore, the length of the guide line displayed on the display unit is changed according to the distance from the current position of the vehicle to the guide position of the specified guide information. For example, the guide line of the guide information is lengthened as the distance from the vehicle to the guide position is longer, and the guide line of the guide information is shortened as the distance from the vehicle to the guide position is closer. Accordingly, the driver can easily visually grasp the distance to the guide information displayed on the display unit based on the length of the guide line.

Further, a second invention in the present disclosure is the information display device according to the first invention, wherein the display control unit is configured to display a display unit according to a distance from the current position of the vehicle to the guide position of the specified guide information. The feature is that the mode of the image that conveys the content of the guidance information displayed on the screen is changed.

In the information display device according to the second aspect of the invention , the mode of the image that conveys the content of the guidance information displayed on the display unit is changed according to the distance from the current position of the vehicle to the guidance position of the identified guidance information. For example, if the distance from the vehicle is far from the guide position, the image is displayed in a manner showing simplified contents, and if the distance from the vehicle is near the guide position, the image is displayed in a form showing detailed contents. Accordingly, the driver can easily visually grasp the distance to the guide information displayed on the display unit according to the content of the displayed information.

Further, a third invention according to the present disclosure is the information display device according to the first invention, wherein the display control unit is a second device in which a distance from the vehicle to the guide position of the specified guide information is greater than the first distance. The guide line is not displayed on the display unit when the distance is larger than the distance.

In the information display device according to the third aspect of the invention , the guide line is not displayed for the guide information whose guide position is larger than the second distance from the vehicle. Therefore, the number of guide lines displayed on the display unit can be suppressed, and it is possible to prevent the guide information from becoming troublesome for the driver.

  As described above, according to the information display device of the present invention, how far the guidance information displayed on the display unit such as the windshield is located from the vehicle, and in which position in the front view of the vehicle. It becomes easier for the driver to intuitively recognize whether it exists.

1 schematically illustrates a configuration of an information display device according to an embodiment of the present invention. The figure which illustrates the relationship between an area and the display mode of guidance information The figure explaining the example of an image of each display mode of guidance information The figure explaining the example of an image of each display mode of guidance information The figure which illustrated the image in which each display mode of guidance information is displayed on a display part The figure explaining the change of the display place and display mode of the guidance information in the display part according to the distance between the guidance position where the guidance information is present and the vehicle The flowchart which shows the procedure of the information display control performed by the information display apparatus which concerns on one Embodiment of this invention. Specific example explaining how the guide information displayed on the display changes Specific example explaining how the guide information displayed on the display changes Specific example explaining how the guide information displayed on the display changes Specific example explaining how the guide information displayed on the display changes Specific example explaining how the guide information displayed on the display changes The figure explaining the modification in this embodiment The figure explaining the modification in this embodiment

[Overview]
The information display device of the present invention is a device that performs so-called pre-reading display of guidance information that provides the driver with guidance information used for vehicle travel guidance in advance. In the information display device of the present invention, when the guidance information is displayed on the display unit such as the windshield using the head-up display mechanism, the distance from the vehicle to the position where the guidance information exists is displayed along with the image that conveys the content of the guidance information. When it corresponds to a predetermined distance, a guide line extending downward from the image toward the position where the guide information exists is displayed. As a result, if the driver understands the meaning of displaying the guide line, the guide line is displayed so that the guide information shown on the display unit is at a predetermined distance, and the vehicle It is possible to intuitively recognize at which position in the front visual field the guidance information shown on the display unit exists.

[Configuration example of information display device]
Hereinafter, an embodiment of an information display apparatus provided by the present invention will be described in order with reference to the drawings.

  FIG. 1 is a diagram schematically illustrating a configuration of an information display device 1 according to an embodiment of the present invention. 1, the information display apparatus 1 according to the present embodiment includes a vehicle information acquisition unit 10, a display condition setting unit 20, a navigation unit 30, a head-up display control unit 40, a display unit 50, and a communication unit 60. And. These components are connected to each other via, for example, a CAN (Control Area Network) bus 70.

  First, each configuration provided in the information display device 1 according to the present embodiment will be described.

  The vehicle information acquisition unit 10 acquires vehicle information related to the host vehicle. The vehicle information includes, for example, information such as the moving speed (vehicle speed) of the vehicle, the traveling direction of the vehicle, and the current position of the vehicle. For example, a speed sensor is used to acquire the vehicle speed. For example, a yaw rate sensor or a steering sensor is used to acquire the traveling direction of the vehicle. For example, a global positioning system (GPS) is used to acquire the position of the vehicle. The vehicle information acquired by the vehicle information acquisition unit 10 is output to the head-up display control unit 40 via the CAN bus 70.

  In the display condition setting unit 20, display conditions for determining guidance information to be displayed on the display unit 50 are set. The display condition to be set includes at least an area and an item (genre). The area is a condition for designating which range of guidance information is to be displayed, and includes at least the distance from the vehicle to the position where the guidance information exists (guidance position). For example, the area is specified by a predetermined range (within a radius of 1 km or the like) based on the host vehicle. In addition, if the travel route to the destination is set in the navigation unit 30, the area is also specified by a predetermined range based on the travel route (for example, within 500 m from the travel route). The item is a condition that specifies what kind of guidance information is to be displayed. For example, traffic conditions (regulations, traffic jams, accidents, etc.), commercial facilities (restaurants, gas stations, etc.), public facilities (stations, parks, etc.) , Observatory, etc.). The conditions of these areas and items are configured so that the driver of the vehicle can arbitrarily set. The conditions set in the display condition setting unit 20 are output to the head-up display control unit 40 via the CAN bus 70.

  The display unit 50 is, for example, a vehicle windshield (or front windshield glass). Predetermined guidance information is displayed by the head-up display control unit 40 at a predetermined location (hereinafter referred to as “display location”) of the display unit 50. More specifically, an image defined in advance for displaying the guidance information is projected on the display location of the display unit 50 by the head-up display control unit 40, so that the guidance information that can be visually recognized by the driver is displayed on the display unit 50. Is displayed.

  The navigation unit 30 is a so-called car navigation device having a navigation function for setting a travel route from the current location of the vehicle to the destination and guiding the travel of the vehicle. The navigation unit 30 includes a data storage unit 31 composed of a recording medium such as a DVD (Digital Versatile Disk), an SD card (Secure Digital card), or an HDD (Hard Disk Drive). In the data storage unit 31, various pieces of guide information are stored in association with guide positions indicating positions where the respective guide information exists. Specifically, map data (for example, roads, national highway numbers, intersection names, lane signs, etc.) necessary for the navigation function, and data on facilities and places existing on the map data (for example, names, genres, business hours, etc.) ) Is stored in the data storage unit 31. The data storage unit 31 may be provided in the vehicle exclusively for the control of the present invention. The travel route set by the navigation unit 30 and the data stored in the data storage unit 31 are used by the head-up display control unit 40 via the CAN bus 70.

  The communication unit 60 communicates with an information center (not shown) existing outside the vehicle and acquires various information from the information center. The information acquired by the communication unit 60 includes real-time information that the data storage unit 31 of the navigation unit 30 does not have. Real-time information includes, for example, information on traffic conditions such as “Accident at XX intersection” and “Road regulation ahead 2 km”, and information on commercial facilities such as “Gourmet ranking first place” and “Time sale from 16:00” and so on. Information acquired by the communication unit 60 is stored in a memory included in the information display device 1 such as the data storage unit 31. Note that the communication unit 60 may acquire data included in the data storage unit 31 from an information center or the like.

  The head-up display control unit 40 controls the display unit 50 to display guidance information at a predetermined place in a predetermined manner. The guidance information to be displayed, the display location for displaying the guidance information, and the display mode of the guidance information are the vehicle information acquired by the vehicle information acquisition unit 10, the display conditions set in the display condition setting unit 20, and the navigation unit 30. Based on the travel route set in step 1, the data stored in the data storage unit 31, the data acquired by the communication unit 60, and the like, the determination is made by a method described later. The head-up display control unit 40 projects, for example, from a projector (not shown) arranged in a dashboard or an instrument panel onto the display location of the display unit 50 by visible light, thereby projecting the display unit 50. The guidance information is displayed at the display location.

  The head-up display control unit 40 typically includes an electronic control unit (ECU: Electronic Processing Unit) configured by a central processing unit (CPU), a memory, an input / output interface (all not shown), and the like. Control Unit). The head-up display control unit 40 exhibits the functions of an information specifying unit 41 and a display control unit 42, which will be described later, by the CPU reading and interpreting and executing a program stored in the memory.

[Information display control in information display device]
Next, with reference to the drawings, a description will be given of the control for displaying on the display unit 50 guidance information used by the information display apparatus 1 according to the present embodiment for guidance on vehicle travel.

<Control area and display mode>
FIG. 2 is a diagram illustrating the relationship between the area set in the display condition setting unit 20 and the display mode of guidance information realized by the head-up display control unit 40. FIG. 3A is a diagram for explaining an image example of each display mode of guidance information.

  As shown in FIG. 2, in the present embodiment, three areas are set as areas. First, a first area is set based on the vehicle, a second area is set outside the first area, and a third area is set outside the second area.

  In the example of FIG. 2, the first area is set within a semicircle having a radius a1 (first distance from the vehicle) provided in front of the vehicle. In the first area, the guidance information is displayed on the display unit 50 in a mode (hereinafter referred to as “first display mode”) indicating the detailed contents. For example, as shown in FIG. 3A, the first display mode includes an image (for example, a thumbnail) obtained by imaging the content of the guidance information, the name of the guidance information, and the like.

  Further, in the example of FIG. 2, the second area is defined as a semicircle within a radius a2 (second distance from the vehicle) provided in front of the vehicle, excluding the first area. The size of the radius a2 of the second area is larger than the size of the radius a1 of the first area (a2> a1). In this second area, the guidance information is displayed on the display unit 50 in a mode (hereinafter referred to as “second display mode”) indicating simplified contents. For example, as shown in FIG. 3A, the second display mode includes an image (for example, a pictogram) reminiscent of the content of the guidance information, a guide line indicating the guidance position where the guidance information exists, and the like. In this second display mode, the guide information is displayed on the display unit 50 while being shifted in the height direction from the guide position on the actual landscape (details will be described later). The guide line includes an image that conveys the content of the guide information that is displayed on the display unit 50 while being shifted in the height direction from the guide position on the actual scenery for the guide information that is greater than the first distance from the vehicle, and the guide information It links the guide position on the actual scenery where there is.

  Further, the arc F that is the outer peripheral portion of the second area functions as a focus line. The guidance information overlapped with the focus line is displayed on the display unit 50 in a mode that can be noticed by the driver (hereinafter referred to as “highlighted display mode”). As the highlight display mode, for example, as shown in FIG. 3A, an enlarged image reflecting the content of the guidance information can be considered.

  In the example of FIG. 2, the third area is defined as a semicircle within a radius a3 (a third distance from the vehicle) provided in front of the vehicle, excluding the first and second areas. The size of the radius a3 of the third area is larger than the size of the radius a2 of the second area (a3> a2), and may be determined according to the distance to the destination set in the navigation unit 30, for example. In the third area, the guidance information is displayed in a minimum mode (hereinafter referred to as “third display mode”). For example, as shown in FIG. 3A, the third display mode includes a marker (for example, a black circle) indicating the presence of guidance information.

  Note that the areas and display modes shown in FIGS. 2 and 3A are examples, and the number and shape of the settings can be arbitrarily determined. For example, as shown in FIG. 3B, as a third display mode, a guide line indicating a guide position where the guide information exists may be displayed together with a marker indicating the presence of the guide information. Further, the area may be divided into sections other than three, and the shape thereof may be a circle, an ellipse, a polygon, etc. in addition to a semicircle. Further, the area range may extend to the rear or side of the vehicle. Further, the number of display modes may be other than four, and the display contents can be freely set.

<Information display control procedure>
FIG. 4 is a diagram exemplifying an image displayed on the display unit 50 by the head-up display control unit 40 in each display mode of the guidance information shown in FIG. 3A. FIG. 5 is a diagram for explaining changes in the display location and display mode displayed on the guide information display unit 50 according to the distance between the guide position of the guide information and the vehicle. FIG. 6 is a flowchart showing a procedure of information display control executed by the head-up display control unit 40.

  In the present embodiment, the guidance information displayed on the display unit 50 by the head-up display control unit 40 is determined according to the items set by the display condition setting unit 20. Basically, if it corresponds to an item set by the display condition setting unit 20, it can be guidance information existing in any of the first area to the third area. However, if the guidance information is specified in the range related to the travel route from the current location to the destination set by the navigation unit 30 (for example, the distance from the travel route is within 500 m), the guidance information on the rear and side of the vehicle can be obtained. Since it can be excluded, it becomes more practical control.

  In the following description, it will be explained how information display control is performed by focusing on one piece of guidance information (for example, “cafe” set by the display condition setting unit 20) halfway to the destination. To do. The flowchart shown in FIG. 6 is started, for example, when the navigation route 30 sets a travel route from the current location to the destination.

  When the travel route from the current location to the destination is set, the vehicle information acquired by the vehicle information acquisition unit 10 and the display conditions set in the display condition setting unit 20 by the information specifying unit 41 of the head-up display control unit 40 The data stored in the data storage unit 31 or the data acquired by the communication unit 60 is acquired (step S601). Then, in the information specifying unit 41, based on the acquired vehicle information, display conditions (including at least the distance from the vehicle to the guide position), and data, a display target in the middle from the current position of the vehicle to the destination Guidance information is specified (step S602).

  If guidance information to be displayed is specified in step S602, the display control unit 42 of the head-up display control unit 40 next determines an area where the specified guidance information exists (step S603). . And the process according to this judged area is performed by the display control part 42 as follows.

  If it is determined that the specified guidance information exists in the third area, that is, the guidance information is at a guidance position where the distance from the vehicle is greater than the second distance (step S603, third), the guidance information Is displayed at the display location P3 set in the upper part of the display unit 50 using the third display mode. For example, as indicated by OB3 in FIG. 4, a black circle image is displayed at the display location P3 of the display unit 50 (step S606). This display is displayed in the direction of the guidance position where the guidance information is seen from the vehicle. For the guidance information existing in the third area, no guide line is displayed.

  In the display using the third display mode, the guide information is still far away from the vehicle by displaying information on the upper side of the display unit 50 and not displaying the guide line, that is, the second distance. It plays the role of telling the driver that it exists before it. Therefore, the display mode is also a mode in which the information content is minimized. As shown in FIG. 5, the information display according to the third display mode is continuously performed until the guidance information approaches the vehicle and reaches the focus line of the second area.

  If it is determined that the specified guidance information exists in the second area (step S603, second), it is first determined whether the guidance information is on the focus line (step S604). If it is determined that the guidance information is not on the focus line (step S604, No), the guidance information is displayed at the display location P2 set in the middle of the display unit 50 using the second display mode (step S604). S608). For example, as shown by OB2 in FIG. 4, an image s2 that conveys the content of the guidance information is displayed in the direction of the guidance position where the guidance information is present as viewed from the vehicle in the display place P2, and the image s2 moves toward the guidance position. A guide line g2 extending downward is displayed. That is, the guide line g2 has a meaning of connecting the image s2 and the guide position of the guide information.

  In the display using the second display mode, the image s2 is displayed at the display place P2 below the display place P3, so that the driver is always aware that the guide position where the guide information is close to the vehicle. To play a role. In addition, the display using the second display mode uses the guide line g2, so that the guide position where the guide information is located is closer to the position at a distance greater than the first distance and smaller than the second distance from the vehicle. In addition, it also has a role of instructing the driver of the guide position where the guide information exists in the range of the front visual field of the vehicle. As shown in FIG. 5, the guidance information according to the second display mode is displayed with the height changed in the display place P2 according to the distance between the guidance position of the guidance information and the vehicle. That is, in the second display mode, the guide information is displayed on the display unit 50 by shifting in the height direction from the guide position on the actual landscape according to the distance from the vehicle to the guide position. Note that the guidance information may be displayed at a certain height from the guidance position on the actual landscape regardless of the distance from the vehicle to the guidance position.

  On the other hand, if it is determined that the guidance information is on the focus line (step S604, Yes), it is further determined whether display using the first display mode or the second display mode has been performed so far. Determination is made (step S605). This determination is made only for the guidance information approaching from the third area to the second area in order to perform display using the highlighted display mode. That is, it means that the guidance information that has already been displayed using the first display mode or the second display mode is not displayed in the highlighted display mode even if the guidance information is subsequently applied to the focus line. Therefore, if display using the first display mode or the second display mode has been performed so far (step S605, Yes), display of guidance information using the second display mode is executed (step S608). ).

  If it is determined that the display using the first display mode or the second display mode has not been performed yet (step S605, No), the guidance information is displayed on the display unit 50 (display location P3) using the highlighted display mode. (Step S607). For example, as shown by OB <b> 2 ′ in FIG. 4, an image that conveys the content of the guidance information is displayed so as to protrude from the display area. This display is temporarily displayed in the direction of the guidance position where there is guidance information as viewed from the vehicle.

  The display using this highlighting display mode plays a role of notifying (notifying) the driver that the guidance information has approached the vehicle by displaying information on the upper side of the display unit 50 in a highlighted manner.

  If it is determined that the specified guidance information exists in the first area (step S603, first), the guidance information is displayed at the display location set in the lower part of the display unit 50 using the first display mode. It is displayed on P1 (step S609). For example, as shown by OB1 in FIG. 4, an image s1 that conveys the content of the guidance information is displayed in the direction of the guidance position where the guidance information is present when viewed from the vehicle in the display place P1.

  In the display using the first display mode, the image s1 is displayed at a display place P1 further lower than the display place P2, so that the guide position of the guide information has approached the vehicle considerably, ie, the first It plays a role in strongly telling the driver that it exists before the distance. In addition, the first display mode is intended to present guide information in more detail than the second display mode that is displayed in a simplified manner. For this reason, it is desirable that the image s1 is larger than the image s2 and is easier to understand, and it is more preferable that the name of the guidance information is also presented. As shown in FIG. 5, the guidance information according to the first display mode is displayed at the display location P1 at a constant height regardless of the distance between the guidance position of the guidance information and the vehicle. That is, in the first display mode, the guidance information is displayed on the display unit 50 so as to be superimposed on the guidance position on the actual landscape regardless of the distance from the vehicle to the guidance position.

  The processes in steps S601 to S609 described above are repeatedly performed until the information display process ends (step S610, Yes).

  In the above example, the information display control performed for one piece of guidance information has been described. However, if a plurality of guide information is specified by the information specifying unit 41 of the head-up display control unit 40, the information display control described above is performed for each of the plurality of guide information.

  In FIG. 4, in order to easily understand the difference between the display modes, a diagram in which each display mode related to one piece of guidance information is simultaneously displayed on the display unit 50 is used. However, any one display mode is used to display one guide information, and actually, a plurality of display modes are not simultaneously displayed for one guide information as shown in FIG.

<Specific examples of information display control>
Furthermore, with reference to FIGS. 7A to 7E, how the guidance information displayed on the display unit 50 changes as the vehicle progresses will be described using a specific example. 7A to 7E, when three pieces of guidance information T1, T2, and T3 are specified for the travel route from the current location to the destination, the process of the vehicle traveling toward the destination and the vehicle position thereof Fig. 6 shows how the guidance information is displayed on the windshield of the vehicle.

  In the vehicle position shown in FIG. 7A, the specified three pieces of guidance information T1, T2, and T3 are all present in the third area, that is, the guidance position is located at a position where the distance from the vehicle is larger than the second distance. There is. Thus, each piece of guidance information is displayed in the third display mode in the direction of the guidance position where the guidance information is present when viewed from the vehicle at the display location P3 of the display unit 50. In this example, in order to make the destination easy to understand, information is displayed with a contrast different from the guidance information T1, T2, and T3. The display according to the third display mode may be color-coded according to the type of item.

  At the vehicle position shown in FIG. 7B in which the vehicle has advanced, since the guide position of the guide information T1 has reached the focus line of the second area, the guide information T1 is the guide information T1 as viewed from the topmost vehicle of the display unit 50. Is displayed in a highlighted manner in the direction of a certain guide position. In this example, since the guide information T1 is a ramen shop, an image diagram of ramen is displayed as a highlighted display mode. The display of the guidance information in this highlighted manner is temporarily performed, for example, until the vehicle travels 10 m or only for 5 seconds.

  The temporary information display of the guidance information T1 in the highlighted display mode is finished, and the guidance position of the guidance information T1 is larger than the first distance and smaller than the second distance at the vehicle position shown in FIG. 7C. In position. Therefore, the guidance information T1 is displayed in the second display mode in the direction of the guidance position where the guidance information T1 is present when viewed from the vehicle at the display location P2 of the display unit 50. In this example, using the picto sign, the guide information T1 is transmitted to the restaurant, and further using the guide line connecting the picto sign and the guide position where the guide information T1 is located, the guide information in the range of the front vision of the vehicle. T1 indicates an approximate position (direction).

  Further, at the vehicle position shown in FIG. 7D where the vehicle has advanced, since the guide position of the guide information T2 has reached the focus line of the second area, the guide information T2 is the guide information as viewed from the topmost vehicle of the display unit 50. T2 is displayed in a highlighted manner in the direction of a certain guide position. In this example, since the guide information T2 is a sushi restaurant, an image diagram of nigiri sushi is displayed as a highlighted display mode. Further, since the guidance information T1 has also approached the vehicle, the guidance information T1 has a lower picto-sign display location and a shorter guide line as compared to FIG. 7C.

  Then, at the vehicle position shown in FIG. 7E where the vehicle has further advanced, the guidance position of the guidance information T1 has reached the first area, that is, the vehicle has approached a position that is equal to or less than the first distance from the vehicle. The first display mode is displayed in the direction of the guide position where the guide information T1 is seen from the vehicle at the display location P1 of the display unit 50. In this example, the thumbnail information of ramen is used to convey that the guidance information T1 is a restaurant.

  The information display control related to the guidance information described above is executed for the guidance information on the travel route until the vehicle arrives at the destination.

[Effect of the embodiment]
In the information display device 1 according to the above-described embodiment, when the head-up display control unit 40 displays the guidance information on the display unit 50, from the vehicle to the guidance position where the guidance information exists, together with an image that conveys the content of the guidance information. When the distance corresponds to a predetermined distance, a guide line extending downward from the image toward the guide position where the guide information exists is displayed.

  For example, when the display mode of the guide information shown in FIG. 3A is used, a guide line is displayed together with an image that conveys the content of the guide information for the guide information whose guide position is in the second area. If the driver understands the meaning of displaying the guide line by the display using the guide line, the guide information on which the guide line is displayed indicates that the distance from the vehicle is greater than the first distance and the second It is possible to intuitively recognize that the position is smaller than the distance and the approximate position (direction) where the guide information is shown. In addition, since the guide line is not displayed for the guidance information existing in the third area, the driver can intuitively recognize that the guidance information is located at a position where the distance from the vehicle is larger than the second distance. By suppressing the number of guide lines displayed on the part 50, priority can be given to the visibility of information by the driver.

  Further, for example, when the display mode of the guide information shown in FIG. 3B is used, a guide line is displayed together with an image that conveys the content of the guide information for the guide information whose guide position exists in the second and third areas. If the driver understands the meaning of displaying the guide line by the display using the guide line, the guide information on which the guide line is displayed is at a position where the distance from the vehicle is larger than the first distance. In addition, the general position (direction) where the guide information is shown can be recognized intuitively.

  Further, in the information display device 1 according to the present embodiment, the display location of the guide information and the length of the guide line on the display unit 50 are changed according to the relative distance between the vehicle and the guide position of the guide information. For example, the guide line of the guide information is lengthened as the distance from the vehicle to the guide position is longer, and the guide line of the guide information is shortened as the distance from the vehicle to the guide position is closer. By changing the guide line according to the relative distance, the driver can easily visually grasp the distance to the guide information displayed on the display unit 50 based on the length of the guide line.

  Furthermore, in the information display device 1 according to the present embodiment, the mode of the image that conveys the content of the guidance information displayed on the display unit 50 is changed according to the relative distance between the vehicle and the guidance position of the guidance information. For example, if the distance from the vehicle is far from the guide position, the image is displayed in a manner showing simplified contents, and if the distance from the vehicle is near the guide position, the image is displayed in a form showing detailed contents. By changing the mode of the image that conveys the content of the guidance information according to the relative distance, the driver can easily visually grasp the distance to the guidance information displayed on the display unit 50 according to the content of the displayed information. be able to.

[Modification]
In the present embodiment, a plurality of specified guidance information is simultaneously displayed on the display unit 50. For this reason, although the distance from the vehicle is different, a plurality of pieces of guidance information existing in the same direction may be displayed in a state where the display locations of the display unit 50 are close to each other and overlapped. In such a case, for example, if two pieces of guidance information according to the second display mode are displayed in a superimposed manner, the information becomes difficult to understand and hinders the driver from grasping the information.

  Therefore, in such a case, the guide line is displayed only for the guide information whose guide position is the shortest distance from the vehicle, even if the guide information is a target for displaying the guide line, and other guides whose display locations overlap with each other. For information, only an image (such as a graphic) that conveys the contents may be displayed (FIG. 8). Thereby, when a plurality of pieces of guidance information are displayed on the display unit, it is possible to suppress display that is troublesome for the driver and display that is difficult to grasp the information.

  Alternatively, the guidance information whose guidance position is at the shortest distance from the vehicle may be displayed with information with a high contrast, and other guidance information with overlapping display locations may be displayed with information with a low contrast. Alternatively, the guidance information whose guidance position is at the shortest distance from the vehicle may be blinked for information display, and other guidance information overlapping the display location may be displayed without blinking.

  In the present embodiment, the shape of the guide line has been described as an example of a shape that extends straight in the road surface direction from an image (such as a graphic) that conveys the content of the guide information. However, the shape of the guide line is not limited thereto. For example, a guide line as shown in FIG. 9 may be used as long as the guidance position where the guidance information exists can be pointed out in association with an image that conveys the content of the guidance information. If the guide position is on the upper floor of the building, a guide line pointing upward rather than on the road surface may be used.

  The present invention relates to an information display device mounted on a vehicle, a distance from the vehicle to which the guidance information displayed on the display unit is located, and a position in the front view of the vehicle. This is useful when you want to make it easier to recognize intuitively.

DESCRIPTION OF SYMBOLS 1 Information display apparatus 10 Vehicle information acquisition part 20 Display condition setting part 30 Navigation part 31 Data storage part 40 Head-up display (HUD) control part 41 Information specific part 42 Display control part 50 Display part 60 Communication part 70 CAN bus

Claims (3)

An information display device for displaying guidance information used for vehicle travel guidance on a display unit,
A storage unit for storing the guide information in association with a guide position where the guide information exists;
A specifying unit for specifying the guide information to be displayed on the display unit based on the guide information stored in the storage unit and a display condition including at least a distance from the vehicle to the guide position;
A display control unit for displaying on the display unit an image that conveys the content of the specified guidance information for the guidance information specified by the specifying unit;
When the distance from the vehicle to the guidance position of the identified guidance information is greater than the first distance, the display control unit moves from the image toward the guidance position together with an image that conveys the content of the guidance information. A guide line extending downward is displayed on the display unit, and the length of the guide line is changed according to the distance from the current position of the vehicle to the guide position of the specified guide information. Information display device.   The display control unit changes a mode of an image that conveys the content of the guidance information displayed on the display unit according to a distance from a current position of a vehicle to the guidance position of the identified guidance information. The information display device according to claim 1.   The display control unit does not display the guide line on the display unit when a distance from the vehicle to the guidance position of the identified guidance information is further larger than a second distance larger than the first distance. The information display device according to claim 1, wherein:

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