TWI462600B - Ear phone - Google Patents
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- TWI462600B TWI462600B TW097140873A TW97140873A TWI462600B TW I462600 B TWI462600 B TW I462600B TW 097140873 A TW097140873 A TW 097140873A TW 97140873 A TW97140873 A TW 97140873A TW I462600 B TWI462600 B TW I462600B
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Description
本發明涉及一種耳機，尤其涉及一種基於奈米碳管的耳機。 The invention relates to an earphone, in particular to a carbon nanotube-based earphone.
先前技術中的耳機一般包括殼體及設置於殼體內部的揚聲器。按揚聲器的工作原理可將耳機分為電動式、電容式、靜電式、氣動式及壓電式等類型。按耳機的佩戴方式可將耳機分為頭戴式、耳掛式及耳塞式等類型。按音頻信號的傳輸方式可將耳機分為有線耳機及無線耳機等類型。 Earphones of the prior art generally include a housing and a speaker disposed inside the housing. According to the working principle of the speaker, the earphone can be divided into electric type, capacitive type, electrostatic type, pneumatic type and piezoelectric type. The earphone can be divided into a head-mounted type, an ear-hook type, and an earphone type according to the manner in which the earphone is worn. According to the transmission mode of the audio signal, the earphone can be divided into a wired earphone and a wireless earphone.
耳機的殼體一般為形狀與人耳大小相當的中空結構，其材料為塑料或樹脂等。耳塞的殼體可設置於人耳的外耳內，頭戴式及耳掛式耳機的殼體覆蓋於耳上。 The housing of the earphone is generally a hollow structure having a shape equivalent to that of a human ear, and the material thereof is plastic or resin. The housing of the earplug can be disposed in the outer ear of the human ear, and the housing of the headphone and the earphone can be placed on the ear.
耳機殼體內部的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內的音頻電功率信號通過換能方式轉變為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，分為：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。其均為通過產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。其中，電動式揚聲器的應用最為廣泛。 A speaker inside the earphone housing 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 sufficient sound pressure level by a transducing mode. There are many types of speakers in the past, and according to their working principle, they are divided into: electric speakers, electromagnetic speakers, electrostatic speakers and piezoelectric speakers. All of them convert the air medium by generating mechanical vibration to cause the air medium to fluctuate, thereby realizing the conversion of "electric-force-sound". Among them, electric speakers are the most widely used.
請參閱圖1，先前的採用電動式揚聲器的耳機10一般包括一殼體 110、設置於殼體110內部的揚聲器100。該揚聲器100通常由三部分組成：音圈102、磁鐵104及振膜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產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產生的磁場作用下產生振動，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的耳機10的結構較為複雜，且其必須在有磁的條件下工作。 Referring to FIG. 1, the prior earphone 10 using an electric speaker generally includes a housing. 110. A speaker 100 disposed inside the housing 110. The speaker 100 is generally composed of three parts: a voice coil 102, a magnet 104, and a diaphragm 106. The voice coil 102 generally employs an energized conductor. When an audio current signal is input to the voice coil 102, the voice coil 102 corresponds to a current carrying conductor. Since the current carrying conductor is subjected to Lorentz forces in the magnetic field, the voice coil 102 is placed in a magnetic field generated by the magnet 104 to be subjected to a force that is proportional to the audio current and whose direction changes with the direction of the audio current. Therefore, the voice coil 102 generates vibration under the action of the magnetic field generated by the magnet 104, and drives the diaphragm 106 to vibrate. The air before and after the diaphragm 106 also vibrates, and the electrical signal is converted into sound waves to radiate around. However, the structure of the earphone 10 using the electric speaker 100 is complicated, and it must operate under magnetic conditions.
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))為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日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。 Since the early 1990s, nanomaterials represented by carbon nanotubes (see Helical microtubules of graphitic carbon, Nature, Sumio Iijima, vol 354, p56 (1991)) have caused people with their unique structure and properties. Great attention. However, the single carbon nanotubes are nano-scale, a large number of carbon nanotubes are easy to agglomerate, and it is difficult to disperse to form a uniform carbon nanotube film, thereby limiting the application of the carbon nanotubes in macroscopic fields. The application number number 091132618 filed by Jiang Kaili et al. in the Republic of China on September 24, 1997 discloses a nano carbon tube rope comprising a segment of a carbon nanotube bundle connected end to end, and the nanometer The carbon nanotubes in the carbon tube rope are arranged substantially in the same direction. Referring to FIG. 2, in an ideal state, each of the carbon nanotube bundle segments 143 includes 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 a non-end-to-end carbon nanotube bundle segment or a single root in the carbon nanotube rope. Carbon tube. This nano carbon tube rope can conveniently use nano carbon tubes for macroscopic fields.
近幾年來，隨著奈米碳管及奈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。然而，先前技術中却尚未發現奈米碳管用於聲學領域。 In recent years, with the deepening of research on carbon nanotubes and nanomaterials, its 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 related to field emission electron sources, sensors, new optical materials, and soft ferromagnetic materials have been reported. . However, carbon nanotubes have not been found in the prior art for use in the field of acoustics.
有鑒於此，提供一種結構簡單，可在無磁的條件下工作的耳機實為必要。 In view of this, it is necessary to provide a headphone that is simple in structure and can operate under non-magnetic conditions.
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內部；其中：所述至少一電聲轉換裝置包括一奈米碳管結構。 An earphone comprising: at least one housing; and at least one electroacoustic conversion device disposed inside the housing; wherein: the at least one electroacoustic conversion device comprises a carbon nanotube structure.
相較於先前技術，所述耳機具有以下優點：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，故該耳機的結構較為簡單，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、產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。 Compared with the prior art, the earphone 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 carbon nanotube structure, thereby rapidly expanding and contracting the surrounding medium, thereby generating sound waves without a diaphragm, so the earphone of the electroacoustic conversion device can be Work under non-magnetic conditions. Third, due to the small heat capacity and large specific surface area of the carbon nanotube structure, after the input signal, the electroacoustic sound composed of a layer of carbon nanotube structure according to the change of 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, emits a sound that can be perceived by the human ear, and is emitted. The sound has a wide frequency range (1 Hz to 100 kHz) and sounds better. Fourth, because the carbon nanotubes have good mechanical strength and toughness, the durability is good, so that It is convenient to prepare earphones of various shapes and sizes composed of a carbon nanotube structure, and is conveniently applied to various fields.
10,20,30,40‧‧‧耳機 10,20,30,40‧‧‧ headphone
100,200,300,400‧‧‧電聲轉換裝置 100,200,300,400‧‧‧ electroacoustic conversion device
102‧‧‧音圈 102‧‧‧ voice coil
104‧‧‧磁鐵 104‧‧‧ Magnet
106‧‧‧振膜 106‧‧‧Densor
110,210,310,410‧‧‧殼體 110,210,310,410‧‧‧shell
143‧‧‧奈米碳管片段 143‧‧‧Nano carbon nanotube fragments
145‧‧‧奈米碳管 145‧‧・Nano carbon tube
202,302,402‧‧‧奈米碳管結構 202,302,402‧‧‧Nano carbon nanotube structure
204,304,404‧‧‧電極 204,304,404‧‧‧electrodes
220,330‧‧‧支撑結構 220,330‧‧‧Support structure
230,330‧‧‧音頻數據線 230,330‧‧‧Audio data cable
240‧‧‧連接體 240‧‧‧Connector
250‧‧‧罩體 250‧‧‧ Cover
312‧‧‧通孔 312‧‧‧through hole
420‧‧‧掛鈎 420‧‧‧ hook
圖1係先前技術中耳機的結構示意圖。 1 is a schematic structural view of a headphone in the prior art.
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。 2 is a schematic structural view of a carbon nanotube structure in a headphone according to a first embodiment of the present technical solution.
圖3係本技術方案第一實施例耳機的結構示意圖。 FIG. 3 is a schematic structural view of a headphone according to a first embodiment of the present technical solution.
圖4係沿圖3中II-II線的半剖面示意圖。 Figure 4 is a half cross-sectional view taken along line II-II of Figure 3.
圖5係本技術方案第一實施例耳機中奈米碳管結構的掃描電鏡照片。 Fig. 5 is a scanning electron micrograph of a carbon nanotube structure in a headphone according to a first embodiment of the present technical solution.
圖6係本技術方案第一實施例耳機中奈米碳管線狀結構的掃描電鏡照片。 Fig. 6 is a scanning electron micrograph of a nanocarbon line-like structure in a headphone according to a first embodiment of the present technical solution.
圖7係本技術方案第一實施例耳機中一種電聲轉換裝置的結構示意圖。 FIG. 7 is a schematic structural diagram of an electroacoustic conversion device in a headset according to a first embodiment of the present technical solution.
圖8係本技術方案第一實施例耳機中一種電聲轉換裝置的結構示意圖。 FIG. 8 is a schematic structural diagram of an electroacoustic conversion device in a headset according to a first embodiment of the present technical solution.
圖9係本技術方案第一實施例耳機的頻率響應特性曲線。 FIG. 9 is a frequency response characteristic curve of the earphone of the first embodiment of the present technical solution.
圖10係本技術方案第二實施例耳機的結構示意圖。 FIG. 10 is a schematic structural diagram of a headset according to a second embodiment of the present technical solution.
圖11係沿圖10中III-III線的半剖面示意圖。 Figure 11 is a half cross-sectional view taken along line III-III of Figure 10.
圖12係本技術方案第三實施例耳機的半剖面示意圖。 Figure 12 is a half cross-sectional view showing the earphone of the third embodiment of the present technical solution.
以下將結合附圖詳細說明本技術方案實施例的耳機。 Hereinafter, an earphone of an embodiment of the present technical solution will be described in detail with reference to the accompanying drawings.
本技術方案提供一種耳機，該耳機包括至少一殼體及至少一電聲轉換裝置，該電聲轉換裝置設置於殼體內部。 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.
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為彎曲結構，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。 Referring to FIG. 3 and FIG. 4 , the first embodiment of the present invention provides a headset 20 including two housings 210 , a connecting body 240 and at least two electroacoustic conversion 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 connecting body 240 is worn on the user's head, the two housings 210 respectively cover the user's ear.
該殼體210為一中空結構。該至少兩個電聲轉換裝置200分別設置於兩個殼體210內部。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內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。 The housing 210 is a hollow structure. The at least two electroacoustic conversion devices 200 are respectively disposed inside the two housings 210. Further, the earphone 20 may include at least one audio data line 230 electrically connected to the electroacoustic conversion device 200 through the inside of the housing 210, and conduct audio electrical signals to the electro-acoustic conversion device 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的材料為質量較輕並具有一定强度的材料，如：塑料或樹脂等。 The housing 210 may further include at least one through hole formed in the housing 210. The material of the housing 210 is a lighter weight material having a certain strength, such as plastic or resin.
該電聲轉換裝置200可覆蓋所述通孔。優選地，該電聲轉換裝置200與所述通孔間隔並相對設置，從該電聲轉換裝置200發出的聲音可通過通孔傳出耳機20外部。 The electroacoustic conversion device 200 can cover the through hole. Preferably, the electroacoustic transducing device 200 is spaced apart from and opposite to the through hole, and sound emitted from the electroacoustic transducing device 200 can be transmitted out of the earphone 20 through the through hole.
所述至少一個電聲轉換裝置200包括一奈米碳管結構202。該奈米碳管結構202的形狀不限，優選為層狀結構，並具有較大比表面積。具體地，該奈米碳管結構202可為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 ，奈米碳管之間通過凡德瓦爾力緊密結合。該奈米碳管結構202中的奈米碳管為無序或有序排列。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；有序指至少多數奈米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固定方向擇優取向。具體地，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，奈米碳管沿一個方向或者多個方向擇優取向排列。該奈米碳管結構202的厚度優選為0.5奈米~1毫米。所述奈米碳管結構202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202的厚度為50奈米。當該奈米碳管結構202厚度比較小時，例如小於10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20。該奈米碳管結構202中的奈米碳管包括單壁奈米碳管、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為0.5奈米~50奈米，所述雙壁奈米碳管的直徑為1.0奈米~50奈米，所述多壁奈米碳管的直徑為1.5奈米~50奈米。可以理解，所述奈米碳管結構202的具體結構不限，優選地，該奈米碳管結構202滿足下述三個條件，即：為層狀、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；及厚度為0.5奈米~1毫米。更優選地，所述奈米碳管結構202包括有序排列的奈米碳管，奈米碳管沿一固定方向擇優取向排列。 The at least one electroacoustic transducing device 200 includes a carbon nanotube structure 202. 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 202 can be at least one layer of carbon nanotube film, at least one nano carbon line structure or a composite structure composed of the carbon nanotube film and the nano carbon line structure. The carbon nanotube structure 202 includes uniformly distributed carbon nanotubes The carbon nanotubes are closely combined by Van der Waals force. The carbon nanotubes in the carbon nanotube structure 202 are disordered or ordered. Among them, 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; orderly means that at least most of the arrangement of the carbon nanotubes has a certain regularity, such as substantially along a fixed Directionally preferred orientation or preferred orientation along several fixed directions. Specifically, 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 includes an ordered array of carbon nanotubes The carbon nanotubes are arranged in a preferred orientation in one direction or in multiple directions. The thickness of the carbon nanotube structure 202 is preferably from 0.5 nm to 1 mm. When the thickness of the carbon nanotube structure 202 is increased, the specific surface area is decreased and the heat capacity is increased; when the thickness of the carbon nanotube structure 202 is decreased, the mechanical strength is poor and the durability is not good enough. In the embodiment of the technical solution, the carbon nanotube structure 202 has a thickness of 50 nm. When the carbon nanotube structure 202 is relatively small in thickness, such as less than 10 microns, the carbon nanotube structure 202 has good transparency and can be used to fabricate a transparent earphone 20 having a transparent housing 210. The carbon nanotubes in the carbon nanotube structure 202 include one or more of a single-walled carbon nanotube, a double-walled carbon nanotube, and a multi-walled carbon nanotube. The single-walled carbon nanotube has a diameter of 0.5 nm to 50 nm, the double-walled carbon nanotube has a diameter of 1.0 nm to 50 nm, and the multi-walled carbon nanotube has a diameter of 1.5. Nano ~ 50 nm. It can be understood that the specific structure of the carbon nanotube structure 202 is not limited. Preferably, the carbon nanotube structure 202 satisfies the following three conditions, namely, layered, linear or other shapes, and has a larger Specific surface area and small unit area heat capacity; including uniformly distributed carbon nanotubes; and thickness of 0.5 nm to 1 mm. More preferably, the carbon nanotube structure 202 comprises an ordered array of carbon nanotubes arranged in a preferred orientation in a fixed orientation.
本技術方案實施例中，所述奈米碳管結構202為一奈米碳管拉膜結構，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。該奈米碳管拉膜結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奈米~10釐米。請參閱圖5，進一步地，所述奈米碳管結構202中奈米碳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管片段，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。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202的厚度越大，低頻效果越好，强度越大；奈米碳管結構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200具有不同的頻響範圍，具體可為高頻電聲轉換裝置200、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210內部，達到多聲道發聲效果。 In the embodiment of the technical solution, the carbon nanotube structure 202 is a carbon nanotube film structure, which comprises a layer or a plurality of layers arranged in an overlapping manner and directly pulled from the carbon nanotube array. The obtained carbon nanotube film. The structure of the carbon nanotube film is similar to that of the nano carbon tube rope. The difference is that the carbon nanotube film structure can have a large width, such as 0.5 nm to 10 cm. Referring to FIG. 5, further, the carbon nanotube film in the carbon nanotube structure 202 includes a plurality of carbon nanotube tubes connected end to end in a pulling direction and arranged in a preferred orientation and uniformly distributed. Specifically, the carbon nanotube film comprises a plurality of end-to-end and aligned carbon nanotube 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 carbon nanotube segment comprises a plurality of carbon nanotubes of substantially equal length and arranged substantially parallel to one another. When the carbon nanotube film structure comprises a plurality of layers of carbon nanotube films 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 greater the thickness of the carbon nanotube structure 202, the better the low frequency effect and the greater the strength; the smaller the thickness of the carbon nanotube structure 202, the better the high frequency effect and the higher the sounding efficiency. The electroacoustic conversion device 200 has different frequency response ranges, and may be a high frequency electroacoustic conversion device 200, an intermediate frequency electroacoustic conversion device 200, or a low frequency electroacoustic conversion device 200, depending on the thickness of the carbon nanotube structure 202. . The plurality of electroacoustic transducing devices 200 are disposed inside the casing 210 at intervals from each other to achieve a multi-channel sounding effect.
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為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，該奈米碳管線狀結構可經過扭轉形成一奈米碳管絞線結構。在上述絞線結構中，奈米碳管繞絞線結構的軸向螺 旋狀旋轉排列。可以理解，該奈米碳管結構202可為一個奈米碳管線狀結構盤繞形成一面形結構，或者為多個奈米碳管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，直徑為0.5奈米~1毫米。 The carbon nanotube structure 202 can further comprise a plurality of nanocarbon line-like structures. The nanocarbon line-like structure comprises a plurality of carbon nanotube segments connected end to end by a van der Waals force, and each of the carbon nanotube segments comprises a plurality of carbon nanotubes of substantially equal length and arranged substantially parallel to each other. Similar to the structure of the carbon nanotube film, the nanocarbon line-like structure is also obtained by directly pulling from the carbon nanotube array. The difference from the structure of the carbon nanotube film is that the nano carbon line-like structure has a narrow width and a macroscopic shape. As shown in FIG. 6, the nanocarbon line-like structure can be twisted to form a carbon nanotube strand structure. In the above twisted wire structure, the axial snail of the carbon nanotube winding structure Rotate in rotation. It can be understood that the carbon nanotube structure 202 can be coiled into a one-sided structure for a nano carbon line structure, or composed of a plurality of nano carbon line-like structures or arranged side by side. In addition, the carbon nanotube structure 202 may be formed by a composite superposition of a carbon nanotube film and a nanocarbon line structure. The length of the nanocarbon line-like structure is not limited, and the diameter is from 0.5 nm to 1 mm.
進一步地，所述電聲轉換裝置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202電連接。所述電極204可間隔設置並固定在所述電聲轉換裝置200兩端或表面，用於將外部音頻電信號通過音頻數據線230輸入至電聲轉換裝置200，從而使所述電聲轉換裝置200發聲。當奈米碳管結構202中的奈米碳管為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204至另一個電極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204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204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204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202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。 Further, the electroacoustic conversion device 200 may further include at least two electrodes 204 spaced apart and electrically connected to the carbon nanotube structure 202. The electrodes 204 may be spaced apart and fixed at both ends or surfaces of the electroacoustic conversion device 200 for inputting an external audio electrical signal to the electroacoustic conversion device 200 through the audio data line 230, thereby causing the electro-acoustic conversion device 200 voices. 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 of one electrode 204 to the other electrode 204, and the two electrodes 204 There should be a substantially equal spacing therebetween so that the carbon nanotubes between the two electrodes 204 can have a substantially equal resistance value. Preferably, the length of the electrode 204 is greater than the width of the carbon nanotube structure 202 such that the entire carbon nanotube structure 202 can be utilized. The electrode 204 uniformly introduces an audio electrical signal into the carbon nanotube structure 202. The carbon nanotubes in the carbon nanotube structure 202 convert electrical energy into thermal energy, heat the surrounding medium, and change the density of the surrounding medium to emit sound. The medium can include a gaseous medium or a liquid medium.
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可選擇為層狀、棒狀、塊狀或其它形狀。所述電極204的材料可選擇為金屬、導電聚合物、導電膠、金屬性奈米碳管、銦錫氧化物(ITO)等。本技術方案實施例中，所述電聲轉換裝置200包括兩個電極204，所述電極204為間隔塗附於所述奈米碳管結構202表面的導電銀膠層。 The electrode 204 is formed of a conductive material, and its specific shape and structure are not limited. Specifically, the electrode 204 can be selected as 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 (ITO), or the like. In the embodiment of the technical solution, the electroacoustic conversion device 200 includes two electrodes 204, and the electrodes 204 are conductive silver paste layers that are applied to the surface of the carbon nanotube structure 202.
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202為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202中的奈米碳管的排列方向沿一電極204指向另一電極204。 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 202 are sequentially arranged in a certain direction, the electrodes 204 are spaced apart, and the nanometers are arranged. The arrangement of the carbon nanotubes in the carbon tube structure 202 is directed along one electrode 204 to the other electrode 204.
另，請參閱圖7，所述奈米碳管結構202為圓形時，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，奈米碳管為沿一電極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可為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。 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 coated on the nanotube. The center of the carbon nanotube structure 202. 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.
由於所述電極204間隔設置，所述電聲轉換裝置200應用於耳機20時能接入一定的阻值避免短路現象產生。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。 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.
可以理解，所述電極204為可選擇的結構。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內。 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 an audio data line or an 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.
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內部。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內部，或與該殼體210一 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間隔設置。 The electroacoustic conversion device 200 can be fixedly disposed inside the housing 210 by means of an adhesive, a card slot, a pinning structure or the like. Specifically, the earphone 20 can further include a support structure 220. The support structure 220 is fixed inside the housing 210 or is associated with the housing 210 Body shaping is formed. The electroacoustic conversion device 200 is supported by the support structure 220 and spaced apart from the housing 210.
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也可為一框架結構、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。本技術方案實施例中，該支撑結構220為形成於所述殼體210內部的環狀凸起結構。 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 exchange heat with the air or surrounding medium. 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 technical solution, the support structure 220 is an annular convex structure formed inside the casing 210.
另，該支撑結構220可為一平面或曲面結構，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。 In addition, the support structure 220 can be a planar or curved structure and has 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 high-intensity audio signal input, thereby having a high vocal intensity.
該支撑結構220的材料為絕緣材料或導電性較差的材料，具體可為一硬性材料，如金剛石、玻璃、陶瓷或石英。另，所述支撑結構220還可為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產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應具有一較為粗糙的表面，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觸面積，有利於提高所述耳機20的發聲效果。 The material of the support structure 220 is an insulating material or a material with 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, so that the heat generated by the carbon nanotube structure 220 is prevented from being excessively absorbed by the support structure 220, and the purpose of heating the surrounding medium and sounding is not achieved. In addition, the supporting structure 220 should have a relatively rough surface, so that the carbon nanotube structure 202 disposed on the surface of the supporting structure 220 can have a larger contact area with air or other external medium, which is advantageous for improving the earphone. 20 sound effects.
可以理解，該支撑結構220為可選擇結構，當該耳機20不包括該支撑結構220時，所述電聲轉換裝置200可直接設置於殼體210的內壁上。 It can be understood that the support structure 220 is an optional structure. When the earphone 20 does not include the support structure 220, the electroacoustic conversion device 200 can be directly disposed on the inner wall of the housing 210.
另，由於奈米碳管結構202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202本身有很好的粘附性，並且，該奈米碳管結構202具有很好的自支撑性，故該電聲轉換裝置200可直接粘附在所述殼體210的側壁上。 In addition, since the carbon nanotubes in the carbon nanotube structure 202 have a large specific surface area, the carbon nanotube structure 202 itself has good adhesion under the action of the van der Waals force, and the nai The carbon nanotube structure 202 has good self-supporting properties, so the electroacoustic transducing device 200 can be directly adhered to the side wall of the housing 210.
可以理解，所述一個殼體210內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可為不同類型的揚聲器，如電動式揚聲器、壓電式揚聲器等。該多個電聲轉換裝置200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。 It can be understood that a plurality of electroacoustic conversion devices 200 can be disposed inside the one housing 210 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 200 cooperate with each other as long as one of the electroacoustic transducing devices 200 includes a carbon nanotube structure 202.
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20可包括一無線信號接收單元(圖未示)設置於殼體210內部，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。 Further, the headset 20 can 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 20 can include a wireless signal receiving unit (not shown) disposed inside the housing 210 and electrically connected to the electro-acoustic conversion device 200 such that the earphone 20 receives the wireless audio signal.
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2×10-4焦耳每平方厘米克爾文。優選地，小於1×10-4焦耳每平方厘米克爾文。本實施例中，由於該奈米碳管結構202為一直接從奈米碳管陣列中拉取得到的奈米碳管拉膜結構，具有更小的厚度，該奈米碳管結構202的單位面積熱容為1.7×10-6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202組成的電聲轉換裝置200可均勻地加熱周圍的氣體介質、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，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，採用四層奈米碳管薄膜重叠設置形成的奈米碳管結構202用於耳機20的發聲强度可達105分貝聲壓級，發聲頻率範圍為1赫茲至10萬赫茲(即1Hz~100kHz)。故本技術方案實施例中，所述電聲轉換裝置200的發聲原理為“電-熱-聲”的轉換，具有廣泛的應用範圍。 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 of Kelvin. Preferably, it is less than 1 x 10 -4 joules per square centimeter of Kelvin. In this embodiment, since the carbon nanotube structure 202 is a nano carbon tube film structure obtained directly from the carbon nanotube array, having a smaller thickness, the unit of the carbon nanotube structure 202 The area heat capacity is 1.7 x 10 -6 joules per square centimeter of Kelvin. After inputting the signal, the electroacoustic conversion device 200 composed of the carbon nanotube structure 202 uniformly heats the surrounding gaseous medium, rapidly raises and lowers temperature, and generates periodic temperature changes according to changes in signal intensity (such as current intensity). The rapid exchange of heat with the surrounding gaseous medium causes the surrounding gaseous medium to rapidly expand and contract, giving a sound that is perceptible to the human ear, and the sound emitted has a wide frequency range and good sounding effect. As shown in FIG. 9, the carbon nanotube structure 202 formed by overlapping the four-layer carbon nanotube film is used for the sound intensity of the earphone 20 up to 105 decibels, and the sound frequency ranges from 1 Hz to 100,000 Hz ( That is, 1Hz~100kHz). Therefore, in the embodiment of the technical solution, the sounding principle of the electroacoustic conversion device 200 is “electric-thermal-acoustic” conversion, and has a wide range of applications.
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310及一電聲轉換裝置300。該殼體310為一中空結構，該電聲轉換裝置300設置於殼體310內部。進一步地，該耳機30可包括至少一音頻數據線330通過所述殼體310內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。 Referring to FIG. 10 and FIG. 11 , a second embodiment of the present invention provides an earphone 30 that includes a housing 310 and an electroacoustic conversion device 300 . The housing 310 is a hollow structure, and the electroacoustic conversion device 300 is disposed inside the housing 310. Further, the earphone 30 can include at least one audio data line 330 electrically connected to the electroacoustic conversion device 300 through the interior of the housing 310 and conduct audio electrical signals to the electro-acoustic conversion device 300.
該殼體310可進一步包括形成於殼體310上的至少一通孔312。該殼體310的材料為質量較輕並具有一定强度的材料，如：塑料或樹脂等。 The housing 310 can further include at least one through hole 312 formed in the housing 310. The material of the casing 310 is a material that is light in weight and has a certain strength, such as plastic or resin.
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。 The electroacoustic conversion device 300 can cover the through hole 312. Preferably, the electroacoustic conversion device 300 is spaced apart from and opposite to the through hole 312, and sound emitted from the electroacoustic conversion device 300 can be transmitted out of the earphone 30 through the through hole 312.
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內部。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固定於殼體310內部，或與該殼體310一體成型形成。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。 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 inside of the housing 310 or integrally formed with the housing 310. The electroacoustic conversion device 300 is supported by the support structure 320 and spaced apart from the housing 310.
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。 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. Wherein, at least one electroacoustic conversion device 300 includes a carbon nanotube structure 302. The electroacoustic conversion device 300 can further include at least two electrodes 304 spaced apart and electrically connected to the carbon nanotube structure 302.
可以理解，該一個殼體310內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可為不同類型的揚聲器，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。 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.
請參閱圖12，本技術方案第三實施例提供一種耳掛式耳機40，包括至少一殼體410、一掛鈎420及至少一電聲轉換裝置400。該掛鈎420為彎曲結構，可掛於使用者耳上。當該掛鈎420掛於使用者耳上時，該殼體410貼於使用者耳側。 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 has a curved structure and can be hung on the user's ear. When the hook 420 is hung on the user's ear, the housing 410 is attached to the ear side of the user.
該耳掛式耳機40的殼體310的內部結構與第一實施例的耳塞式耳機20的殼體210的內部結構基本相同。該電聲轉換裝置400設置於殼體410內部。其中，至少一個電聲轉換裝置400包括一奈米碳管結構402。該電聲轉換裝置400可進一步包括至少兩電極404間隔設置並與該奈米碳管結構402電連接。 The internal structure of the housing 310 of the earphone 40 is substantially the same as the internal structure of the housing 210 of the earphone 20 of the first embodiment. The electroacoustic conversion device 400 is disposed inside the housing 410. Wherein, at least one electroacoustic conversion device 400 includes a carbon nanotube structure 402. The electroacoustic conversion device 400 can further include at least two electrodes 404 spaced apart and electrically connected to the carbon nanotube structure 402.
可以理解，該一個殼體410內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可為不同類型的揚聲器，如電動式或壓電式等。該多個電聲轉換裝置400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。 It can be understood that a plurality of electroacoustic conversion devices 400 can be disposed inside the one housing 410, And achieve multi-channel sound effects. The plurality of electroacoustic conversion devices 400 can be different types of speakers, such as electric or piezoelectric. The plurality of electroacoustic transducing devices 400 cooperate with each other as long as one of the electroacoustic transducing devices 400 includes a carbon nanotube structure 402.
進一步地，該耳掛式耳機40的可包括一麥克風(圖未示)。另，該耳掛式耳機40可包括一無線信號接收單元(圖未示)及無線信號發送單元(圖未示)分別設置於殼體410內部，並分別與所述電聲轉換裝置400及麥克風電連接，從而使耳機40接收或發送無線音頻信號。 Further, the ear-hook earphone 40 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 housing 410, respectively, and the electroacoustic converting device 400 and the microphone, respectively. Electrically connected such that the headset 40 receives or transmits a wireless audio signal.
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，故該耳機的結構較為簡單，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、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，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100dB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。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。 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 and advantageous. To reduce the cost of the headset. Secondly, the earphone utilizes an externally input audio electrical signal to cause a temperature change of the electro-acoustic conversion device, thereby rapidly expanding and contracting the surrounding gas medium, thereby generating sound waves without a diaphragm, so the earphone composed of the electro-acoustic conversion device can be Work under non-magnetic conditions. 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), electroacoustic conversion composed of at least one layer of carbon nanotube structure The device can uniformly heat the surrounding gas medium, rapidly rise and fall temperature, generate periodic temperature changes, and perform rapid heat exchange with the surrounding gas medium, so that the surrounding gas medium rapidly expands and contracts, and emits a sound that can be perceived by the human ear. The sound emitted has a wide frequency range (1 Hz to 100 kHz), and the vocal intensity can reach 100 dB sound pressure level, and the sounding effect is good. Fourthly, since the carbon nanotubes have good mechanical strength and toughness, and have good durability, it is advantageous for preparing earphones of various shapes and sizes composed of a carbon nanotube structure, and is conveniently applied to Various fields. Fifthly, since the carbon nanotube has a large specific surface area, the carbon nanotube structure has good adhesion and can be directly adhered to the casing of the earphone, thereby making the earphone have a simpler structure.
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，自不能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內。 In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by those skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.
20‧‧‧耳機 20‧‧‧ headphones
200‧‧‧電聲轉換裝置 200‧‧‧Electroacoustic converter
202‧‧‧奈米碳管結構 202‧‧‧Nano Carbon Tube Structure
204‧‧‧電極 204‧‧‧Electrode
210‧‧‧殼體 210‧‧‧Shell
220‧‧‧支撑結構 220‧‧‧Support structure
230‧‧‧音頻數據線 230‧‧‧Audio data cable
240‧‧‧連接體 240‧‧‧Connector
250‧‧‧罩體 250‧‧‧ Cover
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| TW097140873A TWI462600B (en) | 2008-10-24 | 2008-10-24 | Ear phone |
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| TW201018256A TW201018256A (en) | 2010-05-01 |
| TWI462600B true TWI462600B (en) | 2014-11-21 |
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| CN103841481B (en) | 2012-11-20 | 2017-04-05 | 清华大学 | Earphone |
| CN103841501B (en) | 2012-11-20 | 2017-10-24 | 清华大学 | sound chip |
| CN103841483B (en) | 2012-11-20 | 2018-03-02 | 清华大学 | Earphone (Headset) |
| CN103841502B (en) | 2012-11-20 | 2017-10-24 | 清华大学 | sound-producing device |
| CN103841503B (en) | 2012-11-20 | 2017-12-01 | 清华大学 | sound chip |
| CN103841480B (en) * | 2012-11-20 | 2017-04-26 | 清华大学 | Earphone |
| CN103841507B (en) | 2012-11-20 | 2017-05-17 | 清华大学 | Preparation method for thermotropic sound-making device |
| CN103841479B (en) | 2012-11-20 | 2017-08-08 | 清华大学 | Earphone set |
| CN103841504B (en) | 2012-11-20 | 2017-12-01 | 清华大学 | Thermophone array |
| CN103841500B (en) | 2012-11-20 | 2018-01-30 | 清华大学 | Thermo-acoustic device |
| CN103841478B (en) | 2012-11-20 | 2017-08-08 | 清华大学 | Earphone |
| CN103841506B (en) | 2012-11-20 | 2017-09-01 | 清华大学 | The preparation method of thermophone array |
| CN103841482B (en) | 2012-11-20 | 2017-01-25 | 清华大学 | Earphone set |
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| US20070081681A1 (en) * | 2005-10-03 | 2007-04-12 | Xun Yu | Thin film transparent acoustic transducer |
| WO2007052928A1 (en) * | 2005-10-31 | 2007-05-10 | Kh Chemicals Co., Ltd. | Acoustic diaphragm and speaker having the same |
| TWI312337B (en) * | 2005-12-16 | 2009-07-21 | Hon Hai Prec Ind Co Ltd | Method for making the carbon nanotubes silk |
| TWM295872U (en) * | 2006-02-14 | 2006-08-11 | Jts Professional Co Ltd | Improved structure of earplug-shaped earphones |
| TWM315933U (en) * | 2007-02-15 | 2007-07-21 | Iatec Ltd | Active multi-speaker earphone |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201018256A (en) | 2010-05-01 |
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