TW201018256A - Ear phone - Google Patents

Ear phone Download PDF

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Publication number
TW201018256A
TW201018256A TW97140873A TW97140873A TW201018256A TW 201018256 A TW201018256 A TW 201018256A TW 97140873 A TW97140873 A TW 97140873A TW 97140873 A TW97140873 A TW 97140873A TW 201018256 A TW201018256 A TW 201018256A
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Taiwan
Prior art keywords
carbon nanotube
earphone
carbon
conversion device
electroacoustic
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TW97140873A
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Chinese (zh)
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TWI462600B (en
Inventor
Kai-Li Jiang
Lin Xiao
Zhuo Chen
Shou-Shan Fan
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Hon Hai Prec Ind Co Ltd
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Abstract

The present invention relates to an ear phone. The ear phone includes at least one enclosure, and at least one speaker disposed in the enclosure. The at least one speaker includes a carbon nanotube structure.

Description

201018256 九、發明說明: 【發明所屬之技術領域】 耳機本發明涉及-種耳機,尤其涉及一種基於奈米碳管的 .【先前技術】 .先諸财的耳機-般包括殼體及設 揚聲器。按揚聲器的工作原理可將耳機分爲電動ίίί 式、靜電式、氣動式及壓電式等類型。按耳機的佩戴 ❹可將耳機分爲難式、耳挂式及耳塞式等_ : 號的傳輸方式可將耳機分爲有線耳機及無線耳機等二= 耳機的殼體-般爲形狀與人耳大小相當的中空 其材料爲塑料或樹脂等。耳塞的殼體可設置於人耳的外耳 内,頭戴式及耳挂式耳機的殼體覆蓋於耳上。 耳機殼體内部的揚聲器用於將電信號轉換成聲音信 ,揚聲器可將一定範圍内的音頻電功率信號通 ❹過換此方式轉變爲失真小並具有足够聲廢級的可聽聲音。 先,的揚聲器的種類很多,根據其工作原理,分爲:電動 式揚聲器、電磁式揚聲器、靜電式揚聲器及壓電式揚聲器。 其均爲通過産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耳機1〇 一般 包括一殼體110、設置於殼體110内部的揚聲器1〇〇。該揚 聲器100通常由三部分組成··音圈1〇2、磁鐵1〇4及振膜 201018256 106。音圈102通常採用通電導體,當音圈102中輸入一個 音頻電流信號時,音圈102相當於一個載流導體。由於載 流導體在磁場中會受到洛侖茲力,音圈102放在所述磁鐵 104産生的磁場裏會受到一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。因此,音圈102就會 •在所述磁鐵104産生的磁場作用下産生振動,並帶動振膜 106振動,振膜106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,該採用電動式揚聲器100的 ⑩耳機10的結構較爲複雜,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Helical microtubules of graphitic carbon, Nature, Sumio Iijima, 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。然而,單根奈米碳管為奈米級, 大量奈米碳管易團聚,不易分散形成均勻的奈米碳管膜, 從而限制了奈米碳管在宏觀領域的應用。姜開利等人於中 華民國97年9月24曰申請的申請案號數為091132618揭 示了一種奈米碳管繩,該奈米碳管繩包括首尾相連的奈米 碳管束片段,並且,該奈米碳管繩中的奈米碳管基本沿同 一方向排列。請參閱圖2,於理想狀態下,每一奈米碳管 束片段143包括多個平行的奈米碳管145。然,於實際狀 態下奈米碳管束片段中少量奈米碳管可能具有一定傾斜, 或雜亂排列,奈米碳管繩中的也可能存在非首尾相連的奈 米碳管束片段或單根的奈米碳管。這種奈米碳管繩可以方 便的將奈米碳管用於宏觀領域。 201018256 近幾年來’隨著奈米碳管及奈米材料 入,其廣闊的應用前景不斷顯現出 、斷冰 管所具有的獨特的電磁學、光學二例二:於奈米碳 量有關其在場發射電子评、傳感器:、化學等性能,大 讲一 尾千,原傅感15、新型光學材料、敕纖 •材枓等領域的應用研究不斷被報道。然、而先前技 却尚未發現奈米碳管用於聲學領域。 η 有鑒於此,提供—種結構簡單,可在無 作的耳機實為必要。 干下工 ®【發明内容】 及至少一電聲轉換 一電聲轉換裝置包 一種耳機,其包括:至少一殼體; 農置設置於殼體内部;其中:所述至少 括一奈米碳管結構。201018256 IX. Description of the Invention: [Technical Field] The present invention relates to a type of earphone, and more particularly to a carbon nanotube-based device. [Prior Art] Earphones of the prior art generally include a housing and a speaker. The headphones can be divided into electric ίίί, electrostatic, pneumatic and piezoelectric types according to the working principle of the speaker. According to the wearing of the earphones, the earphones can be divided into hard-type, ear-hook and earbuds. _: The transmission mode can divide the earphone into wired earphones and wireless earphones, etc. 2 = the casing of the earphone - the shape and the size of the human ear The equivalent hollow material is plastic or resin. The housing of the earplug can be placed in the outer ear of the human ear, and the housing of the headphone and earphone can be placed over the ear. The speaker inside the earphone housing is used to convert the electrical signal into a sound signal, and the speaker can convert the audio electric power signal within a certain range into an audible sound with small distortion and sufficient sound level. First of all, there are many types of speakers. According to their working principles, they are divided into: electric speakers, electromagnetic speakers, electrostatic speakers and piezoelectric speakers. All of them use the mechanical vibration to push the surrounding air to make the air medium fluctuate, thus achieving the "electric_force_sound," conversion. Among them, the electric speaker is the most widely used. Please refer to Figure 1, the previous electric system The earphone 1 of the speaker generally includes a casing 110 and a speaker 1 disposed inside the casing 110. The speaker 100 is usually composed of three parts: a voice coil 1〇2, a magnet 1〇4, and a diaphragm 201018256 106 The voice coil 102 generally employs an energizing conductor, and when an audio current signal is input in the voice coil 102, the voice coil 102 corresponds to a current carrying conductor. Since the current carrying conductor is subjected to Lorentz force in the magnetic field, the voice coil 102 is placed. The magnetic field generated by the magnet 104 is subjected to a force that is proportional to the audio current and varies in direction with the direction of the audio current. Therefore, the voice coil 102 is generated by the magnetic field generated by the magnet 104. Vibrating and driving the diaphragm 106 to vibrate, the air in front of and behind the diaphragm 106 also vibrates, and the electrical signal is converted into sound waves to radiate around. However, the earphone 1 using the electric speaker 100 The structure of 0 is complex and must work under magnetic conditions. Since the early 1990s, carbon nanotubes have been used (see Helical microtubules of graphitic carbon, Nature, Sumio Iijima, vol 354, p56 (1991). )) The nanomaterials represented by the company have attracted great attention due to their unique structure and properties. However, the single carbon nanotubes are nano-scale, and a large number of carbon nanotubes are easy to agglomerate and are not easily dispersed to form uniform nanometers. The carbon tube film, which limits the application of the carbon nanotubes in the macroscopic field. The application number of the application of the carbon nanotubes in the Republic of China on September 24, 1997 is 091,132,618, which discloses a nano carbon tube rope, the nano carbon The pipe rope comprises a bundle of carbon nanotube bundles connected end to end, and the carbon nanotubes in the carbon nanotube rope are arranged substantially in the same direction. Referring to Fig. 2, in an ideal state, each carbon nanotube bundle segment 143 Including a plurality of parallel carbon nanotubes 145. However, in the actual state, a small number of carbon nanotubes in the carbon nanotube bundle segment may have a certain inclination, or disorderly arrangement, and there may also be non-end-to-end connection in the carbon nanotube rope. Nai Carbon tube bundle segment or single carbon nanotube. This nano carbon tube rope can conveniently use nano carbon tubes for macroscopic fields. 201018256 In recent years, 'with nano carbon tubes and nano materials, it is vast The application prospects are constantly showing the unique electromagnetics and optics of the ice-breaking tube. Two cases are two: the carbon content of the nano-carbon is related to its on-site emission electronic evaluation, sensor: chemical, etc. Fu Yan 15, application research in the fields of new optical materials, fiber, and materials has been reported. However, the previous technology has not found nano carbon tubes used in the field of acoustics. η In view of this, the structure is simple and can be provided. It is necessary to have headphones that are not made. And the at least one electroacoustic conversion-electroacoustic conversion device comprises an earphone comprising: at least one casing; the agricultural device is disposed inside the casing; wherein: the at least one carbon nanotube is included structure.

相較於先前技術’所述耳機具有以下優點:其一由 2所述耳機中的電聲轉換裝置可僅包括奈米碳管結構無 需磁鐵等其它複雜結構,故該耳機的結構較爲簡單,有利 於降低該耳機的成本。其二,該耳機利用外部輸入的音頻 電七號造成該奈米碳管結構溫度變化,從而使其周圍介質 迅速膨脹和收縮,進而發出聲波,無需振膜,故該電聲轉 換裝置組成的耳機可在無磁的條件下工作。其三,由於奈 米碳管結構具有較小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,由一層狀奈米 碳管結構組成的電聲轉換裝置可均勻地加熱周圍的介質、 迅速升降溫、産生周期性的溫度變化,並和周圍介質進行 快速熱交換’使周圍介質迅速膨脹和收縮,發出人耳可感 201018256 知的聲音,且所發出的聲音的頻率範圍較寬(1Hz 〜100kHz)、發聲效果較好。其四,由於奈米碳管具有較好 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、尺寸的耳機,進而方便地應用 .於各種領域。 •【實施方式】 以下將結合附圖詳細說明本技術方案實施例的耳機。 本技術方案提供一種耳機,該耳機包括至少一殼體及 ⑩至少一電聲轉換裝置,該電聲轉換裝置設置於殼體内部。 請參閱圖3並結合圖4,本技術方案第一實施例提供 一種頭戴式耳機20,包括兩個殼體210、一連接體240及 至少兩個電聲轉換裝置200。該連接體240爲彎曲結構, 可戴於使用者頭上。該連接體240的兩端分別與兩個殼體 210連接。當該連接體240戴於使用者頭上時,該兩個殼 體210分別覆蓋於使用者耳上。 該殼體210爲一中空結構。該至少兩個電聲轉換裝置 200分別設置於兩個殼體210内部。進一步地,該耳機20 可包括至少一音頻數據線230通過所述殼體210内部與所 述電聲轉換裝置200電連接,並將音頻電信號傳導至該電 聲轉換裝置200。 該殼體210可進一步包括形成於殼體210上的至少一 通孔。該殼體210的材料爲質量較輕並具有一定强度的材 料,如:塑料或樹脂等。 該電聲轉換裝置200可覆蓋所述通孔。優選地,該電 201018256 聲轉換裝置200與所述通孔間隔並相對設置,從該電聲 換裝置200發出的聲音可通過通孔傳出耳機2〇外部。 所述至少-個電聲轉換裝£2〇〇包括—奈米碳管级構 搬。該奈米碳管結構202的形狀不限,優選爲層狀結構, 並具有較大比表面積。具體地,該奈米碳管結構2〇2可爲 至少-層奈米碳管膜、至少一奈米碳管線狀結構或所述夺 米碳管膜和奈米碳管線狀結構組成的複合結構。所述奈米 碳管結構202包括均勻分佈的奈米碳管,奈米碳管之間通 〇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。其中,無序指奈米碳管的排列方向 不固定,即沿各方向排列的奈米碳管數量基本相等;有序 指至少多數奈来碳管的排列方向具有一定規律,如基本沿 一個固定方向擇優取向或基本沿幾個較方向擇優取向。 具體地,當奈米碳管結構2〇2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;當奈来碳管結 ◎構202包括有序排列的奈米碳管時,奈米碳管沿一個方向 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 優選爲0.5奈米〜1毫米。所述奈米碳管結構观的厚度增 大,則比表面積减小,熱容增大;所述奈米碳管結構202 的厚度減小’則機械强度較差,耐用性不够好。本技術方 案實施例中,該奈米碳管結構2〇2的厚度爲5〇奈米。當該 不米碳官結構202厚度比較小時,例如小於1〇微米,該奈 米碳管結構202有很好的透明度,可用於製造具有透明殼 體210的透明耳機2〇。該奈米碳管結構2〇2中的奈米碳管 201018256 包括單壁奈米碳管、雙壁奈米碳管及多壁奈米碳管中的一 種或多種。所述單壁奈米碳管的直徑爲〇 5奈米〜5〇奈米, 所述雙壁奈米碳管的直徑爲L0奈米〜5〇奈米,所述''多'壁 奈米碳管的直徑爲1.5奈米〜50奈米。可以理解,所述卉 米碳管結構202的具體結構不限,優選地,該奈米碳管、= 構202滿足下述三個條件,即:爲層狀、線狀或其它形狀^ 且具有較大的比表面積及較小的單位面積熱容;包括均勻 分佈的奈米碳管;及厚度爲0.5奈米〜i毫米。更優選地, ©所述奈来碳管結構202包括有序排列的奈来碳管,奈米碳 管沿一固定方向擇優取向排列。 本技術方案實施例中,所述奈米碳管結構2〇2爲一奈 米石反管拉膜結構,其包括一層或重叠設置的多層從奈米碳 管陣列中直接拉取獲得的奈米碳管膜。該奈米碳管拉膜社 構與奈米碳管繩結構相似,區別在於,奈米碳管拉膜結構 可具有較大寬度,如0.5納米〜10釐米。請參閱圖5,進— ◎ ^地,所述奈米碳管結構2〇2中奈米碳管膜包括多個奈米 碳管/α拉取方向首尾相連並擇優取向排列且均勻分佈。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^段,每個奈米碳管片段具有大致相等的長度,且 奈米碳管片段兩端通過凡德瓦爾力相互連接。該 片段包括多個長度基本相等且相互基本平行排列的;米碳 管。當所述奈米破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(X,α大於等於〇度且小於等於9()度。奈^碳管 11 201018256 結構202的厚度越大,低頻效果越好,强度越大;奈米碳 官結構202的厚度越小,高頻效果越好,發聲效率越高。 根據奈米碳管結構202的厚度不同,所述電聲轉換裝置2〇〇 具有不同的頻響範圍,具體可爲高頻電聲轉換裝置2〇〇、 中頻電聲轉換裝置200或低頻電聲轉換裝置200。該多個 電聲轉換裝置200可彼此間隔的設置於所述殼體21〇内 部’達到多聲道發聲效果。 所述奈米碳管結構202可進一步包括多個奈米碳管線 ©狀結構。所述奈米碳管線狀結構包括多個通過凡德瓦爾力 首尾相連的奈米碳管片段,每個奈米碳管片段包括多個長 度基本相等且相互基本平行排列的奈米碳管。與奈米碳管 拉膜結構相似,所述奈米碳管線狀結構也爲從奈米碳管陣 列中直接拉取獲得。與奈米碳管拉膜結構不同之處在於, 該奈米碳管線狀結構的寬度較窄,宏觀呈一線狀。如圖6 所示,该奈米碳管線狀結構可經過扭轉形成一奈米碳管絞 ❹線結構。在上述絞線結構中,奈米碳管繞絞線結構的軸向 螺方疋狀旋轉排列。可以理解,該奈米碳管結構2〇2可爲一 個奈米碳管線狀結構盤繞形成一面形結構,或者爲多個奈 米碳官線狀結構編織構成或並排設置組成。另,該奈米碳 管結構202可由奈米碳管膜與奈米碳管線狀結構複合叠加 構成。該奈米碳管線狀結構的長度不限,直徑爲〇 5奈米 〜1毫米。 進一步地’所述電聲轉換裝置2〇〇可進一步包括至少 兩電極204間隔設置並與該奈米碳管結構2〇2電連接。所 12 201018256Compared with the prior art, the earphone has the following advantages: the electroacoustic conversion device in the earphone can include only a carbon nanotube structure and no other complicated structure such as a magnet, so the structure of the earphone is relatively simple. It is beneficial to reduce the cost of the earphone. Secondly, the earphone uses the externally input audio power No. 7 to cause the temperature change of the carbon nanotube structure, thereby rapidly expanding and contracting the surrounding medium, thereby generating sound waves without a diaphragm, so the earphone composed of the electroacoustic conversion device Can work under non-magnetic conditions. Third, because the carbon nanotube structure has a small heat capacity and a large specific surface area, after the input signal, the electroacoustic sound composed of a layer of carbon nanotube structure is changed according to the signal intensity (such as current intensity). The conversion device can uniformly heat the surrounding medium, rapidly raise and lower temperature, generate periodic temperature changes, and perform rapid heat exchange with the surrounding medium, so that the surrounding medium rapidly expands and contracts, and the human ear can sense the sound of 201018256. The sound emitted has a wide frequency range (1 Hz to 100 kHz) and sounds better. Fourthly, since the carbon nanotubes have good mechanical strength and toughness and good durability, it is advantageous for preparing earphones of various shapes and sizes composed of a carbon nanotube structure, and is convenient to apply in various fields. [Embodiment] Hereinafter, an earphone of an embodiment of the present technical solution will be described in detail with reference to the accompanying drawings. The technical solution provides an earphone, which comprises at least one casing and at least one electroacoustic conversion device, and the electroacoustic conversion device is disposed inside the casing. Referring to FIG. 3 and FIG. 4, a first embodiment of the present invention provides a headset 20 including two housings 210, a connecting body 240, and at least two electroacoustic converting devices 200. The connecting body 240 has a curved structure and can be worn on the user's head. Both ends of the connecting body 240 are respectively connected to the two housings 210. When the connector 240 is worn on the user's head, the two housings 210 respectively cover the user's ears. The housing 210 is a hollow structure. The at least two electroacoustic transducing devices 200 are disposed inside the two housings 210, respectively. Further, the earphone 20 can include at least one audio data line 230 electrically coupled to the electroacoustic conversion device 200 through the interior of the housing 210 and conduct audio electrical signals to the electro-acoustic conversion device 200. The housing 210 may further include at least one through hole formed in the housing 210. The material of the casing 210 is a material that is light in weight and has a certain strength, such as plastic or resin. The electroacoustic conversion device 200 can cover the through hole. Preferably, the electric power conversion device 200 is spaced apart from and opposite to the through hole, and sound emitted from the electric sound exchange device 200 can be transmitted out of the earphone 2 through the through hole. The at least one electroacoustic conversion package includes a carbon nanotube-level configuration. The shape of the carbon nanotube structure 202 is not limited, and is preferably a layered structure and has a large specific surface area. Specifically, the carbon nanotube structure 2〇2 may be a composite structure composed of at least a layer of carbon nanotube film, at least one nano carbon line structure, or the carbon nanotube film and a nano carbon line structure. . The carbon nanotube structure 202 includes uniformly distributed carbon nanotubes, and the carbon nanotubes are tightly coupled between the van der Waals forces. The carbon nanotubes in the carbon nanotube structure 202 are disordered or ordered. Among them, the disordered means that the arrangement direction of the carbon nanotubes is not fixed, that is, the number of carbon nanotubes arranged in all directions is substantially equal; the order means that at least most of the carbon nanotubes have a certain regular arrangement direction, such as a fixed along a fixed Orientation preferred orientation or preferred orientation along several more directions. Specifically, when the carbon nanotube structure 2〇2 includes a disorderly arranged carbon nanotube, the carbon nanotubes are entangled or isotropically aligned; when the carbon nanotube structure 202 comprises an ordered arrangement of nai When the carbon nanotubes are used, the carbon nanotubes are arranged in a preferred orientation in one direction or in multiple directions. The thickness of the carbon nanotube structure 2〇2 is preferably 0.5 nm to 1 mm. When the thickness of the carbon nanotube structure is increased, the specific surface area is decreased and the heat capacity is increased; and the thickness of the carbon nanotube structure 202 is reduced, the mechanical strength is poor, and the durability is not good enough. In the embodiment of the technical solution, the carbon nanotube structure 2〇2 has a thickness of 5 nanometers. When the thickness of the carbonaceous structure 202 is relatively small, for example, less than 1 〇 micrometer, the carbon nanotube structure 202 has good transparency and can be used to fabricate a transparent earphone 2 having a transparent casing 210. The carbon nanotubes in the carbon nanotube structure 2〇2 201018256 include one or more of a single-walled carbon nanotube, a double-walled carbon nanotube, and a multi-walled carbon nanotube. The diameter of the single-walled carbon nanotube is 〇5 nm to 5 〇 nanometer, and the diameter of the double-walled carbon nanotube is L0 nanometer ~ 5 〇 nanometer, the ''multi' wall nanometer) The diameter of the carbon tube is from 1.5 nm to 50 nm. It can be understood that the specific structure of the carbon nanotube structure 202 is not limited. Preferably, the carbon nanotubes and the structure 202 satisfy the following three conditions, namely, layered, linear or other shapes and have Large specific surface area and small unit area heat capacity; including uniformly distributed carbon nanotubes; and thickness of 0.5 nm to i mm. More preferably, the carbon nanotube structure 202 comprises an ordered array of carbon nanotubes, the carbon nanotubes being arranged in a preferred orientation in a fixed orientation. In the embodiment of the technical solution, the carbon nanotube structure 2〇2 is a nanometer stone reverse tube tensile film structure, which comprises a layer or overlapping layers of nanometers directly obtained from the carbon nanotube array. Carbon tube membrane. The nano carbon tube tensile membrane structure is similar to the nano carbon tube rope structure, except that the nano carbon tube membrane structure can have a large width, such as 0.5 nm to 10 cm. Referring to FIG. 5, the carbon nanotube film of the carbon nanotube structure 2〇2 includes a plurality of carbon nanotubes/α pulling directions connected end to end and arranged in a preferred orientation and uniformly distributed. Specifically, the carbon nanotube film comprises a plurality of end-to-end and aligned nano carbon segments, each of the carbon nanotube segments having substantially equal lengths, and the carbon nanotube segments are flanked by van der Waals. Forces are connected to each other. The segment comprises a plurality of carbon nanotubes of substantially equal length and arranged substantially parallel to one another; When the nano tube-breaking membrane structure comprises a plurality of layers of carbon nanotube membranes overlapping each other, the carbon nanotubes in the adjacent two layers of carbon nanotube membranes have an intersection angle (X, α is greater than or equal to 〇) Degree is less than or equal to 9 () degrees. Na 2 carbon tube 11 201018256 The greater the thickness of the structure 202, the better the low frequency effect, the greater the strength; the smaller the thickness of the nano carbon official structure 202, the better the high frequency effect, the sound efficiency According to the thickness of the carbon nanotube structure 202, the electroacoustic conversion device 2 has different frequency response ranges, specifically, the high frequency electroacoustic conversion device 2, and the intermediate frequency electroacoustic conversion device 200. Or a low-frequency electroacoustic conversion device 200. The plurality of electro-acoustic conversion devices 200 can be disposed at a distance from each other inside the casing 21 to achieve a multi-channel sounding effect. The carbon nanotube structure 202 can further include a plurality of a nanocarbon pipeline-like structure. The nanocarbon pipeline-like structure includes a plurality of carbon nanotube segments connected end to end by a van der Waals force, each of the carbon nanotube segments comprising a plurality of substantially equal lengths and substantially parallel to each other Arranged carbon nanotubes. With nano The tubular membrane structure is similar, and the nanocarbon pipeline-like structure is also directly drawn from the carbon nanotube array. The difference from the nanocarbon tubular membrane structure is that the width of the nanocarbon pipeline structure is It is narrower and has a macroscopic shape. As shown in Fig. 6, the nanocarbon pipeline structure can be twisted to form a carbon nanotube twisted wire structure. In the above stranded structure, the carbon nanotube twisted wire structure The axial carbon nanotubes are arranged in a rotating manner. It can be understood that the carbon nanotube structure 2〇2 can be coiled into a one-sided structure for a nano carbon line structure, or can be knitted by a plurality of nano carbon official line structures. Or, the composition is arranged side by side. In addition, the carbon nanotube structure 202 may be formed by a composite superposition of a carbon nanotube membrane and a nanocarbon pipeline structure. The length of the nanocarbon pipeline structure is not limited, and the diameter is 〇5 nm~ 1 mm. Further, the electroacoustic conversion device 2 can further include at least two electrodes 204 spaced apart and electrically connected to the carbon nanotube structure 2〇2. 12 201018256

述電極204可間隔設置並固定在所述電聲轉換裝置細兩 端或表面,用於將外部音頻電信號通過音頻數據線23〇輸 入至電聲轉換裝置·,從而使所述電聲轉換裝置細發 聲。當奈米碳管結構202中的奈米碳管爲沿一定方向有序 排列時,優選地,所述奈米碳管的排列方向沿一個電極綱 至另-個電極204的方向延伸,兩電極204之間應具有一 基本相等的間距,從而使兩電極2〇4之間的奈米碳管能够 具有一基本相等的電阻值。優選地,所述電極2〇4的長度 大於奈米碳管結構202的寬度,從而可使整個奈米碳管結 構202均得到利用。所述電極2〇4使音頻電信號均勻地導 入奈米碳管結構202中,奈米碳管結構2〇2中的奈米碳管 將電能轉換成熱能,加熱周圍介質,改變周圍介質的密度 發出聲音。該介質可包括氣體介質或液體介質。 X 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可選择爲層狀、棒狀、塊狀或 ❹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,所述電聲轉換裝置2〇〇包括兩個電 極204,所述電極204爲間隔塗附於所述奈米碳管結構2〇2 表面的導電銀膠層。 具體地,請參閱圖8,所述兩個電極204間隔塗附於 奈米碳管結構202表面當奈米碳管結構2〇2爲沿一定方向 有序排列時,所述電極204間隔設置,奈米碳管結構2〇2 中的奈米碳管的排列方向沿一電極204指向另一電極2〇4。 13 201018256 另,請參閱圖7,所述奈米碳管結構202爲圓形時, 其中一個電極204可塗附於所述奈米碳管結構202的外 圍,另一電極204可塗附於所述奈米碳管結構202的中心。 所述奈米碳管結構202中,奈米碳管爲沿一電極204至另 一電極204的方向放射狀排列。具體地,該奈米碳管結構 202可爲多個奈米碳管線狀結構或寬度較窄的奈米碳管膜 沿放射狀排列形成。 由於所述電極204間隔設置,所述電聲轉換裝置200 ❹應用於耳機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204與所述奈米碳管結構202之間可直接粘附固定,並 形成很好的電接觸,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。 可以理解,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音頻數據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。 所述電聲轉換裝置200可通過粘結劑、卡槽、釘扎結 構等方式固定設置於殼體210内部。具體地,該耳機20 可進一步包括一支撑結構220。該支撑結構220固定於殼 體210内部,或與該殼體210 —體成型形成。所述電聲轉 換裝置200通過該支撑結構220支撑,並與所述殼體210 201018256 間隔設置。 所述支撑結構220主要起支撑作用,其形狀不限。具 體地,該支撑結構220也可爲一框架結構、杆狀結構或不 規則形狀結構。此時,該電聲轉換裝置200部分與該支撑 結構220相接觸,其餘部分懸空設置。此種設置方式可使 該電聲轉換裝置200與空氣或周圍介質更好地進行熱交 換。該電聲轉換裝置200與空氣或周圍介質接觸面積更 大,熱交換速度更快,因此具有更好的發聲效率。本技術 ❿方案實施例中,該支撑結構220爲形成於所述殼體210内 部的環狀凸起結構。 另,該支撑結構220可爲一平面或曲面結構,並具有 一表面。此時,該電聲轉換裝置200直接設置並貼合於該 支撑結構220的表面上。由於該電聲轉換裝置200整體通 過支撑結構220支撑,因此該電聲轉換裝置200可承受强 度較高的音頻信號輸入,從而具有較高的發聲强度。 該支撑結構220的材料爲絕緣材料或導電性較差的材 料,具體可爲一硬性材料,如金剛石、玻璃、陶瓷或石英。 另,所述支撑結構220還可爲具有一定强度的柔性材料, 如塑料、樹脂或紙質材料。優選地,該支撑結構220的材 料應具有較好的絕熱性能,從而防止該奈米碳管結構220 産生的熱量過度的被該支撑結構220吸收,無法達到加熱 周圍介質進而發聲的目的。另,該支撑結構220應具有一 較爲粗糙的表面,從而可使設置於上述支撑結構220表面 的奈米碳管結構202與空氣或其他外界介質具有更大的接 15 201018256 觸面積’有利於提高所述耳機20的發聲嗖果 當該耳機 200可直 可以理解,該支撑結構220爲可選擇結構, 20不包括該支律結構220時,所述電聲轉換裝 接設置於殼體210的内壁上。 ' 另,由於奈米碳管結構2G2中的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2〇2 本身有很好的枯附性,並且,該奈米碳管結構2〇2具有很 好的自支撐性’故該電聲轉換裝置2⑽可直㈣附在所述 ©殼體210的侧壁上。 可以理解,所述一個殼體21〇内部可設置多個電聲轉 換裝置200,從而達到多聲道發聲效果。該多個電聲轉換 裝置200可爲不同類型的揚聲器,如電動式揚聲器、壓電 式揚聲器等。該多個電聲轉換裝置2〇〇彼此相互配合,只 要其中一個電聲轉換裝置200包括一奈米碳管結構202即 可。 進一步地’該頭戴式耳機20可包括兩個海綿罩體 250 ’覆蓋所述殼體210,起到緩衝耳部壓力的作用。另, 該頭戴式耳機20可包括一麥克風(圖未示)與所述連接體 240相連接。另,該頭戴式耳機2〇可包括一無線信號接收 單元(圖未示)設置於殼體210内部,並與所述電聲轉換 裝置200電連接,從而使耳機20接收無線音頻信號。 上述耳機20在使用時,由於奈米碳管結構202具有較 小的單位面積熱容和大的比表面積。具體地,該奈米碳管 結構202的單位面積熱容小於2xl0·4焦耳每平方厘米克爾 16 201018256 文。優選地’小於1χ1〇-4焦耳每平方厘米克爾文。本實施 例中,由於該奈米碳管結構2〇2爲一直接從奈米碳管陣列 取得到的奈米碳管拉臈結構,具有更小的厚度,該奈 米碳管結構202的單位面積熱容爲17χ1〇-6焦耳每平方厘 米克爾文。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組成的電聲轉換裝置2〇〇可 均勻地加熱周圍的氣體介質、迅速升降溫、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、發聲效果較好。如圖9所示: 採用四層奈米碳官薄膜重叠設置形成的奈米峻管結構 用於耳機20的發聲强度可達1〇5分貝聲壓級,發聲頻率範 圍爲1赫茲至10萬赫茲(即1Ηζ〜100kHz)。故本技術方案 實施例中,所述電聲轉換裝置200的發聲原理爲“電熱_ 聲”的轉換,具有廣泛的應用範圍。 Q 請參閱圖10並結合圖11,本技術方案第二實施例提 供一種耳塞式耳機30’該耳機包括一殼體31〇及一電聲轉 換裝置300。該破體310爲一中空結構,該電聲轉換裝置 3〇〇設置於殼體310内部。進一步地,該耳機3〇可包括至 少一音頻數據線330通過所述殼體310内部與所述電聲轉 換裝置300電連接,並將音頻電信號傳導至該電聲轉換裝 置 300。 該殼體310可進一步包括形成於殼體31〇上的至少一 通孔312。該殼體310的材料爲質量較輕並具有一定强度 17 201018256 的材料,如:塑料或樹脂等。 該電聲轉換裝置300可覆蓋所述通孔312。優選地, 該電聲轉換裝置300與所述通孔312間隔並相對設置,從 該電聲轉換裝置300發出的聲音可通過通孔312傳出耳機 30外部。 所述電聲轉換裝置300可通過粘結劑、卡槽、釘扎結 構等方式固定設置於殼體310内部。具體地,該耳機30 可進一步包括一支撑結構320。該支撑結構320固定於殼 ❿體310内部,或與該殼體310 —體成型形成。所述電聲轉 換裝置300通過該支撑結構320支撑,並與所述殼體310 間隔設置。 該耳塞式耳機30的電聲轉換裝置300結構與第一實施 例的頭戴式耳機20的電聲轉換裝置200結構基本相同。其 中,至少一個電聲轉換裝置300包括一奈米碳管結構302。 該電聲轉換裝置300可進一步包括至少兩電極304間隔設 置並與該奈米碳管結構302電連接。 翁 可以理解,該一個殼體310内部可設置多個電聲轉換 裝置300,從而達到多聲道發聲效果。該多個電聲轉換裝 置300可爲不同類型的揚聲器,如電動式或壓電式等。該 多個電聲轉換裝置300彼此相互配合,只要其中一個電聲 轉換裝置300包括一奈米碳管結構302即可。 請參閱圖12,本技術方案第三實施例提供一種耳挂式 耳機40,包括至少一殼體410、一挂鈎420及至少一電聲 轉換裝置400。該挂鈎420爲彎曲結構,可挂於使用者耳 18 201018256 上。當该挂鈎420挂於使用者耳上時,該殼體4i〇貼於使 用者耳侧。 該耳挂式耳機40的殼體310的内部結構與第一實施例 的耳塞式耳機20的殼體210的内部結構基本相同。該電聲 轉換裝置400設置於殼體41〇内部。其中,至少一個電聲 轉換裝置400包括一奈米碳管結構4〇2。該電聲轉換裝置 400可進一步包括至少兩電極4〇4間隔設置並與該奈米碳 管結構402電連接。 ❹ 可以理解,該一個殼體410内部可設置多個電聲轉換 裝置400,從而達到多聲道發聲效果。該多個電聲轉換裝 .置400可爲不同類型的揚聲器,如電動式或壓電式等。該 多個電聲轉換裝置4〇〇彼此相互配合,只要其中一個電聲 轉換裝置400包括一奈米碳管結構402即可。 進一步地,該耳挂式耳機4〇的可包括一麥克風(圖未 示)。另,該耳挂式耳機40可包括一無線信號接收單元(圖 ❹未示)及無線信號發送單元(圖未示)分別設置於殼體41〇 内部,並分別與所述電聲轉換裝置4〇〇及麥克風電連接, 從而使耳機40接收或發送無線音頻信號。 本技術方案實施例提供的耳機具有以下優點:其一, 由於所述耳機中的電聲轉換裝置可僅包括奈米碳管結構, 無需磁鐵等其它複雜結構,故該耳機的結構較爲簡單,有 利於降低該耳機的成本。其二,該耳機利用外部輸入的音 頻電信號造成該電聲轉換裝置溫度變化,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 19 201018256 電聲轉換裝置組成的耳機可在無磁的條件下工作。其三, 由於奈米碳管結構具有較小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成的電聲轉換裝置可均勻地加熱周圍 的氣體介質、迅速升降溫、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服 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(1Hz〜100kHz)、發聲强度可達1〇〇犯聲壓級, 發聲效果較好。其四,由於奈米碳管具有較好的機械强度 和勃f生,财用性較好,從而有利於製備由奈米碳管結構組 成的各種形狀、尺寸的耳機,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’可直接粘附在耳機的殼體上,從而 使該耳機具有更簡單的結構。 綜上所述,本發明確已符合發明專利之要件,遂依法 ❹提出專利申請。惟,以上所述者僅為本發明之較佳實施例, 自不能以此限制本案之巾請專利範圍。舉凡f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。 【圖式簡單說明】 圖1係先前技術中耳機的結構示意圖。 圖2係本技術方案第一實施例耳機中奈米碳管結構的 結構示意圖。 201018256 圖3係本技術方牵笛 圖4係沿圖3令施例耳機的結構示意圖。 m 5 ^ ^ ^ He 線的半剖面示意圖。 圖5係本技術方案第— 掃描電鏡照片。 f轭例耳機中奈米碳管結構的 圖6係本技術方案第—實施The electrodes 204 may be spaced apart and fixed at the thin ends or surfaces of the electroacoustic transducing device for inputting an external audio electrical signal to the electroacoustic transducing device via the audio data line 23, thereby causing the electroacoustic transducing device Fine sounds. When the carbon nanotubes in the carbon nanotube structure 202 are sequentially arranged in a certain direction, preferably, the arrangement direction of the carbon nanotubes extends in the direction from one electrode to the other electrode 204, and the two electrodes There should be a substantially equal spacing between the 204s such that the carbon nanotubes between the two electrodes 2〇4 can have a substantially equal resistance value. Preferably, the length of the electrode 2〇4 is greater than the width of the carbon nanotube structure 202 so that the entire carbon nanotube structure 202 can be utilized. The electrode 2〇4 uniformly introduces an audio electric signal into the carbon nanotube structure 202, and the carbon nanotube in the carbon nanotube structure 2〇2 converts electrical energy into heat energy, heats the surrounding medium, and changes the density of the surrounding medium. Make noise. The medium can include a gaseous medium or a liquid medium. X The electrode 204 is formed of a conductive material, and its specific shape and structure are not limited. Specifically, the electrode 204 may be selected in the form of a layer, a rod, a block, or other shapes. The material of the electrode 204 may be selected from a metal, a conductive polymer, a conductive paste, a metallic carbon nanotube, an indium tin oxide (IT〇), or the like. In the embodiment of the technical solution, the electroacoustic conversion device 2 includes two electrodes 204, and the electrode 204 is a conductive silver paste layer which is applied to the surface of the carbon nanotube structure 2〇2. Specifically, referring to FIG. 8 , the two electrodes 204 are intermittently coated on the surface of the carbon nanotube structure 202. When the carbon nanotube structures 2〇2 are arranged in an order, the electrodes 204 are spaced apart. The arrangement of the carbon nanotubes in the carbon nanotube structure 2〇2 is directed along one electrode 204 to the other electrode 2〇4. 13 201018256 In addition, referring to FIG. 7, when the carbon nanotube structure 202 is circular, one of the electrodes 204 may be coated on the periphery of the carbon nanotube structure 202, and the other electrode 204 may be attached to the The center of the carbon nanotube structure 202 is described. In the carbon nanotube structure 202, the carbon nanotubes are radially arranged in the direction from one electrode 204 to the other electrode 204. Specifically, the carbon nanotube structure 202 may be formed by radially arranging a plurality of nanocarbon line-like structures or narrow-width carbon nanotube films. Since the electrodes 204 are spaced apart, the electroacoustic conversion device 200 can be applied to the earphone 20 to access a certain resistance value to avoid a short circuit phenomenon. Since the carbon nanotube has a 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 204 and the carbon nanotube structure 202 The electrodes can be directly adhered and fixed, and a good electrical contact is formed. Alternatively, the electrode 204 can be adhered and fixed to the surface of the carbon nanotube structure 202 by using a conductive bonding layer. It will be appreciated that the electrode 204 is of an alternative construction. The external audio electrical signal source can be electrically coupled to the carbon nanotube structure 202 directly through an audio data line or electrode lead or the like. In addition, any manner of achieving electrical connection between the external audio electrical signal source and the carbon nanotube structure 202 is within the scope of the present technical solution. The electroacoustic conversion device 200 can be fixedly disposed inside the casing 210 by means of an adhesive, a card slot, a pinning structure or the like. In particular, the earphone 20 can further include a support structure 220. The support structure 220 is fixed to the inside of the housing 210 or formed integrally with the housing 210. The electroacoustic conversion device 200 is supported by the support structure 220 and spaced apart from the housing 210 201018256. The support structure 220 mainly serves as a support, and its shape is not limited. Specifically, the support structure 220 can also be a frame structure, a rod structure or an irregular shape structure. At this time, the electroacoustic conversion device 200 is partially in contact with the support structure 220, and the remaining portion is suspended. This arrangement allows the electroacoustic transducer 200 to be thermally exchanged with air or surrounding media. The electroacoustic transducing device 200 has a larger contact area with air or surrounding medium, and has a faster heat exchange rate, thereby having better sound emission efficiency. In the embodiment of the present technology, the support structure 220 is an annular convex structure formed inside the casing 210. Alternatively, the support structure 220 can be a planar or curved structure and have a surface. At this time, the electroacoustic conversion device 200 is directly disposed and attached to the surface of the support structure 220. Since the electroacoustic conversion device 200 is entirely supported by the support structure 220, the electroacoustic conversion device 200 can withstand a relatively high intensity audio signal input, thereby having a high vocal intensity. The material of the support structure 220 is an insulating material or a material having poor conductivity, and specifically may be a hard material such as diamond, glass, ceramic or quartz. In addition, the support structure 220 may also be a flexible material having a certain strength, such as a plastic, a resin or a paper material. Preferably, the material of the support structure 220 should have better thermal insulation properties, thereby preventing the heat generated by the carbon nanotube structure 220 from being excessively absorbed by the support structure 220, and failing to heat the surrounding medium to sound. In addition, the support structure 220 should have a relatively rough surface, so that the carbon nanotube structure 202 disposed on the surface of the support structure 220 can have a larger connection with air or other external medium. Increasing the vocalization result of the earphone 20. When the earphone 200 is straightforward, the support structure 220 is an optional structure. When the circuit structure 220 is not included, the electroacoustic conversion device is disposed on the housing 210. On the inner wall. In addition, since the carbon nanotubes in the carbon nanotube structure 2G2 have a very large specific surface area, the carbon nanotube structure 2〇2 itself has a good dryness under the action of the van der Waals force, and The carbon nanotube structure 2〇2 has good self-supporting property. Therefore, the electroacoustic converting device 2 (10) can be attached to the side wall of the © housing 210 straight (four). It can be understood that a plurality of electroacoustic transducing devices 200 can be disposed inside the one housing 21 to achieve a multi-channel sounding effect. The plurality of electroacoustic transducing devices 200 can be different types of speakers, such as electrodynamic speakers, piezoelectric speakers, and the like. The plurality of electroacoustic transducing devices 2 相互 cooperate with each other, as long as one of the electroacoustic transducing devices 200 includes a carbon nanotube structure 202. Further, the headset 20 may include two sponge covers 250' covering the housing 210 to cushion the pressure of the ears. In addition, the headset 20 can include a microphone (not shown) coupled to the connector 240. In addition, the headset 2 can include a wireless signal receiving unit (not shown) disposed inside the housing 210 and electrically connected to the electro-acoustic transducing device 200, thereby allowing the earphone 20 to receive a wireless audio signal. The above-described earphone 20 is in use because the carbon nanotube structure 202 has a small heat capacity per unit area and a large specific surface area. Specifically, the carbon nanotube structure 202 has a heat capacity per unit area of less than 2 x 10 4 joules per square centimeter. Preferably ' less than 1χ1〇-4 joules per square centimeter of Kelvin. In this embodiment, since the carbon nanotube structure 2〇2 is a nano carbon tube pulling structure directly obtained from the carbon nanotube array, having a smaller thickness, the unit of the carbon nanotube structure 202 The area heat capacity is 17χ1〇-6 joules per square centimeter of Kelvin. After inputting the signal, according to the change of signal intensity (such as current intensity), the electroacoustic transducer 2〇〇 composed of the carbon nanotube structure 2〇2 can uniformly heat the surrounding gas medium, rapidly rise and fall, and generate periodicity. The temperature changes and exchanges with the surrounding gas medium for rapid heat exchange, so that the surrounding gas body rapidly expands and contracts, emits a sound that can be perceived by the human ear, and the sound frequency of the emitted sound is wider and the sounding effect is better. As shown in Fig. 9 : The nano tube structure formed by the overlapping arrangement of four layers of carbon carbon films is used for the sound intensity of the earphone 20 up to 1 〇 5 dB sound pressure level, and the vocal frequency range is from 1 Hz to 100,000 Hz. (ie 1Ηζ~100kHz). Therefore, in the embodiment of the present invention, the sounding principle of the electroacoustic conversion device 200 is "electrical heat_sound" conversion, and has a wide range of applications. Referring to FIG. 10 and in conjunction with FIG. 11, a second embodiment of the present invention provides an earphone 30'. The earphone includes a casing 31 and an electroacoustic conversion device 300. The breaking body 310 is a hollow structure, and the electroacoustic converting device 3 is disposed inside the casing 310. Further, the earphone 3 can include at least one audio data line 330 electrically connected to the electro-acoustic transducing device 300 through the interior of the housing 310 and conduct audio electrical signals to the electro-acoustic transducing device 300. The housing 310 can further include at least one through hole 312 formed in the housing 31. The material of the casing 310 is a material that is light in weight and has a certain strength 17 201018256, such as plastic or resin. The electroacoustic conversion device 300 can cover the through hole 312. Preferably, the electroacoustic transducing device 300 is spaced apart from and opposite to the through hole 312, and sound emitted from the electroacoustic transducing device 300 can be transmitted out of the earphone 30 through the through hole 312. The electroacoustic conversion device 300 can be fixedly disposed inside the casing 310 by means of an adhesive, a card slot, a pinning structure or the like. Specifically, the earphone 30 can further include a support structure 320. The support structure 320 is fixed to the interior of the casing body 310 or formed integrally with the casing 310. The electroacoustic conversion device 300 is supported by the support structure 320 and spaced apart from the housing 310. The structure of the electroacoustic conversion device 300 of the in-ear earphone 30 is basically the same as that of the electroacoustic conversion device 200 of the headset 20 of the first embodiment. At least one electroacoustic transducing device 300 includes a carbon nanotube structure 302. The electroacoustic transducer device 300 can further include at least two electrodes 304 spaced apart from each other and electrically coupled to the carbon nanotube structure 302. It can be understood that a plurality of electroacoustic conversion devices 300 can be disposed inside the one housing 310 to achieve a multi-channel sounding effect. The plurality of electroacoustic transducing devices 300 can be different types of speakers, such as electric or piezoelectric. The plurality of electroacoustic transducing devices 300 cooperate with each other as long as one of the electroacoustic transducing devices 300 includes a carbon nanotube structure 302. Referring to FIG. 12, a third embodiment of the present invention provides an ear-hook earphone 40 including at least one housing 410, a hook 420, and at least one electroacoustic conversion device 400. The hook 420 is a curved structure that can be hung from the user's ear 18 201018256. When the hook 420 is hung on the user's ear, the housing 4i is attached to the ear side of the user. The internal structure of the housing 310 of the earphone 40 is substantially the same as that of the housing 210 of the earphone 20 of the first embodiment. The electroacoustic conversion device 400 is disposed inside the casing 41. Among them, at least one electroacoustic transducing device 400 includes a carbon nanotube structure 4〇2. The electroacoustic transducing device 400 can further include at least two electrodes 4〇4 spaced apart and electrically connected to the carbon nanotube structure 402. ❹ It can be understood that a plurality of electroacoustic conversion devices 400 can be disposed inside the one housing 410 to achieve a multi-channel sounding effect. The plurality of electroacoustic conversion devices 400 can be different types of speakers, such as electric or piezoelectric. The plurality of electroacoustic transducing devices 4 are coupled to each other as long as one of the electroacoustic transducing devices 400 includes a carbon nanotube structure 402. Further, the earphone 4 can include a microphone (not shown). In addition, the earphone 40 can include a wireless signal receiving unit (not shown) and a wireless signal sending unit (not shown) disposed inside the casing 41, respectively, and respectively associated with the electroacoustic converting device 4. The microphone is electrically connected so that the earphone 40 receives or transmits a wireless audio signal. The earphone provided by the embodiment of the present technical solution has the following advantages: First, since the electroacoustic conversion device in the earphone can only include a carbon nanotube structure, and no other complicated structure such as a magnet is needed, the structure of the earphone is relatively simple. It is beneficial to reduce the cost of the earphone. Secondly, the earphone utilizes an externally input audio electrical signal to cause a temperature change of the electroacoustic transducing device, thereby rapidly expanding and contracting the surrounding gaseous medium, thereby generating an acoustic wave without a diaphragm, so the 19 201018256 electroacoustic conversion device is composed of The headphones work in a non-magnetic condition. Third, due to the small heat capacity and large specific surface area of the carbon nanotube structure, after the input signal, according to the change of signal intensity (such as current intensity), the electroacoustic conversion composed of at least one layer of carbon nanotube structure The device can uniformly heat the surrounding gaseous medium, rapidly raise and lower temperature, generate periodic temperature changes, and rapidly exchange heat with the surrounding gaseous medium to rapidly expand and contract the surrounding gaseous medium, making the human ear perceivable. Sound, and the sound emitted by the sound has a wide frequency range (1 Hz to 100 kHz), the sound intensity can reach 1 〇〇 vocal pressure level, and the sounding effect is better. Fourth, because the carbon nanotube has better mechanical strength and It is beneficial to prepare earphones of various shapes and sizes composed of nano carbon tube structures, and is convenient to be applied to various fields. Fifth, since the carbon nanotubes have a large specific surface area, Therefore, the carbon nanotube structure has better adhesion, which can be directly adhered to the casing of the earphone, thereby making the earphone have a simpler structure. In summary, the present invention does In accordance with the requirements of the invention patent, the patent application is filed according to law. However, the above is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent for the case. The equivalent modifications or variations of the spirit of the present invention are intended to be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic structural view of a prior art earphone. Fig. 2 is a first embodiment of the present invention. Schematic diagram of the structure of the carbon nanotube structure of 2010. Fig. 3 is a schematic diagram of the structure of the earphone according to the embodiment of Fig. 3. The schematic diagram of the half section of the line of m 5 ^ ^ ^ He. Scheme - Scanning electron micrograph. Figure 6 of the carbon nanotube structure in the yoke case is the first implementation of the technical solution.

構的掃描電鏡照片。 機中不未破g線狀L 圖7係本技術方案第—眘 置的結構示意圖。 實施例耳機中一種電聲轉換裝 ❿置的AS係2術方案第一實施例耳機中-種電聲轉換裝 置的結構不意圖。 圖9係本技術方案第一實施例耳機的頻率響應特性曲 線。 圖H)係本技術方案第二實施例耳機的結構示意圖。 圖11係沿圖10中ΠΗΗ線的半剖面示意圖。 圖12係本技術方案第三實施例耳機的半剖面示意圖。 【主要元件符號說明】 耳機 電聲轉換裝置 音圈 磁鐵 振膜 殼體 奈米碳管片段 10, 20, 30, 40 100, 200, 300, 400 102 104 106 110, 210, 310, 410 143 21 201018256 奈米碳管 145 奈米碳管結構 202, 302, 402 電極 204, 304, 404 支撑結構 220, 330 音頻數據線 230, 330 連接體 240 罩體 250 通孔 312 ❹挂鈎 420 ❹ 22Scanning electron micrograph of the structure. The g-shaped L is not broken in the machine. Figure 7 is a schematic diagram of the structure of the present technical solution. The AS system of the electroacoustic transducer is an embodiment of the first embodiment. The structure of the electroacoustic transducer is not intended. Fig. 9 is a graph showing the frequency response characteristic of the earphone of the first embodiment of the present technical solution. Figure H) is a schematic structural view of a headset of a second embodiment of the present technical solution. Figure 11 is a half cross-sectional view taken along line 图 in Figure 10. Figure 12 is a half cross-sectional view showing the earphone of the third embodiment of the present technical solution. [Main component symbol description] Headphone electroacoustic conversion device voice coil magnet diaphragm housing carbon nanotube segment 10, 20, 30, 40 100, 200, 300, 400 102 104 106 110, 210, 310, 410 143 21 201018256 Nano carbon tube 145 carbon nanotube structure 202, 302, 402 electrode 204, 304, 404 support structure 220, 330 audio data line 230, 330 connector 240 cover 250 through hole 312 ❹ hook 420 ❹ 22

Claims (1)

201018256 十、申請專利範圍 1. 一種耳機,其包括: 至少一殼體;及 至少一電聲轉換裝置設置於殼體内部; 其改良在於:所述至少一電聲轉換裝置包括一奈米碳管 結構。 2·如申請專利範圍第1項所述的耳機,其中,所述奈米 碳管結構的單位面積熱容小於2xl0-4焦耳每平方厘米 Φ 克爾文。 3. 如申請專利範圍第i項所述的耳機,其中,所述奈米 碳管結構將音頻電信號轉換爲熱能,改變奈米碳管結 構周圍介質密度發出聲波。 4. 如申請專利範圍第i項所述的耳機,其中,所述奈米 碳管結構包括均勻分佈的奈米碳管。 5·如申請專利範圍第χ項所述的耳機,其中,所述奈米 碳管結構爲層狀結構或線狀結構。 ⑩6·如申請專利範圍第5項所述的耳機,其中,所述奈米 碳管結構包括奈米碳管膜、奈米碳管線狀結構或其組 合形成的複合結構。 7·如申請專利範圍第6項所述的耳機,其中,所述奈米 碳官膜包括多個奈米碳管沿同一方向首尾相連擇優取 向排列。 8.如申請專利範圍第7項所述的耳機,其中,所述奈米 碳管膜進一步包括通過凡德瓦爾力首尾相連的奈米碳 管片段’每個奈米碳管片段具有大致相等的長度,並 23 201018256 ^母個4碳管片段由多個相互平行的奈米碳管構 兩層奈米碳管膜之門緊=置的奈米碳官膜’相鄰 奈米碳管心每層㈣碳管膜中的 奈米碳管的二二二'相鄰兩層奈米碳管膜中的 j辨列方向相同,或具有一交叉角度。 ❹ ❿ 10二^範圍第6項所述的耳機,其:二述夺平 繞形成一面形結構,或者多個奈米碳管 線狀、、·口構編織構成或並排設置組成一面形結構。 利範圍第1項所述的耳機,其中,所述電聲 、置且^包括至少兩電極’該至少兩電極間隔 λ置且與所述奈米碳管結構電連接。 ^ 如申請專利範圍第η項所述的耳機,其中,所述奈米 碳管結構中奈米碳管從一個電極向另一個電極延伸。 13. 如申請專利範圍第α項所述的耳機,其中,所述殼體 包括至少一個通孔,所述電聲轉換裝置覆蓋該通孔、 與該通孔間隔設置或設置於殼體的内壁上。 14. 如申請專利範圍第χ項所述的耳機,其中,所述殼體 包括一支撑結構,所述電聲轉換裝置通過該支撑結構 支撐。 15·如申請專利範圍第1項所述的耳機,其中,所述耳機 進一步包括一分頻器及多個電聲轉換裝置,該分頻器 分別與所述多個電聲轉換裝置電連接。 16.如申請專利範圍第1項所述的耳機,其中,所述耳機 24 201018256 爲耳塞式、頭戴式或耳挂式結構。 利範圍第1項所述的耳機,其中,所述耳機 :括-無線信號接收單元與所述電聲轉換裝置電連 18. —種耳機,其包括·· 至少—耳機本體;以及 聲轉換裝置設置於耳機本體内部; 結構。 聲轉換裝置包括-奈米碳管 19.如申請專利範園帛18項所述 機進一步包括至少-音頻信 機’其t,所述耳 述電聲轉換裝置電連接。,、’,該音頻信號線與所 ❹ 25201018256 X. Patent application scope 1. An earphone comprising: at least one casing; and at least one electroacoustic conversion device disposed inside the casing; the improvement is that the at least one electroacoustic conversion device comprises a carbon nanotube structure. 2. The earphone of claim 1, wherein the carbon nanotube structure has a heat capacity per unit area of less than 2 x 10 4 joules per square centimeter Φ Kelvin. 3. The earphone of claim i, wherein the carbon nanotube structure converts the audio electrical signal into thermal energy, and changes the density of the medium surrounding the carbon nanotube structure to emit sound waves. 4. The earphone of claim i, wherein the carbon nanotube structure comprises a uniformly distributed carbon nanotube. The earphone according to the above aspect of the invention, wherein the carbon nanotube structure is a layered structure or a linear structure. The earphone according to claim 5, wherein the carbon nanotube structure comprises a carbon nanotube film, a nanocarbon line-like structure or a composite structure formed by the combination thereof. 7. The earphone of claim 6, wherein the carbon carbon film comprises a plurality of carbon nanotubes arranged in an end-to-end orientation in the same direction. 8. The earphone of claim 7, wherein the carbon nanotube film further comprises a carbon nanotube segment that is connected end to end by a van der Waals force, and each of the carbon nanotube segments has substantially equal Length, and 23 201018256 ^ mother 4 carbon tube fragment consists of multiple parallel carbon nanotubes with two layers of carbon nanotube membranes tightly = set of nano carbon official membrane 'adjacent nano carbon tube heart per In the layer (4) carbon nanotube film, the second two-two carbon nanotubes in the adjacent two-layer carbon nanotube film have the same direction of discrimination or have an intersection angle. The earphone according to Item 6 of the above paragraph, wherein: the two-way flattening forms a one-sided structure, or a plurality of carbon nanotubes are linear, and the mouth is knitted or formed side by side to form a one-sided structure. The earphone of claim 1, wherein the electroacoustic device comprises at least two electrodes, the at least two electrodes being spaced apart from each other and electrically connected to the carbon nanotube structure. The earphone of claim n, wherein the carbon nanotube structure extends from one electrode to the other. 13. The earphone of claim 5, wherein the housing comprises at least one through hole, the electroacoustic conversion device covers the through hole, is spaced apart from the through hole or is disposed on an inner wall of the housing on. 14. The earphone of claim 2, wherein the housing comprises a support structure through which the electroacoustic conversion device is supported. The earphone of claim 1, wherein the earphone further comprises a frequency divider and a plurality of electroacoustic conversion devices, the frequency dividers being electrically connected to the plurality of electroacoustic conversion devices, respectively. 16. The earphone of claim 1, wherein the earphone 24 201018256 is an earbud, head mounted or earhook structure. The earphone of the first aspect, wherein the earphone comprises: a wireless signal receiving unit electrically connected to the electroacoustic conversion device, a type of earphone, comprising: at least - a headphone body; and an acoustic conversion device Set inside the headphone body; structure. The acoustic conversion device comprises a carbon nanotube. 19. The machine further comprises at least an audio signal 't' as described in the application for a patent, wherein the electroacoustic transducer is electrically connected. ,, ', the audio signal line and the ❹ 25
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US8913765B2 (en) 2012-11-20 2014-12-16 Tsinghua University Earphone
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US9088851B2 (en) 2012-11-20 2015-07-21 Tsinghua University Thermoacoustic device array
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CN113055775B (en) * 2021-03-10 2022-06-07 内蒙古民族大学 Listening training device is used in english teaching

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