Information display device and control method

Abstract

This information display device 1 comprises: a display device 12 which displays a road facility list; and a control device 14 which controls the display device 12, wherein the control device 14 switches, by receiving an instruction from a user, a route map, which includes the names of two or more facilities in a safety area that are closest to the present location, to a route map including the name of a facility in a precaution area, which is further ahead on the route than the facilities in the safety area.

Description

[Technical field]

[0001] The present invention relates to an information display device that displays a route outline showing the positional relationships of a plurality of facilities along a route along which a mobile object is scheduled to travel, and a control method for displaying the route outline on the information display device. [Background technology]

[0002] Conventionally, there are navigation devices that can display a "range map" that is a map that expresses a cruising distance with concentric circles or the like. For example, Patent Document 1 discloses an information system that can display a road map screen in which cruising routes are displayed in different colors to distinguish them from roads that are not cruising routes. According to the technology disclosed in Patent Document 1, a user can intuitively grasp the cruising range from the current location by the road map displayed on the display unit.

[0003] Patent Document 2 discloses a navigation device capable of displaying a destination addition setting screen. The destination addition setting screen is provided with name fields 41a, 41b, 41c, 41d, and 41e in which the names of the indicators are displayed. The destination addition setting screen displays a charging facility indicator CFa, which is an indicator that the destination has a charging facility. The destination addition setting screen also displays a travel distance D from the departure point to the destination.

[0004] Patent Document 3 discloses a technique for calculating the risk of an EV vehicle running out of battery power for each travel section on the route to the destination of the EV vehicle, and displaying the degree of risk with a color. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2014-035215 A [Patent Document 2] JP 2011-227050 A [Patent Document 3] JP 2017-125825 A Summary of the Invention [Problem to be solved by the invention]

[0006] The navigation device disclosed in Patent Document 1 has a problem in that the locations of refill facilities such as SAs (service areas) and PAs (parking areas) are not shown on the road map screen, making it difficult for the user to intuitively grasp the distance from the user's current location to the refill facility.

[0007] The navigation device disclosed in Patent Document 2 displays the charging facility index CFa outside the name field, so the user needs to move his / her eyes to find the charging facility index CFa. In addition, the charging facility index CFa is small compared to the destination addition setting screen, and there is a risk that the user will miss it.

[0008] When driving long distances in an EV vehicle, it is common to start the drive after charging the battery. When the technology disclosed in Patent Document 3 is applied to a navigation device, the color of the planned travel section does not change immediately before the start of the drive because the risk of the battery running out is low. However, depending on the travel distance or the travel conditions, there is a possibility that the risk of the battery running out increases in some travel section, but it is possible that the section where this will happen is not displayed immediately before the start of the drive.

[0009] An object of the present invention is to provide an information display device and a program that can enable a user to intuitively grasp the location of a replenishment facility within a cruising range while suppressing the user's line of sight movement. [Means for solving the problem]

[0010] An information display device according to a first aspect of the present invention includes a display device, an input device, and a control device. The display device displays a route schematic diagram. The route schematic diagram includes a predetermined number of facility names based on a route list. The route list indicates the names of two or more facilities that exist on a route planned to be traveled by a moving body and have different distances from the current location of the moving body, and indicates the positional relationship between the facilities based on the current location of the moving body. The input device accepts instructions from a user. The control device controls the display device. The facility is a refill facility that can refill a power source for the moving body. The control device acquires information indicating a safe zone facility, information indicating a caution zone facility, and information indicating an unreachable facility. The safe zone facility is a reachable facility where the ratio of the distance to the cruising distance that the moving body can travel without refilling the power source is less than a predetermined value. The caution zone facility is a reachable facility where the ratio is equal to or greater than a predetermined value. The unreachable facility is a refill facility where it is estimated that the moving body needs to refill the power source in order to reach the facility. The control device further switches, upon receipt of an instruction from the input device, a simplified route map including the names of two or more safety zone facilities closest to the current location to a simplified route map including the names of caution zone facilities further down the route than the safety zone facilities.

[0011] The information processing device of the first aspect distinguishes between safe zone facilities, caution zone facilities, and unreachable facilities, and allows the user to select a refill facility that is more suitable for refilling the power source, thereby preventing the power source from being refilled when there is a sufficient amount of power remaining in the safe zone facility. Also, the information processing device allows the user to easily and quickly grasp the refill facility that is suitable for refilling the power source based on the user's instruction.

[0012] In the information processing device according to the first aspect of the present invention, the replenishment facility is a service area equipped with replenishment equipment. Or, the replenishment facility is a parking area equipped with replenishment equipment. Or, the replenishment facility is an interchange or intersection in the vicinity of the replenishment facility. The replenishment facility is equipment for replenishing a power source to a mobile object. The control device causes the display device to display a simplified route map in which a first figure surrounding a first position and a second figure surrounding a second position are arranged in route order, with the first figure and the second figure being different in color.

[0013] The information processing device according to the first aspect of the present invention further includes a storage device. The storage device stores map data. The control device searches for replenishment facilities within a neighborhood range based on the map data. The neighborhood range is a predetermined range based on an interchange or an intersection. The control device determines an interchange or an intersection that has a replenishment facility within the neighborhood range as a replenishment facility.

[0014] The information processing device of the first aspect can increase the number of replenishment facilities that the user can select, thereby improving convenience.

[0015] The information processing device according to the first aspect of the present invention further includes a communication device. The communication device acquires traffic information from an external device. The external device is a device outside the mobile body. The traffic information is traffic information for a route along which the mobile body is scheduled to travel. The control device stops processing when the communication device receives traffic information indicating congestion on the route.

[0016] The information processing device of the first aspect can prevent the color coding relating to congestion and the color coding relating to replenishment facilities from being mixed in the route outline map, thereby preventing the color coding of the route outline map from becoming complicated. Effect of the Invention

[0017] According to the present invention, it is possible to allow a user to intuitively grasp the location of a replenishment facility within a cruising range while suppressing the user's line of sight movement. [Brief description of the drawings]

[0018] [Figure 1] 1 is a schematic configuration diagram of an information display device according to an embodiment of the present invention. [Diagram 2] FIG. 4 is a diagram showing an example of a navigation screen. [Diagram 3] A list of facility types. [Figure 4] FIG. [Diagram 5] An image of a route list. [Figure 6]FIG. 13 is a diagram showing an example of a simplified route map including a jump button. [Figure 7] FIG. 13 is a diagram showing an example of a simplified route map displayed on the display device when a jump button is selected by a user. [Figure 8] 11 is a table showing an example of a color-coding process for traffic information. [Figure 9] 13 is a flowchart of a list update process. [Figure 10] 13 is a flowchart of a warning area information acquisition process. [Figure 11] 13 is a flowchart of a process for determining whether the vehicle is beyond the warning zone. [Figure 12] 13 is a flowchart of a display process of a jump button. [Figure 13] 13 is a flowchart of a jump process. [Figure 14] FIG. 13 is a diagram showing another example of a route schematic diagram including a jump button. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] As shown in FIG. 1, an information display device 1 according to one embodiment of the present invention includes an input device 11, a display device 12, a storage device 13 that stores a route list, and a control device 14. The control device 14 includes a first communication control unit 15, a second communication control unit 16, a navigation unit 17, a determination unit 18, and a display control unit 19. The information display device 1 is mounted on a mobile object 2. Mounting refers to the information display device 1 being in a state in which it moves together with the mobile object 2. For example, mounting refers to the information display device 1 being incorporated into the mobile object 2. Or, mounting refers to the information display device 1 being temporarily brought into the mobile object 2 by a user.

[0020] The information display device 1 is, for example, a car navigation device, a smartphone, a tablet terminal, or a personal computer. In this embodiment, the information display device 1 is a car navigation device. The moving object 2 is, for example, a vehicle. The vehicle is, for example, an automobile. The moving object 2 is, for example, a two-wheeled vehicle. The two-wheeled vehicle is, for example, a motorcycle. In this embodiment, the moving object 2 is an electric vehicle. An electric vehicle moves using electricity as a power source. In this embodiment, the moving object 2 is equipped with a position sensor 21, a power source unit 22, a communication device 23, and a refill unit 24 in addition to the information display device 1.

[0021] 2, the display device 12 displays a navigation screen 4. In this embodiment, the navigation screen 4 displays a route outline based on a route list. The route list is information including the names of two or more facilities.

[0022] As shown in FIG. 3, facilities are classified into two or more categories. Facilities are divided into facilities equipped with replenishment facilities and facilities without replenishment facilities. Replenishment facilities are facilities that can replenish the power source of the moving body 2. Hereinafter, facilities equipped with replenishment facilities are referred to as "replenishment facilities". Replenishment facilities are divided into reachable facilities and unreachable facilities. A reachable facility is a replenishment facility that is estimated to be reachable by the moving body 2 without replenishing the power source, based on the current location of the moving body 2. An unreachable facility is a replenishment facility that is estimated to require replenishment of the power source in order for the moving body 2 to reach, based on the current location of the moving body 2. A reachable facility is a replenishment facility that is closer to the current location of the moving body 2 than an unreachable facility. A reachable facility is a replenishment facility that exists within the range of the cruising range.

[0023] As shown in Fig. 4, the simplified route map includes at least one of a first graphic 7 and a second graphic 8. The first graphic 7 represents a reachable facility. The second graphic 8 represents an unreachable facility. The first graphic 7 and the second graphic 8 are different in color.

[0024] The route schematic diagram expresses the difference in the type of replenishment facility by the difference in color between the first figure 7 and the second figure 8. The route schematic diagram indicates, for example, that aaaSA (service area) and aaaPA (parking area) represented by the first figure 7 are reachable facilities. The route schematic diagram indicates, for example, that bbbPA represented by the second figure 8 is an unreachable facility. The route schematic diagram indicates, by the color of the first figure 7, that the mobile unit 2 can reach aaaSA and aaaPA without replenishing the power source. The route schematic diagram indicates, by the color of the second figure 8, that it is difficult for the mobile unit 2 to reach bbbPA without replenishing the power source. The route schematic diagram indicates that the mobile unit 2 needs to replenish the power source at aaaSA or aaaPA before bbbPA. In other words, the route schematic diagram indicates that aaaSA and aaaPA are within the range of travel, and bbbPA is outside the range of travel. In this way, the information display device 1 uses different colors for the area around the position where text data 79 indicating the names of reachable facilities is displayed on the display device 12 and the area around the position where text data 79 indicating the names of unreachable facilities is displayed on the display device 12. This allows the user to intuitively grasp the location of replenishment facilities within the driving range while minimizing eye movement compared to a configuration in which replenishment facilities are indicated by small icons.

[0025] Hereinafter, the position where text data 79 indicating the name of a reachable facility is displayed on display device 12 will be referred to as a "first position 81." The position where text data 79 indicating the name of an unreachable facility is displayed on display device 12 will be referred to as a "second position 82." Note that in Figs. 2, 4 to 7, differences in color are expressed by the presence or absence of diagonal lines or shading. In Figs. 2, 4 to 7, differences in color are expressed by differences in the width of the diagonal lines.

[0026] <Details of each component> 1 acquires position data of the mobile object 2 at a predetermined time interval. The position data indicates the current location of the mobile object 2 at the time the data is acquired. The position sensor 21 is, for example, a GPS (Global Positioning System) sensor. The position data includes, for example, latitude data and longitude data. The position sensor 21 can output the position data to the first communication control unit 15.

[0027] The power source unit 22 has a storage unit 22a and a power source sensor 22b. The storage unit 22a stores the power source. The power source is, for example, electricity, gasoline, or hydrogen. When the power source is electricity, the storage unit 22a is a battery for driving. When the power source is gasoline or hydrogen, the storage unit 22a is a container that can store the power source. The power source sensor 22b includes, for example, at least one of a current sensor, a voltage sensor, and a temperature sensor. The power source sensor 22b acquires data for the control device 14 to calculate the remaining amount of the power source stored in the storage unit 22a. When the power source is electricity, the power source sensor 22b detects, for example, the current value, voltage value, and temperature of the battery. The power source sensor 22b can output the acquired data to the determination unit 18 via the first communication control unit 15.

[0028] The communication device 23 communicates with an external device provided outside the mobile object 2. The external device is, for example, a server. An example of the server is a traffic information server 3. The traffic information server 3 distributes traffic information. The communication device 23 can acquire traffic information from the traffic information server 3. The traffic information includes, for example, congestion information. The communication device 23 is, for example, a TCU (Telematics Control Unit). The TCU performs bidirectional communication with the external device using a mobile network.

[0029] The refilling unit 24 is used to refill the storage unit 22a with a power source. The refilling unit 24 is provided facing the outside of the moving body 2. The refilling unit 24 is connected to the storage unit 22a via a cable, a pipe, or the like. In this embodiment, the refilling unit 24 is configured so as to be connectable to a charging stand via a charging cable. The charging stand can refill the storage unit 22a with electricity, which is a power source. There are two or more types of charging stands. The charging stands are classified, for example, into quick charging and normal charging. The charging stands are classified, for example, according to whether or not a charging cable is provided. The charging stands are installed, for example, in a charging station.

[0030] The input device 11 is operated by a user. The user is, for example, a driver of the moving object 2. The input device 11 is, for example, a touch panel configured integrally with the display device 12. The input device 11 is, for example, a voice input device that can input text data by voice. The input device 11 is, for example, a physical key. In this embodiment, the input device 11 is a touch panel. The information display device 1 can detect the position on the input device 11 pressed by the user's finger or a touch pen.

[0031] The display device 12 displays various images. The display device 12 is a display. The display device 12 is, for example, a touch panel. The display device 12 is, for example, a head-up display (HUD). In this embodiment, the display device 12 is a touch panel that is integrally configured with the input device 11.

[0032] As shown in FIG. 4, the display device 12 can display a current location mark 78, a first graphic 7, a second graphic 8, and facility information 83 on the route schematic diagram 5. The current location mark 78 is an image corresponding to the moving object 2. The facility information 83 includes text data 79 indicating the name of the facility. The facility information 83 may further include image data indicating various equipment provided in the facility. The image data indicating the various equipment is, for example, a refill equipment icon 80 indicating a refill equipment. The facility information 83 may further include text data indicating the equipment provided in the facility. The facility information 83 may further include text data 84 indicating the distance from the current location of the moving object 2 to the facility. The distance is the distance from the current location of the moving object 2 to the facility along the route that the moving object 2 is scheduled to travel.

[0033] The route schematic map is formed to include at least one of the first graphic 7 and the second graphic 8. The route schematic map may be formed to further include a road graphic 76. The road graphic 76 represents a road. The road graphic 76 has a fixed shape regardless of the shape of the road on which the moving object 2 travels. When the first graphic 7 and the second graphic 8 are displayed simultaneously, the route schematic map 5 places the first graphic 7 closer to the current location mark 78 than the second graphic 8. For example, the route schematic map 5 displays two first graphic images 7 and one second graphic image 8 in a row in order of proximity to the current location mark 78.

[0034] The first figure 7 and the second figure 8 each represent one facility. The frame 39 of the first figure 7 surrounds the first position 81. The frame 39 of the second figure 8 surrounds the second position 82. The display device 12 displays facility information 83 of the reachable facility within the first figure 7. The display device 12 displays facility information 83 of the unreachable facility within the second figure 8. In this embodiment, the route schematic map 5 places the first figure 7, which represents the replenishment facility closest to the current location of the mobile object 2, closest to the current location mark 78. The route schematic map 5 shows a predetermined number of facilities by at least one of the first figure 7 and the second figure 8. The predetermined number is, for example, 2 or more and 5 or less. In this embodiment, the predetermined number is 3.

[0035] 2 is, for example, 50% or more and 100% or less of the width 4a of the route schematic map 5. The vertical length 7b of the first figure 7 or the second figure 8 varies depending on the number of first figures 7 or second figures 8 displayed on the route schematic map 5. For example, when the predetermined number is 3, the vertical length 7b of the first figure 7 or the second figure 8 is 5% or more and 30% or less of the vertical length 4b of the route schematic map 5.

[0036] The route list includes information indicating the names of facilities that the mobile object 2 can stop at. The route list includes information indicating the names of facilities along the route that the mobile object 2 is scheduled to travel. The route list includes information indicating the names of facilities in order of proximity to the current location of the mobile object 2. The route schematic map 5 displays text data 79 indicating the names of facilities with a relatively short distance at a position relatively close to the current location mark 78. The route schematic map 5 displays text data 79 indicating the names of facilities with a relatively long distance at a position relatively far from the current location mark 78. In this embodiment, the positions at which the current location mark 78 and each of the text data 79 are displayed on the display device 12 correspond to the positional relationship between the current location of the mobile object 2 and each facility along the route. Such a route list includes information indicating the positional relationship between facilities with different distances from each other.

[0037] The navigation screen 4 may further include a map 6, as shown in Fig. 2. The map 6 includes, for example, a current location mark 78 and a road figure 61. The road figure 61 has a shape corresponding to the shape of the road on which the mobile object 2 travels. The display device 12 displays the navigation screen 4 on an expressway.

[0038] As shown in FIG. 3, reachable facilities are classified into two or more types depending on the distance. In this embodiment, reachable facilities are classified into four types: safe zone facilities, caution zone facilities, alert zone facilities, and danger zone facilities. Note that the number of reachable facilities is not limited to four types. There may be three types of reachable facilities. There may be two types of reachable facilities. There may be five or more types of reachable facilities.

[0039] As shown in the image in Figure 5, in this embodiment, the display device 12 can display a safety zone facility figure 71, a caution zone facility figure 72, a warning zone facility figure 73, a danger zone facility figure 74, and a second figure 8 on the route schematic diagram 5, each in a different color. The safety zone facility figure 71 is the first figure 7 representing a safety zone facility. The warning zone facility figure 72 is the first figure 7 representing a warning zone facility. The warning zone facility figure 73 is the first figure 7 representing a warning zone facility. The danger zone facility figure 74 is the first figure 7 representing a danger zone facility.

[0040] The color of the first figure 7 is set based on, for example, a color wheel. The color wheel changes in the order of green, yellow, orange, and red. The safety area facility figure 71 is, for example, green. The caution area facility figure 72 is, for example, yellow. The alert area facility figure 73 is, for example, orange. The danger area facility figure 74 is, for example, red. The second figure 8 is, for example, gray. The safety area facility figure 71 is preferably set to a color that gives a sense of security to the user. Conversely, the caution area facility figure 72 and the alert area facility figure 73 are preferably set to conspicuous colors to attract the user's attention. The color of the second figure 8 is preferably significantly different from the colors of the caution area facility figure 72 and the alert area facility figure 73. The color of the second figure 8 is preferably a color that is not included in, for example, a color wheel. In this embodiment, the first figure 7 is colored in four colors, green, yellow, orange, and red, but is not limited to this configuration. The number of colors of the first figure 7 may be less than four from the viewpoint of visibility.

[0041] The route list may include information expressing congestion between facilities by color coding based on traffic information acquired from the traffic information server 3. In this case, it is preferable that the route list includes information that makes the color coding for congestion and the color coding for the type of facility different from each other. In other words, it is preferable that the color expressing congestion and the color expressing the type of facility do not overlap with each other.

[0042] The type of replenished facility changes when the power source of the moving body 2 is replenished. For example, a warning zone facility changes to a safe zone facility when the power source of the moving body 2 is replenished. For example, an unreachable facility changes to a reachable facility when the power source of the moving body 2 is replenished.

[0043] The refueling facility is, for example, a charging station. The refueling facility is, for example, a gas station. The refueling facility is, for example, a hydrogen station. The refueling facility is, for example, an SA equipped with a charging station. The refueling facility is, for example, a PA equipped with a gas station. The refueling facility is, for example, an IC (interchange) with a hydrogen station nearby. In this embodiment, the refueling facility is an SA or PA equipped with a charging station, or an IC with a charging station nearby.

[0044] In this embodiment, the route list indicates a refilling facility and a facility without a refilling facility by the presence or absence of a refilling facility icon 80, but is not limited to this configuration. If there is a facility without a refilling facility along the route, the route list may be information that indicates the facility without a refilling facility with a figure of the same color as the second figure 8. A facility without a refilling facility is a facility that cannot refill a power source corresponding to the mobile body 2. For example, if the mobile body 2 is an electric vehicle, an SA without a charging station is a facility without a refilling facility even if a gas station is attached to it. In this embodiment, the route list indicates an IC with a charging station nearby by including a refilling facility icon 80 in the first figure 7 or the second figure 8 representing the IC. The route list may also identify whether or not a refilling facility is available by the color of the refilling facility icon 80 or some other icon.

[0045] 5 corresponds to the area displayed on the display device 12. The area 20 is the range that the user can see. The area represented in the route list can be changed by the user's operation via the input device 11. The area represented in the route list can be changed to the area ahead of the route by scrolling the simplified route map 5.

[0046] The route schematic diagram 5 may display a jump button 36 shown in FIG. 6. In this embodiment, the jump button 36 can change to an area including a caution zone facility at the end of the route without scrolling the route schematic diagram 5. The jump button 36 shows, for example, the text "Jump to recommended replenishment facility". The recommended replenishment facility is a facility for which the information display device 1 recommends the user of the moving body 2 to replenish the power source. In this embodiment, the recommended replenishment facility is a caution zone facility. The jump button 36 is displayed on the route schematic diagram 5 showing only the safety zone facilities as the facilities to be displayed. The jump button 36 is, for example, disposed next to the safety zone facility graphic 71 representing the safety zone facility to be displayed that is the furthest from the current location of the moving body 2. The jump button 36 is, for example, disposed at a position that can express that the safety zone facility graphic 71 is farther from the current location of the moving body 2 than the other safety zone facility graphic 71.

[0047] When the jump button 36 is selected by the user, the display device 12 displays the route schematic 5 showing the attention area facility at the top as the facility to be displayed, as shown in FIG. 7. That is, the display device 12 switches the route schematic 5 showing the facility closest to the current location of the moving body 2 to the route schematic 5 showing the area including the attention area facility by the jump button 36 without scrolling the route schematic 5. In this way, the information display device 1 can perform the attention area display by displaying the attention area facility, which is a facility included in the attention area, on the display device 12 by the jump button 36. Therefore, even if the cruising distance is long, the information display device 1 can move the area shown in the route schematic 5 displayed based on the route list to the vicinity of the cruising distance with one touch. This allows the user to easily and quickly grasp the refilling facility suitable for refilling the power source. Note that the first reachable facility shown in the route schematic 5 after switching is not limited to the attention area facility, and may be a warning area facility.

[0048] The storage device 13 shown in FIG. 1 has a volatile storage device in which information is erased when the power is turned off, and a non-volatile storage device in which information is not erased even when the power is turned off. The volatile storage device temporarily stores information processed by the control device 14. An example of the volatile storage device is a RAM (Random Access Memory). The non-volatile storage device is a storage capable of storing various information processing programs and various information. An example of the various information is map data. The map data is used to display the map 6. The map data is used to display the route outline map 5. An example of the non-volatile storage device is a ROM (Read Only Memory). The ROM may be, for example, a flash memory or a hard disk drive (HDD).

[0049] The map data includes road information. The road information expresses the shape of a road network as a combination of nodes and links. The nodes correspond to intersections, road ends, etc. The links correspond to positions connecting adjacent nodes. The map data includes facility information 83 and facility position data as data necessary for displaying the simplified route map 5.

[0050] The storage device 13 is accessed by the control device 14. The determination unit 18 can selectively acquire specific information from the map data. For example, the determination unit 18 can selectively acquire facility information 83 of facilities in the attention zone from the map data. Hereinafter, this information is referred to as "attention zone information". Note that the determination unit 18 is not limited to a configuration that acquires the attention zone information from the map data. The determination unit 18 may be configured to acquire the attention zone information from an external device such as the traffic information server 3. The determination unit 18 may be configured to acquire, for example, attention zone information indicating that a facility is out of order and cannot be used from an external device. For example, when the route on which the mobile object 2 is scheduled to travel is an expressway, the determination unit 18 can selectively acquire facility information 83 of facilities on the expressway from the map data. Hereinafter, this information is referred to as "expressway facility information". In this embodiment, the expressway facility information is information on at least one facility, such as an SA, PA, and IC, connected to the expressway on which the mobile object 2 is scheduled to travel.

[0051] The control device 14 is connected to the position sensor 21, the power source 22, the communication device 23, the input device 11, the display device 12, and the storage device 13 via signal lines 14a. The control device 14 only needs to be electrically connected to each of these devices. The control device 14 may be configured to be connected to these devices via a bus (not shown). The control device 14 drives, for example, various programs stored in the storage device 13 to operate. The control device 14 is configured, for example, by a CPU (Central Processing Unit). The control device 14 is configured, for example, by an MPU (Micro Processing Unit).

[0052] The first communication control unit 15 acquires position data from the position sensor 21. The position data indicates the current location of the mobile object 2 at the time the position data is acquired by the position sensor 21. The first communication control unit 15 acquires remaining amount data from the power source sensor 22b. The remaining amount data indicates the remaining amount of the power source in the accommodation unit 22a. The first communication control unit 15 acquires data from the position sensor 21 or the power source sensor 22b using, for example, CAN (CONTROLLER AREA NETWORK) communication. The first communication control unit 15 may be configured to acquire data from the position sensor 21 or the power source sensor 22b using a communication protocol such as LIN, FlexRay, or MOST.

[0053] In this embodiment, the second communication control unit 16 acquires traffic information from the traffic information server 3 via the communication device 23. To acquire the traffic information, the second communication control unit 16 transmits, for example, location data indicating the current location of the mobile object 2 to the traffic information server 3. The second communication control unit 16 receives, via the communication device 23, traffic information for the area to which the mobile object 2 is heading from the traffic information server 3.

[0054] The navigation unit 17 guides the mobile object 2 from a departure point to a destination. The navigation unit 17 sets a route based on the current location and destination of the mobile object 2. To set the route, the navigation unit 17 acquires position data indicating the current location of the mobile object 2 from the position sensor 21. To set the route, the navigation unit 17 acquires destination information. The destination information indicates the destination. The destination is set by the user via the input device 11. The destination information is stored, for example, in the volatile storage medium mentioned above. The navigation unit 17 guides the user along the route on the navigation screen 4.

[0055] The determination unit 18 determines the type of facility to be displayed. The determination unit 18 determines the type of facility based on the ratio of the distance to the available distance. The determination unit 18 calculates the available distance to calculate the ratio. The determination unit 18 calculates the available distance based on the remaining amount data. The determination unit 18 calculates the distance to calculate the ratio. The determination unit 18 calculates the distance based on position data indicating the current location of the mobile object 2 and map data. The determination unit 18 compares the distance to the facility to be displayed with the available distance. Hereinafter, this ratio will be referred to as the "available distance ratio".

[0056] In this embodiment, the determination unit 18 determines the facilities to be displayed as safe zone facilities, caution zone facilities, alert zone facilities, danger zone facilities, or unreachable facilities based on the reachable ratio. A safe zone facility is a facility whose reachable ratio is less than a first predetermined value. The first predetermined value is, for example, 50%. A safe zone facility is located at a position where replenishment of the power source is not required. A caution zone facility is a facility whose reachable ratio is equal to or greater than a first predetermined value and less than a second predetermined value. The second predetermined value is, for example, 60%. A caution zone facility is located at a position where replenishment of the power source should be recommended when the charging equipment is not being used by other users and there is space in the recharging equipment. A caution zone facility can be said to be located at a position where replenishment of the power source should be recommended when the user plans to take a break. A caution zone facility is a facility whose reachable ratio is equal to or greater than a second predetermined value and less than a third predetermined value. The third predetermined value is, for example, 75%. A caution zone facility can be said to be located at a position where replenishment of the power source is recommended. A danger zone facility is a facility with a reachable ratio equal to or greater than a third predetermined value and less than a fourth predetermined value. The fourth predetermined value is, for example, 80%. A danger zone facility is said to be located in a position where it is not appropriate to wait that long before replenishing the power source. An unreachable facility is a facility with a reachable ratio equal to or greater than the fourth predetermined value. The determination unit 18 generates at least one of information indicating a reachable facility and information indicating an unreachable facility by determining the type of facility. The information indicating a reachable facility includes at least one of information indicating a safe zone facility, information indicating a caution zone facility, information indicating a warning zone facility, and information indicating a danger zone facility.

[0057] The determination unit 18 can determine the facility closest to the current location of the moving object 2 among the caution area facilities included in the caution area. Hereinafter, this facility is also described as the "head of the caution area display." The determination unit 18 determines the facility closest to the current location of the moving object 2 among the facilities whose reachable ratio is equal to or greater than a first predetermined value and less than a second predetermined value, as the head of the caution area display. When a facility whose reachable ratio is equal to or greater than a first predetermined value and less than a second predetermined value does not have a replenishment facility, the determination unit 18 may determine a safety area facility that has a replenishment facility as the head of the caution area display. In this case, the determination unit 18 may determine the facility farthest from the current location of the moving object 2 among the safety area facilities that have a replenishment facility, as the head of the caution area display.

[0058] The determination unit 18 may be configured to stop the process of color-coding by facility type when the communication device 23 receives traffic information on the route planned to be traveled by the mobile object 2. In this case, the determination unit 18 determines the color-coding process according to, for example, the type of facility to be displayed and the content of the traffic information.

[0059] Specifically, as shown in FIG. 8, for example, when the display target is a safety area facility, the determination unit 18 determines to display traffic information on the route schematic map 5. As a result, the route schematic map 5 indicates that at least one of congestion, road closure, accident, and construction is on the route ahead of the moving object 2, but does not display information on the range. That is, the display control unit 19 displays the route schematic map 5 in which the road figure 76 has changed to green or red, for example, based on the route list and the traffic information. The green or red road figure 76 indicates that the corresponding road is congested. Alternatively, the display control unit 19 displays the route schematic map 5 in which the road figure 76 has changed to black, for example. The black road figure 76 indicates that the corresponding road is closed to traffic. Alternatively, the display control unit 19 displays a predetermined icon indicating, for example, an accident or construction on the route schematic map 5.

[0060] Furthermore, the determination unit 18 may be configured to determine not to display at least a part of the traffic information on the simplified route map 5 when the display target is a facility in a caution zone or a dangerous zone. Traffic information not to be displayed on the simplified route map 5 is, for example, traffic information indicating congestion. In this case, the simplified route map 5 may not display at least one of a road closure, an accident, construction, and the like ahead of the moving object 2. However, even if the route ahead is congested, the route outline 5 does not indicate that the route ahead is congested. When the color representing the congestion in the route outline 5 and the color of the attention zone facility figure 72 are similar colors, the determination unit 18 determines not to display traffic information indicating the congestion on the route outline 5. This makes it possible to prevent the congestion from being indistinguishable from the attention zone facility on the route outline 5. Note that, when the color scheme allows the congestion and the attention zone facility to be easily distinguished, the determination unit 18 may be configured to display the traffic information indicating the congestion on the route outline 5. The determination unit 18 makes the same determination as for the attention zone facility for the danger zone facility. Note that, when the display target is a danger zone facility, there is a risk that the power source in the storage unit 22a will run out and the mobile body 2 will be unable to travel, so the priority of displaying the traffic information indicating the congestion on the route outline 5 may be lowered compared to when the display target is a attention zone facility. That is, when the display target is a danger zone facility, the route outline 5 is less likely to display traffic information indicating the congestion than when the display target is a attention zone facility. When the display target is a dangerous facility, the route outline 5 displays traffic information indicating a road closure, and this information coexists with the display of the range using the color coding of the facility type. This allows the information display device 1 to prevent the color coding of congestion and the color coding of replenishment facilities from being mixed in the route outline 5, and prevents the color coding of the route outline 5 from becoming complicated.

[0061] In this embodiment, the determination unit 18 determines an IC that has a replenishment facility within a nearby range as a replenishment facility. The nearby range is a predetermined range based on the IC. The nearby range is, for example, within a radius of 3 km centered on the IC. The determination unit 18 searches for ICs that have a replenishment facility within the nearby range among the ICs through which the mobile body 2 is scheduled to travel, based on the map data. The determination unit 18 determines whether or not there is a replenishment facility within the nearby range that can be reached via a general road. This allows the information display device 1 to increase the number of replenishment facilities that the user can select, thereby improving convenience. The route schematic diagram may display a replenishment facility icon 80 shown in FIG. 7 within the frame 39 of the first figure 7, and the availability of the replenishment facility may be expressed by a color or an icon.

[0062] The information display device 1 as described above corresponds to a computer. In this embodiment, the first communication control unit 15, the second communication control unit 16, the navigation unit 17, the determination unit 18, and the display control unit 19 shown in FIG. 1 are realized, for example, by a hardware processor such as a CPU executing a software program stored in the storage device 13. In addition, some or all of these components may be realized by hardware such as an LSI (Large Scale Integration), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a GPU (Graphics Processing Unit), or may be realized by cooperation between software and hardware. The software program may be stored in the storage device 13 such as an HDD or a flash memory in advance. The software program may be stored in a removable storage medium such as a DVD or a CD-ROM, and may be installed by mounting the storage medium on the information display device 1.

[0063] <List update process> When the moving object 2 enters an expressway, the information display device 1 of this embodiment starts the list update process shown in the flowchart of Fig. 9. Note that "S" in each flowchart used in the following description indicates a step.

[0064] In S1, the determination unit 18 calculates the cruising distance of the moving object 2 based on the remaining power source data.

[0065] In S2, the determination unit 18 compares the remaining distance calculated in S1 with the distance from the current location of the moving object 2 to the facility to be displayed.

[0066] In S3, the determination unit 18 judges whether the facility to be displayed is a warning area facility based on the comparison result of S2. If the facility to be displayed is a warning area facility, the determination unit 18 advances the process to S4. If the facility to be displayed is not a warning area facility, the determination unit 18 advances the process to S7.

[0067] In S4, the determination unit 18 judges whether the attention area facility is the farthest facility of the display object. If the attention area facility is the farthest facility of the display object, the determination unit 18 advances the process to S5. If the attention area facility is not the farthest facility of the display object, the determination unit 18 advances the process to S6.

[0068] In S5, the determination unit 18 determines the facility that is farthest from the current location of the mobile object 2 to be the top of the attention zone display among the facilities to be displayed. This enables the information display device 1 to inform the user of the mobile object 2 that there is no replenishment facility nearby. This causes the determination unit 18 to end this process.

[0069] In S6, the display control unit 19 displays the route outline map 5 on the display device 12 based on the route list.

[0070] In S7, the determination unit 18 performs a warning area information acquisition process, thereby acquiring facility information within the warning area.

[0071] In S8, the determination unit 18 determines whether or not there is a refill facility in the facility within the warning zone, based on the highway facility information acquired from the map data stored in the storage device 13. If there is a refill facility in the facility within the warning zone, the determination unit 18 advances the process to S9. If there is no refill facility in the facility within the warning zone, the determination unit 18 advances the process to S10.

[0072] In S9, the display control unit 19 displays a route outline map on the display device 12 based on the route list.

[0073] In S10, the determination unit 18 acquires highway facility information indicating facilities ahead of the caution zone, i.e., before the caution zone, from the map data stored in the storage device 13. In this embodiment, the facilities before the caution zone are facilities in the safety zone.

[0074] In S11, the determination unit 18 determines whether or not there is a refill facility at a facility before the caution zone based on the highway facility information acquired in S10. If there is a refill facility at a facility before the caution zone, the determination unit 18 advances the process to S12. If there is no refill facility at a facility before the caution zone, the determination unit 18 advances the process to S5.

[0075] In S12, the determination unit 18 determines the facility determined in S11 to have a refill facility to be the head of the warning zone display.

[0076] In S13, the decision unit 18 performs a process of determining whether the vehicle is beyond the warning zone. Then, the decision unit 18 ends this process.

[0077] <Attention area information acquisition process> In S21 shown in FIG. 9, the determination unit 18 acquires the attention area information from the map data stored in the storage device 13.

[0078] In S22, the determination unit 18 determines whether the attention area facility is an SA or a PA based on the attention area information acquired in S21. If the attention area facility is an SA or a PA, the determination unit 18 advances the process to S23. If the attention area facility is neither an SA nor a PA, the determination unit 18 advances the process to S26.

[0079] In S23, the determination unit 18 acquires highway facility information from the map data stored in the storage device 13.

[0080] In S24, the determination unit 18 determines whether or not there is a refill facility at the SA or PA, based on the highway facility information acquired in S23. If there is a refill facility at the SA or PA, the determination unit 18 advances the process to S25. If there is no refill facility at the SA or PA, the determination unit 18 advances the process to S28.

[0081] In S25, the determination unit 18 determines the SA or PA detected in S22 as a replenishment facility, and then the determination unit 18 ends this process.

[0082] In S26, the determination unit 18 determines whether or not there is a replenishment facility within the vicinity of the IC through which the mobile object 2 is scheduled to pass. If there is a replenishment facility within the vicinity of the IC, the determination unit 18 advances the process to S27. If there is no replenishment facility within the vicinity of the IC, the determination unit 18 advances the process to S28.

[0083] In S27, the determination unit 18 determines the ICs in the caution zone as replenishment facilities, and then ends this process.

[0084] In S28, the determination unit 18 determines that there is no replenishment facility within the caution zone, and then ends this process.

[0085] <Processing to determine whether or not the target is beyond the warning zone> 11, the determination unit 18 calculates the closest distance and the farthest distance of the warning zone. The closest distance of the warning zone is the distance from the current location of the moving object 2 to the point in the warning zone that is closest to the moving object 2. The farthest distance of the warning zone is the distance from the current location of the moving object 2 to the point in the warning zone that is farthest from the moving object 2.

[0086] In S32, the determination unit 18 determines whether or not there is a facility within the security zone. If there is a facility within the security zone, the determination unit 18 advances the process to S33. If there is no facility within the security zone, the determination unit 18 ends the process.

[0087] In S33, the determination unit 18 performs a warning area information acquisition process. The warning area information acquisition process is similar to the caution area information acquisition process shown in Fig. 10. In the warning area information acquisition process, the determination unit 18 uses facility information within the warning area, not facility information within the caution area. The determination unit 18 determines the presence or absence of a supplementary facility within the warning area through the warning area information acquisition process. The determination unit 18 determines the type of facility within the warning area through the warning area information acquisition process.

[0088] In S34, the determination unit 18 determines whether or not there is a refill facility in the security zone. If there is a refill facility in the security zone, the determination unit 18 advances the process to S35. If there is no refill facility in the security zone, the determination unit 18 advances the process to S39.

[0089] In S35, the determination unit 18 determines, as the warning zone facilities, the facilities that are within the farthest distance of the warning zone, excluding the safety zone facilities and the caution zone facilities.

[0090] In S36, the determination unit 18 determines whether or not there is a facility further along the route than the warning zone. If there is a facility further along the route than the warning zone, the determination unit 18 advances this process to S37. If there is no facility further along the route than the warning zone, the determination unit 18 ends this process.

[0091] In S37, the determination unit 18 determines, excluding the unreachable facilities, the facilities located further along the route than the warning zone as dangerous zone facilities.

[0092] In S38, the determination unit 18 determines that the facilities located further along the route than the danger zone are unreachable facilities, and then the determination unit 18 ends this process.

[0093] In S39, the determination unit 18 changes the facility farthest from the caution zone to a warning zone facility. The determination unit 18 determines the facilities beyond the caution zone facility, excluding the unreachable facility, as danger zone facilities. In this way, when there is no refill facility in the caution zone, the determination unit 18 can determine the refill facility farthest from the current location of the mobile object 2 in the preceding caution zone as a warning zone facility.

[0094] In S40, the determination unit 18 determines that the facilities located further along the route than the danger zone are unreachable facilities, and then the determination unit 18 ends this process.

[0095] <<Display process of jump button 36>> The information display device 1 of this embodiment performs display processing of the jump button 36 shown in FIG. 12 when the moving object 2 enters an expressway.

[0096] In S41, the determination unit 18 determines facilities within a caution zone. This means that facilities within a warning zone and a danger zone are excluded from the display targets.

[0097] In S42, the determination unit 18 judges whether the facility in the attention area is a display target. If the facility in the attention area is a display target, the determination unit 18 ends this process. If the facility in the attention area is not a display target, the determination unit 18 advances this process to S43.

[0098] In S43, the determination unit 18 judges whether the facility in the attention area is on the same line. If the facility in the attention area is on the same line, the determination unit 18 advances the process to S44. If the facility in the attention area is not on the same line, the determination unit 18 ends the process.

[0099] In S44, the display control unit 19 displays the jump button 36 on the route schematic map 5. Thereby, the display control unit 19 ends this process.

[0100] <Jump processing> When the jump button 36 is tapped by the user, the information display device 1 of this embodiment performs the jump process shown in FIG.

[0101] In S, the determination unit 18 acquires information indicating the distance from the current location of the moving object 2 to the nearest facility among the facilities not to be displayed.

[0102] In S52, the determination unit 18 determines whether or not the facility corresponding to the information acquired in S41 is within the warning zone. If the facility is within the warning zone, the determination unit 18 advances the process to S54. If the facility is not within the warning zone, the determination unit 18 advances the process to S53.

[0103] In S53, the determination unit 18 acquires information indicating the distance to the facility that is next to the current location of the moving object 2 after the facility detected in S42, from among the facilities not to be displayed.

[0104] In S54, the determination unit 18 determines the target facility to be the top of the warning zone display. The target facility is the facility that the determination unit 18 determined to be in the warning zone in S52, or the facility that corresponds to the information acquired in S53. With this, the determination unit 18 ends this process.

[0105] As a comparative example of the present invention, an EV (Electric Vehicle) equipped with a "range map" function was However, due to the following problems, it is difficult to use while driving on the highway, and is often judged to be unusable especially when considering the next charging point during long-distance travel.

[0106] Even if the driving range is shown on a map, the names of ICs, SAs, and PAs are not shown within the driving range on the map. Or, even if the names of ICs, SAs, or PAs are shown within the driving range on the map, the letters are small and difficult to read, making them hard to see.

[0107] When the driving range is long, the user must scroll the map screen to check the driving range, which is cumbersome for the user and dangerous while driving.

[0108] Depending on the manufacturer, scrolling maps or lists while driving may not be possible due to restrictions on operation while driving.

[0109] Even if a user can see the names of ICs, SAs, or PAs within driving range on a map, it is difficult for the user to grasp the distance from the user's current location to the IC, SA, or PA.

[0110] Thus, the range map is difficult to check while the mobile object 2 is traveling, and is also difficult to understand if the user is not familiar with the area. With a range map, the user cannot see the driving range unless the map is scrolled by the user at the scale used on a typical navigation screen. It is particularly difficult to use for determining the driving range of today's EVs, whose driving ranges have increased. Also, if the user wants to know the name of a specific IC, SA, or PA while traveling, the map is difficult to read, and the user must operate the navigation screen while traveling.

[0111] In response to this, the information display device 1 of this embodiment performs the following control while the vehicle is traveling on an expressway and a route outline map is being displayed.

[0112] 1. Calculate the cruising range at regular intervals.

[0113] 2. The distance to the facilities shown on the route map is compared with the cruising distance, and the facilities shown on the route map are color-coded accordingly as "safe zone," "caution zone," "alert zone," "danger zone," or "unreachable zone."

[0114] 3. In order not to interfere with information that requires attention, such as the latest traffic congestion information, if there is a warning zone within the range that can be displayed without scrolling from the current location of the mobile unit 2, color-coded display is not performed. However, this does not include cases where there are no facilities to be displayed near the mobile unit 2. For example, this does not include cases where the distance from the current location of the mobile unit 2 to the replenishment facility to be color-coded exceeds a predetermined value. The predetermined value is, for example, 20 km. This reduces the risk that the user of the mobile unit 2 will miss a replenishment facility and be unable to replenish the power source, even when the mobile unit 2 is traveling on a highway where facilities are spaced about 30 km apart.

[0115] 4. Facilities in the caution zone and danger zone can be fixed at the farthest end of the route diagram being displayed, making it possible to use them as reminders.

[0116] 5. The display of the above 4 can be switched ON / OFF according to the user's preference.

[0117] 6. Color-coded indication applies not only to SAs and PAs, but also to ICs. For ICs, the system searches for recharge facilities on general roads within a radius of, say, 3 km around the IC, and takes these into account when determining the conditions for color-coded indication.

[0118] 7. Regarding SA and PA, the presence of replenishment facilities will be taken into consideration in the conditions for color-coding.

[0119] 8. There is no question as to whether the refilling facilities are full or empty.

[0120] 9. If there are ICs, SAs, and PAs without recharge facilities within the vicinity, the range of areas subject to color-coded display should be expanded. This will further prevent the mobile object 2 from stopping on the expressway due to a lack of power source.

[0121] 10. Regardless of whether route guidance is in progress or not, the display is color coded. If the route outline is interrupted due to a change in line, the driving range is recalculated when the route outline is displayed after the change and reflected in the route outline.

[0122] The information display device 1 of this embodiment makes it easier to determine which SA, PA, and IC the mobile body can reach without recharging the power source when the mobile body is traveling on a highway. It also reduces the user's line of sight and navigation operations, improving safety.

[0123] The information display device 1 of this embodiment can also be used suitably for EVs with extended cruising distances, and the route list can be used to display the cruising range instead of a range map. Therefore, for example, the mobile object 2 can recognize appropriate recharge facilities by the names of ICs, SAs, and PAs that the mobile object 2 is aware of while traveling on a highway, and stress caused by anxiety of not being able to grasp the cruising range even when traveling on a highway for the first time can be reduced. In addition, by simplifying the display of the route list, it is possible to display the route list on the liquid crystal display in the meter cluster or on the HUD, which can reduce the user's line of sight movement to grasp the cruising range. In addition, the route list allows the user to know the cruising range even when route guidance is not being performed.

[0124] That is, the information display device 1 of this embodiment has the following advantages.

[0125] A route map can be used to find out the distance from the current location of mobile unit 2 to an IC, SA, or PA. -By using route lists, a large screen is no longer necessary, and the display width can be increased. - Enables the display of driving range with minimal eye movement for the user. By combining this with voice recognition and steering switch operation, it is possible to pinpoint the boundaries of the vehicle's driving range. By showing "where you can go" using the names of ICs, SAs, and PAs, it is easy for users who are unfamiliar with the area or have difficulty reading maps to understand the driving range. - Not only for EVs but also for gasoline vehicles, by using this as a guide for refueling in unfamiliar rental cars or shared cars, you can prevent running out of gas.

[0126] Although the embodiments of the present invention have been described above, the device configuration, control method, and the like are not limited to the above-described embodiments.

[0127] The route schematic diagram 5 may be displayed based on a turn list, as shown in FIG. 14, for example. The turn list is information that displays intersections to be passed when traveling to a destination, road types and distances, and estimated arrival times at each intersection. In this embodiment, the jump button 36 can change the area represented by the turn list to an area including a caution zone facility at the end of the route without scrolling the route schematic diagram 5. The jump button 36 shows, for example, the text "Jump to recommended replenishment turn". The recommended replenishment turn is an intersection where a power source replenishment facility is nearby, which the information processing device / information display device 1 informs the user of the moving body 2. In this embodiment, the recommended replenishment turn is an intersection included in the caution zone. The jump button 36 is displayed on the route schematic diagram 5 that shows only intersections that are in the safety zone as intersections to be displayed. The jump button 36 and the safety zone turn figures 71 forming the route list are arranged, for example, in a line. The jump button 36 is arranged, for example, next to the safety zone turn figure 71 representing the intersection in the safety zone to be displayed that is the furthest from the current location of the moving body 2. The jump button 36 is arranged, for example, at a position that can express that the jump button 36 is farther from the current location of the moving object 2 than the other safety area turn figures 71.

[0128] For example, the information displayed on the route outline may be limited, and a display may be switched to one that is specialized for the cruising range.

[0129] In addition, by displaying a route outline5 based on the route list, the possibility of a simplified display in the HUD or meter is expanded, which can eliminate anxiety about the driving range. By displaying the route outline on a portrait screen, the visibility of the smartphone app can also be improved.

[0130] Furthermore, the information display device 1 of this embodiment is not limited to a configuration in which the moving object 2 displays a route outline map corresponding to an expressway, and may be configured to display a route list corresponding to a road other than a so-called "expressway" such as a freeway or a motorway. The information display device 1 is preferably applied to a road that is long until the next turning point. Furthermore, the information display device 1 may be configured to display a route outline map corresponding to an ordinary road.

[0131] Other configurations may also be modified in various ways without departing from the spirit of the present invention. Furthermore, the configurations of the above-described embodiment and modified examples may be combined with each other. [Explanation of symbols]

[0132] 1 Information display device 2. Mobile 7 First Figure 8 Second Figure 12 Display device 14 Control device 23 Communication Equipment 79 Text Data 81 1st position 82 2nd position

Claims

1. a display device that generates a route list indicating the names of two or more facilities that are present on a route that a moving object is scheduled to travel and that are at different distances from a current location of the moving object, and the positional relationships between the facilities with respect to the current location of the moving object as a reference, and displays a route schematic diagram including a predetermined number of names of the facilities from the route list; An input device that accepts instructions from a user; A control device that controls the display device, the facility is a resupply facility that can replenish a power source to the moving object, The control device includes: acquire information indicating safety zone facilities, which are reachable facilities where the ratio of the separation distance to the cruising distance that the moving body can travel without refilling the power source is less than a predetermined value, information indicating caution zone facilities, which are reachable facilities where the ratio is equal to or greater than the predetermined value, and information indicating unreachable facilities, which are refill facilities that are estimated to require refilling the power source in order for the moving body to reach, When the route outline includes the names of two or more of the safety area facilities closest to the current location and does not include the name of the caution area facility, a jump button is displayed; When the jump button is selected by the instruction, the route schematic diagram is switched to the route schematic diagram including the name of the caution zone facility located further ahead on the route than the safety zone facility.

1. An information display device comprising:

2. The replenishment facility is a service area having a replenishment facility for replenishing the power source to the mobile body, a parking area having the replenishment facility, or an interchange or intersection having the replenishment facility in its vicinity; The control device includes: The information display device according to claim 1, characterized in that the route schematic diagram, in which a first figure surrounding a first position and a second figure surrounding a second position are arranged in the route order, is displayed on the display device with the first figure and the second figure each having a different color.

3. Further comprising a storage device for storing map data; The control device includes: Searching for the replenishment facility within a predetermined neighborhood range based on the interchange or the intersection based on the map data; 3. The information display device according to claim 2, wherein the interchange or the intersection within which the replenishment facility is located is determined to be the replenishment facility.

4. A control method executed by an information display device including a display device, an input device that receives an instruction from a user, and a control device that controls the display device, the display device generates a route list showing the names of two or more facilities that are present on a route planned to be traveled by the mobile body and that are at different distances from the current location of the mobile body, and the positional relationships between the facilities with respect to the current location of the mobile body, and displays a route schematic diagram including a predetermined number of names of the facilities from the route list; The control device acquires information indicating safety zone facilities, which are reachable facilities where the ratio of the separation distance to the range distance that the mobile body can travel without refilling the power source is less than a predetermined value, information indicating caution zone facilities, which are reachable facilities where the ratio is equal to or greater than the predetermined value, and information indicating unreachable facilities, which are refill facilities that are estimated to require refilling the power source in order for the mobile body to reach, When the route outline includes the names of two or more of the safety area facilities closest to the current location and does not include the name of the caution area facility, a jump button is displayed; When the jump button is selected by the instruction, the route schematic diagram is switched to the route schematic diagram including the name of the caution zone facility located further ahead on the route than the safety zone facility. Control methods.

Images