M281194 八、新型說明： 【新型所屬之技術領域】 本創作為冷陰極螢光燈管之彎管結構的技術領域，尤其指一 種能使彎曲角度及形狀更為接近實際設定狀態者。 【先前技術】 背光模組主要目的是提供液晶螢幕所須之光源，背光模組的 | 基本構造由三部份所組成，即光源、導光板與光學膜等。光源的 種類又可分為冷陰極螢光燈管（CCFL，Cold Cathode Fluorescent Lamp)及發光二極體(LED)兩種。如第一圖所示，為一種利用冷陰 極螢光燈管作為光源，所形成的彎管1與導光板2的結構示意 圖，由於一般冷陰極燈螢光管的彎曲方式，是先將玻璃製的管體 加熱後，待其軟化後再彎曲成所須之角度（例如圖中的9〇度夹 角），因此彎曲處的内側壁1丄必為圓弧狀，而非一尖銳的9〇度 • 夾角形狀，因此與其配合的導歧2的頂角2 1則必須進行去角 _ 的加工，形成一斜面狀，使得整面導光板2可運用的面積僅虛線 • A所標示的内側區域，並非實際的外框的面積大小，如此一來導 光板可利用面積縮小，又須多一道去角的加王。另外此種彎管工 '的外繼1 2也為因彎曲的過財距離加大使得管壁厚度變薄， -n曲的半徑r最大，其管壁厚度愈薄，如此-來不管是搬運或 燈党使財，很容胃於較薄的f魏破裂，縮織正常的使用壽 命。 ⑧ M281194 如第-A圖及第二B圖所示，為另—種形狀的彎管，其仍是 -種冷陰極螢光燈管，亦作為導光板的光源使用，但其通常是數 根-起使用，提供更高亮度的光源，其缺點亦與上述實施例相同， . 料處_趣形成—圓弧狀，若作為導光板之光源時，如第二 ' A圖中之彎管！a僅兩側B段區域可作為光源使用，而第二^圖 所示之實施例則為改良型，其ffl Bfj為兩側c段的區域可作 為光源使用’如此-來可配合使用的導光板面積相對縮小，而製 p 作上也較為不便。 【新型内容】 本創作之主要目的是提供一種夾角的角度及形狀更能配合預 設狀態的彎管結構，運用此方式製成的冷陰極螢光燈管，能使得 配a使用的‘光板免除去角的加工，讓導光板的使用空間面積加 大’同時嫌去角的加1，生產、組裝或使科更為方便。 本創作之次要目的提供一種使用壽命較長的彎管結構，運用 此方式製成之冷陰㈣光燈管其彎曲處的外侧厚錄傳統方式更 厚，使用時不容易破裂，能延長產品的使用壽命。另外若所製具 • 有兩道彎曲處的冷陰極燈管時，即形成Π字型時，會於管内形成 __ 一冷點位置，調整燈管内部水銀蒸氣壓，具有增加燈管壽命及使 光源亮度更佳穩定的優點。 ⑧ 6 M281194 為達上之目的，本創作是在一冷陰極螢光燈管彎管之彎曲處 的内側形成向管内凹陷的内凹部，如此一來能使彎曲處的外側管 土弓曲半杈縮小，而使能破璃管壁厚度不致變薄，另外又能使内 側壁圓面的存在，讓產品在使用上更為方便。 為使番查委員清楚了解本創作之詳細流程及技術内容，本創 作人將配合以下之圖式及詳細之解說，以求審查委員清楚了解本 創作之精神所在： 【實施方式】 如第三、四所示，為本創作彎管之彎曲處的平面圖及剖面示 意圖’本創作所述之彎管是運用於冷陰極螢光燈管處，其主要功 月b是作為液晶螢幕之背光模組的光源。本創作主要是在該彎管* 之彎曲處41的内側管壁形成一向管内方向内凹的内凹部42， 忒内凹部42的形成方式是在玻璃管加熱彎曲過程中，配合模具 同步弯曲成型，故該_部4 2内壁可為-_面或可能為不規 則的·曲面。如此-來，該彎曲處4 的_壁並無傳統的圓 弧面存在，因此所配合的導光板的頂角可作成直角，也不須進行 去角的加工。對導光板而言，其可利用的面積更大，省去一道加 工作業，組裝及使用上更為方便。 本創作利用内凹部4 2形成於彎曲管41的内側，一方面沪 M281194 將原本彎糾_鶴制玻璃顧得以獲得向岐伸的空間， 另-方面使得f曲時外侧壁的弧面半徑縮小，因此外側管壁的厚 度比以傳統方絲得厚，因此燈管使料不容胃破裂，能延長此 種冷陰極螢光燈管的使用壽命。 如第五圖所示，為本創作另—種實施例圖，此_冷陰極勞 光燈官A主要具有兩處⑽度夹角的彎曲處，即使得整體形 狀似Π字型’此類通常為數根為—組，作為液晶電視之背光模 組的光源。而其可作為光源的區域為兩側的D區域，長度較習用 的方式更長，可供更大面積的導光板使用。另外由於兩彎曲處内 部所形成的内凹部4 2 ’可使此種冷陰極螢光燈管頂部内側4 3 内。ί5形成-冷闕區域’可碰燈管内部水銀蒸氣壓，具有增加 燈管壽命及使光源亮度更佳穩定的優點，為制方式所無法達到 的功效。 以上所述者，僅為本創作之較佳實施例而已，並非用來限定 本創作貫〜例之範ϋ。即凡依本創作申請專利範圍所作的均等變 化及修飾，皆為本創作之專利範圍所涵蓋。 【圖式簡單說明】 第-圖為習用冷陰極螢光燈管之彎管與導板板的局部示意圖； 第一Α圖為習用另一種冷陰極螢光燈管彎管的平面圖； 8M281194 8. Description of the new type: [Technical field to which the new type belongs] This creation is the technical field of the curved tube structure of the cold cathode fluorescent lamp, especially a person who can make the bending angle and shape closer to the actual setting state. [Previous technology] The main purpose of the backlight module is to provide the light source required for the LCD screen. The basic structure of the backlight module consists of three parts, namely the light source, light guide plate and optical film. There are two types of light sources: cold cathode fluorescent lamps (CCFL, Cold Cathode Fluorescent Lamp) and light emitting diodes (LED). As shown in the first figure, it is a schematic diagram of the structure of the curved tube 1 and the light guide plate 2 using a cold cathode fluorescent tube as a light source. Due to the bending method of the common cold cathode fluorescent tube, the glass is first made of glass. After heating the tube body, bend it to the required angle after softening (for example, the angle of 90 degrees in the figure), so the inner wall 1 丄 of the bend must be arc-shaped instead of a sharp 90 °. Degree • The angle shape, so the apex angle 2 1 of the guide 2 that is matched with it must be chamfered to form an inclined surface, so that the entire area of the light guide plate 2 can only be used as a dotted line. • The inner area indicated by A It is not the actual size of the outer frame. In this way, the area of the light guide plate can be reduced, and it is necessary to add a king to the corner. In addition, this pipe bender's external relay 1 2 is also due to the increase in the bending distance, which makes the pipe wall thickness thinner. -N The radius r is the largest, and the thickness of the pipe wall is thinner. Or the Lantern Party makes money, and it is very tolerant of the thinner Wei Wei rupture, shrinking the normal service life. 281 M281194 As shown in Figures -A and 2B, it is another type of curved tube, which is still a kind of cold cathode fluorescent tube, and also used as the light source of the light guide plate, but it is usually several -It can be used to provide a light source with higher brightness, and its disadvantages are the same as those of the above embodiment.. Material_ interesting formation-circular arc shape, if used as the light source of the light guide plate, such as the curved pipe in the second 'A picture! a Only the area on both sides of the B segment can be used as a light source, and the embodiment shown in the second figure is an improved type, where ffl Bfj is the area on both sides of the c segment can be used as a light source. The area of the light plate is relatively reduced, and the production of p is relatively inconvenient. [New content] The main purpose of this creation is to provide a curved tube structure with an included angle and shape that better fits the preset state. The cold cathode fluorescent tube made by this method can eliminate the use of a 'light plate' The processing of the chamfering makes the area of the light guide plate larger. At the same time, the chamfering is increased by 1, which makes the production, assembly or the department more convenient. The secondary purpose of this creation is to provide a bent tube structure with a long service life. The cold thick fluorescent lamp tube made using this method has a thicker outer thickness than the traditional method. It is not easy to break during use and can prolong the product. Life. In addition, if there are two cold cathode lamp tubes with bends, that is, when a Π shape is formed, a cold spot position will be formed in the tube to adjust the mercury vapor pressure inside the lamp tube, which will increase the lamp life and The advantage of making the light source brighter and more stable. ⑧ 6 M281194 In order to achieve the above purpose, this creation is to form a recessed portion recessed into the tube on the inside of the bend of a cold cathode fluorescent tube bend, so that the outer tube of the bend can be arched halfway through the soil. It can be reduced, so that the wall thickness of the broken glass tube will not be reduced, and the existence of the round surface of the inner wall will make the product more convenient to use. In order for the members of Fancha to clearly understand the detailed process and technical content of this creation, the creator will cooperate with the following diagrams and detailed explanations, so that the review members can clearly understand the spirit of this creation: [Implementation Modes] Figure 4 shows the plan and cross-section schematic diagram of the bend of the curved tube of this creative work. The curved tube described in this creative work is applied to the cold cathode fluorescent lamp tube. Its main function is to be used as the backlight module of the LCD screen. light source. This creation is mainly formed on the inner tube wall of the bend 41 of the elbow * with an inward recessed portion 42 that is recessed in the direction of the tube. The indented portion 42 is formed in the process of heating and bending the glass tube in synchronization with the mold. Therefore, the inner wall of the part 4 2 may be a-face or may be an irregular · curved surface. In this way, there is no traditional arc surface on the wall of the bend 4; therefore, the vertex angle of the matched light guide plate can be made a right angle, and no chamfering is required. For the light guide plate, the available area is larger, eliminating the need for additional work, and it is more convenient to assemble and use. In this creation, the inner concave portion 42 is formed on the inner side of the curved tube 41. On the one hand, Shanghai M281194 will bend the original curved _ crane-made glass Gu to obtain the space extended to Qi, and on the other hand, the radius of the arc surface of the outer wall is reduced when f is curved Therefore, the thickness of the outer tube wall is thicker than that of the traditional square wire, so the lamp tube does not allow the stomach to rupture, which can prolong the service life of such cold cathode fluorescent lamp tubes. As shown in the fifth figure, this is another embodiment of the creative. This cold cathode labor lamp officer A mainly has two bends with an angle of ⑽, which makes the overall shape resemble a Π-shape. There are several groups as a light source of the backlight module of the LCD TV. The area that can be used as a light source is the D area on both sides, which is longer than the conventional way and can be used for a larger area of the light guide plate. In addition, the inner recessed portion 4 2 ′ formed at the inner portion of the two bends can make the inside of the top 4 3 of the cold cathode fluorescent tube. ί5 Formation-cold upset area ’can touch the mercury vapor pressure inside the tube, which has the advantages of increasing the life of the tube and making the brightness of the light source more stable, which is an effect that cannot be achieved by the manufacturing method. The above are only the preferred embodiments of this creation, and are not intended to limit the scope of this creation. That is, all equal changes and modifications made in accordance with the scope of the patent application for this creation are covered by the scope of patent for this creation. [Brief description of the drawings] The first diagram is a partial schematic diagram of the bend tube and the guide plate of the conventional cold cathode fluorescent lamp tube; the first A is a plan view of the bend pipe of another cold cathode fluorescent lamp tube; 8