JP2008039676A - Navigation device and displaying method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for a navigation device capable of displaying weather condition information in an effective range of the periphery of destination to allow a user to check the weather condition information of the destination in advance, and of presenting a candidate of an alternative destination to a user when weather of the destination does not meet requirements of a user. <P>SOLUTION: A navigation device acquires weather condition information at an arbitrary time from external servers and other vehicles, indicates an effective range in a map that is displayed in the display device, and then overlaps and displays the weather condition information. Also, a user specifies the destination from a map or destination data according to categories, and the weather condition requirements that a user desires. When the weather condition of the specified destination at an estimated arrival time is not a desired condition of a user, the candidate of the alternative destination is extracted to present based on requirements, such as a category of a destination, a distance from a vehicle location to the alternative destination, etc. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a navigation device and a display method thereof, and more particularly to a navigation device suitable for use in navigation for guiding to a destination in consideration of weather conditions, and a display method thereof.

  The navigation device searches and presents a plurality of routes to the destination input by the user, and when a user-desired route is selected from the presented plurality of routes, the navigation direction is based on the route. Has a guidance function to guide you.

  When the user sets a destination in the navigation device, the user selects the destination by using a destination list configured according to genre or designates a position on the electronic map. After specifying the destination, it is common to calculate and present a plurality of routes by considering statistical traffic jam information, road type, and the like.

  However, in the route search method as described above, priority is given to lowering the fee or arriving at the destination early, and there is a function of recommending another route depending on the weather such as snowfall or rain. There may not be.

  Regarding navigation in consideration of weather information, the following Patent Document 1 discloses a method for performing a route search by fetching weather information.

  Patent Document 2 below describes a method of acquiring weather information by a communication unit attached to a vehicle or the like, and displaying the weather information at a predicted arrival time at a destination superimposed on a map of a display unit. Yes.

JP 2003-294470 A JP 2000-258174 A

  However, in the technique of Patent Document 1, a route that takes into account the weather on the route is presented, but the weather at the destination is not considered at the time of setting the destination. Therefore, for example, when the weather at a destination is important, such as an amusement park, leisure facility, sea, mountain, etc., there is a problem that the weather at the site is not known unless the destination is reached.

  In the technique of Patent Document 2, weather information at the expected arrival time of the destination can be known. However, when the destination is in an undesired weather, a candidate for substituting for the destination is not recommended. The user must re-examine alternative destinations. Further, a mesh is assumed as a unit for mapping weather data, and weather information is not necessarily displayed by indicating an effective range for a destination.

  The present invention has been made to solve the above-mentioned problems, and its purpose is to display weather information on an effective range around the destination on the display device of the navigation device and confirm the weather at the destination in advance. Therefore, it is an object of the present invention to provide a navigation device capable of presenting alternative destination candidates when the weather at the destination does not meet the desired conditions.

  The weather information acquisition means of the navigation device acquires weather information from the outside using the communication unit. The image processing means reads the map data, analyzes the effective range of the weather information, and generates an image in which the weather information is superimposed on the map data. The display unit displays the image and presents weather information to the user.

  When the user uses the destination input means to select a destination that the user wants to go to from the destination data classified by classification, the classification information and position information of the determined destination are stored in the storage unit. When the user selects a desired or undesired specific weather name at the destination by the weather condition input means, it is stored in the storage unit as weather condition registration data. At this time, it is possible to specify any time in the past, present, and future of the destination.

  When the destination is registered, the weather information acquisition means extracts the weather of the destination set by the user from the weather information, and the meteorological information of the destination is compared with the weather condition registration data to match, include, or not match Etc. are determined.

  When this determination condition is satisfied, the destination classification information stored in the storage unit is acquired, and alternative destination candidates are extracted from the classified destination data. In selecting alternative destination candidates, the user can designate conditions for proposing an alternative destination using the alternative destination candidate selection condition registration means. For example, it can be registered as a condition that it matches, includes, or does not match with the classification of the destination, and that it is close to the current location, the destination, or an arbitrary point.

  Of the alternative destination candidates selected based on the alternative destination selection conditions, the same determination is made by comparing with the weather condition registration data. Subsequently, the image processing means can generate an image showing alternative destinations in the order that matches the user's wishes, and can propose an alternative destination that matches the user's registration conditions using the display unit.

  According to the present invention, weather information can be displayed in the effective range around the destination on the display device of the navigation device, the weather at the destination can be confirmed in advance, and the weather at the destination is not suitable A navigation device capable of presenting alternative destination candidates can be provided.

  Embodiments according to the present invention will be described below with reference to FIGS.

Embodiment 1
A first embodiment according to the present invention will be described below with reference to FIGS.

First, the configuration of the navigation device according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a block diagram showing a configuration example of a navigation device according to the first embodiment of the present invention.
FIG. 2 is a hardware configuration diagram of the navigation device according to the first embodiment of the present invention.

  As shown in FIG. 2, the hardware of the navigation apparatus according to the first embodiment of the present invention includes a display monitor 101, ROM 102, CPU 103, communication interface 104, GPS 105, input device 106, RAM 107, gyro 108, HDD 109, It consists of a DVD-ROM 110.

  The display monitor 101 is a device that displays information to the user using a liquid crystal display or the like. The ROM 102 is a non-volatile memory and stores a control program, fixed data, and the like. The CPU 103 performs calculation, program execution, and control of each unit. The communication interface 104 is an interface for communicating with the outside via an antenna. The GPS 105 is a system that communicates with a satellite or the like and confirms the traveling position. The input device 106 is a device for inputting information by a user such as a button, a remote controller, or a touch panel. The RAM 107 is a volatile memory, loads a program, and stores work data. The gyro 108 is a device for measuring the moving direction of the automobile. The HDD 109 is a device capable of storing a large amount of data, and stores map data and programs. The DVD-ROM drive 110 is a device that reads data from a DVD-ROM in which map data and programs are stored.

  The weather information 1 provided to the navigation device is transmitted from the weather information server 4 and provided. The weather information 1 includes one or a plurality of weather name data 11, valid range data 12, and valid time data 13. The weather information server 4 is a server that manages and provides weather information, and communicates with the navigation device via the Internet, an intranet, data broadcasting, or the like.

  The weather name data 11 is data representing specific weather names such as clear, cloudy, rainy, snowy, hail, and hail.

  The effective range data 12 indicates an effective range related to the weather data 11 and is, for example, a set of data related to the coordinates of the vertexes of the polygon.

  The valid time data 13 indicates the valid times related to the weather name data 11 and the valid range data 12 and the valid periods before and after. For example, when the weather information 1 at the current time is received, it is the time when the provider of the weather information 1 determines the weather name. Further, when the weather information 1 is received at a certain point at a certain time, the valid period may be a few minutes or a few hours depending on the accuracy of the time related to the forecast.

  The navigation device 2 includes a weather information acquisition unit 21, a communication unit 22, map data 23, an image processing unit 24, and a display unit 25.

  The weather information acquisition unit 21 has a function of controlling the communication unit 22 in order to transmit and receive the weather information 1. Moreover, you may provide the function which selects only required information among the weather information 1 acquired using the communication part 22. FIG.

  The communication unit 22 has a function of transmitting and receiving the weather information 1 and receives the weather information 1 from, for example, a server having weather information such as the Internet or an intranet, a data broadcast transmitter, or another vehicle.

  The map data 23 is map data including information on roads, nearby facilities, candidates for destinations, and the like.

  The image processing unit 24 reads the map data 23 and generates an image for display on the display unit 25, or generates a map image in which the weather information 1 is superimposed on the map. Further, in the weather information 1 acquired by the weather information acquisition unit 21, if the valid range data 12 includes the destination or the waypoint and the expected arrival time 264 is included in the valid time data 13, And an image in which the weather name data 11 at the time of arrival at the destination is superimposed on the map is generated, and the display unit 25 is requested to display the image.

  The display unit 25 plays a role of presenting the image generated by the image processing unit 24 to the user.

  The storage unit 26 is realized by the HDD 109, the ROM 102, and the RAM 107 shown in FIG. 2, and electronic data is stored as information. Specifically, destination information 261, weather condition registration data 262, alternative destination selection conditions 263, and estimated arrival time 264 can be stored.

  The destination information 261 includes destination classification information 2611 and destination position information 2612.

  The destination classification information 2611 is a genre to which the destination belongs when the user selects a destination from the classified destination data 27. For example, when XX amusement park is designated as the destination, the genre to which this amusement park belongs includes leisure facilities.

  The destination position information 2612 is the position information of the destination designated by the user, and includes, for example, information such as latitude and longitude. When a certain destination is selected from the map displayed on the display unit 25, the destination position information 2612 is the latitude and longitude regarding the destination. When the user selects a destination from the classified destination data 27, the destination position information 2612 is the location of the destination.

  The weather condition registration data 262 is a set of weather name data 11 that can be registered by the weather condition input unit 40 and is desired or not desired at the destination, waypoint, or route. The weather condition registration data 262 can also register conditions related to time. Specifically, any time in the past, the present, or the future, and its valid range can be designated.

  The alternative destination candidate selection condition 263 is a condition for selecting a destination presented as an alternative when the weather condition of the destination or the like matches or does not match the user-desired weather condition. Registration can be made by the destination candidate selection condition registration unit 50. Specifically, it is composed of at least one of the neighborhood condition and the classification condition. As the neighborhood condition, it is possible to select at least one of the present location, the current destination, or the vicinity of an arbitrary point as the destination presented as the alternative destination candidate. The classification condition can select at least one of a destination presented as an alternative destination that is the same, inclusive or inconsistent with the genre to which the current destination belongs.

  The estimated arrival time 264 is time data calculated by the estimated arrival time calculation unit 70. The time required to move from the current location to the destination location information 2612 set by the user is calculated. The estimated arrival time 264 can also be explicitly input by the user from the input device 106 shown in FIG.

  The classified destination data 27 is a set of candidate destinations presented for the user to select a destination. In some cases, it may be included in the map data 23.

  The destination input unit 30 can set a destination that the user wants to go to. When the destination is determined, a point on the map is directly designated based on the map displayed on the display unit 25 using the input device 106 shown in FIG. The destination may be selected using.

  The weather condition input unit 40 can register weather conditions desired or not desired by the user and store them in the storage unit 26. Specifically, the weather condition registration data 262 is designated by selecting one or a plurality of weather names such as sunny, cloudy, and rainy.

  The alternative destination candidate selection condition registration unit 50 can store the alternative destination candidate selection condition 263 in the storage unit 26.

  The alternative destination candidate selection unit 60 includes the weather condition determination unit 61 as an essential component, and the classification alternative candidate extraction unit 62 and the proximity determination unit 63 as optional components. The alternative destination candidate selection unit 60 extracts alternative destination candidates from the classified destination data 27 based on the weather condition registration data 262 and alternative destination candidate selection conditions 263 specified by the user, and displays the display unit. In order to present the alternative destination candidate to the user using 25, the image processing unit 24 is requested to generate an image.

  The weather condition determination unit 61 includes, in the weather information 1 acquired by the weather information acquisition unit 21, the destination range information 2612 specified by the user is included in the effective range data 12, and the weather condition registration data 262 specified by the user When the meteorological name data 11 matches, is included, or does not match, it has a role of requesting the alternative destination candidate selection unit 60 to perform processing. Also, when selecting alternative destination candidates, if the weather condition registration data matches, is included, or does not match the weather name data 11 related to the alternative destination candidates, it is left as a candidate or a candidate Responsible for the processing to be removed from.

  Based on the currently designated destination classification information 2611 and the alternative destination candidate selection condition 263 designated by the user, the classification alternative candidate extraction unit 62 selects an appropriate alternative destination candidate from the classified destination data 27. Extract.

  The proximity determination unit 63 extracts alternative destination candidates from the classified destination data 27 using either the current position or the destination position information 2612 based on the alternative destination candidate selection condition 263 designated by the user. .

  The estimated arrival time calculation unit 70 has a function of calculating a time required to reach the destination based on the current position and the destination position information 2612 designated by the user.

Next, a process in which the user selects a destination and displays a map image in which weather information is superimposed and displayed on the map on the display unit will be described with reference to FIG.
FIG. 3 is a flowchart showing processing for determining a destination.
FIG. 4 is a diagram illustrating an example of a screen for presenting alternative destination candidates to the user.

  First, the weather condition registration unit 40 is used by the user to register the desired or undesired weather name condition, the time at which the weather is to be investigated, and if necessary, the effective range as the weather condition registration data 262 (S1). ).

  Next, the alternative destination candidate selection condition registration unit 50 is used to register an alternative destination selection condition 263 that is a characteristic of the destination selected as an alternative. For example, it is registered as a condition that the genre is the same, inclusive, or inconsistent with the destination set thereafter, close to the set destination, close to the current location, etc. (S2). This process may be skipped when registered in advance.

  Next, a destination is set using the destination input unit 30 (S3). At this time, destination position information 2611 and classification information 2612 are determined.

  Next, the required time from the current location to the destination set in S3 is calculated and stored in the storage unit 26 as the estimated arrival time 264 (S4). This process is omitted when the user inputs the estimated arrival time in advance.

  Next, the weather information acquisition part 21 acquires the weather information 1 regarding at least one of the whole country or an area using the communication part 22 (S5).

  Next, the weather information regarding the destination position information 2612 set in S3 at the time of the registered weather condition registration data 262 is extracted (S6).

  Next, it is determined whether the weather of the destination position information 2612 set in S3 matches, includes, or does not match the weather condition registration data 262 registered in S1 (S7). As a result of the determination, if the user's desired conditions are not met, the process proceeds to S8. When the desired condition is satisfied, the process proceeds to S16.

  In S8, the classification alternative candidate extraction unit 62 determines from the classification-specific destination data 27 based on the destination classification information 2611 set in S3 and the alternative destination selection condition 263 set in S2. Extract genre alternative destination candidates.

  Next, from the alternative destination candidates extracted in S8, the proximity determining unit 63 uses at least one of the current location and the destination location information 2612, and based on the alternative destination selection condition 263, the alternative near the user-desired point A destination is selected (S9).

  Next, the alternative destination candidates selected in S9 are sorted based on the alternative destination selection condition 263 in the order closer to the user desired point (S10).

  Next, the weather information acquisition unit 21 determines whether the alternative destination candidates sorted in S <b> 10 match, include, or do not match the weather condition registration data 262. As a result of the determination, if the condition desired by the user is met, the process proceeds to S13. On the other hand, if they do not match, the process proceeds to S12.

  In S12, the alternative destination that does not meet the conditions desired by the user is deleted, and the process proceeds to S13.

  In S13, the image processing unit 24 generates an image related to the alternative destination candidate, and requests the display unit 25 to display the image.

  Next, it is determined whether or not the user has selected the presented alternative destination candidate. When the alternative destination candidate presented as the new destination is selected, the process proceeds to S16. On the other hand, if not selected, the process proceeds to S15.

  In S <b> 15, the image processing unit 24 generates an image for changing at least one of the weather condition 262 and the alternative destination selection condition 263, and requests the display unit 25 to display the image. If the user changes the condition, the process returns to S1. If no change is made, an alternative destination cannot be selected, so the flow ends.

  In S16, the destination information 261 is determined, and the flow ends.

  Hereinafter, an example of a screen for presenting alternative destination candidates to the user will be described with reference to FIG.

  The road 401 is an image of information related to a road included in the map data 23 and is displayed on the display unit 25.

  The own vehicle position mark 402 is an icon that associates the current position of the own vehicle 2 on the road.

  The weather boundary line 403 is a boundary line that is displayed when a plurality of weather name data 1 exists on the road map.

  The weather icon 404 indicates the weather in the area as an icon when there are a plurality of weather name data 1 on the road map. Instead of such an icon display, the area itself may be colored.

  The destination icon 405 is an icon indicating the position of the destination designated by the user first.

  The alternative destination icon 406 is an icon indicating the position of an alternative destination presented by the navigation device. As shown in FIG. 4, the user can also determine that the destination 405 is in the rain region, and the user does not desire that the weather at the destination is rain, and a condition for selecting a clear destination If it is set, another destination included in the area where the alternative destination icon 406 is clear is displayed.

  As described above, when a user sets a destination, the user confirms the weather of the set destination in advance by receiving it from a server or the like holding weather information of the destination set by the user. Even if the weather at the destination does not meet the user's wishes, it is possible to assist the resetting of the destination by presenting alternative destination candidates that meet the conditions.

[Embodiment 2]
Hereinafter, a second embodiment according to the present invention will be described with reference to FIGS. 5 and 6.

  In the first embodiment, the user inputs a destination and receives information about the weather at the destination from the external weather information server 4. The present embodiment has a function of allowing a user to input a destination, calculating the route, and receiving information related to the weather of the destination or the route from the other vehicle.

First, the configuration of the navigation device according to the second embodiment of the present invention will be described with reference to FIG.
FIG. 5 is a block diagram showing a configuration example of a navigation device according to the second embodiment of the present invention.

  The weather information 1 is composed of one or a plurality of weather name data 11, effective range data 12, and effective time data 13. The weather information 1 of the present embodiment is transmitted from the communication unit 322 attached to the navigation device 3 installed in another vehicle.

  The navigation device 3 installed in another vehicle is a navigation device installed in a vehicle different from the navigation device 2 of the own vehicle. From the weather history acquisition unit 320, the communication unit 322, the storage unit 326, and the weather information transmission unit 5 Composed.

  The storage unit 326 can store the weather information 1 and the weather history information 310.

  The weather history information 310 is data stored in the storage unit 326. The weather history information 310 is a set of the weather name data 311 and the travel position 312 at the time indicated by the time data 313, and is composed of one or a plurality of sets. can do. The weather history information 310 is the same type of information as the weather information 1, but is different in that it is weather information about a route traveled by a vehicle equipped with this navigation device.

  The weather name data 311 has the same contents as the weather name data 1 and indicates specific weather names such as rain, cloudy, snow, and the like. The weather name data 311 can store weather information received from other vehicles, or can determine the weather by a sensor (not shown) attached to the vehicle and store it as information.

  The travel position data 312 is position information regarding the road on which the vehicle 3 has traveled.

  The time data 313 has the same contents as the valid time data 13 and indicates at least one of the time and the period when the weather name data 311 and the travel position 312 are stored. The time data 313 follows a format specified by the weather information transmission unit 4 that provides the weather information 1.

  The weather history acquisition unit 320 reads data belonging to the weather information 1 from the storage unit 326, and requests the communication unit 322 to transmit to another vehicle or to the weather information server 4 illustrated in FIG.

  The communication unit 322 plays a role of transmitting the weather information 1 obtained by the weather history acquisition / acquisition unit 320 to another communication unit.

  Specifically, the weather information transmission unit 5 is a transmission device that transmits a data broadcast including weather information to a weather information server holding weather information connected via the Internet or an intranet, or to other vehicles. .

  The navigation device 2 has a route search unit 90 and route information 265 added as compared to the first embodiment.

  The route search unit 90 has a function of searching for a route for reaching the destination from the current location when the destination information 261 is designated by the user. The search result can be stored in the storage unit 26 as route information 265.

  The route information 265 is a set of road information and right / left turn information up to the point indicated by the destination position information 2612, is calculated by the route search unit 90, and is stored in the storage unit 26.

  The processing on the own vehicle side is basically the same as in the case of the first embodiment, and only different parts will be described.

  First, the configuration of the navigation device 3 installed in another vehicle that transmits the weather information 1 is different.

  Next, the communication unit 22 transmits a request for the weather information 1 to the communication unit 322 of the navigation device 3 of the other vehicle. After receiving the request, the weather information acquisition unit 320 transmits the presence of at least one of the weather information 1 and the weather history information 310 stored in the storage unit 321 to the communication unit 22 through the communication unit 322. Then, the communication unit 22 transmits time data of the destination position information 2612 and the weather condition registration data 262 to the communication unit 322.

  Alternatively, when the communication unit 22 makes a request for the weather information 1 to the communication unit 322 of the navigation device 3 installed in the other vehicle, the destination position information 2612 stored in the storage unit 26 and the weather condition registration data 262 are stored. You may transmit the time data simultaneously.

  The weather history acquisition unit 320 searches the weather history 310 including the specified time data and the position indicated by the specified destination position information 2612.

  If there is weather history information 310 corresponding to the search condition, the communication unit 322 transmits the weather history information 310 to the communication unit 22 of the navigation device 2 of the own vehicle.

Next, a process in which the navigation apparatus installed in another vehicle transmits weather information will be described with reference to FIG.
FIG. 6 is a flowchart showing a process in which a navigation device installed in another vehicle transmits weather information.

  When the weather information of a point where a navigation device installed in another vehicle is transmitted, the current weather information may be transmitted, and the weather information of a place that has passed the point in the past may be transmitted.

  First, in S20, the weather history information 310 stored in the storage unit 321 is updated (S20).

  Next, the communication unit 322 determines whether or not the communication unit 22 of the navigation device 2 of the host vehicle has received a request to respond whether the weather information 1 is not owned or not (S21). If received, the process proceeds to S22. If the request has not been received, the process returns to S20 and the weather history information 310 is updated.

  In S22, the communication unit 322 includes the destination position information 2612 and the weather condition registration data 262 stored in the storage unit 26 of the navigation device 2 of the host vehicle transmitted by the communication unit 22 of the navigation device 2 of the host vehicle. Receive a request containing valid time data.

  Next, the weather history acquisition unit 320 extracts the position and valid time data indicated by the destination position information 2612 from the request (S23).

  Next, based on the extracted search condition, the weather history information 310 is searched for a matching weather history (S24).

  Next, when there is the matched weather history information 310, the communication unit 322 transmits the weather history information 310 to the communication unit 22 (S25). When there is no match, the communication unit 322 transmits nothing or transmits information indicating that there is no matched weather history information 310.

  Thereafter, the process returns to S20.

  As described above, when the user sets the destination, by receiving the weather information of the destination from other vehicles, the user can confirm the weather of the set destination in advance. Even when the local weather does not meet the user's wishes, it is possible to assist the resetting of the destination by presenting alternative destination candidates that meet the conditions.

It is a block diagram which shows the structural example of the navigation apparatus which concerns on 1st embodiment of this invention. It is a hardware block diagram of the navigation apparatus which concerns on 1st embodiment of this invention. It is a flowchart which shows the process which determines the destination. It is a figure which shows an example of the screen which presents an alternative destination candidate to a user. It is a block diagram which shows the structural example of the navigation apparatus which concerns on 2nd embodiment of this invention. It is a flowchart which shows the process which the navigation apparatus of another vehicle installation transmits a weather information.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Weather information 2 ... Navigation apparatus 3 ... Navigation apparatus 4 installed in other vehicles ... Weather information server 5 ... Weather information transmission part 21 ... Weather information acquisition part 22 ... Communication part 23 ... Map data 24 ... Image processing part 25 Display unit 26 Storage unit 27 Classification destination data 30 Destination input unit 40 Weather information input unit 50 Alternative destination candidate selection condition registration unit 60 Alternative destination candidate selection unit 61 Weather condition determination unit 62 ... Same-classification alternative candidate extraction unit 63 ... Neighborhood determination unit 70 ... Expected arrival time calculation unit 90 ... Route search unit

Claims (11)

A communication unit for communicating information about the weather;
Image processing means for reading map data and performing image processing;
A display unit for displaying an image generated by the image processing means,
The information on the weather consists of the name of the weather and the effective range of the information on the weather,
The image processing means uses the information about the weather acquired by the communication unit to create a map image in which the information about the weather is superimposed on a map,
The navigation device, wherein the display unit displays the map image. Information on the weather acquired by the communication unit is further,
The navigation apparatus according to claim 1, further comprising an effective time or an effective period of information related to the weather. Furthermore, a user has destination input means for inputting the destination position as destination position information,
The image processing means extracts the information including the destination position information from the information on the weather acquired by the communication unit, and creates a map image in which the information on the weather is superimposed on the map data. The navigation device according to claim 2, wherein: Furthermore, a destination route information calculation means is provided,
The destination route calculation means calculates a route for arriving at the destination input as the destination location information using the destination location information and an estimated arrival time assumed to arrive at the destination by the route. And
The image processing means includes the destination position information from the information on the weather acquired by the communication unit, and the estimated arrival time is an effective time of the information on the weather or included in an effective period The navigation apparatus according to claim 3, wherein a map image in which information about the weather extracted in the map data is superimposed and displayed is created. Furthermore, it comprises an arrival time input means for the user to input an arbitrary time as an expected arrival time,
The image processing means includes the destination position information from information on weather acquired by the communication unit, and whether the expected arrival time input from the arrival time input is an effective time of the information on weather, 4. The navigation apparatus according to claim 3, further comprising: extracting a map included in an effective period, and creating a map image in which information relating to the weather extracted in the map data is superimposed and displayed. The destination input means further allows the user to select a destination according to the classification information,
4. The navigation apparatus according to claim 3, wherein the destination position information is determined from the selected destination. Furthermore, a weather condition input means for a user to input a weather name as weather condition registration data, and a weather condition determination means,
The weather-related information acquired by the communication unit includes the destination position information, and the expected arrival time is an effective time of the weather-related information, or is included in an effective period, and the weather condition When the determination unit determines that the information about the weather acquired by the communication unit does not match the predetermined condition of the weather condition registration data input from the user,
The image processing means generates a destination change recommended image for changing the destination,
The navigation device according to claim 4, wherein the display unit displays the destination change recommended image. Furthermore, the alternative candidate selection condition registration means for registering the classification selection condition in the storage unit, the same classification alternative candidate extraction means, and destination data classified by classification,
The classification selection condition allows the user to register that the candidate to be selected as an alternative is at least one of the classification to which the destination belongs, the inclusion relationship, or the mismatch as the alternative candidate selection condition,
The weather-related information acquired by the communication unit includes the destination position information, and the expected arrival time is an effective time of the weather-related information, or is included in an effective period, and the weather condition When the determination unit determines that the information about the weather acquired by the communication unit does not match the predetermined condition of the weather condition registration data input from the user,
The same category alternative candidate extracting means selects an alternative destination candidate from the category-specific destination data according to the same category selection condition,
The image processing means generates an image recommending an alternative destination in which information related to the alternative destination candidate is superimposed and displayed on the map data,
The navigation device according to claim 7, wherein the display unit displays an image recommending the alternative destination. Furthermore, it has alternative candidate selection condition registration means for registering neighborhood judgment conditions, neighborhood judgment means, and classification destination data,
As the proximity determination condition, the user can register that it is an alternative candidate selection condition that is close to at least one of the destination, the current location, and an arbitrary location,
The weather information acquired by the communication unit includes the destination position information, and the estimated arrival time is an effective time of the information or included in an effective period, and the weather condition determination unit If it is determined that the information about the weather input from the user does not match the predetermined condition of the weather condition registration data,
The proximity determining means selects alternative destination candidates from the classified destination data according to the proximity determination conditions,
The image processing means generates an image that recommends an alternative destination in which information on the alternative destination candidate is superimposed on the map data,
The navigation device according to claim 8, wherein the display unit displays an image recommending the alternative destination.   The navigation apparatus according to claim 1, wherein the information related to the weather is transmitted from a vehicle that has traveled in the past or is currently traveling at a point away from the vehicle. Receiving weather information comprising a weather name and a valid range of information about the weather;
Loading map data;
A step of inputting a destination position from the user as destination position information;
Calculating a route for arriving at the destination inputted as the destination position information, and an estimated arrival time assumed to arrive at the destination by the route;
The destination location information is included from the received weather information, and the expected arrival time is the effective time of the information on the weather, or extracting what is included in the effective period;
A step in which a weather name is input as a weather condition by a user;
Determining whether the extracted weather-related information matches a weather condition input by the user;
A step of displaying an alternative candidate site when the extracted weather information does not match the input weather condition;
Selecting the alternative candidate location as a new destination from the user;
A method for displaying a navigation device, comprising: creating and displaying a map image in which information related to the weather is superimposed on a map based on the map data and the extracted weather conditions.

Images