JP2017020788A - Navigation device and evacuation support method by navigation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device capable of informing a way to an evacuation place when an emergency due to a natural disaster occurs, and an evacuation support method by the navigation device.SOLUTION: A navigation device 1 placed in a moving body comprises: a map display range calculation part 11 for forming an evacuation map image being a map image including an evacuation place during a natural disaster; a map transmission conversion part 13 for converting the evacuation map image formed in the map display range calculation part 11 into a predetermined image format; and a map transmission part 14 for transmitting the evacuation map image converted by the map transmission conversion part 13 to a portable terminal. The map display range calculation part 11 forms the evacuation map image at a timing urgently indicated.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a navigation device capable of transmitting a map including an evacuation place to a mobile terminal and an evacuation support method using the navigation device when an emergency occurs due to a natural disaster such as a natural disaster.

  Conventionally, a technique for displaying a map including a point designated by a user and transferring the map to an external device has been disclosed (see, for example, Patent Document 1).

  In addition, a technique for transferring a route to a destination, map data around the route, or text information indicating a route to the destination to the mobile phone depending on whether the mobile phone has a GPS function is disclosed. (For example, refer to Patent Document 2).

JP 2006-3664 A JP 2007-333711 A

  When an emergency situation occurs due to a natural disaster such as a natural disaster while boarding a vehicle, and the infrastructure of communication equipment such as a mobile phone is disturbed, it may be necessary to evacuate to a nearby evacuation site away from the vehicle. is expected. In such a case, even if you encounter an emergency on an unknown land, you need to know the way to the evacuation site.

  In Patent Documents 1 and 2, it is assumed that the user knows a place where the user wants to go (that is, the destination is clear). Therefore, the evacuation place is not known in the unknown land and cannot be set as the destination. Even if an evacuation place is set as a destination and a route search to the destination is performed, there is a possibility that the road cannot be followed because the road is cut off. Thus, Patent Documents 1 and 2 do not assume that the road to the evacuation site is notified when an emergency occurs.

  The present invention has been made to solve such a problem, and provides a navigation device capable of notifying a road to an evacuation site when an emergency occurs due to a natural disaster and an evacuation support method using the navigation device. With the goal.

  In order to solve the above problems, a navigation device according to the present invention is a navigation device installed on a mobile body, and generates an evacuation map image that is an evacuation map image that is a map image including an evacuation site in the event of a natural disaster. , An image format conversion unit that converts the evacuation map image generated by the evacuation map image generation unit into a predetermined image format, and a transmission unit that transmits the evacuation map image converted by the image format conversion unit to the portable terminal The evacuation map image generation unit generates an evacuation map image at an emergency instructed timing.

  An evacuation support method using a navigation device according to the present invention is an evacuation support method using a navigation device installed on a moving body, and (a) an evacuation map image that is a map image including an evacuation place in a natural disaster by the navigation device. (B) a step of converting the evacuation map image generated in step (a) by the navigation device into a predetermined image format, and (c) a step of converting the evacuation map image by the navigation device in step (b). And a step of transmitting the evacuation map image to the mobile terminal, wherein the step (a) generates the evacuation map image at a timing instructed by the navigation device.

  According to the present invention, the navigation device is a navigation device installed on a moving body, and an evacuation map image generation unit that generates an evacuation map image that is a map image including an evacuation place in case of a natural disaster, and an evacuation map image generation An evacuation map image comprising: an image format conversion unit that converts the evacuation map image generated by the unit into a predetermined image format; and a transmission unit that transmits the evacuation map image converted by the image format conversion unit to the mobile terminal. Since the generation unit generates the evacuation map image at an emergency instruction timing, it is possible to notify the road to the evacuation site when an emergency occurs due to a natural disaster.

  Further, the evacuation support method using the navigation device is an evacuation support method using the navigation device installed on the moving body, and (a) the navigation device generates an evacuation map image that is a map image including an evacuation place in the event of a natural disaster. A step, (b) a step of converting the evacuation map image generated in step (a) by the navigation device into a predetermined image format, and (c) an evacuation map image converted in step (b) by the navigation device. And transmitting the information to the portable terminal, and in step (a), the evacuation map image is generated at the timing instructed by the navigation device, so that the road to the evacuation site is notified when an emergency occurs due to a natural disaster. It becomes possible.

It is a block diagram which shows an example of a structure of the navigation apparatus by embodiment of this invention. It is a block diagram which shows an example of the hardware constitutions of the navigation apparatus by embodiment of this invention. It is the figure which simplified the control unit by embodiment of this invention. It is a flowchart which shows an example of operation | movement of the navigation apparatus by embodiment of this invention. It is a flowchart which shows another example of operation | movement of the navigation apparatus by embodiment of this invention. It is a flowchart which shows another example of operation | movement of the navigation apparatus by embodiment of this invention. It is a flowchart which shows another example of operation | movement of the navigation apparatus by embodiment of this invention. It is a flowchart which shows another example of operation | movement of the navigation apparatus by embodiment of this invention. It is a block diagram which shows an example of a structure of the navigation system by embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

<Embodiment>
First, the configuration of the navigation device according to the embodiment of the present invention will be described. The navigation device described below is assumed to be a car navigation device mounted on a vehicle (moving body).

  FIG. 1 is a block diagram showing an example of the configuration of the navigation device 1 according to the present embodiment.

  As shown in FIG. 1, the navigation device 1 includes a map data storage unit 2, a current position detection unit 3, a current location area determination unit 4, a route search unit 5, a route storage unit 6, and a communication information acquisition unit 7. An emergency determination unit 8, an evacuation site count unit 9, an evacuation site display number determination unit 10, a map display range calculation unit 11, a transmission map display unit 12, a map transmission conversion unit 13, A map transmission unit 14, a display unit 15, a voice message generation unit 16, a voice guidance unit 17, an input unit 18, and a control unit 19 are provided.

  FIG. 2 is a block diagram illustrating an example of a hardware configuration corresponding to each function of the navigation device 1 illustrated in FIG. 1.

  As shown in FIG. 2, the navigation device 1 includes a map data storage device 20, a communication information receiver 21, a GPS receiver 22, a display device 23, an audio output device 24, a map transmission device 25, and an input. A device 26 and a control unit 27 are provided. The control unit 27 includes a central processing unit (CPU) 28, a read only memory (ROM) 29, a random access memory (RAM) 30, a display control unit 31, and an input / output (I / O) 32. ing.

  The map data storage unit 2 stores map data including evacuation sites at times of disaster. The map data storage unit 2 corresponds to the map data storage device 20. The map data is digitized map data such as link data and node data. The map data may be stored in advance in the map data storage unit 2 or may be acquired from the outside. When the map data storage unit 2 acquires map data from the outside, it is necessary to acquire map data every predetermined period so as to always hold map data around the current position of the vehicle.

  The current position detection unit 3 detects the current position of the vehicle. Specifically, the CPU 28 implements the function of the current position detection unit 3 by reading and executing a program related to detection of the current position stored in the ROM 29. Under the control of the current position detection unit 3, the GPS receiver 22 acquires information indicating the current position of the vehicle from an artificial satellite.

  The current location area determination unit 4 determines an area of the current position of the vehicle based on the current position detected by the current position detection unit 3. Specifically, the CPU 28 implements the function of the current location area determination unit 4 by reading and executing a program for determining the current position area stored in the ROM 29.

  The route search unit 5 is based on the current position of the vehicle detected by the current position detection unit 3, the map data stored in the map data storage unit 2, and the destination set by the user via the input unit 18. Search the route from the current position to the destination. Specifically, the CPU 28 implements the function of the route search unit 5 by reading and executing a program related to the route search stored in the ROM 29. The route storage unit 6 stores the route searched by the route search unit 5. The path storage unit 6 may be, for example, the RAM 30 or another storage device (not shown).

  The communication information acquisition unit 7 performs control for acquiring various information including information indicating an emergency from the outside by communicating with the outside. Specifically, the CPU 28 implements the function of the communication information acquisition unit 7 by reading and executing a program for acquiring information from the outside stored in the ROM 29. Under the control of the communication information acquisition unit 7, the communication information receiver 21 acquires various information including information indicating an emergency from the outside. Here, as the communication information receiver 21, for example, a communication device such as a mobile phone or a smartphone, a TMC (Traffic Message Channel) receiver, a VICS (Vehicle Information and Communication System, registered trademark) receiver, a DSRC (Dedicated Short Range). Communication, registered trademark) receiver and the like.

  The emergency determination unit 8 determines whether the information acquired by the communication information acquisition unit 7 includes information indicating an emergency. Specifically, the CPU 28 reads out and executes a program for determining whether or not the information acquired from the outside stored in the ROM 29 includes information indicating an emergency, thereby executing the emergency determination unit 8. Realize the function. Here, as information indicating an emergency situation, for example, a signal notifying an emergency state as traffic information can be cited, for example, a signal indicating that the seismic intensity is greater than or equal to a predetermined seismic intensity, or a tsunami exceeding a predetermined height is expected. And a signal indicating that an evacuation is necessary, such as a signal indicating that a wildfire has occurred, a signal indicating that an avalanche has occurred, and the like.

  The evacuation site number counting unit 9 counts the number of evacuation sites existing in a specific area. Specifically, the CPU 28 implements the function of the evacuation site number counting unit 9 by reading and executing a program for counting the number of evacuation sites existing in a specific area stored in the ROM 29.

  The evacuation site display number determination unit 10 determines whether or not the designated number of evacuation sites are included in the map displayed by the transmission map display unit 12. Specifically, the CPU 28 reads and executes a program stored in the ROM 29 for determining whether or not a specified number of evacuation sites are included in the map displayed by the transmission map display unit 12. Thus, the function of the evacuation site display number determination unit 10 is realized.

  The map display range calculation unit 11 calculates the display range of the map displayed by the transmission map display unit 12. Specifically, the CPU 28 reads out and executes a program for calculating the display range of the map displayed by the transmission map display unit 12, which is stored in the ROM 29, thereby executing the function of the map display range calculation unit 11. Is realized. That is, the map display range calculation unit 11 has a function as an evacuation map image generation unit that generates a map (evacuation map image) including an evacuation place at a time of natural disaster.

  The transmission map display unit 12 (evacuation map image display unit) controls display of a map in the display range calculated by the map display range calculation unit 11. Specifically, the CPU 28 reads out and executes a program for controlling the display of the map in the display range calculated by the map display range calculation unit 11, stored in the ROM 29, thereby executing the transmission map display unit 12. Realize the function. Here, the transmission map display unit 12 corresponds to the display control unit 31. The display control unit 31 controls the display device 23 to display a map of the display range calculated by the map display range calculation unit 11. The display device 23 is composed of a liquid crystal display or the like and displays various information.

  The map transmission conversion unit 13 (image format conversion unit) converts the map displayed on the display device 23 under the control of the transmission map display unit 12 into a format that can be displayed on the mobile terminal. Specifically, the CPU 28 implements the function of the map transmission conversion unit 13 by reading and executing a program stored in the ROM 29 for conversion into a format for transmission to a portable terminal. Here, the format that can be displayed on the mobile terminal is displayed even if the mobile terminal does not have a dedicated application for displaying a map, such as PDF (Portable Document Format) or GIF (Graphics Interchange Format). A possible format.

  The map transmission part 14 (transmission part) performs control which transmits the map converted by the map transmission conversion part 13 to a portable terminal. Specifically, the CPU 28 implements the function of the map transmission unit 14 by reading and executing a program stored in the ROM 29 for transmitting the map converted by the map transmission conversion unit 13 to the mobile terminal. To do. Under the control of the map transmission unit 14, the map transmission device 25 transmits the map converted by the map transmission conversion unit 13 to the mobile terminal. The map transmission device 25 is an interface capable of communicating with an external device such as Bluetooth (registered trademark), infrared, USB stick, SD card (registered trademark), or communication cable.

  When the display unit 15 displays a map including an evacuation place on the display device 23, the display unit 15 controls display of an input method or a telop of characters or characters that call the user attention. Specifically, the CPU 28 implements the function of the display unit 15 by reading and executing a program for controlling the display stored in the ROM 29. Here, the display unit 15 corresponds to the display control unit 31. The display control unit 31 controls the display device 23 to display an input method or an image or a text telop that prompts the user to pay attention. Data for generating an input method or an image or a text telop for alerting the user may be stored in the display unit 15 or stored in the map data storage unit 2. , 2 may be stored in a storage unit (not shown). The storage unit may be provided in the navigation device 1 or may be provided outside the navigation device 1. The display device 23 may include a touch panel. In this case, the display device 23 has a function as an input device.

  The voice message generation unit 16 generates a voice message that prompts the user for an input method or attention. Specifically, the CPU 28 implements the function of the voice message generation unit 16 by reading and executing a program for generating a voice message stored in the ROM 29. Note that the data for generating the voice message may be held by the voice message generation unit 16, stored in the map data storage unit 2, or stored in a storage unit (not shown in FIGS. 1 and 2). Good. The storage unit may be provided in the navigation device 1 or may be provided outside the navigation device 1.

  The voice guidance unit 17 controls guidance (output) of the voice message generated by the voice message generation unit 16. Specifically, the CPU 28 implements the function of the voice guidance unit 17 by reading and executing a program for guiding a voice message stored in the ROM 29. The voice message generated by the voice message generator 16 is output from the voice output device 24 via the I / O 32 under the control of the voice guide unit 17. The audio output device 24 includes a speaker or the like.

  The input unit 18 receives user input. Specifically, the CPU 28 implements the function of the input unit 18 by reading and executing a program for receiving user input stored in the ROM 29. Under the control of the input unit 18, a signal input by the user from the input device 26 is output to the control unit 19 via the I / O 32. The input device 26 includes, for example, a keyboard, a touch pad, a touch panel, a jog operation device, a remote controller, a voice input device, and the like.

  The control unit 19 controls the entire navigation device 1. Here, the control unit 19 corresponds to the control unit 27. In the control unit 27, the CPU 28 executes a program stored in the ROM 29, so that the current position detection unit 3, current location area determination unit 4, route search unit 5, communication information acquisition unit 7, emergency situation determination unit 8, evacuation Location count unit 9, evacuation site display number determination unit 10, map display range calculation unit 11, transmission map display unit 12, map transmission conversion unit 13, map transmission unit 14, display unit 15, voice message generation unit 16, The functions of the voice guidance unit 17 and the input unit 18 are realized. The ROM 29 stores program constants and the like used by the CPU 28 in the process of operation (process of executing a program). The RAM 30 develops a program, map data, or the like, or a calculation result is written in the process in which the CPU 28 operates. The display control unit 31 controls display on the display device 23. The I / O 32 is an interface between the control unit 27, the communication information receiver 21, the GPS receiver 22, the display device 23, the sound output device 24, the map transmission device 25, and the input device 26.

  FIG. 3 is a simplified diagram of the control unit 27. In FIG. 3, the processor 33 corresponds to the CPU 28, and the memory 34 corresponds to the ROM 29 and the RAM 30.

  Current position detection unit 3, current location area determination unit 4, route search unit 5, communication information acquisition unit 7, emergency situation determination unit 8, evacuation site count unit 9, evacuation site display number determination unit 10, map display in navigation device 1 Each function of the range calculation unit 11, the transmission map display unit 12, the map transmission conversion unit 13, the map transmission unit 14, the display unit 15, the voice message generation unit 16, the voice guidance unit 17, and the input unit 18 is a processing circuit. It is realized by. That is, the navigation device 1 detects the current position, determines the area of the current position, searches for a route, acquires information from the outside, and whether the information acquired from the outside includes information indicating an emergency situation. And count the number of evacuation sites existing in a specific area, determine whether or not the designated number of evacuation sites are included in the map displayed by the transmission map display unit 12, Calculating the display range of the map displayed by the map display unit 12 for transmission, controlling the display of the map of the display range calculated by the map display range calculation unit 11, and converting it to a format for transmission to the mobile terminal; A processing circuit is provided for controlling the transmission of the map to the mobile terminal, controlling the display, generating the voice message, controlling the guidance of the voice message, and controlling the input. The processing circuit is a processor 33 (also referred to as a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP (Digital Signal Processor)) that executes a program stored in the memory 34.

  Current position detection unit 3, current location area determination unit 4, route search unit 5, communication information acquisition unit 7, emergency situation determination unit 8, evacuation site count unit 9, evacuation site display number determination unit 10, map display in navigation device 1 The functions of the range calculation unit 11, the transmission map display unit 12, the map transmission conversion unit 13, the map transmission unit 14, the display unit 15, the voice message generation unit 16, the voice guidance unit 17, and the input unit 18 are software, It is realized by firmware or a combination of software and firmware. Software or firmware is described as a program and stored in the memory 34. The processing circuit reads out and executes the program stored in the memory 34, thereby realizing the function of each unit. That is, the navigation device 1 includes a step of detecting the current position, a step of determining the area of the current position, a step of searching for a route, a step of acquiring information from the outside, and information indicating an emergency situation from the information acquired from the outside. A step of determining whether or not the number of evacuation sites existing in a specific area is counted, and whether or not a designated number of evacuation sites are included in the map displayed by the transmission map display unit 12 A step of determining whether or not, a step of calculating a display range of the map displayed by the transmission map display unit 12, a step of controlling display of the map of the display range calculated by the map display range calculation unit 11, and a portable terminal Converting to a format for transmission, controlling to send the map to the mobile device, controlling the display, sound Comprising the step of generating a message, controlling the guidance of the voice message, the memory 34 for storing a program controlling the input is to be performed consequently. These programs include a current position detection unit 3, a current location area determination unit 4, a route search unit 5, a communication information acquisition unit 7, an emergency situation determination unit 8, an evacuation site number counting unit 9, and an evacuation site display number determination unit 10. Procedure or method of map display range calculation unit 11, transmission map display unit 12, map transmission conversion unit 13, map transmission unit 14, display unit 15, voice message generation unit 16, voice guidance unit 17, and input unit 18 It can be said that it is what makes a computer execute. Here, the memory is, for example, a nonvolatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), magnetic disk, or flexible disk. , Optical disc, compact disc, mini disc, DVD (Digital Versatile Disk), and the like.

  Next, the operation of the navigation device 1 will be described. The navigation device 1 may or may not be searching for a route using the route search unit 5.

  FIG. 4 is a flowchart showing an example of the operation of the navigation device 1.

  In step S101, when the emergency determination unit 8 determines that the information acquired from the outside by the communication information acquisition unit 7 includes information indicating an emergency, the display unit 15 displays the map including the evacuation site as a portable terminal. The display device 23 is controlled so as to display an evacuation button (a button for giving an emergency instruction) for starting a process to be transmitted to. By this control, an evacuation button is displayed on the display device 23. The user presses (emergency instruction) the evacuation button displayed on the display device 23.

  In step S102, the transmission map display unit 12 controls the display device 23 to display a map including the evacuation site. With this control, a map including the evacuation site is displayed on the display device 23. Normally (when the evacuation button is not pressed), the map displayed on the display device 23 does not include an evacuation site.

  In step S103, the map transmission conversion unit 13 converts the map including the evacuation site displayed on the display device 23 into a format that can be displayed on the mobile communication terminal. Note that the format to be converted by the map transmission conversion unit 13 may be a predetermined format. For example, when displaying a map including an evacuation place on the display device 23, a plurality of format options are also displayed and displayed by the user. You may make it select. In addition, when the user selects a format to be converted, the user may arbitrarily select a predetermined format (in this case, for example, the user can select an OK button without selecting anything). Or the like, the map is converted into a map of a predetermined format), or the user may arbitrarily select the format in a non-selected state (in this case, the map is not selected unless the user selects any format). The format may not be converted, or the map may be converted into a predetermined format when the user presses an OK button or the like without selecting anything). After the map transmission conversion unit 13 converts the map format, the map transmission unit 14 controls the map transmission device 25 to transmit the map after the format conversion to the portable terminal. With this control, the map transmission device 25 transmits a map to the mobile terminal.

  As described above, since the evacuation place that is not usually required is not included in the map displayed on the display device 23 and a map including the evacuation place is displayed on the display device 23 only in an emergency situation, the user can comfortably use the navigation device 1. An environment to be used can be provided. Moreover, in the case of an emergency, it is assumed that the communication function of the navigation device 1 and the mobile terminal cannot be exhibited. Even in such a case, a map including an evacuation place is sent from the navigation device 1 to the mobile terminal. It can be transmitted reliably.

  In addition, although step S101 demonstrated the case where the communication information acquisition part 7 displayed the evacuation button automatically, if the information which shows an emergency from the outside was acquired, it was not restricted to this. For example, the evacuation button is always displayed on the menu screen of the display device 23 (always displayed at a predetermined position on the screen) so that the user can select the evacuation button, and the user presses the evacuation button at an arbitrary timing. You may do it. Also, based on the video taken by the camera mounted on the vehicle, it is judged whether or not the vehicle is in an emergency situation (including a situation where the vehicle cannot travel), and an evacuation button is displayed in the case of an emergency situation You may make it do. The evacuation button is at least one of a screen of the navigation device 1 (that is, a screen of the display device 23), a screen (not shown) provided in the meter panel, or a displayable area such as a windshield. May be displayed.

  Even when the user is placed under unusual circumstances, such as in an emergency situation, the user can display the necessary map (map including the evacuation site) with few steps by automatically displaying the evacuation button. You can get it and you can evacuate quickly.

  The transmission map display unit 12 collects a plurality of patterns such as a scale indicating a detailed road for a pedestrian and a scale indicating a distant place for a map (a map including an evacuation place) to be transmitted to a mobile terminal. It may be generated as a transmission set. The transmission set may be a single connected map, or may be divided into a size convenient for a format such as PDF or GIF, and may be a map that covers a plurality of pages. If the transmission set is a single connected map, it can be enlarged or reduced. If the transmission set is a map having a plurality of scales at the same point, there is no special viewer. It is possible to view a map that is freely enlarged or reduced. Such an operation can also be performed by the transmission map display unit 12. The user can freely use the map by carrying the transmission set, and can proceed while grasping the way to the evacuation site. In addition, even if the map containing multiple evacuation sites is sent to the mobile terminal and the road is cut off, it is not possible to go to the evacuation site that was decided first. It becomes possible to go to other evacuation sites.

<Modification>
Next, modified examples (modified examples 1 to 4) of the operation of the navigation device 1 will be described.

<Modification 1>
FIG. 5 is a flowchart illustrating an example of the operation of the navigation device 1 according to the first modification. Note that steps S201 and S207 in FIG. 5 correspond to steps S101 and S103 in FIG.

  In step S202, when the user presses the evacuation button in step S201, the display unit 15 displays an input screen for allowing the user to input a map display range (geographic range) to be displayed on the display device 23. Control. With this control, an input screen is displayed on the display device 23. The user inputs an arbitrary display range on the input screen displayed on the display device 23. Note that the user inputs a distance around the current position as a display range.

  In step S203, the evacuation site count unit 9 determines whether the evacuation site is included in the display range input by the user in step S202. Specifically, the evacuation site number counting unit 9 includes the current position detected by the current position detection unit 3, the map data stored in the map data storage unit 2, and the display range input by the user in step S202. Based on this, it is determined whether or not the evacuation site is included in the display range. That is, the evacuation site count unit 9 determines whether or not at least one evacuation site is included in the display range. When the evacuation place is not included in the display range, the process proceeds to step S204. On the other hand, when the evacuation place is included in the display range, the process proceeds to step S206.

  In step S204, the map display range calculation unit 11 calculates a display range including an evacuation place. Specifically, the map display range calculation unit 11 determines the nearest evacuation place from the current position based on the current position detected by the current position detection unit 3 and the map data stored in the map data storage unit 2. Search from the map data and calculate the distance between the searched evacuation site and the current position. That is, the map display range calculation unit 11 calculates the distance from the current position to the nearest evacuation site as the display range.

  In step S205, the display unit 15 performs control to display the display range calculated by the map display range calculation unit 11 in step S204 using a telop or the like. By the control, a telop or the like is displayed on the display device 23 as a minimum display range necessary for including at least one evacuation site. Note that the telop for notifying the display range is a screen of the navigation device 1 (that is, the screen of the display device 23), a screen (not shown) provided in the meter panel, or a displayable area such as a windshield. You may make it display on at least 1 or more of them.

  The voice guidance unit 17 controls guidance of the voice message generated by the voice message generation unit 16. With this control, the voice output device 24 outputs a voice message notifying the minimum display range necessary for including at least one evacuation site.

  The notification of the minimum display range necessary for including at least one evacuation site may be either display or sound, or both display and sound.

  In step S206, the map display range calculation unit 11 calculates the display range of the map displayed on the display device 23, including the display range input by the user in step S202. Then, the transmission map display unit 12 performs control to display a map of the display range calculated by the map display range calculation unit 11. With this control, the display device 23 displays a map of the display range input by the user in step S202.

  As described above, a map including an evacuation place within a range desired by the user can be transmitted to the mobile terminal. If it is determined in step S203 that the evacuation place is not included in the display range, the user can input (reset) the display range again in step S202, so that the user can set the minimum display range. The display range can be input again after grasping.

  When it is determined in step S203 that the evacuation place is not included in the display range, the user inputs the display range again in step S202. However, the present invention is not limited to this. For example, after the minimum display range necessary for including at least one evacuation site is calculated and notified, the user may be allowed to input the display range. That is, you may make it perform the process of step S204 and step S205 between step S201 and step S202.

<Modification 2>
FIG. 6 is a flowchart showing an example of the operation of the navigation device 1 according to the second modification. Note that steps S301 and S305 in FIG. 6 correspond to steps S101 and S103 in FIG.

  In step S302, the current location area determination unit 4 determines whether or not the current position where the vehicle exists is in the city. Specifically, the current location area determination unit 4 determines whether or not the current position where the vehicle exists is a city based on the current position detected by the current position detection unit 3. Here, whether or not it is a city is determined based on the population or population density of each area, information specifying the city, mountainous area, coastal area, etc., municipal divisions, school districts, etc. These information may be included in the map data. If the current position is a city, the process proceeds to step S303. On the other hand, if the current position is not a city, the process proceeds to step S304.

  In step S303, the map display range calculation unit 11 calculates a predetermined narrow display range including the evacuation place. At this time, the map display range calculation unit 11 determines whether or not at least one evacuation site is included in the display range based on the result of the evacuation site number counting unit 9 counting the number of evacuation sites. . Note that the predetermined narrow display range is a narrow range such as 2 km, for example. Then, the transmission map display unit 12 performs control to display a map of the display range calculated by the map display range calculation unit 11. With this control, the display device 23 displays a map of the display range calculated by the map display range calculation unit 11.

  In step S304, the map display range calculation unit 11 calculates a predetermined wide display range including the evacuation place. At this time, the map display range calculation unit 11 determines whether or not at least one evacuation site is included in the display range based on the result of the evacuation site number counting unit 9 counting the number of evacuation sites. . The predetermined wide display range is a wide range such as 10 km. Then, the transmission map display unit 12 performs control to display a map of the display range calculated by the map display range calculation unit 11. With this control, the display device 23 displays a map of the display range calculated by the map display range calculation unit 11.

  As described above, since there are a plurality of evacuation sites in a narrow area in the city, the user's request can be satisfied by transmitting a map of the narrow area to the mobile terminal. Further, by narrowing the map range, map information of an unnecessary area is not included in the map, and can be transmitted to the mobile terminal in a short time. On the other hand, in mountainous areas or coastal areas, since the number of evacuation places is limited, a user's request can be satisfied by transmitting a wide range of maps to the mobile terminal. That is, the map display range calculation unit 11 varies the geographical range of the map according to the region. Thus, since a map corresponding to the area of the current position is transmitted to the mobile terminal, it is possible to provide a map useful for the user.

  In the above, the city may be divided into a plurality of stages. Such information may be included in the map data.

  In the above description, determination may be made for each type of area, such as a residential area or a factory area, without being limited to a city.

<Modification 3>
FIG. 7 is a flowchart illustrating an example of the operation of the navigation device 1 according to the third modification. Note that steps S401 and S404 in FIG. 7 correspond to steps S101 and S103 in FIG.

  In step S402, when the user presses the evacuation button in step S401, the display unit 15 controls to display an input screen for allowing the user to input the number of evacuation sites to be included in the map displayed on the display device 23. . With this control, an input screen is displayed on the display device 23. The user inputs the number of arbitrary evacuation sites on the input screen displayed on the display device 23.

  In step S403, the map display range calculation unit 11 calculates a display range including the number of evacuation places input in step S402. Specifically, the evacuation site display number determination unit 10 receives information on the number of evacuation sites input in step S402. Then, based on the current position detected by the current position detection unit 3, the evacuation place display number determination unit 10 searches the map data for the number of evacuation places input in step S402 in ascending order from the current position. At this time, the evacuation site display number determination unit 10 may search the evacuation site from the map data in the order of the shortest distance from the current position to the evacuation site, and the route from the current location searched by the route search unit 5 is the shortest. You may search from map data in order from the evacuation site. The map display range calculation unit 11 calculates a display range including the evacuation sites searched by the evacuation site display number determination unit 10. Then, the transmission map display unit 12 performs control to display a map of the display range calculated by the map display range calculation unit 11. With this control, the display device 23 displays a map of the display range calculated by the map display range calculation unit 11.

  There is no problem if the evacuation site close to the current location is functioning or if the road to the evacuation site is not broken, but in an emergency situation the evacuation site or road condition is unknown, so there are no evacuation site candidates. It is considered that there are more users for the user. According to the above, by allowing the user to input the number of evacuation sites, the user can grasp the range of the input evacuation sites (where the evacuation sites are located).

  In step S402, an upper limit of the number of evacuation sites that can be input by the user may be provided, or an upper limit may not be provided. When an upper limit is set for the number of evacuation sites, the number of evacuation sites is given to the user after the user presses the evacuation button in step S401 and before the user inputs the number of evacuation sites in step S402. The display unit 15 may display a notification indicating that an upper limit is provided, or the voice guidance unit 17 may provide voice guidance. The notification that the upper limit is set for the number of evacuation sites may be either display or sound, or may be both display and sound. When displaying a notification that an upper limit is set for the number of evacuation sites, a screen of the navigation device 1 (screen of the display device 23), a screen (not shown) provided in the meter panel, a windshield, or the like It may be displayed in at least one of the displayable areas.

  When there are a plurality of evacuation sites that are the maximum value input in step S402 (a plurality of evacuation sites exist at the same distance from the current position, and if all of these evacuation sites are adopted, the number input in step S402 If the number of evacuation sites exceeds the number input in step S402, the evacuation sites may be displayed. In this case, since the distance from the current position to the farthest evacuation site is the same for the user, the display unit 15 displays a notification that the evacuation sites exceeding the input number are displayed, or voice guidance The unit 17 may provide voice guidance. The notification indicating that the evacuation places exceeding the input number are displayed may be either display or sound, and may be both display and sound. When displaying a notification indicating that the number of evacuation places exceeding the input number is displayed, the screen of the navigation device 1 (screen of the display device 23), the screen provided in the meter panel (not shown), or You may make it display on at least 1 or more of displayable areas, such as a windshield.

  In addition, when there are a plurality of evacuation sites having the maximum value input in step S402, based on a predetermined order (for example, the order in which the information on the evacuation sites is stored in the map data), step S402 is performed. You may make it display the number of evacuation places input in (4).

<Modification 4>
FIG. 8 is a flowchart illustrating an example of the operation of the navigation device 1 according to the fourth modification. Note that steps S501 and S510 in FIG. 8 correspond to steps S101 and S103 in FIG.

  In step S <b> 502, the evacuation site number counting unit 9 acquires the number of evacuation sites to be displayed on the display device 23 at the minimum. Note that the number of evacuation sites to be displayed at a minimum may be determined in advance, or may be set by the user using the input unit 18 after pressing the evacuation button in step S501. It may be set by the user. When the user sets the number of evacuation places using the input unit 18 after pressing the evacuation button in step S501, the process of step S502 is a process in which the user inputs the number of evacuation places. In this case, an initial value may be set in advance. In addition, when the user sets the number of evacuation sites at an arbitrary timing, the process of step S502 is a process of acquiring an evacuation site.

  In step S503, the evacuation site number counting unit 9 determines whether or not the number of evacuation sites acquired in step S502 is included in a predetermined range. Here, the predetermined range is, for example, when the number of evacuation sites acquired in step S502 is included in a predetermined range from the current position, the process proceeds to step S505. On the other hand, if the number of evacuation sites acquired in step S502 is not included in the predetermined range, the process proceeds to step S504.

  In step S504, the map display range calculation unit 11 calculates the display range so as to include the number of evacuation sites acquired in step S502 by performing the same process as in step S403 of FIG. That is, the map display range calculation unit 11 expands a predetermined range so as to include the number of evacuation sites acquired in step S502. By performing the processing in step S504, at least the number of evacuation sites acquired in step S502 is included in the predetermined range.

  In step S505, the display unit 15 controls to display an input screen for allowing the user to input the number of evacuation sites to be included in the map displayed on the display device 23. With this control, an input screen is displayed on the display device 23. The user inputs the number of arbitrary evacuation sites on the input screen displayed on the display device 23.

  In step S506, the evacuation site number counting unit 9 acquires the number of evacuation sites included in a predetermined range.

  In step S507, the evacuation site display number determination unit 10 determines whether or not the number of evacuation sites acquired in step S506 is equal to or greater than the number of evacuation sites input in step S505. If the number of evacuation sites acquired in step S506 is equal to or greater than the number of evacuation sites input in step S505, the process proceeds to step S508. On the other hand, if the number of evacuation sites acquired in step S506 is not greater than or equal to the number of evacuation sites input in step S505, the process proceeds to step S509.

  In step S508, the map display range calculation unit 11 calculates a display range including the number of evacuation places input in step S505 by performing the same processing as in step S403 of FIG. The display device 23 displays a map including the number of evacuation sites input in step S505.

  In step S509, the map display range calculation unit 11 calculates a display range including the number of evacuation sites acquired in step S506 by performing the same process as in step S403 of FIG. The display device 23 displays a map including the number of evacuation sites acquired in step S506. At this time, the display unit 15 displays a notification to the user that if the number of evacuation places input by the user is displayed, the display unit 15 exceeds the displayable range (the predetermined range described above), or the voice guidance unit 17 may provide voice guidance. The notification that the displayable range is exceeded when the number of evacuation sites input by the user is displayed may be either display or sound, or may be both display and sound. When displaying a notification indicating that the number of evacuation places entered by the user exceeds the displayable range, the screen of the navigation device 1 (screen of the display device 23), the screen provided in the meter panel ( (Not shown) or at least one of displayable areas such as a windshield.

  As described above, in order not to display a map in a wider range than a predetermined range, a large amount of map data is not required, and the time for transmission to the mobile terminal can be shortened. This allows the user to blame as soon as possible.

  The navigation device described above is not only a vehicle navigation device, that is, a car navigation device, but also a PND (Portable Navigation Device) and a mobile communication terminal (for example, a mobile phone, a smartphone, a tablet terminal, etc.) that can be mounted on a vehicle, In addition, the present invention can also be applied to a navigation apparatus constructed as a system by appropriately combining servers and the like or an apparatus other than the navigation apparatus. In this case, each function or each component of the navigation device is distributed and arranged in each function for constructing the system.

  Specifically, as an example, the function of the navigation device can be arranged in a server. For example, as shown in FIG. 9, the mobile communication terminal 36 includes the communication information acquisition unit 7 and the emergency determination unit 8 shown in FIG. 1, and the navigation device 35 has a map data storage unit 2, a current position detection unit 3, a current location area. Judgment unit 4, route search unit 5, route storage unit 6, evacuation site number counting unit 9, evacuation site display number judgment unit 10, map display range calculation unit 11, transmission map display unit 12, map transmission conversion unit 13, The map transmission unit 14, the display unit 15, the voice message generation unit 16, the voice guidance unit 17, the input unit 18, and the control unit 19 are provided, and the navigation device 35 and the mobile communication terminal 36 are each provided with a communication unit 37 and a communication unit 38. Thus, a navigation system can be constructed. Here, the navigation device 35 and the portable communication terminal 36 are communicably connected by a communication unit 37 and a communication unit 38. Each component provided in the navigation device 35 may be appropriately distributed and arranged in the mobile communication terminal 36.

  Even if it is a case where it is said structure, the effect similar to said embodiment is acquired.

  Further, software (an evacuation support method using a navigation device) that executes the operation in the above-described embodiment may be incorporated in, for example, a mobile communication terminal.

  Specifically, as an example, the evacuation support method using the navigation device described above is an evacuation support method using a navigation device installed on a moving body, and (a) a map image including an evacuation place at a time of natural disaster by the navigation device. (B) a step of converting the evacuation map image generated in step (a) by the navigation device into a predetermined image format, and (c) a step (b) of the navigation device. And a step of transmitting the evacuation map image converted in step) to the mobile terminal, and the step (a) is characterized in that the evacuation map image is generated at a timing when an emergency instruction is given to the navigation device.

  As described above, the same effects as those of the above-described embodiment can be obtained by operating the software that executes the operation of the above-described embodiment in a portable communication terminal.

  In the present invention, the embodiments can be appropriately modified and omitted within the scope of the invention.

  1 navigation device, 2 map data storage unit, 3 current position detection unit, 4 current location area determination unit, 5 route search unit, 6 route storage unit, 7 communication information acquisition unit, 8 emergency determination unit, 9 evacuation site count unit 10 evacuation site display number determination unit, 11 map display range calculation unit, 12 transmission map display unit, 13 map transmission conversion unit, 14 map transmission unit, 15 display unit, 16 voice message generation unit, 17 voice guidance unit, 18 input unit, 19 control unit, 20 map data storage device, 21 communication information receiver, 22 GPS receiver, 23 display device, 24 voice output device, 25 map transmission device, 26 input device, 27 control unit, 28 CPU, 29 ROM, 30 RAM, 31 Display controller, 32 I / O, 33 Processor, 34 Memory, 35 Navigation Device, 36 mobile communication terminal, 37,38 communication unit.

Claims (15)

A navigation device installed on a moving body,
An evacuation map image generation unit for generating an evacuation map image, which is a map image including an evacuation place in a natural disaster;
An image format conversion unit that converts the evacuation map image generated by the evacuation map image generation unit into a predetermined image format;
A transmission unit that transmits the evacuation map image converted by the image format conversion unit to a mobile terminal;
With
The navigation apparatus according to claim 1, wherein the evacuation map image generation unit generates the evacuation map image at an emergency instruction timing.   The navigation apparatus according to claim 1, further comprising an evacuation map image display unit that displays the evacuation map image generated by the evacuation map image generation unit.   The navigation apparatus according to claim 1, wherein a geographical range of the evacuation map image can be set by a user. In the case where the evacuation site is not included in the geographical range set by the user,
The navigation apparatus according to claim 3, wherein the evacuation map image generation unit calculates the geographical range including at least one evacuation place.   The navigation device according to claim 4, wherein the evacuation map image generation unit generates the evacuation map image in the geographical range reset by the user after the calculation.   The navigation device according to claim 1, wherein the evacuation map image generation unit varies a geographical range of the evacuation map image according to a region.   The navigation device according to claim 1 or 2, wherein the number of the evacuation sites included in the evacuation map image can be set by a user at the timing of the emergency instruction.   The navigation device according to claim 1 or 2, wherein the number of the evacuation places included in the evacuation map image is set in advance.   The evacuation map image generation unit generates the evacuation map image including the predetermined minimum number of the evacuation locations when the number of the set evacuation locations is larger than a predetermined minimum number. The navigation device according to claim 7 or 8, characterized by the above.   The navigation apparatus according to claim 9, wherein the predetermined minimum number is settable by a user.   The navigation device according to claim 2, wherein the evacuation map image display unit displays a button for the emergency instruction.   The navigation device according to claim 11, wherein the evacuation map image display unit always displays the button. It further includes a communication information acquisition unit that acquires information by communication from the outside,
The navigation device according to claim 11, wherein the evacuation map image display unit displays the button when the communication information acquisition unit acquires the information indicating the natural disaster.   The navigation device according to any one of claims 1 to 13, wherein the transmission unit transmits a plurality of the evacuation map images of different scales. An evacuation support method using a navigation device installed on a moving body,
(A) generating an evacuation map image that is a map image including an evacuation site at a time of natural disaster by the navigation device;
(B) converting the evacuation map image generated in the step (a) by the navigation device into a predetermined image format;
(C) transmitting the evacuation map image converted in the step (b) by the navigation device to a mobile terminal;
With
In the step (a), the evacuation map image is generated at a timing instructed by the navigation device in an emergency, and the evacuation support method by the navigation device is characterized.

Images