1277722 (1) 九、發明說明 【發明所屬之技術領域】 本發明係有關於導引圓環出口的路徑導引裝置等。 【先前技術】 作爲導引圓環出口之導引方法，係已知有專利文件1 所記載之技術。此技術，當對應圓環出口道路之出口編號 Φ 在地圖資料內，則導引該出口編號；當沒有對應圓環出口 道路之出口編號，而是有名稱資訊（例如道路名稱或方向 名稱）在地圖資料中時，則導引該名稱資訊；要是什麼都 沒有，則導引導引對象出口道路是從近入口之第幾個（參 考專利文件1之第2圖）。 [專利文件1]日本特開200 1 -3 1 795 6號公報 【發明內容】 φ 發明所欲解決之課題 然而，從圓環延伸之退出路（出口道路），如果有一 般道路（一車道之道路，或有複數車道但可自由變更車道 的道路等），就也有由以不可通行之分離帶所分離之相同 行進方向複數車道所構成的道路。後者之道路的情況下’ 若駕駛人搞錯從圓環退出之目標車道，則會從圓環退出後 在某個路口無法右轉或左轉，或從圓環退出後無法進入某 個目的地。從而，從圓環延伸之退出路，是由以不可通行 之分離帶所分離之相同行進方向複數車道所構成的道路時 -4 - (2) 1277722 ’則必須無錯誤地導引這些車道。 但是因爲此等道路的各車道是鄰接的，若依上述專利 文件1所記載之導引方法，駕駛人不會了解應該選擇哪條 車道，而有進入不適當之車道之虞。進入不適當之車道時 ’就會造成上述問題。 本發明係考慮此種問題而成者，其目的爲提供一種路 徑導引裝置，當從圓環延伸之退出路，是由以不可通行之 • 分離帶所分離之相同行進方向複數車道所構成的道路時， 則進行駕駛人可輕易特定應退出之車道的導引。 用以解決課題之手段 爲了解決上述課題之路徑導引裝置，係使用於以車輛 移動時之路徑導引裝置，其具備對使用者進行導引之導引 手段；和被設定之導引路徑是通過圓環之路徑時，則以特 定時機於導引手段導引退出路的導引控制手段；和有關由 • 以不可通行之分離帶分離之相同行進方向複數車道所構成 之道路，輸入區別車道之導引資訊的導引資訊輸入手段。 然後導引控制手段，當於導引手段導引之退出路，是由以 不可通行之分離帶分離之相同行進方向複數車道所構成之 道路時，則根據導引資訊輸入手段所輸入之導引資訊，於 導引手段執行區別車道的導引。 在此所謂「導引資訊」，係導引此導引手段時所利用 的資訊，具體來說是指用以導引之畫像資訊或聲音資訊等 -5- (3) 1277722 先前之路徑導引裝置中，即使應退出之圓環道路，是 由以不可通行之分離帶分離之相同行進方向複數車道所構 成之道路時，也沒有進行此種特徵之區別車道的導引。從 而，駕駛人本身必須考慮退出圓環後之進路而自己選擇應 退出的車道。但是本發明之路徑導引裝置，在從圓環延伸 之退出路是以此種車道所構成的道路時，會區別此等車道 進行導引。從而，駕駛人不需要考慮應選擇哪條車道，只 φ 要選擇如導引所示之車道，而可更集中於駕駛人。 然而作爲進行此種區別車道之導引的時機，可以在車 輛進入圓環之後進行。當然也可在進入圓環之前進行，但 是若在進入圓環之後進行，則可更明確地對駕駛人傳達該 導引內容就是從圓環退出者，而減少搞錯退出道路之虞。 但是再進入圓環後立刻退出時導引會來不及，而有到 達退出路入口之前駕駛人還沒有辨識到退出路之虞。因此 當車輛從進入到圓環到退出爲止之時間，是在特定時間以 • 下時’則在進入圓環之前開始導引即可。在此所謂「特定 時間」’係依據導引內容或導引方法或圓環大小等所決定 者；例如若從開始導引到駕駛人理解其內容需要1 0秒， 則將「特定時間」設定在1 0秒以上即可。另外爲了預測 車輛從進入圓環到退出爲止之時間，可以由從近入口到退 出□之距離和車輛之預測速度來算出。若使用此種算出方 法’可較正確地算出車輛從進入圓環到退出爲止的時間。 又’當車輛從進入到圓環到退出爲止之行走距離，是 在特定距離以下時，則在進入圓環之前開始導引即可。在 (4) 1277722 ， 此所謂「特定距離」，係依據導引內容或導引方法或圓環 大小等所決定者；例如設定爲從開始導引到駕駛人理解其 內容之時間點，剛好是向著退出路開始駕駛操作的時間點 即可。 又，當預測往圓環之進入路與退出路之夾角，是在特 定角度以下時，則在進入圓環之前開始導引即可。亦即像 進入圓環之後立刻退出一般，進入路與退出路之夾角較少 φ 時（例如45度以下），有到達退出路之前仍未結束導引 之虞，故避免此種情況的意圖。另外所謂「特定角度」， 係依據導引內容或導引方法或圓環大小等所決定者。 若如此等一般，則即使進入圓環後立即退出，駕駛人 也可在到達退出路之前辨識退出路，而向著退出路進行適 當的駕駛操作。 然而導引控制手段係在區別車道之退出路導引之前， 在進入到圓環之前，於導引手段導引以往圓環之進入路爲 0 基準的退出路方向即可。在此所謂「方向」，係指以駕駛 人本身爲基準而駕駿人可直覺辨認的方向；具體來說，可 想見「右方向」、「左方向」、「直進方向」、「〇點鐘 (例如3點鐘）方向」等。 若成爲如此，則駕駛人可在進入圓環前了解大槪的退 出方向’然後在退出之前得知具體的退出路及退出車道。 亦即藉由兩階段導引退出車道，駕駛人可更順利地辨識退 出路及退出車道。 又作爲導引手段之具體構造，可具備顯示畫像之顯示 (5) 1277722 手段，亦可具備輸出聲音之聲音輸出手段，亦可具備此等 顯示手段與聲音輸出手段雙方。導引手段具備顯示手段時 ’導引控制手段，係藉由於顯示手段顯示區別車道的導引 圖，來執行導引即可。如此一來，使用者只要瞥一眼就可 掌握導引內容。 又導引手段具備聲音輸出手段時，導引控制手段，係 藉由於聲音輸出手段輸出區別車道的導引聲音，來執行導 Φ 引即可。如此一來，使用者可在看著外界景色之狀態下掌 握導引內容。 又，可使上述任一項所記載之路徑導引裝置中工作爲 導引控制手段的程式，於內裝載路徑導引裝置之電腦來執 行。如此一來，例如於軟碟片、光磁碟片、CD-ROM、硬 碟、ROM、RAM等電腦可讀取之記錄媒體記錄程式，配 合必要將該程式載入電腦並啓動，藉此使電腦工作爲路徑 導引裝置之導引控制手段。又程式亦可使用網路等來流通 0 ，故可輕易提高路徑導引裝置的功能。 【實施方式】 以下使用圖示說明適用本發明之實施方式。另外，本 發明之實施方式並不限定於以下任一個實施方式，在屬於 本發明之技術範圍下採用了各種型態。 [構造及動作之說明] 第1圖，係表示組入了本發明路徑導引裝置所具有之 -8- 1277722 · (6) 功能之導航裝置20其槪略構造的方塊圖。 導航裝置20係具備裝載於車輛，檢測出車輛目前位 置的位置檢測器2 1 ;和用以從使用者輸入各種指示的操 作開關群22 ;和與操作開關群22同樣可輸入各種指示， 與導航裝置20分開之遙控終端（以下稱爲遙控器）23a ; 和從遙控器23a輸入訊號之遙控感測器23b ;和連接於口 袋通訊網等，與外部進行通訊的外部通訊機24 ;和從記 φ 錄有地圖資料或聲音資料之地圖記憶媒體，輸入資料的地 圖資料輸入器25;和用以進行地圖或各種資訊之顯示的 顯示部26;和用以輸出各種導引聲音的聲音輸出部27; 和輸出依據利用者所發出之聲音之電性訊號的麥克風28 ;和控制上述位置檢測器21、操作開關群22、遙控器 23a、遙控感測器23b、外部通訊機24、地圖資料輸入器 25、顯示部26、聲音輸出部27的控制部29。 位置檢測器21，係具備從GPS ( Global Positioning φ System全球定位系統）用之人造衛星，經由未圖示之 GPS天線收訊電波，輸出該收訊訊號的GPS收訊機21a ; 和檢測出施加於車輛之旋轉運動大小的，陀螺儀2 1 b ;和 用以從車輛前後方向之加速度檢測出行走距離的，距離感 測器21c。然後控制部29依據來自此等感測器21a〜21c 之輸出訊號，算出車輛之位置、方位、速度等。另外，依 據來自GPS收訊機21a之訊號求出目前位置的方式雖然 有各種方式，但是可以是單獨測位方式、相對測位方式等 任一種° -9 - (7) 1277722 · 操作開關群22，係由與顯示部26之顯示面一體構成 的觸控面板，及設置在顯示部26周圍之機械式按鍵等所 構成。另外，觸控面板與顯示部26係被層積一體化’觸 控面板雖然有感壓方式、電磁感應方式、靜電容量方式、 或組合此等之方式等，但是使用任一種都可以。 外部通訊機24，係經由設置於路邊之光信標或電波 信標等，從VICS之資訊中心取得事故資訊或塞車資訊等 •。 地圖資料輸入器25，係用以輸入記憶於未圖示之地 圖資料記憶媒體（例如硬碟或DVD _ROM等）之各種資料 的裝置。地圖資料記憶媒體中，記憶有地圖資料（節點資 料、連結資料、收費資料、背景資料、道路資料、名稱資 料、標記資料、路口資料、設施資料等），導引用聲音資 料，聲音辨識資料等。另外，關於由以不可通行之分離帶 分離之相同行進方向複數車道所構成之道路，係對每個車 • 道分配連結資料或導引用聲音資料。 顯示部2 6，係彩色顯示裝置，可使用液晶顯示器、 有機EL·顯τπ：器、CRT等任一種。顯示部26之顯示畫面 ，可將以位置檢測器2 1所檢測出之車輛目前位置，和以 地圖資料輸入器25所輸入之地圖資料，與所特定出來表 示目前所在地的標記、到目的地爲止之引導路徑、名稱、 路標、各種設施之標記等附加資料，加以重疊顯示。 聲音輸出部27，可輸出由地圖資料輸入器25所輸入 之設施導引或各種導引的聲音。 -10- 1277722 · (8) 麥克風28，當使用者輸入聲音（發話）時，則將依 據該輸入之聲音的電性訊號（聲音訊號），輸入到控制部 29。使用者藉由對此麥克風28輸入各種聲音，可操作導 航裝置2 0。 控制部 29，係主要由 CPU、ROM、RAM、SRAM、 I/O及連接此等構造之匯流排線等所構成之已知微電腦來 構成，依據記憶於ROM及RAM之程式來執行各種處理。 φ 例如執行：以依據來自位置檢測器2 1之各檢測訊號的座 標及行進方向作爲一組，算出車輛目前位置，將經由地圖 資料輸入器2 5讀入之目前位置附近地圖等，顯示於顯示 部2 6的處理；或是根據收容於地圖資料輸入器2 5之地圖 資料，和依照操作開關群22或遙控器23a等之操作而設 定之目的地，算出從目前位置到目的地爲止之最佳路徑的 路徑算出處理；或是將該算出之路徑顯示於顯示部26， 或或於聲音輸出部27輸出爲聲音等，藉此導引路徑的路 φ 徑導引處理等。 其次，在控制部29所執行之處理中，使用第2圖之 流程圖說明本實施力導航裝置20之特徵處理，亦即退出 路導引處理（1 )。此退出路導引處理（1 )，在上述之路 徑導引處理的執行中，係在車輛離圓環之前爲特定距離（ 例如到圓環之前500 m —般，最少是到達圓環近入口之前 必須1 〇秒以上的距離）時，在控制部29開始執行的處理 。又針對先前導航裝置所執行之上述路徑算出處理或路徑 導引處理等，則省略說明。 -11 - 1277722 · (9) 當控制部29開始執行退出路導引處理（1 )時，首先 從在對象圓環內行走時之預測車速，和在對象圓環內之預 測移動距離，求出在圓環內之預測停留時間，判定該預測 停留時間是否在1 〇秒以上（S 1 1 0 )。在此所謂「預測車 速」，係例如使用20 km/h —般的固定數値車速，或之前 通過對象圓環時記憶在控制部29內的車速，或使用目前 爲止數十秒前的平均車速等。又所謂「預測移動距離」， φ 係經由地圖資料輸入器2 5讀入記憶於未圖示之地圖資料 記憶媒體之地圖資料，而使用包含於該地圖資料之資料（ 具體來說係加算表示連結長度之連結距離資料而求出的値 )° 此S 1 1 0中，判斷在圓環內之預測停留時間在1 0秒以 上時（S 1 1 0 : YES )，則判定車輛是否在到圓環進入口爲 止可用1 〇秒到達之位置（S 1 25 )。此判定係從車輛之目 前位置和移動速度，來預測進行。當判定車輛是在到圓環 # 進入口爲止可用10秒到達之位置時（Sl25: YES)，則 導引圓環之退出方向（S130);當判定車輛不在到圓環進 入口爲止可用10秒到達之位置時（S125 : NO )，則反覆 本步驟（S 1 2 5 )。 S 1 3 0中所執行之所謂導引圓環退出方向的處理，係 求出以往圓環之進入方向爲基準的退出方向，大約是左方 向、右方向、前進方向、後進方向之任一個，將求得結果 顯示於顯示部26，同時將求得結果於聲音輸出部27輸出 爲導引聲音的處理。另外，此聲音導引會在10秒內結束 -12- 1277722 · (10) 當S 1 3 0之處理結束後，接著判定車輛是否在到圓環 退出口爲止可用1 0秒到達之位置（S 1 3 5 )。此判定也和 S 125 —樣，從車輛之目前位置和移動速度，來預測進行 。當判定車輛是在到圓環退出口爲止可用1 0秒到達之位 置時（S135 : YES )，則移動至S140之處理；當判定車 輛不在到圓環退出口爲止可用1 0秒到達之位置時（S 1 3 5 :Ν Ο )，則反覆本步驟（S 1 3 5 )。 另一方面，上述S 1 1 0中當判斷在圓環內之預測停留 時間不在1 〇秒以上時（S 1 1 0 : Ν Ο )，則判定車輛是否在 到圓環退出口爲止可用20秒到達之位置（S 1 1 5 )。此判 定也和S125 —樣，從車輛之目前位置和移動速度，來預 測進行。當判定車輛是在到圓環退出口爲止剛好可用20 秒到達之位置時（S1 15 : YES )，則導引圓環退出方向（ S1 20 );當判定車輛是在到圓環退出口爲止要用20秒以 上到達之位置時（S135: NO)，則反覆本步驟（S135) 〇 S120中所執行之所謂導引圓環退出方向的處理，係 和S130所執行之處理相同，求出以往圓環之進入方向爲 基準的退出方向，大約是左方向、右方向、前進方向、後 進方向之任一個，將求得結果顯示於顯示部26，同時將 求得結果於聲音輸出部27輸出爲導引聲音的處理。另外 ，此聲音導引會在10秒內結束。 接著在S140中，判定圓環之退出路是否爲由以不可 -13- 1277722 · (11) 通行之分離帶分離之相同行進方向複數車道所構成的道路 (複合道路）。此判定，係經由地圖資料輸入器2 5讀入 記憶於未圖示之地圖資料記憶媒體之地圖資料，而使用包 含於該地圖資料之資料來進行。判定圓環之退出路爲複合 道路時（S 1 4 0 : YE S )，則進行明確表示應通行構成此複 合道路之車道中哪一條的導引（S150)，而結束本處理（ 退出路導引處理（1 ))。例如將使應選擇之車道以箭頭 φ 與顏色變得更顯眼而構成的導引畫像，顯示於顯示部26 來進行（具體畫面於後敘述）。又，將駕駛人可掌握應選 擇車道之導引聲音，於聲音輸出部27加以輸出。 另一方面，判定圓環之退出路不爲複合道路時（S 1 40 :Ν Ο )，則於顯示部2 6顯示代表應該從圓環內哪個退出 口退出之導引畫像，同時將導引應該從圓環內哪個退出口 退出之於聲音輸出部27加以輸出（S145 )。然後，結束 本處理（退出路導引處理（1 ))。 φ 以上說明退出路導引處理（1 )，而在此說明具體導 引例。 第3圖，係以節點（圖中黑圓圈）與連結（連結圖中 黑圓圏彼此的線）表示的道路示意圖。使用此道路模式圖 ，分爲退出路不是複合道路之情況（第3圖（a ))和退 出路是複合道路之情況（第3圖（b ))來說明。另外以 下說明中，係假設判斷在圓環內之預測停留時間在1 0秒 以上（參考第2圖之S1 10 : YES )，來進行說明。 -14- 1277722 · (12) (1 )退出路不是複合道路之情況 如第3圖（a )之虛線箭頭L1所示，說明導引路徑爲 從道路A通過圓環R，然後穿過道路B之路徑的情況。 首先在道路A上，當車輛到達節點5 1 1 (圓環R之進 入口）之前1 0秒的位置時，於聲音輸出部2 7輸出「即將 由直進方向進入圓環」的聲音。然後於其同時，以重疊地 圖畫像之形式於顯示部26輸出表示與聲音相同內容的顯 φ 示（省略具體例）。另外在此種導引之前，亦可進行事前 導引。例如以聲音例來說，亦可進行「大約〇〇m前方， 即將以直進方向進入圓環，往△△路方向。」的導引。 接著，車輛進入圓環R內，而車輛到達圓環R之進 入口亦即節點513之前10秒的位置時，則於聲音輸出部 27輸出「即將往右方向，往△△路方向。」的聲音。然 後於其同時，以重疊地圖畫像之形式於顯示部26輸出表 示與聲音相同內容的顯示（省略具體例）。 (2 )退出路是複合道路之情況 如第3圖（b )之虛線箭頭L2所示，說明導引路徑爲 從道路A通過圓環R，然後穿過道路C之慢車道C3之路 徑的情況。另外道路C作爲往靠近圓環R方向前進之車 道’係由慢車道C 1和快車道C2所構成；作爲往離開圓 環R方向前進之車道，係由慢車道C3和快車道C4所構 成（快車道C2和快車道C4係共有連結）。 首先在道路A上，當車輛到達節點511 (圓環R之進 -15- (13) 1277722 入口）之前1 〇秒的位置時，於聲音輸出部27輸出「即將 以左方向進入圓環」的聲音。然後於其同時’以重疊地圖 畫像之形式於顯示部26輸出表示與聲音相同內容的顯示 (省略具體例）。另外在此種導引之前，亦可進行事前導 引。例如以聲音例來說，亦可進行「大約〇〇m前方，以 左方向進入圓環，往△△路方向。」的導引。 接著，車輛進入圓環R內，而車輛到達圓環R之進 φ 入口亦即節點5 1 5之前1 0秒的位置時，則於聲音輸出部 27輸出「即將往右方向，請進入慢車道。」的聲音。然 後於其同時，以重疊地圖畫像之形式於顯示部26輸出表 示與聲音相同內容的顯示。在此使用第4圖說明此顯示的 具體例。 第4圖（a)所示之顯示畫面611，左半邊顯示有二 維地圖，右側爲藉由類似三維畫像來放大描繪分歧路口。 右側顯示之畫像係描繪有慢車道與快車道之間的分離帶， φ 以箭頭表示應該前進到慢車道、快車道的任一個。因此駕 駛人可明確了解應該前進到慢車道、快車道的哪一個。 另一方面先前之顯示，係如第4圖（b)所示之顯示 畫面6 1 3來顯示。亦即，即使於右側表示路口之放大畫像 ，也沒有區別表示應前進的車道，故駕駛人會不知道應前 進至哪個車道。 [實施方式之效果] 以上雖說明本實施方式之構造及動作，但若依本實施 -16- 1277722 · (14) 方式之導航系統20，當從圓環之退出路，是由以不可通 行之分離帶分離之相同行進方向複數車道所構成之道路時 ，會區別此等道路來導引（第2圖之S150)，故駕駛人 不用考慮應該選擇哪條車道，只要選擇跟導引一樣的車道 即可。亦即駕駛人可集中於駕駛操作。 又在進入圓環前會導引圓環之退出方向（第2圖之 S130)，進入圓環後會在退出圓環前進行區別車道的導引 φ (第2圖之S150)，故駕駛人藉由首先知道槪要（退出 路方向），然後在退出之前知道詳細（退出車道）的兩階 段，來得知應前進的道路。因此駕駛人可更平順地進行駕 駛操作。 又圓環內停留時間較短，在圓環內來不及導引退出車 道時（第2圖之S1 10 : NO )，因爲在進入圓環前就開始 退出車道之導引，故當然駕駛人可使車輛進入適當車道。 • [其他實施方式] 以下說明其他實施方式。 (甲）上述實施方式中，是否能在圓環中進行退出車 道導引的判斷，係就由在圓環內之預測停留時間是否在 1 0秒以上來進行（第2圖之S 1 1 0 )。但是是否能在圓環 中進行退出車道導引的判斷並不限於這種判斷手法，亦可 藉由在圓環內之預測行走距離是否在例如5 0 m以上來進 行。以下使用第5圖之流程圖，說明使用如此判斷手法之 退出路導引處理的一例退出路導引處理（2)。 -17- 1277722 · (15) 退出路導引處理（2 )係在導引其導引路徑之路徑導 引處理的執行中，當車輛在圓環之前特定距離（例如在圓 環之目U 500 m —*般’最少在到達圓環之目丨j需要1〇秒以上 的距離）時，在控制部29開始執行的處理。 當控制部29開始退出路導引處理（2 )之執行時，首 先判定該預測行走距離是否在50 m以上（S210)。又預 測行走距離，係經由地圖資料輸入器25讀入記憶於未圖 φ 示之地圖資料記憶媒體之地圖資料，而使用包含於該地圖 資料之資料（具體來說係加算表示連結長度之連結距離資 料而求出的値）。 此S2 1 0中，判斷在圓環內之預測行走距離在5 0 m以 上時（S2 10 : YES )，則判定車輛是否在到圓環進入口爲 止50 m之位置（S225 )。此判定係依據由從位置檢測器 2 1所取得之訊號所算出的車輛之目前位置，和經由地圖 資料輸入器2 5而從地圖資料記憶媒體讀入的地圖資料， φ 來判定之。當判定車輛是在到圓環進入口爲止5 0 m之位 置時（S22 5 : YES)，則導引圓環之退出方向（S230 ); 當判定車輛不在到圓環進入口爲止50 m之位置時（S225 :NO)，則反覆本步驟（S225 )。 S 2 3 0中所執行之所謂導引圓環退出方向的處理，係 求出以往圓環之進入方向爲基準的退出方向，大約是左方 向、右方向、前進方向、後進方向之任一個，將求得結果 顯示於顯示部26，同時將求得結果於聲音輸出部27輸出 爲導引聲音的處理。另外’此聲音導引會在1 〇秒內結束 -18- 1277722 · (16) 當S 230之處理結束後，接著判定車輛是否在到圓環 退出口爲止50 m之位置（S23 5 )。此判定也和S225 —樣 ，依據由從位置檢測器21所取得之訊號所算出的車輛之 目前位置，和經由地圖資料輸入器25而從地圖資料記憶 媒體讀入的地圖資料，來判定之。當判定車輛是在到圓環 退出口爲止 50 m之位置時（S23 5 ·· YES )，則移動至 φ S240之處理；當判定車輛不在到圓環退出口爲止50 m之 位置時（S23 5 : NO)，則反覆本步驟（S23 5 )。 另一方面，上述S210中當判斷在圓環內之預測行走 距離不在50m以上時（S210 : NO )，則判定車輛是否在 到圓環退出口爲止1 〇 〇 m之位置（S 2 1 5 )。此判定也和 S 225 —樣，依據由從位置檢測器21所取得之訊號所算出 的車輛之目前位置，和經由地圖資料輸入器2 5而從地圖 資料記憶媒體讀入的地圖資料，來判定之。當判定車輛是 # 在到圓環退出口爲止剛好100 m之位置時（S21 5 : YES ) ，則導引圓環退出方向（S 2 2 0 );當判定車輛是在到圓環 退出口爲止l〇〇m以上之位置時（S235: NO)，則反覆 本步驟（S 2 3 5 )。 S220中所執行之所謂導引圓環退出方向的處理，係 和S23 0所執行之處理相同，求出以往圓環之進入方向爲 基準的退出方向，大約是左方向、右方向、前進方向、後 進方向之任一個。然後將求得結果顯示於顯示部26，同 時將求得結果於聲音輸出部27輸出爲導引聲音的處理。 -19- 1277722 » (17) 另外，此聲音導引會在1 0秒內結束。 接著在S240中，判定圓環之退出路是否爲由以 通行之分離帶分離之相同行進方向複數車道所構成的 (複合道路）。此判定，係經由地圖資料輸入器25 記憶於未圖示之地圖資料記憶媒體之地圖資料，而使 含於該地圖資料之資料來進行。判定圓環之退出路爲 道路時（S240 : YES )，則進行明確表示應通行構成 φ 合道路之車道中哪一條的導引（S250 )，而結束本處 退出路導引處理（2 ))。例如將使應選擇之車道以 與顏色變得更顯眼而構成的導引畫像，顯示於顯示i 來進行。又，將駕駿人可掌握應選擇車道之導引聲音 聲音輸出部27加以輸出。 另一方面，判定圓環之退出路不爲複合道路時（ :NO)，則於顯示部26顯示代表應該從圓環內哪個 口退出之導引畫像，同時將導引應該從圓環內哪個退 φ 退出之於聲音輸出部27加以輸出（S245 )。然後， 本處理（退出路導引處理（2 ))。 以上雖然說明藉由在圓環內之預測行走距離是 50 m以上，來進行是否可僅在圓環內進行退出車道 之判斷的情況，但此種實施方式亦可得到與上述實施 相同的效果。 (乙）接者’說明錯由住圓環之進入路與退出路 角，來進行是否可僅在圓環內進行退出車道導引之判 情況。使用第6圖之流程圖，說明使用如此判斷手法 不可 道路 讀入 用包 複合 此複 理（ 箭頭 β 2 6 ，於 S240 退出 出口 結束 否在 導引 方式 之夾 斷的 之退 -20- (18) 1277722 出路導引處理的一例退出路導引處理（3 )。 退出路導引處理（3 )係在導引其導引路徑之路徑導 引處理的執行中，當車輛在圓環之前特定距離（例如在圓 環之前500 m —般，最少在到達圓環之前需要1〇秒以上 的距離）時，在控制部29開始執行的處理。 當控制部29開始退出路導引處理（3 )之執行時，首 先判定往對象圓環之進入路與退出路的夾角是否在90度 φ 以上（S 3 1 0 )。用於此判定之「往對象圓環之進入路與退 出路的夾角」，係依據記憶於地圖資料記憶媒體之地圖資 料所算出者。具體來說，係藉由進入口節點座標與圓環中 心座標所連結之線段，和退出口節點座標與圓環中心座標 所連結之線段，算出兩者所決定之角度來進行。另外所謂 「90度」的角度，可以由使用者指定，亦可對每個圓環 預先決定。 此S3 10中，判斷往對象圓環之進入路與退出路的夾 φ 角是在90度以上時（S3 10 : YES )，則判定車輛是否在 到圓環進入口爲止用10秒可到達之位置（S3 25 )。此判 定係從車輛之目前位置和移動速度來預測進行。當判定車 輛是在在到圓環進入口爲止用1 0秒可到達之位置時（ S3 25 : YES )，則導引圓環之退出方向（S 3 3 0 );當判定 車輛不在到圓環進入口爲止用1 0秒可到達之位置時（ S 3 25 ： NO )，則反覆本步驟（S325)。 S 3 3 0中所執行之所謂導引圓環退出方向的處理，係 求出以往圓環之進入方向爲基準的退出方向，大約是左方 -21 - (19) 1277722 向、右方向、前進方向、後進方向之任一個，將求得結果 顯示於顯示部26，同時將求得結果於聲音輸出部27輸出 爲導引聲苜的處理。另外，此聲音導引會在10秒內結束 〇 當S3 30之處理結束後，接著判定車輛是否在到圓退 出入口爲止用1 〇秒可到達之位置（S 3 3 5 )。此判定也和 S3 2 5 —樣，從車輛之目前位置和移動速度來預測進行。 φ 當判定車輛是在到圓退出入口爲止剛好用1 0秒可到達之 位置時（S 3 3 5 : YES )，則移動至 S340之處理；當判定 車輛在到圓退出入口爲止要用1 0秒以上到達之位置時（ S3 3 5 ： NO )，則反覆本步驟（S3 3 5 )。 另一方面，上述S3 10中當判斷往對象圓環之進入路 與退出路的夾角是未滿90度時（S3 10 : NO )，則判定車 輛是否在到圓退出入口爲止用20秒可到達之位置（S3 15 )。此判定也和S325 —樣，從車輛之目前位置和移動速 • 度來預測進行。當判定車輛是在到圓退出入口爲止剛好用 20秒可到達之位置時（S3 15 : YES )，則導引圓環退出方 向（S320 );當判定車輛在到圓退出入口爲止要用20秒 以上到達之位置時（S3 3 5 : NO )，則反覆本步驟（S335 )° S320中所執行之所謂導引圓環退出方向的處理’係 和S23 0所執行之處理相同，求出以往圓環之進入方向爲 基準的退出方向，大約是左方向、右方向、前進方向、後 進方向之任一個。然後將求得結果顯示於顯示部26’同 -22- (20) 1277722 時將求得結果於聲音輸出部27輸出爲導引聲音的處理。 另外，此聲音導引會在1 0秒內結束。 接著在S3 40中，判定圓環之退出路是否爲由以不可 通行之分離帶分離之相同行進方向複數車道所構成的道路 (複合道路）。此判定，係經由地圖資料輸入器25讀入 記憶於未圖示之地圖資料記憶媒體之地圖資料，而使用包 含於該地圖資料之資料來進行。判定圓環之退出路爲複合 φ 道路時（S3 40 : YES )，則進行明確表示應通行構成此複 合道路之車道中哪一條的導引（S3 50 )，而結束本處理（ 退出路導引處理（3 ))。例如將使應選擇之車道以箭頭 與顏色變得更顯眼而構成的導引畫像，顯示於顯示部26 來進行。又，將駕駛人可掌握應選擇車道之導引聲音，於 聲音輸出部27加以輸出。 另一方面，判定圓環之退出路不爲複合道路時（S3 40 :NO)，則於顯示部26顯示代表應該從圓環內哪個退出 φ 口退出之導引畫像，同時將導引應該從圓環內哪個退出口 退出之於聲音輸出部27加以輸出（S3 45 )。然後，結束 本處理（退出路導引處理（3 ))。 以上雖然說明藉由往對象圓環之進入路與退出路的夾 角是否在90度以上，來進行是否可僅在圓環內進行退出 車道導引之判斷的情況，但此種實施方式亦可得到與上述 實施方式相同的效果。 (丙）上述實施方式之說明中，作爲表示應該通往構 成複合道路之車道中哪一條的導引聲音例子，雖表示「即 -23- (21) 1277722 將往右方向，請進入慢車道」的導引聲音，但也可以是「 即將往右方向。行進方向道路爲兩車道所構成，請進入面 前側車道。」的導引聲音。亦即說明車道整體構成（「爲 兩車道所構成」），接著說明應該選擇之車道（「請進入 面前側車道」）。車道有更多時，也可以是「即將往右方 向。行進方向道路爲兩線慢車道與兩線快車道所構成，請 進入內側快車道的面前側車道。」的導引聲音。 φ 依據道路來說，有時駕駛人會難以了解從哪裡到哪裡 是行進方向車道，從哪裡到哪裡是對向車道。又有時會有 太多相同方向車道，使駕駛人無法瞬間掌握有幾條車道。 因此若如上述般說明車道構成，之後指示應該選擇之車道 ，則駕駿人可輕易辨識應該選擇的車道。 [與申請專利範圍用語等的對應] 最後，表示上述實施方式用語和申請專利範圍所記載 φ 之用語的對應。地圖資料輸入器25相當於導引資訊輸入 手段，顯示部26相當於導引手段所具備之顯示手段，聲 音輸出部27相當於導引手段所具備之聲音輸出手段，控 制部29相當於導引控制手段。 【圖式簡單說明】 [第1圖]導航裝置之槪略構造圖。 [第2圖]用以說明退出路導引處理（1)之流程圖。 [第3圖]用以說明導引例之道路示意圖。 24- (22) (22)1277722 [第4圖]顯示畫面之一例。 [第5圖]用以說明退出路導引處理（2 )之流程圖 [第6圖]用以說明退出路導引處理（3 )之流程圖 【主要元件符號說明】 20 :導航裝置 2 1 :位置檢測器 21a : GPS收訊機 2 1 b :陀螺儀 2 1 c :距離感測器 22 :操作開關群 23a :遙控器 23b :遙控感測器 24 :外部通訊機 25 :地圖資料輸入機 2 6 :顯示部 27 :聲音輸出部 28 :麥克風 2 9 :控制部 -25-1277722 (1) IX. [Technical Field] The present invention relates to a path guiding device and the like for guiding a ring outlet. [Prior Art] As a guiding method for guiding the exit of the ring, The technique described in Patent Document 1 is known. This technology, When the exit number corresponding to the exit path of the ring is Φ in the map data, Guide the exit number; When there is no exit number corresponding to the exit of the ring road, Instead, when there is name information (such as the road name or direction name) in the map data, Guide the name information; If there is nothing, Then, the guidance guide exit road is the first from the near entrance (refer to FIG. 2 of Patent Document 1). [Patent Document 1] Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. Exit road (exit road) extending from the ring, If there is a road (one lane road, Or a road with multiple lanes but freely changing lanes, etc.) There are also roads consisting of a plurality of lanes in the same direction of travel separated by an inaccessible separation zone. In the case of the latter road ‘If the driver mistakes the target lane exiting from the ring, Will exit from the ring and cannot turn right or left at a certain intersection. You cannot enter a destination after exiting from the ring. thereby, The exit road extending from the ring, When a road consisting of multiple lanes in the same direction of travel separated by an inaccessible separation zone -4 - (2) 1277722 ', these lanes must be guided without error. But because the lanes of these roads are contiguous, According to the guidance method described in the above Patent Document 1, The driver does not know which lane to choose, There is a glimpse into an inappropriate lane. When entering an inappropriate lane, the problem will be caused. The present invention is based on the consideration of such problems, Its purpose is to provide a path guiding device, When exiting the road from the ring, Is a road made up of multiple lanes in the same direction of travel separated by an impassable • separation zone. Then, the driver can easily specify the guidance of the lane that should be exited. Means for solving the problem, in order to solve the above-mentioned problem, the path guiding device It is used for the path guiding device when the vehicle is moving. It has a guiding means for guiding the user; And when the guided path is set through the path of the ring, Then, using a special timing machine to guide the exit control means of the exit road; And a road consisting of multiple lanes of the same direction of travel separated by an inaccessible separation zone, Enter the guidance information input means to distinguish the guidance information of the lane. Then guide the control means, When guided by the guiding means, When it is a road composed of multiple lanes in the same direction of travel separated by an inaccessible separation zone, According to the guidance information input by the guidance information input means, The guidance means separates the guidance of the lane. Here is the so-called "guide information". The information used to guide this guidance, Specifically, it refers to portrait information or sound information for guiding, etc. -5- (3) 1277722 In the previous path guiding device, Even if you should exit the ring road, Is a road made up of multiple lanes in the same direction of travel separated by an inaccessible separation zone. There is also no guidance for distinguishing lanes from this feature. Thus, The driver himself must consider the way out of the ring and choose the lane that should be exited. However, the path guiding device of the present invention, When the exit road extending from the ring is a road formed by such a lane, These lanes will be distinguished for guidance. thereby, The driver does not need to consider which lane to choose. Only φ should choose the lane as indicated by the guide, It can be more focused on the driver. However, as a timing to make such a distinction between lanes, It can be done after the car enters the ring. Of course, it can also be done before entering the ring. But if it is done after entering the ring, It is more clear that the driver is informed that the guide is from the ring exiter. And reduce the mistake of leaving the road. But when you enter the ring and exit immediately, the guide will be too late. The driver did not recognize the exit of the road until the exit of the road. So when the vehicle goes from entering the ring to exiting, It is to start at a specific time and then start guiding before entering the ring. Here, the "specific time" is determined by the content of the guide or the method of guiding or the size of the ring; For example, it takes 10 seconds from the start of the guide to the driver’s understanding of the content. Then set "Specific Time" to 10 or more seconds. In addition, in order to predict the time from the entry of the vehicle to the exit, It can be calculated from the distance from the near entrance to the exit □ and the predicted speed of the vehicle. If such a calculation method is used, the time from when the vehicle enters the ring to when it exits can be calculated relatively accurately. And the distance traveled by the vehicle from entering the ring to exiting, Is below a certain distance, Then start the guide before entering the ring. At (4) 1277722, This so-called "specific distance", It is determined by the content of the guide or the guiding method or the size of the ring; For example, it is set from the start of the guidance to the point in time when the driver understands the content, It is just the time to start the driving operation toward the exit road. also, When predicting the angle between the entry path to the exit ring and the exit path, When it is below a certain angle, Then start the guide before entering the ring. That is, immediately after entering the ring, it will exit normally. When the angle between the entry path and the exit path is less than φ (for example, below 45 degrees), There is no end of the guide before the exit road is reached. Therefore, the intention to avoid this situation. In addition, the so-called "specific angle", It is determined by the content of the guide or the guiding method or the size of the ring. If so, Then exit immediately after entering the ring, The driver can also identify the exit route before reaching the exit route. And proceed to the exit road for proper driving operations. However, the guidance control means is before the exit route guidance of the lane difference. Before entering the ring, The guiding means can guide the direction of the exit path of the previous ring to the zero reference. The so-called "direction" here, Means the direction in which the driver can intuitively identify on the basis of the driver himself; Specifically, I can see the "right direction", "Left direction", "Direct direction", "〇 点 (for example, 3 o'clock) direction, etc. If so, The driver can understand the exit direction of the amnesty before entering the ring' and then know the specific exit route and exit lane before exiting. That is, by exiting the lane with two stages of guidance, The driver can more easily identify the exit route and exit the lane. Also as a specific structure of the guiding means, Can display the display of the portrait (5) 1277722 means, It can also have a sound output method for outputting sound. Both the display means and the sound output means can be provided. When the guiding means is provided with a display means, the guidance control means By displaying a guide map for distinguishing lanes by means of display means, To execute the guide. As a result, The user can grasp the navigation content at a glance. When the guiding means has a sound output means, Guidance and control means, By outputting the guidance sound of the lane difference by the sound output means, To perform the guide Φ lead. As a result, The user can grasp the navigation content while watching the outside scenery. also, A program that can operate as a guidance control means in the path guiding device described in any of the above, It is executed by a computer that loads the path guide. As a result, For example, on a floppy disk, Optical disk, CD-ROM, Hard disk, ROM, Computer-readable recording media recording program such as RAM, It is necessary to load the program into the computer and start it. Thereby, the computer is operated as a guiding control means for the path guiding device. The program can also use the network to circulate 0. Therefore, the function of the path guiding device can be easily improved. [Embodiment] Hereinafter, embodiments of the present invention will be described using the drawings. In addition, Embodiments of the present invention are not limited to any of the following embodiments. Various types are employed in the technical scope of the present invention. [Description of structure and operation] Figure 1, It is a block diagram showing a schematic configuration of a navigation device 20 incorporating the function of the -8-1277722 (6) of the path guiding device of the present invention. The navigation device 20 is mounted on a vehicle. a position detector 2 1 that detects the current position of the vehicle; And an operation switch group 22 for inputting various indications from the user; As with the operation switch group 22, various instructions can be input. a remote control terminal (hereinafter referred to as a remote controller) 23a separate from the navigation device 20; And a remote control sensor 23b that inputs a signal from the remote controller 23a; And connected to the bag communication network, etc. An external communication device 24 that communicates with the outside; And a map memory medium that records map data or sound data from φ. Input map data input device 25; And a display portion 26 for displaying a map or various information; And a sound output portion 27 for outputting various guiding sounds; And outputting a microphone 28 according to the electrical signal of the sound emitted by the user; And controlling the position detector 21, Operating the switch group 22, Remote control 23a, Remote sensor 23b, External communication machine 24, Map data input device 25, Display unit 26, The control unit 29 of the sound output unit 27. Position detector 21, It has an artificial satellite from GPS (Global Positioning φ System). Receiving radio waves via a GPS antenna not shown, a GPS receiver 21a that outputs the received signal; And detecting the magnitude of the rotational motion applied to the vehicle, Gyro 2 1 b ; And to detect the walking distance from the acceleration in the front and rear directions of the vehicle, The distance sensor 21c. Then, the control unit 29 is based on the output signals from the sensors 21a to 21c. Calculate the location of the vehicle, Orientation, Speed, etc. In addition, There are various ways to find the current position based on the signal from the GPS receiver 21a. But it can be a separate positioning method, Relative positioning method, etc. ° -9 - (7) 1277722 · Operation switch group 22, A touch panel integrally formed with the display surface of the display unit 26, And a mechanical button or the like provided around the display unit 26. In addition, The touch panel and the display unit 26 are laminated and integrated. The touch panel has a pressure sensing method. Electromagnetic induction, Electrostatic capacity method, Or combine these methods, etc. But you can use either one. External communication machine 24, It is via a light beacon or radio beacon set on the roadside. Obtain accident information or traffic jam information from the VICS Information Center. Map data input device 25, It is a device for inputting various materials stored in a map data storage medium (such as a hard disk or a DVD _ROM). Map data memory media, Memory has map data (node data, Link information, Fee information, Background information, Road information, Name information, Marking data, Intersection information, Facility information, etc.), Guide the sound data, Sound identification data, etc. In addition, a road formed by a plurality of lanes in the same direction of travel separated by an inaccessible separation zone, It is used to assign link data or guide sound data to each car lane. Display unit 2 6, a color display device, LCD display, Organic EL·display τπ: Device, Any one of CRT and so on. The display screen of the display unit 26, The current position of the vehicle detected by the position detector 21 can be And the map data input by the map data input device 25, And the specific mark indicating the current location, The guide path to the destination, name, Road sign, Additional information such as marking of various facilities, Overlap display. Sound output unit 27, The facility guide or various guided sounds input by the map data input unit 25 can be output. -10- 1277722 · (8) Microphone 28, When the user inputs a voice (speech), The electrical signal (sound signal) based on the input sound will be It is input to the control unit 29. The user inputs various sounds to the microphone 28, The navigation device 20 can be operated. Control unit 29, Mainly by the CPU, ROM, RAM, SRAM, I/O and a known microcomputer composed of bus lines connecting these structures, etc. Various processing is performed in accordance with programs stored in the ROM and RAM. φ For example: Taking a group according to the coordinates and the traveling direction of each detection signal from the position detector 21, Calculate the current location of the vehicle, The map near the current location will be read via the map data input device 2, etc. Displayed in the display unit 26; Or according to the map data contained in the map data input device 2 5 And a destination set according to the operation of the operation switch group 22 or the remote controller 23a, etc. A path calculation process for calculating an optimal path from the current position to the destination; Or displaying the calculated path on the display unit 26, Or the sound output unit 27 outputs a sound or the like. Thereby, the path of the path is guided by the path φ path. Secondly, In the processing executed by the control unit 29, The feature processing of the present force navigation device 20 will be described using the flowchart of Fig. 2, That is to say, the exit guide processing (1). This exit route guidance processing (1), In the execution of the above path guiding process, It is a specific distance before the vehicle leaves the ring (for example, 500 m before the ring, At least a distance of more than 1 second before reaching the ring near the entrance) The processing executed by the control unit 29 is started. Further, the path calculation processing or the path guidance processing executed by the previous navigation device is performed. The description is omitted. -11 - 1277722 (9) When the control unit 29 starts execution of the exit route guidance process (1), First, predict the speed of the car when walking inside the ring of objects, And the predicted travel distance within the object circle, Find the predicted residence time in the ring, It is determined whether the predicted stay time is above 1 〇 (S 1 1 0 ). Here, the "predicted speed", For example, a fixed speed of 20 km/h is used. Or the speed of the vehicle that is stored in the control unit 29 when passing through the object ring, Or use the average speed of dozens of seconds until now. Also called "predicting the moving distance", φ is read into the map data of the map data, which is not shown, via the map data input device 2 5 . And using the data contained in the map data (specifically, the 値 obtained by adding the link distance data indicating the length of the link) ° In this S 1 1 0, When it is judged that the predicted stay time in the ring is above 10 seconds (S 1 1 0 : YES), Then, it is determined whether the vehicle is at the position where the ring entrance port can be reached in 1 second (S 1 25 ). This determination is from the current position and moving speed of the vehicle. To predict the progress. When it is determined that the vehicle is in the position of 10 seconds to reach the ring # entrance port (Sl25: YES), Then guiding the exit direction of the ring (S130); When it is determined that the vehicle is not in the position of 10 seconds to reach the entrance of the ring (S125: NO ), Then repeat this step (S 1 2 5 ). The processing of the so-called guide ring exit direction performed in S 1 3 0, Determine the exit direction of the previous ring as the reference direction. About the left, Right direction, Forward direction, Any one of the backward directions, The obtained result is displayed on the display unit 26, At the same time, the obtained result is output to the sound output unit 27 as a process of guiding the sound. In addition, This sound guide will end in 10 seconds. -12- 1277722 · (10) When the processing of S 1 3 0 is finished, It is then determined whether the vehicle can reach the position reached by 10 seconds (S 1 3 5 ) until it reaches the exit port of the ring. This decision is also the same as S 125. From the current position and speed of the vehicle, To predict the progress. When it is determined that the vehicle is in the position of 10 seconds to reach the exit of the ring (S135: YES), Then move to the processing of S140; When it is determined that the vehicle is not in the position of 10 seconds to reach the exit of the ring (S 1 3 5 : Ν Ο ), Then repeat this step (S 1 3 5 ). on the other hand, In the above S 1 1 0, when it is judged that the predicted stay time in the ring is not more than 1 sec (S 1 1 0 : Ν Ο ), Then, it is determined whether the vehicle can reach the position reached by 20 seconds (S 1 15 5) until it reaches the exit port of the ring. This judgment is also the same as S125. From the current position and speed of the vehicle, Come to predict. When it is determined that the vehicle is just 20 seconds away from the exit of the ring (S1 15 : YES), Then guiding the ring exit direction (S1 20); When it is determined that the vehicle is to reach the position up to 20 seconds or more until the exit port of the ring (S135: NO), Repeating the processing of the so-called guide ring exit direction performed in this step (S135) 〇 S120, The process is the same as that performed by S130. Find the exit direction in which the entry direction of the previous ring is the reference. About the left direction, Right direction, Forward direction, Any one of the backward directions, The obtained result is displayed on the display unit 26, At the same time, the result is obtained by the sound output unit 27 as a process of guiding the sound. In addition, This sound guide will end in 10 seconds. Then in S140, It is determined whether the exit path of the ring is a road (composite road) composed of a plurality of lanes of the same traveling direction separated by a separation belt that cannot pass through -13-1277722 (11). This judgment, The map data stored in the map data memory medium not shown is read via the map data input device 2 5 . It is carried out using the information contained in the map material. When judging that the exit path of the ring is a compound road (S 1 4 0 : YE S), Then, a guide indicating which one of the lanes constituting the composite road should pass is clearly indicated (S150), This process ends (exit road guidance processing (1)). For example, a guide image in which the lane to be selected is made more conspicuous with the arrow φ and the color, Display is performed on the display unit 26 (the specific screen will be described later). also, The driver can grasp the guiding sound of the selected lane. The sound output unit 27 outputs the sound. on the other hand, When it is determined that the exit path of the ring is not a composite road (S 1 40 : Ν Ο ), Then, on the display unit 26, a guide image indicating which exit port should be withdrawn from the ring is displayed. At the same time, the guidance should be exited from the exit port of the ring to the sound output unit 27 for output (S145). then, End this process (exit path guidance processing (1)). φ above indicates the exit route guidance processing (1), Specific examples are described here. Figure 3, A schematic diagram of a road represented by a node (black circle in the figure) and a link (the line connecting the black circles in the figure). Use this road pattern map, It is explained that the exit route is not a composite road (Fig. 3 (a)) and the exit route is a composite road (Fig. 3 (b)). In the following description, It is assumed that the predicted dwell time in the ring is above 10 seconds (refer to S1 10 in Figure 2: YES), To explain. -14- 1277722 · (12) (1) The exit road is not a compound road. As shown by the dotted arrow L1 in Figure 3 (a), Explain that the guiding path is from the road A through the ring R, Then cross the path of the road B. First on the road A, When the vehicle reaches the position of 10 seconds before the node 5 1 1 (the entrance of the ring R), The sound output unit 27 outputs a sound "to enter the ring in the straight direction". Then at the same time, A display indicating the same content as the sound is outputted to the display unit 26 in the form of an overlapping map image (a specific example is omitted). Also before such guidance, It can also be guided beforehand. For example, in the case of sound, Can also be carried out "about 〇〇m front, Will enter the ring in a straight direction, Go to the direction of △△. Guide. then, The vehicle enters the ring R, When the vehicle reaches the entrance of the ring R, that is, 10 seconds before the node 513, Then, the sound output unit 27 outputs "toward the right direction, Go to the direction of △△. "the sound of. Then at the same time, The display unit 26 outputs a display indicating the same content as the sound in the form of an overlapping map image (a specific example is omitted). (2) The exit road is a composite road. As shown by the dotted arrow L2 in Figure 3 (b), Explain that the guiding path is from the road A through the ring R, Then pass through the path of the slow lane C3 of the road C. Further, the road C as a lane advancing toward the ring R direction is composed of a slow lane C 1 and a fast lane C2; As the lane that goes in the direction of leaving the ring R, It is composed of slow lane C3 and fast lane C4 (fast lane C2 and fast lane C4 are connected). First on the road A, When the vehicle reaches the position of node 511 (the entrance of the ring R into the -15- (13) 1277722 entrance), the position of 1 second is The sound output unit 27 outputs a sound "to enter the ring in the left direction". Then, at the same time, a display indicating the same content as the sound is outputted to the display unit 26 in the form of an overlapping map image (a specific example is omitted). Also before such guidance, It can also be guided beforehand. For example, in the case of sound, Can also be carried out "about 〇〇m front, Enter the ring in the left direction, Go to the direction of △△. Guide. then, The vehicle enters the ring R, When the vehicle reaches the entrance of the ring R, the φ inlet is also 10 seconds before the node 5 1 5 , Then, the sound output unit 27 outputs "toward the right direction, Please enter the slow lane. "the sound of. Then at the same time, The display unit 26 outputs a display indicating the same content as the sound in the form of an overlapping map image. A specific example of this display will be described using Fig. 4 herein. Display screen 611 shown in Fig. 4(a), A two-dimensional map is displayed on the left half. On the right side is a magnified depiction of divergent intersections by similar three-dimensional portraits. The portrait shown on the right depicts a separation zone between the slow lane and the fast lane. φ is indicated by an arrow and should advance to the slow lane, Any of the fast lanes. Therefore, the driver can clearly understand that he should advance to the slow lane, Which one of the fast lanes. On the other hand, the previous display, The display screen 6 1 3 shown in Fig. 4(b) is displayed. that is, Even on the right side, it shows a magnified portrait of the intersection. There is no difference between the lanes that should be forwarded. Therefore, the driver will not know which lane to advance to. [Effect of the Embodiment] The structure and operation of the present embodiment will be described above. However, if the navigation system 20 of the manner of -16-1277722 (14) is implemented, When exiting the road from the ring, When it is a road composed of multiple lanes in the same direction of travel separated by an inaccessible separation zone, Will distinguish these roads to guide (S150 in Figure 2), Therefore, the driver does not have to consider which lane should be chosen. Just choose the same lane as the guide. That is, the driver can concentrate on the driving operation. And before entering the ring, it will guide the exit direction of the ring (S130 in Figure 2). After entering the ring, the lane guidance φ (S150 of Figure 2) will be made before exiting the ring. Therefore, the driver knows the main point by first (exiting the direction of the road). Then know the two stages of the detailed (exit lane) before exiting, Come to know the way forward. Therefore, the driver can perform the driving operation more smoothly. In addition, the residence time in the ring is shorter. When there is no time to lead out of the lane in the ring (S1 10 in Figure 2: NO ), Because I started to exit the lane before entering the ring, So of course the driver can get the vehicle into the proper lane. • Other Embodiments Other embodiments will be described below. (a) In the above embodiment, Is it possible to judge the exit of the lane guidance in the ring? This is done by whether the predicted dwell time in the ring is above 10 seconds (S 1 1 0 in Fig. 2). However, the judgment of whether or not to exit the lane guidance in the ring is not limited to this judgment method. It can also be performed by predicting whether the walking distance in the ring is, for example, 50 m or more. The flow chart of Figure 5 is used below. An example of the exit route guidance process (2) using the exit route guidance process of such a judgment method will be described. -17- 1277722 · (15) Exit route guidance processing (2) is in the execution of the path guidance processing for guiding its guidance path, When the vehicle is at a certain distance before the ring (for example, in the case of a circle of U 500 m -*, at least a distance of more than 1 second is required to reach the ring of the ring), The processing executed by the control unit 29 is started. When the control section 29 starts to exit the execution of the route guidance process (2), It is first determined whether or not the predicted walking distance is 50 m or more (S210). Also predict the walking distance, The map data stored in the map data memory medium not shown in Fig. φ is read via the map data input unit 25, The data contained in the map data (specifically, the sum of the link distances indicating the length of the link) is used. In this S2 1 0, When it is judged that the predicted walking distance in the ring is above 50 m (S2 10 : YES), Then, it is determined whether the vehicle is at a position of 50 m to the entrance of the ring (S225). This determination is based on the current position of the vehicle calculated from the signal obtained from the position detector 21. And map data read from the map data storage medium via the map data input device 25, φ to determine it. When it is determined that the vehicle is at a position of 50 m to the entrance of the ring (S22 5: YES), Then guiding the exit direction of the ring (S230); When it is determined that the vehicle is not at the position of 50 m up to the entrance of the ring (S225: NO), Then repeat this step (S225). The so-called guide ring exit direction processing performed in S 2 3 0, Determine the exit direction of the previous ring as the reference direction. About the left, Right direction, Forward direction, Any one of the backward directions, The obtained result is displayed on the display unit 26, At the same time, the obtained result is output to the sound output unit 27 as a process of guiding the sound. In addition, the sound guide will end in 1 sec. -18- 1277722 · (16) When the processing of S 230 is finished, It is then determined whether the vehicle is at a position of 50 m up to the exit of the ring (S23 5). This decision is also the same as S225. Based on the current position of the vehicle calculated from the signal obtained from the position detector 21, And map data read from the map material memory via the map data input device 25, To judge it. When it is determined that the vehicle is at a position of 50 m up to the exit of the ring (S23 5 ·· YES ), Then move to the processing of φ S240; When it is determined that the vehicle is not at a position of 50 m up to the exit of the ring (S23 5 : NO), Then repeat this step (S23 5). on the other hand, In the above S210, when it is determined that the predicted walking distance in the ring is not more than 50 m (S210: NO ), Then, it is determined whether the vehicle is at the position of 1 〇 〇 m until the exit of the ring (S 2 1 5 ). This decision is also the same as S 225. Based on the current position of the vehicle calculated from the signal obtained from the position detector 21, And map data read from the map data storage medium via the map data input device 25, To judge it. When it is determined that the vehicle is at the position of 100 m to the exit of the ring (S21 5 : YES), Then guiding the ring exit direction (S 2 2 0 ); When it is determined that the vehicle is at a position l or more above the exit port of the ring (S235: NO), Then repeat this step (S 2 3 5 ). The so-called guide ring exit direction processing performed in S220, The process is the same as that performed by S23 0. Find the exit direction in which the entry direction of the previous ring is the reference. About the left direction, Right direction, Forward direction, Any one of the backward directions. Then, the obtained result is displayed on the display unit 26, At the same time, the obtained result is output to the sound output unit 27 as a process of guiding the sound. -19- 1277722 » (17) In addition, This sound guide will end in 10 seconds. Then in S240, It is determined whether the exit path of the ring is constituted by a plurality of lanes of the same traveling direction separated by the passing separation zone (composite road). This judgment, It is stored in the map data of the map data memory medium not shown by the map data input device 25, And the information contained in the map data is carried out. When judging that the exit path of the ring is a road (S240: YES), Then, a guide indicating which one of the lanes that constitute the road of the φ road should be clearly indicated (S250), And at the end of this section, the exit guidance process (2)). For example, a guide image that will make the lane to be selected more conspicuous with the color, Displayed on display i to proceed. also, The driver can grasp the guidance sound of the selected lane and output the sound output unit 27. on the other hand, When judging that the exit path of the ring is not a compound road ( : NO), Then, on the display unit 26, a guide image indicating which port should be withdrawn from the ring is displayed. At the same time, the guidance should be exited from the ring φ to the sound output unit 27 for output (S245). then, This processing (exit road guidance processing (2)). Although the above indicates that the predicted walking distance in the ring is 50 m or more, To determine whether it is possible to judge the exit lane only in the ring. However, such an embodiment can also achieve the same effects as the above embodiment. (b) The receiver's explanation of the wrong way to enter the ring and exit the road, To determine whether it is possible to exit the lane guidance only in the ring. Using the flowchart of Figure 6, Explain that using such a judgment method is not possible to read the package with this composite (arrow β 2 6 , Exit at S240 Exit No Exit of the guide mode -20- (18) 1277722 An example of the exit guidance process is the exit route guidance process (3). The exit route guidance process (3) is in the execution of the path guidance process for guiding its guidance path, When the vehicle is at a certain distance before the ring (for example, 500 m before the ring, When it takes at least 1 second or more before reaching the ring, The processing executed by the control unit 29 is started. When the control section 29 starts to exit the execution of the route guidance process (3), First, determine whether the angle between the entry path and the exit path to the target ring is above 90 degrees φ (S 3 1 0 ). For the purpose of this determination, "the angle between the entry path and the exit path to the object ring", It is calculated based on the map data stored in the map data memory media. Specifically, By connecting the coordinates of the entrance node coordinates to the circle center coordinates, And the line segment connecting the node coordinates of the exit node and the coordinates of the center of the ring, Calculate the angle determined by the two. In addition, the so-called "90 degree" angle, Can be specified by the user, Each ring can also be pre-determined. In this S3 10, Judging the angle between the entry path and the exit path of the object ring φ angle is above 90 degrees (S3 10 : YES), Then, it is determined whether the vehicle is in a position reachable by 10 seconds until it reaches the entrance of the ring (S3 25). This determination is made from the current position and speed of the vehicle. When it is determined that the vehicle is in a position reachable by 10 seconds at the entrance to the ring (S3 25: YES), Then guiding the exit direction of the ring (S 3 3 0 ); When it is determined that the vehicle is not in the position of 10 seconds to reach the entrance of the ring (S 3 25 : NO ), Then repeat this step (S325). The so-called guide ring exit direction processing performed in S 3 3 0, Determine the exit direction of the previous ring as the reference direction. About the left -21 - (19) 1277722 Right direction, Forward direction, Any one of the backward directions, The obtained result is displayed on the display unit 26, At the same time, the obtained result is output to the sound output unit 27 as a process of guiding the voice. In addition, This sound guide will end in 10 seconds. 〇 When the processing of S3 30 is finished, Next, it is determined whether or not the vehicle has reached the position that can be reached in 1 second by the round exit (S 3 3 5 ). This decision is also like S3 2 5 It is predicted from the current position and moving speed of the vehicle. φ When it is determined that the vehicle is just 10 seconds away from the entrance to the circle (S 3 3 5 : YES), Then move to the processing of S340; When it is determined that the vehicle has to reach the position of more than 10 seconds before exiting the entrance to the circle (S3 3 5 : NO ), Then repeat this step (S3 3 5). on the other hand, In the above S3 10, when it is judged that the angle between the entry path and the exit path of the target ring is less than 90 degrees (S3 10: NO ), Then, it is determined whether the vehicle is in a position that can be reached in 20 seconds until the circle exits the entrance (S3 15). This decision is also the same as S325. Forecast from the current position of the vehicle and the speed of movement. When it is determined that the vehicle is just 20 seconds away from the entrance to the circle (S3 15 : YES), Then guiding the ring exit direction (S320); When it is determined that the vehicle has to reach the position of more than 20 seconds before exiting the entrance to the circle (S3 3 5 : NO ), Then, the process of repeating the step (S335) and the so-called guide ring exit direction performed in S320 is the same as the process performed by S23 0. Find the exit direction in which the entry direction of the previous ring is the reference. About the left direction, Right direction, Forward direction, Any one of the backward directions. Then, the result of the evaluation is displayed on the display unit 26' and -22-(20) 1277722, and the result of the evaluation is output to the sound output unit 27 as a guidance sound. In addition, This sound guide will end in 10 seconds. Then in S3 40, It is determined whether the exit path of the ring is a road (composite road) composed of a plurality of lanes of the same traveling direction separated by an inaccessible separation zone. This judgment, The map data stored in the map data storage medium (not shown) is read via the map data input unit 25. It is carried out using the information contained in the map material. When judging that the exit path of the ring is a compound φ road (S3 40: YES), Then, a guide indicating which one of the lanes constituting the composite road should pass is clearly indicated (S3 50), This process ends (exit road guidance processing (3)). For example, a guide image that will make the lane to be selected more conspicuous with arrows and colors, Display is performed on the display unit 26. also, The driver can grasp the guiding sound of the selected lane. The sound output unit 27 outputs the sound. on the other hand, When it is determined that the exit path of the ring is not a composite road (S3 40: NO), Then, on the display unit 26, a guide image indicating which exit from the ring φ is to be exited is displayed. At the same time, the guidance should be exited from the exit port of the ring to the sound output unit 27 for output (S3 45). then, End this process (exit path guidance processing (3)). Although the above indicates whether the angle between the entry path and the exit path to the target ring is 90 degrees or more, To determine whether it is possible to exit the lane guidance only in the ring, However, such an embodiment can also obtain the same effects as those of the above embodiment. (c) in the description of the above embodiment, As an example of a guiding sound indicating which of the lanes that constitute the composite road, Although it means "that -23- (21) 1277722 will go to the right, Please enter the guide lane of the slow lane. But it can also be "to the right. The road in the direction of travel consists of two lanes. Please enter the front side lane. The guiding voice. That is to say, the overall composition of the lane ("for two lanes"), Next, explain the lane that should be selected ("Please enter the front lane"). When there are more lanes, It can also be "will be in the right direction. The road in the direction of travel consists of a two-lane slow lane and a two-lane fast lane. Please enter the front side lane of the inner fast lane. The guiding voice. φ According to the road, Sometimes it is difficult for the driver to know where to go from where to go. From where to where is the opposite lane. Sometimes there will be too many lanes in the same direction. It is impossible for the driver to grasp several lanes in an instant. Therefore, if the lane configuration is explained as described above, Then indicate the lane that should be selected, The driver can easily identify the lane that should be selected. [Correspondence with the terms of the patent application, etc.] Finally, Correspondence between the terms of the above embodiment and the terms of φ described in the patent application is shown. The map data input device 25 is equivalent to the guidance information input means. The display unit 26 corresponds to a display means provided by the guidance means. The sound output unit 27 corresponds to a sound output means provided by the guiding means. The control unit 29 corresponds to the guidance control means. [Simple description of the drawing] [Fig. 1] A schematic structural view of the navigation device. [Fig. 2] A flow chart for explaining the exit route guidance process (1). [Fig. 3] A schematic view of a road for explaining a guide example. 24- (22) (22)1277722 [Fig. 4] An example of the display screen. [Fig. 5] Flowchart for explaining the exit route guidance processing (2) [Fig. 6] Flowchart for explaining the exit route guidance processing (3) [Explanation of main component symbols] 20 : Navigation device 2 1 : Position detector 21a: GPS receiver 2 1 b : Gyro 2 1 c : Distance sensor 22: Operating switch group 23a: Remote control 23b: Remote sensor 24 : External communication machine 25 : Map data input machine 2 6 : Display section 27 : Sound output 28 : Microphone 2 9 : Control Department -25-