JP2012127777A - Navigation device and charging facility retrieval method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigation device and a charging facility retrieval method capable of reducing a risk of power deficiency due to the no residual capacity of on-vehicle battery before arriving at the charging facility.SOLUTION: Based on map data including own home information showing a position of user's own home and charging facility information showing a position of the charging facility for charging an on-vehicle battery which is a driving power source of the vehicle, the charging facility is retrieved by regarding the own home as the charging facility and arranging the own home to be included in the retrieval result. As the retrieval result of the charging facility, distances from a current position of the own vehicle to the positions of the charging facilities shown as the retrieval result including the own home are respectively calculated based on the own home information and the map data, and the charging facilities shown as the retrieval result are displayed on a display unit 160 together with the calculated distances, to provide to the user more useful retrieval result also including the own home for preventing the power deficiency of the on-vehicle battery.

Description

  The present invention relates to a navigation device and a charging facility search method, and is particularly suitable for use in a navigation device having a function of searching for a facility belonging to a facility genre designated by a user.

  In recent years, an electric vehicle or a plug-in hybrid vehicle (hereinafter referred to as an electric vehicle or the like) equipped with an in-vehicle battery that can be charged by an external power source has attracted attention in terms of fuel efficiency and environmental protection. However, in an electric vehicle or the like, the storage performance of the in-vehicle battery is in a developing stage, and the travelable distance is shorter than that of a gasoline vehicle, so that the in-vehicle battery needs to be charged frequently. Therefore, a navigation device mounted on an electric vehicle or the like is required to have a function of searching for a charging facility capable of charging a vehicle-mounted battery as an indispensable function. This function is provided by a genre search function and a peripheral facility search method that a conventional navigation apparatus has.

  The genre search function is a function for searching for a facility belonging to a facility genre designated by the user from a plurality of predetermined facility genres (for example, convenience stores, parking lots, gas stations, banks, public facilities, etc.). . The peripheral facility search function is a function for searching for facilities in the vicinity of the host vehicle among facilities belonging to the facility genre designated by the user. That is, when the user selects a desired facility genre from a plurality of facility genres, the navigation device searches for a facility belonging to the selected facility genre and displays the result on the screen. . When a charging facility is selected as a facility genre and searched, the search results include, for example, the charging facility name, the distance from the own vehicle position, and the direction from the own vehicle position as a list in order from the nearest vehicle position. Is displayed.

  In addition, the technique which acquires the positional information on the charging point where the vehicle-mounted battery was charged, associates the charging point with the positional information, and registers it in the map database as a chargeable point is proposed (for example, Patent Document 1). See). In addition, a technique has been proposed in which a location when charging is performed is registered as a permanent location of the car navigation system (see, for example, Patent Document 2).

JP 2010-101854 A JP 2002-62156 A

  However, the number of charging facilities for charging in-vehicle batteries is still in widespread use, and there are still few. For this reason, even if the charging facility is searched by the genre search function or the surrounding facility search function, the possibility that the charging facility near the current position of the host vehicle is searched is not high. Therefore, there is a problem that there is a high risk that the remaining capacity of the vehicle-mounted battery runs out before reaching the searched charging facility, causing an electric shortage.

  The present invention has been made to solve such a problem, and an object thereof is to reduce the risk of running out of electric power due to the remaining capacity of an on-vehicle battery being lost before arriving at a charging facility. To do.

  In order to solve the above-described problem, in the present invention, a map including home information indicating the position of the user's home and charging facility information indicating the position of a charging facility for charging a vehicle-mounted battery serving as a power source of the vehicle. Based on the data, the home is regarded as a charging facility, and the charging facility is searched such that the home is included in the search results. Then, based on the search result of the charging facility, the home information and the map data, the distance from the current position of the own vehicle to the position of the charging facility indicated as the search result including the home is calculated and shown as the search result. The charging facility is displayed on the display unit together with the calculated distance.

  According to the present invention configured as described above, a search result searched assuming that the home is a charging facility is displayed together with the distance from the current position of the host vehicle to the position of the charging facility (including the home). . In the first place, a user who owns an electric vehicle or the like is likely to have a charging facility at home. Depending on the current position of the vehicle, the distance to the home (charging facility) may be more than the distance to the charging facility other than the home. May be shorter. In this case, the user sees the display result, so that it is not necessary to use the electricity of the vehicle-mounted battery when going to the home (charging facility) rather than going to the charging facility other than home, so there is a risk of causing an electric shortage. It is possible to grasp that there are few. In other words, compared to conventional navigation devices, it is possible to provide users with more useful information to prevent the in-vehicle battery from running out of electricity, and the remaining capacity of the in-vehicle battery runs out before it reaches the charging facility. The risk of missing is reduced.

It is a block diagram which shows the structural example of the navigation system provided with the navigation apparatus by 1st Embodiment. It is a figure which shows the example of a display of the charge facility search result screen by 1st Embodiment. It is a flowchart which shows the example of charging facility search operation | movement by the navigation apparatus of 1st Embodiment. It is a block diagram which shows the structural example of the navigation system provided with the navigation apparatus by 2nd Embodiment. It is a flowchart which shows the example of charging facility search operation | movement by the navigation apparatus of 2nd Embodiment.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration example of a navigation system 120 including a navigation device 100 according to the first embodiment. As shown in FIG. 1, the navigation system 120 includes an operation unit 140 and a display 160 (corresponding to the display unit of the present invention) in addition to the navigation device 100.

  The operation unit 140 is used by the user to set various information on the navigation device 100 and perform various operations, and includes an input device such as a touch panel or a remote controller. The display 160 displays various screens generated by the navigation device 100.

  Next, the functional configuration of the navigation device 100 will be described. As illustrated in FIG. 1, the navigation device 100 includes an operation reception unit 200, a vehicle type information storage unit 220, a vehicle type information acquisition unit 240, a home information storage control unit 260, a home information storage unit 280, a map data storage unit 300, a current position. A detection unit 320, a vehicle type determination unit 340, a charging facility search unit 360, a distance calculation unit 380, a charging facility search result screen generation unit 400, and a display control unit 420 are configured.

  The operation reception unit 200 receives an operation for setting the type of the host vehicle via the operation unit 140. When the operation reception unit 200 receives an operation for setting the type of the host vehicle, the operation reception unit 200 outputs the vehicle type information that specifies the type of the host vehicle to the vehicle type information storage unit 220. Further, the operation reception unit 200 receives an operation for setting the position of the user's home via the operation unit 140. When the operation receiving unit 200 receives an operation for setting the position of the user's home, the operation receiving unit 200 notifies the home information storage control unit 260 to that effect. Further, the operation reception unit 200 receives an operation for requesting a search for a charging facility capable of charging a vehicle-mounted battery that can be charged by an external power source via the operation unit 140. When the operation reception unit 200 receives an operation for requesting a search for a charging facility, the operation receiving unit 200 notifies the vehicle type information acquisition unit 240 and the charging facility search unit 360 to that effect.

  The vehicle type information storage unit 220 stores the vehicle type information output from the operation reception unit 200. The vehicle type information includes information specifying whether the host vehicle corresponds to a gasoline vehicle, an electric vehicle, or a plug-in hybrid vehicle.

  The vehicle type information acquisition unit 240 acquires vehicle type information from the vehicle type information storage unit 220 and outputs the vehicle type information to the vehicle type determination unit 340 when receiving a notification from the operation reception unit 200 that an operation requesting a search for a charging facility has been received. .

  When the home information storage control unit 260 receives a notification from the operation receiving unit 200 that an operation for setting the user's home position has been received, the home information storage control unit 260 generates home information indicating the home position, and the generated home information. Is stored in the home information storage unit 280.

  The map data storage unit 300 stores map data. The map data includes road data representing roads on the map, and road facility data representing various facilities adjacent to the roads in addition to road data used for map display, route search, and the like. The road data is composed of data relating to links obtained by finely dividing roads and lanes, and data relating to nodes corresponding to points at both ends of each link (including points where a plurality of roads such as intersections and branches intersect).

  The facility data includes at least facility type data indicating the type of facility, facility name data indicating the name of the facility, and facility position data indicating the position of the facility for each facility. The type of facility includes a charging facility for charging a vehicle-mounted battery serving as a power source for the vehicle. The facility data corresponds to the charging facility information of the present invention.

  The current position detection unit 320 is stored in the map data storage unit 300 and information indicating the longitude and latitude of the host vehicle acquired by an autonomous navigation sensor or a GPS receiver (not shown) connected to the navigation device 100. The current position of the vehicle on the map is detected based on the map data.

  When the vehicle type information is output from the vehicle type information acquisition unit 240, the vehicle type determination unit 340 determines whether the host vehicle uses an in-vehicle battery as a power source based on the vehicle type information. In the present embodiment, the vehicle type determination unit 340 determines that the host vehicle uses the in-vehicle battery as a power source when the vehicle type information includes information indicating that the host vehicle corresponds to an electric vehicle or a plug-in hybrid vehicle. To do. In addition, the vehicle type determination unit 340 determines that the vehicle does not use a vehicle-mounted battery as a power source when the vehicle type information includes information indicating that the vehicle is a gasoline vehicle. Then, the vehicle type determination unit 340 notifies the charging facility search unit 360 of a determination result as to whether or not the host vehicle uses the in-vehicle battery as a power source.

  When the charging facility search unit 360 receives a notification from the operation receiving unit 200 that an operation requesting a search for a charging facility has been received, the determination result that the own vehicle uses a vehicle-mounted battery as a power source is a vehicle type determination. When notified from the section 340, the home is regarded as a charging facility, and the charging facility is searched based on the home information and the map data so that the home is included in the search results. Specifically, the charging facility search unit 360 searches for a charging facility based on the facility data included in the map data stored in the map data storage unit 300. Then, the charging facility search unit 360 adds the home indicated by the home information stored in the home information storage unit 280 to the charging facility searched based on the map data to obtain a search result. Charging facility search unit 360 then outputs search result information indicating the search result to distance calculation unit 380 and charging facility search result screen generation unit 400.

  On the other hand, when the determination result that the own vehicle does not use the vehicle-mounted battery as a power source is notified from the vehicle type determination unit 340, the charging facility search unit 360 uses the charging facility searched based on the map data as a search result, Search result information indicating the search result is output to the distance calculation unit 380 and the charging facility search result screen generation unit 400.

  Based on the search result information output from the charging facility search unit 360, the home information stored in the home information storage unit 280, and the map data stored in the map data storage unit 300, the distance calculation unit 380 The distance from the current position detected by the detection unit 320 to the position of the charging facility indicated as the search result by the charging facility search unit 360 is calculated, and distance information indicating the calculated distance is calculated as a charging facility search result screen generation unit. Output to 400. Note that the home information is used for calculating the distance only when the home is added to the search result by the charging facility search unit 360.

  The charging facility search result screen generation unit 400 includes search result information output from the charging facility search unit 360, home information stored in the home information storage unit 280, map data and distance stored in the map data storage unit 300. Based on the distance information output from the calculation unit 380, the charging facilities shown as the search result by the charging facility search unit 360 are listed on the display 160 in the order of short distance from the current position along with the distance calculated by the distance calculation unit 380. Charging facility search result screen data for display is generated. Charging facility search result screen generation unit 400 then outputs the generated charging facility result screen data to display control unit 420. The display control unit 420 controls the display 160 to display a charging facility result screen based on the charging facility result screen data output from the charging facility search result screen generation unit 400.

  FIG. 2 shows a display example of the charging facility search result screen 500 according to the first embodiment. Reference numerals 520, 540, 560, 580, and 600 are charging facility search result information indicating charging facilities indicated as search results by the charging facility search unit 360. Each charging facility search result information includes charging facility name information indicating the name of the charging facility, charging facility direction information indicating the direction of the charging facility viewed from the current position, and charging facility distance information indicating the distance from the current position to the charging facility. Is included. The charging facility search result information 520, 540, 560, 580, 600 is displayed in a list in ascending order of the distance from the current position to the charging facility. Reference numeral 620 denotes a charging facility peripheral map, and charging facility search result information selected by a user operation on the operation unit 140 among the charging facility search result information 520, 540, 560, 580, 600 (in the example of FIG. 2, the charging facility The surrounding map of the charging facility corresponding to the search result information 520) is shown.

  The charging facility name information, the charging facility direction information, and the charging facility distance information included in the charging facility search result information 520 are “home”, “↑ (north direction)”, and “70 m”, respectively, as shown in FIG. . In addition, the charging facility name information, the charging facility direction information, and the charging facility distance information included in the charging facility search result information 540 include “Times ●●●”, “← (westward direction)”, and “ “5 km”.

  The charging facility name information, the charging facility direction information, and the charging facility distance information included in the charging facility search result information 560 are “XX temporary parking lot” and “↓ (south direction)” as shown in FIG. And “10 km”. The charging facility name information, charging facility direction information, and charging facility distance information included in the charging facility search result information 580 are “Times □□□”, “→ (Eastern direction)” and “East direction”, respectively, as shown in FIG. “15 km”. Further, the charging facility name information, the charging facility direction information, and the charging facility distance information included in the charging facility search result information 600 are “Times ☆☆☆”, “↑ (north direction)” and It is “25 km”.

  The display of the charging facility search result screen 500 shown in FIG. 2 allows the user to go to the home (charging facility) rather than to the charging facility other than his / her home, so that he / she does not have to use the electricity of the in-vehicle battery. It can be grasped that there is little risk to cause. Therefore, the risk of running out of electricity due to the remaining capacity of the in-vehicle battery running out before arriving at the charging facility can be reduced.

  Next, the charging facility search operation by the navigation device 100 of the first embodiment will be described. FIG. 3 is a flowchart illustrating an example of a charging facility search operation performed by the navigation device 100 according to the first embodiment. The process of step S100 in FIG. 3 starts when the power supply of the navigation device 100 is activated by a user operation on the operation unit 140. It is assumed that the home information is already stored in the home information storage unit 280.

  First, the operation reception unit 200 determines whether an operation for requesting a search for a charging facility has been received via the operation unit 140 (step S100). If operation accepting unit 200 determines that an operation requesting a search for a charging facility has not been accepted (NO in step S100), the process transitions to step S100.

  On the other hand, when operation accepting unit 200 determines that an operation requesting a search for a charging facility has been accepted (YES in step S100), operation accepting unit 200 notifies that to vehicle type information obtaining unit 240 and charging facility retrieving unit 360. Notify Next, the charging facility search unit 360 searches for a charging facility based on the facility data included in the map data stored in the map data storage unit 300 (step S120).

  Next, the vehicle type determination unit 340 determines whether or not the host vehicle uses an in-vehicle battery as a power source (step S140). Then, if vehicle type determination unit 340 determines that the vehicle uses a vehicle-mounted battery as a power source (YES in step S140), charging facility search unit 360 regards the home as a charging facility, and maps the map data. A search result is added to the charging facility searched based on the home indicated by the home information (step S160). Charging facility search unit 360 then outputs search result information indicating the search result to distance calculation unit 380 and charging facility search result screen generation unit 400. Thereafter, the process transitions to step S180.

  On the other hand, when vehicle type determination unit 340 determines that the vehicle does not use an in-vehicle battery as a power source (NO in step S140), charging facility search unit 360 searches for the charging facility searched based on the map data. As a result, search result information indicating the search result is output to the distance calculation unit 380 and the charging facility search result screen generation unit 400. Thereafter, the process transitions to step S180.

  In step S180, the distance calculation unit 380 uses the current position detection unit 320 based on the search result information, home information (only when home is added to the search result), and map data output from the charging facility search unit 360. The distance from the detected current position to the position of the charging facility indicated as the search result by the charging facility search unit 360 is calculated, and distance information indicating the calculated distance is output to the charging facility search result screen generation unit 400. .

  Next, the charging facility search result screen generation unit 400 includes search result information output from the charging facility search unit 360, home information stored in the home information storage unit 280, and a map stored in the map data storage unit 300. Based on the data and the distance information output from the distance calculation unit 380, the charging facilities indicated as the search result by the charging facility search unit 360 are displayed together with the distances calculated by the distance calculation unit 380 in order from the shortest distance from the current position. Charging facility search result screen data to be displayed as a list in 160 is generated (step S200). Charging facility search result screen generation unit 400 then outputs the generated charging facility result screen data to display control unit 420.

  Finally, the display control unit 420 controls the display 160 to display a charging facility result screen based on the charging facility result screen data output from the charging facility search result screen generation unit 400 (step S220). When the process of step S220 is completed, the navigation device 100 ends the process in FIG.

  As described above in detail, in the first embodiment, the charging facility is searched based on the map data, and the home indicated by the home information is added to the charging facility searched for as a search result. Then, based on the search result of the charging facility, the home information and the map data, the distance from the current position of the own vehicle to the position of the charging facility indicated as the search result including the home is calculated and shown as the search result. The charging facility is displayed on the display 160 together with the calculated distance.

  Users who own electric vehicles are more likely to have a charging facility at home, and depending on the current location of the vehicle, the distance to the home (charging facility) is better than the distance to other charging facilities. May be short. In this case, the user sees the display result, so that it is not necessary to use the electricity of the vehicle-mounted battery when going to the home (charging facility) rather than going to the charging facility other than home, so there is a risk of causing an electric shortage. It is possible to grasp that there are few. In other words, it is possible to provide users with more useful information to prevent the in-vehicle battery from running out of electricity, and reduce the risk of running out of electricity due to the remaining capacity of the in-vehicle battery before reaching the charging facility. Can do.

  In addition, when you go home from your home, you can leave your home (charging facility) even if the distance to the charging facility other than your home is shorter than the distance to your home (charging facility). Since the capacity can be charged directly to the home which is the charging facility without going to the charging facility other than the home, there is no need for an extra detour such as going to the charging facility other than the home.

  In the first embodiment, the charging facilities indicated as the search result by the charging facility search unit 360 are displayed in a list in order from the shortest distance from the current position along with the distance calculated by the distance calculation unit 380. Thereby, the user can easily find a charging facility close to the current position from the list.

  Further, in the first embodiment, only when the vehicle type determination unit 340 determines that the host vehicle uses the in-vehicle battery as a power source, the charging facility searched based on the map data is indicated by the home information. The search results are added to your home. Thereby, it is possible to prevent the search result from including a home that is not a charging facility unnecessarily even when the host vehicle is a gasoline vehicle that does not use an in-vehicle battery as a power source.

  Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a block diagram illustrating a configuration example of a navigation system 120 including the navigation device 100 ′ according to the second embodiment. As shown in FIG. 4, the navigation device 100 ′ includes a charging facility search unit 360 ′ instead of the charging facility search unit 360 of FIG. In FIG. 4, those given the same reference numerals as those shown in FIG. 1 have the same functions, and therefore redundant description is omitted here.

  The charging facility search unit 360 ′ considers that the home is the charging facility when the vehicle type determination unit 340 notifies the vehicle type determination unit 340 that the own vehicle uses a vehicle-mounted battery as a power source. Specifically, the facility type data of “charging facility” is temporarily added to the home information stored in the home information storage unit 280. Then, the charging facility search unit 360 ′ selects the charging facility including the home regarded as the charging facility based on the home information to which the facility type data is added and the map data stored in the map data storage unit 300. The charging facility searched by the search is used as a search result. Charging facility search unit 360 ′ then outputs search result information indicating the search result to distance calculation unit 380 and charging facility search result screen generation unit 400.

  In addition, when the vehicle type determination unit 340 has notified the charging facility search unit 360 ′ that the vehicle type does not use the in-vehicle battery as a power source, the charging facility search unit 360 ′ adds the map data stored in the map data storage unit 300 to the map data. Based on this, the charging facility is searched, and the charging facility searched by that is used as a search result. Charging facility search unit 360 ′ then outputs search result information indicating the search result to distance calculation unit 380 and charging facility search result screen generation unit 400.

  Next, the charging facility search operation by the navigation device 100 ′ of the second embodiment will be described. FIG. 5 is a flowchart showing an example of a charging facility search operation by the navigation device 100 ′ of the second embodiment. The process of step S300 in FIG. 5 starts when the power of the navigation device 100 ′ is activated by a user operation on the operation unit 140.

  First, the operation reception unit 200 determines whether an operation for requesting a search for a charging facility has been received via the operation unit 140 (step S300). If operation accepting unit 200 determines that an operation requesting a search for a charging facility has not been accepted (NO in step S300), the process transitions to step S300.

  On the other hand, when operation receiving unit 200 determines that an operation for requesting a search for a charging facility has been received (YES in step S300), operation receiving unit 200 notifies that to vehicle type information acquisition unit 240 and charging facility searching unit 360. Notify ′. Next, the vehicle type determination unit 340 determines whether or not the own vehicle uses an in-vehicle battery as a power source (step S320). If the vehicle type determination unit 340 determines that the charging vehicle has a vehicle-mounted battery as a power source (YES in step S320), the charging facility search unit 360 ′ regards the home as a charging facility, Based on the home information and the map data, the charging facility including the home regarded as the charging facility is searched. Then, search result information with the charging facility searched as a search result is output to the distance calculation unit 380 and the charging facility search result screen generation unit 400 (step S340). Thereafter, the process proceeds to step S380.

  On the other hand, if vehicle type determination unit 340 determines that the vehicle does not use the vehicle-mounted battery as a power source (NO in step S320), charging facility search unit 360 ′ searches for the charging facility based on the map data. Then, search result information with the charging facility searched as a search result is output to the distance calculation unit 380 and the charging facility search result screen generation unit 400 (step S360). Thereafter, the process proceeds to step S380.

  In step S380, the distance calculation unit 380 obtains the search result information output from the charging facility search unit 360 ′, the home information stored in the home information storage unit 280 (only when the home is regarded as a charging facility), and map data. Based on the map data stored in the storage unit 300, the distances from the current position detected by the current position detection unit 320 to the position of the charging facility indicated as the search result by the charging facility search unit 360 ′ are calculated. Then, the distance information indicating the calculated distance is output to the charging facility search result screen generation unit 400.

  Next, the charging facility search result screen generation unit 400 is stored in the search result information output from the charging facility search unit 360 ′, home information stored in the home information storage unit 280, and the map data storage unit 300. Based on the map data and the distance information output from the distance calculation unit 380, the charging facility indicated as the search result by the charging facility search unit 360 ′ is short in distance from the current position together with the distance calculated by the distance calculation unit 380. Charging facility search result screen data for causing the display 160 to display a list in order is generated (step S400). Charging facility search result screen generation unit 400 then outputs the generated charging facility result screen data to display control unit 420.

  Finally, the display control unit 420 controls the display 160 to display a charging facility result screen based on the charging facility result screen data output from the charging facility search result screen generation unit 400 (step S420). When the process of step S420 is completed, the navigation device 100 ′ ends the process in FIG.

  As described above in detail, in the second embodiment, when it is determined that the own vehicle uses a vehicle-mounted battery as a power source, including the home that is regarded as a charging facility based on home information and map data. The charging facility is searched, and the charging facility searched by that is set as a search result. Also in the second embodiment configured as described above, the same effect as in the first embodiment can be obtained.

  In the second embodiment, the home information obtained by adding the facility type data of “charging facility” may be included in the facility data of the map data. In this case, when it is determined that the host vehicle uses the in-vehicle battery as a power source, the charging facility can be searched for including the home regarded as the charging facility based only on the facility data. Therefore, the access destination of the charging facility search unit 360 ′ is reduced by one, and the charging facility search processing by the charging facility search unit 360 ′ can be simplified.

  Moreover, although the vehicle type information acquisition part 240 demonstrated the example which acquires vehicle type information from the vehicle type information storage part 220 in the said 1st and 2nd embodiment, this invention is not limited to this. For example, the vehicle type information acquisition unit 240 is an internal memory (not shown) of an ECU (Electronic Control Unit) via an in-vehicle LAN such as a CAN (Controller Area Network), a FlexRay, or a LIN (Local Interconnect Network). You may make it acquire the vehicle type information memorize | stored in.

  In the first and second embodiments, when the vehicle type determination unit 340 determines that the host vehicle uses the in-vehicle battery as a power source, the charging facility is searched so that the home is included in the search results. Although an example has been described, the present invention is not limited to this. For example, the user can set in advance whether or not to search for a charging facility so that his / her home is included in the search result, and the charging facility search method is changed depending on the presence / absence of the setting. Also good.

  In addition, each of the first and second embodiments described above is merely an example of a specific example for carrying out the present invention, and the technical scope of the present invention should not be interpreted in a limited manner. It will not be. That is, the present invention can be implemented in various forms without departing from the gist or the main features thereof.

100, 100 'Navigation device 160 Display (display unit)
220 vehicle type information storage unit 240 vehicle type information acquisition unit 280 home information storage unit 300 map data storage unit 320 current position detection unit 340 vehicle type determination unit 360, 360 ′ charging facility search unit 380 distance calculation unit 420 display control unit

Claims (6)

A home information storage unit for storing home information indicating the location of the user's home;
A map data storage unit for storing map data including charging facility information indicating a position of a charging facility for charging a vehicle-mounted battery serving as a power source of the vehicle;
Based on the map data, a current position detection unit that detects the current position of the host vehicle;
A charging facility search unit that regards the home as the charging facility and searches for the charging facility so that the home is included in a search result based on the home information and the map data;
Based on the search result by the charging facility search unit, the home information and the map data, from the current position detected by the current position detection unit to the position of the charging facility indicated as the search result including the home A distance calculation unit for calculating the distances of
A navigation apparatus comprising: a display control unit configured to control a charging facility indicated as a search result by the charging facility searching unit to be displayed on a display unit together with the distance calculated by the distance calculating unit. The navigation device according to claim 1, wherein
The charging facility search unit searches for a charging facility based on the map data, and adds the home indicated by the home information to the charging facility searched thereby to obtain the search result. Navigation device. The navigation device according to claim 1, wherein
The charging facility search unit searches for charging facilities including a home regarded as a charging facility based on the home information and the map data, and sets the charging facility searched thereby as the search result. A featured navigation device. The navigation device according to claim 1, wherein
The display control unit controls the charging facilities indicated as a search result by the charging facility searching unit so that the charging facilities are displayed in a list in order from the shortest distance from the current position together with the distance calculated by the distance calculating unit. A navigation device. The navigation device according to claim 1, wherein
A vehicle type information acquisition unit for acquiring vehicle type information specifying the type of the host vehicle;
A vehicle type determination unit that determines whether or not the host vehicle uses the in-vehicle battery as a power source based on the vehicle type information acquired by the vehicle type information acquisition unit;
The charging facility search unit searches for a charging facility so that the home is included in a search result only when the vehicle type determination unit determines that the host vehicle uses the in-vehicle battery as a power source. A featured navigation device. The charging facility search unit of the navigation device is based on home information indicating the location of the user's home and map data including charging facility information indicating the location of the charging facility for charging the vehicle-mounted battery serving as the power source of the vehicle. A first step of considering the home as the charging facility and searching for the charging facility so that the home is included in a search result;
The distance calculation unit of the navigation device, based on the search result of the first step, the home information and the map data, from the current position of the own vehicle, the charging facility indicated as the search result including the home A second step of calculating the distance to the position respectively;
A third step of controlling the display control unit of the navigation device to display the charging facility indicated as the search result in the first step together with the distance calculated in the second step on the display unit; A charging facility searching method characterized by comprising:

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