201002097 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種發聲裝置’尤其涉及一種基於奈米碳 管的發聲裝置。 【先前技術】 發聲裝置一般由信號輸入裝置和發聲元件組成。通過 信號輸入裝置輸入電信號給發聲元件，進而發出聲音。先 前技術t的發聲元件一般爲一揚聲器。該揚聲器爲一種把 電扣號轉換成聲音信號的電聲器件。具體地，揚聲器可將 一疋範圍内的音頻電功率信號通過換能方式轉變爲失真小 並具有足够聲壓級的可聽聲音。揚聲器的種類很多，雖然 它們的工作方式不同，但一般均爲通過産生機械振動推動 周圍的空氣，使空氣介質產生波動從而實現“電_力_聲”之 轉換。 請參閱圖1，先前的電動式揚聲器1〇〇通常由三部分 組成：音圈102、磁鐵104及振膜1〇6。音圈1〇2通常採用 一導體，當音圈102中輸入一個音頻電流信號時，音圈1〇2 相當於-個載流導體。若將其放在固定磁場裏，根據載流 導體在磁場中會受到洛儉兹力作用，音圈102會受到-個 大小與曰頻電流成正比、方向隨音頻電流方向變化而變化 的力。故’音圈102就會在磁場作用下產生振動，並帶動 振膜⑽振動’振膜106前後的空氣亦隨之振動，將電信 说轉換成聲波向四周輕射。然而’該電動式揚聲器100的 結構較爲複雜，且其必須在有磁的條件下工作。 201002097 . /一步地，先前技術中的發聲裝置的發聲原理爲“電_ _之轉換原!里#發聲的最基本條件爲電信號的輸 入。在極端環境，如無電環境下，難法應用 置進行發聲。 本 光聲效應指當物質受到周期性强度調製的光照射時， 會産生聲信號的現象。當物質受到光照射時，物質因吸收 光能而受激發，並通過非輻射躍遷使吸收的光能全部或部 分轉變爲熱。如果照射的光束經過周期性的强度調製，則 在物質内產生周期性的溫度變化，使這部分物質及其鄰近 的媒質熱脹冷縮而産生應力（或壓力）的周期性變化，因 而産生聲信號，此種信號稱光聲信號。光聲信號的頻率與 光調製頻率相同，其强度和相位則决定於物質的光學、熱 學、彈性和幾何的特性。目前，利用光聲效應製造的光聲 譜儀及光聲顯微鏡已經被廣泛應用於物質組分分析檢測領 域。例如，先前技術中的光聲譜儀一般包括一光源、一樣 品室及一信號檢測器。該光源一般爲一調製的脉衝雷射源 或連續雷射源。該信號檢測器一般爲一麥克風。該樣品室 中放置有待測的樣品’該樣品材料不限，可爲氣體、液體 或固體材料，如一固體粉末或一生物樣品等。該雷射源發 射雷射照射到樣品室中的樣品上，由於光聲效應中產生的 聲能直接正比於物質吸收的光能，而不同成分的物質在不 同光波的波長處出現吸收峰值，故當具有多譜線或連續光 s普的光源以不同波長的光束相繼照射樣品時，樣品内不同 成分的物質將在與各自的吸收峰相對應的光波波長處産生 7 201002097 .光聲信號極大值。該信號檢測器通過檢測該光聲信號的極 大值’從而判斷待測樣品的材料種類。 然而，一般材料受到光吸收能力的限制，産生的光聲 #號强度較弱，且頻率範圍在兆赫兹以上，只能通過麥克 =電傳感器等換能裝置接收，故，先前技術中還沒有 2用光聲效應製造的發聲裝置使其産生的聲音信號能直接 it耳感知。另，先前技術中也沒有將廣義的電磁波應用 光聲效應製造的發聲裝置。 自九十年代初以來，以奈米碳管（請參見Helical microtubules of graphitic carbon, Nature, Sumio Iijima, vol ^4, p56(1991))爲代表的奈米材料以其獨特的結構和性質 了人們極大的關注。近幾年來，隨著奈米碳管及奈米 材料研究的不斷深人，其廣闊的應用前景不斷顯現出來。 列如，由於奈米碳管所具有的獨特的電磁學、光學、力學、 H等性能’大量有關其在場發射電子源、傳感器、新型 〃予材料、軟鐵磁材料等領域的應用研究不斷被報道。然 2 ’先前技術中却尚未發現奈米碳管作爲發聲元件 學領域。 + 有馨於此，提供一種結構簡單，可在無磁、無電的條 下直接發出能够被人耳感知的聲音的發聲裝置實為必 要0 【發明内容】 M _種發聲裝置’其包括—電磁波信號輸人裝置及-發 耳兀件。該發聲元件與該電磁波信號輸入裝置間隔設置。 8 201002097 其中，該發聲元件包括至少一層奈米碳管薄膜，該奈米碳 •官薄膜包括多個擇優取向排列的奈米碳管，該電磁波信號 輸入裝置傳遞電磁波信號至該奈米碳管薄膜，使該奈米碳 管薄膜通過吸收該電磁波信號發熱，從而加熱氣體介質發 出聲波。 相較于先前技術’所述發聲裝置具有以下優點··其一， 由於所述發聲裝置中的發聲元件僅由奈米碳管薄膜組成， 無需磁鐵等其它複雜結構，故該發聲裝置的結構較爲簡 單，有利於降低該發聲裝置的成本。其二，該發聲裝置利 ，輸入信號造成該奈米碳管薄膜溫度變化，從而使其周圍 氣體介質迅速膨脹和收縮，進而發出聲波，故該奈米碳管 薄膜組成的發聲裝置可在無磁的條件下工作。其三，由於 該ίί碳管薄膜具有較小的熱容和大的比表面積，故該奈 米炭S薄膜具有升溫迅速、熱滯後小、熱交換速度快的特 故《亥不米碳官薄膜組成的發聲裝置可發出很寬頻譜範 ，圍内的聲音（lHZ-l〇0kHz)，且具有較好的發聲效果。其 =’由於奈米碳管通過凡德瓦爾力首尾相連，故由奈米碳 官組成的奈米碳管薄膜具有較好的機械强度和韌性，並且 首尾相連的奈米碳管沿排列方向具有較好的導埶 I使發以件具有較好的發聲效果。其五，•奈米碳管 =有極大的比表面積’在凡德瓦爾力的作用下，奈米碳管 4膜本身有很好的粘附性， 莰不木妷官溥膜可方便地直接 枯附於支撑結構表面。其 太半―gw —线所抖米碳管薄膜爲從 不未反管陣列中直接拉取獲得’其寬度及長度均不限，故 9 201002097 可容易地製備較大面積的發聲元件。 【實施方式】 以下將結合附圖詳細說明本技術方案實施例的發聲裝 置。 請參閱圖2,本技術方案第一實施例提供一種發聲裝 置10 ’ s亥發聲裝置10包括一電磁波信號輸入裝置112，一 發聲元件114 ’ 一支撑結構ii6及一調製裝置118。該發聲 元件114設置於該支撐結構116上。該支撑結構116爲一 可選擇結構，用於支撑和固定該發聲元件114。該電磁波 信號輸入裝置112與該發聲元件114對應且間隔設置，用 於提供一電磁波信號120。該調製裝置118設置於該電磁 波信號輸入裝置112與發聲元件114之間，用於對所述電 磁波信號m進㈣度或頻率的㈣。從該電磁波信號輸 入裝置112發出的電磁波信號12〇通過該調製裝置118進 行强度和頻率的調製後傳遞至該發聲元件114表面。 所述發聲7G件114包括-奈米碳管層。該奈米碳管層 具有較大的比表面積’ |包括均勾分佈的奈米碳管。該奈 米碳&層包括至少一層奈米碳管薄臈。該奈米碳管薄膜包 括多個擇優取向㈣的奈米碳管。所述奈米碳管薄膜爲通 過從奈求碳管陣财直接拉取獲得，並具有自支撑结構。 進^地’該奈米碳管薄膜包括多個奈米碳管束，所述奈 米碳管束之間通過凡德瓦爾力首尾相連，每個奈米碳管束 具有大致相等的長度且每個奈米碳f束由多㈣互平行的 奈米碳管構成。該奈米碳f可爲單壁奈米碳管、雙壁奈求 201002097 碳管/及多壁奈米碳管令的一種或多種。所述單壁奈米α :〇直二爲奈米〜50奈米’所述雙壁奈米碳管的直 1.0不未〜50奈米，所述多壁奈米碳管的直徑冑爲 奈米。所述奈米碳管薄膜的厚度爲G _微丁 述奈:碳::膜::度及寬度不限，可根據實際二: y步地，所述奈米碳管層可包括至少兩層重叠設置 的不未碳管薄膜’相鄰的奈米碳管薄膜之間通過凡德 結合。該奈米碳管薄膜包括多個擇優取向排列的奈 ^石厌官。該奈米碳管層中的奈米碳管薄膜的層數不限，: 相鄰兩層奈米碳管薄臈中的奈米碳管之間具有一交 α’〇。地90。，具體可依據實際需求製備 = 碳管薄臈中的奈米碳管之間的夹角α大於〇。時，在= 菅薄膜結構中的多個奈米碳管形成一網狀結構，且該網狀 、-構包括多個均勻分佈的微孔，其孔徑小於5微米。 &可以理解’所述奈米碳管層的厚度不能太厚，太厚則 影響奈米碳管與周圍氣體介質進行熱交換，從而影響該發 :一件114的發聲效果。另，該奈米碳管層的厚度不能太 薄，太薄則該奈米碳管層强度較差，在發聲過程中容易損 壞。當所述奈米碳管層的厚度比較小時，例如小於10微 米，该奈米碳管層具有較高的透明度，故採用該奈米碳管 層的發聲70件114爲透明發聲S件114，此時，可將該發 聲兀件114直接設置在各種顯示裝置、手機顯示屏或油晝 =^表面，從而達到節省空間的目的。優選地，所述奈米 妷S層的厚度爲0·5奈米〜1毫米。本技術方案實施例中， 11 201002097 •=奈广炭管層的長度爲3厘米，寬度爲3厘米，厚度爲 作用具有極大的比表面積，在凡德瓦爾力的 切管層中的奈求碳管薄膜本身有报好的點 ，故知用該奈米碳管層作發聲元件m時，可將太 碳管層直接枯附於支撑結構116表面。進一步地 = =構m與所述發聲元#114之間還可通過 2 1 發聲元件114更好地固定在支撑結構- 上所述粘結劑可爲一耐高溫的矽膠。 所述支撑結構m主要起支撑作用，其形狀不限 的物體，如一墙壁或桌面，均可作爲本技 Γ中的支撑結構116。具體地，該支撑結 二16可爲一平面或曲面結構，並具有一表面。此時，該 ’ 7G件m直接設置並貼合於該支撑結構116的表面 ;上。由於該發聲元件114整體通過支撑結構ιΐ6支撑 :亥1聲兀件114可承受强度較高的電磁波信號12〇輸入， 從而具有較高的發聲强度。3，該支撑結構116也可爲一 框架結構、杆狀結構或不規則形狀結構。此時，該發聲 件114部分與该支撑結構116才目接觸，其餘部分懸空設置。 此種設置方式可使該發聲元件114與空氣或周圍介質 ^打熱交，。該發聲元件114與空氣或周圍介質接觸面 貝大，熱父換速度更快，故具有更好的發 聲效率。 該支撑結構116的材料不限，可爲一硬性材料，如金 剛石、木質材料、玻璃或石英。另，所述支撑結構116還 12 201002097 可爲一柔性材料，如纸皙好 支撑…以“ 塑料或樹脂。優選地，該 發聲二114 A 4應具有較好的絕熱性能，從而防止該 的熱量過度的被該支撑結構出吸收， 爲、且=加熱空氣發聲的目的1，該支撑結構ιΐ6優選 116、表面的表面，從而可使設置於上述支撑結構 的接觸兀件114與空氣或其他外界介質具有更大 的接觸面積。 一可以理解’由於上述發聲元件114中的奈米碳管層爲 自支撑、纟Q構，故該支撑結構116爲一可選擇結構。 所述電磁波信號輸入裝置112包括一電磁波信號源， 該電磁波信號源可發出强度或頻率可變的電磁波，形成一 電120 °該電磁波信號120的强度或頻率可不斷 變化，從而能够使作爲發聲元件114的奈米碳管層吸收該 電磁波彳§號120間歇加熱空氣，使空氣不斷膨脹收縮，進 而持續發出聲音。該電磁波信號12〇的頻率範圍包括無線 電波、紅外線、可見光、紫外線、微波、X射線及γ射線 等。優選的’該電磁波信號源爲一光信號源，所發出的電 磁波信號120可爲一光信號，該光信號的波長包括從紫外 至遠紅外波長的各種光波。該電磁波信號120的平均功率 密度在1 M W/mm2〜20W/mm2範圍内。可以理解，該電磁波 信號120的强度不能太弱，太弱則無法使奈米碳管層充分 加熱周圍空氣發出聲音，並且，該電磁波信號120的强度 不能太强’太强使奈米碳管層與空氣中的氡發生反應，從 而破壞該奈米碳管層。優選地，該電磁波信號源爲一脉衝 13 201002097 雷射發生器。 該電磁波信號輸入裝置112發出的電磁波信號120在 發聲元件114上的入射角度與位置不限。另，該電磁波信 號輸入裝置112與發聲元件114之間的距離不限，但應轉 保從該電磁波信號輸入裝置112發出的電磁波能够傳遞至 該發聲元件114表面。優選地，當該電磁波信號爲一光信 號，且該電磁波信號輸入裝置112與該發聲元件114距離 較遠時，該電磁波信號輸入裝置112可以進一步包括一光 纖’該光纖一端與所述光信號源連接，另一端延伸至所述 奈米碳管薄膜附近’從而使通過上述雷射發生器發出的電 磁波信號120通過光纖遠距離傳遞至發聲元件il4表面。 所述調製裝置118爲一可選擇結構，設置於該電磁波 信號120的傳輸路徑上，包括强度調製器、頻率調製器或 兩者的結合。所述發聲裝置10通過調製裝置118對電磁波 k號120的强度及頻率進行調製，從而實現使發聲元件 ,所發出的聲音的强度及頻率的改變。具體地，可以通過以 不同頻率開關電磁波信號120調製電磁波信號12〇的强 弱，或者以不同頻率變化電磁波信號12〇的强度調製電磁 波信號120的强弱。電磁波信號12〇强弱的變化影響發聲 元件114發聲頻率的變化。通過對該電磁波錢m ^行 _ ’可以使該發聲元件114發出不同頻率的聲音。可以 =解’該調製1置118可以與所述電磁波信號輸人裝置ιΐ2 二成或間隔設置。當所述電磁波信號輸入裝置ιΐ2包括一 光纖時’該調製裝置118可設置於光纖的起始端或結束端 14 201002097 ，上。本實施例中，該調製裝置118爲一電光晶體。 本技術方案第一實施例中奈米碳 要包括以下步驟： 、的衣備方法主 乂驟.供一奈米碳管陣列，優選地，辞陆石,< 順排奈米碳管陣列。 、μ車列爲超 與陳^技:方案實施例提供的奈米碳管陣列爲單壁奈米破 =列、雙壁奈米碳管陣列及多壁奈米碳管陣列中的； 二實施例中，該超順排奈米碳管陣列的製備方法 才木用化子乳相沈積法，其具體㈣包括：u) _ =的可:用P_N财基底，或選用形成有氧 基底，本實施例優選爲採用4英寸㈣基底；⑴ =基底表面W形成—催化劑層，該催化劑層材料可選用 鐵（F小姑（CG)、錄（間或其任意組合的合金之一. U)將上述形成有催化劑層的基底在·〜卿。C的空 3〇//里〜=分鐘；（d)將處理過的基底置於反應爐 5辨保護氣體環境下加熱到5〇〇〜戰，然後通入碳源 氣一反應、.勺5 30分鐘，生長得到超順排奈米碳管陣列， 其南度爲200〜400微米。該超順排奈米碳管陣列爲多個彼 此平行且垂直於基底生長的奈米碳管形成的純奈米碳管陣 歹J通過上述控制生長條件，該超順排奈米碳管陣列中基 本不3有雜質如無疋型碳或殘留的催化劑金屬顆粒等。 4不米反g陣列中的奈米碳管彼此通過凡德瓦爾力緊密接 觸形成㈣。該奈㈣管陣列與上述基底面積基本相同。 本實施例中碳源氣可選用乙炔、乙烯、甲烧等化學性 15 201002097 質較：潑的碳氫化合物’本實施例優選的碳源氣爲乙炔； 保護氣體爲氮氣或惰性氣體，本實施例優選的保護氣體 氬氣。 # ,可以理解，本實施例提供的奈米碳管陣列不限於上述 製備方法。也可爲石墨電極恒流電弧放電沈積法、雷射基 發沈積法等。 步驟二··採用一拉伸工具從奈米碳管陣列中拉取獲得 一奈米碳管薄膜。其具體包括以下步驟qa)從上述^米 碳官陣列中選定一定寬度的多個奈米石炭管片冑，本實施例 優選爲採用具有一定寬度的膠帶接觸奈米碳管陣列以選定 -定寬度的多個奈米碳管片冑；（b)以—定速度沿基本垂 直於奈米碳管陣列生長方向拉伸該多個奈米碳管片斷，以 形成一連續的奈米碳管薄膜。 在上述拉伸過程中，該多個奈米碳管片段在拉力作用 下沿拉伸方向逐漸脫離基底的同時，由於凡德瓦爾力作 用，該選定的多個奈米碳管片斷分別與其它奈米碳管片斷 首尾相連地連續地被拉出，從而形成一奈米碳管薄膜。請 參閱圖3及圖4’該奈米碳管薄膜141包括多個擇優取= 排列的奈米碳管i45。進一步地，所述奈米碳管薄膜ΐ4ι 包括多個首尾相連且定向排列的奈米碳管束143，每個奈 米碳管束143具有大致相等的長度，且奈米碳管束143 = 端通過凡德瓦爾力相互連接。該奈米碳管束143包括多個 長度相等且相互平行排列的奈米碳管145。該直接拉伸獲 仟的擇優取向的奈米碳管薄膜141比無序的奈米碳管薄膜 16 201002097 具有更好的均勻性。㈣該直接拉伸獲 ⑷的方法簡單料，適錢行4化㈣。"膜 本實施例令，該奈米碳管薄膜141的寬度與奈米碳管 :列=的基底的尺寸及選定的奈米碳管陣列的寬度有 !’=碳管薄膜141的長度不限，可根據實際需求制 付。心未碳管薄臈141的厚度爲05奈米〜⑽微米。該 奈米碳管薄膜141中的太半# μ 镂辟太丄 中的不未奴官145可爲單壁奈米碳管 、雙壁不切管145及多壁奈米碳管145中的一種 種。、所述單壁奈米碳管145的直徑爲〇 5奈米〜％奈米。 ，述雙壁奈米碳管145的直徑爲1〇奈米〜5〇奈米。所述 夕壁奈米碳管145的直徑爲1.5奈米〜50奈米。 :以理解’由於本實施例超順排奈米碳管陣列中的奈 145非常純淨，且由於奈米碳管145本身的比表面 積非吊大’故該奈米碳管薄膜141本身具有較强的枯性。 故’該奈米碳管薄膜141作爲發聲元件ιΐ4時，可以 枯附於所述支撐結構116表面。 另’可使用有機溶劑處理上述奈米碳管薄臈ΐ4ι。具 體地，可通過試管將有機溶劑滴落在奈米碳管薄膜i4i^ 刚整個奈米碳_ 141。該有機溶劑爲揮發性有機 浴劑’如乙醇、曱醇、丙_、二氣乙烧或氣仿，本實施例 中採用乙醇。該奈米碳管薄m 141經有機溶劑浸潤處理 後，在揮發性有機溶劑的表面張力的作許，該奈米碳管 薄膜141可牢固地貼附在支撑結構116表面，且表面體積 比减小，祕降低’具有良好的機械强度及韋刃性。 17 201002097 本技術方案實施例發聲裝置中採用奈米碳管薄膜141 作爲發聲元件’由於奈米碳管145對電磁波的吸收接近絕 對黑體’從而使發聲裝置對於各種波長的電磁波具有均一 的吸收特性。另，奈米碳管145具有較小的熱容和較大的 散熱面積。故，當發聲元件114中的奈米碳管145受到如 每射專電磁波的照射時，奈米碳管145因吸收光能而受激 發’並通過非輕射使吸收的光能全部或部分轉變爲熱。奈 米碳管145溫度迅速升高，並和周圍的空氣或其他介質進 行迅速的熱交換。如果照射的電磁波經過周期性的强度調 製，則在奈米碳管145内産生周期性的溫度變化，從而使 其周圍的氣體介質也產生周期性的溫度變化，造成周圍空 氣或其他介質迅速的膨脹和收縮，從而發出聲音。進一步 地，本實施例中，所述發聲元件114包括由大量首尾相連 的奈米碳管145組成的奈米碳管薄膜141，故當電磁波信 ^虎輸入裝置118發出的電磁波信號12〇的頻率合適，且發 ^元件114周圍介質爲空氣時，發聲元件發出的聲音 可以直接被人耳感知。可以理解，當電磁波信號12〇的頻 率增高時，該發聲元件114可以發出超聲波。 參閱圖5，本技術方案第二實施例提供一種發聲裝 置20’該發聲裝置2〇包括一信號輸入裝置、一發聲元 件214 支撑結構216及一調製裝置218。 狀社M支撑、。構216爲—框架結構、杆狀結構或不規則形 冓。該發聲元件214部分與該支撑結構216相接觸， 八、°卩分懸空設置’從而使聲音能够透過該發聲元件214 18 201002097 . 傳遞。該電磁波信號輸入裝置212與該發聲元件214對應 且間隔設置。該調製裝置218設置於該電磁波信號輸入裝 置212與發聲元件214之間。 該發聲裝置20與第一實施例中的發聲裝置1〇的結構 基本相似’與第一實施例中的發聲裝置的區別在於，該 發聲裝置20進一步包括一攏音結構222，該攏音結構222 間隔設置在所述發聲元件214遠離電磁波信號220輸入的 側。该攏音結構222與該發聲元件214相隔設置，從而 使發聲元件214發出的聲波通過攏音結構222反射，增强 該發聲裝置20的發聲效果。根據發聲元件214的大小，該 距離可以爲1厘米〜1米。可以理解，該攏音結構222可以 爲具有一較大表面的各種結構，如一平面結構或一曲面結 冓本實細*例中，該攏音結構222爲一平板。該攏音結構 222可以通過支架與該發聲元件214間隔。另，該攏音結 構222與該支撑結構216也可爲一集成設置的整體，如一 、、有乍開口的腔體，该發聲元件214平鋪於該腔體的開 2上’從而形成一亥姆霍兹共振腔。㈣音結構如的材 料爲木質、塑料、金屬或玻璃等。 =術方案實施财，所述發聲元件發聲的頻率範圍 ^::至廑1〇萬赫兹。當發聲元件中的奈米碳管層爲單層 ^日夺，發聲强度就可以達到70 *貝聲壓級 ) 虽該奈米碳管層中丰"半石山Μ 3 J 時，靜錾-灿 反官薄膜的層數增加 方案實聲强度可以進一步增强。另，本技術 …Ρ @奈米0層具有較好的動性和機械强度， 19 201002097 .利用所述奈米碳管層可方便地製成各種形狀和尺寸的發聲 裝置，該發聲裝置可方便地應用於各種音樂設備中，如音 響:手機、MP3、MP4、電視、計算機等電子領域及其: 發聲農置中。另，由於電磁波，尤其係雷射，可以在真: 中遠距離傳播，該發聲裝置可㈣於遠距離信號傳輸= 域，如將聲音信號通過電磁波的形式遠距離傳輸。進一步 地，由於上述發聲元件通過電磁波照射即可發聲，故，春 該電磁波爲紅外線、可見光、紫外線、微波、χ射線及田 射線時，該發聲元件可以在一無電、無磁的極端環境下工 作。 本技術方案實施例提供的發聲裝置具有以下優里占. 薄膜d!所述發聲裝置中的發聲元件僅由奈米碳管 ，專膜組成’無需磁财其它複雜結構，故 構較爲簡單，有利於降低該發聲裝置的成本。盆二，= =由奈米碳管賴組成的發聲元件可以通過輸人一電磁 /甘w發聲:故，該發聲元件可以在—無電環境下工作。 二Γ發聲裝置利用輸人信號造成該奈米碳管薄膜溫度 =、，從而使其周圍氣體介質迅速膨脹和收縮，進而發出 :波：故該奈米碳管薄膜組成的發聲裝置可在無磁的條件 其四’由於5亥奈米碳管薄膜具有較小的熱容和大 面積’故該奈㈣管薄膜具有升溫迅速、熱滯後小、 ‘、、、父換速度快的特點’故該奈米碳管薄膜組成的發聲裝置 可以發出很寬頻譜範圍内的聲音（1Hz德kHz)，且具有 車乂好的發聲效果。其五，由於奈米碳管通過凡德瓦爾力首 20 201002097 尾相連，故由奈米碳管組成的奈米碳管薄膜具有較好的機 械强度和拿刀性，並且首尾相連的奈米碳管沿排列方向具有 較好的導熱性能，能充分發揮奈米碳管的特性，從而使發 聲凡件具有較好的發聲效果。其六，由於奈米碳管具有極 大的比表面積’在凡德瓦爾力的作用下，奈米碳管薄膜本 身有很好的粘附性，故奈米碳管薄膜可方便地直接粘附於 =結構表面。其七’由於所述奈米碳管薄膜爲從奈米碳 管陣列中直接拉取獲得，其寬度及長度均不限，故可以容 易地製備較大面積的發聲元件。其人，#該發聲元件厚度 =較小時，例如小於10微米，該發聲元件具有較高的透明 度’此時’可以將該發聲元件直接設置在各種顯示裝置、 手機顯示屏的顯示表面或油晝的上表面，從而達到節省空 。其九，所述發聲裝置可進—步包括支撑結構及 Μ曰結構，該支撑結構可以提高發聲震置的發聲强产，咳 ^音結射以反射發聲元件發㈣聲波，增 置的發聲效果。 赏车衣 综上所述，本發明確已符合發明專利之要件，遂依法 ，出專财請m所述者僅為本㈣之餘實施例， 不施以此限制本案之申請專利範圍。舉凡習知本案技藏 2士援依本發明之精神所作之等效㈣錢化，皆應涵 盒於以下申請專利範圍内。 【圖式簡單說明】 圖1係先前技術中揚聲器的結構示意圖。 圖2係本技術方案第—實施例發聲裝置的結構示意 21 201002097 圖。 圖3係本技術方案第一實施例發聲裝置中奈米碳管薄 膜的結構示意圖。 圖4係本技術方案第一實施例發聲裝置中奈米碳管薄 膜的掃描電鏡照片。 圖5係本技術方案第二實施例發聲裝置的結構示意 圖。 【主要元件符號說明】 揚聲器 100 音圈 102 磁鐵 104 振膜 106 發聲裝置 10, 20 電磁波信號輸入裝置 112, 212 發聲元件 114, 214 支撑結構 116, 216 調製裝置 118, 218 奈米碳管薄膜 141 奈米碳管束 143 奈米碳管 145 電磁波信號 120, 220 攏音結構 222 22201002097 IX. Description of the Invention: [Technical Field] The present invention relates to a sounding device', and more particularly to a sound emitting device based on a carbon nanotube. [Prior Art] The sounding device is generally composed of a signal input device and a sounding element. An electrical signal is input to the sounding element through the signal input device to generate a sound. The sounding element of the prior art t is generally a speaker. The speaker is an electroacoustic device that converts an electric buckle number into a sound signal. Specifically, the speaker can convert an audio electric power signal within a range to a audible sound with a small distortion and sufficient sound pressure level. There are many types of speakers. Although they work differently, they generally convert the air medium by generating mechanical vibration to cause the air medium to fluctuate, thus achieving the conversion of “electricity_force_sound”. Referring to Fig. 1, the prior electric speaker 1 is usually composed of three parts: a voice coil 102, a magnet 104, and a diaphragm 1〇6. The voice coil 1〇2 usually uses a conductor. When an audio current signal is input to the voice coil 102, the voice coil 1〇2 is equivalent to a current carrying conductor. If it is placed in a fixed magnetic field, the voice coil 102 will be subjected to a Lorentz force in the magnetic field according to the current carrying conductor, and the voice coil 102 will be subjected to a force which is proportional to the magnitude of the chirped frequency current and whose direction changes with the direction of the audio current. Therefore, the voice coil 102 generates vibration under the action of a magnetic field, and drives the diaphragm (10) to vibrate. The air before and after the diaphragm 106 also vibrates, and the telecom is converted into sound waves to be lightly scattered around. However, the structure of the electrodynamic speaker 100 is complicated, and it must operate under magnetic conditions. 201002097 . / One step, the sounding principle of the sounding device in the prior art is "electric___ conversion original! The most basic condition of the sounding is the input of electrical signal. In extreme environments, such as no electricity environment, it is difficult to apply This photoacoustic effect refers to the phenomenon that an acoustic signal is generated when a substance is irradiated with light of a periodic intensity modulation. When a substance is irradiated with light, the substance is excited by absorbing light energy and absorbed by non-radiative transition. The light energy is converted into heat in whole or in part. If the irradiated beam undergoes periodic intensity modulation, a periodic temperature change is generated in the material, causing the material and its adjacent medium to expand and contract and generate stress (or The cyclical change of pressure, thus producing an acoustic signal, which is called a photoacoustic signal. The frequency of the photoacoustic signal is the same as the frequency of the optical modulation, and its intensity and phase are determined by the optical, thermal, elastic and geometric properties of the material. At present, photoacoustic spectrometers and photoacoustic microscopes fabricated using photoacoustic effects have been widely used in the field of composition analysis of substances. For example, previous The intraoperative photoacoustic spectrometer generally comprises a light source, a sample chamber and a signal detector. The light source is generally a modulated pulsed laser source or a continuous laser source. The signal detector is generally a microphone. The sample to be tested is placed therein. The sample material is not limited, and may be a gas, a liquid or a solid material, such as a solid powder or a biological sample, etc. The laser source emits a laser to the sample in the sample chamber due to the light. The acoustic energy generated in the acoustic effect is directly proportional to the light energy absorbed by the substance, while the substances of different compositions have absorption peaks at the wavelengths of different light waves, so when the light source with multi-spectral or continuous light is successively irradiated with beams of different wavelengths When the sample is irradiated, substances of different compositions in the sample will produce 7 201002097. The maximum value of the photoacoustic signal at the wavelength of the light wave corresponding to the respective absorption peak. The signal detector determines the maximum value of the photoacoustic signal by detecting the maximum value of the photoacoustic signal The material type of the sample is measured. However, the general material is limited by the light absorbing ability, and the generated photoacoustic # is weak, and the frequency range is in megahertz. It can only be received by a transducer such as a microphone=electric sensor. Therefore, there is no sounding device manufactured by the photoacoustic effect in the prior art, so that the sound signal generated by the sounding device can be directly perceived by the ear. In addition, the prior art does not Generalized electromagnetic waves are produced by photoacoustic effects. Since the early 1990s, carbon nanotubes (see Helical microtubules of graphitic carbon, Nature, Sumio Iijima, vol ^4, p56 (1991)) Nanomaterials have attracted great attention due to their unique structure and properties. In recent years, with the deep research of carbon nanotubes and nanomaterials, its broad application prospects have been continuously revealed. The unique electromagnetic, optical, mechanical, H and other properties of carbon nanotubes are widely reported in the field of field emission electron sources, sensors, new materials, soft ferromagnetic materials and other applications. However, in the prior art, carbon nanotubes have not been found as a field of phonological components. + In this case, it is necessary to provide a sounding device which is simple in structure and can directly emit a sound which can be perceived by the human ear under a non-magnetic and non-electric strip. [Inventive content] M _ kinds of sounding device 'including electromagnetic waves Signal input device and - earpiece. The sound emitting element is spaced apart from the electromagnetic wave signal input device. 8 201002097 wherein the sounding element comprises at least one layer of carbon nanotube film, the nano carbon film comprises a plurality of preferentially arranged carbon nanotubes, and the electromagnetic wave signal input device transmits electromagnetic wave signals to the carbon nanotube film The carbon nanotube film is heated by absorbing the electromagnetic wave signal, thereby heating the gas medium to emit sound waves. Compared with the prior art, the sounding device has the following advantages: First, since the sounding element in the sounding device is composed only of a carbon nanotube film, and no other complicated structure such as a magnet is needed, the structure of the sounding device is relatively Simple, it is beneficial to reduce the cost of the sounding device. Secondly, the sounding device is advantageous, and the input signal causes the temperature of the carbon nanotube film to change, so that the surrounding gas medium rapidly expands and contracts, and then emits sound waves, so the sound generating device composed of the carbon nanotube film can be non-magnetic Working under the conditions. Thirdly, since the ίί carbon tube film has a small heat capacity and a large specific surface area, the nano-carbon S film has a rapid heating, a small thermal hysteresis, and a fast heat exchange rate. The sounding device can emit a wide spectrum, the sound inside the circle (lHZ-l〇0 kHz), and has a good sounding effect. It = 'Because the carbon nanotubes are connected end to end by Van der Waals force, the carbon nanotube film composed of nano carbon official has good mechanical strength and toughness, and the carbon nanotubes connected end to end have a better orientation along the arrangement direction. A good guide I makes the hair piece have a better sounding effect. Fifth, • Nano carbon tube = has a large specific surface area. Under the action of Van der Waals force, the carbon nanotube 4 membrane itself has good adhesion, and the eucalyptus membrane can be easily and directly Attached to the surface of the support structure. The half-gw-line vibrating rice carbon tube film is obtained by pulling directly from the unreacted array. The width and length are not limited, so 9 201002097 can easily prepare a large-area sounding element. [Embodiment] Hereinafter, a sound emitting device of an embodiment of the present technical solution will be described in detail with reference to the accompanying drawings. Referring to FIG. 2, a first embodiment of the present invention provides a sound emitting device 10's sound emitting device 10 including an electromagnetic wave signal input device 112, a sound emitting element 114', a support structure ii6, and a modulation device 118. The sounding element 114 is disposed on the support structure 116. The support structure 116 is an optional structure for supporting and securing the sounding element 114. The electromagnetic wave signal input device 112 is disposed corresponding to the sound emitting element 114 and spaced apart to provide an electromagnetic wave signal 120. The modulating device 118 is disposed between the electromagnetic signal input device 112 and the sound emitting element 114 for inputting (four) degrees or frequencies (4) of the electromagnetic wave signal m. The electromagnetic wave signal 12 发出 emitted from the electromagnetic wave signal input device 112 is modulated by the modulation device 118 to the intensity and frequency, and then transmitted to the surface of the sound emitting element 114. The vocal 7G piece 114 includes a carbon nanotube layer. The carbon nanotube layer has a large specific surface area' | including a carbon nanotube having a uniform hook distribution. The nanocarbon & layer comprises at least one layer of carbon nanotubes. The carbon nanotube film comprises a plurality of carbon nanotubes of preferred orientation (4). The carbon nanotube film is obtained by directly pulling from the carbon tube array and has a self-supporting structure. The carbon nanotube film comprises a plurality of carbon nanotube bundles connected end to end by a van der Waals force, each of the carbon nanotube bundles having substantially the same length and each nanometer The carbon f-beam consists of multiple (four) mutually parallel carbon nanotubes. The nanocarbon f can be one or more of a single-walled carbon nanotube, a double-walled 201002097 carbon tube/and a multi-walled carbon nanotube. The single-walled nanometer α: 〇 straight two is nanometer ~ 50 nanometers, the double-walled carbon nanotubes are straight 1.0 not less than 50 nanometers, and the diameter of the multi-walled carbon nanotubes is 奈Meter. The thickness of the carbon nanotube film is G _ micro diculation: carbon:: film:: degree and width are not limited, according to the actual two: y steps, the carbon nanotube layer may include at least two layers The overlapping carbon nanotube films are formed by overlapping the adjacent carbon nanotube films. The carbon nanotube film comprises a plurality of stones arranged in a preferred orientation. The number of layers of the carbon nanotube film in the carbon nanotube layer is not limited: the carbon nanotubes in the adjacent two layers of carbon nanotubes have an intersection α'〇. Ground 90. Specifically, it can be prepared according to actual needs = the angle α between the carbon nanotubes in the carbon tube thinner is larger than 〇. At the time, a plurality of carbon nanotubes in the = 菅 film structure form a network structure, and the network structure includes a plurality of uniformly distributed micropores having a pore diameter of less than 5 μm. & It can be understood that the thickness of the carbon nanotube layer should not be too thick, and too thick affects the heat exchange between the carbon nanotube and the surrounding gaseous medium, thereby affecting the sounding effect of the one piece 114. In addition, the thickness of the carbon nanotube layer should not be too thin, and if it is too thin, the carbon nanotube layer is inferior in strength and is easily damaged during the sounding process. When the thickness of the carbon nanotube layer is relatively small, for example, less than 10 micrometers, the carbon nanotube layer has a high transparency, so that the sounding 70 piece 114 of the carbon nanotube layer is a transparent sounding S piece 114, At this time, the sounding element 114 can be directly disposed on various display devices, mobile phone display screens or oil 昼=^ surfaces, thereby achieving the purpose of saving space. Preferably, the nano-S layer has a thickness of from 0.5 nm to 1 mm. In the embodiment of the technical solution, 11 201002097 •= The length of the carbon nanotube layer is 3 cm and the width is 3 cm, and the thickness has a great specific surface area, and the carbon in the cut layer of the van der Waals force The tube film itself has a good point, so that when the carbon nanotube layer is used as the sounding element m, the carbon nanotube layer can be directly adhered to the surface of the support structure 116. Further, the == structure m and the utterance element #114 can be better fixed to the support structure by the 2 1 sounding element 114 - the adhesive can be a high temperature resistant silicone. The support structure m mainly serves as a support, and an object whose shape is not limited, such as a wall or a table top, can be used as the support structure 116 in the present technology. Specifically, the support node 26 can be a planar or curved structure and has a surface. At this time, the '7G piece m is directly disposed and attached to the surface of the support structure 116; Since the sound emitting element 114 is entirely supported by the support structure ι 6 : the acoustic sound element 114 can withstand a high-intensity electromagnetic wave signal 12 〇 input, thereby having a high vocal intensity. 3. The support structure 116 can also be a frame structure, a rod structure or an irregular shape structure. At this time, the sounding part 114 is partially in contact with the supporting structure 116, and the remaining part is suspended. This arrangement allows the sounding element 114 to be in hot contact with the air or surrounding medium. The sounding element 114 has a large contact surface with the air or the surrounding medium, and the hot parent changes speed faster, so that the sounding efficiency is better. The material of the support structure 116 is not limited and may be a hard material such as diamond, wood material, glass or quartz. In addition, the support structure 116 12 201002097 can be a flexible material, such as a paper crucible to support ... to "plastic or resin. Preferably, the sounding two 114 A 4 should have better thermal insulation properties, thereby preventing the heat. Excessively absorbed by the support structure, and = the purpose of heating the air to sound 1, the support structure ι 6 preferably 116, the surface of the surface, so that the contact member 114 disposed on the support structure and the air or other external medium It has a larger contact area. It can be understood that the support structure 116 is an optional structure because the carbon nanotube layer in the sound-emitting element 114 is self-supporting and 纟Q. The electromagnetic wave signal input device 112 includes An electromagnetic wave signal source capable of emitting an electromagnetic wave of variable intensity or frequency to form an electric 120 °. The intensity or frequency of the electromagnetic wave signal 120 can be constantly changed, thereby enabling absorption of the carbon nanotube layer as the sounding element 114 The electromagnetic wave 彳 § 120 intermittently heats the air, so that the air continuously expands and contracts, and then continuously emits a sound. The frequency of the electromagnetic wave signal 12 〇 The range includes radio waves, infrared rays, visible rays, ultraviolet rays, microwaves, X-rays, gamma rays, etc. Preferably, the electromagnetic wave signal source is an optical signal source, and the emitted electromagnetic wave signal 120 can be an optical signal, and the wavelength of the optical signal It includes various light waves from ultraviolet to far infrared wavelengths. The average power density of the electromagnetic wave signal 120 is in the range of 1 MW/mm 2 to 20 W/mm 2 . It can be understood that the intensity of the electromagnetic wave signal 120 cannot be too weak, and if it is too weak, it cannot be used. The carbon nanotube layer sufficiently heats the surrounding air to emit sound, and the intensity of the electromagnetic wave signal 120 cannot be too strong 'too strong to cause the carbon nanotube layer to react with the enthalpy in the air, thereby destroying the carbon nanotube layer. Preferably, the carbon nanotube layer is destroyed. The electromagnetic wave signal source is a pulse 13 201002097 laser generator. The incident angle and position of the electromagnetic wave signal 120 emitted by the electromagnetic wave signal input device 112 on the sound emitting element 114 are not limited. In addition, the electromagnetic wave signal input device 112 and sounding The distance between the elements 114 is not limited, but it should be transferred to the electromagnetic wave emitted from the electromagnetic wave signal input device 112 to be transmitted to the hair Preferably, when the electromagnetic wave signal is an optical signal, and the electromagnetic wave signal input device 112 is far away from the sound emitting element 114, the electromagnetic wave signal input device 112 may further comprise an optical fiber. The optical signal source is connected, and the other end extends to the vicinity of the carbon nanotube film so that the electromagnetic wave signal 120 emitted by the laser generator is transmitted to the surface of the sound emitting element il4 through the optical fiber. The modulation device 118 is a The optional structure is disposed on the transmission path of the electromagnetic wave signal 120, and includes an intensity modulator, a frequency modulator, or a combination of the two. The sounding device 10 modulates the intensity and frequency of the electromagnetic wave k 120 by the modulation device 118. Thereby, the intensity and frequency of the sound emitted by the sound emitting element are changed. Specifically, the intensity of the electromagnetic wave signal 120 can be modulated by switching the electromagnetic wave signal 120 at a different frequency, or the intensity of the electromagnetic wave signal 120 can be modulated by varying the intensity of the electromagnetic wave signal 12〇 at a different frequency. The change in the intensity of the electromagnetic wave signal 12 affects the change in the sounding frequency of the sounding element 114. The sound emitting element 114 can be made to emit sound of different frequencies by the electromagnetic wave m ^ line _ '. The modulation 1 setting 118 can be set or spaced apart from the electromagnetic wave signal input device ιΐ2. When the electromagnetic wave signal input device ι 2 includes an optical fiber, the modulating device 118 can be disposed at the beginning or end 14 201002097 of the optical fiber. In this embodiment, the modulating device 118 is an electro-optic crystal. The nano carbon in the first embodiment of the present technical solution includes the following steps: a method of preparing the substrate, a step of supplying a carbon nanotube, preferably, a stone, and a tandem carbon nanotube array. , μ car listed as super and Chen ^ technology: the carbon nanotube array provided by the embodiment is a single-walled nano-breaking column, double-walled carbon nanotube array and multi-walled carbon nanotube array; In the example, the preparation method of the super-sequential carbon nanotube array is only for the pro-colon phase deposition method, and the specific (4) includes: u) _ = can be: using P_N financial base, or forming an oxygen-based base, Preferably, the embodiment uses a 4 inch (four) substrate; (1) = substrate surface W forms a catalyst layer, and the catalyst layer material may be selected from iron (F agglomerate (CG), recorded (or one of alloys of any combination thereof). The substrate on which the catalyst layer is formed is in the space of 〜 卿 C C C = = = = = = ; ; ; ; ; C C C C C C C C C C C C C C C C C C C C C C C C C C The carbon source gas is reacted and reacted for 5 minutes and 30 minutes to grow a super-aligned carbon nanotube array with a south degree of 200 to 400 microns. The super-sequential carbon nanotube array is parallel and perpendicular to each other. The pure carbon nanotubes formed by the carbon nanotubes grown on the substrate pass through the above controlled growth conditions, the super-shunned nanometer There are basically no impurities in the tube array, such as non-deuterated carbon or residual catalyst metal particles, etc. The carbon nanotubes in the anti-g array are formed by close contact with each other by van der Waals force (IV). The substrate area is substantially the same. In this embodiment, the carbon source gas may be selected from the chemical properties of acetylene, ethylene, and methane. 15 201002097. Comparison: the splashed hydrocarbon 'The preferred carbon source gas in this embodiment is acetylene; the shielding gas is nitrogen. Or an inert gas, the preferred protective gas argon gas in this embodiment. # , It can be understood that the carbon nanotube array provided by the embodiment is not limited to the above preparation method. It can also be a graphite electrode constant current arc discharge deposition method, a laser base. The deposition method, etc. Step 2: Pulling a carbon nanotube film from the carbon nanotube array by using a stretching tool, which specifically includes the following steps qa) selecting a certain width from the above-mentioned carbon meter array For a plurality of nano-carboniferous tube sheets, in this embodiment, it is preferred to use a tape having a certain width to contact the array of carbon nanotubes to select a plurality of carbon nanotube sheets of a predetermined width; (b) to follow the base at a constant speed The plurality of carbon nanotube segments are stretched perpendicularly to the growth direction of the carbon nanotube array to form a continuous carbon nanotube film. In the above stretching process, the plurality of carbon nanotube segments are gradually separated from the substrate in the stretching direction under the action of the tensile force, and the selected plurality of carbon nanotube segments are respectively associated with the other naphthalenes due to the van der Waals force. The carbon nanotube segments are continuously pulled out end to end to form a carbon nanotube film. Referring to Figures 3 and 4', the carbon nanotube film 141 comprises a plurality of carbon nanotubes i45 of preferred arrangement = arrangement. Further, the carbon nanotube film ΐ4ι includes a plurality of end-to-end and aligned carbon nanotube bundles 143, each of the carbon nanotube bundles 143 having substantially the same length, and the carbon nanotube bundle 143 = end through the van der Waals Valli is connected to each other. The carbon nanotube bundle 143 includes a plurality of carbon nanotubes 145 of equal length and arranged in parallel with each other. The direct-stretched preferred orientation of the carbon nanotube film 141 has better uniformity than the disordered carbon nanotube film 16 201002097. (4) The method of direct stretching (4) is simple, and the money is 4 (4). " Membrane embodiment, the width of the carbon nanotube film 141 and the size of the substrate of the carbon nanotube: column = and the width of the selected carbon nanotube array are! '= The length of the carbon tube film 141 is not The limit can be paid according to actual needs. The thickness of the core carbon tube 臈141 is 05 nm to (10) microns. The half of the carbon nanotube film 141 may be one of a single-walled carbon nanotube, a double-walled uncut tube 145, and a multi-walled carbon nanotube 145. All kinds. The single-walled carbon nanotube 145 has a diameter of 〇 5 nm to % nanometer. The diameter of the double-walled carbon nanotube 145 is 1 〇 nanometer ~ 5 〇 nanometer. The outer wall carbon nanotube 145 has a diameter of 1.5 nm to 50 nm. : To understand 'Because the Nai 145 in the super-sequential carbon nanotube array of this embodiment is very pure, and since the specific surface area of the carbon nanotube 145 itself is not large, the carbon nanotube film 141 itself is strong. The dryness. Therefore, when the carbon nanotube film 141 is used as the sounding element ι 4, it can be adhered to the surface of the support structure 116. Alternatively, the above carbon nanotube thinner 4ι can be treated with an organic solvent. Specifically, the organic solvent can be dropped on the carbon nanotube film i4i^ through the test tube just after the entire nano-carbon 141. The organic solvent is a volatile organic bath such as ethanol, decyl alcohol, propylene ketone, ethylene dioxide or gas imitation, and ethanol is used in this embodiment. After the carbon nanotube thin m 141 is subjected to an organic solvent infiltration treatment, the surface of the volatile organic solvent is adhered to the surface of the support structure 116, and the surface volume ratio is reduced. Small, secret reduction 'has good mechanical strength and sharp edge. 17 201002097 In the sound-emitting device of the present embodiment, the carbon nanotube film 141 is used as the sound-emitting element. The absorption of electromagnetic waves by the carbon nanotubes 145 is close to the absolute black body, so that the sound-emitting device has uniform absorption characteristics for electromagnetic waves of various wavelengths. In addition, the carbon nanotube 145 has a small heat capacity and a large heat dissipation area. Therefore, when the carbon nanotubes 145 in the sound generating element 114 are irradiated as per specific electromagnetic waves, the carbon nanotubes 145 are excited by the absorption of light energy, and the absorbed light energy is completely or partially converted by non-light radiation. It is hot. The carbon nanotubes 145 rapidly rise in temperature and undergo rapid heat exchange with the surrounding air or other medium. If the irradiated electromagnetic wave is subjected to periodic intensity modulation, a periodic temperature change is generated in the carbon nanotube 145, so that the surrounding gaseous medium also undergoes periodic temperature changes, causing rapid expansion of the surrounding air or other medium. And shrink, which makes a sound. Further, in the present embodiment, the sound emitting element 114 includes a carbon nanotube film 141 composed of a plurality of carbon nanotubes 145 connected end to end, so that the frequency of the electromagnetic wave signal 12 发出 emitted by the electromagnetic wave input device 118 is Suitably, and when the medium surrounding the element 114 is air, the sound emitted by the sounding element can be directly perceived by the human ear. It will be understood that the acoustic element 114 can emit ultrasonic waves when the frequency of the electromagnetic wave signal 12 增 is increased. Referring to Figure 5, a second embodiment of the present invention provides a sounding device 20'. The sounding device 2 includes a signal input device, a sounding element 214 support structure 216, and a modulation device 218. The company is supported by M. The structure 216 is a frame structure, a rod structure or an irregular shape. The sounding element 214 is partially in contact with the support structure 216, and is arbitrarily disposed so that sound can be transmitted through the sounding element 214 18 201002097 . The electromagnetic wave signal input device 212 is corresponding to and spaced apart from the sound emitting element 214. The modulation device 218 is disposed between the electromagnetic wave signal input device 212 and the sound emitting element 214. The sounding device 20 is substantially similar in structure to the sounding device 1A in the first embodiment. The difference from the sounding device in the first embodiment is that the sounding device 20 further includes a sound-sounding structure 222, and the sound-sounding structure 222 The spacing is disposed on a side of the sounding element 214 that is remote from the input of the electromagnetic wave signal 220. The sound-sounding structure 222 is disposed apart from the sound-emitting element 214 such that the sound waves emitted by the sound-emitting element 214 are reflected by the sound-sounding structure 222, enhancing the sounding effect of the sound-emitting device 20. Depending on the size of the sounding element 214, the distance may be from 1 cm to 1 meter. It can be understood that the sound structure 222 can be a variety of structures having a large surface, such as a planar structure or a curved surface. In the example, the sound structure 222 is a flat plate. The tuning structure 222 can be spaced from the sounding element 214 by a bracket. In addition, the sound absorbing structure 222 and the supporting structure 216 can also be an integrated whole body, such as a cavity having an opening, and the sounding element 214 is laid on the opening 2 of the cavity to form a sea. Mholz resonant cavity. (4) Materials such as sound structure are wood, plastic, metal or glass. = The program is implemented, and the frequency range in which the sounding element emits sound is ^:: to 廑1〇 10,000 Hz. When the carbon nanotube layer in the sounding element is a single layer, the sound intensity can reach 70*B sound pressure level). Although the carbon nanotube layer is in the middle & half of the semi-stone mountain, it is quiet. The actual sound intensity of the layer increase scheme of the canopy film can be further enhanced. In addition, the present technology ... Ρ @奈米0 layer has better dynamic and mechanical strength, 19 201002097. The carbon nanotube layer can be conveniently used to make sounding devices of various shapes and sizes, the sounding device can be conveniently It is used in a variety of music equipment, such as audio: mobile phones, MP3, MP4, television, computers and other electronic fields and its: vocal farming. In addition, since electromagnetic waves, especially lasers, can be transmitted in the true: medium and long distance, the sounding device can (4) transmit signals over long distances, such as long distances, such as transmitting sound signals through electromagnetic waves. Further, since the sound emitting element can emit sound by electromagnetic wave irradiation, when the electromagnetic wave is infrared light, visible light, ultraviolet light, microwave, xenon rays, and field radiation, the sound emitting element can work in an extreme environment of no electricity or magnetism. . The sounding device provided by the embodiment of the present technical solution has the following advantages: the film d! The sounding element in the sounding device is composed only of a carbon nanotube and a special film, and does not require other complicated structures of magnetic resources, so the structure is relatively simple and beneficial. Reduce the cost of the sounding device. Pot 2, = = The sounding element consisting of the carbon nanotubes can be audible by inputting an electromagnetic / gamma: Therefore, the sounding element can work in an electricity-free environment. The second sound emitting device uses the input signal to cause the temperature of the carbon nanotube film to be =, so that the surrounding gas medium rapidly expands and contracts, and then emits: wave: the sound generating device composed of the carbon nanotube film can be non-magnetic The condition of the four 'Because the 5 Heiner carbon tube film has a small heat capacity and a large area', the Nai (four) tube film has the characteristics of rapid temperature rise, small thermal hysteresis, ',, and father's fast change speed'. The sounding device composed of a carbon nanotube film can emit sound in a wide spectral range (1 Hz de kHz) and has a good vocal effect. Fifth, since the carbon nanotubes are connected by the end of Van Der Valent's first 20 201002097, the carbon nanotube film composed of carbon nanotubes has good mechanical strength and knife resistance, and the carbon nanotubes connected end to end. It has good thermal conductivity along the arrangement direction, and can fully exert the characteristics of the carbon nanotubes, so that the sounding parts have better sounding effects. Sixth, because the carbon nanotubes have a very large specific surface area. Under the action of van der Waals force, the carbon nanotube film itself has good adhesion, so the carbon nanotube film can be easily adhered directly to = structural surface. Since the carbon nanotube film is directly drawn from the carbon nanotube array, the width and length thereof are not limited, so that a large-area sounding element can be easily prepared. Its person, #the sounding element thickness=smaller, for example less than 10 micrometers, the sounding element has a higher transparency 'this time' can set the sounding element directly on the display surface of various display devices, mobile phone display screens or oil The upper surface of the crucible is thus saved. In the ninth, the sounding device can further include a support structure and a squat structure, and the support structure can improve the vocal intensity of the vocal vibration, and the coughing sound is emitted to reflect the vocal component (4) sound wave, and the added sound effect is added. . Appreciation of the car clothing In summary, the present invention has indeed met the requirements of the invention patent, 遂 , , , 出 出 出 出 出 出 出 。 。 。 。 所述 所述 所述 所述 所述 所述 所述 所述 所述 所述 所述 所述 所述 所述 所述 所述 。 。 。 。 。 。 。 。 The equivalent of (4) Qianhua, which is based on the spirit of the present invention, should be included in the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic structural view of a speaker in the prior art. 2 is a schematic diagram of the structure of the sounding device of the first embodiment of the present technical solution. 21 201002097. Fig. 3 is a schematic view showing the structure of a carbon nanotube film in the sound generating device of the first embodiment of the present technical solution. Fig. 4 is a scanning electron micrograph of a carbon nanotube film in the sound generating device of the first embodiment of the present technical solution. Fig. 5 is a schematic view showing the structure of a sound generating device of a second embodiment of the present technical solution. [Main component symbol description] Speaker 100 Voice coil 102 Magnet 104 Diaphragm 106 Sounding device 10, 20 Electromagnetic wave signal input device 112, 212 Sounding element 114, 214 Support structure 116, 216 Modulation device 118, 218 Carbon nanotube film 141 Nai Meter carbon tube bundle 143 carbon tube 145 electromagnetic wave signal 120, 220 sound structure 222 22