!353582 - \ 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種發聲裝置，尤其涉及一種基於夺米 碳管的發聲裝置。 、不八 【先前技術】353582 - \ IX. Description of the Invention: [Technical Field] The present invention relates to a sound emitting device, and more particularly to a sound generating device based on a carbon nanotube. Not eight [previous technology]
^發聲裝置一般由信號輸入裝置和發聲元件組成。通過 =號輸入裝置輸入電信號給發聲元件，進而發出聲音。先 前技術中的發聲元件—般爲—揚聲器。該揚聲器爲:種把 電L號轉換成聲音信號的電聲器件。具體地，揚聲器可將 一定範圍内的音頻電功率信號通過換能方式轉變爲失真小 並具有足够聲壓級的可聽聲音。 先前的揚聲器的種類很多，根據其工作原理，分爲： 電動式揚聲器、電磁式揚聲器、靜電式揚聲器及壓電式揚 聲器。雖然它們的工作方式不同，但一般均爲通過産生機 械振動推動周圍的空氣’使空氣介質產生波動從而實現“電 -力-聲”之轉換。其中，電動式揚聲器的應用最爲廣泛。 請參閱圖1，先前的電動式揚聲器100通常由三部分 組成：音圈102、磁鐵1〇4以及振膜106。音圈1〇2通常採 用通電導體，當音圈1〇2中輸入一個音頻電流信號時，音 圈102相當於一個載流導體。由於放在所述磁鐵1〇4產生 的磁場裏，根據載流導體在磁場_會受到力的作用而運動 的原理，音圈102會受到一個大小與音頻電流成正比、方 向隨音頻電流變化而變化的力。因此，音圈1〇2就會在所 述磁鐵104産生的磁場作用下産生振動，並帶動振臈1〇6 ，，振膜1〇6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，該電動式揚聲器100的結構較爲 複雜，且其必須在有磁的條件下工作。 偁較爲 自九十年代初以來’以奈米碳管(請參見Helical microtubules of graphitic carbon, Nature, Sumio Iijima, v〇l 354, P56(1991))爲代表的奈米材料以其獨特的結構和性質 2起了人們極大的關注。近幾年來，隨著奈米碳管及奈米 ，材料研究的不斷深人，其廣_制前景不斷顯現出來。 例如，由於奈米碳管所具有的獨特的電磁學、光學、力學、 二匕學等性能，大量有關其在場發射電子源、傳感器、新型 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。 有蓉於此，提供-種結構簡單，可在無磁的條件下工 作的發聲裝置實為必要。 【發明内容】 一種發聲裝置，其包括：―信號輸人裝置；以及一發 ::件，該發聲元件與所述信號輸入裝置的兩端電連接’· 發：：聲元件至少部分設置在一支撑結構表面，該 括夕少一層奈米碳管薄膜’該奈米碳管薄膜包 二目互平㈣奈米碳管，所述信號輸人裝置輸入電信 =該發聲元件，通過該發聲元件加熱周圍氣體介質發出 下優Γ交ί先前技術’本技術方案提供的發聲裝置具有以 優點.其一，由於所述發聲裝置中的發聲元件僅包括奈 1353582 .米碳管薄膜，無需磁鐵等其它複雜結構，故該發聲裝置的 結構較爲簡單’㈣於降低該發聲裝置的成本。其二，該 發聲裝置利用輸入信號造成該發聲元件溫度變化，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’且Μ發聲元件組成的發聲裝置可在無磁的條件下工 作。其三，由於奈米碳管薄膜具有較小的熱容和大的比表 面積，且奈米碳管薄膜中的奈米碳管相互平行、均勻分布 •且部分奈米碳管的兩端分別與所述信號輸入裝置的兩端電 •連接’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薄膜組成的發聲元件可充分利用 奈求碳管的特性，如優異的軸向導電、導熱性能均勾地 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 音的頻率範圍較寬（1Hz〜100kHz)，發聲效果較好，且所 φ述發聲裝置的響應速度較快、靈敏度較高。另外，當該發 聲兀件厚度比較小時，例如小於1〇微米，該發聲元件具^ 較高的透明度，故所形成的發聲裝置爲透明發聲裝置了可 以直接安裝在各種顯示裝置、手機顯示屏的顯示表面或油 畫顯示裝置、油晝等的表面作冑節省$間的透明發聲裝 置。其四，由於奈米碳管具有較好的機械强度和韌性，^ 由相互平行的奈米碳管組成的至少一層奈米碳管薄臈具 較好的機械强度和韌性，耐用性較好，從而有利於製^ 奈米碳管薄膜組成的各種形狀、尺寸的發聲裝置，進 1353582 便地應用於各種領域。其五，由於所述發聲元件至少部分 δ又置在所述支撑結構表面’所述發聲元件可以承受强度較 高的信號輸入，進而可增强所述發聲裝置的發聲效果。 【實施方式】 以下將結合附圖詳細說明本技術方案實施例的發聲裝 置。 請參閱圖2,本技術方案第一實施例提供一種發聲裝 置10,該發聲裝置1〇包括一信號輸入裝置12，一發聲元 件14，一支撑結構16，一第一電極142以及一第二電極 144。所述發聲元件14設置於所述支撑結構16表面。所述 第一電極142和第二電極144間隔設置在所述發聲元件14 的兩端或表面，且與所述發聲元件14電連接。所述第一電 極142和第二電極144通過外接導線149與所述信號輸入 裝置12的兩端電連接，用於將所述信號輸入裝置12中的 電6號輸入到所述發聲元件14中。 所述支撑結構16主要起支撑作用，其形狀不限，任何 具有確定形狀的物體，如一墙壁或桌面，均可作爲本技術 方案第-實施例中的支撑結構16。具體地，該支撐結構Μ 可以爲-平面結構或一曲面結構，並具有一表面。此 ，發聲元# 14直接設置並貼合於該支縣構16的表面 。由於該發聲70件14整體通過支撑結構16支撑，因此 該發聲元件14可以承受强度較高的信號輸入，從 向的發聲强度。 』八令平乂 該支撑結構16的材料不限，可以爲一硬性材料，如金 ⑶3582 剛石、玻璃或石英。另外，所述支撑結構16還可爲一柔性 材料，如塑料或樹脂。優選地，該支撑結構16的材料應具 有較好的絕熱性能，從而防止該發聲元件14産生的熱量過 度的被該支撑結構16吸收，無法達到加熱周圍氣體介質進 而發聲的目的。另外，該支撑結構16應具有一較爲粗糙的 表面，從而可以使設置於上述支撑結構16表面的發聲元件 空氣或其他外界介質具有更大的接觸面積，進而可在 _ 一定程度上改善所述發聲裝置10的發聲效果。 所述發聲元件14包括至少一層奈米碳管薄膜。請參見 圖3，所述奈米碳管薄膜包括多個相互平行且並排設置的 :米妷官。相鄰兩個奈米碳管之間通過凡德瓦爾力緊密結 合。所述奈米碳管薄膜中的相鄰兩個奈米碳管之間的距離 ^於5 0微米。所述奈米碳管薄膜的長度爲奈米碳管薄膜中 單根奈米碳管的長度。所述奈米碳管薄膜的寬度不限。所 述奈米奴官薄膜的厚度爲〇·5奈米〜1〇〇微米。所述奈米碳 _盲薄膜的長度爲1微米〜3〇毫米。進一步地，所述發聲元 件14包括至少兩層重叠設置的奈米碳管薄膜，相鄰兩層奈 米石反官薄膜之間通過凡德瓦爾力緊密結合，且相鄰兩層奈 米碳管薄膜中的奈米碳管之間具有一交叉角纟α，α大於 等於〇度且小於等於90度，具體可依據實際需求製備。當 相鄰兩層奈米碳管薄膜中的奈米碳管之間的夹角α大於〇 度時，所述發聲元件14中的多個奈米碳管形成一網狀結 構，且該網狀结構包括多個均勻分布的微孔，其孔徑小於 5〇微米。當所述發聲元件14包括多層奈米碳管薄膜時， 1353582 :$於相鄰兩層奈米碳管薄臈之間通過凡德瓦爾力緊密結 • t，故所述發聲元件14本身具有很好的自支撑性能。所述 米碳皆薄膜中的奈米碳管可爲單壁奈米碳管、雙壁奈米 炭笞及夕壁奈米碳管中的一種或多種。所述單壁奈米碳管 的直徑爲0.5奈米〜50奈米，所述雙壁奈米碳管的直徑爲 1.〇奈米〜5〇奈米’所述多壁奈米碳管的直徑爲15奈米〜5〇 奈米Y所述發聲元件14的厚度爲0·5奈米〜i毫米。當該 _發聲元件14的厚度比較小時，例如小於1〇微米，該發聲 元件14具有較高的透明度’故採用該發聲元件14的發聲 裝置10爲透明發聲裝置1〇，可以直接安裝在各種顯示裝 置、手機顯示屏的顯示表面或油晝的表面作爲節省空間的 透明發聲裝置1〇。 山々本技術方案實施例中，所述發聲元件14包括兩層奈米 石厌管薄膜，且奈米碳管在該兩層奈米碳管薄膜中沿同一方 向排列$述發聲兀件14的長度爲3厘米，寬度爲3厘米， 籲厚度爲5〇奈米。 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，該奈米碳管薄膜本身有很好的黏附性，故採用該 至少-層奈求碳管薄膜作發聲元件14時，所述發聲元件 14與所述支撑結構16之間可以直接黏附固^。進一步地， 在所述發聲元件14與所述支撑結構16之間還可以進一步 包括-黏結層（圖未示）。所述黏結層可設置於所述發聲元 件二4的表面。所述黏結層可以將所述發聲元件μ更好地 固疋於所述支撑結構16的表面。所述黏結層的材料可爲絕^The sounding device is generally composed of a signal input device and a sounding element. The electrical signal is input to the sounding element through the = input device, and the sound is emitted. The sounding component of the prior art is generally a speaker. The speaker is an electroacoustic device that converts the electric L number 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, and according to their working principle, they are divided into: electric speakers, electromagnetic speakers, electrostatic speakers and piezoelectric speakers. Although they work in different ways, they generally convert the air medium by generating mechanical vibrations to cause "air-force-sound" conversion. Among them, electric speakers are the most widely used. Referring to Fig. 1, the prior electric speaker 100 is generally composed of three parts: a voice coil 102, a magnet 1〇4, and a diaphragm 106. The voice coil 1〇2 usually uses a current-carrying conductor. When an audio current signal is input to the voice coil 1〇2, the voice coil 102 corresponds to a current-carrying conductor. Due to the magnetic field generated by the magnet 1〇4, the voice coil 102 is subjected to a magnitude proportional to the audio current and the direction varies with the audio current according to the principle that the current carrying conductor moves under the action of the magnetic field. The power of change. Therefore, the voice coil 1〇2 generates vibration under the action of the magnetic field generated by the magnet 104, and drives the vibrating body 1〇6, and the air before and after the diaphragm 1〇6 also vibrates, converting the electric signal into sound waves. Radiation to the surroundings. However, the structure of the electrodynamic speaker 100 is complicated, and it must operate under magnetic conditions.奈The nanomaterials represented by the carbon nanotubes (see Helical microtubules of graphitic carbon, Nature, Sumio Iijima, v〇l 354, P56 (1991)) have their unique structure since the early 1990s. And nature 2 has received great attention. In recent years, with the carbon nanotubes and nano-carbon, the research of materials has become more and more serious, and the prospects of its wide-ranging system are constantly emerging. For example, due to the unique electromagnetic, optical, mechanical, and binary science properties of carbon nanotubes, a large number of applications for field emission electron sources, sensors, new materials, soft ferromagnetic materials, etc. Was reported. However, carbon nanotubes have not been found in the prior art for use in the field of acoustics. There is a sounding device which is simple in structure and can be operated under non-magnetic conditions. SUMMARY OF THE INVENTION A sounding device includes: a “signal input device”; and a hair piece: the sound emitting element is electrically connected to both ends of the signal input device. • The sound element is at least partially disposed in a Supporting the surface of the structure, the outer layer of the carbon nanotube film is less than one layer of carbon nanotube film, the carbon nanotube film is packaged with two meshes (four) carbon nanotubes, and the signal input device inputs telecommunications = the sounding element is heated by the sounding element The surrounding gas medium is issued under the circumstance of the prior art. The sounding device provided by the technical solution has the advantage. First, since the sounding element in the sounding device includes only the 1353582. m. carbon tube film, no other complex such as a magnet is needed. The structure, so the structure of the sounding device is relatively simple '(4) to reduce the cost of the sounding device. Secondly, the sounding device uses the input signal to cause the temperature of the sounding element to change, so that the surrounding gas medium rapidly expands and contracts, thereby generating sound waves, without the diaphragm, and the sounding device composed of the sounding elements can be in the non-magnetic condition. jobs. Third, because the carbon nanotube film has a small heat capacity and a large specific surface area, and the carbon nanotubes in the carbon nanotube film are parallel and evenly distributed, and the ends of the partial carbon nanotubes are respectively The two ends of the signal input device are electrically connected. After the input signal, according to the change of the signal strength (such as current intensity), the sounding component composed of at least one layer of carbon nanotube film can fully utilize the characteristics of the carbon tube. Such as excellent axial conduction and thermal conductivity, the surrounding gas medium is heated, the temperature is rapidly raised and lowered, periodic temperature changes are generated, and rapid heat exchange with the surrounding gas medium is performed to rapidly expand and contract the surrounding gas medium. The sound that the ear can perceive, and the frequency range of the emitted sound is wide (1 Hz to 100 kHz), the sounding effect is better, and the response speed of the φ speaking sound device is faster and the sensitivity is higher. In addition, when the thickness of the sounding element is relatively small, for example, less than 1 μm, the sounding element has a high transparency, so that the sound generating device is a transparent sounding device that can be directly mounted on various display devices and mobile phone display screens. A transparent sounding device that saves $ between the surface of the display surface or the oil painting display device, the oil raft, and the like. Fourth, since the carbon nanotubes have good mechanical strength and toughness, at least one layer of carbon nanotubes composed of mutually parallel carbon nanotubes has good mechanical strength and toughness, and has good durability. Therefore, it is advantageous for the sounding device of various shapes and sizes composed of the carbon nanotube film, and is applied to various fields in 1353582. Fifthly, since the sounding element is at least partially δ placed on the surface of the support structure, the sounding element can withstand a high-intensity signal input, thereby enhancing the sounding effect of the sounding device. [Embodiment] Hereinafter, a sound emitting device of an embodiment of the present technical solution will be described in detail with reference to the accompanying drawings. Referring to FIG. 2, a first embodiment of the present invention provides a sounding device 10, which includes a signal input device 12, a sounding component 14, a support structure 16, a first electrode 142, and a second electrode. 144. The sounding element 14 is disposed on a surface of the support structure 16. The first electrode 142 and the second electrode 144 are disposed at two ends or surfaces of the sound emitting element 14 and are electrically connected to the sound emitting element 14. The first electrode 142 and the second electrode 144 are electrically connected to both ends of the signal input device 12 through an external wire 149 for inputting the electric number 6 in the signal input device 12 into the sound emitting element 14. . The support structure 16 mainly serves as a support, and its shape is not limited. Any object having a certain shape, such as a wall or a table top, can be used as the support structure 16 in the first embodiment of the present technical solution. Specifically, the support structure Μ may be a - planar structure or a curved structure and has a surface. Therefore, the sound element #14 is directly set and attached to the surface of the county structure 16. Since the sound generating member 70 is integrally supported by the support structure 16, the sound emitting member 14 can withstand a high-intensity signal input and a vocal intensity.八八平平乂 The material of the support structure 16 is not limited and may be a hard material such as gold (3) 3582 diamond, glass or quartz. Additionally, the support structure 16 can also be a flexible material such as plastic or resin. Preferably, the material of the support structure 16 should have better thermal insulation properties, so as to prevent the excessive heat generated by the sound generating element 14 from being absorbed by the support structure 16, and the purpose of heating the surrounding gaseous medium to sound can not be achieved. In addition, the support structure 16 should have a relatively rough surface, so that the sounding element air or other external medium disposed on the surface of the support structure 16 can have a larger contact area, thereby improving the degree to a certain extent. The sounding effect of the sounding device 10. The sounding element 14 includes at least one layer of carbon nanotube film. Referring to FIG. 3, the carbon nanotube film comprises a plurality of parallel and side by side: michao. The adjacent two carbon nanotubes are tightly bonded by Van der Waals force. The distance between two adjacent carbon nanotubes in the carbon nanotube film is ^ 50 μm. The length of the carbon nanotube film is the length of a single carbon nanotube in the carbon nanotube film. The width of the carbon nanotube film is not limited. The thickness of the nano slave film is 〇·5 nm to 1 μm. The nanocarbon-blind film has a length of 1 micrometer to 3 millimeters. Further, the sound emitting element 14 comprises at least two layers of carbon nanotube film which are arranged in an overlapping manner, and the two adjacent layers of the nano-striped anti-official film are closely combined by van der Waals force, and the adjacent two layers of carbon nanotubes are closely combined. The carbon nanotubes in the film have a cross angle 纟α, α is greater than or equal to the twist and less than or equal to 90 degrees, and can be prepared according to actual needs. When the angle α between the carbon nanotubes in the adjacent two layers of carbon nanotube film is greater than the twist, the plurality of carbon nanotubes in the sound generating element 14 form a network structure, and the mesh The structure includes a plurality of uniformly distributed micropores having a pore size of less than 5 microns. When the sounding element 14 comprises a plurality of layers of carbon nanotube film, 1353582: $ is closely connected between the adjacent two layers of carbon nanotubes by van der Waals force, so the sounding element 14 itself has a very Good self-supporting performance. The carbon nanotubes in the carbon-carbon film may be one or more of a single-walled carbon nanotube, a double-walled nanocarbon anthrax, and a Nicholas carbon nanotube. The diameter of the single-walled carbon nanotube is 0.5 nm to 50 nm, and the diameter of the double-walled carbon nanotube is 1. 〇 nanometer ~ 5 〇 nanometer 'the multi-walled carbon nanotube The thickness of the sound emitting element 14 having a diameter of 15 nm to 5 Å N is 0.55 nm to 1 mm. When the thickness of the sounding element 14 is relatively small, for example, less than 1 μm, the sound emitting element 14 has a high transparency. Therefore, the sounding device 10 using the sound emitting element 14 is a transparent sounding device 1 , and can be directly mounted on various displays. The display surface of the device, the display screen of the mobile phone or the surface of the oil raft is used as a space-saving transparent sounding device. In the embodiment of the present invention, the sounding element 14 includes two layers of nano-peel tube film, and the carbon nanotubes are arranged in the same direction along the length of the sounding element 14 in the two-layer carbon nanotube film. It is 3 cm wide and 3 cm wide, and the thickness is 5 〇 nanometer. Since the carbon nanotube has a very large specific surface area, the carbon nanotube film itself has good adhesion under the action of van der Waals force, so when the at least one layer is used as the sounding element 14 The sound-emitting element 14 and the support structure 16 can be directly adhered to each other. Further, a bonding layer (not shown) may be further included between the sound emitting element 14 and the support structure 16. The bonding layer may be disposed on a surface of the sounding element 2 . The bonding layer can better secure the sounding element μ to the surface of the support structure 16. The material of the bonding layer can be absolutely
1111
丄〜JJOZ 可爲具有一定導電性能的材料。本實施例中， 所述黏結層爲一層銀膠。 苴且極142和第二電極144由導電材料形成， 雷二 。具體地’所述第-電極142和第二 可選擇爲層狀、棒狀、塊狀或其它形 一電極142和第-雷盔，J w迅弟 金屬性奈米碳管:= 二料可選擇爲金屬、導電朦、 142和望n 物（IT〇)[所述第—電極 H 玉144用於實現所述信號輸入裝置12盥所述 發聲元件14之間的電連接》所述第-電極142和第1' = 又惲、構16表面，所述第一電極142和第-雷 ==隔設置固定在所述發聲元件Μ兩端或表:電 1 、/ 142和第二電極144的設置與所述發聲元件 的奈米石厌官的排列方向有關至少部分奈求碳管的兩 /刀別與所述第一電極142和第二電極144 =實施财’所述第一電極142和第二電極144 = ^ 这第一電極142和第二電極144間隔設置 固疋在所述發聲元件14兩端，且所述發聲元件中的全部夺 米碳管的兩端分別與所述第一電極142和第二電極Μ電 連接纟於所述第_電極142和第二電極W間隔設置， 所述發聲元件14應用於發聲裝置iq時能接人—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，該奈求碳管薄膜本身有很好的黏 附性’故採用該至少—層奈米碳管薄膜作發聲元件Μ時，丄~JJOZ can be a material with certain conductivity. In this embodiment, the bonding layer is a layer of silver glue. The crucible electrode 142 and the second electrode 144 are formed of a conductive material, Ray II. Specifically, the first electrode 142 and the second layer may be a layered, rod-shaped, block-shaped or other shaped electrode 142 and a thirteenth helmet, Jw Xunzi metal carbon nanotube: = two materials The selection is metal, conductive cesium, 142, and ITO (IT 〇) [the first electrode H jade 144 is used to achieve electrical connection between the signal input device 12 and the sound emitting element 14" - The electrode 142 and the first ''1' are further configured to be affixed to the surface of the sound-emitting element 或 or the table: the electric 1 , / 142 and the second electrode 144 The arrangement is related to the arrangement direction of the nano-stones of the sound-emitting element, at least in part, the two-knife of the carbon tube and the first electrode 142 and the second electrode 144 are implemented. And the second electrode 144 = ^, the first electrode 142 and the second electrode 144 are spaced apart from each other at both ends of the sound emitting element 14, and both ends of the carbon nanotubes in the sounding element are respectively associated with the first An electrode 142 and a second electrode are electrically connected to each other, and the first electrode 142 and the second electrode W are spaced apart, and the sound emitting element 14 is applied to the sounding device. iq can access when - given the resistance to avoid short circuit phenomenon. Since the carbon nanotube has a very large specific surface area, the carbon nanotube film itself has good adhesion under the action of van der Waals force, so when the at least layer of carbon nanotube film is used as the sounding element ,
12 1353582 . * 所述第t極142和第二電極144與所述料元件i4之間 可以直接黏附固定，並形成报好的電接觸。12 1353582. * The t-th pole 142 and the second electrode 144 and the material element i4 can be directly adhered and fixed, and a reported electrical contact is formed.
進-步地’所述第一電極142和第二電極144與所述 聲疋件14 <間還可以進一步包括一導電㈣層（圖未 τ所述導電黏結層可設置於所述發聲元件Μ的表面 上。所述導電黏結層在實現第—電極142和第二電極144 與所述發聲元件14電接觸的同時’還可以將所述第-電極 142和第二電極144更好地固定於所述發聲元件w的表面 上。本實施例令，所述導電黏結層爲一層銀膠。 可以理解，本技術方案第一實施例可進一步設置多個 電極於所述發聲元件14表面，其數量不限，只需確保任意 兩個相鄰的電極均間隔設置、與所述發聲元件14電連接， 且均刀別與所述信號輸入裝置12的兩端電連接即可。 可以理解，由於所述發聲元件14設置在所述支撑結構 16表面，故所述第一電極142與第二電極144爲可選擇的 結構。所述信號輸入裝置12可直接通過導線149或電極引 線等方式與所述發聲元件14電連接。只需確保所述信號輸 入裝置12能將電信號輸入給所述發聲元件14即可。任何 可實現所述信號輸入裝置12與所述發聲元件14之間電連 接的方式都在本技術方案的保護範圍之内。 所述彳§说輸入裝置12輸入的信號包括交流電信號戍 音頻電信號等。所述信號輸入裝置12通過導線149與所述 第一電極142和第二電極144電連接，並通過所述第一電 極142和第二電極144將信號輸入到所述發聲元件14中。 13 : 上述發聲裝置10在使用時，由於奈米碳管薄膜具有較 、的熱容和大的比表面積，且奈米碳管㈣中的奈米碳管 平#句勻刀布且部分奈米碳管的兩端分別與所述信 ，輸人裝置12的兩端電連接，在輸人信號後，根據信號强 又如電抓强度）的變化，由至少一層奈米碳管薄膜組成 =發聲元件14可充分利用奈米碳管的特性，如優異的轴向 田1： ’均g地加熱周圍的氣體介質、迅速升降 ·/皿▲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 好且所述發聲裝置10的響應速度較快、靈敏度較高。本 技術方案實施例提供的發聲裳置10的發聲頻率範圍爲i 赫兹至10萬赫兹（即1Hz〜1〇〇kHz)。故本技術方案實施例 中，所述發聲TL件I4的發聲原理爲“電熱聲，，的轉換， 具有廣泛的應用範圍。另外，由於本技術方案實施例中的 φ發聲元件10可由多層奈米碳管薄膜組成，且多層奈米碳管 薄膜中的奈米碳管可沿不同方向排列，故由所述多個奈米 碳管薄膜組成的發聲元件14具有較好的勤性和機械强 度’所述發聲元件U可方㈣製成各種形狀和尺寸的發聲 裝置10，該發聲裝置10可方便地應用於各種可發聲的装 置中’如音響、手機、MP3、MP4、電視、計算機等電子 領域及其它發聲裝置中。 請參閱圖4,本技術方案第二實施例提供一種發聲裴 置20,該發聲裝置2〇包括一信號輸入裝置22、一發聲^ 1353582 件24、一支撑結構26、一第一電極242、一第二電極244、 第二電極246以及一第四電極248。 本技術方案第二實施例中的發聲裝置20與第一實施 例^的發聲裝置10的結構基本相同，區別在於，本技術方 案第一實施例中的發聲元件24環繞所述支撑結構26設 置，形成一環形發聲元件24。所述支撑結構26的形狀不 限可爲任何立體結構。優選地，所述支撐結構％爲一立 鲁方體、一圓錐體或一圓柱體。本技術方案實施例中，所述 支撑結構26爲一圓柱體。所述第一電極242、第二電極 244、第三電極246和第四電極248間隔設置在所述發聲元 件24表面並與所述發聲元件24電連接。任意兩個相鄰的 電極均分別與所述信號輸入裝置22的兩端電連接，以使位 於相鄰電極之㈣發聲元件24接人輸人信號。具體地，先 將不相鄰的兩個電極用導線249連接後與所述信號輸入裝 置22的一端電連接，剩下的兩個電極用導線249連接後盥 ♦所述信號輸人裝置22的另—端電連接。本技術方案實施例 中，可先將所述第一電極242和第三電極246用導線249 連接後與所述信號輸入裝f22的一端電連接，再將所述第 二電極244和第四電極248用導線249連接後與所述信號 輸入裝置22的另一端電連接。上述連接方式可實現相鄰電 極之間的奈米碳管薄膜的並聯。並聯後的奈米碳管薄膜具 有較小的電阻，可降低工作電壓。且，上述連接方式可使 所述發聲元件24具有較大的輻射面積，且發聲强度得到增 强，從而實現環繞發聲效果。 9 15 c S ) 1353582 口二以理ί，本技術方案可設置多個電極，其數量不限， 八而確保任忍兩個相鄰的電極均間隔設置、與所述 t 24電連接’且均分別與所述信號輸入裝置22的：端電 連接即可。 細罨 請參閱圖5,本技術方案第三實施例提供一種發聲裝 置30，該發聲裝置3〇句杯 、 衣直川包括一 k號輸入裝置32、一發聲元 件34、一支撑結構36、一第一雷炻m ^ 乐卷極342、一第二電極344。 φ 本技術方案第三實施例中的發聲裝置30與第一實施 例中的發聲裝置10的結構基本相同，區财於，本技術方 案第三實施例令的發聲元件34部分設置在所述支撑结構 36表面’從而在所述發聲元件34纟面至支撑結構％之間 形成一攏音空間。所形成的攏音空間可爲一封閉空間或一 開放空間。所述支撑結構36爲一 v型或U型結構或一具 有狹窄開口的腔體。當所述支撐結構36爲一具有狹窄開口 的腔體時，該發聲元件34可平鋪固定設置於該腔體的開口 •上，從而形成一亥姆霍茲共振腔。該支撑結構36的材料爲 木質、塑料、金屬或玻璃等。本技術方案實施例中，所述 支撑結構36爲一 V型結構。所述發聲元件34設置在所述 V型結構的兩端，即從v型結構的一端延伸至另一端，使 所述發聲元件34部分懸空設置，從而在所述發聲元件34 表面至支撑結構36之間形成一攏音空間。所述第一電極 342和第一電極344間隔設置在所述發聲元件34表面。所 述第一電極342和第二電極344連接導線349後與所述信 號輸入裝置32的兩端電連接。所述V型支撑結構36町反 16 1353582 射所述發聲元件34位於所述支撑結構36 一側的聲波，增 •强所述發聲裝置3〇的發聲效果》 本技術方案實施例提供的發聲裝置具有以下優點：1 一，由於所述發聲裝置中的發聲元件僅包括奈求碳管薄 膜，無需磁鐵等其它複雜結構，故該發聲裝置的結構較爲 簡單，有利於降低該發聲裝置的成本。其二，該發聲装置 利用輸入信號造成該發聲元件溫度變化，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，且該 發聲元件組成的發聲裝置可在無磁的條件下工作。其三， 由米碳管薄膜具有較小的熱容和大的比表面積，且奈 米碳管薄膜中的奈米碳管相互平行、均勻分布且部分奈米 碳管的兩端分別與所述信號輸入裝置的兩端電連接，在輸 入信號後，根據信號强度（如電流强度）的變化，由至少 一層奈米碳管薄膜組成的發聲元件可充分利用奈米碳管的 特^，如優異的軸向導電、導熱性能，可均句地加熱周圍 _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，且所發出的冑音的頻率 範圍較寬（mz〜100kHz)，發聲效果較好，且所述發聲裝 置的響應速度較快、靈敏度較高。另外’當該發聲元件厚 度比較小時，例如小於10微米，該發聲元件具有較高的透 明度’故所形成的發聲裝置爲透明發聲裴置，可以直接安 裝在各種顯示裝置、手機顯示屏的顯示表面或油晝顯示= 置、油畫等的表面作爲節省空間的透明發聲裝置。其四， 17 (S ) 1353582 由於所述發聲元件中的多個奈米碳管形成一網狀結構，且 ..網狀結構由多個孔經小於50微来的微孔組成，所述微孔的 存在可增大所述發聲元件的比表面積，從而有利於改善所 述發聲7G件的發聲效果。其五，由於奈求碳管具有較好的 機械强度和韌性，則由至少兩層由奈米碳管沿不同方向排 列的奈米碳官薄膜組成的發聲元件具有較好的機械强度和 韌性，耐用性較好，從而有利於製備由發聲元件組成的各 參種形狀、尺寸的發聲裝置，進而方便地應用於各種領域。 .其六，當所述支撑結構爲一平面時，所述發聲元件直接設 置並貼合於該支撑結構的表面，故該發聲元件可以承受强 度較高的信號輸入，從而具有較高的發聲强度；當所述支 撑結構爲一 v型、u型結構或一具有狹窄開口的腔體時， 所述發聲元件部分設置於所述支撑結構表面，形成一攏音 空間，所述支撑結構可反射所述發聲元件發出的聲波，增 强所述發聲裝置的發聲效果。 s • 综上所述，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内。 【圖式簡單說明】 圖1係先前技術中揚聲器的結構示意圖。 圖2係本技術方案第一實施例發聲裝置的結構示意 圖。 18 1353582 圖3係本技術方案第一實施例發聲裝置中奈米 ， 膜的掃描電鏡照片 S薄 圖4係本技術方案第二實施例發聲裴置的結構示立 圖5係本技術方案第三實施例發聲裝置的結構示音 【主要元件符號說明】 揚聲器 音圈 磁鐵 振膜 發聲裴置 信號輪入裝置 發聲元件 支撐結構 _第一電極 第二電極 導線 第三電極 第四電極 100 102 104 106 10, 20, 30 12, 22, 32 14, 24, 34 16, 26, 36 142, 242, 342 144, 244, 344 149, 249, 349 246 248 19Further, the first electrode 142 and the second electrode 144 and the sonar member 14 may further include a conductive (four) layer (the conductive adhesive layer may be disposed on the sound emitting element) On the surface of the crucible, the conductive bonding layer can also better fix the first electrode 142 and the second electrode 144 while achieving the electrical contact between the first electrode 142 and the second electrode 144 and the sound emitting element 14. On the surface of the sound emitting element w. In this embodiment, the conductive adhesive layer is a layer of silver paste. It can be understood that the first embodiment of the present technical solution can further provide a plurality of electrodes on the surface of the sound emitting element 14 . The number is not limited, and it is only necessary to ensure that any two adjacent electrodes are spaced apart from each other and electrically connected to the sound emitting element 14, and both of them are electrically connected to both ends of the signal input device 12. The sounding element 14 is disposed on the surface of the support structure 16, so that the first electrode 142 and the second electrode 144 are optional structures. The signal input device 12 can directly pass through the wire 149 or the electrode lead. Speech element 14 electrical connection. It is only necessary to ensure that the signal input device 12 can input an electrical signal to the sounding element 14. Any way to achieve electrical connection between the signal input device 12 and the sounding element 14 is Within the scope of the technical solution, the signal input by the input device 12 includes an alternating current signal, an audio electric signal, etc. The signal input device 12 passes through the wire 149 and the first electrode 142 and the second electrode. 144 is electrically connected, and a signal is input into the sound emitting element 14 through the first electrode 142 and the second electrode 144. 13: The sound generating device 10 has a relatively small heat capacity when in use. And a large specific surface area, and the carbon nanotubes in the carbon nanotubes (4) are flat and the two ends of the carbon nanotubes are electrically connected to the two ends of the input device 12, respectively. After inputting the signal, according to the change of signal strength and electric grip strength, composed of at least one layer of carbon nanotube film = sounding element 14 can make full use of the characteristics of the carbon nanotube, such as excellent axial field 1: ' g to heat the surrounding gas Rapidly rise and fall / / ▲ ▲ produce periodic temperature changes, and rapid heat exchange with the surrounding gas medium 'to make the surrounding gas medium rapidly expand and contract, emit a human-perceived sound, and the frequency range of the sound emitted The sounding effect is good, and the sounding device 10 has a fast response speed and high sensitivity. The utterance frequency of the vocal output 10 provided by the embodiment of the present technical solution ranges from i Hz to 100,000 Hz (i.e., 1 Hz to 1 〇〇 kHz). Therefore, in the embodiment of the technical solution, the sounding principle of the sounding TL device I4 is “electrical heating,” and has a wide range of applications. In addition, since the φ sounding element 10 in the embodiment of the technical solution may be a plurality of layers of nanometers. The carbon nanotube film is composed, and the carbon nanotubes in the multi-layered carbon nanotube film can be arranged in different directions, so the sounding element 14 composed of the plurality of carbon nanotube films has good diligence and mechanical strength. The sounding element U can be made into a sounding device 10 of various shapes and sizes, and the sounding device 10 can be conveniently applied to various sound-emitting devices, such as audio, mobile phones, MP3, MP4, television, computers, and the like. Referring to FIG. 4, a second embodiment of the present invention provides a sounding device 20, which includes a signal input device 22, a sounding device 1353582 member 24, a support structure 26, and a a first electrode 242, a second electrode 244, a second electrode 246, and a fourth electrode 248. The sounding device 20 in the second embodiment of the present invention and the sounding device 10 of the first embodiment The same is true, except that the sound emitting element 24 in the first embodiment of the present technical solution is disposed around the support structure 26 to form an annular sounding element 24. The shape of the support structure 26 is not limited to any three-dimensional structure. The support structure % is a rectangular body, a cone or a cylinder. In the embodiment of the technical solution, the support structure 26 is a cylinder. The first electrode 242, the second electrode 244, The third electrode 246 and the fourth electrode 248 are spaced apart from each other and electrically connected to the sound emitting element 24. Any two adjacent electrodes are electrically connected to both ends of the signal input device 22, respectively. Therefore, the (four) sounding element 24 located at the adjacent electrode is connected to the input signal. Specifically, the two adjacent electrodes are connected by the wire 249 and then electrically connected to one end of the signal input device 22, and the remaining two are connected. After the electrodes are connected by wires 249, the other ends of the signal input device 22 are electrically connected. In the embodiment of the present invention, the first electrodes 242 and the third electrodes 246 may be connected by wires 249. The letter One end of the input device f22 is electrically connected, and the second electrode 244 and the fourth electrode 248 are connected by a wire 249 and electrically connected to the other end of the signal input device 22. The connection manner can be realized between adjacent electrodes. The parallel connection of the carbon nanotube films. The parallel carbon nanotube film has a small electrical resistance to reduce the operating voltage. Moreover, the above connection method can make the sound emitting element 24 have a large radiation area and the sound intensity. It is enhanced to achieve a surround sound effect. 9 15 c S ) 1353582 Port Eryi ί, this technical solution can be set with a plurality of electrodes, the number of which is not limited, and eight to ensure that the two adjacent electrodes are spaced apart, It is electrically connected to the t 24 and is electrically connected to the terminal of the signal input device 22, respectively. Referring to FIG. 5, a third embodiment of the present invention provides a sounding device 30. The sounding device 3 includes a k-number input device 32, a sounding component 34, a support structure 36, and a first sounding device. A Thunder m ^ Le pole 342, a second electrode 344. φ The sound emitting device 30 in the third embodiment is basically the same as the sound generating device 10 in the first embodiment, and the sound emitting device 34 in the third embodiment of the present technical solution is partially disposed on the support. The surface 36 of the structure 36 thus forms a sounding space between the face of the sound emitting element 34 and the support structure %. The resulting sounding space can be a closed space or an open space. The support structure 36 is a v-shaped or U-shaped structure or a cavity having a narrow opening. When the support structure 36 is a cavity having a narrow opening, the sounding element 34 can be tiled and fixed on the opening of the cavity to form a Helmholtz resonant cavity. The material of the support structure 36 is wood, plastic, metal or glass. In the embodiment of the technical solution, the support structure 36 is a V-shaped structure. The sounding element 34 is disposed at both ends of the V-shaped structure, that is, extending from one end of the V-shaped structure to the other end, so that the sound-emitting element 34 is partially suspended, so that the surface of the sound-emitting element 34 to the support structure 36 A sounding space is formed between them. The first electrode 342 and the first electrode 344 are spaced apart from each other on the surface of the sound emitting element 34. The first electrode 342 and the second electrode 344 are electrically connected to both ends of the signal input device 32 after being connected to the wire 349. The V-shaped support structure 36, the reverse 16 1353582, emits sound waves of the sound-emitting element 34 on one side of the support structure 36, and enhances the sounding effect of the sound-emitting device 3〇. The sound-generating device provided by the embodiment of the present technical solution The utility model has the following advantages: 1 . Since the sounding component in the sounding device only includes the carbon nanotube film, and no other complicated structure such as a magnet is needed, the structure of the sounding device is relatively simple, and the cost of the sounding device is reduced. Secondly, the sounding device uses the input signal to cause the temperature of the sounding element to change, so that the surrounding gas and body medium rapidly expands and contracts, thereby generating sound waves without a diaphragm, and the sounding device composed of the sounding element can be non-magnetic. Work under conditions. Third, the carbon nanotube film has a small heat capacity and a large specific surface area, and the carbon nanotubes in the carbon nanotube film are parallel and evenly distributed with each other and the two ends of the portion of the carbon nanotube are respectively The two ends of the signal input device are electrically connected. After the input signal, according to the change of the signal strength (such as the current intensity), the sounding component composed of at least one layer of carbon nanotube film can fully utilize the characteristics of the carbon nanotube, such as excellent The axial conduction and thermal conductivity can uniformly heat the surrounding gas medium, rapidly rise and fall, produce periodic temperature changes, and perform rapid heat exchange with the surrounding gaseous medium to rapidly expand and contract the surrounding gaseous medium. It emits a sound that can be perceived by the human ear, and the frequency range of the emitted arpeggio is wide (mz~100 kHz), the sounding effect is better, and the response speed of the sounding device is faster and the sensitivity is higher. In addition, when the thickness of the sound emitting element is relatively small, for example, less than 10 micrometers, the sound emitting element has a high transparency, the sound generating device formed is a transparent sounding device, and can be directly mounted on display surfaces of various display devices and mobile phone display screens. Or the surface of the oil 昼 display = set, oil painting, etc. as a space-saving transparent sounding device. Fourth, 17 (S) 1353582 because a plurality of carbon nanotubes in the sound generating element form a network structure, and the network structure is composed of a plurality of holes through micro holes of less than 50 micrometers, the micro The presence of the holes increases the specific surface area of the sounding element, thereby facilitating the improvement of the sounding effect of the sounding 7G piece. Fifthly, since the carbon tube has good mechanical strength and toughness, the sounding element composed of at least two layers of nano carbon official films arranged in different directions by the carbon nanotubes has good mechanical strength and toughness, and is durable. The invention is better in that it is advantageous for preparing a sounding device of various shapes and sizes composed of sounding elements, and is thus conveniently applied to various fields. Sixth, when the supporting structure is a plane, the sounding element is directly disposed and attached to the surface of the supporting structure, so the sounding element can bear a high-intensity signal input, thereby having a high sounding intensity. When the support structure is a v-shaped, u-shaped structure or a cavity having a narrow opening, the sound-emitting element portion is disposed on the surface of the support structure to form a sound-sounding space, and the support structure can reflect The sound waves emitted by the sounding elements enhance the sounding effect of the sounding device. s • In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the patent application of the present invention cannot be limited thereby. 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. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic structural view of a speaker in the prior art. Fig. 2 is a schematic view showing the structure of a sound generating device of a first embodiment of the present technical solution. 18 1353582 FIG. 3 is a view showing a scanning electron micrograph of a film in a sounding device according to a first embodiment of the present technical solution. FIG. 4 is a structural diagram of a second embodiment of the present invention. FIG. 5 is a third embodiment of the present technical solution. Embodiment Structure Sounding Device Sounding Description [Main Component Symbol Description] Speaker Voice coil Magnet diaphragm Sounding device Signal wheeling device Sounding element supporting structure_First electrode Second electrode wire Third electrode Fourth electrode 100 102 104 106 10 , 20, 30 12, 22, 32 14, 24, 34 16, 26, 36 142, 242, 342 144, 244, 344 149, 249, 349 246 248 19