201006300 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種線熱源，尤其涉及一種基於奈米碳管 的線熱源。 【先前技術】 熱源於人們的生產、生活、科研中起著重要的作用。 線熱源係常用的熱源之一，被廣泛應用於電加熱器、紅外 治療儀、電暖器等領域。 請參見圖1 ’先前技術提供一種線熱源10，其包括一 中空圓柱狀支架102 ; —加熱層1〇4設置於該支架1〇2表 面’ 一絕緣保護層106設置於該加熱層1〇4表面；兩個電 極110分別設置於支架102兩端，且與加熱層1〇4電連接； 兩個夾緊件108分別將兩個電極11〇與加熱層1〇4卡固於 支架102兩端。其中，電極11〇通常採用一金屬片、金屬 絲、金屬膜、銦錫氧化物（IT0)層、銻錫氧化物（AT〇) 層、導電銀膠層或導電聚合物層等。當通過兩個電極ιι〇 對該線熱源10施加一電壓時，所述電熱層1〇4產生焦耳 熱’並向周圍進行熱輻射。 然而，採用金屬片、金屬絲、金屬膜、銦錫氧化物（ΙΊΌ) 層、鍊錫氧化物（ΑΤ〇)層、導電銀膠層或導電聚合物層 作為線熱源的電極具有以下缺點：第一，該電極的 較大’故，對電能的損耗也較大。第三，該電極的柔動性 及機械強度差，長期折疊容易斷裂，使用壽命短，不易應 用於柔性線熱源。第三，該電極的密度較大，重量大，使 201006300 用不便。 * 、有鑒於此，提供一種電極的電阻率較小，柔韌性及機 ’械強度高’長期折疊不易斷裂，且密度小，重量輕的線熱 源實為必要。 【發明内容】 種線熱源包括一線狀基底，一加熱層設置於線狀基 _的表面以及兩個電極間隔設置於加熱層的表面，並分 別與該加熱層電連接，其中，所述電極中，至少一個電極 •包括-奈米碳管結構。 、相較於先前技術，所述的線熱源具有以下優點：其一， 不米碳管具有極好的導電性，故，該電極的電阻小，有利 於降低功耗，提高發熱效率。其二，奈米碳管的優異的力 學特性使得奈米碳管結構具有很好的柔勃性及機械強度， 故/木用奈米碳管結構作電極，可相應的提高線熱源，尤 其係柔性線熱源的耐用性，故，該線熱源使用壽命長；其 ❹三，奈米碳管密度小，故，該線熱源重量輕，使用方便。 【實施方式】 以下將結合附圖詳細說明本技術方案提供的線熱源。 、請參閱圖2至圖4，本技術方案實施例提供一種線熱 源20，該線熱源20包括一線狀基底2〇2 ; 一反射層21〇 設置於該線狀基底202的表面；一加熱層2〇4設置於所述 反射層210表面；兩個電極206間隔設置於該加熱層2〇4 的表面，且與該加熱層204電連接；以及一絕緣保護層2〇8 設置於該加熱層204的表面。所述線熱源2〇的長度不限， 201006300 .直徑為〇·1微求〜1.5厘米。本實施例的線熱源、2〇的直徑優 選為1.1毫米〜1.1厘米。 參 '所述線狀基底202用於支撐加熱層2〇4，其材料可為 硬性材料，如··陶冑、玻璃、樹脂、石英等，亦可選擇柔 性材料’如：塑膠或柔性纖維等，用以使該線熱源2〇使用 時根據需要f折成任意形狀。所述線狀基底2〇2的長度、 直徑以及形狀不限，可依據實際需要進行選擇。本實ς例 優選的線狀基底2〇2為一陶究桿，其直徑為i毫米〜卫厘米。 所述反射層210的材料為一白色絕緣材料，如： 氧化物、金屬鹽或陶究等。本實施例中，反射層21〇的材 料優選三氧化二鋁’其厚度為⑽微米〜〇5毫米。該反射 層210通過蒸發或濺射的方法沈積於該線狀基底加表 面。所述反射層210用來反射加熱層綱所發㈣量，使 其有效的散發到外界空間去，故，該反㈣2 擇結構。 』選 所述加熱層204的材料不限，其可為金屬絲層、電献 η 維層或奈米碳管層。當採用奈求碳管層作為加； 營。_太乎# “ 廣匕括複數個均句分佈的奈米碳 & μ 層中的奈米碳管有序排列或無序 ===度為0.01微米〜2毫米。該奈米碳管層中 的ΐ未石厌官包括單壁奈米碳管、雙壁奈米碳管及多壁奈米 石反官中的y種或多種。所述單壁奈米碳管的直徑為Μ奈 米1〇二米/雙壁奈米碳管的直徑為奈米〜15奈米，多 壁奈米％i &的直㈣15奈米〜5()奈米。該奈米碳管的長 201006300 度為200〜900微米。 ’ 該奈米碳管層可包裹或纏繞於所述反射層21〇的表 ‘面，或通過黏結劑固定於所述反射層210的表面。可以理 解，當沒有反射層210時，該奈米碳管層可直接設置於線 裝基底202的表面。奈米碳管具有良好的導電性能以及敎 穩定性’作為-理想的黑體結構，且具有比較高的熱輕射 效率。 所述電極206可設置於加熱層204的同 ❹ ▼-， 表面上也可 設置於加熱層204的不同表面上，且與加熱層綱電連接。 所述電極206可通過奈米碳管層的黏性或導電黏結劑（圖 未不）設置於該加熱層204的表面上。導電黏結劑於實現電 極206與奈米碳管層電接觸的同時，還可將電極施更好 地固定於奈米碳管層的表面上。通過該兩個電極施可對 !^層204進行施加電壓。其中，兩個電極高之間相隔 ,又以使W奈米碳管層的加熱層珈通電發熱時接入 •二==免短路現象產生。優選地，將電極施環繞 叹置於加熱層204的表面。 所=2極施中至少一個電極2〇6包括一奈米碳管 ^纏^ 結構設置於線裝基底2〇2的兩端，並包 定於所心3加熱層2G4的表面’或通過導電黏結劑固 疋於所迷加熱層204的表面， 奈米碳管結構中的奈米碳管包括單二電連接。該 碳管及多壁奈米石山壁奈未碳管、雙壁奈米 性夺f石山总〃厌吕#一種或多種。本實施例優選金屬 卡及官。所述單壁奈米碳管的直徑為0.5奈米，奈 201006300 ^雙壁奈米碳管的直徑為^奈米〜15奈米，多壁 碳官的直徑為1.5奈米〜50奈米。該奈米碳 ：： 於200微米。 又局大 至奈米碳管結構包括一有序奈米碳管薄膜或 至J兩層重疊且交叉設置的有序奈米碳管薄膜，或 奈米碳管長線。 當所述奈米碳管結構包括至少一有序奈米碳管薄膜 時。請參閱圖5,該有序奈米碳管薄膜可通過直接拉伸— 奈米碳管陣列獲得。該有序奈米碳管薄膜包括複數個沿拉 伸方向定向排列的奈米碳管。所述奈米碳管均勾分佈，且 平行於奈米碳管薄膜表面。具體地，請參閱圖6，所述有 序奈米碳管薄膜包括複數個首尾相連且長度相等的奈米碳 管束162。所述奈米碳管束162的兩端通過凡德瓦爾力相 互連接。每個奈米碳管束162包括複數個長度相等且平行 排列的奈米碳管163。所述相鄰的奈米碳管163之間通過 ❿凡德瓦爾力緊密結合。該奈米碳管的長度為2〇〇〜9〇〇微 米。故，該有序奈米碳管薄膜具有一定的柔韌性，可彎曲 折疊成任意形狀而不破裂，且採用該有序奈米碳管薄膜的 電極260具有較長的使用壽命。 所述有序奈米碳管薄膜係由奈米碳管陣列經進一步處 理得到的，故其長度不限，寬度及奈米碳管陣列所生長的 基底的尺寸有關’可根據實際需求制得。本實施例中，採 用氣相沈積法於4英寸的基底生長超順排奈米碳管陣列。 所述有序奈米碳管薄膜的寬度可為〇〇1厘米〜1()厘米，厚 201006300 度為0.01微米〜 為0.1微米〜微米 微米。有序奈米碳管薄膜 的厚度優選 φ ❿ 另所述有序奈米碳管薄膜還 的長奈米碳管。該長夺枯複數個+订排列 徑為奈米〜5〇 m 厘米〜5厘米，直 管，故，且電二：長奈米碳管為單根奈米碳 於反射層：採用該有序奈米碳管薄臈設置 、，· 、 5 σ…、層204的表面做電極206，可更右兮 的傳導電流，減少電能的損耗。 、…當所述奈米碳管結構包括至少兩層重疊設置时 米石厌管薄膜時，相鄰的有痒太丰# 不 礙六登^士人 反官薄膜之間通過凡德瓦 ♦爾力緊雄、、…進一步，該奈米碳管結構令的有序奈 管薄，的層數不限’且相鄰兩層有序奈米碳管薄膜之間具 有一交叉角度α，恤柳度，具體可依據實際需求製^ 由於該有序奈米碳管薄財的奈米碳管沿同—方 列’故’於奈米碳管排列方向具有優異的導電性。本實施 例通過改變相鄰兩層有序奈米碳管薄臈之間的交又角产 α，可使得該奈米碳管結構於各個方向都具有優異的導ς 性。本實施例中’優選交叉角度α=90度。 當所述奈米碳管結構包括至少一奈米碳管長線時，該 奈米碳管長線纏繞於反射層210或加熱層2〇4的表面 述奈米礙管長線可通過直接拉伸一奈米碳管陣列獲得或拉 伸一奈米碳管陣列後經過扭轉紡紗獲得。所述奈米碳管長 線的直徑為1奈米〜100微米，其長度不限，可根據實際需 求制得。請參見®1 7及圖8 ’所述奈米碳f長線包括複數 11 201006300 個首尾相連的奈米碳管束平行地組成的束狀結構或由複數 個首尾相連的奈米碳管束相互扭轉組成的絞線結構。該相 鄰的奈米碳管束之間通過凡德瓦爾力緊密結合，該奈米碳 官束包括複數個首尾相連且定向排列的奈米碳管。該奈米 碳管的長度為200〜900微米。故，奈米碳管長線具有—定 的柔韌性。 所述奈米碳管結構還可包括複數個奈米碳管長線，且 複數個奈米碳管長線交又且重疊設置於加熱層的表 面。該奈米碳管結構的長度、寬度以及厚度不限，可根據 實際需要製備。由於奈米碳管長線具有的柔祕，故， 4奈米碳官結構可彎曲折疊成任意形狀而不破裂。 由於該奈米碳管長線中的奈米碳管沿著奈米碳管長線 的長度方向排列，&，該奈米碳管長線沿著長度方向具有 ❿ ，小的電阻。故，將該奈米碳管長線纏繞於加熱層204的 表面：電極206’可有效的傳導電流，節約電能。 當只有一個電極206包括一奈米碳管結構時，另— 採用巫屬片金屬絲、金屬膜或導 例優選地，兩個雷托p 寻本貫知 太米碳-… 採用奈米碳管結構製作，且該 :膜疊且交叉設置的50層有序奈米碳管 =膜’相鄰兩層有序奈米碳㈣狀时 反二 度。該奈米碳管έ士槿φ古产夫， 月又為90 米，寬产為序奈米破管薄膜的長度為1厘 太米铲：:士-里;厚度為30微米。本實施例將兩個上述 ΐ碳二:冓分別間隔包裹於加熱層204的表面。由於夺 '、、D構良好的導電性，使得奈米碳管結構與加熱層 12 201006300 204之間形成良好的電連接。 本實施例中，加熱層204採用奈米碳管層。兩個電極 206都採用採用重疊且交叉設置# 1〇層有序奈米碳管薄 膜’相鄰兩層有序奈来碳管薄臈之間交又的角度為9〇度。 該結構可減小加熱層施與電極施之間的歐姆接觸電 阻，提高對電能的利用率。 所述絕緣保護層208的材料為一絕緣材料，如：橡膠、201006300 IX. Description of the Invention: [Technical Field] The present invention relates to a line heat source, and more particularly to a line heat source based on a carbon nanotube. [Prior Art] Heat plays an important role in people's production, life, and scientific research. One of the commonly used heat sources for line heat sources is widely used in electric heaters, infrared therapeutic devices, and electric heaters. Referring to FIG. 1 'the prior art provides a line heat source 10 including a hollow cylindrical bracket 102; - a heating layer 1 〇 4 is disposed on the surface of the bracket 1 ' 2 ' an insulating protective layer 106 is disposed on the heating layer 1 〇 4 The two electrodes 110 are respectively disposed at two ends of the bracket 102 and electrically connected to the heating layer 1〇4; the two clamping members 108 respectively fix the two electrodes 11〇 and the heating layer 1〇4 to the two ends of the bracket 102. . The electrode 11 is usually made of a metal piece, a metal wire, a metal film, an indium tin oxide (IT0) layer, a tantalum tin oxide (AT〇) layer, a conductive silver paste layer or a conductive polymer layer. When a voltage is applied to the line heat source 10 through the two electrodes, the electrothermal layer 1〇4 generates Joule heat' and thermally radiates to the surroundings. However, an electrode using a metal piece, a wire, a metal film, an indium tin oxide layer, a chain tin oxide layer, a conductive silver paste layer or a conductive polymer layer as a line heat source has the following disadvantages: First, the larger the electrode, the loss of electrical energy is also greater. Third, the electrode has poor flexibility and mechanical strength, long-term folding is easy to break, and has a short service life, and is not easily applied to a flexible line heat source. Third, the density of the electrode is large and the weight is large, making the 201006300 inconvenient. * In view of the above, it is necessary to provide a wire heat source having a small electrical resistivity, high flexibility, and high mechanical strength, long-term folding, and low density and light weight. SUMMARY OF THE INVENTION A seed line heat source includes a linear substrate, a heating layer disposed on a surface of the linear substrate and two electrodes spaced apart from each other on a surface of the heating layer, and electrically connected to the heating layer, wherein the electrode is in the electrode , at least one electrode • including - carbon nanotube structure. Compared with the prior art, the line heat source has the following advantages: First, the carbon nanotube has excellent conductivity, so that the resistance of the electrode is small, which is advantageous for reducing power consumption and improving heat generation efficiency. Secondly, the excellent mechanical properties of the carbon nanotubes make the carbon nanotube structure have good flexibility and mechanical strength, so the wood carbon nanotube structure can be used as an electrode to increase the line heat source, especially The durability of the flexible wire heat source, therefore, the wire heat source has a long service life; the third, the carbon nanotube density is small, so the wire heat source is light in weight and convenient to use. [Embodiment] Hereinafter, a line heat source provided by the present technical solution will be described in detail with reference to the accompanying drawings. Referring to FIG. 2 to FIG. 4, an embodiment of the present technical solution provides a line heat source 20 including a linear substrate 2〇2; a reflective layer 21〇 disposed on a surface of the linear substrate 202; a heating layer 2〇4 is disposed on the surface of the reflective layer 210; two electrodes 206 are disposed on the surface of the heating layer 2〇4 and electrically connected to the heating layer 204; and an insulating protective layer 2〇8 is disposed on the heating layer The surface of 204. The length of the line heat source 2〇 is not limited, 201006300. The diameter is 〇·1 micro-finished to 1.5 cm. The diameter of the line heat source of the present embodiment, 2 turns, is preferably 1.1 mm to 1.1 cm. The linear substrate 202 is used to support the heating layer 2〇4, and the material thereof may be a hard material such as ceramics, glass, resin, quartz, etc., or a flexible material such as plastic or flexible fiber. In order to make the line heat source 2 折 fold into an arbitrary shape as needed. The length, diameter and shape of the linear substrate 2〇2 are not limited, and may be selected according to actual needs. The preferred linear substrate 2〇2 is a ceramic rod having a diameter of i mm to wei cm. The material of the reflective layer 210 is a white insulating material such as an oxide, a metal salt or a ceramic. In the present embodiment, the material of the reflective layer 21 is preferably alumina (thickness) having a thickness of (10) μm to 5 mm. The reflective layer 210 is deposited on the linear substrate plus surface by evaporation or sputtering. The reflective layer 210 is used to reflect the amount of the heating layer (4), so that it is effectively radiated to the external space, so the inverse (four) 2 structure. The material of the heating layer 204 is not limited, and may be a wire layer, an electric η layer or a carbon nanotube layer. When using the carbon tube layer as a plus; camp. _太乎# “The carbon nanotubes in the nanocarbon & μ layer of the average number distribution are ordered or disordered === degrees are 0.01 μm to 2 mm. The carbon nanotube layer The ΐ石石厌官 includes y or more of single-walled carbon nanotubes, double-walled carbon nanotubes, and multi-walled nano-steel. The diameter of the single-walled carbon nanotubes is The diameter of 1 〇 2 m / double-walled carbon nanotubes is nanometer ~ 15 nm, multi-walled nano %i & straight (four) 15 nm ~ 5 () nm. The length of the carbon nanotubes 201006300 degrees It is 200 to 900 μm. 'The carbon nanotube layer can be wrapped or wound around the surface of the reflective layer 21〇, or fixed to the surface of the reflective layer 210 by an adhesive. It can be understood that when there is no reflective layer At 210 o'clock, the carbon nanotube layer can be directly disposed on the surface of the wire substrate 202. The carbon nanotube has good electrical conductivity and stability, as an ideal black body structure, and has relatively high heat and light efficiency. The electrode 206 can be disposed on the same layer of the heating layer 204, and the surface can also be disposed on different surfaces of the heating layer 204, and the heating layer The electrode 206 may be disposed on the surface of the heating layer 204 through a viscous or conductive adhesive of a carbon nanotube layer (not shown). The conductive adhesive contacts the electrode 206 and the carbon nanotube layer. At the same time, the electrode can be better fixed on the surface of the carbon nanotube layer. The voltage can be applied to the layer 204 through the two electrodes, wherein the two electrodes are separated by height, and When the heating layer of the W nanocarbon tube layer is energized and heated, it is connected to the second == short circuit-free phenomenon. Preferably, the electrode is applied to the surface of the heating layer 204. The at least one electrode of the 2-pole application 2〇6 includes a carbon nanotubes/wrapped structure disposed at both ends of the wire substrate 2〇2, and is disposed on the surface of the core 3 heating layer 2G4 or fixed to the heating layer 204 by a conductive adhesive. The surface of the carbon nanotube structure includes a single and a second electrical connection. The carbon tube and the multi-walled nano-stone wall are not carbon nanotubes, and the double-walled nano-strength is a type or a plurality of This embodiment is preferably a metal card and a guest. The single-walled carbon nanotube has a diameter of 0.5 nm. 201006300 ^The diameter of the double-walled carbon nanotubes is ^ nanometer ~ 15 nm, the diameter of the multi-walled carbon official is 1.5 nm ~ 50 nm. The nano carbon:: at 200 microns. The carbon tube structure comprises an ordered carbon nanotube film or an ordered carbon nanotube film which is overlapped and arranged in two layers, or a carbon nanotube long line. When the carbon nanotube structure comprises at least one order For the carbon nanotube film, please refer to Figure 5, the ordered carbon nanotube film can be obtained by direct stretching - carbon nanotube array. The ordered carbon nanotube film comprises a plurality of orientations oriented in the stretching direction. The carbon nanotubes are distributed and parallel to the surface of the carbon nanotube film. Specifically, referring to Fig. 6, the ordered carbon nanotube film comprises a plurality of carbon nanotube bundles 162 connected end to end and of equal length. Both ends of the carbon nanotube bundle 162 are connected to each other by a van der Waals force. Each of the carbon nanotube bundles 162 includes a plurality of carbon nanotubes 163 of equal length and arranged in parallel. The adjacent carbon nanotubes 163 are tightly coupled by a van der Waals force. The length of the carbon nanotubes is 2 〇〇 to 9 〇〇 micrometers. Therefore, the ordered carbon nanotube film has a certain flexibility, can be bent and folded into an arbitrary shape without cracking, and the electrode 260 using the ordered carbon nanotube film has a long service life. The ordered carbon nanotube film is further processed by the carbon nanotube array, so that the length is not limited, and the width and the size of the substrate on which the carbon nanotube array is grown can be made according to actual needs. In this example, a super-sequential carbon nanotube array was grown on a 4-inch substrate by vapor deposition. The ordered carbon nanotube film may have a width of 〇〇1 cm to 1 (cm) and a thickness of 201006300 of 0.01 μm to 0.1 μm to μm. The thickness of the ordered carbon nanotube film is preferably φ 长 the long carbon nanotube of the ordered carbon nanotube film. The long wins a plurality of + ordering diameters are nanometer ~ 5 〇 m cm ~ 5 cm, straight tube, so, and electricity two: long carbon nanotubes are single nano carbon in the reflective layer: using the order The surface of the carbon nanotubes of the carbon nanotubes, , · , 5 σ..., the surface of the layer 204 is used as the electrode 206, which can conduct current more to the right and reduce the loss of electric energy. When the carbon nanotube structure includes at least two layers of overlapped meteorites, the adjacent itch is too thick. #不碍六登^士人反官膜Between the van der Waals Further, the carbon nanotube structure makes the ordered naphthalene tube thin, the number of layers is not limited, and the adjacent two layers of ordered carbon nanotube film have a cross angle α, The degree can be determined according to the actual demand. The carbon nanotubes of the ordered carbon nanotubes have excellent electrical conductivity along the same direction as the carbon nanotubes. In this embodiment, by changing the cross-angle production α between the adjacent two layers of ordered carbon nanotubes, the carbon nanotube structure can be excellent in all directions. In the present embodiment, 'the preferred crossing angle α = 90 degrees. When the carbon nanotube structure comprises at least one nanometer carbon tube long line, the long carbon wire of the nano carbon tube is wound around the surface of the reflective layer 210 or the heating layer 2〇4, and the long line of the tube can be directly stretched by one The carbon nanotube array is obtained by twisting and spinning after obtaining or stretching an array of carbon nanotubes. The diameter of the carbon nanotube long line is from 1 nm to 100 μm, and the length thereof is not limited and can be obtained according to actual needs. Please refer to ®1 7 and Figure 8' for the nanocarbon f long line including the complex 11 201006300 end-to-end bundles of carbon nanotubes in parallel or a plurality of end-to-end carbon nanotube bundles twisted to each other. Stranded wire structure. The adjacent carbon nanotube bundles are tightly coupled by van der Waals force, and the nano carbon official bundle includes a plurality of carbon nanotubes connected end to end and oriented. The carbon nanotubes have a length of 200 to 900 microns. Therefore, the long line of carbon nanotubes has a certain flexibility. The carbon nanotube structure may further comprise a plurality of carbon nanotube long lines, and the plurality of carbon nanotubes are long-lined and overlapped on the surface of the heating layer. The length, width and thickness of the carbon nanotube structure are not limited and can be prepared according to actual needs. Due to the softness of the long carbon nanotube line, the 4 nm carbon structure can be bent and folded into any shape without breaking. Since the carbon nanotubes in the long line of the carbon nanotubes are arranged along the length of the long line of the carbon nanotubes, &, the long carbon nanotubes have a small electrical resistance along the length direction. Therefore, the long carbon nanotube wire is wound around the surface of the heating layer 204: the electrode 206' can effectively conduct current and save electrical energy. When only one electrode 206 comprises a carbon nanotube structure, another - using a witch wire, a metal film or a lead, preferably two Leito p seeks to know the carbon -... using a carbon nanotube The structure is fabricated, and the film layer is stacked and cross-positioned with 50 layers of ordered carbon nanotubes = the film is adjacent to the two layers of ordered nanocarbon (four) when the second degree is reversed. The carbon nanotubes of the έ 古 古 古 , , 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月 月In this embodiment, two of the above-mentioned bismuth carbon dioxide: 冓 are separately wrapped on the surface of the heating layer 204. Due to the good electrical conductivity of the ', D structure, a good electrical connection is formed between the carbon nanotube structure and the heating layer 12 201006300 204. In this embodiment, the heating layer 204 is a carbon nanotube layer. Both electrodes 206 are overlapped and cross-set with a #1 layer of ordered carbon nanotube film. The angle between the two adjacent layers of ordered carbon nanotubes is 9 degrees. The structure can reduce the ohmic contact resistance between the heating layer and the electrode application, and improve the utilization of electric energy. The material of the insulating protective layer 208 is an insulating material, such as rubber,
樹脂等。所述絕緣保護層雇厚度不限，可根據實際情況 選，。本實施财，該絕緣保護層細的材料採用橡膠， 其厚度為0·5〜2毫米。該絕緣保護層施可通過塗敷或包 裹的方法形成於加熱層2G4的表面。所述絕緣保護層期 用來防止3亥線熱源20使用時與外界形成電接觸，同時還可 防止加熱層2〇4中的奈米碳管層吸附外界雜質。該絕緣保 護層208為一可選擇結構。 、該線熱源20使用時’可將其設置於所要加熱的物體表 ❹面或將其與被加熱的物體間隔設置，利用其熱輕射即可進 行加熱。另’還可將複數個該線熱源2〇排列成各種預定的 圖形使用。該線熱源2G可廣泛應用於電加熱器、紅外 儀、電暖器等領域。 ’、 所述的線熱源20具有以下優點：其―，奈米碳管 =低的電阻率’故’該電極細的電阻小，有利於節約電 犯其一，奈米碳管的優異的力學特性使得奈米碳管結構 ^报好的柔祕及機械強度，故，採用奈米碳管結構作 。極206 ’可相應的提高線熱源2〇，尤其係柔性線熱源 13 201006300 .的耐用性，故，該線熱源20使用壽命長；其三，奈米碳管 •密度小，故，該線熱源20重量輕，使用方便。其四，加熱 層204採用奈米礙管層，該奈米破管層具有較高的電熱轉 換效率。其五，加熱層2〇4採用奈米碳管層，電極2〇6採 用奈米碳管結構’可減小加熱層2〇4與電極2〇6之間的歐 姆接觸電阻，提高對電能的利用率。 另，本實施例中，由於奈米碳管具有奈米級的直徑， 使得製備的奈来碳管結構可具有較小的厚度，故，採用小 直徑的線狀基底可製備微型線熱源。奈米碳管具有強的抗 腐蝕性，使其可於酸性環境中工作。而且，奈米碳管具有 極強的穩定性，即使於3〇〇〇〇c以上高溫的真空環境下工作 而不會为解，使該線熱源2〇適合於真空高溫下工作。另， 奈米碳管比同體積的鋼強度高1〇〇倍，重量卻只有其1/6， 故，採用奈米碳管的線熱源2 0具有更高的強度及更輕的重 量。 〇 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。舉凡熟悉本案技藝 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為先前技術的線熱源的結構示意圖。 圖2為本技術方案實施例的線熱源的結構示意圖。 圖3為圖2的線熱源沿線瓜- JJJ的剖面示意圖。 201006300 . 圖4為圖3的線熱源沿線IV -IV的剖面示意圖。 . 圖5為本技術方案實施例的奈米碳管薄膜的掃描電鏡 照片。 圖6為本技術方案實施例的奈米碳管薄膜的部分放大 結構示意圖。 圖7為本技術方案實施例的束狀結構的奈米碳管長線 的掃描電鏡照片。 圖8為本技術方案實施例的絞線結構的奈米碳管長線 春的掃描電鏡照片。 、 【主要元件符號說明】 線熱源 10, 20 支架 102 加熱層 104, 204 保護層 106 夾緊件 108 電極 線狀基底 110, 206 202 絕緣保護層 208 反射層 210 奈米碳管束 162 奈米碳管 163 15Resin, etc. The thickness of the insulating protective layer is not limited, and may be selected according to actual conditions. In this implementation, the insulating protective layer is made of a rubber material having a thickness of 0.5 to 2 mm. The insulating protective layer can be formed on the surface of the heating layer 2G4 by coating or encapsulation. The insulating protective layer is used to prevent electrical contact with the outside world when the 3 ray heat source 20 is used, and at the same time prevent the carbon nanotube layer in the heating layer 2 〇 4 from adsorbing external impurities. The insulating protective layer 208 is an optional structure. When the line heat source 20 is in use, it can be placed on the surface of the object to be heated or placed at an interval from the object to be heated, and can be heated by light heat. Alternatively, a plurality of the line heat sources 2 can be arranged in various predetermined patterns for use. The line heat source 2G can be widely used in the fields of electric heaters, infrared meters, electric heaters and the like. 'The linear heat source 20 has the following advantages: - "Nanocarbon tube = low resistivity 'so that the electrode has a small electrical resistance, which is conducive to saving electricity, and the excellent mechanics of the carbon nanotube The characteristics make the carbon nanotube structure report good flexibility and mechanical strength, so the carbon nanotube structure is used. The pole 206' can increase the line heat source 2〇, especially the flexible line heat source 13 201006300. Therefore, the line heat source 20 has a long service life; third, the carbon nanotubes have a low density, so the line heat source 20 light weight, easy to use. Fourth, the heating layer 204 employs a nano-tube layer, which has a high electrothermal conversion efficiency. Fifth, the heating layer 2〇4 adopts a carbon nanotube layer, and the electrode 2〇6 adopts a carbon nanotube structure' to reduce the ohmic contact resistance between the heating layer 2〇4 and the electrode 2〇6, thereby improving the electric energy. Utilization rate. Further, in the present embodiment, since the carbon nanotubes have a diameter of a nanometer order, the prepared carbon nanotube structure can have a small thickness, and therefore, a microwire heat source can be prepared by using a small-diameter linear substrate. The carbon nanotubes are highly resistant to corrosion and allow them to work in an acidic environment. Moreover, the carbon nanotubes have extremely high stability, and even if they are operated under a vacuum environment of a temperature higher than 3 〇〇〇〇c, they are not solved, so that the line heat source 2 〇 is suitable for working at a vacuum high temperature. In addition, the carbon nanotubes are 1 times more powerful than the same volume of steel, and the weight is only 1/6. Therefore, the line heat source 20 using the carbon nanotubes has higher strength and lighter weight.综 In summary, the invention has indeed met the requirements of the invention patent and has filed a patent application in accordance with the 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 in this case. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the present invention are intended to be included in the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic structural view of a prior art line heat source. 2 is a schematic structural view of a line heat source according to an embodiment of the present technical solution. 3 is a schematic cross-sectional view of the line heat source of FIG. 2 along the line Guar-JJJ. 201006300. Figure 4 is a schematic cross-sectional view of the line heat source of Figure 3 taken along line IV-IV. Fig. 5 is a scanning electron micrograph of a carbon nanotube film according to an embodiment of the present technical solution. Fig. 6 is a partially enlarged schematic view showing the structure of a carbon nanotube film according to an embodiment of the present invention. Fig. 7 is a scanning electron micrograph of a long carbon nanotube tube of a bundle structure according to an embodiment of the present invention. Fig. 8 is a scanning electron micrograph of a long-line carbon nanotube of a stranded wire structure according to an embodiment of the present invention. [Main component symbol description] Line heat source 10, 20 Bracket 102 Heating layer 104, 204 Protective layer 106 Clamping member 108 Electrode linear substrate 110, 206 202 Insulating protective layer 208 Reflecting layer 210 Carbon nanotube bundle 162 Carbon nanotube 163 15