201224340 六、發明說明： 【發明所屬之技術領域】 本發明係有關一種LED燈管，特別是一種LED燈管結構及其 電路。 【先前技術】 日光燈是人們常用的照明燈具，近年來LED燈管因其環保、節 能、壽命長、效率高等優勢，逐漸取代傳統螢光燈’成為主流的照 明燈管。 >目前市面上的LED燈光，因其結構特性，且考慮到lED發熱 量相對較高的特點’通常的裝配方案’是將LED晶片安裝於電路板 上，再將電路板設置於管體内，由管體兩端的標準插接端，可插裝 於燈管插座以進行照明工作，LED發光時，產生的熱量通過電路板 傳遞到管體上’再由管體散發出去，其中管體兼具了正面透明導光、 内部固定電路板以及散熱等功能。而根據上述的要求，LED燈管的 管體結構’大致可分為兩種：一種為塑膠管件，管件正面為透光面， i 内部卡裝電路板，LED發光時，光線通過透光面照射出去，熱量則 通過電路板傳遞給管件’由管件散出；另一種則是塑膠管體背部固 定有鋁型材的結構’電路板安裝在鋁型材上，LED發出的光線通過 塑膠管正面透出，而熱量則可傳遞到鋁型材上，由鋁型材散出，以 通過鋁型材，達到更為良好的散熱效果。 LED燈管兩端設有的插接端，可將燈管固定於標準燈座，並由 燈座來獲取電源，因此使用狀態下，LED燈管為是橫裝固定於兩燈 201224340 座之間，唯管體兩端受到燈座固定支撐，使得管體中部則受自重影 響，具有一向下的應力；此狀態下，對於上述結構方案中的第一種 LED燈管，在其工作過程中，塑膠的管體受熱會逐漸軟化結合重 力作用，管體中部會受影響而產生細微的形變，因而燈管在長期使 用後，中間-段會明顯向下彎曲，影響燈管的外形美觀，使用亦不 再安全；而對於上述結構方案中的第二種LED燈管，由於管體背部 所結合的銘型材的作用，除具備較好的散熱效果外，在工作受熱狀 馨態、下，有背部㈣材的支撑，管體也不易受熱變形，能夠保持較為 長期的外形美觀’安裝結構也更為牢固，‘然而此類咖燈管因為使 用較多紹，會大大增加製造成本，導致產品價格昂貴，在市場上缺 乏競爭力，並且，通過紹型材來固定電路板，會使電路板位於管體 内的位置更為靠近管的正面，因而會減小燈管的照射角度，光照效 果下降。 如上所述’ LED燈管是由管體兩端的插接端安裝於燈座，以進 #行固定及取電工作的，插接端所具有的金屬接線端子，必須與燈座 所具有的介面相配合，才能正常取電，這就需要插接端必須裝配準 確，並具備足夠的強度，保證與管體的牢固固定，在一定扭力或外 力下不會產生轉動或位移’目前的基本方案，都是採用枯膠將插接 端枯接在管體端部，這種方式的缺點是，在枯緊固定後，就不可拆 卸，否則會造成連接關係的破壞，並且，在㈣燈管工作過程中產 生的熱量，會使枯膠軟化，枯力下降，則可能使插接端脫落。 料，LED燈管所應用在現場照明中，—般有市電經直流轉換 201224340 以對LED進行供電’市電在某些情況下出現頻率不穩定的情況，將 會影響通過LED晶片的電流值，如果經lEd晶片的電流過大，則會 對LED晶片造成永久性光衰，造成lEd燈管發光亮度的永久性降 低，滿足不了需要的光照強度要求。 【發明内容】 針對上述問題’本發明提供了 一種效果更為出色的LED光管， 具備牢固的裝配結構，不易受熱變形，且能夠形成如傳統螢光管一 樣的達到管體整體發光，以獲得更為出色的光照效果。 ·' ·本發明為為解決其技術問題所採用的技術方案是： 一種LED燈管，包括 管體； 安裝於官體内的電路板，該電路板上設置有發光二極體模組； 安裝於於管體兩端的電性插接組件； 其中： 所述管體包括外管體及内弧形條，其中外管體為具有中空腔室201224340 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to an LED lamp tube, and more particularly to an LED lamp tube structure and a circuit therefor. [Prior Art] Fluorescent lamps are commonly used lighting fixtures. In recent years, LED lamps have gradually replaced traditional fluorescent lamps as mainstream lighting lamps due to their environmental protection, energy saving, long life and high efficiency. >The current LED lighting on the market, due to its structural characteristics, and taking into account the relatively high heat output of lED 'normal assembly scheme' is to install the LED chip on the circuit board, and then set the circuit board inside the tube The standard plug-in end at both ends of the pipe body can be inserted into the lamp socket for lighting work. When the LED is illuminated, the generated heat is transmitted to the pipe body through the circuit board, and then discharged by the pipe body, wherein the pipe body It features front transparent light guide, internal fixed circuit board and heat dissipation. According to the above requirements, the tube structure of the LED tube can be roughly divided into two types: one is a plastic tube, the front side of the tube is a light-transmissive surface, and the inside is a card-mounted circuit board. When the LED emits light, the light is irradiated through the transparent surface. Going out, the heat is transmitted to the pipe fittings through the circuit board 'dissipated by the pipe fittings; the other is the structure in which the aluminum pipe is fixed on the back of the plastic pipe body'. The circuit board is mounted on the aluminum profile, and the light emitted by the LED is transmitted through the front surface of the plastic pipe. The heat can be transferred to the aluminum profile, which is dissipated by the aluminum profile to achieve a better heat dissipation effect through the aluminum profile. The plug ends at both ends of the LED tube can fix the tube to the standard lamp holder and obtain power from the lamp holder. Therefore, in the state of use, the LED tube is horizontally fixed between the two lamps 201224340. Only the two ends of the pipe body are fixedly supported by the lamp holder, so that the middle portion of the pipe body is affected by the self-weight and has a downward stress; in this state, for the first type of LED lamp tube in the above structural scheme, during its operation, The plastic tube will gradually soften and combine with gravity due to heat, and the middle part of the tube will be affected to produce subtle deformation. Therefore, after long-term use, the middle part will bend downward obviously, which will affect the appearance of the tube. It is no longer safe; for the second type of LED tube in the above structural scheme, due to the effect of the inscription profile combined with the back of the tube body, in addition to having a better heat dissipation effect, there is a back in the work of being heated and fragrant. (4) Support of the material, the pipe body is not easily deformed by heat, and can maintain a relatively long-term appearance. The installation structure is also firmer. However, such a coffee lamp tube will greatly increase the manufacturing cost because it is used more. As a result, the product is expensive and uncompetitive in the market, and fixing the circuit board by the profile material causes the circuit board to be located closer to the front side of the tube in the tube body, thereby reducing the illumination angle of the tube. The lighting effect is reduced. As mentioned above, the 'LED tube is mounted on the lamp holder by the plug ends at both ends of the tube body to fix and take power. The metal terminal block of the plug end must have the interface with the lamp holder. In order to get power normally, it is necessary that the plug end must be assembled accurately and have sufficient strength to ensure a firm fixation with the pipe body, and no rotation or displacement under a certain torque or external force' current basic scheme. Both of them use dead glue to connect the plug end to the end of the pipe body. The disadvantage of this method is that it cannot be disassembled after being tightened, otherwise it will cause damage to the connection relationship, and, in (4) the working process of the lamp tube The heat generated in the product will soften the dead gel and reduce the dry force, which may cause the plug end to fall off. Material, LED tube is used in the field lighting, there is a general power supply through DC conversion 201224340 to supply power to the LED 'the market power in some cases, the frequency is unstable, will affect the current value through the LED chip, if If the current through the lEd chip is too large, it will cause permanent light decay to the LED chip, resulting in a permanent decrease in the brightness of the lEd lamp, which does not meet the required illumination intensity requirements. SUMMARY OF THE INVENTION In view of the above problems, the present invention provides an LED light tube which is more excellent in effect, has a firm assembly structure, is not easily deformed by heat, and can form an overall light emission of a tube body like a conventional fluorescent tube to obtain Better lighting effects. The technical solution adopted by the present invention to solve the technical problem thereof is: an LED lamp tube including a pipe body; a circuit board installed in the official body, the circuit board is provided with a light emitting diode module; An electrical plug assembly at both ends of the tube body; wherein: the tube body comprises an outer tube body and an inner curved strip, wherein the outer tube body has a hollow chamber
c I 的一體成型管’而内弧形條背面則與外管體内壁貼合，其正面沿長 度方甸設有至少一組由兩脛肋組成的支撐定位肋； 所述電路板呈長條形，其正面上固定設置至少一組發光二極體 模組，電路板兩側分別通過支撐定位肋的兩脛肋夾持，以固定於内 弧形條上’ 所述電性插接組具有兩個可插接在傳統日光燈插座的凸插接 端，其中兩個凸插接端呈短路狀態連接。 201224340 上述内弧形條設有兩組位置對稱的支撐定位肋，每組支撐疋位 肋夾持固定一塊所述的電路板，使兩塊電路板呈/\塑分佈 上述的兩組支撐定位肋之間留有空隙，該空隙内夾設固定有肋 條。 上述的肋條兩端設有鎖孔，所述電性插接組通過螺栓與其對應 側的鎖孔鎖緊固定。 上述的外管體内壁的沿長度方向設有一體成型，並用以支樓疋 Φ 位所述内弧形條的加強筋。 上述的外管體上具有一體成型的波浪條紋。 上述的發光二極體模組包括若干串聯的發光二極體單元；所述 電路板上設有一組發光二極體模組或兩組以上相並聯的發光二極體 模組.。 上述的電路板上設有連接發光二極體模組的惠斯登電橋整流 器’及連接惠斯登電橋整流器並與發光二極體模組串聯以限流的恒 φ 流源。 上述的恒流源包括一恒流執行單元及一恒流驅動單元。 上述恒流執行單元包括一 N溝道MOS管，該MOS管柵極與通 過電壓回饋電阻與惠斯登電橋整流器連接，其漏極與發光二極體模 組連接，其源極與恒流驅動單元連接；所述恒流驅動單元包括一電 流回饋電阻及一 NPN三極管，該三極管積極連接M0S管的源極， 並通過電流回饋電阻接地，其集電極連接M〇s管的柵極。 本發明的有益效果是：本發明所提供的一種LED燈管，管體為 201224340 -體成型式，且與管體内設置的支料位肋可用於固定電路板，^ 夠在採用歸材料以賴低成本的同時，使管體具備足夠的強度， 結構更為牢固可靠，並在保證燈管卫作發熱狀態下不易產生變形,· 並且’通過支料位麟電路油定於f體㈣側，結合本發明所 採用的-體成型式㈣，能夠令燈管具備更A的絲角度，工作時 如同傳統螢光管-般，為整體360。發光，得到更好的光照效果；而 且’本發明採用鎖孔固定管體兩端電性插接組的結構，使得電性插 鲁接組具備足夠應付裝配及使用扭力的強度，保證其不會因受外力而 轉動或位移’結構壽命得到加強；此外，結合本發明所提供的發光 二極體模組，在保證照明效果的同時，防止LED產生永久光衰，能 夠具備理想的散熱效果及更為優越的使用壽命。 【實施方式】 如圖1及圖2所示的一種LED燈管，包括管體丨、安裝於管體 1内的電路板2,設置於電路板2上的發光二極體模組3，管體i兩 端設有電性插接組4，其中電路板2連接該電性插接組4，該電性插 接組採用標準的雙pin結構，具有兩個凸插接端41，其中兩個凸插 接端41呈短路狀態連接，成為可插於傳統日光燈插座上，以連接外 界電源而取電的標準插接端。 管體1主要由外管體Π及内弧形條12組成，其中外管體丨丨為 具有中空腔室的一體成型管外管體u正面的内側壁上具有一體成型 的波浪條紋，使得其具有透鏡功能，以擴張發光角度；而内弧形條 201224340 !2背面則與外管體内壁貼合，其正面沿長度方向設有至少—體成型 有-組由兩脛聽成的支狀位肋13 ;該電路板2呈長條形其正 面上固找置至少-組發光二極體模心，電路以兩側分別通過支 撲定位肋13的兩腔肋夾持，以固定於内弧形條η上，整體結構， 形成内弧形條12通過支狀位肋13固定住電路板2，外管體丄則安 裝固定内弧形條12 ;並讀選的，外管體11内壁沿長度方向設有-體成型的加強筋14’該加強筋14可用於夾持住内弧形條12，以對 内弧形條12起到支樓定位作用，此結構狀態下，管體i内部結構的 裝配均不需要額外更多的連接件，結構較為簡單及合理，同時加強 筋14起到進—步加強管體1的整體強度的作用。 在本發明的一種實施例中，該外管體1科採用PC材料管，装特 點是对磨、耐高溫，且堅勒，透光率好，作為外管體i使用，能夠 保證對管内元器件的保護，且光照效果得到保證，而内弧形條η可 採用娜塑鋼材料，其硬度足夠強，且相對便宜，作為起到固定電 路板2，並切㈣丨纽雜的㈣職u，_健使用 度要求。 如圖中所示’支収位肋U的位置靠近與外管體u" 此設置於電路板2正_發光二極體触3所對應的㉞ 比傳統咖燈管大，因而發光二極體模組3卫作時發出的= 從管體U多的部位透出，且由於反射作用，僅在管體”部^ 裝電路板2的位置略暗’因此使得燈管照射角度得到了增大 到如同傳統螢光管的360。發光效果。 可達 201224340 如圖2所示的一種實施例中，内弧形條12設有兩組位置對稱的 支撐定位肋13，每組支撐定位肋13夾持固定一塊所述的電路板2， 使兩塊電路板2之間具有一定夾角，互呈，，型分佈，在工作時， 兩塊電路板2正面的發光二極體模組3同時發光，光照角度互有交 叉’使得光照強度更好’並能夠彼此直接照射到對方覆蓋不到的範 圍，令光線的覆蓋角度也得到了進一步增大。且本實施例中，兩組 支撲定位肋13之間設有一體成型於内弧形條12正面的肋條5，該肋 _ 條5能夠用於支撐管體丨防止變形，並且在燈管工作而發熱時起到 一定的傳遞熱及散熱作用。 如圖3所示，本發明的第二種實施例中，基本結構如同第一轉 實施例所示，具有兩組互相對稱的支撐定位肋13以夾持兩塊電路_ 2 ’且本實施例中’肋條5的端部可設置鎖孔51，其作用是與電性 接組4配合，用於鎖緊固定電性插接組4,其具體結構如圖4所示， 電性插接組4在裴配於管體1的端部後，由一螺栓42正向穿入，且 • 與該側的鎖孔51鎖緊’如此可將電性插接組4固定於管體1端部， 而不需要採用粘膠粘接的方式，可以實現重複拆裝而不會破壞L^D 燈管的結構，且使固定好的電性插接組4受到螺栓42的鎖緊，在安 裝LED燈管時，燈管兩頭的扭力不足以再造成電性插接組4的轉動 或移動，保證了 LED燈管的整體結構強度及使用性能。此外如圖中 所示，該肋條5可以設有超過半圓而一體成塑的端部，該超過半圓 的結構圍成所對應的鎖孔51，製造十分方便。 本法的LED燈管，由發光二極體模組3提供光源’其由若干串 201224340 聯的發光二極體單元31組成；根據不同的發光效果要求’可以在電 路板2上設有一組發光二極體模組3或兩組以上相並聯的發光二極 體模組3，與電路板所提供的電源轉換元器件結合，工作時達到需要 的光照強度。 如圖5所示，本發明較為優選的方案，採用DC電源供電，同時 為保證供電穩定性，電路板2上設有連接發光二極體模組3的惠斯 登電橋整流器6，及連接惠斯登電橋整流器6並與發光二極體模組3 串聯以限流的恒流源7，其中，所述恒流源7包括一恒流執行單元 71及一恒流驅動單元72,恒流驅動單元72為與惠斯登電橋整流器6 連接以獲取電流信號的單元，恒流執行單元71則為控制輸出以保證 發光二極體模組3供電穩定的控制單元。 如圖6所示為本發明電路結構較為優選的實施方式，所述恒流 執行單元71包括一 N溝道MOS管Q1，該m〇S管Q1的柵極G通 過電壓回饋電阻R2與惠斯登f橋錄器6連接，其· _發光二 極體模組2連接’其源極S與恒流驅動單元72連接；所述恒流驅動 單元72包括-電流回饋電阻R1及―卿三極管吸，該三極管如 的基極b連接MOS管Q1的源極s，並通過電流回饋電阻Rl接地， 其集電極c連接MOS管Q1的柵極G，其發射極e則接地。腦管 以阻抗較低’因此回饋速度快，效率高，具備較好的使用效果。 以定性分析該恒流源的工作原理，當經惠斯登電橋整流器6輸 入發光二極體模組2 -路的電流！因為某個原因增加，ri電阻上的 電流增加，三極管Q1基極電壓升高，在Q1電流放大作訂，流過 201224340 R2的電流增大，使得Q2源極電壓在R2、R1的作訂變小，流過 Q2源極的電流小了，在Q2 &放大作用下，通過Q2漏極的電流減小， 也就是減小了 1的值；同理，在1變小的情況下，職況剛好相反。 當然上述只是最基本的優選電路結構，其中恒流源7相對於發 光二極體模組2位於低電位，而當恒流源7相對於發光二極體模組2 位於高電位的情況’如圖7所示，採用Q1為p溝道謂管，φ 則為三極管的電路接法，其中，φ的栅極g通過電壓回饋電The integrally formed tube of c I and the back surface of the inner curved strip are attached to the inner wall of the outer tube, and the front side of the square is provided with at least one set of supporting positioning ribs composed of two ribs along the length of the square; the circuit board is strip a plurality of light-emitting diode modules are fixedly disposed on the front surface thereof, and two sides of the circuit board are respectively clamped by two ribs supporting the positioning ribs to be fixed on the inner curved strips. Two male plugs can be plugged into the conventional fluorescent socket, and the two male connectors are connected in a short circuit state. 201224340 The above-mentioned inner curved strip is provided with two sets of symmetric positioning support ribs, and each set of supporting ribs clamps and fixes one of the circuit boards, so that the two circuit boards are/plastically distributed with the above two sets of support positioning ribs. There is a gap between them, and ribs are fixed in the gap. The above ribs are provided with locking holes at both ends, and the electrical plugging group is locked and fixed by bolts and the corresponding side locking holes. The inner wall of the outer tube is integrally formed along the length direction, and is used for supporting the ribs of the inner curved strip. The outer tube body described above has integrally formed wavy stripes. The LED module includes a plurality of LED units connected in series; the circuit board is provided with a plurality of LED modules or two or more LED modules in parallel. The above-mentioned circuit board is provided with a Wheatstone bridge rectifier connected to the light-emitting diode module and a constant φ current source connected to the Wheatstone bridge rectifier and connected in series with the light-emitting diode module to limit current. The constant current source includes a constant current execution unit and a constant current driving unit. The constant current execution unit includes an N-channel MOS transistor, the gate of the MOS transistor is connected to the Wheatstone bridge rectifier through a voltage feedback resistor, and the drain is connected to the LED module, and the source and the constant current thereof are connected. The driving unit is connected; the constant current driving unit comprises a current feedback resistor and an NPN transistor. The transistor is actively connected to the source of the MOS tube and grounded through a current feedback resistor, and the collector is connected to the gate of the M〇s tube. The invention has the beneficial effects that the LED lamp tube provided by the invention has the tube body of 201224340-body molding type, and the ribs provided with the support material in the tube body can be used for fixing the circuit board, and At the same time of low cost, the pipe body has sufficient strength, the structure is more firm and reliable, and it is not easy to be deformed under the condition that the lamp tube is heated. · And 'the side of the body is set on the body of the f body (four) In combination with the body-forming type (4) used in the present invention, the lamp tube can have a wire angle of A, and the work is like a conventional fluorescent tube, and is 360 as a whole. Luminous, get better light effect; and 'The invention adopts the structure of the electrical plugging group at both ends of the tube body by using the keyhole, so that the electric plugging unit has enough strength to cope with the assembly and use of the torsion force, ensuring that it will not The structure life is enhanced by the rotation or displacement of the external force; in addition, the light-emitting diode module provided by the invention can prevent the LED from generating permanent light decay while ensuring the illumination effect, and can have an ideal heat dissipation effect and more. For a superior service life. [Embodiment] An LED lamp tube as shown in FIG. 1 and FIG. 2 includes a pipe body, a circuit board 2 mounted in the pipe body 1, and a light-emitting diode module 3 disposed on the circuit board 2. An electrical plug group 4 is disposed at both ends of the body i, wherein the circuit board 2 is connected to the electrical plug group 4, and the electrical plug group adopts a standard double pin structure, and has two male plug terminals 41, two of which The male plug-in terminals 41 are connected in a short-circuit state, and become a standard plug-in end that can be inserted into a conventional fluorescent lamp socket to connect to an external power source to take power. The tubular body 1 is mainly composed of an outer tubular body and an inner curved strip 12, wherein the outer tubular body is an integrally formed tubular outer tube having a hollow chamber, and the inner side wall of the front surface has an integrally formed wavy stripe, so that It has a lens function to expand the angle of illumination; while the inner curved strip 201224340!2 has a back surface that fits the inner wall of the outer tube, and the front surface of the inner curved strip is provided with at least a body-shaped group-shaped group of two cymbals. Rib 13; the circuit board 2 has an elongated shape, and at least a group of light emitting diode cores are fixedly disposed on the front surface thereof, and the circuit is clamped on both sides by two cavity ribs of the staking positioning ribs 13 to be fixed to the inner arc. On the strip η, the overall structure, the inner curved strip 12 is formed to fix the circuit board 2 through the branch ribs 13, and the outer tube body is fixed to the inner curved strip 12; and the inner wall of the outer tube 11 is read and read. The lengthwise direction is provided with a body-formed reinforcing rib 14'. The reinforcing rib 14 can be used for holding the inner curved strip 12 to position the inner curved strip 12 as a branch. In this state, the inside of the tube body i The assembly of the structure does not require additional connectors, the structure is simple and reasonable, and at the same time strengthen The ribs 14 serve to further enhance the overall strength of the tubular body 1. In an embodiment of the present invention, the outer tube body 1 is made of a PC material tube, and the assembly features are grinding, high temperature resistance, good tensile strength, good light transmittance, and is used as the outer tube body i to ensure the inner tube element. The protection of the device, and the illumination effect is guaranteed, and the inner curved strip η can be made of Na plastic steel material, the hardness is strong enough, and relatively cheap, as a fixed circuit board 2, and cut (four) 丨 杂 四 (four) job u, _Health usage requirements. As shown in the figure, the position of the branch rib U is close to the outer tube u" This is set on the circuit board 2, the illuminating diode contact 3 corresponds to 34, which is larger than the conventional coffee tube, and thus the light-emitting diode When the module 3 is manufactured, it is emitted from the part of the pipe body U, and due to the reflection, the position of the circuit board 2 is only slightly darker in the pipe body portion. Therefore, the illumination angle of the lamp tube is increased. To a conventional fluorescent tube 360. Luminous effect. Up to 201224340 In an embodiment as shown in Fig. 2, the inner curved strip 12 is provided with two sets of positionally symmetric supporting positioning ribs 13, each set of supporting positioning ribs 13 Holding one of the circuit boards 2, the two circuit boards 2 have a certain angle between each other, and are arranged in a mutual shape. During operation, the LED modules 3 on the front side of the two circuit boards 2 are simultaneously illuminated. The illumination angles intersect each other 'so that the illumination intensity is better' and can directly illuminate each other to a range that is not covered by the other party, so that the coverage angle of the light is further increased. In this embodiment, the two sets of spur positioning ribs 13 There are ribs 5 integrally formed on the front surface of the inner curved strip 12 The rib strip 5 can be used to support the tubular body to prevent deformation, and to provide a certain heat transfer and heat dissipation when the lamp works to generate heat. As shown in FIG. 3, in the second embodiment of the present invention, The basic structure is as shown in the first embodiment, and has two sets of mutually symmetrical support positioning ribs 13 for clamping two circuits _ 2 ' and in the embodiment, the end of the rib 5 can be provided with a lock hole 51, the function of which is Cooperating with the electrical connector 4 for locking and fixing the electrical plug group 4, the specific structure is as shown in FIG. 4, and the electrical plugging group 4 is provided with a bolt after being fitted to the end of the pipe body 1. 42 is forwardly inserted, and • is locked with the keyhole 51 on the side. Thus, the electrical plug group 4 can be fixed to the end of the pipe body 1 without the use of adhesive bonding, which can be repeatedly removed. The structure of the L^D lamp tube is not damaged, and the fixed electrical plug group 4 is locked by the bolt 42. When the LED lamp tube is installed, the torque of the two ends of the lamp tube is insufficient to cause electrical insertion. The rotation or movement of the group 4 ensures the overall structural strength and performance of the LED tube. Further, as shown in the figure, the rib 5 can be The end portion is formed by more than a semicircle and is integrally molded. The over-circular structure encloses the corresponding locking hole 51, which is very convenient to manufacture. The LED tube of the present method is provided with a light source by the LED module 3 A plurality of LEDs of the 201224340 LED unit 31 are formed; according to different lighting requirements, a set of LED modules 3 or two or more LED modules in parallel may be provided on the circuit board 2 In combination with the power conversion components provided by the circuit board, the required light intensity is achieved during operation. As shown in FIG. 5, the preferred solution of the present invention is powered by a DC power supply, and at the same time, to ensure power supply stability, on the circuit board 2 a Wheatstone bridge rectifier 6 connected to the LED module 3, and a constant current source 7 connected to the Wheatstone bridge rectifier 6 and connected in series with the LED module 3 for current limiting, wherein The constant current source 7 includes a constant current executing unit 71 and a constant current driving unit 72. The constant current driving unit 72 is a unit connected to the Wheatstone bridge rectifier 6 to obtain a current signal, and the constant current executing unit 71 is controlled. Output to ensure luminous dipole The body module 3 is powered by a stable control unit. FIG. 6 shows a preferred embodiment of the circuit structure of the present invention. The constant current execution unit 71 includes an N-channel MOS transistor Q1, and the gate G of the m〇S transistor Q1 passes through a voltage feedback resistor R2 and Wheatstone. The bridge assembly 6 is connected, and the LED module 2 is connected with its source S connected to the constant current driving unit 72. The constant current driving unit 72 includes a current feedback resistor R1 and a "single transistor". The base b of the triode is connected to the source s of the MOS transistor Q1, and is grounded through the current feedback resistor R1. The collector c is connected to the gate G of the MOS transistor Q1, and the emitter e is grounded. The brain tube has a low impedance, so the feedback speed is fast, the efficiency is high, and the effect is good. To qualitatively analyze the working principle of the constant current source, when the Wheatstone bridge rectifier 6 is input into the current of the LED module 2 - way! For some reason, the current on the ri resistor increases, the base voltage of the transistor Q1 rises, and the current is amplified by Q1, and the current flowing through 201224340 R2 increases, so that the Q2 source voltage is set at R2 and R1. Small, the current flowing through the source of Q2 is small. Under Q2 & amplification, the current through the drain of Q2 is reduced, that is, the value of 1 is reduced. Similarly, in the case of 1 becoming smaller, The situation is just the opposite. Of course, the above is only the most basic preferred circuit structure, wherein the constant current source 7 is at a low potential relative to the LED module 2, and when the constant current source 7 is at a high potential relative to the LED module 2, As shown in Fig. 7, Q1 is a p-channel tube, and φ is a circuit connection of a triode, wherein the gate g of φ is fed back by voltage.
阻R2與惠斯登電橋整流器6連接，該極〇連接到Q2的基極b， 其源極s與發光二極體模組2連接，Q2的集電極e則連接qi的拇 極G。該電路的工作原理，和圖7的工作原理是—樣的。 如圖8所示，本發明的電路結構中，還可以由三極管φ替代 MOS管Q1的電流負反饋電路：或如圖9所示，由開光管w替代 二極管Q2的電流負反饋電路；或是如圖1()所示，恒流驅動單元72 當然圖9〜圖11 採用放大器LM358D的電流回饋電路，來實現恒流 均只給出了相對於發光二極體模組2處於低電位的情況，而相對於 發光二極體餘2處於高電位的情況，則為和圖8 —樣的優選實施 方式的變形，在此不再贅述。 」述、是本發明參照較佳實施例而進行說明示範 ，惟應 ^的是在Γ離本發明之精神及料内，對於本發明所屬技術領 並不者㈣’仍得有許多變化及修^目此，本發明 並不限制於所揭露的實施 為准，即不偏離H 要求簡範_文字記載 '月申明專利範_為之均等變化與修飾，應仍 201224340 屬本發明之涵蓋範圍。 【圖式簡單說明】 下面結合附圖和具體實施方式對本發明進行進一步說明： 圖1為本發明的整體結構示意圖； 圖2為本發明第一種實施例管體的内部結構示意圖； 圖3為本發明第二種實施例管體的内部結構示意圖； 圖4為本發明第二種實施例的拆分結構示意圖； 圖5為本發明的電路原理方框圖； 圖6為本發明較佳實施例的電路原理圖； ..圖7為本發明較佳實施例電路原理圖的變形； 圖8為本發明電路第二種實施例的原理圖； 圖9為本發明電路第三種實施例的原理圖； 圖10為本發明電路第四種實施例的原理圖。 【主要元件符號說明】 1 燈管管體 2 電路板 3 發光二極體模組 4 電性插接組 5 肋條 6 惠斯登電橋整流器 7 恆流源 11 外管體 12 弧形條 13 支撐定位肋 14 加強筋 31 二極體單元 41 凸插接端 42 螺栓 51 鎖孔 71 恒流執行單元 72 恆流驅動單元 12The resistor R2 is connected to the Wheatstone bridge rectifier 6, which is connected to the base b of Q2, the source s of which is connected to the LED module 2, and the collector e of Q2 is connected to the thumb G of qi. The working principle of this circuit is the same as that of Figure 7. As shown in FIG. 8, in the circuit structure of the present invention, the current negative feedback circuit of the MOS transistor Q1 can be replaced by a triode φ: or, as shown in FIG. 9, the current negative feedback circuit of the diode Q2 is replaced by the light-emitting tube w; As shown in FIG. 1(), the constant current driving unit 72 of course, the current feedback circuit of the amplifier LM358D is used in FIG. 9 to FIG. 11 to realize that the constant current is only given a low potential with respect to the LED module 2. With respect to the case where the remaining 2 of the light-emitting diode is at a high potential, it is a modification of the preferred embodiment as shown in FIG. 8, and details are not described herein again. The present invention has been described with reference to the preferred embodiments, but it should be construed that the invention is not limited to the spirit of the invention. Therefore, the present invention is not limited to the disclosed embodiments, that is, it does not deviate from the H requirement. The equivalent of the monthly declaration of the patent specification is that the 201224340 is still covered by the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be further described with reference to the accompanying drawings and specific embodiments. Fig. 1 is a schematic view of the overall structure of the present invention; Fig. 2 is a schematic view showing the internal structure of a pipe body according to a first embodiment of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 4 is a schematic diagram of a split structure of a second embodiment of the present invention; FIG. 5 is a circuit block diagram of the present invention; FIG. Figure 7 is a schematic diagram of a circuit schematic diagram of a preferred embodiment of the present invention; Figure 8 is a schematic diagram of a second embodiment of the circuit of the present invention; Figure 9 is a schematic diagram of a third embodiment of the circuit of the present invention Figure 10 is a schematic diagram of a fourth embodiment of the circuit of the present invention. [Main component symbol description] 1 Lamp tube body 2 Circuit board 3 Light-emitting diode module 4 Electrical plug-in group 5 Ribs 6 Wheatstone bridge rectifier 7 Constant current source 11 Outer tube body 12 Curved strip 13 Support Positioning rib 14 Reinforcing rib 31 Dipole unit 41 Male plug end 42 Bolt 51 Lock hole 71 Constant current execution unit 72 Constant current drive unit 12