200410512 (1) 玖、發明說明 【發明所屬之技術領域] 本發明是關於一種藉由光線發送資訊的廣播系統，及 使用此種廣播系統所適用的電燈泡。 【先前技術】 近幾年來’隨著手提終端等的普及化使得使用電波的 通信系統成爲切身者。在最近隨著頻率的缺乏之同時，又 也盛行短波長的紅外線等的利用。但是，電波是除了頻率 的缺乏以外’確認了對於醫療機器或各種精密機器的影響 ’又對於紅外線也顧慮到對於人體的影響（例如眼睛安全 等）。所以’作爲可安全地通信的方法著重在利用光線的 通信。 又作爲通信系統的一種，電力線通信系統被硏究。該 電力線通信系統是將舖設在房屋或大樓，並供電的電力線 ，直接使用作爲信號傳輸媒體，進行傳輸資訊者。電力線 是普及率極高的基礎架構，基本上可進行以電力線所連結 的機器間的.通信。但是與例如手提終端等地未以電力線所 連結的機器之間的通信是無法進行。 另一方面，藉由藍色LED的開發而實現了白色LED 。白色LED是與習知的白熱電燈炮或螢光燈等相比較， 具有耗電特別少，又小型且壽命長的特徵。因此考慮將該 白色LED利用作爲照明光源。白色LED是又具有對於所 輸入的電力響應速度快速的特徵。著重於該特徵，進行著 -4- (2) (2)200410512 藉電性控制點滅或光量而具有信號傳輸功能的硏究。 也進行著融合使用此種白色LED的光線所產生的信 號傳輸功能，及如上述的電力線通信系統的硏究。發明人 等在如非專利文獻〔小峯敏彥，田中裕一，中川正雄 ’ 「白色L E D照明信號傳輸與電力線信號傳輸的融合系 統」，電子情報通信學會技術硏究報告，社團法人電子情 報通信學會，20002 年 3 月 12 日，Vol. 101，No.726，pp.99 —1 〇4〕中有提案。在此種系統中，因使用光線而對於人 體沒有影響。又因使用電力線，而基礎架構是已被整備， 並不需要配線的舖設工程等，而可低成本地構築系統。而 且若具有受光手段’則如手提終端等未連接電力線也可進 行通信。又，藉由電力線上的信號僅直接控制白色led 的點滅或光量，就可將資訊作爲光線放出之故，因而具有 藉由極簡單的構成就可實現的優點。 但是在記載於上述非專利文獻的系統，主要僅限制在 實驗性地進行一對一的通信，而被期待著更廣泛的應用。 【發明內容】 本發明是鑑於上述的事項而創作者，其目的是在於提 供一種藉由使用電力線信號傳輸與LED的照明光信號傳 輸，發送多數資訊的廣播系統，同時提供一種在此種廣播 系統的照明用電燈泡。 本發明的一種廣播系統，其特徵爲具有：用以照明的 led光源，及用以將電力供給於該Led光源的電力線， (3) (3)200410512 及在該電力線調變複數資訊並多重化而與電力波形重疊進 行發送的資訊調變手段，及從電力線上的經調變的複數資 訊選擇性地分離一至複數並控制上述LED光源的光量或 點滅的濾波器手段；藉由上述LED光源的光量變化或點 滅來發送資訊。 如此地在本發明中，在電力線上加上複數資訊並進行 傳輸。如此，例如作爲濾波器手段，設置用以選擇資訊的 選擇手段，藉由所選擇的資訊來控制LED光源的光量或 點滅，就可藉由光線選擇性地從該LED光源廣播資訊。 資訊的選擇是除了藉由物理性開關等進行之外，依照電力 線上的指示資訊進行選擇，或是在接收側裝置中構成進行 資訊的選擇也可以。 更具體地，在資訊調變手段中藉由頻率分割的重化複 數資訊並送出至電力線，在濾波器手段設置各該頻率頻帶 不相的複數帶通濾波器，可構成選擇其一種而能分離資訊 。或是在資訊調變手段中藉由時分割多重化複數資訊之同 時將標記資訊附加於所分割的資訊並送出至電力線，在濾 波器手段中，可構成藉由標記資訊來識別資訊並選擇性地 分離資訊。 又本發明是使用於這種廣播系統，屬於藉由所供給的 電力進行發光並照明的電燈泡，其特徵爲具有：用以照明 的LED光源，及從重疊於所供給的電力的經調變的複數 資訊選擇性地分離一至複數並控制LED光源的光量或點 滅的濾波器手段。一般所利用的電力是交流，而在交流電 -6 - (4) (4)200410512 力使用時設置將交流變換成直流的AC/DC變換手段，構 成將在濾波器手段所分離的資訊成分重疊在藉由 AC/DC 變換手段所變換的直流電力而驅動LED光源較理想。將 此種電燈泡，僅代用在一般所使用的電燈泡，就可藉由光 線發送電力線上的資訊。因此，不必進行照明器具的變更 等工程，直接使用原來的照明器具就可實現藉由光線的資 訊發送。 【實施方式】 第1圖是表示本發明的廣播系統的第一實施形態的方 塊圖。圖中，1是資訊源，2是電力線調變器，3是電力 線，4，5是萬能插口，6是LED照明器具，7是受光終端 ，11是AC/DC變換部，12是帶通濾波器，13是選擇部 ，14是重疊部，15是LED群。資訊源1是除了電腦之外 ，還可藉由TV或CATV，收音機，有線廣播等的調諧機 或接收機等，輸出各種資訊的機器所構成。因此，作爲廣 播的資訊，爲影像或音樂，聲音，畫像，文字資料等各種 資訊也可以。廣播的資訊是一至複數的可以，在這裏作成 輸出複數資訊者。 電力線調變器2是調變從資訊源1所輸出的一至複數 資訊並多重化，重疊在電力波形後送出至電力線3。又， 在通常的電力線通信，爲了實現雙方向的通信大都也具有 解調手段的情形，惟在廣播系統中，爲一方向的通信之故 ，因而不需要解調手段。又，在該例子，作爲資訊的多重 小 (5) (5)200410512 化方法的一例，藉由頻率分割進行多重化。 電力線3是一般舖設在屋內，屋外的電線。該電力線 3是可使用既存者。又’爲了從電力線3接受電力供給， 在壁面等設有萬能插口 4，5等。該萬能插口 4，5也可使 用既存者。在表示於第1圖的例子，是作成在萬能插口 4 插入電力線調變器2，又在萬能插口 5插入L E D照明器具 6所使用者。當然，電力線3及萬能插口 4，5均新設也 可以。又，在該例子’作爲電力供應有使用作爲一般商用 電力的交流電力者。 LED照明器具6是連接於電力線3而用以照明附近所 用的照明器具。例如爲室內則設在天花板等。除此之外， 也可以爲點照明等各種用途的照明器具。在該例中，LED 照明器具6是包括AC/DC變換部1 1，帶通濾波器12，選 擇部13，重疊部14，LED群15等所構成。 AC/DC變換部11是爲了發光LED群15必須藉由直 流電力來驅動，將從電力線3所供給的交流電力變換成直 流者。作爲AC/DC變換部1 1可使用既存的技術。又，配 合LED群15的動作電壓，也進行電壓調整。又，如上述 地重疊有在電力線3經調變的資訊波形之故，因而期望例 如藉由平順電路等在直流波形儘量不會出現資訊波形。 帶通濾波器1 2是設置成用以抽出重疊於電力線3上 的資訊信號。如上述地，在該例子，各該資訊是藉由頻率 分割被多重化之故，因而藉由僅通過特定頻率的帶通濾波 器1 2，可從複數資訊中選擇性地分離一個資訊。表示於 -8- (6) (6)200410512 第1圖的例子，表示並聯地設置所通過的頻率不相同的複 數帶通濾波器的例子。或是也可藉由可變更通過的頻率頻 帶的帶通濾波器所構成。又，對於分離的資訊波形，增加 偏壓，或施以整形或放大等均可以。 選擇部1 3是選擇設於帶通濾波器1 2的複數濾波器中 所使用的一至複數濾波器，由此選擇以光線所發送的資訊 。選擇是除了以手動進行之外，構成選擇性地解調作爲某 一特定頻率所傳送的控制信號，並藉由該控制信號進行濾 波器的選擇等，藉由其他方法構成選擇也可以。或是構成 使用可變更通過帶通濾波器12的頻率，而選擇部13設定 對應於發送至帶通濾波器1 2的資訊的頻率也可以。在第 1圖中將選擇部1 3設在帶通濾波器1 2的前段，惟設在後 段也可以。又，在可變更帶通濾波器1 2所通過的頻率頻 帶的構成時，作爲選擇部1 3隨著特定頻率的控制信號對 於帶通濾波器1 2設定頻率頻帶的構成也可以。又，作爲 LED照明器具6在僅能發送以固定頻率所傳輸的資訊者時 ，則未設置選擇部1 3，具備作爲帶通濾波器1 2通過固定 的頻率頻帶者也可以。 重疊部1 4是將在帶通濾波器1 2所抽出的資訊的信號 重疊在AC/DC變換部Π變換成直流的電力波形。由此可 藉由資訊的信號變更施加於L E D群1 5的電壓，並可控制 LED群15的光量或點滅。例如在點滅LED群15時’構 成藉由來自帶通濾波器1 2的信號來導通/斷開控制來自 A C/DC變換部1 1的電力也可以。 (7) (7)200410512 LED群15是基本上進行照明所用的LED光源，例如 以多數的白色LED等所構成。當然集合紅、藍、綠的 LE〇的構成也同樣。該LED群15是藉由從重疊部14所 給予的電力被驅動而進行發光。LED是響應特性優異之故 ’因而藉由資訊的信號來變更光量，或是藉由點滅，就可 以用光線來發送資訊。這時候，即使高速地變更光量或施 以點滅，均未受到人的眼睛的察覺之故，因而作爲照明仍 然可加以利用。 受光終端7是具有受光手段，受光從LED照明器具6 所照射的光線而抽出資訊的信號，經解調接受資訊的終端 。受光終端7是只要具有受光手段，任何裝置均可以，如 個人電腦或手提終端，手提電話等之外，設置受光手段的 聲頻機器，電視機等的顯示機器等，各種機器均可以。 以下，簡單地說明本發明的廣播系統的第一實施形態 的動作的一例子。作爲資訊源1，準備廣播的各種內容。 例如除了來自電腦的資料之外，還有TV或CATV，收音 機’有線廣播等，視用途準備各種資訊。 從資訊源1所輸出的一至複數資訊是在電力線調變器 2被調變，經多重化而重疊於電力波形，傳輸至電力線3 。第2圖是表示電線上的信號波形的一例的說明圖。在此 例中，使用商用的交流電源（50Hz/60Hz )，表示在電力 波形上重疊資訊的信號波形的例子。爲了避免對於其他機 器的影響，資訊的信號波形是重疊小於電力波形的波形。 在表示於第2(B)圖的放大圖，表示以BPSK等方式調 -10- (8) (8)200410512 變資訊的並與電力波形重疊的例子。又，電力線3是可以 利用既存的電線。又，從萬用插口取得電力的同時分離資 訊加以使用’可進行提供與一般被利用的電力線通信同樣 的資訊。 經電力線3，電力及資訊從萬用插口 5被傳送至LED 照明器具6。在LED照明器具6 ’從萬用插口 5得到裝載 信號波形的電力。又，在一方面，在AC/DC變換部1 1整 流成用以驅動LED群1 5的直流電力並傳送至重疊部1 4。 又，在另一方面，使用藉由選擇部13所選擇的帶通濾波 器1 2內的濾波器僅取出所定頻率成分。這時候，視需要 施加偏壓，或進行波形的整形或放大等較理想。 如此地以重疊部14合成在AC/DC變換成直流的電力 波形，及在帶通濾波器1 2所抽出的資訊的信號並施加於 LED群15。施加於LED群15的電壓，是隨著合成的資訊 的信號波形而變化。由此成爲使得LED群1 5的發光量隨 著資訊的信號波形有所變化，而可發送資訊。 藉由設在受光終端7側的受光元件來受光從該LED 群1 5所放出的光線。又，藉由抽出受光的光量變化並加 以解調，則在受光終端7可取得資訊。如此地’從資訊源 1所提供的資訊中，在LED照明器具6中所選擇的資訊與 照明光一起被送出，成爲在受光終端7中被接收的情形。 這時候，受光終端7的受光部並不與LED照明器具6 ( LED群1 5 )正確地相對向也可以，可受光某一程度的照 明光，就可藉由良好的通信品質取得資訊的信號。此爲 -11 - (9) (9)200410512 L E D照明光使用於照明所用者之故，因而外觀上的發送電 力極大所導致者。藉由以往就被使用的紅外線以同樣的信 號強度發送信號時，無法避免對於人體（例如眼睛）的影 響，在此種意思上’依光線的資訊傳輸是也具有優點。 又，在這裏僅表示一具LED照明器具6，惟例如在附 近配置複數LED照明器具6時，藉由選擇相同資訊進行 廣播，成爲對於陰影變強，又對於移動也可對應。相反地 即使在附近存在選擇其他資訊進行廣播的LED照明器具6 ，若在一具LED照明器具6附近接收，則來自其他的 LED照明器具6的光線會衰減而影響變小。又，在與此種 其他的LED照明器具的干涉成爲問題時，在調變來自資 訊源1的資訊之際，使用千涉強的調變方式，例如Ο OK -RZ ( On-Off Keying, Return-to-Zero )或 OFDM ( Orthogonal Frequency Division Multiplexing)等進行調變 就可以。 又，在表示於第1圖的例子說明了將AC/DC變換部 1 1或帶通濾波器1 2等設在LED照明器具6內者。但是並 不被限定於此，例如在照明的切換用的壁面開關等設置此 些電路，而從壁面開關一直到LED照明器具6止的電力 線部分構成供給重疊有資訊的波形的直流也可以。這時候 ，成爲選擇部1 3的開關也與照明切換用的開關一起可設 在壁面。當然，對於各部的配置並不被限定於此些例子而 爲任意者。 第3圖是表示本發明的廣播系統的第二實施形態的方 -12- (10) 200410512 塊圖。圖中，在與第1圖同樣部分賦予相同記號帀 明1 6是帶通濾波器，1 7是判定部，1 8是選擇部。 中，在每一 LED照明器具6或每一資訊分配固淀 資訊（IP ’ PN碼）等，藉由識別資訊比較，僅選 資訊進行廣播者。 電力線調變器2是在這裏將來自資訊源1的襍 分割成小包，而在前頭賦予信頭並藉由時分割多重 在電力波形。在信頭包含識別資訊。 在LED照明器具6，與LED群1 5及AC/DC 1 1 一起包括帶通濾波器1 6，判定部1 7，選擇部 構成。帶通濾波器16是除去電力的交流成分而分 的信號成分者。在此例中，有關於複數資訊，所有 通過帶通濾波器1 6。 判定部1 7是從在帶通濾波器1 6被分離的資訊 中抽出信頭部分，與事先所設定的識別資訊相比較 所傳送的資訊是否藉由光線來發送者。又，若爲須 時，則對於選擇部1 0選擇資訊部的信號後輸出至 14。通過選擇部 1 8的信號，是在重疊部 14 A C/DC變換音β 1 1被變換成直流的電力波形重疊， 至LED群1 5。以後與上述第一實施形態同樣地， 1 5是藉由資訊的信號使得光量變化’或使得點滅 ，進行依光線的資訊的傳送。又，藉由LED群1 5 來進行照明。 在該第二實施形態中，例如在每一 LED照明 ί省略說 在該例 :的識別 擇特定 :數資訊 :而重疊 變換部 18等所 離資訊 信號都 ^的信號 ，判定 發送者 重疊部 中與在 並供給 LED群 被控制 的發光 器具6 -13- (11) (11)200410512 分配識別資訊，則在將資訊送出至電力線3的一邊，可控 制每一 LED照明器具6所廣播的資訊。又，藉由構成可 設定識別資訊，成爲可選擇從各該LED照明器具6所廣 播的資訊。這時候，可將識別資訊設定複數，也可構成選 擇複數資訊而藉由光線進行送出。 在該第二實施形態，也與上述的第一實施形態同樣地 ，可得到各種態式。又，對於其優點也與上述第一實施形 態同樣。 除了這些實施形態之外，對於以照明光所發送的資訊 並不進行選擇，而藉由光線發送經電力線所傳送的所有資 訊，以接收的終端側構成選擇資訊也可以。 第4圖是表示本發明的可適用於廣播系統的電燈泡的 實施形態的槪念圖。圖中，2 1是電燈泡，22是燈頭，23 是燈座，表示於第4圖的例子是可適用作爲上述廣播系統 的各實施形態的LED照明器具6的一部分者。作爲照明 器具以往就裝設白熱電燈泡加以利用者一般被使用。在天 花板等事先設有燈座2 3，如第4 ( B )圖地在燈座2 3藉由 扭進電燈泡2 1的燈頭22得到電性連接。在此例中，對於 電力線3或燈座23止的配線部分，仍然利用既存設備， 如第4 ( A )圖所示地，在電燈泡2 1內收容在上述第一或 第二實施形態所表示的LED照明器具6內的構成。例如 可收容在電燈泡2 1的燈頭22部分。又，與使用如以往的 白熱電燈泡的燈絲的點光源不相同，將多數LED配置成 面狀之敌，因而在其背面可收容電路部分。 -14 - (12) (12)200410512 藉由使用此種電燈泡，將一般的白熱電燈泡僅更換成 本發明的電燈泡2 1，可將電燈泡2 1使用作爲依光線的資 訊的發送源。 當然，以往就使用的各種電燈泡的形狀，是在如第4 圖所示的形狀以外，也使用各種形狀者。對於本發明的電 燈泡2 1的形狀也並不被限定於如第4圖所示的形狀，可 構成任意形狀。例如也可構成如螢光燈地將LED直線狀 地排列的形狀的電燈泡2 1。 以下，說明本發明的廣播系統的幾種應用例。第5圖 是表示本發明的第一應用例的說明圖。圖中，3 1是LED 照明器具，3 2是作品，3 3是受光終端。表示於第5圖的 例子’是表示將本發明的廣播系統適用在美術館或博物館 等的一例子。在美術館或博物館等，每一作品或展示物（ 以下稱爲作品3 2 )地施以如聚光燈的照明，又進行賦予 作品3 2的說明。作爲照明該作品3 2的照明器具，使用本 發明的LED照明器具3丨。一方面，在將電力供給至LED 照明器具3 1的電力線3，重疊作品3 2的說明資訊並送出 。又，在每一各作品3 2所設置的LED照明器具3 1中， 選擇性地抽出對於各該作品的說明資訊，如上述地藉由控 制照明光的光量或點滅就可藉由光線送出說明資訊。 鑑賞者是在作品3 2前取出受光終端3 3，則光線照射 在受光終端3 3 ’取出該光量變化或點滅並藉由進行解調 ，就可參照該作品3 2的說明資訊。又，當鑑賞者移動至 下一作品的前面’則該作品的說明資訊藉由照明該作品的 -15_ (13) (13)200410512 光線所傳送，若參照受光終端3 3 ’就可參照該作品的說 明資訊。 如此地，將每一各作品3 2的說明資訊電力波形地重 疊於電力線3並送出’而在照明各作品的LED照明器具 3 1中，選擇對應的作品3 2的說明資訊而藉由光線進行送 出，就可將各作品3 2的說明資訊與作品3 2的照明一起提 示給鑑賞者。 每一各作品的說明資訊是並不被限定於二種。例如每 一各作品地提供一種依複數語言的說明資訊時，在LED 照明器具3 1中，選擇對應於照明的作品的複數說明資訊 而藉由光線進行送出。又，在受光終端3 3側，分別分離 藉由光線所送出的複數說明資訊並解調，由其中選擇鑑賞 者所指定的語言的說明資訊而就可提示給鑑賞者。或是， 構成成人用的說明資訊與小孩用的說明資訊等，對於一個 作品3 2藉由光線從相同LED照明器具3 1送出複數說明 資訊也可以。又，說明資訊是並不被限定於文字資訊，例 如聲音資訊也可以，或畫線或動畫等也可以。又，適當地 組合這些的資訊也可以。 第6圖是表示本發明的第二應用例的說明圖。圖中， 41是LED照明器具，42，43是座椅，44是受光終端。該 第二應用例是表示將本發明的廣播系統適用在飛機或電車 或大客車等的例子。在表示於第6圖的例子中，每一各座 椅地設置L E D照明器具4 1，進行各該座椅的照明。與其 同時地，藉由光線送出經電力線3所傳送的資訊。又，在 -16- (14) (14)200410512 前方的座椅42背面設有受光終端44，成爲坐在座椅43 上的乘客可參照受光終端44的畫面。受光終端44受光從 LED照明器具4 1所照射的光線，而藉由受光終端44取得 藉由該光線所送出的資訊。乘客是藉由操作受光終端44 ，選擇所期望的資訊，而可進行視聽。 特別是在包括太空船等飛機中，顧慮到對於計器等的 影響而必須避免機內的電波使用。但是若爲光線，就沒有 對於計器等的影響，又對於人體也沒有影響。因此，如第 6圖所示地，藉由無線就可進行資訊的配信。又，資訊的 選擇是在LED照明器具41進行之外，在受光終端44之 一邊進行也可以。 又，在飛機或電車，大客車等中，作爲照明所用的電 力大都使用直流。因此，不必設置表示於第1圖或第3圖 的構成中的AC/DC變換部1 1。例如藉光線送出經電力線 3所傳送的所有資訊時，也不要帶通濾波器1 2或重疊部 1 4等，藉由從電力線3所供給的資訊的波形所重疊的電 力仍然驅動LED群，藉由光線可送出資訊。 以上，在這裏對於本發明的廣播系統表示兩個應用例 。但是並不被限定於此些的應用例者，藉由光線可適用在 配信資訊的所有用途。例如在一般的辦公室等，除了使用 作爲對於桌子上的個人電腦的配信系統之外，也可使用在 工廠內對於各工序的資訊傳輸等。又，也可進行在家庭內 的電視機或收音機廣播的配信，藉由可搬運型顯示器在任 意房屋內可視聽。這時候，將相當於調諧器的選擇部設在 -17- (15) 200410512 led照明器具內，構成藉由在電視機控制器等; 照明器具內的選擇部可進行選台。又，例如進行 型運動場或事件會場等將有關於進行體育或市場 訊或其他會場的資訊等重疊於照明光並進行送出 成以觀眾所具有的手提終端等受光並取得資訊。 (發明的效果） 由以上說明可知，依照本發明，仍然利用照 設備，藉由光線可配信多數資訊。這時候，如以 需要另外設置發送裝置，或是也不需要重設舖設 等。因此，以低成本就可構築廣播系統。又，也 外線地對於眼睛安全等的人體的影響，或是如電 不會被限制對於飛機等的應用，具有可構築安全 統。 【圖式簡單說明】 第1圖是表示本發明的廣播系統的第一實施 塊圖。 第2圖是表示電力線上的信號波形的一例的 第3圖是表示本發明的廣播系統的第二實施 塊圖。 第4圖是表示可適用於本發明的廣播系統的 實施一形態的槪念圖。 第5圖是表示本發明的第一應用例的說明圖 空制 LED 體育的大 的各種資 ，也可構 明所用的 往地也不 通信電纜 沒有如紅 波地，也 的廣播系 形態的方 說明圖。 形態的方 電燈泡的 -18- (16) (16)200410512 第6圖是表示本發明的第二應用例的說明圖。 (記號的說明） 1 :資訊源 2 :電力線調變器 3 :電力線 4，5 :萬能插口 6 : LED照明器具 7 :受光終端 1 1 : A C / D C變換部 1 2 :帶通濾波器 1 3 :選擇部 1 4 :重疊部 1 5 : L E D 部 1 6 :帶通濾波器 1 7 :判定部 1 8 :選擇部 21 :電燈泡 22 :燈頭 2 3 :燈座 31 : LED照明器具 3 2 .作品 3 3 :受光終端 41 : LED照明器具 -19- 200410512 (17) 4 2，4 3 :座椅 44 :受光終端200410512 (1) 发明. Description of the invention [Technical field to which the invention belongs] The present invention relates to a broadcasting system for transmitting information by light, and an electric bulb suitable for using such a broadcasting system. [Prior Art] In recent years, with the popularization of portable terminals and the like, communication systems using radio waves have become close users. With the recent lack of frequency, the use of short-wavelength infrared rays has also become popular. However, in addition to the lack of frequency, radio waves have been identified as having effects on medical equipment or various precision equipment, and they also have effects on the human body such as infrared rays, such as eye safety. Therefore, as a method of communicating securely, communication using light is emphasized. As one of the communication systems, the power line communication system has been studied. The power line communication system is a power line that is laid in a house or building and supplies power, and is directly used as a signal transmission medium to transmit information. The power line is an infrastructure with a very high penetration rate, and basically can perform communication between the devices connected by the power line. However, communication with a device such as a portable terminal which is not connected by a power line cannot be performed. On the other hand, white LEDs have been realized through the development of blue LEDs. Compared with the conventional incandescent electric light bulb or fluorescent lamp, the white LED has the characteristics of particularly low power consumption, small size and long life. Therefore, it is considered to use the white LED as an illumination light source. The white LED is also characterized by a fast response to input power. Focusing on this feature, I have been researching -4- (2) (2) 200410512 by controlling the light-off or light quantity to have a signal transmission function. Research is also being conducted on signal transmission functions generated by using the light of such white LEDs, as well as power line communication systems as described above. The inventors and others in non-patent literature [Komine Toshihiko, Tanaka Yuichi, Nakagawa Masao '"Fusion System of White LED Lighting Signal Transmission and Power Line Signal Transmission", Technical Research Report of the Institute of Electronic Information and Communications, Electronic Information and Communications Society On March 12, 20002, Vol. 101, No. 726, pp. 99—104. In such a system, there is no effect on the human body due to the use of light. In addition, because the power line is used, the infrastructure is already prepared, and no wiring installation work is required, so the system can be built at low cost. Moreover, if a light receiving means is provided, communication can be performed without a power line such as a portable terminal. In addition, the signal on the power line can only control the white led on or off or the amount of light, so that information can be emitted as light. Therefore, it has the advantage that it can be realized with a very simple structure. However, the systems described in the above-mentioned non-patent documents are mainly limited to experimentally performing one-to-one communication, and are expected to be more widely used. [Summary of the Invention] The present invention has been made in view of the above-mentioned matters, and an object thereof is to provide a broadcasting system that transmits most information by using power line signal transmission and LED light signal transmission, and also to provide a broadcasting system in such Lighting bulbs. A broadcasting system of the present invention is characterized by having a LED light source for lighting and a power line for supplying power to the LED light source, (3) (3) 200410512, and modulating plural information on the power line and multiplexing the information. And information modulation means for transmitting overlapping with the power waveform, and filter means for selectively separating one to plural numbers from the modulated complex information on the power line and controlling the light quantity or flickering of the LED light source; To change the amount of light or turn it off to send information. As described above, in the present invention, plural pieces of information are added to a power line and transmitted. In this way, for example, as a filter means, a selection means for selecting information is set, and the amount of light of the LED light source is controlled or turned off by the selected information, so that information can be selectively broadcast from the LED light source by light. The selection of information may be made by physical switches or the like, according to the instruction information on the power line, or the selection of information in the receiving device. More specifically, in the information modulation method, frequency-division-replicated complex information is transmitted to the power line, and a filter band means is provided with a complex band-pass filter in which each frequency band is out of phase, so that one of them can be selected and separated. Information. Or, in the information modulation method, multiple pieces of complex information are time-divided, and the mark information is added to the divided information and sent to the power line. In the filter method, the information can be identified and selectively selected by the mark information. To separate information. The present invention is used in such a broadcasting system, and belongs to an electric light bulb that emits and illuminates by supplied electric power, and is characterized in that it has an LED light source for lighting and a modulated light source superimposed on the supplied electric power. The filter means for selectively separating one to a plurality of numbers and controlling the light quantity or the flicker of the LED light source. Generally, the electric power used is AC, and when AC power is used, the AC / DC conversion means for converting AC to DC is provided when the power is used, so that the information components separated by the filter means are superimposed on It is ideal to drive the LED light source by DC power converted by AC / DC conversion means. This type of light bulb can be used only for light bulbs that are generally used, and the information on the power line can be transmitted by light. Therefore, it is not necessary to perform engineering work such as changing the lighting fixture, and the original lighting fixture can be directly used to realize information transmission by light. [Embodiment] Fig. 1 is a block diagram showing a first embodiment of a broadcasting system according to the present invention. In the figure, 1 is an information source, 2 is a power line modulator, 3 is a power line, 4, 5 are universal sockets, 6 is an LED lighting fixture, 7 is a light receiving terminal, 11 is an AC / DC conversion unit, and 12 is a band-pass filter. 13 is a selection section, 14 is an overlapping section, and 15 is an LED group. The information source 1 is constituted by a device that outputs various information by a tuner or receiver such as a TV or CATV, a radio, or a cable broadcast, in addition to a computer. Therefore, as the broadcast information, various information such as video or music, sound, image, text data, etc. may be used. The broadcast information can be one to plural. Here, the person who outputs plural information is created. The power line modulator 2 modulates one to plural pieces of information output from the information source 1 and multiplexes the information. The power line modulator 2 superimposes the power waveform and sends it to the power line 3. In addition, in general power line communication, in order to realize bidirectional communication, demodulation means are often used, but in a broadcasting system, it is communication in one direction, so demodulation means are not required. In this example, as an example of a method of multiplexing information (5) (5) 200410512, multiplexing is performed by frequency division. The power line 3 is an electric wire which is generally laid inside and outside the house. This power line 3 is available for use. In order to receive power supply from the power line 3, universal sockets 4, 5 and the like are provided on the wall surface and the like. The universal sockets 4, 5 can also be used with existing ones. In the example shown in FIG. 1, a user who inserts the power line modulator 2 into the universal socket 4 and inserts the LED lighting device 6 into the universal socket 5 is prepared. Of course, new installations of power line 3 and universal sockets 4 and 5 are also acceptable. In this example, an AC power source using general commercial power is supplied as power. The LED lighting fixture 6 is a lighting fixture connected to the power line 3 to illuminate the vicinity. For example, it is installed on the ceiling in the interior. In addition, lighting fixtures for various uses such as spot lighting may be used. In this example, the LED lighting device 6 includes an AC / DC conversion section 11, a band-pass filter 12, a selection section 13, an overlapping section 14, an LED group 15, and the like. The AC / DC conversion unit 11 is required to be driven by DC power for the light-emitting LED group 15 to convert the AC power supplied from the power line 3 to DC. As the AC / DC conversion unit 11, an existing technology can be used. The voltage of the LED group 15 is also adjusted to adjust the voltage. In addition, since the information waveform modulated on the power line 3 is superimposed as described above, it is desirable that the information waveform does not appear as much as possible in the DC waveform, for example, by a smooth circuit. The band-pass filter 12 is provided to extract an information signal superimposed on the power line 3. As described above, in this example, each piece of information is multiplexed by frequency division, and thus a piece of information can be selectively separated from a plurality of pieces of information by passing only a band-pass filter 12 of a specific frequency. The example shown in Figure -8- (6) (6) 200410512 is an example in which complex band-pass filters with different frequencies are set in parallel. Alternatively, it may be constituted by a band-pass filter capable of changing the frequency band to pass. In addition, for the separated information waveform, it is possible to increase the bias voltage or apply shaping or amplification. The selector 13 selects one to complex filters used in the complex filters provided in the band-pass filter 12 and thereby selects information to be transmitted by light. In addition to manual selection, it is possible to selectively demodulate a control signal transmitted as a specific frequency and select a filter by using the control signal. Alternatively, the selection may be configured by other methods. Alternatively, the frequency of the band-pass filter 12 may be changed, and the selection unit 13 may set a frequency corresponding to the information transmitted to the band-pass filter 12. In FIG. 1, the selection section 13 is provided at the front stage of the band-pass filter 12, but it may be provided at the rear stage. When the configuration of the frequency band passed by the band-pass filter 12 can be changed, the configuration in which the selection unit 13 sets a frequency band for the band-pass filter 12 in accordance with a control signal of a specific frequency may be used. In addition, when the LED lighting device 6 can only transmit information transmitted at a fixed frequency, the selection section 13 is not provided, and a person who passes the fixed frequency band as the band-pass filter 12 may be provided. The superimposing unit 14 is a power waveform obtained by superimposing a signal of information extracted by the band-pass filter 12 on the AC / DC conversion unit Π and converting it into a direct current. Thereby, the voltage applied to the LED group 15 can be changed by the information signal, and the amount of light or the light of the LED group 15 can be controlled. For example, when the LED group 15 is turned on and off ', the signal from the band-pass filter 12 may be used to turn on / off the power from the AC / DC conversion unit 11 to control it. (7) (7) 200410512 The LED group 15 is an LED light source for basically lighting, and is composed of, for example, a large number of white LEDs. Of course, the composition of LE0 that combines red, blue, and green is the same. The LED group 15 emits light by being driven by the power supplied from the overlapping portion 14. LEDs have excellent response characteristics, so you can use light to send information by changing the amount of light with the information signal. At this time, even if the amount of light is changed or the light is turned off at high speed, it is not noticed by human eyes, so it can still be used as illumination. The light-receiving terminal 7 is a terminal having a light-receiving means that receives light from the light emitted from the LED lighting fixture 6 to extract information and demodulate and receives the information. The light-receiving terminal 7 may be any device as long as it has light-receiving means, such as an audio device provided with a light-receiving means, a display device such as a television, etc., in addition to a personal computer, a portable terminal, or a mobile phone. An example of the operation of the first embodiment of the broadcasting system of the present invention will be briefly described below. As the information source 1, various contents to be broadcast are prepared. For example, in addition to materials from a computer, there are TV or CATV, radio's cable broadcasting, etc., and various information is prepared depending on the purpose. One to plural pieces of information output from the information source 1 are modulated in the power line modulator 2 and are multiplexed to overlap the power waveform and transmitted to the power line 3. FIG. 2 is an explanatory diagram showing an example of a signal waveform on a wire. In this example, a commercial AC power source (50Hz / 60Hz) is used to show an example of a signal waveform with information superimposed on the power waveform. In order to avoid the impact on other machines, the signal waveform of the information is a waveform that overlaps less than the power waveform. The enlarged view shown in FIG. 2 (B) shows an example in which the variable information is adjusted in a manner such as BPSK -10- (8) (8) 200410512 and overlaps with the power waveform. The electric power line 3 can be an existing electric line. In addition, it is possible to provide information similar to the power line communication generally used by separating the information and using it while obtaining power from the universal socket. Through the power line 3, power and information are transmitted from the universal socket 5 to the LED lighting fixture 6. In the LED lighting fixture 6 ', power from the universal socket 5 is loaded with a signal waveform. On the other hand, the AC / DC conversion section 11 rectifies the DC power for driving the LED group 15 and transmits it to the overlapping section 14. On the other hand, a filter in the band-pass filter 12 selected by the selection section 13 is used to extract only a predetermined frequency component. At this time, it is ideal to apply a bias or to reshape or enlarge the waveform as needed. In this way, the superimposed portion 14 synthesizes an AC / DC-converted power waveform and a signal of information extracted by the band-pass filter 12 and applies it to the LED group 15. The voltage applied to the LED group 15 varies according to the signal waveform of the synthesized information. As a result, the light emission amount of the LED group 15 can be changed according to the signal waveform of the information, and information can be transmitted. The light emitted from the LED group 15 is received by a light receiving element provided on the light receiving terminal 7 side. In addition, by extracting a change in the amount of received light and demodulating it, information can be obtained at the light receiving terminal 7. In this way, from the information provided by the information source 1, the information selected in the LED lighting fixture 6 is sent out together with the illumination light, and it is received in the light receiving terminal 7. At this time, the light-receiving part of the light-receiving terminal 7 does not have to face the LED lighting fixture 6 (LED group 15) correctly. The light-receiving light of a certain degree can be received, and the information signal can be obtained with good communication quality. . This is because -11-(9) (9) 200410512 L E D illumination light is used for lighting, so the appearance of the transmission power is extremely large. When the infrared signal that has been used in the past transmits a signal with the same signal strength, the effect on the human body (such as the eyes) cannot be avoided. In this sense, information transmission by light is also advantageous. Here, only one LED lighting fixture 6 is shown here. For example, when plural LED lighting fixtures 6 are arranged in the vicinity, the same information is selected for broadcasting, so that it becomes stronger for shadows and also supports movement. Conversely, even if there is an LED lighting device 6 that selects other information for broadcasting nearby, if it is received near one LED lighting device 6, the light from the other LED lighting devices 6 will be attenuated and the influence will be small. In addition, when interference with such other LED lighting equipment becomes a problem, when modulating information from the information source 1, a strong modulation method is used, for example, OK -RZ (On-Off Keying, Return -to-Zero) or OFDM (Orthogonal Frequency Division Multiplexing). The example shown in FIG. 1 illustrates the case where the AC / DC conversion unit 11 or the band-pass filter 12 is provided in the LED lighting device 6. However, the present invention is not limited to this. For example, these circuits may be provided in a wall switch for lighting switching, and the power line portion from the wall switch to the LED lighting device 6 may constitute a direct current that supplies a waveform with information superimposed. At this time, the switch serving as the selection unit 13 may be provided on the wall surface together with the switch for switching the lighting. Of course, the arrangement of each part is not limited to these examples, and is arbitrary. Fig. 3 is a block diagram showing a second embodiment of the broadcasting system of the present invention. In the figure, the same symbols are given to the same parts as in FIG. 1. Note that 16 is a band-pass filter, 17 is a determination unit, and 18 is a selection unit. In each LED lighting device 6 or each information, solid lake information (IP ′ PN code) is allocated, etc., and only the information is selected for broadcaster by comparing the identification information. Here, the power line modulator 2 divides the 襍 from the information source 1 into small packets, and gives a letterhead at the front and divides multiple times in the power waveform by time. Include identification information in the letterhead. The LED lighting device 6 includes a band-pass filter 16, a determination unit 17, and a selection unit together with the LED group 15 and AC / DC 1 1. The band-pass filter 16 is a signal component divided by removing an AC component of electric power. In this example, there is information about complex numbers, all of which pass through the band-pass filter 16. The judging unit 17 extracts the header portion from the information separated by the band-pass filter 16, and compares the transmitted information with the light by sending it to the identification information set in advance. If it is necessary, the selection unit 10 selects the signal of the information unit and outputs it to 14. The signal passing through the selection section 18 is a power waveform in which the C / DC conversion sound β 1 1 is converted into a direct current in the overlap section 14 A and overlaps to the LED group 15. In the same manner as in the first embodiment, 15 is to change the light amount by the signal of information 'or to turn on and off, and transmit the information by light. The LED group 15 is used for lighting. In this second embodiment, for example, in each case, the LED illumination is omitted, and in this example: the identification selection is specific: the number information: and the signals including the overlapping conversion unit 18 and other information signals are ^, determine the sender overlapping portion With the distribution of the identification information to the light-emitting appliances controlled by the LED group 6-13- (11) (11) 200410512, the information broadcasted by each LED lighting device 6 can be controlled by sending the information to the side of the power line 3. Furthermore, the identification information can be set by the configuration, so that the information to be broadcasted from each of the LED lighting fixtures 6 can be selected. At this time, plural pieces of identification information may be set, or plural pieces of information may be selected and sent by light. Also in this second embodiment, various modes can be obtained in the same manner as the first embodiment described above. The advantages are the same as those of the first embodiment. In addition to these embodiments, the information transmitted by the illumination light is not selected, but all information transmitted through the power line is transmitted by light, and the selection information may be constituted by the receiving terminal side. Fig. 4 is a conceptual diagram showing an embodiment of an electric light bulb applicable to a broadcasting system according to the present invention. In the figure, 21 is an electric light bulb, 22 is a lamp cap, and 23 is a lamp holder. The example shown in FIG. 4 is a part of the LED lighting device 6 applicable to each embodiment of the broadcasting system described above. In the past, it has been generally used as a lighting device by installing a white light bulb. A lamp holder 2 3 is provided in advance on the ceiling board, etc., and as shown in FIG. 4 (B), the lamp holder 23 is electrically connected by twisting the lamp holder 22 of the electric bulb 21. In this example, as for the wiring part of the power line 3 or the lamp holder 23, the existing equipment is still used. As shown in FIG. 4 (A), the electric bulb 21 is housed in the first or second embodiment described above. The structure of the LED lighting fixture 6 inside. For example, it can be accommodated in the base 22 of the electric bulb 21. Also, unlike point light sources using filaments such as conventional incandescent light bulbs, many LEDs are arranged as planar enemies, so that circuit parts can be housed on the back surface. -14-(12) (12) 200410512 By using this kind of electric bulb, the ordinary white heat electric bulb is replaced only with the electric bulb 21 of the present invention, and the electric bulb 21 can be used as a light source for transmitting information. Of course, the shapes of various electric bulbs that have been used conventionally are in addition to the shapes shown in FIG. 4, and various shapes are used. The shape of the electric bulb 21 according to the present invention is not limited to the shape shown in Fig. 4, and any shape can be adopted. For example, a light bulb 21 having a shape in which LEDs are linearly arranged like a fluorescent lamp may be configured. Hereinafter, several application examples of the broadcasting system of the present invention will be described. Fig. 5 is an explanatory diagram showing a first application example of the present invention. In the figure, 31 is an LED lighting device, 32 is a work, and 33 is a light receiving terminal. The example 'shown in Fig. 5 is an example of applying the broadcasting system of the present invention to an art museum, a museum, or the like. In an art museum or a museum, each piece of work or display (hereinafter referred to as work 32) is illuminated with a spotlight, and a description is given to work 32. As the lighting fixture for lighting the work 32, the LED lighting fixture 3 丨 of the present invention is used. On the one hand, the description information of the work 32 is superimposed on the power line 3 that supplies power to the LED lighting apparatus 31 and is transmitted. In addition, in the LED lighting apparatus 31 provided in each work 32, the explanatory information for each work is selectively extracted, and as described above, it can be sent out by light by controlling the amount of light of the illumination light or turning it off. Help information. The connoisseur took out the light receiving terminal 3 3 before the work 32, and then the light was irradiated to the light receiving terminal 3 3 ′ to take out the light quantity change or point out and demodulate, and then refer to the description information of the work 32. In addition, when the connoisseur moves to the front of the next work, then the description information of the work is transmitted by the -15_ (13) (13) 200410512 light that illuminates the work. If you refer to the light receiving terminal 3 3 ', you can refer to the work. Help information. In this way, the description information of each work 32 is superimposed on the power line 3 in a wave shape and sent out, and among the LED lighting appliances 31 that illuminate each work, the corresponding description information of work 3 2 is selected by light. After submitting it, the explanation information of each work 32 and the lighting of work 32 can be presented to the connoisseurs. The description information of each work is not limited to two types. For example, when each piece of work provides explanatory information in plural languages, the LED lighting apparatus 31 selects plural pieces of explanatory information corresponding to the illuminated work and sends it out by light. In addition, on the light receiving terminal 33 side, the plural explanation information sent by the light is separated and demodulated, and the explanation information in the language designated by the connoisseur is selected and presented to the connoisseur. Alternatively, it is also possible to constitute explanatory information for adults and explanatory information for children, etc. For one work 3 2, plural pieces of explanatory information may be sent from the same LED lighting device 31 by light. In addition, the explanation information is not limited to text information, for example, audio information may be used, or line drawing or animation may be used. It is also possible to appropriately combine these pieces of information. FIG. 6 is an explanatory diagram showing a second application example of the present invention. In the figure, 41 is an LED lighting fixture, 42, 43 are seats, and 44 is a light receiving terminal. This second application example is an example in which the broadcasting system of the present invention is applied to an airplane, a tram, a bus, or the like. In the example shown in Fig. 6, the LED lighting equipment 41 is provided for each seat, and each seat is illuminated. At the same time, the information transmitted via the power line 3 is transmitted by light. In addition, a light receiving terminal 44 is provided on the back of the seat 42 in front of -16- (14) (14) 200410512, so that a passenger sitting on the seat 43 can refer to the screen of the light receiving terminal 44. The light receiving terminal 44 receives light radiated from the LED lighting fixture 41, and obtains information transmitted by the light through the light receiving terminal 44. The passenger selects desired information by operating the light receiving terminal 44 and can perform audiovisual viewing. Especially in airplanes including space ships, the use of radio waves inside the machine must be avoided in consideration of the effects on the meter and the like. However, if it is light, it has no effect on counters, etc., and it has no effect on the human body. Therefore, as shown in FIG. 6, information can be distributed wirelessly. The selection of information may be performed on the side of the light receiving terminal 44 in addition to the LED lighting device 41. In airplanes, trams, buses, etc., most of the electric power used for lighting uses DC. Therefore, it is not necessary to provide the AC / DC conversion section 11 in the configuration shown in Fig. 1 or Fig. 3. For example, when sending all the information transmitted through the power line 3 by light, do not pass the filter 12 or the overlapping portion 14 and so on. The LED group is still driven by the overlapping power of the waveform of the information supplied from the power line 3. Information can be sent by light. Hereinabove, two application examples have been shown for the broadcasting system of the present invention. However, it is not limited to those application examples, and can be applied to all uses of distribution information by light. For example, in a general office or the like, in addition to being used as a distribution system for a personal computer on a desk, it is also possible to use information transmission for each process in a factory. It is also possible to distribute a television or radio broadcast in the home, and view it in any house with a portable display. At this time, the selection section equivalent to the tuner is set in -17- (15) 200410512 led lighting fixture, and the selection section in the lighting fixture can be used to select a channel. In addition, for example, a sports stadium, an event venue, or the like, information on sports, marketing, or other venues is superimposed on the illumination light and transmitted to receive light and obtain information by a portable terminal or the like owned by the audience. (Effects of the Invention) As can be seen from the above description, according to the present invention, most of the information can be distributed by light using a lighting device. At this time, if it is necessary to install a sending device separately, or if it is not necessary to reset the laying. Therefore, a broadcasting system can be constructed at a low cost. In addition, it also has a safety system that can affect the human body such as eye safety or the application of electricity to airplanes. [Brief Description of the Drawings] Fig. 1 is a block diagram showing a first embodiment of the broadcasting system of the present invention. Fig. 2 is a block diagram showing an example of a signal waveform on a power line. Fig. 3 is a block diagram showing a second embodiment of the broadcasting system of the present invention. Fig. 4 is a conceptual diagram showing an embodiment of a broadcasting system applicable to the present invention. Fig. 5 is an explanatory diagram showing a first application example of the present invention. Various types of large-scale LED sports equipment can also be used. It is also possible to construct a broadcast system that does not have the same communication cable as the red wave ground. Illustrating. Form of the square -18- (16) (16) 200410512 Fig. 6 is an explanatory diagram showing a second application example of the present invention. (Description of symbols) 1: Information source 2: Power line modulator 3: Power line 4, 5: Universal socket 6: LED lighting equipment 7: Light receiving terminal 1 1: AC / DC conversion unit 1 2: Bandpass filter 1 3 : Selection section 1 4: Overlap section 15: LED section 16: Band-pass filter 1 7: Determination section 18: Selection section 21: Light bulb 22: Lamp holder 2 3: Lamp holder 31: LED lighting device 3 2. Works 3 3: Light receiving terminal 41: LED lighting equipment-19- 200410512 (17) 4 2, 4 3: Seat 44: Light receiving terminal