201012238 九、發明說明： 【發明所屬之技術領域】 • 本發明涉及一種音箱’尤其涉及一種基於奈米碳管的 •音箱。 【先前技術】 音箱分爲有源音箱和無源音箱兩類。有源音箱一般包 括箱體、設置於箱體之中的揚聲器、分頻器、功率放大器 及驅動功率放大器工作的電源。無源音箱一般僅包括箱體 及設置於箱體之中的揚聲器。 音箱的箱體一般爲一具有一定形狀及容積的殼體，其 材料爲木質、塑料或陶瓷等吸音效果好的材料。 揚聲器用於將電信號轉換成聲音信號。具體地，揚聲 器可將一定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。先前的揚聲器的種 類很多，根據其工作原理，分爲：電動式揚聲器、電磁式 ❹揚聲器、靜電式揚聲器及壓電式揚聲器。雖然它們的工作 方式不同，但一般均爲通過產生機械振動推動周圍的空 氣，使空氣介質産生波動從而實現“電·力-聲，，之轉換。其 中’電動式揚聲器的應用最爲廣泛。 請參閱圖1，先前的採用電動式揚聲器的無源音箱1〇 一般包括一箱體no及設置於箱體no内部的揚聲器 二〇。該揚聲器1〇〇通常由三部分組成：音圈、磁鐵及振膜。 音圈通常採用通電導體，當音圈中輸入一個音頻電流信號 時，音圈相當於一個載流導體。由於放在所述磁鐵產生的 6 201012238 ‘磁場裏，根據載流導體在磁場中會受到騎兹力音圈會 受到-個大小與音頻電流成正比、方向隨音頻電流方向變 -化而變化的力。故，音圈就會在所述磁鐵産生的磁場作用 -下產生振動，並帶動振臈振動，振膜前後的空氣亦隨之振 動，將電信號轉換成聲波向四周輻射。然而，該採用電動 式揚聲H 100的音们㈣結構較爲複雜，且其必須在有磁 的條件下工作。 自九十年代初以來，以奈米碳管（請參見He〗ical microtubules of graphitic carbon, Nature, Sumio lijima, vol 354, p56(1991))爲代表的奈米材料以其獨特的結構和性質 引起了人們極大的關注。近幾年來，隨著奈米碳管及夺米 材料研究的不斷深入，其廣闊的應用前景不斷顯現出來。 例如，由於奈米碳管所具有的獨特的電磁學、光學、力學、 化學等性能，大量有關其在場發射電子源、傳感器、新型 光學材料、軟鐵磁材料等領域的應用研究不斷被報道。然 ❹而’先前技術中却尚未發現奈米碳管用於聲學領域。 有鑒於此，提供一種結構簡單，可在無磁的條件下工 作的音箱實為必要。 【發明内容】 種音箱’其包括：一箱體；及至少一揚聲器，該揚 聲器設置於箱體内部，其中：至少一揚聲器包括一奈米碳 管結構’所述奈米碳管結構將音頻電信號轉換爲熱能，從 而加熱周圍氣體介質發出聲波。 相較於先前技術，所述音箱具有以下優點：其一，由 7 201012238 ==的揚聲器僅包括奈米碳管結構，無需磁鐵等 二】=17該音箱的結構較爲簡單，有利於降低該 :該奈=管結利r部輸入的音頻電信號造 Ο 收縮’進而發出聲波，無需振膜，故該揚聲器組成 可在無磁的條件下工作。其三4於奈来碳管結構 的熱容和大的比表面積，在輸人信號後，根據信 ，强度（如電流强度）的變化，由一層狀奈米碳管結構組 成的揚聲料均勻地加制圍的氣體介質、迅速升降溫、 ;生周期性的溫度變化，並和_氣體介質進行快速熱交 :立使周圍氣體介質迅速膨脹和㈣，發出人耳可感知的 聲音，且所發出的聲音的頻率範圍較寬（iHz〜腿Hz)、 發聲效果較好。其四，由於奈米碳管具有較好的機械强度 和勒性’耐用性較好’從而有利於製備由奈米碳管結構組 成的各種形狀、尺寸的音箱，進而方便地應用於各種領域。 其五，由於奈米碳管具有極大的比表面積，故奈米碳管結 構具有較好的粘附性，可直接粘附在音箱的箱體内部，從 而使音箱具有更簡單的結構。 【實施方式】 以下將結合附圖詳細說明本技術方案實施例的音箱。 本技術方案提供一種音箱，該音箱包括一箱體；及至 少一揚聲器’該揚聲器設置於箱體内部。 凊參閱圖2，本技術方案第一實施例提供一種密閉式 音箱20，該音箱包括一箱體21〇及至少一揚聲器2〇〇。該 8 201012238 箱體210具有至少一第一通孔212，所述揚聲器200具有 與該第一通孔212基本等大的面積，並覆蓋於箱體21〇的 •第一通孔212上。該箱體210與覆蓋於箱體21〇的第一通 .孔212上的揚聲器200共同形成一密閉空間。具體地，該 揚聲器200從箱體210内部覆蓋該第一通孔212。 所述la體210的材料爲吸音性能好並具有一定强度的 材料’如：木質、金剛石、玻璃、石英、陶瓷、塑料或樹 脂等。 ❹ 所述至少一揚聲器200包括一奈米碳管結構2〇2。該 奈米碳管結構202爲層狀或其它形狀，且具有較大的比表 面積。具體地，該奈米碳管結構202可爲至少一層奈米碳 管膜、至少一奈米碳管線狀結構或所述奈米碳管膜和線狀 結構組成的複合結構。所述奈米碳管結構2〇2包括均勻分 佈的奈米碳管，奈米碳管之間通過凡德瓦爾力緊密結合。 該奈米碳管結構202中的奈米碳管爲無序或有序排列。具 ❹體地，當奈米碳管結構202包括無序排列的奈米碳管時， 奈米碳管相互纏繞或者各向同性排列；當奈米碳管結構 202包括有序排列的奈米碳管時，奈米碳管沿一個方^或 者多個方向擇優取向排列。該奈米碳管結構2〇2的厚度爲 0.5奈米〜1毫米。所述奈米碳管結構2〇2的厚度太大，則 比表面積减小，熱容增大；所述奈米碳管結#2〇2的厚度 太^、，則機械强度較差，耐用性不够好。優選地，該奈= 碳管結構202的厚度爲5G奈米。#該奈米碳管結構加 厚度比較小時，例如小於1〇微米，該奈米碳管結構親 9 201012238 度。該奈米碳管結構202中的奈米碳管包括 早不；；石厌管、雙壁奈米碳管及多壁奈米碳管中 多種。所述單壁奈米碳f的餘爲G5㈣ 種^ 述雙壁奈米碳管的直徑爲U奈米〜50奈米，所^壁: 米碳管的直…5奈米〜50奈米。可理解，斤= 管結構202的具體結構不限，σ 所边不未碳 邕层灿十甘^ 再个丨艮，、而滿足下述二個條件，即： 其匕形狀，且具有較大的比表面積；包括均句分 ;及厚度爲G.5奈米〜1㈣。優選地，所述 不只奴f結構202包括有序排列的奈米碳管，冑米碳 參 一固定方向擇優取向排列。本技術方案實施例中，所述I 米碳管結構202爲-奈米碳管拉膜結構，其包括—層或^ 叠設置的多層從奈米碳料财直餘取獲得的奈米碳管 膜。請參閱圖3及圖4’進一步地，所述奈米碳管結構2〇2 中奈W管膜包括多個奈米碳管沿拉取方向首尾相連並擇 優取向排列且均勾分佈。具體地，所述奈米碳管膜包括多 個首尾相連且定向排列的奈米碳管片段143，每個奈来碳 管片段143具有大致相等的長度，且奈米碳管片段143兩 端通過凡德瓦爾力相互連接。該奈米碳管片段143包括多 個長度相等且相互平行排列的奈米碳管145。當所述奈米 碳管拉膜結構包括多層奈米碳管膜相互重叠設置時，相鄰 兩層奈米碳管膜中的奈米碳管之間具有一交叉角度α，α 大於等於0度且小於等於90度。奈米碳管結構2〇2的厚度 越大，低頻效果越好，强度越大；奈米碳管結構2〇2的厚 度越小，高頻效果越好，發聲效率越高。根據奈米碳管結 201012238 構202的厚度不同，所述揚聲器200具有不同的頻響範圍， 具體可爲高頻揚聲器200、中頻揚聲器2〇〇或低頻揚聲器 • 200 ° . 所述揚聲器200可通過枯結劑、卡槽、釘扎結構等方 式固定設置於箱體210側壁上並覆蓋箱體21〇上的第一通 孔212。另，由於奈米峻管結構202中的奈米複管具有極 大的比表面積，在凡德瓦爾力的作用下，該奈米碳管結構 202本身有很好的粘附性，並且，該奈米碳管結構2〇2具 ❹有很好的自支撑性’故該揚聲器2〇〇可直接粘附在所述箱 體210的侧壁上。 進一步地’所述揚聲器200可進一步包括至少兩電極 204間隔設置並與該奈米碳管結構2〇2電連接。所述電極 204可間隔設置並固定在所述揚聲器200兩端或表面，用 於將外部音頻電信號輸入至揚聲器200,從而使所述揚聲 器200發聲。所述電極204由導電材料形成，其具體形狀 _結構不限。具體地’所述電極204可選擇爲層狀、棒狀、 塊狀或其它形狀。所述電極204的材料可選擇爲金屬、導 電聚合物、導電膠、金屬性奈米碳管、銦錫氧化物（IT〇) 等。本技術方案實施例中，所述電極204爲間隔塗附於所 述奈米碳管結構202表面的導電銀膠層。 由於所述電極204間隔設置’所述揚聲器2〇〇應用於 音箱20時能接入一定的阻值避免短路現象産生。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，該奈 米碳管結構202本身有很好的粘附性，故所述電極2〇4與 11 201012238 所述奈米碳管結構202之間可直接粘附固定，並形成报好 的電接觸，另，可採用導電粘結層將電極204粘附固定於 •奈米碳管結構202表面。 • 可理解，所述電極204爲可選擇的結構。所述外部音 頻電信號源可直接通過導線或電極引線等方式與所述奈米 碳管結構202電連接。另，任何可實現所述外部音頻電信 號源與所述奈米碳管結構202之間電連接的方式都在本技 _術方案的保護範圍之内。 可理解’當所述音箱20包括多個揚聲器200時，只需 其中至少一揚聲器200包括一奈米碳管結構2〇2即可。具 體地，可根據需要選擇其他類型的揚聲器，如振膜式揚聲 器或壓電式揚聲器等，與本技術方案中包括奈米碳管結構 202的揚聲器200 —並設置於音箱20内部，從而達到較 的發聲效果。 進一步地，根據揚聲器200的頻響範圍不同，該音箱 馨20可進一步包括一分頻器23〇設置於音箱2〇内部。請參 閱圖5,分頻器230的輸出端分別與多個與所述揚聲器2〇〇 電連接，音頻電信號通過分頻器23〇的輸入端輸入。分頻 器230用於將全頻段音頻電信號進行頻率分割，經過分頻 器230分頻的高頻㈣、中頻信號及低頻信號分別傳送至 高頻揚聲器2〇0、中頻揚聲器2〇〇、低頻揚聲器2〇〇，並通 過不同的揚聲器200發出聲音。 進一步地，當所述音箱20爲一有源音箱2〇時，可進 -步包括-功率放大電路24〇及一電源電路25〇，設置於 12 201012238 曰知20内。[5。該電源電路25〇與功率放大電路電連 接，用於提供該功率放大電路24〇的工作電壓。當該音箱 .20不包括分頻器230時’該功率放大電路24〇與揚聲器2〇〇 •電連接；當該音箱20包括分頻器咖時，該功率放大電路 240與該分頻器23G電連接’用於將外部輸人的音頻電信 號進行功率放大。可理解，當所述音箱2〇爲一無源音箱 20時，該音箱20與外部的功率放大器電連接。 ❹ 使用時，外部音頻電信號通過功率放大電路240放 大，放大的音頻信號輸入至分頻器23〇分爲不同頻段的音 頻信號，最後傳遞至相應的揚聲器2〇〇，使揚聲器2〇〇發 聲。 上述音箱20在使用時’由於奈米碳管結構2〇2具有較 小的熱容（小于2X10-4焦耳每平方厘米開爾文）和大的比 表面積，在輸入信號後，根據信號强度（如電流强度）的 變化，由奈米碳管結構2〇2組成的揚聲器2〇〇可均勻地加 碜熱周圍的氣體介質、迅速升降溫、產生周期性的溫度變化， 並和周圍氣體介質進行快速熱交換，使周圍氣體介質迅速 膨脹和收縮，將音頻電信號轉換爲熱能，從而改變奈米碳 管結構202周圍氣體介質密度，發出人耳可感知的聲音， 且所發出的聲音的頻率範圍較寬、發聲效果較好。故本技 ，方案實施例中，所述揚聲器2〇〇的發聲原理爲“電·熱-聲”的轉換，具有廣泛的應用範圍。 … 請參閱圖6,本技術方案第二實施例提供一種倒相式 音箱30，包括一箱體31〇及至少一揚聲器3〇〇，該揚聲器 13 201012238 ' 300設置於箱體310内部。該揚聲器300包括一奈米碳管 結構302及至少兩電極304間隔設置並與該奈米碳管結構 • 302電連接。 . 該倒相式音箱30的結構與第一實施例的密閉式音箱 20基本相同，其區別在於，該音箱30進一步包括至少一 倒相管316設置於箱體310内部。具體地，該箱體310具 有至少一第一通孔312與至少一第二通孔314。該倒相管 與該第二通孔314相連接。該揚聲器300正對箱體310的 ®第一通孔312設置，該揚聲器300可與第一實施例同樣地 覆蓋該第一通孔312。 請參閱圖7,該揚聲器300還可與該第一通孔312間 隔設置。具體地，該揚聲器300可通過固定於箱體内部的 支撐結構318設置。該支撑結構318可爲一框架結構，該 揚聲器300的奈米碳管結構302粘附固定於該框架結構上。 請參閱圖8,本技術方案第三實施例提供一種迷宮式 參音箱40，包括一箱體410及至少一揚聲器400，該揚聲器 400設置於箱體410内部。該揚聲器400包括一奈米碳管 結構402及至少兩電極404間隔設置並與該奈米碳管結構 402電連接。 該迷宮式音箱40的結構與第一實施例的密閉式音箱 20基本相同，其區別在於，該音箱40進一步包括多個擋 板416設置於箱體410内部。具體地，該箱體410具有至 少一第一通孔412與至少一第二通孔414。該多個擋板416 將箱體410内部分割形成至少一傳輸通道，該傳輸通道與 14 201012238 該第二通孔414相連。該揚聲器400正對箱體410的第一 通孔412設置。與第二實施例相同，該揚聲器400可覆蓋 •該第一通孔412，或與該第一通孔412間隔設置。 • 請參閱圖9，本技術方案第四實施例提供一種被動輻 射式音箱50，包括一箱體510及至少一揚聲器500，該揚 聲器500設置於箱體510内部。該揚聲器500包括一奈米 碳管結構502及至少兩電極504間隔設置並與該奈米碳管 結構502電連接。 ® 該被動輻射式音箱50的結構與第一實施例的密閉式 音箱20基本相同，其區別在於，該音箱50進一步包括至 少一無源錐盆516設置於箱體510内部。具體地，該箱體 410具有至少一第一通孔512與至少一第二通孔514。該無 源錐盆516設置於該第二通孔514上，並與該第二通孔514 相連接。與第二實施例相同，該揚聲器500可覆蓋該第一 通孔512，或與該第一通孔512間隔一定距離設置。該無 _緣錐盆516的材料爲振動膜材料，如紙質材料、樹脂、金 剛石、纖維素、碳化硼及陶瓷等。 請參閱圖10,本技術方案第五實施例提供一種號角式 音箱60，包括一箱體610及至少一揚聲器600，該揚聲器 600設置於箱體610内部。該揚聲器600包括一奈米碳管 結構602及至少兩電極604間隔設置並與該奈米碳管結構 602電連接。 該號角式音箱60的結構與第一實施例的密閉式音箱 20基本相同，其區別在於，該音箱60進一步包括至少一 15 201012238 號角616。具體地，該箱體610具有至少一第一通孔612。 該號角616具有一較大的第一端6162及較小的第二端 * 6164,該第一端6162設置於該第一通孔614上，並與第一 -通孔614相連。該揚聲器600覆蓋於該號角616的第二端 6164 ° 請參閱圖11，本技術方案第六實施例提供一種音箱 70，包括一箱體710及至少一揚聲器700，該揚聲器700 設置於箱體710内部。該揚聲器700包括一奈米碳管結構 ® 702及至少兩電極704間隔設置並與該奈米碳管結構702 電連接。 該音箱70的結構與第一實施例的密閉式音箱20基本 相同，其區別在於，該音箱70進一步包括至少一無源錐盆 716。具體地，該箱體710具有至少一第一通孔712。該無 源錐盆716具有一較大的第一端7162及較小的第二端 7164，該第一端7162設置於該第一通孔714上，並與第一 ⑩通孔714相連。該揚聲器700覆蓋於該無源錐盆716的第 二端7164。該無緣錐盆716的材料爲振動膜材料，如紙質 材料、樹脂、金剛石、纖維素、碳化硼及陶瓷等。 可理解，該音箱的結構不限於上述實施例中的音箱結 構，其可為上述多種結構共同組成的複合式結構，也可為 其它音箱結構，只要音箱中的揚聲器包括一奈米碳管結構 即可。 本技術方案實施例提供的音箱具有以下優點：其一， 由於所述音箱中的揚聲器可僅包括奈米碳管結構，無需磁 16 201012238 鐵等其它複雜結構，故該音箱的結構較爲簡單，有利於降 低該音箱的成本。其二，該音箱利用外部輪入的音頻電信 .號造成該揚聲器溫度變化，從而使其周圍氣體介質迅速膨 .脹和收縮，進而發出聲波，無需振膜，故該揚聲器組成的 音箱可在無磁的條件下工作。其三，由於奈米碳管結構具 有^、的熱容和大的比表面積，在輸入信號後，根據信號 强度（如電流强度）的變化，由至少一層奈米碳管結構組 參成的揚聲器可均句地加熱周圍的氣體介質、迅速升降温、 産生周期性的溫度變化，並和周圍氣體介質進行快速熱交 換’使周圍氣體介質迅速膨脹和收縮，發出人耳可感知的 聲音，且所發出的聲音的頻率範圍較寬（庇〜丄糧叫、 發聲强度可it 100dB聲壓、級、發聲效果較好。其四，由於 不米碳管具有較好的機械强度和韌性，耐用性較好，從而 有利於製備由奈米碳管結構組成的各種形狀、尺寸的音 箱’進而方便地應用於各種領域。其五，由於奈米碳管具 ❹有極大的比表面積，故奈米碳管結構具有較好的枯附性， 可直接枯附在日箱的箱體上’從而使該音箱具有更簡單的 結構。 綜上所述，本發明確已符合發明專利之要件，遂依法 提出專利申請。惟’以上所述者僅為本發明之較佳實施例， 自不月b以此限制本案之申請專利範圍。舉凡習知本案技藝 之人士援依本發明之精神所作之等效修飾或變化，皆應涵 蓋於以下申請專利範圍内。 17 201012238 【圖式簡單說明】 圖1係先前技術中音箱的結構示意圖。 圖2係本技術方案第一實施例音箱的結構示意圖。 圖3係本技術方案第一實施例音箱中奈米碳管結構的 結構示意圖。 圖4係本技術方案第一實施例音箱中奈米碳管結構的 掃描電鏡照片。 圖5係本技術方案第一實施例音箱的連接關係示意201012238 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a sound box', and more particularly to a speaker based on a carbon nanotube. [Prior Art] Speakers are divided into active speakers and passive speakers. Active speakers typically include a case, a speaker placed in the case, a crossover, a power amplifier, and a power source that drives the power amplifier. Passive speakers generally only include a cabinet and a speaker disposed in the cabinet. The cabinet of the speaker is generally a casing having a certain shape and volume, and the material thereof is a material with good sound absorption effect such as wood, plastic or ceramic. The speaker is used to convert an electrical signal into a sound signal. Specifically, the speaker can convert a range of audio electric power signals into a audible sound having a small distortion and a sufficient sound pressure level by a transducing mode. There are many types of previous speakers, and according to their working principle, they are divided into: electric speakers, electromagnetic cymbals, electrostatic speakers and piezoelectric speakers. Although they work in different ways, they generally drive the surrounding air by generating mechanical vibrations, causing the air medium to fluctuate to achieve "electricity, force, sound, and conversion. Among them, electric speakers are the most widely used. Referring to Fig. 1, the prior passive speaker 1 using an electric speaker generally includes a box no and a speaker set inside the box no. The speaker 1 is usually composed of three parts: a voice coil, a magnet, and The voice coil usually uses an energized conductor. When an audio current signal is input into the voice coil, the voice coil is equivalent to a current-carrying conductor. Due to the 6 201012238 'magnetic field generated by the magnet, the current-carrying conductor is in the magnetic field. In the middle, the ring will be subjected to a force that is proportional to the audio current and the direction changes with the direction of the audio current. Therefore, the voice coil will vibrate under the magnetic field generated by the magnet. And the vibrating vibration is generated, and the air before and after the diaphragm is also vibrated, and the electric signal is converted into sound waves to radiate around. However, the electric speaker H 100 is used. (4) The structure is more complicated, and it must work under magnetic conditions. Since the early 1990s, carbon nanotubes have been used (see He ical microtubules of graphitic carbon, Nature, Sumio lijima, vol 354, p56). (1991)) The nanomaterials represented by the company have attracted great attention due to their unique structure and properties. In recent years, with the deepening of research on carbon nanotubes and rice-killing materials, their broad application prospects are constantly emerging. For example, due to the unique electromagnetic, optical, mechanical, and chemical properties of carbon nanotubes, a large number of applications for field emission electron sources, sensors, new optical materials, soft ferromagnetic materials, etc. It has been reported. However, in the prior art, nano carbon tubes have not been found in the field of acoustics. In view of this, it is necessary to provide a speaker that is simple in structure and can be operated under non-magnetic conditions. 'It includes: a case; and at least one speaker disposed inside the case, wherein: at least one speaker comprises a carbon nanotube structure The carbon nanotube structure converts the audio electric signal into heat energy, thereby heating the surrounding gas medium to emit sound waves. Compared with the prior art, the speaker has the following advantages: First, the speaker of 7 201012238 == only includes the carbon nanotubes. Structure, no magnets, etc. 2] = 17 The structure of the speaker is relatively simple, which is beneficial to reduce the: the audio signal of the input of the n = tube junction r input 收缩 shrinks and then emits sound waves, no diaphragm is required, so the speaker The composition can work under non-magnetic conditions. The heat capacity and the large specific surface area of the carbon nanotube structure are three layers, after the input signal, according to the change of the signal, the intensity (such as the current intensity), The sounding material composed of the carbon nanotube structure uniformly adds the surrounding gas medium, rapidly rises and falls, generates periodic temperature changes, and rapidly heats the heat with the gas medium: the vertical expansion of the surrounding gas medium and (4) It emits a sound that can be perceived by the human ear, and the sound emitted has a wide frequency range (iHz~leg Hz) and sounds better. Fourthly, since the carbon nanotubes have better mechanical strength and the better 'durability', it is advantageous to prepare a speaker of various shapes and sizes composed of a carbon nanotube structure, and is thus conveniently applied to various fields. Fifth, since the carbon nanotube has a large specific surface area, the carbon nanotube structure has good adhesion and can be directly adhered to the inside of the cabinet of the speaker, thereby making the speaker have a simpler structure. [Embodiment] Hereinafter, a speaker of an embodiment of the present technical solution will be described in detail with reference to the accompanying drawings. The technical solution provides a speaker, the speaker includes a box body; and at least one speaker' is disposed inside the box body. Referring to FIG. 2, a first embodiment of the present technical solution provides a sealed speaker 20, which includes a case 21〇 and at least one speaker 2〇〇. The 8 201012238 housing 210 has at least one first through hole 212 having a substantially equal area with the first through hole 212 and covering the first through hole 212 of the housing 21 . The casing 210 forms a closed space with the speaker 200 covering the first through hole 212 of the casing 21〇. Specifically, the speaker 200 covers the first through hole 212 from the inside of the case 210. The material of the la body 210 is a material having good sound absorbing properties and a certain strength such as wood, diamond, glass, quartz, ceramic, plastic or resin.至少 The at least one speaker 200 includes a carbon nanotube structure 2〇2. The carbon nanotube structure 202 is layered or otherwise shaped and has a large specific surface area. Specifically, the carbon nanotube structure 202 may be a composite structure composed of at least one layer of carbon nanotube film, at least one nanocarbon line structure, or the carbon nanotube film and a linear structure. The carbon nanotube structure 2〇2 includes uniformly distributed carbon nanotubes, and the carbon nanotubes are tightly bonded by van der Waals force. The carbon nanotubes in the carbon nanotube structure 202 are disordered or ordered. In a carcass manner, when the carbon nanotube structure 202 includes a disordered arrangement of carbon nanotubes, the carbon nanotubes are intertwined or isotropically aligned; when the carbon nanotube structure 202 comprises an ordered array of nanocarbons When the tube is in the tube, the carbon nanotubes are arranged in a preferred orientation along one or more directions. The carbon nanotube structure 2〇2 has a thickness of 0.5 nm to 1 mm. If the thickness of the carbon nanotube structure 2〇2 is too large, the specific surface area is reduced, and the heat capacity is increased; the thickness of the carbon nanotube junction #2〇2 is too large, and the mechanical strength is poor, and the durability is poor. not good enough. Preferably, the carbon nanotube structure 202 has a thickness of 5 G nanometers. # The carbon nanotube structure plus thickness is relatively small, for example less than 1 〇 micron, the carbon nanotube structure pro 9 201012238 degrees. The carbon nanotubes in the carbon nanotube structure 202 include a plurality of carbon nanotubes, double-walled carbon nanotubes, and multi-walled carbon nanotubes. The remainder of the single-walled nanocarbon f is G5 (four) species. The diameter of the double-walled carbon nanotubes is U nanometers ~ 50 nanometers, and the wall: the carbon nanotubes are straight... 5 nanometers to 50 nanometers. It can be understood that the specific structure of the tube structure 202 is not limited, and the σ side is not without the carbon layer, and the other two conditions are satisfied, namely: the shape of the crucible and the larger The specific surface area; including the average sentence; and the thickness of G. 5 nm ~ 1 (four). Preferably, the not only slave structure 202 comprises an ordered array of carbon nanotubes, the glutinous rice carbons being arranged in a preferred orientation. In the embodiment of the technical solution, the I m carbon tube structure 202 is a carbon nanotube film structure, which comprises a layer of layers or a plurality of layers of carbon nanotubes obtained from the carbon material. membrane. Referring to FIG. 3 and FIG. 4', the nanotube film of the carbon nanotube structure 2〇2 includes a plurality of carbon nanotube tubes which are connected end to end in a pulling direction and are arranged in a preferred orientation and are uniformly hook-shaped. Specifically, the carbon nanotube film comprises a plurality of end-to-end and aligned carbon nanotube segments 143, each of the carbon nanotube segments 143 having substantially the same length, and the carbon nanotube segments 143 are passed at both ends. Van der Valli is connected to each other. The carbon nanotube section 143 includes a plurality of carbon nanotubes 145 of equal length and arranged in parallel with each other. When the carbon nanotube film structure comprises a plurality of layers of carbon nanotube film overlapping each other, the carbon nanotubes in the adjacent two layers of carbon nanotube film have an intersection angle α, and α is greater than or equal to 0 degrees. And less than or equal to 90 degrees. The larger the thickness of the carbon nanotube structure 2〇2, the better the low frequency effect and the higher the strength; the smaller the thickness of the carbon nanotube structure 2〇2, the better the high frequency effect and the higher the sounding efficiency. Depending on the thickness of the carbon nanotube junction 201012238, the speaker 200 has a different frequency response range, specifically a tweeter 200, an intermediate frequency speaker 2 or a low frequency speaker • 200 °. The first through hole 212 disposed on the side wall of the casing 210 and covering the casing 21 is fixed by a deadener, a card slot, a pinning structure or the like. In addition, since the nanotubes in the nanotube structure 202 have a large specific surface area, the carbon nanotube structure 202 itself has good adhesion under the action of van der Waals force, and the nai The carbon nanotube structure 2〇2 has good self-supporting property, so the speaker 2〇〇 can be directly adhered to the side wall of the casing 210. Further, the speaker 200 may further include at least two electrodes 204 spaced apart and electrically connected to the carbon nanotube structure 2〇2. The electrodes 204 may be spaced apart and fixed at both ends or surfaces of the speaker 200 for inputting an external audio electrical signal to the speaker 200 to cause the speaker 200 to sound. The electrode 204 is formed of a conductive material, and its specific shape is not limited. Specifically, the electrode 204 can be selected as a layer, a rod, a block, or other shape. The material of the electrode 204 may be selected from the group consisting of a metal, a conductive polymer, a conductive paste, a metallic carbon nanotube, an indium tin oxide (IT〇), and the like. In the embodiment of the technical solution, the electrode 204 is a conductive silver paste layer which is applied to the surface of the carbon nanotube structure 202 at intervals. Since the electrodes 204 are spaced apart, the speaker 2 can be applied to the speaker 20 to access a certain resistance value to avoid short circuit. Since the carbon nanotube has a very large specific surface area, the carbon nanotube structure 202 itself has good adhesion under the action of the van der Waals force, so the electrode 2〇4 and 11 201012238 the nanometer The carbon tube structures 202 can be directly adhered to each other and form a reported electrical contact. Alternatively, the conductive bonding layer can be used to adhere the electrode 204 to the surface of the carbon nanotube structure 202. • It will be appreciated that the electrode 204 is of an alternative construction. The external audio electrical signal source can be electrically connected to the carbon nanotube structure 202 directly through wires or electrode leads or the like. In addition, any manner in which the electrical connection between the external audio source and the carbon nanotube structure 202 can be achieved is within the scope of the present technology. It can be understood that when the speaker 20 includes a plurality of speakers 200, only at least one of the speakers 200 needs to include a carbon nanotube structure 2〇2. Specifically, other types of speakers, such as a diaphragm speaker or a piezoelectric speaker, may be selected as needed, and the speaker 200 including the carbon nanotube structure 202 in the present technical solution is disposed inside the speaker 20, thereby achieving comparison. The sound effect. Further, the speaker 20 may further include a frequency divider 23 disposed inside the speaker 2 according to the frequency response range of the speaker 200. Referring to Fig. 5, the output terminals of the frequency divider 230 are electrically connected to the plurality of speakers 2A, respectively, and the audio electrical signals are input through the input terminals of the frequency divider 23A. The frequency divider 230 is configured to frequency-divide the full-band audio electrical signal, and the high-frequency (four), intermediate-frequency signal and low-frequency signal divided by the frequency divider 230 are respectively transmitted to the high-frequency speaker 2〇0 and the intermediate frequency speaker 2〇〇. The woofer is 2 〇〇 and sounds through different speakers 200. Further, when the speaker 20 is an active speaker 2, the step-by-step includes a power amplifier circuit 24 and a power circuit 25, which are disposed in the 12 201012238. [5. The power supply circuit 25 is electrically connected to the power amplifying circuit for supplying the operating voltage of the power amplifying circuit 24A. When the speaker .20 does not include the frequency divider 230, the power amplifier circuit 24 is electrically connected to the speaker 2; when the speaker 20 includes a frequency divider, the power amplifier circuit 240 and the frequency divider 23G The electrical connection 'is used for power amplification of an externally input audio electrical signal. It can be understood that when the speaker 2 is a passive speaker 20, the speaker 20 is electrically connected to an external power amplifier. ❹ In use, the external audio signal is amplified by the power amplifier circuit 240, and the amplified audio signal is input to the frequency divider 23, and is divided into audio signals of different frequency bands, and finally transmitted to the corresponding speaker 2〇〇, so that the speaker 2 emits a sound. . The above speaker 20 is in use 'because the carbon nanotube structure 2〇2 has a small heat capacity (less than 2X10-4 joules per square centimeter Kelvin) and a large specific surface area, after the input signal, according to the signal strength (such as current) The change of the intensity), the speaker 2 consisting of the carbon nanotube structure 2〇2, can uniformly add the surrounding gaseous medium, rapidly rise and fall temperature, generate periodic temperature changes, and perform rapid heat exchange with the surrounding gaseous medium. , the surrounding gas medium is rapidly expanded and contracted, and the audio electric signal is converted into heat energy, thereby changing the density of the gas medium around the carbon nanotube structure 202, emitting a sound that can be perceived by the human ear, and the sound frequency of the emitted sound is wide, The sound effect is better. Therefore, in the embodiment of the present invention, the sounding principle of the speaker 2〇〇 is “electrical/thermal-acoustic” conversion, and has a wide range of applications. Referring to FIG. 6, the second embodiment of the present invention provides an inverted speaker 30, which includes a box 31〇 and at least one speaker 3〇〇. The speaker 13201012238′300 is disposed inside the box 310. The speaker 300 includes a carbon nanotube structure 302 and at least two electrodes 304 spaced apart from each other and electrically connected to the carbon nanotube structure 302. The structure of the inverted speaker 30 is substantially the same as that of the closed speaker 20 of the first embodiment, except that the speaker 30 further includes at least one inverter tube 316 disposed inside the casing 310. Specifically, the casing 310 has at least one first through hole 312 and at least one second through hole 314. The inverter tube is connected to the second through hole 314. The speaker 300 is disposed facing the first through hole 312 of the casing 310, and the speaker 300 can cover the first through hole 312 in the same manner as the first embodiment. Referring to FIG. 7, the speaker 300 can also be spaced apart from the first through hole 312. Specifically, the speaker 300 can be disposed by a support structure 318 that is fixed to the inside of the cabinet. The support structure 318 can be a frame structure, and the carbon nanotube structure 302 of the speaker 300 is adhesively fixed to the frame structure. Referring to FIG. 8, a third embodiment of the present invention provides a labyrinth speaker 40, which includes a box 410 and at least one speaker 400. The speaker 400 is disposed inside the box 410. The speaker 400 includes a carbon nanotube structure 402 and at least two electrodes 404 spaced apart from each other and electrically coupled to the carbon nanotube structure 402. The structure of the labyrinth speaker 40 is substantially the same as that of the airtight speaker 20 of the first embodiment, except that the speaker 40 further includes a plurality of shutters 416 disposed inside the casing 410. Specifically, the case 410 has at least one first through hole 412 and at least one second through hole 414. The plurality of baffles 416 divide the interior of the casing 410 into at least one transmission passage, and the transmission passages are connected to the second through holes 414 of 14 201012238. The speaker 400 is disposed opposite the first through hole 412 of the casing 410. As with the second embodiment, the speaker 400 can cover the first through hole 412 or be spaced apart from the first through hole 412. Referring to FIG. 9, a fourth embodiment of the present invention provides a passive radiating speaker 50, which includes a case 510 and at least one speaker 500. The speaker 500 is disposed inside the case 510. The speaker 500 includes a carbon nanotube structure 502 and at least two electrodes 504 spaced apart from each other and electrically coupled to the carbon nanotube structure 502. The structure of the passive radiant speaker 50 is substantially the same as that of the closed type speaker 20 of the first embodiment, except that the speaker 50 further includes at least one passive cone 516 disposed inside the casing 510. Specifically, the box 410 has at least one first through hole 512 and at least one second through hole 514. The non-source cone 516 is disposed on the second through hole 514 and connected to the second through hole 514. The speaker 500 can cover the first through hole 512 or be spaced apart from the first through hole 512 as in the second embodiment. The material of the non-edge cone 516 is a diaphragm material such as paper material, resin, diamond, cellulose, boron carbide, and ceramics. Referring to FIG. 10, a fifth embodiment of the present invention provides a horn speaker 60, which includes a case 610 and at least one speaker 600. The speaker 600 is disposed inside the case 610. The speaker 600 includes a carbon nanotube structure 602 and at least two electrodes 604 spaced apart from each other and electrically connected to the carbon nanotube structure 602. The structure of the horn 60 is substantially the same as that of the closed speaker 20 of the first embodiment, except that the speaker 60 further includes at least one corner 616 of 201012238. Specifically, the case 610 has at least one first through hole 612. The horn 616 has a larger first end 6162 and a smaller second end * 6164. The first end 6162 is disposed on the first through hole 614 and connected to the first through hole 614. The speaker 600 is disposed on the second end 6164 of the horn 616. Referring to FIG. 11 , the sixth embodiment of the present invention provides a speaker 70 , which includes a box 710 and at least one speaker 700 . The speaker 700 is disposed in the box 710 . internal. The speaker 700 includes a carbon nanotube structure ® 702 and at least two electrodes 704 spaced apart from each other and electrically connected to the carbon nanotube structure 702. The structure of the speaker 70 is substantially the same as that of the closed speaker 20 of the first embodiment, except that the speaker 70 further includes at least one passive cone 716. Specifically, the case 710 has at least one first through hole 712. The non-source cone 716 has a larger first end 7162 and a smaller second end 7164. The first end 7162 is disposed on the first through hole 714 and connected to the first 10 through hole 714. The speaker 700 covers the second end 7164 of the passive cone 716. The material of the rimless cone 716 is a diaphragm material such as paper material, resin, diamond, cellulose, boron carbide, and ceramics. It can be understood that the structure of the speaker is not limited to the speaker structure in the above embodiment, and may be a composite structure composed of the above various structures, or may be other speaker structures, as long as the speaker in the speaker includes a carbon nanotube structure. can. The speaker provided by the embodiment of the technical solution has the following advantages: First, since the speaker in the speaker can only include a carbon nanotube structure, and the magnetic 16 201012238 iron and other complicated structures are not needed, the structure of the speaker is relatively simple. Helps reduce the cost of the speaker. Secondly, the speaker uses the external telecommunication audio telecommunication number to cause the temperature change of the speaker, so that the surrounding gas medium rapidly expands and expands, and then emits sound waves without a diaphragm, so the speaker composed of the speaker can be Working under magnetic conditions. Third, because the carbon nanotube structure has a heat capacity and a large specific surface area, after inputting the signal, according to changes in signal intensity (such as current intensity), the speaker is composed of at least one layer of carbon nanotube structure. It can uniformly heat the surrounding gas medium, rapidly raise and lower temperature, produce periodic temperature changes, and perform rapid heat exchange with the surrounding gas medium, so that the surrounding gas medium rapidly expands and contracts, giving a sound that can be perceived by the human ear. The frequency of the emitted sound is wide (the sheltered ~ 丄 grain call, the sound intensity can be it 100dB sound pressure, grade, sound effect is better. Fourth, because the carbon nanotubes have better mechanical strength and toughness, durability Therefore, it is advantageous to prepare a speaker of various shapes and sizes composed of a carbon nanotube structure, and is conveniently applied to various fields. Fifth, since the carbon nanotube has a large specific surface area, the carbon nanotube structure It has better dryness and can be directly attached to the box of the day box', so that the speaker has a simpler structure. In summary, the present invention has indeed met the invention. In view of the requirements, the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the patent application of the present invention is limited by the use of the present invention. Equivalent modifications or changes made by the spirit should be covered by the following patent application. 17 201012238 [Simplified illustration of the drawings] Fig. 1 is a schematic structural view of a prior art speaker. Fig. 2 is a first embodiment of the present invention. Figure 3 is a schematic view showing the structure of a carbon nanotube structure in a speaker according to a first embodiment of the present technical solution. Figure 4 is a scanning electron micrograph of a carbon nanotube structure in a speaker of the first embodiment of the present technical solution. The connection relationship of the speaker of the first embodiment of the technical solution is illustrated
圖6係本技術方案第二實施例音箱的結構示意圖。 圖7係本技術方案第二實施例具有支撑結構的音箱的 結構示意圖。 圖8係本技術方案第三實施例音箱的結構示意圖。 圖9係本技術方案第四實施例音箱的結構示意圖。 圖10係本技術方案第五實施例音箱的結構示意圖。 馨 圖11係本技術方案第六實施例音箱的結構示意圖。 【主要元件符號說明】 音箱 揚聲器 箱體 奈米碳管片段 奈米碳管 奈米碳管結構 電極 10, 20, 30, 40, 50, 60, 70 100, 200, 300, 400, 500, 600, 700 110, 210, 310, 410, 510, 610, 710 143 145 202, 302, 402, 502, 602, 702 204, 304, 404, 504, 604, 704 18 201012238 第一通孔 分頻器 •功率放大電路 .電源電路 第二通孔 倒相管 支撑結構 擋板 ) 無源錐盆 號角 第一端 第二端 312, 412, 512, 612, 712 414 716 ,7162 ,7164 196 is a schematic structural view of a speaker of a second embodiment of the present technical solution. Fig. 7 is a schematic structural view of a sound box having a support structure according to a second embodiment of the present technical solution. FIG. 8 is a schematic structural view of a speaker of a third embodiment of the present technical solution. FIG. 9 is a schematic structural view of a speaker of a fourth embodiment of the present technical solution. FIG. 10 is a schematic structural view of a speaker of a fifth embodiment of the present technical solution. 11 is a schematic structural view of a speaker of a sixth embodiment of the present technical solution. [Main component symbol description] Speaker speaker cabinet carbon nanotube segment nano carbon nanotube nano carbon tube structure electrode 10, 20, 30, 40, 50, 60, 70 100, 200, 300, 400, 500, 600, 700 110, 210, 310, 410, 510, 610, 710 143 145 202, 302, 402, 502, 602, 702 204, 304, 404, 504, 604, 704 18 201012238 First Through Hole Divider • Power Amplification Circuit. Power circuit second through-hole inverted tube support structure baffle) passive cone horn first end second end 312, 412, 512, 612, 712 414 716, 7162, 7164 19