Information display device

Abstract

To provide an information guidance device capable of providing guidance on the size of a disaster-stricken area and road information in the surroundings of a vehicle.SOLUTION: An information display device is provided, comprising an acquisition unit for acquiring disaster information corresponding to a current location of a vehicle, a first image generation unit configured to generate a first image displaying the current location of the vehicle on a narrow area map showing the surroundings of the vehicle, a second image generation unit configured to generate a second image displaying an entire disaster-stricken area identified from the disaster information and the current location of the vehicle on a wide area map showing the surroundings of the vehicle, and a display control unit configured to display the first image and the second image side-by-side on a display unit provided in a vehicle cabin.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an information display device.

Background Art

[0002] Patent Document 1 discloses an in-vehicle information terminal that, when receiving a disaster danger notification, notifies a user of information about the location where the disaster occurred, based on the vehicle position. In this document, it is proposed to display the vehicle position and the direction of the disaster occurrence area based on the vehicle position on a map displayed on a display (see FIG. 6 of Patent Document 1). Further, in this document, it is proposed to prominently display the vehicle position and the target area of the disaster occurrence area on a map displayed on the display (see FIG. 9 of Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technology described in Patent Document 1, displaying the vehicle position and the direction of the disaster occurrence area based on the vehicle position on the map serves as a deterrent force to prevent the vehicle from heading towards the disaster occurrence area. However, as long as the direction of the disaster occurrence area is displayed, it is difficult for the user to grasp the scale of the disaster. Further, when the target area of the disaster occurrence area is displayed on the map, if the target area is wide, the map scale becomes small, making it difficult to grasp the roads around the vehicle. Therefore, there is room for improvement in guiding the scale of the disaster occurrence area and the road information around the vehicle in the technology described in Patent Document 1.

[0005] In consideration of the above facts, an object of the present invention is to provide an information guidance device capable of guiding the scale of a disaster occurrence area and road information around a vehicle.

Means for Solving the Problem

[0006] First aspect The information display device according to the present invention includes an acquisition unit that acquires disaster information corresponding to the current position of the vehicle, a first image generation unit that generates a first image in which the current position of the vehicle is displayed on a narrow-area map showing the vicinity of the vehicle, a second image generation unit that generates a second image in which the entire disaster occurrence area specified from the disaster information and the current position of the vehicle are displayed on a wide-area map showing the vicinity of the vehicle, and a display control unit that displays the first image and the second image side by side on a display unit provided in the vehicle interior. The first image can have its map scale changed according to user settings. When the map scale of the first image is set to be larger than the map scale of the second image, the display control unit causes the first image and the second image to be displayed side by side on the display unit. When the map scale of the first image is set to be less than or equal to the map scale of the second image, only the second image is displayed on the display unit. 。

[0007] First aspect Specifically, it acquires disaster information corresponding to the current position of the vehicle, and generates a first image showing a narrow-area map of the vicinity of the vehicle and a second image showing a wide-area map of the vicinity of the vehicle. Then, the information display device displays the first image and the second image side by side on a display unit provided in the vehicle interior.

[0008] Here, the current position of the vehicle is displayed on the narrow-area map of the vicinity of the vehicle in the first image. Therefore, by looking at the first image, the roads in the vicinity of the vehicle can be grasped. On the other hand, in the second image, the entire disaster occurrence area specified from the disaster information and the current position of the vehicle are displayed on the wide-area map of the vicinity of the vehicle. Therefore, by looking at the second image, the scale of the disaster can be grasped. In this way, the information display device can guide the user in the vehicle interior about the scale of the disaster occurrence area and the road information in the vicinity of the vehicle.

[0010] Also, the first aspectIn the case where the scale of the map in the first image is set to be larger than the scale of the map in the second image, the information display device displays the first image and the second image side by side on the display unit. That is, when the map shown in the first image shows a narrower area enlarged compared to the map shown in the second image, the first image and the second image are displayed side by side on the display unit. On the other hand, when the scale of the map in the first image is set to be less than or equal to the scale of the map in the second image, the information display device displays only the second image on the display unit. That is, when the map shown in the first image shows the same area as the map shown in the second image, or when the map shown in the first image shows a wider area reduced compared to the map shown in the second image, the two images are integrated and only the second image is displayed. In this way, in the information display device, when it is determined that the first image displays more details around the vehicle than the second image based on the scale of the map, the first image is displayed side by side with the second image, and otherwise, the two images are integrated and only the second image is displayed. Thereby, according to the user's setting, the amount of information on the display unit when driving near the disaster-stricken area is optimized.

[0011] Second aspect is First aspect In this case, when the current position of the vehicle is outside the disaster-stricken area and is separated from the disaster-stricken area by a predetermined distance or more, the display control unit displays only the first image on the display unit.

[0012] Second aspect In this case, when the current position of the vehicle is outside the disaster-stricken area and is separated from the disaster-stricken area by a predetermined distance or more, only the first image is displayed on the display unit. Thereby, for example, when the vehicle is away from the disaster-stricken area and the safety of the user is ensured, the two images are integrated and only the first image is displayed. Thereby, the amount of information on the display unit when driving at a point sufficiently away from the disaster-stricken area is optimized.

[0013] Third aspect is First aspectIn addition, it further includes a route proposal unit that proposes a route from the current position of the vehicle to the destination. When the destination of the vehicle is set to a first point inside the disaster occurrence area, the route proposal unit sets a second point outside the disaster occurrence area as a new destination candidate, and the display control unit causes the first image and the second image to display the route to the second point.

[0014] Third aspect In this case, the display unit can display the route from the current position of the vehicle to the destination and propose the driving route of the vehicle. Here, in the information display device, when the destination of the vehicle is set to a first point inside the disaster occurrence area, a second point outside the disaster occurrence area is set as a new destination candidate. Then, the information display device causes the first image and the second image to display the route to the second point. As a result, for a vehicle heading towards a destination inside the disaster occurrence area, it is possible to guide the route to the destination candidate outside the disaster occurrence area, so that for a vehicle in the vicinity of the disaster occurrence area, it is possible to guide an evacuation route according to the current position of the vehicle.

[0015] Fourth aspect is First aspect In this case, the disaster information includes a satellite image taken by an artificial satellite of the ground, and based on the satellite image, the disaster occurrence area is specified.

[0016] Fourth aspect In this case, based on a satellite image taken by an artificial satellite of the ground, the disaster occurrence area is specified. As a result, even when detailed information about the disaster occurrence area cannot be obtained from a public institution, it is possible to quickly guide the scale of the disaster occurrence area and the road information around the vehicle by looking at the area based on the disaster information from an overhead view.

Advantages of the Invention

[0017] As described above, in the information display device according to the present invention, it is possible to guide the scale of the disaster occurrence area and the road information around the vehicle. Together with this, according to user settings, the amount of information on the display unit when driving near the disaster-stricken area can be optimized. .

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Mode for Carrying Out the Invention

[0019] Hereinafter, the system S according to the present embodiment will be described with reference to FIGS. 1 to 7. The system S according to the present embodiment is a system that guides a user in the vehicle interior about the scale of the disaster occurrence area and the road information around the vehicle.

[0020] As shown in FIG. 1, the system S includes a server 10, a vehicle 20, a disaster information center 30, and a satellite 40. In the system S, the server 10, the vehicle 20, and the disaster information center 30 are connected via a network N.

[0021] The server 10 is a server computer and acquires an image (hereinafter, also referred to as a "satellite image") taken by the satellite 40 from the satellite 40. Note that the satellite image can be, for example, an image that captures a ground area of 0.5 km to 20 km square. The server 10 also acquires disaster information transmitted from the disaster information center 30.

[0022] Vehicle 20 has an information display device 50 connected to server 10 via network N. The information display device 50 acquires satellite images and disaster information from server 10, and causes an image generated based on the acquired information to be displayed on a display unit 16 (see FIG. 2). In FIG. 1, only one vehicle 20 is illustrated, but actually, information display devices 50 of a plurality of vehicles 20 are connected via network N.

[0023] The disaster information center 30 is a public institution that distributes disaster information indicating the disaster occurrence area, the disaster occurrence situation, etc. at the time of a disaster occurrence via a wide-area communication network.

[0024] The artificial satellite 40 orbits on an earth satellite orbit at a predetermined period and photographs the ground. The number of times the artificial satellite 40 orbits the earth in one day and the altitude of the orbit of the artificial satellite 40 are arbitrary. In FIG. 1, only one artificial satellite 40 is illustrated, but it is desirable that the artificial satellite 40 is composed of a plurality of artificial satellites capable of photographing the same point on the ground.

[0025] The hardware configuration of the information display device 50 will be described. FIG. 2 is a block diagram showing the hardware configuration of the information display device 50.

[0026] As shown in FIG. 2, the information display device 50 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a storage unit 14, an input unit 15, a display unit 16, and a communication unit 17. Each component is connected to be communicable with each other via a bus 18.

[0027] The CPU 11 is a central arithmetic processing unit that executes various programs and controls each unit. The CPU 11 reads a program from the ROM 12 or the storage unit 14 and executes the program using the RAM 13 as a work area. The CPU 11 performs control of the above components and various arithmetic processes according to a program recorded in the ROM 12 or the storage unit 14.

[0028] The ROM 12 stores various programs and various data. The RAM 13 temporarily stores programs or data as a working area.

[0029] The storage unit 14 is composed of a storage device such as an HDD (Hard Disk Drive), an SSD (Solid State Drive), or a flash memory, and stores various programs and various data. In the storage unit 14, a program 14A for causing the CPU 11 to execute image display processing and route display processing described later is stored.

[0030] The input unit 15 includes operation switches, microphones, cameras, etc. provided in the vehicle interior of the vehicle 20, and is used to perform various inputs.

[0031] The display unit 16 is, for example, a liquid crystal display provided in the vehicle interior, and preferably is composed of a display provided on the instrument panel on the front side of the driver's seat. The display unit 16 displays various information for the user in the vehicle interior. The display unit 16 may adopt a touch panel method and function as the input unit 15.

[0032] The communication unit 17 is an interface for communicating with other devices. For this communication, for example, a standard for wired communication such as Ethernet (registered trademark) or FDDI, or a standard for wireless communication such as 4G, 5G, Bluetooth (registered trademark), or Wi-Fi (registered trademark) is used. The communication unit 17 is connected to the network N.

[0033] Next, the functional configuration of the information display device 50 will be described. FIG. 3 is a first block diagram showing an example of the functional configuration of the information display device 50. The information display device 50 is configured to include an acquisition unit 11A, a first image generation unit 11B, a second image generation unit 11C, a route proposal unit 11D, and a display control unit 11E as functional configurations. Each functional configuration is realized by the CPU 11 reading and executing the program 14A stored in the ROM 12 or the storage unit 14.

[0034] The acquisition unit 11A acquires map data around the vehicle and disaster information. The map data around the vehicle is acquired from a server 10 or the like as map data around the current position of the vehicle 20 specified based on a signal from a GPS (Global Positioning System) sensor (not shown). Also, when a high-precision map is stored in the internal storage of the vehicle 20, the acquisition unit 11A may acquire the map data from the storage unit 14.

[0035] The disaster information includes information transmitted from a disaster information center 30 and information obtained from a satellite image taken by an artificial satellite 40 of the ground in the disaster occurrence area. The acquisition unit 11A acquires disaster information transmitted for areas within a predetermined area from the vehicle 20 based on the current position of the vehicle 20. The disaster information may be acquired directly from the disaster information center 30 or via the server 10. The disaster information includes the disaster occurrence area, the disaster occurrence situation, and the like.

[0036] The first image generation unit 11B generates a first image. As shown in FIG. 4, the first image 60 is an image in which an icon V indicating the current position of the vehicle 20 is displayed on a map showing the surroundings of the vehicle. Further, the direction M of the disaster occurrence area is shown at the upper part of the first image 60. The scale of the map in the first image 60 can be changed according to the user's setting. Therefore, according to the user's setting, the map shown in the first image 60 can be a narrow-area map or a wide-area map.

[0037] Also, when a travel route of the vehicle 20 is proposed by the route proposal unit 11D, the first image generation unit 11B generates an image in which the travel route is displayed on the map of the first image.

[0038] The second image generation unit 11C generates a second image. As shown in FIG. 4, the second image 70 is an image in which the entire area of the disaster occurrence area specified from the disaster information and the current position of the vehicle 20 are displayed on a wide-area map showing the vicinity of the vehicle. In an example of FIG. 4, an area X showing the entire area of the disaster occurrence area is displayed in a different color from other areas on the map. Also, an icon V indicating the current position of the vehicle 20 is displayed on the map. The scale of this second image 70 is fixed according to the size of the disaster occurrence area and the relative positional relationship with the vehicle 20, and is designed so that the user cannot change the scale of the map.

[0039] Here, the disaster occurrence area is specified based on at least one of the information transmitted from the disaster information center 30 and the satellite image obtained by the artificial satellite 40 photographing the ground. When specifying the disaster occurrence area from the satellite image, for example, by analyzing the satellite image of the area designated as the evacuation area at the disaster information center 30, the area where it is difficult for the vehicle to travel can be specified as the disaster occurrence area. Furthermore, by comparing the data obtained by acquiring the satellite images of the same area in time series, the disaster occurrence area can be updated.

[0040] Also, when the route proposal unit 11D proposes a driving route for the vehicle 20, the second image generation unit 11C generates an image in which the route is displayed on the map of the second image.

[0041] The route proposal unit 11D proposes a driving route from the current position of the vehicle 20 to the destination. Specifically, when the destination is set by the user, the route proposal unit 11D refers to the map data and specifies the driving route from the current position of the vehicle to the destination. The specified driving route is displayed on the map displayed on the display unit 16 in the vehicle interior.

[0042] Here, when the destination of the vehicle 20 is set to the first point inside the disaster area at the time of a disaster, the route proposal unit 11D sets the second point outside the disaster area as a setting candidate for a new destination and proposes a route to the second point. This second point may be an evacuation location designated by the disaster information center 30, or a location preset by the user as an emergency evacuation location. Alternatively, a destination outside the disaster area may be selected from the destinations set by the user in the past and set as a destination candidate.

[0043] Referring to FIG. 5 for explanation, the destination G1 set by the user is inside the disaster area X. For this reason, the second point G2 outside the disaster area X is set as a destination candidate, and a route R2 from the current position of the vehicle 20 to the second point G2 is displayed on the map displayed on the display unit 16. The user can compare the route R1 to the original destination G1 and the route R2 to the destination candidate G2 and consider evacuation.

[0044] The display control unit 11E controls the image to be displayed on the display unit 16. For example, when the ignition switch of the vehicle 20 is turned ON, the display control unit 11E causes the display unit 16 to display a first image. Further, when disaster information is acquired, the display control unit 11E causes the display unit 16 to display a second image.

[0045] Here, the display mode of the second image is changed according to the scale of the map of the first image and the scale of the map of the second image. Specifically, when the scale of the map of the first image is set larger than the scale of the map of the second image, the second image is displayed side by side with the first image on the display unit 16. When the scale of the map of the first image is set larger than the scale of the map of the second image, as shown in FIG. 4, the map shown in the first image 60 shows a narrower area enlarged than the map shown in the second image 70. Therefore, the user can grasp the details of the roads around the vehicle by looking at the first image 60, and can intuitively grasp the scale of the disaster by looking at the second image 70.

[0046] On the one hand, when the scale of the map of the first image is set to be equal to or smaller than the scale of the map of the second image, only the second image is displayed on the display unit 16. When the scale of the map of the first image is set to be equal to or smaller than the scale of the map of the second image, the first image shows the same area as the map shown in the second image or shows a reduced area wider than the map shown in the second image. In such a case, since the map information obtained from the first image and the map information obtained from the second image are approximated, the display control unit 11E integrates the two images and displays only the second image.

[0047] Also, when the vehicle 20 has left the disaster occurrence area and is in a state where safety is ensured, only the first image is displayed on the display unit 16. Specifically, when the position of the vehicle 20 is outside the disaster occurrence area and is separated from the disaster occurrence area by a predetermined distance or more display only the first image .

[0048] (Image display process) FIG. 6 is a flowchart showing the flow of an image display process in which the information display device 50 guides the user about the scale of the disaster occurrence area and the road information around the vehicle. As an example, when the ignition switch of the vehicle 20 is turned ON, the image display process is executed. The image display process is performed by the CPU 11 reading the program 14A from the storage unit 14, expanding it in the RAM 13, and executing it, thereby performing the output process.

[0049] In step S10 shown in FIG. 6, the CPU 11 acquires map data around the vehicle by the function of the acquisition unit 11A. Then, the CPU 11 proceeds to the process of step S11.

[0050] In step S11, the CPU 11 displays only the first image on the display unit 16. At this time, when the destination of the vehicle 20 is set by the user, the route to the destination proposed by the route proposal unit 11D is displayed on the map of the first image. Then, the CPU 11 proceeds to the process of step S12.

[0051] In step S12, the CPU 11 determines whether there is disaster information. When disaster information targeting within a predetermined area is acquired based on the current position of the vehicle 20, the determination in step S12 is affirmed, and the CPU 11 proceeds to the process of step S13. On the other hand, when disaster information targeting within a predetermined area has not been acquired, the determination in step S12 is negated, and the CPU 11 ends the image display process.

[0052] In step S13, the CPU 11 executes route display processing. This route display processing will be described later. Then, the CPU 11 proceeds to the process of step S14.

[0053] In step S14, the CPU 11 determines whether the scale of the first image is set to be less than or equal to the scale of the second image. That is, when the first image shows the same area as the map shown in the second image or shows a wider area reduced compared to the map shown in the second image, the determination in step S14 is affirmed. When the determination in step S14 is affirmed, the CPU 11 proceeds to the process of step S15. On the other hand, when the first image shows a narrower area enlarged compared to the map shown in the second image, the determination in step S14 is negated, and the CPU 11 proceeds to the process of step S16.

[0054] In step S15, the CPU 11 causes only the second image to be displayed on the display unit 16. Then, the CPU 11 proceeds to the process of step S17.

[0055] In step S16, the CPU 11 causes the first image 60 and the second image 70 to be displayed side by side on the display unit. Then, the CPU 11 proceeds to the process of step S17.

[0056] In step S17, the CPU 11 determines whether the current position of the vehicle 20 is outside the disaster occurrence area. Specifically, if the current position of the vehicle 20 is outside the disaster occurrence area and is separated from the disaster occurrence area by a predetermined distance or more, the determination in step S17 is affirmed. When the determination in step S17 is affirmed, the CPU 11 proceeds to the process of step S18. On the other hand, if the current position of the vehicle 20 is less than the predetermined distance from the disaster occurrence area, the determination in step S17 is negated, and the CPU 11 proceeds to the process of step S19.

[0057] In step S18, the CPU 11 causes only the first image to be displayed on the display unit 16. Then, the CPU 11 proceeds to the process of step S19.

[0058] In step S19, the CPU 11 determines whether there is disaster information. If disaster information targeting within a predetermined area is not acquired based on the current position of the vehicle 20, the determination in step S19 is affirmed. When the determination in step S19 is affirmed, the CPU 11 ends the image display process. On the other hand, when the determination in step S19 is negated, the CPU 11 returns to the process of step S13.

[0059] (Route display process) Next, with reference to FIG. 7, a route display process in which the information display device 50 guides a route from the vehicle 20 to a destination candidate outside the disaster occurrence area to the user will be described.

[0060] In step S130 shown in FIG. 7, the CPU 11 determines whether a destination of the vehicle 20 is set. If the destination of the vehicle 20 is set, the determination in step S130 is affirmed, and the CPU 11 proceeds to the process of step S131. On the other hand, if the destination of the vehicle 20 is not set, the determination in step S130 is negated, and the CPU 11 ends the route display process.

[0061] In step S131, the CPU 11 determines whether the destination of the vehicle 20 is inside the disaster occurrence area. As shown in FIG. 5, when the destination of the vehicle 20 is the first point G1 inside the disaster occurrence area, the determination in step S131 is affirmed, and the CPU 11 proceeds to the process of step S132. On the other hand, when the destination of the vehicle 20 is a point outside the disaster occurrence area, the determination in step S131 is negated, and the CPU 11 ends the route display process.

[0062] In step S132, the CPU 11 sets a second point outside the disaster occurrence area as a destination candidate. Then, the CPU 11 proceeds to the process of step S133.

[0063] In step S133, the CPU 11 causes the route to the second point set as the destination candidate to be displayed on the display unit 16. As shown in FIG. 5, the route R2 to the second point G2 is displayed on the first image 60 and the second image 70 together with the route R1 to the destination G1 inside the disaster occurrence area. Then, the CPU 11 ends the route display process.

[0064] (Operation and Effect) As described above, in the information display device 50 according to the present embodiment, disaster information corresponding to the current position of the vehicle 20 is acquired, and a first image showing a map around the vehicle and a second image showing a wide-area map around the vehicle are generated. Then, the information display device 50 displays the first image and the second image side by side on the display unit 16 provided in the vehicle interior according to a predetermined condition.

[0065] Specifically, when the scale of the map of the first image is set to be larger than the scale of the map of the second image according to the user's setting, the information display device 50 displays the first image and the second image side by side on the display unit 16. In this state, as shown in FIG. 4, the map shown in the first image 60 shows a narrower area enlarged compared to the map shown in the second image 70. Therefore, the user can grasp the roads around the vehicle in detail by looking at the first image 60.

[0066] On the other hand, when the scale of the map of the first image is set to be less than or equal to the scale of the map of the second image, the information display device 50 causes only the second image to be displayed on the display unit 16. In this state, since the first image shows the same area as the map shown in the second image, or the first image shows a wider area reduced compared to the map shown in the second image, the two images are integrated and only the second image is displayed.

[0067] In this way, in the information display device 50, when it is determined based on the scale of the map that the first image 60 displays more details around the vehicle than the second image 70, the second image 70 is displayed side by side with the first image 60. Otherwise, the two images are integrated and only the second image 70 is displayed. Thereby, according to the user's settings, the amount of information on the display unit 16 when driving near the disaster-stricken area is optimized.

[0068] Also, in the information display device, when the current position of the vehicle 20 is outside the disaster-stricken area and is separated from the disaster-stricken area by a predetermined distance or more, only the first image is displayed on the display unit. Thereby, for example, when the vehicle is away from the disaster-stricken area and the safety of the user is ensured, the two images are integrated and only the first image is displayed. Thereby, the amount of information on the display unit when driving at a point sufficiently far from the disaster-stricken area is optimized.

[0069] When the destination of the vehicle 20 is set to the first point inside the disaster-stricken area, the information display device 50 sets a second point outside the disaster-stricken area as a new destination candidate. Then, as shown in FIG. 5, the information display device 50 causes the route R2 to the second point G2 to be displayed on the first image 60 and the second image 70. Thereby, for the vehicle 20 heading towards the destination G1 inside the disaster-stricken area X, since the route to the destination candidate G2 outside the disaster-stricken area X can be guided, for the vehicle in the vicinity of the disaster-stricken area, an evacuation route corresponding to the current position of the vehicle can be guided.

[0070] In addition, in the above-described embodiment, the disaster occurrence area X displayed in the second image 70 can be specified based on the satellite image obtained by the artificial satellite 40 photographing the ground. Thereby, even when detailed information regarding the disaster occurrence area cannot be obtained from a public institution, the area based on the disaster information can be viewed from above, and the scale of the disaster occurrence area and the road information around the vehicle can be quickly guided.

[0071] Furthermore, although the information display device 50 is configured to be mounted on the vehicle 20, the present invention is not limited to this. The information display device may be configured by a user terminal separable from the vehicle 20, such as a smartphone or a tablet. In that case, the user terminal is installed and used on the front side inside the vehicle cabin.

[0072] Furthermore, in the above-described embodiment, the image display process and the route display process in which the CPU 11 reads and executes software (program) may be executed by various processors other than the CPU. Examples of the processor in this case include a PLD whose circuit configuration can be changed after manufacturing, such as an FPGA, and a dedicated electric circuit which is a processor having a circuit configuration dedicated to executing specific processing, such as an ASIC. Also, the providing process may be executed by one of these various processors, or may be executed by a combination of two or more processors of the same type or different types (for example, a plurality of FPGAs, and a combination of a CPU and an FPGA, etc.). Also, the hardware structure of these various processors is, more specifically, an electric circuit combining circuit elements such as semiconductor elements.

[0073] Also, although the mode in which the program 14A is pre-stored (installed) in the storage unit 14 has been described, the present invention is not limited to this. The program 14A may be provided in a form recorded on a non-temporary recording medium such as a CD (Compact Disk), a DVD (Digital Versatile Disk), and a USB (Universal Serial Bus) memory. Also, the program 14A may be in a form downloaded from an external device via the network N.

Explanation of Reference Numerals

[0074] 11A Acquisition Unit 11B First Image Generation Unit 11C Second Image Generation Unit 11D Route Proposal Unit 11E Display Control Unit 16 Display Unit 20 Vehicle 40 Artificial Satellite 50 Information Display Device 60 First Image 70 Second Image

Claims

1. An acquisition unit that acquires disaster information corresponding to the current position of the vehicle; A first image generation unit that generates a first image in which the current position of the vehicle is displayed on a narrow-area map showing the vicinity of the vehicle; A second image generation unit that generates a second image in which the entire disaster occurrence area specified from the disaster information and the current position of the vehicle are displayed on a wide-area map showing the vicinity of the vehicle; A display control unit that displays the first image and the second image side by side on a display unit provided in the vehicle interior; having The first image can be changed in the scale of the map of the first image according to the user's setting, The display control unit When the scale of the map of the first image is set larger than the scale of the map of the second image, the first image and the second image are displayed side by side on the display unit, When the scale of the map of the first image is set to be equal to or less than the scale of the map of the second image, only the second image is displayed on the display unit. Information display device.

2. The display control unit displays only the first image on the display unit when the current position of the vehicle is outside the disaster occurrence area and is separated from the disaster occurrence area by a predetermined distance or more. The information display device according to claim 1.

3. Further comprising a route proposal unit that proposes a route from the current position of the vehicle to the destination, When the destination of the vehicle is set to a first point inside the disaster occurrence area, the route proposal unit sets a second point outside the disaster occurrence area as a new destination candidate, The display control unit displays the route to the second point on the first image and the second image. The information display device according to claim 1.

4. The disaster information includes satellite images taken by artificial satellites of the ground, and based on the satellite images, the disaster occurrence area is specified, for the information display device according to claim 1.

Images