JP2013019855A - Travel guiding device, travel guiding method and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a travel guiding device, a travel guiding method and a computer program that allow an occupant getting out of a vehicle to accurately determine whether he/she needs rain gear or not.SOLUTION: The travel guiding device, the travel guiding method and the computer program are configured to: set a guide route to a destination of the vehicle (S2); predict expected arrival time to the destination of the vehicle (S3); acquire weather prediction information in the destination at the predicted expected arrival time (S4); and give a guidance about the rain gear if it is determined that the rain gear is needed under weather in the destination at the expected arrival time and a facility set as the destination does not have a roof (S11).

Description

  The present invention relates to a travel guide device, a travel guide method, and a computer program for guiding travel of a vehicle.

  2. Description of the Related Art In recent years, a navigation device is often mounted on a vehicle that provides vehicle travel guidance so that a driver can easily arrive at a desired destination. Here, the navigation device detects the current position of the vehicle by a GPS receiver or the like, acquires map data corresponding to the current position through a recording medium such as a DVD-ROM or HDD or a network, and displays it on a liquid crystal monitor. It is a device that can. In addition, the navigation device has a route search function for searching for an optimum route from a departure point (for example, the current position of the host vehicle) to the set destination when a desired destination is set. It also has a travel guidance function for guiding travel according to the route. In recent years, some cellular phones, PDAs (Personal Digital Assistants), personal computers, and the like have functions similar to those of the navigation device.

  In addition, in a conventional navigation device or the like, weather prediction information is acquired, and when weather deterioration is predicted, guidance regarding weather deterioration is also performed. For example, Japanese Patent Laid-Open No. 2005-345293 requires an umbrella when the precipitation probability information of the current position of the vehicle is acquired from the center and the precipitation probability is equal to or greater than a predetermined threshold at the timing when the vehicle occupant gets off And a technique for guiding the vehicle occupant to carry rain gear.

Japanese Patent Laying-Open No. 2005-345293 (pages 8 to 10, FIG. 5)

  Here, in the technology described in Patent Document 1, the vehicle is dismounted based only on the relationship between the precipitation probability information and the threshold without considering the surrounding environment of the vehicle position when the occupant dismounts the vehicle. The occupant who was doing was judging whether rain gear was needed. However, whether or not the occupant who gets off the vehicle needs the rain gear greatly depends on the surrounding environment of the vehicle position when the occupant gets off the vehicle. For example, if the vehicle position when the occupant gets off the vehicle is a covered facility (such as an underground parking lot in a building), the occupant needs to carry rain gear even if it rains after the occupant gets off It is not considered. In the technique described in Patent Document 1, the surrounding environment of the vehicle position when such an occupant gets off the vehicle is not considered, and it is accurately determined whether the occupant who got off the vehicle needs rain gear. Could not be judged.

  The present invention has been made to solve the above-described conventional problems, and whether the occupant who gets off the vehicle needs rain gear by considering the surrounding environment of the vehicle position when the occupant gets off the vehicle. It is an object of the present invention to provide a travel guide device, a travel guide method, and a computer program that can accurately determine whether or not.

  In order to achieve the object, the travel guidance device (1) according to claim 1 of the present application predicts a destination setting means (13) for setting a facility as a destination, and an estimated arrival time when a vehicle arrives at the destination. An arrival time predicting means (13), a weather prediction information acquiring means (13) for acquiring weather forecast information of the destination at the estimated arrival time predicted by the arrival time predicting means, and the weather information acquiring means Weather determination means (13) for determining whether or not the weather at the destination at the estimated arrival time is a weather that requires rain gear based on the acquired weather prediction information, and the facility set at the destination The facility information acquisition means (13) for acquiring facility information on the facility, and the facility set as the destination based on the facility information acquired by the facility information acquisition means is a covered facility A roof determining means (13) for determining whether or not the weather at the destination at the estimated arrival time is determined to be a weather requiring rain gear, and the destination is determined by the roof determining means. Rain equipment guide means (13) for performing guidance on rain equipment when it is determined that the facility set in is not a covered facility, and the rain equipment guidance means includes a facility set as the destination. When it is a parking lot, when the distance from the parking lot set as the destination to the facility to which the parking lot belongs is a predetermined distance or more, guidance on the rain gear is performed.

  Further, the travel guide device (1) according to claim 2 is the travel guide device according to claim 1, wherein the rain gear guide means (13) determines the destination by the destination setting means (13). It is characterized by providing guidance on rain gear when set.

  A travel guidance device (1) according to claim 3 is the travel guidance device according to claim 1 or 2, wherein an arrival determination means for determining whether or not the vehicle has arrived at the destination. 13), and the rain gear guidance means (13) performs rain gear guidance when it is determined that the vehicle has arrived at the destination by the destination arrival determination setting.

  The travel guidance method according to claim 4 includes: a destination setting step for setting a facility as a destination; an arrival time prediction step for predicting an arrival time at which a vehicle arrives at the destination; and an arrival time prediction step. The weather prediction information acquisition step for acquiring the weather prediction information of the destination at the estimated arrival time predicted by the step, and the purpose at the estimated arrival time based on the weather prediction information acquired by the weather information acquisition step Acquired by a weather determination step of determining whether or not the local weather is a weather that requires rain gear, a facility information acquisition step of acquiring facility information related to the facility set at the destination, and the facility information acquisition step Based on the facility information, a roof determination step for determining whether the facility set as the destination is a covered facility. And the weather determination step determines that the weather at the destination at the estimated arrival time is a weather that requires rain gear, and the facility set as the destination by the roof determination step is not a roofed facility. A rain gear guidance step for providing guidance regarding rain gear when determined, wherein the rain gear guidance step is set at the destination when the facility set at the destination is a parking lot. When the distance from the parking lot to the facility to which the parking lot belongs is a predetermined distance or more, guidance on the rain gear is provided.

  Furthermore, the computer program according to claim 5 is installed in a computer, and a destination setting function for setting a facility as a destination, an arrival time prediction function for predicting an arrival time at which a vehicle arrives at the destination, Based on the weather prediction information acquisition function that acquires the weather prediction information of the destination at the estimated arrival time predicted by the arrival time prediction function, and the weather prediction information acquired by the weather information acquisition function, the arrival schedule A weather determination function for determining whether the weather at the destination at the time is a weather that requires rain gear, a facility information acquisition function for acquiring facility information related to the facility set at the destination, and the facility information acquisition function A roof determination function for determining whether the facility set as the destination is a covered facility based on the facility information acquired by The weather determination function determines that the weather at the destination at the estimated arrival time is a weather requiring rain gear, and the roof determination function determines that the facility set as the destination is not a roofed facility. A raindrop guidance function for performing guidance on rainwear, and a computer program for causing the processor to execute the rainwear guidance function when the facility set at the destination is a parking lot. When the distance from the parking lot set as the destination to the facility to which the parking lot belongs is a predetermined distance or more, guidance on the rain gear is performed.

In the travel guidance device according to claim 1 having the above configuration, it is possible to accurately determine whether or not the occupant who got off the vehicle needs rain gear by considering the surrounding environment of the vehicle position when the occupant gets off the vehicle. It becomes possible to judge. As a result, it is possible to provide the user with guidance regarding rain gear at a necessary and appropriate timing.
In addition, when the facility set as the destination is a parking lot, if the distance from the parking lot set as the destination to the facility to which the parking lot belongs is a predetermined distance or more, guidance on rain gear is given. In particular, particularly when the destination is a parking lot, it is possible to accurately determine whether or not the occupant who got off the vehicle needs rain gear. In other words, even if the weather requires rain gear, if the travel distance from the parking lot where the vehicle is parked to the facility is short, the passenger who got off the vehicle does not need rain gear to travel to the facility. It is possible to appropriately consider the situation.

  Further, in the travel guidance device according to claim 2, since the guidance regarding the rain gear is provided when the destination is set, it is necessary in advance after the vehicle gets off at the destination when the vehicle starts traveling to the destination. It becomes possible to guide the rain gear. As a result, the rain gear can be reliably carried in the vehicle in a situation where the rain gear is required.

  Further, in the travel guidance device according to claim 3, since it provides guidance regarding rain gear when it is determined that the vehicle has arrived at the destination, it is necessary after the vehicle has arrived at the destination, after getting off at the destination. It becomes possible to guide the rain gear. As a result, the user can reliably carry the rain gear without leaving the rain gear in the vehicle in a situation where the rain gear is required.

In the travel guidance method according to claim 4, it is accurately determined whether or not the occupant who got off the vehicle needs rain gear by considering the surrounding environment of the vehicle position when the occupant gets off the vehicle. It becomes possible. As a result, it is possible to provide the user with guidance regarding rain gear at a necessary and appropriate timing.
In addition, when the facility set as the destination is a parking lot, if the distance from the parking lot set as the destination to the facility to which the parking lot belongs is a predetermined distance or more, guidance on rain gear is given. In particular, particularly when the destination is a parking lot, it is possible to accurately determine whether or not the occupant who got off the vehicle needs rain gear. In other words, even if the weather requires rain gear, if the travel distance from the parking lot where the vehicle is parked to the facility is short, the passenger who got off the vehicle does not need rain gear to travel to the facility. It is possible to appropriately consider the situation.

Furthermore, the computer program according to claim 5 makes it possible to accurately determine whether or not the occupant who got off the vehicle needs rain gear by considering the surrounding environment of the vehicle position when the occupant gets off the vehicle. Is possible. As a result, it is possible to provide the user with guidance regarding rain gear at a necessary and appropriate timing.
In addition, when the facility set as the destination is a parking lot, if the distance from the parking lot set as the destination to the facility to which the parking lot belongs is a predetermined distance or more, guidance regarding rain gear is given. Therefore, particularly when the destination is a parking lot, it is possible to accurately determine whether or not the occupant who got off the vehicle needs rain gear. In other words, even if the weather requires rain gear, if the travel distance from the parking lot where the vehicle is parked to the facility is short, the passenger who got off the vehicle does not need rain gear to travel to the facility. It is possible to appropriately consider the situation.

It is the block diagram which showed the navigation apparatus which concerns on this embodiment. It is the figure which showed an example of the facility data memorize | stored in map information DB. It is a flowchart of the rain gear guidance processing program which concerns on this embodiment. It is a figure explaining destination setting operation. It is a figure explaining destination setting operation.

  DETAILED DESCRIPTION Hereinafter, a travel guide device according to the present invention will be described in detail with reference to the drawings based on an embodiment in which the navigation device is embodied. First, a schematic configuration of the navigation device 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing a navigation device 1 according to this embodiment.

  As shown in FIG. 1, the navigation device 1 according to the present embodiment includes a current position detection unit 11 that detects a current position of a vehicle on which the navigation device 1 is mounted, a data recording unit 12 that records various data, A navigation ECU 13 that performs various arithmetic processes based on the input information, an operation unit 14 that receives operations from the user, and a liquid crystal display 15 that displays a map around the vehicle and facility information related to the facility to the user. Between a speaker 16 that outputs voice guidance related to route guidance, a DVD drive 17 that reads a DVD as a storage medium, and an information center such as a weather information center 19 or a VICS (registered trademark: Vehicle Information and Communication System) center. And a communication module 18 for performing communication.

Below, each component which comprises the navigation apparatus 1 is demonstrated in order.
The current position detection unit 11 includes a GPS 21, a vehicle speed sensor 22, a steering sensor 23, a gyro sensor 24, and the like, and can detect the current vehicle position, direction, vehicle traveling speed, current time, and the like. . Here, in particular, the vehicle speed sensor 22 is a sensor for detecting a moving distance and a vehicle speed of the vehicle, generates a pulse according to the rotation of the driving wheel of the vehicle, and outputs a pulse signal to the navigation ECU 13. And navigation ECU13 calculates the rotational speed and moving distance of a driving wheel by counting the generated pulse. Note that the navigation device 1 does not have to include all of the above five types of sensors, and the navigation device 1 may include only one or more of these types of sensors.

  The data recording unit 12 is also a hard disk (not shown) as an external storage device and a recording medium, and a driver for reading the map information DB 31 and a predetermined program recorded on the hard disk and writing predetermined data on the hard disk And a recording head (not shown). The data recording unit 12 may be configured by a memory card, an optical disk such as a CD or a DVD, instead of the hard disk.

  Here, the map information DB 31 includes, for example, link data 32 relating to roads (links), node data 33 relating to node points, facility data 34 relating to facilities, map display data for displaying a map, intersection data relating to each intersection, and routes. It is a storage means in which search data for searching, search data for searching for points, and the like are stored.

Here, as the facility data 34, information related to a facility that is a departure point, a destination, a guidance target, or the like in the navigation device 1 is stored. For example, accommodation facilities such as hotels and inns, refueling facilities such as gas stations, commercial facilities such as shopping malls, supermarkets, shopping centers, entertainment facilities such as theme parks and game centers, dining facilities such as restaurants, bars and taverns, and public facilities Information on parking facilities such as parking lots, transportation facilities, religious facilities such as temples and churches, public facilities such as museums and museums, and the like.
The facility data 34 includes, for each facility, a facility number that is an identifier of the facility, a facility name that indicates the name of the facility, and a facility genre that indicates the genre of the facility (such as “parking lot”, “post office”, “restaurant”) It is composed of position coordinates indicating the position of the facility. Furthermore, the facility data 34 also stores information on the presence or absence of a roof and the dependency between facilities. For example, if the facility is a parking lot and the parking lot is a parking lot belonging to another nearby facility (for example, a partner parking lot for users of theme parks or shopping malls), As the facility data of the parking lot, the facility that is the subject of the subordinate is also stored. Furthermore, when the parking lot is a three-dimensional parking lot or an indoor type parking lot, information specifying that it is a covered facility is also stored.

Here, FIG. 2 is a diagram showing an example of the facility data 34.
For example, the example of the facility data 34 shown in FIG. 2 indicates that “XX land” (genre: amusement park) corresponding to the facility number: “10001” is installed at the point of coordinates (x1, y1). ing. In addition, it is shown that “◯ × parking lot” (genre: parking lot) corresponding to the facility number: “10002” is installed at the point of coordinates (x2, y2). Furthermore, both “XX Land” and “XX Parking Lot” are facilities without a roof, and XX Parking Lot is a parking lot belonging to XX Land (so-called partner parking lot). Similarly, information on other facilities is also stored.

  Then, when performing the facility search process, the navigation device 1 uses the facility data 34 to search for a facility that matches the search condition selected by the user, and guides facility information related to the facility that matches the search condition. . In addition, when the user performs an operation of setting a facility to which the user is guided or a facility located in the vicinity thereof as a destination or a waypoint, a guidance route is set in which the facility is set as a destination or a waypoint. Furthermore, based on weather information and the presence or absence of the roof of the facility set at the destination as described later, it is determined whether or not the occupant who got off the vehicle at the destination needs rain gear. If it is determined that there is, guidance regarding carrying the rain gear is also provided.

  On the other hand, the navigation ECU (Electronic Control Unit) 13 is an electronic control unit that controls the entire navigation device 1. The CPU 41 as an arithmetic device and a control device, and a working memory when the CPU 41 performs various arithmetic processes. Read out from the ROM 43 and the ROM 43 in which the rain data guidance processing program (see FIG. 3) to be described later is recorded in addition to the RAM 42 for storing the route data when the route is searched and the control program. And an internal storage device such as a flash memory 44 for storing the program. The navigation ECU 13 constitutes various means as processing algorithms. For example, the destination setting means sets one of the facilities on the map as the destination of the navigation apparatus 1, and the guidance route setting means sets a guidance route from the departure point to the destination. The arrival time prediction means predicts the estimated arrival time when the vehicle arrives at the destination, and the weather prediction information acquisition means acquires the weather prediction information of the destination at the predicted arrival time. The weather determination means determines whether the weather at the destination at the estimated arrival time is a weather that requires rain gear, based on the weather prediction information acquired by the weather information acquisition means. The facility information acquisition means acquires facility information related to the facility set as the destination, and the roof determination means determines whether the facility set as the destination is a covered facility based on the acquired facility information. To determine. The rain gear guidance means determines that the weather at the destination at the estimated arrival time is the weather that requires rain gear by the weather determination means, and determines that the facility set as the destination by the roof determination means is not a covered facility. In case of rain, guidance on rain gear is given. The arrival determination means determines whether or not the vehicle has arrived at the destination.

  The operation unit 14 is operated when inputting a departure point as a travel start point and a destination as a travel end point, and includes a plurality of operation switches (not shown) such as various keys and buttons. Then, the navigation ECU 13 performs control to execute various corresponding operations based on switch signals output by pressing the switches. The operation unit 14 can also be configured by a touch panel provided on the front surface of the liquid crystal display 15. Moreover, it can also be comprised with a microphone and a speech recognition apparatus.

  The liquid crystal display 15 also includes a map image including a road, traffic information, operation guidance, operation menu, key guidance, a planned travel route from the departure point to the destination, guidance information along the planned travel route, news, weather Forecast, time, mail, TV program, etc. are displayed. In particular, in this embodiment, when the destination is set, when it is determined that the occupant who got off the vehicle at the destination needs rain gear, guidance regarding carrying the rain gear is also displayed.

  Further, the speaker 16 outputs voice guidance for guiding traveling along the planned traveling route and traffic information guidance based on an instruction from the navigation ECU 13. In particular, in this embodiment, when the destination is set, if it is determined that the occupant who got off the vehicle at the destination needs the rain gear, the guidance voice regarding the carrying of the rain gear is also output.

  The DVD drive 17 is a drive that can read data recorded on a recording medium such as a DVD or a CD. Based on the read data, music and video are reproduced, the map information DB 31 is updated, and the like.

  The communication module 18 is a communication device for receiving traffic information composed of information such as traffic jam information, regulation information, and traffic accident information transmitted from a traffic information center, for example, a VICS center or a probe center. For example, a mobile phone or DCM is applicable. The communication module 18 is also used to receive weather prediction information for predicting the future weather in the designated area from the weather information center 19.

  Next, a rain gear guidance processing program executed in the navigation device 1 having the above configuration will be described with reference to FIG. FIG. 3 is a flowchart of the rain gear guidance processing program according to this embodiment. Here, the rain gear guidance processing program is executed when a predetermined operation for setting the destination is received in the navigation device 1, and when the occupant who gets off the vehicle at the destination needs the rain gear, the rain gear is carried. It is a program that gives guidance on. The program shown in the flowchart of FIG. 3 below is stored in the RAM 42, ROM 43, etc. provided in the navigation ECU 13 and executed by the CPU 41.

  First, in the rain gear guidance processing program, in step (hereinafter abbreviated as S) 1, the CPU 41 sets a final destination and a guidance destination in the navigation device 1. Here, the final destination is a facility where the user finally wants to stop by. On the other hand, a guidance destination is a facility that is a destination of a route when performing a route search. Here, when the final destination is different from the guidance destination, for example, when a large facility such as a shopping mall or an amusement park is set as the final destination, the user sets the parking lot of the facility as the guidance destination. There are cases. When the final destination and the guidance destination are the same, only one facility is set as the final destination and the guidance destination.

Here, FIGS. 4 and 5 are diagrams illustrating an example of a user's destination setting operation.
When the user sets a destination, first, a facility as a final destination is selected from a list of facilities registered in advance and facilities that match the search conditions. As a result, the surrounding map guide screen 51 shown in FIG. On the surrounding map guidance screen 51, the facility 52 ("XX Land" in the example shown in FIG. 4) of the selected final destination and a map around the facility are displayed. In addition, on the surrounding map guidance screen 51, a cursor 53 displayed in the center of the screen, a movement arrow 54 arranged in eight directions around the cursor 53, a partner parking button 55, a destination setting button 56, and the like are arranged. When the movement arrow 54 is pressed, the map moves in the direction indicated by the pressed arrow. When the partner parking lot button 55 is pressed, a parking lot belonging to the facility 52 set as the final destination (so-called partner parking lot) is searched, and a list of searched partner parking lots is displayed. When the destination setting button 56 is pressed, the point or facility indicated by the cursor 53 at the time of pressing is set as the guidance destination.

  Accordingly, in the surrounding map guidance screen 51, the facility 52 as the final destination can be set as the guidance destination by pressing the destination setting button 56 in the initial state where the surrounding map guidance screen 51 is displayed. Although it is possible, other facilities and points can be set as guidance destinations by operating the movement arrow 54. For example, in large facilities such as theme parks and shopping malls, the location of the facility and the parking lot may be separated. In that case, it is better to set the parking lot instead of the facility as the guidance destination and search for an appropriate guidance route It becomes possible to do. Therefore, as shown in FIGS. 4 and 5, when three parking lots 57 to 59 belonging to “XX land” are arranged around “XX land” which is the searched facility 52, By pressing the movement arrow 54, the cursor 53 is moved to one of the parking lots 57 to 59, and when the destination setting button 56 is pressed, any of the parking lots 57 to 59 instead of the facility 52 that is the final destination. Can be set as the guidance destination. Further, by pressing the partner parking lot button 55, a list of parking lots 57 to 59 belonging to the facility 52 as the final destination is displayed, and by selecting a parking lot from the displayed parking lots 57 to 59, It is also possible to set the selected parking lot as the guidance destination.

  Next, in S2, the CPU 41 searches for a route from the departure place (for example, the current position of the vehicle) to the guidance destination set in S1, and sets a guidance route. The route search process is performed using a known Dijkstra method.

  Subsequently, in S3, when the CPU 41 assumes that the vehicle has traveled to the guidance destination set in S1 along the guidance route set in S2, the estimated arrival time when the vehicle arrives at the guidance destination. Predict. Note that the estimated arrival time is preferably predicted using travel time of each link constituting the guide route, traffic information acquired from the VICS center, and the like.

  Thereafter, in S <b> 4, the CPU 41 acquires, from the weather information center 19, information predicting the weather at the estimated arrival time of the area including the guidance destination (hereinafter referred to as weather prediction information). Here, the weather prediction information may be information that specifically specifies the weather such as “sunny”, “cloudy”, “rain”, “snow”, or may be information that specifies the probability of precipitation.

  Next, in S5, the CPU 41 determines whether the weather at the guidance destination at the estimated arrival time is a weather that requires rain gear, based on the weather prediction information acquired in S4. For example, when the weather prediction information is information that specifically specifies the weather such as “sunny”, “cloudy”, “rain”, “snow”, etc., the weather at the guidance destination at the estimated arrival time is “rain”. Or “snow”, it is determined that the weather requires rain gear. Further, when the weather prediction information is information for specifying the probability of precipitation, it is determined that the weather requires rain gear when the precipitation probability of the guidance destination at the estimated arrival time is a predetermined value (for example, 50%) or more. To do.

  When it is determined that the weather at the guidance destination at the estimated arrival time is the weather that requires rain gear (S5: YES), the process proceeds to S6. On the other hand, if it is determined that the weather at the guidance destination at the estimated arrival time is not a weather that requires rain gear (S5: NO), it is determined that there is no need to provide rain gear guidance, and rain gear guidance is performed. The rain gear guidance processing program is terminated without any further processing.

  In S <b> 6, the CPU 41 acquires facility information related to the facility set as the guidance destination in S <b> 1 from the map information DB 31. Specifically, the genre of the facility, the position coordinates, the dependency relationship between the facilities, information on the presence or absence of the roof (see FIG. 2), and the like are acquired.

  Next, in S7, the CPU 41 determines whether or not the facility set as the guidance destination in S1 is a covered facility based on the facility information acquired in S6. Examples of the covered facility include an aquarium, a department store, and a multi-story parking lot. Examples of facilities without a roof include a park, an amusement park, and a flat parking lot.

  If it is determined that the facility set as the guidance destination is a covered facility (S7: YES), it is determined that it is not necessary to provide guidance regarding rain gear regardless of the weather condition. The rain gear guidance processing program is terminated without performing guidance. On the other hand, when it is determined that the facility set as the guidance destination is a facility without a roof (S7: NO), the process proceeds to S8.

  Subsequently, in S8, the CPU 41 determines that the facility set as the guidance destination in S1 is a parking lot based on the facility information acquired in S6, and the parking lot belongs to another facility in the vicinity. It is determined whether it is a car park (so-called partner parking lot).

  If it is determined that the facility set as the guidance destination is a parking lot and the parking lot belongs to another facility in the vicinity (S8: YES), the process proceeds to S9. To do. On the other hand, if the facility set as the guidance destination is not a parking lot, or if it is determined that the facility is not a parking lot belonging to other nearby facilities even if it is a parking lot (S8: NO), It is determined that it is necessary to provide guidance on the process, and the process proceeds to S11.

  In S9, the CPU 41 calculates the distance from the parking lot set as the guidance destination in S1 to the facility to which the parking lot belongs based on the facility information acquired in S6. Note that the calculated distance may be a straight line distance or a road distance.

  Next, in S10, the CPU 41 determines whether or not the distance from the parking lot to the facility calculated in S9 is a predetermined distance or more (for example, 300 m or more).

  If it is determined that the distance from the parking lot calculated in S9 to the facility is equal to or greater than a predetermined distance (S10: YES), a rain gear is required for moving from the parking lot where the vehicle is parked to the facility. Therefore, it is determined that it is necessary to provide guidance regarding rain gear, and the process proceeds to S11. On the other hand, if it is determined that the distance from the parking lot calculated in S9 to the facility is less than the predetermined distance (S10: NO), rain gear is required for moving from the parking lot where the vehicle is parked to the facility. Therefore, it is determined that it is not necessary to provide guidance regarding rain gear regardless of the weather condition, and the rain gear guidance processing program ends without performing guidance regarding rain gear.

  In S11, the CPU 41 provides guidance regarding rain gear. Specifically, the speaker 16 outputs a voice saying “rain is expected. Please bring rain gear with you”. An umbrella mark may be displayed near the destination of the map image displayed on the liquid crystal display 15. As a result, the user can grasp that rain gear is required after getting off the vehicle at the destination, and can carry the rain gear and get off the vehicle at the destination.

  Further, the guidance process of S11 may be performed not when the destination is set but when the vehicle arrives at the guidance destination. Specifically, the CPU 41 determines whether or not the vehicle has arrived at the guidance destination based on the current position of the vehicle detected by the current position detection unit 11 and the facility information acquired in S6. And when it determines with the vehicle having arrived at the guidance destination, guidance regarding the rain gear of said S11 is performed. As a result, the user can get off the vehicle carrying the rain gear without leaving the rain gear in the car. The guidance process of S11 may be performed at both the timing when the destination is set and the time when the vehicle arrives at the guidance destination. Further, when the guidance process of S11 is performed when the vehicle arrives at the guidance destination, it is desirable to obtain the weather forecast information when it arrives at the destination in order to obtain newer weather forecast information. .

As explained in detail above, in the navigation device 1, the travel guidance method by the navigation device 1, and the computer program executed by the navigation ECU 13 of the navigation device 1, the guidance route to the destination of the vehicle is set ( S2), predicting the estimated arrival time of the vehicle to the destination (S3), obtaining weather forecast information of the destination at the predicted arrival time (S4), and determining that the destination weather at the estimated arrival time is raining When it is determined that the weather is necessary and it is determined that the facility set as the destination is not a covered facility, guidance on rain gear is provided (S11), so that the vehicle position when the occupant gets off the vehicle (I.e., by considering the surrounding environment of the destination), whether the passenger who got off the vehicle at the destination needs rain gear or not It is possible to determine the. As a result, it is possible to provide the user with guidance regarding rain gear at a necessary and appropriate timing.
In addition, when the facility set as the destination is a parking lot, when the distance from the parking lot set as the destination to the facility to which the parking lot belongs is a predetermined distance or more, guidance regarding rain gear is given ( Since S11), particularly when the destination is a parking lot, it is possible to accurately determine whether or not an occupant who gets off the vehicle needs rain gear. In other words, even if the weather requires rain gear, if the travel distance from the parking lot where the vehicle is parked to the facility is short, the passenger who got off the vehicle does not need rain gear to travel to the facility. It is possible to appropriately consider the situation.
In addition, when the guidance regarding rain gear (S11) is given when the destination is set, the rain gear guidance necessary after getting off at the destination in advance when the vehicle starts traveling to the destination. Can be done. As a result, the rain gear can be reliably carried in the vehicle in a situation where the rain gear is required.
Furthermore, when the guidance regarding rain gear (S11) is given when it is determined that the vehicle has arrived at the destination, the rain gear guidance required after the vehicle has arrived at the destination is displayed. Can be done. As a result, the user can reliably carry the rain gear without leaving the rain gear in the vehicle in a situation where the rain gear is required.

Note that the present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the scope of the present invention.
For example, in this embodiment, as guidance regarding the rain gear performed in S11, guidance for instructing the user to carry the rain gear is performed, but other guidance may be performed. For example, you may guide only that there is a possibility that it will rain. Moreover, it is good also as a structure which searches and guides the facility with a roof near a guidance destination.

  In the present embodiment, the facility information is stored as the dependency information between the facilities, but the dependency relationship between the facilities may not be stored. In that case, it is desirable that the facility set as the final destination and the facility set as the guidance destination are estimated to have a master-slave relationship and the determination process of S8 is performed.

  Further, in this embodiment, when the facility set as the destination is a parking lot, when the distance from the parking lot set as the destination to the facility to which the parking lot belongs is a predetermined distance or more, In the case where the facility to which the parking lot belongs is a facility without a roof, the distance from the parking lot set as the destination to the facility to which the parking lot belongs is predetermined. You may comprise so that the guidance regarding rain gear may be performed even if it is less than a distance.

  In this embodiment, an example in which the present invention is applied to the navigation apparatus 1 has been described. However, the present invention can also be applied to a mobile terminal such as a mobile phone, a personal computer, or the like.

1 Navigation device 13 Navigation ECU
31 Map information DB
41 CPU
42 RAM
43 ROM

Claims (5)

Destination setting means for setting a facility as a destination;
An arrival time predicting means for predicting an estimated arrival time when the vehicle arrives at the destination;
Weather prediction information acquisition means for acquiring weather prediction information of the destination at the estimated arrival time predicted by the arrival time prediction means;
Weather determination means for determining whether or not the weather at the destination at the estimated arrival time is a weather that requires rain gear, based on the weather prediction information acquired by the weather information acquisition means;
Facility information acquisition means for acquiring facility information relating to the facility set at the destination;
Based on the facility information acquired by the facility information acquisition unit, a roof determination unit that determines whether the facility set as the destination is a covered facility;
The weather determination means determines that the weather at the destination at the estimated arrival time is a weather that requires rain gear, and the roof determination means determines that the facility set as the destination is not a covered facility. Rain gear guiding means for performing guidance on rain gear when
In the case where the facility set as the destination is a parking lot, the rain gear guide means, when the distance from the parking lot set as the destination to the facility to which the parking lot belongs is a predetermined distance or more. A travel guidance apparatus for performing guidance on the rain gear.   The travel guidance apparatus according to claim 1, wherein the rain gear guidance means performs guidance regarding rain gear when the destination is set by the destination setting means. Arrival determination means for determining whether or not the vehicle has arrived at the destination;
3. The travel guidance according to claim 1, wherein the rain gear guidance means performs rain gear guidance when it is determined by the destination arrival determination setting that the vehicle has arrived at the destination. apparatus. A destination setting step for setting the facility as a destination;
An arrival time prediction step for predicting an estimated arrival time at which the vehicle arrives at the destination;
A weather prediction information acquisition step of acquiring weather prediction information of the destination at the estimated arrival time predicted by the arrival time prediction step;
A weather determination step of determining whether or not the weather at the destination at the estimated arrival time is a weather that requires rain gear, based on the weather prediction information acquired by the weather information acquisition step;
A facility information acquisition step of acquiring facility information relating to the facility set at the destination;
Based on the facility information acquired by the facility information acquisition step, a roof determination step of determining whether the facility set as the destination is a covered facility;
The weather determination step determines that the weather at the destination at the estimated arrival time is a weather that requires rain gear, and the roof determination step determines that the facility set as the destination is not a covered facility. A rain gear guidance step for providing guidance regarding rain gear,
In the rain gear guidance step, when the facility set at the destination is a parking lot, the distance from the parking lot set at the destination to the facility to which the parking lot belongs is a predetermined distance or more. A travel guidance method characterized by performing guidance on the rain gear. On the computer,
Destination setting function to set the facility as the destination,
An arrival time prediction function for predicting an arrival time at which a vehicle arrives at the destination;
A weather prediction information acquisition function for acquiring weather prediction information of the destination at the estimated arrival time predicted by the arrival time prediction function;
A weather determination function for determining whether the weather at the destination at the estimated arrival time is a weather that requires rain gear, based on the weather prediction information acquired by the weather information acquisition function;
A facility information acquisition function for acquiring facility information about the facility set at the destination;
Based on the facility information acquired by the facility information acquisition function, a roof determination function for determining whether the facility set as the destination is a covered facility,
The weather determination function determines that the weather at the destination at the estimated arrival time is a weather that requires rain gear, and the roof determination function determines that the facility set as the destination is not a covered facility. Rain gear guidance function that provides guidance on rain gear,
A computer program that causes a processor to execute
When the facility set for the destination is a parking lot, the rain gear guidance function is used when the distance from the parking lot set for the destination to the facility to which the parking lot belongs is a predetermined distance or more. A computer program for providing guidance on the rain gear.

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